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-rw-r--r--js/src/builtin/Array.js50
-rw-r--r--js/src/builtin/Classes.js2
-rw-r--r--js/src/builtin/Intl.cpp102
-rw-r--r--js/src/builtin/IntlTimeZoneData.h2
-rw-r--r--js/src/builtin/Map.js27
-rw-r--r--js/src/builtin/ModuleObject.cpp2
-rw-r--r--js/src/builtin/Promise.cpp53
-rw-r--r--js/src/builtin/ReflectParse.cpp4
-rw-r--r--js/src/builtin/RegExp.cpp140
-rw-r--r--js/src/builtin/RegExp.js134
-rw-r--r--js/src/builtin/RegExpLocalReplaceOpt.h.js36
-rw-r--r--js/src/builtin/Set.js29
-rw-r--r--js/src/builtin/TypedArray.js79
-rw-r--r--js/src/builtin/TypedObject.cpp2
-rw-r--r--js/src/builtin/Utilities.js12
-rw-r--r--js/src/builtin/WeakMap.js27
-rw-r--r--js/src/builtin/WeakSet.js29
-rw-r--r--js/src/frontend/BytecodeCompiler.cpp152
-rw-r--r--js/src/frontend/BytecodeCompiler.h41
-rw-r--r--js/src/frontend/BytecodeEmitter.cpp2180
-rw-r--r--js/src/frontend/BytecodeEmitter.h54
-rw-r--r--js/src/frontend/FullParseHandler.h7
-rw-r--r--js/src/frontend/ParseNode-inl.h2
-rw-r--r--js/src/frontend/ParseNode.cpp18
-rw-r--r--js/src/frontend/ParseNode.h19
-rw-r--r--js/src/frontend/Parser.cpp100
-rw-r--r--js/src/frontend/Parser.h16
-rw-r--r--js/src/frontend/SharedContext.h8
-rw-r--r--js/src/frontend/SyntaxParseHandler.h3
-rw-r--r--js/src/frontend/TokenStream.cpp149
-rw-r--r--js/src/frontend/TokenStream.h1
-rw-r--r--js/src/gc/Allocator.cpp8
-rw-r--r--js/src/gdb/moz.build2
-rw-r--r--js/src/irregexp/RegExpCharacters-inl.h40
-rw-r--r--js/src/irregexp/RegExpCharacters.cpp135
-rw-r--r--js/src/irregexp/RegExpCharacters.h90
-rw-r--r--js/src/irregexp/RegExpEngine.cpp140
-rw-r--r--js/src/irregexp/RegExpEngine.h8
-rw-r--r--js/src/jit-test/tests/auto-regress/for-of-iterator-close-debugger.js15
-rw-r--r--js/src/jit-test/tests/basic/constructor-name.js2
-rw-r--r--js/src/jit-test/tests/basic/destructuring-default.js5
-rw-r--r--js/src/jit-test/tests/basic/destructuring-rest.js7
-rw-r--r--js/src/jit-test/tests/basic/functionnames.js32
-rw-r--r--js/src/jit-test/tests/basic/regexpLastIndexReset.js4
-rw-r--r--js/src/jit-test/tests/debug/Memory-drainAllocationsLog-16.js2
-rw-r--r--js/src/jit-test/tests/debug/Script-gc-02.js2
-rw-r--r--js/src/jit-test/tests/debug/Script-gc-03.js2
-rw-r--r--js/src/jit-test/tests/debug/Script-sourceStart-04.js4
-rw-r--r--js/src/jit-test/tests/for-of/bug-1331444.js7
-rw-r--r--js/src/jit-test/tests/for-of/bug-1341339.js9
-rw-r--r--js/src/jit-test/tests/gc/bug-1323868.js5
-rw-r--r--js/src/jit-test/tests/ion/bug1333946.js8
-rw-r--r--js/src/jit-test/tests/ion/bug1334314.js16
-rw-r--r--js/src/jit-test/tests/parser/bug-1357075.js10
-rw-r--r--js/src/jit-test/tests/proxy/testWrapWithProtoIter.js1
-rw-r--r--js/src/jit-test/tests/proxy/testWrapWithProtoTypedArray.js19
-rw-r--r--js/src/jit-test/tests/saved-stacks/function-display-name.js5
-rw-r--r--js/src/jit-test/tests/self-test/assertDeepEq.js3
-rw-r--r--js/src/jit/BaselineBailouts.cpp35
-rw-r--r--js/src/jit/BaselineCompiler.cpp95
-rw-r--r--js/src/jit/BaselineCompiler.h13
-rw-r--r--js/src/jit/CodeGenerator.cpp123
-rw-r--r--js/src/jit/CodeGenerator.h8
-rw-r--r--js/src/jit/IonAnalysis.cpp6
-rw-r--r--js/src/jit/IonBuilder.cpp81
-rw-r--r--js/src/jit/IonBuilder.h4
-rw-r--r--js/src/jit/JitFrames.cpp99
-rw-r--r--js/src/jit/Lowering.cpp25
-rw-r--r--js/src/jit/Lowering.h2
-rw-r--r--js/src/jit/MIR.h60
-rw-r--r--js/src/jit/MIRGraph.cpp13
-rw-r--r--js/src/jit/MIRGraph.h3
-rw-r--r--js/src/jit/MOpcodes.h2
-rw-r--r--js/src/jit/VMFunctions.cpp9
-rw-r--r--js/src/jit/VMFunctions.h4
-rw-r--r--js/src/jit/shared/LIR-shared.h40
-rw-r--r--js/src/jit/shared/LOpcodes-shared.h2
-rw-r--r--js/src/js.msg9
-rw-r--r--js/src/jsapi-tests/moz.build2
-rw-r--r--js/src/jsapi.cpp81
-rw-r--r--js/src/jsapi.h34
-rw-r--r--js/src/jsarray.cpp2
-rw-r--r--js/src/jsatom.cpp8
-rw-r--r--js/src/jscntxt.cpp2
-rwxr-xr-x[-rw-r--r--]js/src/jsdate.cpp5
-rw-r--r--js/src/jsexn.cpp226
-rw-r--r--js/src/jsexn.h9
-rw-r--r--js/src/jsfun.cpp428
-rw-r--r--js/src/jsfun.h66
-rw-r--r--js/src/jsfuninlines.h2
-rw-r--r--js/src/jsiter.cpp52
-rw-r--r--js/src/jsiter.h3
-rw-r--r--js/src/jsobj.cpp17
-rw-r--r--js/src/jsobj.h3
-rw-r--r--js/src/jsopcode.cpp60
-rw-r--r--js/src/jsopcode.h1
-rw-r--r--js/src/jsopcodeinlines.h3
-rw-r--r--js/src/jsscript.cpp41
-rw-r--r--js/src/jsscript.h49
-rw-r--r--js/src/jsstr.cpp2
-rw-r--r--js/src/jsutil.cpp2
-rwxr-xr-xjs/src/make-source-package.sh4
-rw-r--r--js/src/moz.build7
-rw-r--r--js/src/old-configure.in10
-rw-r--r--js/src/shell/js.cpp45
-rw-r--r--js/src/tests/Intl/Collator/construct-newtarget.js81
-rw-r--r--js/src/tests/Intl/DateTimeFormat/construct-newtarget.js81
-rw-r--r--js/src/tests/Intl/DateTimeFormat/timeZone_backward_links.js2
-rw-r--r--js/src/tests/Intl/DateTimeFormat/timeZone_backzone.js3
-rw-r--r--js/src/tests/Intl/DateTimeFormat/timeZone_backzone_links.js2
-rw-r--r--js/src/tests/Intl/DateTimeFormat/timeZone_notbackward_links.js2
-rw-r--r--js/src/tests/Intl/NumberFormat/construct-newtarget.js81
-rw-r--r--js/src/tests/ecma_2017/AsyncFunctions/construct-newtarget.js79
-rw-r--r--js/src/tests/ecma_2017/AsyncFunctions/subclass.js31
-rw-r--r--js/src/tests/ecma_2017/lastIndex-exec.js80
-rw-r--r--js/src/tests/ecma_2017/lastIndex-match-or-replace.js122
-rw-r--r--js/src/tests/ecma_2017/lastIndex-search.js118
-rw-r--r--js/src/tests/ecma_3/String/15.5.4.11.js2
-rw-r--r--js/src/tests/ecma_5/Function/arguments-caller-callee.js12
-rw-r--r--js/src/tests/ecma_5/Function/arguments-property-attributes.js8
-rw-r--r--js/src/tests/ecma_5/RegExp/exec.js2
-rw-r--r--js/src/tests/ecma_5/RegExp/instance-property-storage-introspection.js5
-rw-r--r--js/src/tests/ecma_5/extensions/error-tostring-function.js4
-rw-r--r--js/src/tests/ecma_6/Array/from-iterator-close.js183
-rw-r--r--js/src/tests/ecma_6/Class/className.js20
-rw-r--r--js/src/tests/ecma_6/Destructuring/array-default-class.js25
-rw-r--r--js/src/tests/ecma_6/Destructuring/array-iterator-close.js93
-rw-r--r--js/src/tests/ecma_6/Destructuring/order-super.js727
-rw-r--r--js/src/tests/ecma_6/Destructuring/order.js745
-rw-r--r--js/src/tests/ecma_6/Error/constructor-proto.js17
-rw-r--r--js/src/tests/ecma_6/Error/prototype-properties.js24
-rw-r--r--js/src/tests/ecma_6/Error/prototype.js18
-rw-r--r--js/src/tests/ecma_6/Error/shell.js0
-rw-r--r--js/src/tests/ecma_6/Function/function-name-assignment.js139
-rw-r--r--js/src/tests/ecma_6/Function/function-name-binding.js54
-rw-r--r--js/src/tests/ecma_6/Function/function-name-class.js32
-rw-r--r--js/src/tests/ecma_6/Function/function-name-for.js31
-rw-r--r--js/src/tests/ecma_6/Function/function-name-method.js70
-rw-r--r--js/src/tests/ecma_6/Function/function-name-property.js58
-rw-r--r--js/src/tests/ecma_6/Function/invalid-parameter-list.js27
-rw-r--r--js/src/tests/ecma_6/Generators/construct-newtarget.js79
-rw-r--r--js/src/tests/ecma_6/Generators/delegating-yield-2.js20
-rw-r--r--js/src/tests/ecma_6/Generators/subclass.js33
-rw-r--r--js/src/tests/ecma_6/Generators/yield-iterator-close.js58
-rw-r--r--js/src/tests/ecma_6/Generators/yield-star-iterator-close.js153
-rw-r--r--js/src/tests/ecma_6/Map/constructor-iterator-close.js253
-rw-r--r--js/src/tests/ecma_6/Object/accessor-name.js9
-rw-r--r--js/src/tests/ecma_6/Promise/iterator-close.js234
-rw-r--r--js/src/tests/ecma_6/RegExp/compile-lastIndex.js34
-rw-r--r--js/src/tests/ecma_6/RegExp/compile-symbol.js14
-rw-r--r--js/src/tests/ecma_6/RegExp/constructor-symbol.js14
-rw-r--r--js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js75
-rw-r--r--js/src/tests/ecma_6/RegExp/prototype.js31
-rw-r--r--js/src/tests/ecma_6/RegExp/replace-local-tolength-lastindex.js22
-rw-r--r--js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js75
-rw-r--r--js/src/tests/ecma_6/RegExp/search-trace.js2
-rw-r--r--js/src/tests/ecma_6/RegExp/unicode-ignoreCase-word-boundary.js25
-rw-r--r--js/src/tests/ecma_6/Statements/for-inof-finally.js78
-rw-r--r--js/src/tests/ecma_6/Statements/for-of-iterator-close-throw.js35
-rw-r--r--js/src/tests/ecma_6/Statements/for-of-iterator-close.js102
-rw-r--r--js/src/tests/ecma_6/Syntax/identifiers-with-extended-unicode-escape.js18
-rw-r--r--js/src/tests/ecma_6/shell.js52
-rw-r--r--js/src/tests/js1_8_5/extensions/clone-regexp.js1
-rw-r--r--js/src/tests/jstests.list10
-rw-r--r--js/src/threading/windows/ConditionVariable.cpp329
-rw-r--r--js/src/vm/ArgumentsObject.cpp6
-rw-r--r--js/src/vm/AsyncFunction.cpp24
-rw-r--r--js/src/vm/AsyncFunction.h3
-rw-r--r--js/src/vm/CommonPropertyNames.h2
-rw-r--r--js/src/vm/Debugger.cpp11
-rw-r--r--js/src/vm/ErrorObject.cpp69
-rw-r--r--js/src/vm/ErrorObject.h8
-rw-r--r--js/src/vm/ForOfIterator.cpp51
-rw-r--r--js/src/vm/GlobalObject.cpp4
-rw-r--r--js/src/vm/GlobalObject.h17
-rw-r--r--js/src/vm/Interpreter.cpp135
-rw-r--r--js/src/vm/Interpreter.h9
-rw-r--r--js/src/vm/ObjectGroup.cpp4
-rw-r--r--js/src/vm/Opcodes.h55
-rw-r--r--js/src/vm/RegExpObject.cpp13
-rw-r--r--js/src/vm/RegExpObject.h4
-rw-r--r--js/src/vm/SelfHosting.cpp10
-rw-r--r--js/src/vm/Shape.cpp8
-rw-r--r--js/src/vm/Stack.cpp2
-rw-r--r--js/src/vm/Stopwatch.h6
-rw-r--r--js/src/vm/StructuredClone.cpp7
-rw-r--r--js/src/vm/TypeInference.cpp2
-rw-r--r--js/src/vm/TypedArrayObject.cpp2
-rw-r--r--js/src/vm/Unicode.cpp879
-rw-r--r--js/src/vm/Unicode.h28
-rw-r--r--js/src/vm/UnicodeNonBMP.h10
-rwxr-xr-xjs/src/vm/make_unicode.py324
-rw-r--r--js/src/wasm/AsmJS.cpp89
193 files changed, 9902 insertions, 2472 deletions
diff --git a/js/src/builtin/Array.js b/js/src/builtin/Array.js
index 54b47b72f..45f90a7b8 100644
--- a/js/src/builtin/Array.js
+++ b/js/src/builtin/Array.js
@@ -784,7 +784,7 @@ function ArrayKeys() {
return CreateArrayIterator(this, ITEM_KIND_KEY);
}
-// ES6 draft rev31 (2015/01/15) 22.1.2.1 Array.from(source[, mapfn[, thisArg]]).
+// ES 2017 draft 0f10dba4ad18de92d47d421f378233a2eae8f077 22.1.2.1
function ArrayFrom(items, mapfn=undefined, thisArg=undefined) {
// Step 1.
var C = this;
@@ -795,44 +795,40 @@ function ArrayFrom(items, mapfn=undefined, thisArg=undefined) {
ThrowTypeError(JSMSG_NOT_FUNCTION, DecompileArg(1, mapfn));
var T = thisArg;
- // Steps 4-5.
+ // Step 4.
var usingIterator = GetMethod(items, std_iterator);
- // Step 6.
+ // Step 5.
if (usingIterator !== undefined) {
- // Steps 6.a-c.
+ // Steps 5.a-c.
var A = IsConstructor(C) ? new C() : [];
- // Steps 6.d-e.
- var iterator = GetIterator(items, usingIterator);
-
- // Step 6.f.
+ // Step 5.d.
var k = 0;
- // Step 6.g.
- // These steps cannot be implemented using a for-of loop.
- // See <https://bugs.ecmascript.org/show_bug.cgi?id=2883>.
- while (true) {
- // Steps 6.g.i-iii.
- var next = callContentFunction(iterator.next, iterator);
- if (!IsObject(next))
- ThrowTypeError(JSMSG_NEXT_RETURNED_PRIMITIVE);
-
- // Step 6.g.iv.
- if (next.done) {
- A.length = k;
- return A;
- }
-
- // Steps 6.g.v-vi.
- var nextValue = next.value;
+ // Step 5.c, 5.e.
+ var iteratorWrapper = { [std_iterator]() { return GetIterator(items, usingIterator); } };
+ for (var nextValue of allowContentIter(iteratorWrapper)) {
+ // Step 5.e.i.
+ // Disabled for performance reason. We won't hit this case on
+ // normal array, since _DefineDataProperty will throw before it.
+ // We could hit this when |A| is a proxy and it ignores
+ // |_DefineDataProperty|, but it happens only after too long loop.
+ /*
+ if (k >= 0x1fffffffffffff)
+ ThrowTypeError(JSMSG_TOO_LONG_ARRAY);
+ */
- // Steps 6.g.vii-viii.
+ // Steps 5.e.vi-vii.
var mappedValue = mapping ? callContentFunction(mapfn, thisArg, nextValue, k) : nextValue;
- // Steps 6.g.ix-xi.
+ // Steps 5.e.ii (reordered), 5.e.viii.
_DefineDataProperty(A, k++, mappedValue);
}
+
+ // Step 5.e.iv.
+ A.length = k;
+ return A;
}
// Step 7.
diff --git a/js/src/builtin/Classes.js b/js/src/builtin/Classes.js
index d0f20b5fd..24841d605 100644
--- a/js/src/builtin/Classes.js
+++ b/js/src/builtin/Classes.js
@@ -5,7 +5,7 @@
var DefaultDerivedClassConstructor =
class extends null {
constructor(...args) {
- super(...allowContentSpread(args));
+ super(...allowContentIter(args));
}
};
MakeDefaultConstructor(DefaultDerivedClassConstructor);
diff --git a/js/src/builtin/Intl.cpp b/js/src/builtin/Intl.cpp
index 990a4acdb..3a20c487b 100644
--- a/js/src/builtin/Intl.cpp
+++ b/js/src/builtin/Intl.cpp
@@ -765,42 +765,53 @@ static const JSFunctionSpec collator_methods[] = {
};
/**
- * Collator constructor.
- * Spec: ECMAScript Internationalization API Specification, 10.1
+ * 10.1.2 Intl.Collator([ locales [, options]])
+ *
+ * ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b
*/
static bool
Collator(JSContext* cx, const CallArgs& args, bool construct)
{
RootedObject obj(cx);
+ // We're following ECMA-402 1st Edition when Collator is called because of
+ // backward compatibility issues.
+ // See https://github.com/tc39/ecma402/issues/57
if (!construct) {
- // 10.1.2.1 step 3
+ // ES Intl 1st ed., 10.1.2.1 step 3
JSObject* intl = cx->global()->getOrCreateIntlObject(cx);
if (!intl)
return false;
RootedValue self(cx, args.thisv());
if (!self.isUndefined() && (!self.isObject() || self.toObject() != *intl)) {
- // 10.1.2.1 step 4
+ // ES Intl 1st ed., 10.1.2.1 step 4
obj = ToObject(cx, self);
if (!obj)
return false;
- // 10.1.2.1 step 5
+ // ES Intl 1st ed., 10.1.2.1 step 5
bool extensible;
if (!IsExtensible(cx, obj, &extensible))
return false;
if (!extensible)
return Throw(cx, obj, JSMSG_OBJECT_NOT_EXTENSIBLE);
} else {
- // 10.1.2.1 step 3.a
+ // ES Intl 1st ed., 10.1.2.1 step 3.a
construct = true;
}
}
if (construct) {
- // 10.1.3.1 paragraph 2
- RootedObject proto(cx, cx->global()->getOrCreateCollatorPrototype(cx));
- if (!proto)
+ // Steps 2-5 (Inlined 9.1.14, OrdinaryCreateFromConstructor).
+ RootedObject proto(cx);
+ if (args.isConstructing() && !GetPrototypeFromCallableConstructor(cx, args, &proto))
return false;
+
+ if (!proto) {
+ proto = cx->global()->getOrCreateCollatorPrototype(cx);
+ if (!proto)
+ return false;
+ }
+
obj = NewObjectWithGivenProto(cx, &CollatorClass, proto);
if (!obj)
return false;
@@ -808,15 +819,13 @@ Collator(JSContext* cx, const CallArgs& args, bool construct)
obj->as<NativeObject>().setReservedSlot(UCOLLATOR_SLOT, PrivateValue(nullptr));
}
- // 10.1.2.1 steps 1 and 2; 10.1.3.1 steps 1 and 2
RootedValue locales(cx, args.length() > 0 ? args[0] : UndefinedValue());
RootedValue options(cx, args.length() > 1 ? args[1] : UndefinedValue());
- // 10.1.2.1 step 6; 10.1.3.1 step 3
+ // Step 6.
if (!IntlInitialize(cx, obj, cx->names().InitializeCollator, locales, options))
return false;
- // 10.1.2.1 steps 3.a and 7
args.rval().setObject(*obj);
return true;
}
@@ -833,6 +842,7 @@ js::intl_Collator(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
+ MOZ_ASSERT(!args.isConstructing());
// intl_Collator is an intrinsic for self-hosted JavaScript, so it cannot
// be used with "new", but it still has to be treated as a constructor.
return Collator(cx, args, true);
@@ -1257,42 +1267,53 @@ static const JSFunctionSpec numberFormat_methods[] = {
};
/**
- * NumberFormat constructor.
- * Spec: ECMAScript Internationalization API Specification, 11.1
+ * 11.2.1 Intl.NumberFormat([ locales [, options]])
+ *
+ * ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b
*/
static bool
NumberFormat(JSContext* cx, const CallArgs& args, bool construct)
{
RootedObject obj(cx);
+ // We're following ECMA-402 1st Edition when NumberFormat is called
+ // because of backward compatibility issues.
+ // See https://github.com/tc39/ecma402/issues/57
if (!construct) {
- // 11.1.2.1 step 3
+ // ES Intl 1st ed., 11.1.2.1 step 3
JSObject* intl = cx->global()->getOrCreateIntlObject(cx);
if (!intl)
return false;
RootedValue self(cx, args.thisv());
if (!self.isUndefined() && (!self.isObject() || self.toObject() != *intl)) {
- // 11.1.2.1 step 4
+ // ES Intl 1st ed., 11.1.2.1 step 4
obj = ToObject(cx, self);
if (!obj)
return false;
- // 11.1.2.1 step 5
+ // ES Intl 1st ed., 11.1.2.1 step 5
bool extensible;
if (!IsExtensible(cx, obj, &extensible))
return false;
if (!extensible)
return Throw(cx, obj, JSMSG_OBJECT_NOT_EXTENSIBLE);
} else {
- // 11.1.2.1 step 3.a
+ // ES Intl 1st ed., 11.1.2.1 step 3.a
construct = true;
}
}
if (construct) {
- // 11.1.3.1 paragraph 2
- RootedObject proto(cx, cx->global()->getOrCreateNumberFormatPrototype(cx));
- if (!proto)
+ // Step 2 (Inlined 9.1.14, OrdinaryCreateFromConstructor).
+ RootedObject proto(cx);
+ if (args.isConstructing() && !GetPrototypeFromCallableConstructor(cx, args, &proto))
return false;
+
+ if (!proto) {
+ proto = cx->global()->getOrCreateNumberFormatPrototype(cx);
+ if (!proto)
+ return false;
+ }
+
obj = NewObjectWithGivenProto(cx, &NumberFormatClass, proto);
if (!obj)
return false;
@@ -1300,15 +1321,13 @@ NumberFormat(JSContext* cx, const CallArgs& args, bool construct)
obj->as<NativeObject>().setReservedSlot(UNUMBER_FORMAT_SLOT, PrivateValue(nullptr));
}
- // 11.1.2.1 steps 1 and 2; 11.1.3.1 steps 1 and 2
RootedValue locales(cx, args.length() > 0 ? args[0] : UndefinedValue());
RootedValue options(cx, args.length() > 1 ? args[1] : UndefinedValue());
- // 11.1.2.1 step 6; 11.1.3.1 step 3
+ // Step 3.
if (!IntlInitialize(cx, obj, cx->names().InitializeNumberFormat, locales, options))
return false;
- // 11.1.2.1 steps 3.a and 7
args.rval().setObject(*obj);
return true;
}
@@ -1325,6 +1344,7 @@ js::intl_NumberFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
+ MOZ_ASSERT(!args.isConstructing());
// intl_NumberFormat is an intrinsic for self-hosted JavaScript, so it
// cannot be used with "new", but it still has to be treated as a
// constructor.
@@ -1725,42 +1745,53 @@ static const JSFunctionSpec dateTimeFormat_methods[] = {
};
/**
- * DateTimeFormat constructor.
- * Spec: ECMAScript Internationalization API Specification, 12.1
+ * 12.2.1 Intl.DateTimeFormat([ locales [, options]])
+ *
+ * ES2017 Intl draft rev 94045d234762ad107a3d09bb6f7381a65f1a2f9b
*/
static bool
DateTimeFormat(JSContext* cx, const CallArgs& args, bool construct)
{
RootedObject obj(cx);
+ // We're following ECMA-402 1st Edition when DateTimeFormat is called
+ // because of backward compatibility issues.
+ // See https://github.com/tc39/ecma402/issues/57
if (!construct) {
- // 12.1.2.1 step 3
+ // ES Intl 1st ed., 12.1.2.1 step 3
JSObject* intl = cx->global()->getOrCreateIntlObject(cx);
if (!intl)
return false;
RootedValue self(cx, args.thisv());
if (!self.isUndefined() && (!self.isObject() || self.toObject() != *intl)) {
- // 12.1.2.1 step 4
+ // ES Intl 1st ed., 12.1.2.1 step 4
obj = ToObject(cx, self);
if (!obj)
return false;
- // 12.1.2.1 step 5
+ // ES Intl 1st ed., 12.1.2.1 step 5
bool extensible;
if (!IsExtensible(cx, obj, &extensible))
return false;
if (!extensible)
return Throw(cx, obj, JSMSG_OBJECT_NOT_EXTENSIBLE);
} else {
- // 12.1.2.1 step 3.a
+ // ES Intl 1st ed., 12.1.2.1 step 3.a
construct = true;
}
}
if (construct) {
- // 12.1.3.1 paragraph 2
- RootedObject proto(cx, cx->global()->getOrCreateDateTimeFormatPrototype(cx));
- if (!proto)
+ // Step 2 (Inlined 9.1.14, OrdinaryCreateFromConstructor).
+ RootedObject proto(cx);
+ if (args.isConstructing() && !GetPrototypeFromCallableConstructor(cx, args, &proto))
return false;
+
+ if (!proto) {
+ proto = cx->global()->getOrCreateDateTimeFormatPrototype(cx);
+ if (!proto)
+ return false;
+ }
+
obj = NewObjectWithGivenProto(cx, &DateTimeFormatClass, proto);
if (!obj)
return false;
@@ -1768,15 +1799,13 @@ DateTimeFormat(JSContext* cx, const CallArgs& args, bool construct)
obj->as<NativeObject>().setReservedSlot(UDATE_FORMAT_SLOT, PrivateValue(nullptr));
}
- // 12.1.2.1 steps 1 and 2; 12.1.3.1 steps 1 and 2
RootedValue locales(cx, args.length() > 0 ? args[0] : UndefinedValue());
RootedValue options(cx, args.length() > 1 ? args[1] : UndefinedValue());
- // 12.1.2.1 step 6; 12.1.3.1 step 3
+ // Step 3.
if (!IntlInitialize(cx, obj, cx->names().InitializeDateTimeFormat, locales, options))
return false;
- // 12.1.2.1 steps 3.a and 7
args.rval().setObject(*obj);
return true;
}
@@ -1793,6 +1822,7 @@ js::intl_DateTimeFormat(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
MOZ_ASSERT(args.length() == 2);
+ MOZ_ASSERT(!args.isConstructing());
// intl_DateTimeFormat is an intrinsic for self-hosted JavaScript, so it
// cannot be used with "new", but it still has to be treated as a
// constructor.
diff --git a/js/src/builtin/IntlTimeZoneData.h b/js/src/builtin/IntlTimeZoneData.h
index bb7d22109..f92c583df 100644
--- a/js/src/builtin/IntlTimeZoneData.h
+++ b/js/src/builtin/IntlTimeZoneData.h
@@ -1,5 +1,5 @@
// Generated by make_intl_data.py. DO NOT EDIT.
-// tzdata version = 2017c
+// tzdata version = 2018c
#ifndef builtin_IntlTimeZoneData_h
#define builtin_IntlTimeZoneData_h
diff --git a/js/src/builtin/Map.js b/js/src/builtin/Map.js
index 432364614..580629a13 100644
--- a/js/src/builtin/Map.js
+++ b/js/src/builtin/Map.js
@@ -14,31 +14,8 @@ function MapConstructorInit(iterable) {
if (!IsCallable(adder))
ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder);
- // Step 6.c.
- var iterFn = iterable[std_iterator];
- if (!IsCallable(iterFn))
- ThrowTypeError(JSMSG_NOT_ITERABLE, DecompileArg(0, iterable));
-
- var iter = callContentFunction(iterFn, iterable);
- if (!IsObject(iter))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof iter);
-
- // Step 7 (not applicable).
-
- // Step 8.
- while (true) {
- // Step 8.a.
- var next = callContentFunction(iter.next, iter);
- if (!IsObject(next))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof next);
-
- // Step 8.b.
- if (next.done)
- return;
-
- // Step 8.c.
- var nextItem = next.value;
-
+ // Steps 6.c-8.
+ for (var nextItem of allowContentIter(iterable)) {
// Step 8.d.
if (!IsObject(nextItem))
ThrowTypeError(JSMSG_INVALID_MAP_ITERABLE, "Map");
diff --git a/js/src/builtin/ModuleObject.cpp b/js/src/builtin/ModuleObject.cpp
index 3bfc8f60b..40fd008b9 100644
--- a/js/src/builtin/ModuleObject.cpp
+++ b/js/src/builtin/ModuleObject.cpp
@@ -1205,7 +1205,7 @@ ModuleBuilder::processExport(frontend::ParseNode* pn)
case PNK_FUNCTION: {
RootedFunction func(cx_, kid->pn_funbox->function());
if (!func->isArrow()) {
- RootedAtom localName(cx_, func->name());
+ RootedAtom localName(cx_, func->explicitName());
RootedAtom exportName(cx_, isDefault ? cx_->names().default_ : localName.get());
MOZ_ASSERT_IF(isDefault, localName);
if (!appendExportEntry(exportName, localName))
diff --git a/js/src/builtin/Promise.cpp b/js/src/builtin/Promise.cpp
index 59c97e529..c781a336d 100644
--- a/js/src/builtin/Promise.cpp
+++ b/js/src/builtin/Promise.cpp
@@ -1369,7 +1369,8 @@ PromiseObject::create(JSContext* cx, HandleObject executor, HandleObject proto /
static MOZ_MUST_USE bool PerformPromiseAll(JSContext *cx, JS::ForOfIterator& iterator,
HandleObject C, HandleObject promiseObj,
- HandleObject resolve, HandleObject reject);
+ HandleObject resolve, HandleObject reject,
+ bool* done);
// ES2016, 25.4.4.1.
static bool
@@ -1410,12 +1411,14 @@ Promise_static_all(JSContext* cx, unsigned argc, Value* vp)
// Step 6 (implicit).
// Step 7.
- bool result = PerformPromiseAll(cx, iter, C, resultPromise, resolve, reject);
+ bool done;
+ bool result = PerformPromiseAll(cx, iter, C, resultPromise, resolve, reject, &done);
// Step 8.
if (!result) {
// Step 8.a.
- // TODO: implement iterator closing.
+ if (!done)
+ iter.closeThrow();
// Step 8.b.
return AbruptRejectPromise(cx, args, resultPromise, reject);
@@ -1598,8 +1601,11 @@ RunResolutionFunction(JSContext *cx, HandleObject resolutionFun, HandleValue res
// ES2016, 25.4.4.1.1.
static MOZ_MUST_USE bool
PerformPromiseAll(JSContext *cx, JS::ForOfIterator& iterator, HandleObject C,
- HandleObject promiseObj, HandleObject resolve, HandleObject reject)
+ HandleObject promiseObj, HandleObject resolve, HandleObject reject,
+ bool* done)
{
+ *done = false;
+
RootedObject unwrappedPromiseObj(cx);
if (IsWrapper(promiseObj)) {
unwrappedPromiseObj = CheckedUnwrap(promiseObj);
@@ -1666,14 +1672,19 @@ PerformPromiseAll(JSContext *cx, JS::ForOfIterator& iterator, HandleObject C,
RootedValue rejectFunVal(cx, ObjectOrNullValue(reject));
while (true) {
- bool done;
- // Steps a, b, c, e, f, g.
- if (!iterator.next(&nextValue, &done))
+ // Steps a-c, e-g.
+ if (!iterator.next(&nextValue, done)) {
+ // Steps b, f.
+ *done = true;
+
+ // Steps c, g.
return false;
+ }
// Step d.
- if (done) {
+ if (*done) {
// Step d.i (implicit).
+
// Step d.ii.
int32_t remainingCount = dataHolder->decreaseRemainingCount();
@@ -1822,7 +1833,8 @@ PromiseAllResolveElementFunction(JSContext* cx, unsigned argc, Value* vp)
static MOZ_MUST_USE bool PerformPromiseRace(JSContext *cx, JS::ForOfIterator& iterator,
HandleObject C, HandleObject promiseObj,
- HandleObject resolve, HandleObject reject);
+ HandleObject resolve, HandleObject reject,
+ bool* done);
// ES2016, 25.4.4.3.
static bool
@@ -1863,12 +1875,14 @@ Promise_static_race(JSContext* cx, unsigned argc, Value* vp)
// Step 6 (implicit).
// Step 7.
- bool result = PerformPromiseRace(cx, iter, C, resultPromise, resolve, reject);
+ bool done;
+ bool result = PerformPromiseRace(cx, iter, C, resultPromise, resolve, reject, &done);
// Step 8.
if (!result) {
// Step 8.a.
- // TODO: implement iterator closing.
+ if (!done)
+ iter.closeThrow();
// Step 8.b.
return AbruptRejectPromise(cx, args, resultPromise, reject);
@@ -1882,25 +1896,30 @@ Promise_static_race(JSContext* cx, unsigned argc, Value* vp)
// ES2016, 25.4.4.3.1.
static MOZ_MUST_USE bool
PerformPromiseRace(JSContext *cx, JS::ForOfIterator& iterator, HandleObject C,
- HandleObject promiseObj, HandleObject resolve, HandleObject reject)
+ HandleObject promiseObj, HandleObject resolve, HandleObject reject,
+ bool* done)
{
+ *done = false;
MOZ_ASSERT(C->isConstructor());
RootedValue CVal(cx, ObjectValue(*C));
RootedValue nextValue(cx);
RootedValue resolveFunVal(cx, ObjectOrNullValue(resolve));
RootedValue rejectFunVal(cx, ObjectOrNullValue(reject));
- bool done;
while (true) {
// Steps a-c, e-g.
- if (!iterator.next(&nextValue, &done))
+ if (!iterator.next(&nextValue, done)) {
+ // Steps b, f.
+ *done = true;
+
+ // Steps c, g.
return false;
+ }
// Step d.
- if (done) {
- // Step d.i.
- // TODO: implement iterator closing.
+ if (*done) {
+ // Step d.i (implicit).
// Step d.ii.
return true;
diff --git a/js/src/builtin/ReflectParse.cpp b/js/src/builtin/ReflectParse.cpp
index 748ff7351..eef6fd7ec 100644
--- a/js/src/builtin/ReflectParse.cpp
+++ b/js/src/builtin/ReflectParse.cpp
@@ -3415,7 +3415,7 @@ ASTSerializer::function(ParseNode* pn, ASTType type, MutableHandleValue dst)
#endif
RootedValue id(cx);
- RootedAtom funcAtom(cx, func->name());
+ RootedAtom funcAtom(cx, func->explicitName());
if (!optIdentifier(funcAtom, nullptr, &id))
return false;
@@ -3423,7 +3423,7 @@ ASTSerializer::function(ParseNode* pn, ASTType type, MutableHandleValue dst)
NodeVector defaults(cx);
RootedValue body(cx), rest(cx);
- if (func->hasRest())
+ if (pn->pn_funbox->hasRest())
rest.setUndefined();
else
rest.setNull();
diff --git a/js/src/builtin/RegExp.cpp b/js/src/builtin/RegExp.cpp
index 80a4bb5bd..b20f41c53 100644
--- a/js/src/builtin/RegExp.cpp
+++ b/js/src/builtin/RegExp.cpp
@@ -577,14 +577,29 @@ js::regexp_clone(JSContext* cx, unsigned argc, Value* vp)
return true;
}
-/* ES6 draft rev32 21.2.5.4. */
+MOZ_ALWAYS_INLINE bool
+IsRegExpInstanceOrPrototype(HandleValue v)
+{
+ if (!v.isObject())
+ return false;
+
+ return StandardProtoKeyOrNull(&v.toObject()) == JSProto_RegExp;
+}
+
+// ES 2017 draft 21.2.5.4.
MOZ_ALWAYS_INLINE bool
regexp_global_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
- /* Steps 4-6. */
+ // Step 3.a.
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setUndefined();
+ return true;
+ }
+
+ // Steps 4-6.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
args.rval().setBoolean(reObj->global());
return true;
}
@@ -592,19 +607,25 @@ regexp_global_impl(JSContext* cx, const CallArgs& args)
bool
js::regexp_global(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-3. */
+ // Steps 1-3.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_global_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_global_impl>(cx, args);
}
-/* ES6 draft rev32 21.2.5.5. */
+// ES 2017 draft 21.2.5.5.
MOZ_ALWAYS_INLINE bool
regexp_ignoreCase_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
- /* Steps 4-6. */
+ // Step 3.a
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setUndefined();
+ return true;
+ }
+
+ // Steps 4-6.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
args.rval().setBoolean(reObj->ignoreCase());
return true;
}
@@ -612,19 +633,25 @@ regexp_ignoreCase_impl(JSContext* cx, const CallArgs& args)
bool
js::regexp_ignoreCase(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-3. */
+ // Steps 1-3.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_ignoreCase_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_ignoreCase_impl>(cx, args);
}
-/* ES6 draft rev32 21.2.5.7. */
+// ES 2017 draft 21.2.5.7.
MOZ_ALWAYS_INLINE bool
regexp_multiline_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
- /* Steps 4-6. */
+ // Step 3.a.
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setUndefined();
+ return true;
+ }
+
+ // Steps 4-6.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
args.rval().setBoolean(reObj->multiline());
return true;
}
@@ -632,24 +659,30 @@ regexp_multiline_impl(JSContext* cx, const CallArgs& args)
bool
js::regexp_multiline(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-3. */
+ // Steps 1-3.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_multiline_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_multiline_impl>(cx, args);
}
-/* ES6 draft rev32 21.2.5.10. */
+// ES 2017 draft rev32 21.2.5.10.
MOZ_ALWAYS_INLINE bool
regexp_source_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
+
+ // Step 3.a.
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setString(cx->names().emptyRegExp);
+ return true;
+ }
- /* Step 5. */
+ // Step 5.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
RootedAtom src(cx, reObj->getSource());
if (!src)
return false;
- /* Step 7. */
+ // Step 7.
RootedString str(cx, EscapeRegExpPattern(cx, src));
if (!str)
return false;
@@ -661,19 +694,25 @@ regexp_source_impl(JSContext* cx, const CallArgs& args)
static bool
regexp_source(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-4. */
+ // Steps 1-4.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_source_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_source_impl>(cx, args);
}
-/* ES6 draft rev32 21.2.5.12. */
+// ES 2017 draft 21.2.5.12.
MOZ_ALWAYS_INLINE bool
regexp_sticky_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
- /* Steps 4-6. */
+ // Step 3.a.
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setUndefined();
+ return true;
+ }
+
+ // Steps 4-6.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
args.rval().setBoolean(reObj->sticky());
return true;
}
@@ -681,27 +720,35 @@ regexp_sticky_impl(JSContext* cx, const CallArgs& args)
bool
js::regexp_sticky(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-3. */
+ // Steps 1-3.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_sticky_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_sticky_impl>(cx, args);
}
-/* ES6 21.2.5.15. */
+// ES 2017 draft 21.2.5.15.
MOZ_ALWAYS_INLINE bool
regexp_unicode_impl(JSContext* cx, const CallArgs& args)
{
- MOZ_ASSERT(IsRegExpObject(args.thisv()));
- /* Steps 4-6. */
- args.rval().setBoolean(args.thisv().toObject().as<RegExpObject>().unicode());
+ MOZ_ASSERT(IsRegExpInstanceOrPrototype(args.thisv()));
+
+ // Step 3.a.
+ if (!IsRegExpObject(args.thisv())) {
+ args.rval().setUndefined();
+ return true;
+ }
+
+ // Steps 4-6.
+ Rooted<RegExpObject*> reObj(cx, &args.thisv().toObject().as<RegExpObject>());
+ args.rval().setBoolean(reObj->unicode());
return true;
}
bool
js::regexp_unicode(JSContext* cx, unsigned argc, JS::Value* vp)
{
- /* Steps 1-3. */
+ // Steps 1-3.
CallArgs args = CallArgsFromVp(argc, vp);
- return CallNonGenericMethod<IsRegExpObject, regexp_unicode_impl>(cx, args);
+ return CallNonGenericMethod<IsRegExpInstanceOrPrototype, regexp_unicode_impl>(cx, args);
}
const JSPropertySpec js::regexp_properties[] = {
@@ -829,25 +876,6 @@ const JSPropertySpec js::regexp_static_props[] = {
JS_PS_END
};
-JSObject*
-js::CreateRegExpPrototype(JSContext* cx, JSProtoKey key)
-{
- MOZ_ASSERT(key == JSProto_RegExp);
-
- Rooted<RegExpObject*> proto(cx, cx->global()->createBlankPrototype<RegExpObject>(cx));
- if (!proto)
- return nullptr;
- proto->NativeObject::setPrivate(nullptr);
-
- if (!RegExpObject::assignInitialShape(cx, proto))
- return nullptr;
-
- RootedAtom source(cx, cx->names().empty);
- proto->initAndZeroLastIndex(source, RegExpFlag(0), cx);
-
- return proto;
-}
-
template <typename CharT>
static bool
IsTrailSurrogateWithLeadSurrogateImpl(JSContext* cx, HandleLinearString input, size_t index)
diff --git a/js/src/builtin/RegExp.js b/js/src/builtin/RegExp.js
index 1ffea0105..0b849292c 100644
--- a/js/src/builtin/RegExp.js
+++ b/js/src/builtin/RegExp.js
@@ -122,8 +122,7 @@ function RegExpMatch(string) {
}
// Step 5.
- var sticky = !!(flags & REGEXP_STICKY_FLAG);
- return RegExpLocalMatchOpt(rx, S, sticky);
+ return RegExpBuiltinExec(rx, S, false);
}
// Stes 4-6
@@ -220,37 +219,6 @@ function RegExpGlobalMatchOpt(rx, S, fullUnicode) {
}
}
-// ES 2017 draft rev 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e 21.2.5.6 step 5.
-// Optimized path for @@match without global flag.
-function RegExpLocalMatchOpt(rx, S, sticky) {
- // Step 4.
- var lastIndex = ToLength(rx.lastIndex);
-
- // Step 8.
- if (!sticky) {
- lastIndex = 0;
- } else {
- if (lastIndex > S.length) {
- // Steps 12.a.i-ii, 12.c.i.1-2.
- rx.lastIndex = 0;
- return null;
- }
- }
-
- // Steps 3, 9-25, except 12.a.i-ii, 12.c.i.1-2, 15.
- var result = RegExpMatcher(rx, S, lastIndex);
- if (result === null) {
- // Steps 12.a.i-ii, 12.c.i.1-2.
- rx.lastIndex = 0;
- } else {
- // Step 15.
- if (sticky)
- rx.lastIndex = result.index + result[0].length;
- }
-
- return result;
-}
-
// Checks if following properties and getters are not modified, and accessing
// them not observed by content script:
// * flags
@@ -318,9 +286,10 @@ function RegExpReplace(string, replaceValue) {
if (functionalReplace) {
var elemBase = GetElemBaseForLambda(replaceValue);
- if (IsObject(elemBase))
+ if (IsObject(elemBase)) {
return RegExpGlobalReplaceOptElemBase(rx, S, lengthS, replaceValue,
fullUnicode, elemBase);
+ }
return RegExpGlobalReplaceOptFunc(rx, S, lengthS, replaceValue,
fullUnicode);
}
@@ -336,18 +305,11 @@ function RegExpReplace(string, replaceValue) {
fullUnicode);
}
- var sticky = !!(flags & REGEXP_STICKY_FLAG);
-
- if (functionalReplace) {
- return RegExpLocalReplaceOptFunc(rx, S, lengthS, replaceValue,
- sticky);
- }
- if (firstDollarIndex !== -1) {
- return RegExpLocalReplaceOptSubst(rx, S, lengthS, replaceValue,
- sticky, firstDollarIndex);
- }
- return RegExpLocalReplaceOpt(rx, S, lengthS, replaceValue,
- sticky);
+ if (functionalReplace)
+ return RegExpLocalReplaceOptFunc(rx, S, lengthS, replaceValue);
+ if (firstDollarIndex !== -1)
+ return RegExpLocalReplaceOptSubst(rx, S, lengthS, replaceValue, firstDollarIndex);
+ return RegExpLocalReplaceOpt(rx, S, lengthS, replaceValue);
}
// Steps 8-16.
@@ -647,7 +609,8 @@ function RegExpGlobalReplaceShortOpt(rx, S, lengthS, replaceValue, fullUnicode)
#undef SUBSTITUTION
#undef FUNC_NAME
-// ES 2017 draft 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e 21.2.5.9.
+// ES2017 draft rev 6390c2f1b34b309895d31d8c0512eac8660a0210
+// 21.2.5.9 RegExp.prototype [ @@search ] ( string )
function RegExpSearch(string) {
// Step 1.
var rx = this;
@@ -659,41 +622,69 @@ function RegExpSearch(string) {
// Step 3.
var S = ToString(string);
+ // Step 4.
+ var previousLastIndex = rx.lastIndex;
+
+ // Step 5.
+ var lastIndexIsZero = SameValue(previousLastIndex, 0);
+ if (!lastIndexIsZero)
+ rx.lastIndex = 0;
+
if (IsRegExpMethodOptimizable(rx) && S.length < 0x7fff) {
// Step 6.
var result = RegExpSearcher(rx, S, 0);
- // Step 8.
+ // We need to consider two cases:
+ //
+ // 1. Neither global nor sticky is set:
+ // RegExpBuiltinExec doesn't modify lastIndex for local RegExps, that
+ // means |SameValue(rx.lastIndex, 0)| is true after calling exec. The
+ // comparison in steps 7-8 |SameValue(rx.lastIndex, previousLastIndex)|
+ // is therefore equal to the already computed |lastIndexIsZero| value.
+ //
+ // 2. Global or sticky flag is set.
+ // RegExpBuiltinExec will always update lastIndex and we need to
+ // restore the property to its original value.
+
+ // Steps 7-8.
+ if (!lastIndexIsZero) {
+ rx.lastIndex = previousLastIndex;
+ } else {
+ var flags = UnsafeGetInt32FromReservedSlot(rx, REGEXP_FLAGS_SLOT);
+ if (flags & (REGEXP_GLOBAL_FLAG | REGEXP_STICKY_FLAG))
+ rx.lastIndex = previousLastIndex;
+ }
+
+ // Step 9.
if (result === -1)
return -1;
- // Step 9.
+ // Step 10.
return result & 0x7fff;
}
- return RegExpSearchSlowPath(rx, S);
+ return RegExpSearchSlowPath(rx, S, previousLastIndex);
}
-// ES 2017 draft 6859bb9ccaea9c6ede81d71e5320e3833b92cb3e 21.2.5.9
-// steps 4-9.
-function RegExpSearchSlowPath(rx, S) {
- // Step 4.
- var previousLastIndex = rx.lastIndex;
-
- // Step 5.
- rx.lastIndex = 0;
-
+// ES2017 draft rev 6390c2f1b34b309895d31d8c0512eac8660a0210
+// 21.2.5.9 RegExp.prototype [ @@search ] ( string )
+// Steps 6-10.
+function RegExpSearchSlowPath(rx, S, previousLastIndex) {
// Step 6.
var result = RegExpExec(rx, S, false);
// Step 7.
- rx.lastIndex = previousLastIndex;
+ var currentLastIndex = rx.lastIndex;
// Step 8.
+ if (!SameValue(currentLastIndex, previousLastIndex))
+ rx.lastIndex = previousLastIndex;
+
+ // Step 9.
if (result === null)
return -1;
- // Step 9.
+ // Step 10.
return result.index;
}
@@ -942,15 +933,16 @@ function RegExpExec(R, S, forTest) {
return forTest ? result !== null : result;
}
-// ES 2017 draft rev 6a13789aa9e7c6de4e96b7d3e24d9e6eba6584ad 21.2.5.2.2.
+// ES2017 draft rev 6390c2f1b34b309895d31d8c0512eac8660a0210
+// 21.2.5.2.2 Runtime Semantics: RegExpBuiltinExec ( R, S )
function RegExpBuiltinExec(R, S, forTest) {
- // ES6 21.2.5.2.1 step 6.
+ // 21.2.5.2.1 Runtime Semantics: RegExpExec, step 5.
// This check is here for RegExpTest. RegExp_prototype_Exec does same
// thing already.
if (!IsRegExpObject(R))
return UnwrapAndCallRegExpBuiltinExec(R, S, forTest);
- // Steps 1-2 (skipped).
+ // Steps 1-3 (skipped).
// Step 4.
var lastIndex = ToLength(R.lastIndex);
@@ -965,9 +957,11 @@ function RegExpBuiltinExec(R, S, forTest) {
if (!globalOrSticky) {
lastIndex = 0;
} else {
+ // Step 12.a.
if (lastIndex > S.length) {
- // Steps 12.a.i-ii, 12.c.i.1-2.
- R.lastIndex = 0;
+ // Steps 12.a.i-ii.
+ if (globalOrSticky)
+ R.lastIndex = 0;
return forTest ? false : null;
}
}
@@ -977,7 +971,8 @@ function RegExpBuiltinExec(R, S, forTest) {
var endIndex = RegExpTester(R, S, lastIndex);
if (endIndex == -1) {
// Steps 12.a.i-ii, 12.c.i.1-2.
- R.lastIndex = 0;
+ if (globalOrSticky)
+ R.lastIndex = 0;
return false;
}
@@ -991,8 +986,9 @@ function RegExpBuiltinExec(R, S, forTest) {
// Steps 3, 9-25, except 12.a.i-ii, 12.c.i.1-2, 15.
var result = RegExpMatcher(R, S, lastIndex);
if (result === null) {
- // Steps 12.a.i-ii, 12.c.i.1-2.
- R.lastIndex = 0;
+ // Steps 12.a.i, 12.c.i.
+ if (globalOrSticky)
+ R.lastIndex = 0;
} else {
// Step 15.
if (globalOrSticky)
diff --git a/js/src/builtin/RegExpLocalReplaceOpt.h.js b/js/src/builtin/RegExpLocalReplaceOpt.h.js
index edc2e2056..1acd6a73a 100644
--- a/js/src/builtin/RegExpLocalReplaceOpt.h.js
+++ b/js/src/builtin/RegExpLocalReplaceOpt.h.js
@@ -11,24 +11,39 @@
// * FUNCTIONAL -- replaceValue is a function
// * neither of above -- replaceValue is a string without "$"
-// ES 2017 draft 03bfda119d060aca4099d2b77cf43f6d4f11cfa2 21.2.5.8
+// ES 2017 draft 6390c2f1b34b309895d31d8c0512eac8660a0210 21.2.5.8
// steps 11.a-16.
// Optimized path for @@replace with the following conditions:
// * global flag is false
-function FUNC_NAME(rx, S, lengthS, replaceValue, sticky
+function FUNC_NAME(rx, S, lengthS, replaceValue
#ifdef SUBSTITUTION
, firstDollarIndex
#endif
)
{
- var lastIndex;
- if (sticky) {
- lastIndex = ToLength(rx.lastIndex);
+ // 21.2.5.2.2 RegExpBuiltinExec, step 4.
+ var lastIndex = ToLength(rx.lastIndex);
+
+ // 21.2.5.2.2 RegExpBuiltinExec, step 5.
+ // Side-effects in step 4 can recompile the RegExp, so we need to read the
+ // flags again and handle the case when global was enabled even though this
+ // function is optimized for non-global RegExps.
+ var flags = UnsafeGetInt32FromReservedSlot(rx, REGEXP_FLAGS_SLOT);
+
+ // 21.2.5.2.2 RegExpBuiltinExec, steps 6-7.
+ var globalOrSticky = !!(flags & (REGEXP_GLOBAL_FLAG | REGEXP_STICKY_FLAG));
+
+ if (globalOrSticky) {
+ // 21.2.5.2.2 RegExpBuiltinExec, step 12.a.
if (lastIndex > lengthS) {
- rx.lastIndex = 0;
+ if (globalOrSticky)
+ rx.lastIndex = 0;
+
+ // Steps 12-16.
return S;
}
} else {
+ // 21.2.5.2.2 RegExpBuiltinExec, step 8.
lastIndex = 0;
}
@@ -37,7 +52,11 @@ function FUNC_NAME(rx, S, lengthS, replaceValue, sticky
// Step 11.b.
if (result === null) {
- rx.lastIndex = 0;
+ // 21.2.5.2.2 RegExpBuiltinExec, steps 12.a.i, 12.c.i.
+ if (globalOrSticky)
+ rx.lastIndex = 0;
+
+ // Steps 12-16.
return S;
}
@@ -61,7 +80,8 @@ function FUNC_NAME(rx, S, lengthS, replaceValue, sticky
// To set rx.lastIndex before RegExpGetComplexReplacement.
var nextSourcePosition = position + matchLength;
- if (sticky)
+ // 21.2.5.2.2 RegExpBuiltinExec, step 15.
+ if (globalOrSticky)
rx.lastIndex = nextSourcePosition;
var replacement;
diff --git a/js/src/builtin/Set.js b/js/src/builtin/Set.js
index accc70120..9af6cf8d1 100644
--- a/js/src/builtin/Set.js
+++ b/js/src/builtin/Set.js
@@ -14,34 +14,9 @@ function SetConstructorInit(iterable) {
if (!IsCallable(adder))
ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder);
- // Step 6.c.
- var iterFn = iterable[std_iterator];
- if (!IsCallable(iterFn))
- ThrowTypeError(JSMSG_NOT_ITERABLE, DecompileArg(0, iterable));
-
- var iter = callContentFunction(iterFn, iterable);
- if (!IsObject(iter))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof iter);
-
- // Step 7 (not applicable).
-
- // Step 8.
- while (true) {
- // Step 8.a.
- var next = callContentFunction(iter.next, iter);
- if (!IsObject(next))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof next);
-
- // Step 8.b.
- if (next.done)
- return;
-
- // Step 8.c.
- var nextValue = next.value;
-
- // Steps 8.d-e.
+ // Steps 6.c-8.
+ for (var nextValue of allowContentIter(iterable))
callContentFunction(adder, set, nextValue);
- }
}
/* ES6 20121122 draft 15.16.4.6. */
diff --git a/js/src/builtin/TypedArray.js b/js/src/builtin/TypedArray.js
index 4d2d6488f..a2205dc92 100644
--- a/js/src/builtin/TypedArray.js
+++ b/js/src/builtin/TypedArray.js
@@ -35,6 +35,10 @@ function IsDetachedBuffer(buffer) {
return (flags & JS_ARRAYBUFFER_DETACHED_FLAG) !== 0;
}
+function TypedArrayLengthMethod() {
+ return TypedArrayLength(this);
+}
+
function GetAttachedArrayBuffer(tarray) {
var buffer = ViewedArrayBufferIfReified(tarray);
if (IsDetachedBuffer(buffer))
@@ -42,6 +46,10 @@ function GetAttachedArrayBuffer(tarray) {
return buffer;
}
+function GetAttachedArrayBufferMethod() {
+ return GetAttachedArrayBuffer(this);
+}
+
// A function which ensures that the argument is either a typed array or a
// cross-compartment wrapper for a typed array and that the typed array involved
// has an attached array buffer. If one of those conditions doesn't hold (wrong
@@ -54,10 +62,7 @@ function IsTypedArrayEnsuringArrayBuffer(arg) {
return true;
}
- // This is a bit hacky but gets the job done: the first `arg` is used to
- // test for a wrapped typed array, the second as an argument to
- // GetAttachedArrayBuffer.
- callFunction(CallTypedArrayMethodIfWrapped, arg, arg, "GetAttachedArrayBuffer");
+ callFunction(CallTypedArrayMethodIfWrapped, arg, "GetAttachedArrayBufferMethod");
return false;
}
@@ -98,8 +103,8 @@ function TypedArrayCreateWithLength(constructor, length) {
if (isTypedArray) {
len = TypedArrayLength(newTypedArray);
} else {
- len = callFunction(CallTypedArrayMethodIfWrapped, newTypedArray, newTypedArray,
- "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, newTypedArray,
+ "TypedArrayLengthMethod");
}
if (len < length)
@@ -259,15 +264,14 @@ function TypedArrayEvery(callbackfn/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -348,15 +352,14 @@ function TypedArrayFilter(callbackfn/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Step 3.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 4.
if (arguments.length === 0)
@@ -410,15 +413,14 @@ function TypedArrayFind(predicate/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -452,15 +454,14 @@ function TypedArrayFindIndex(predicate/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -492,15 +493,14 @@ function TypedArrayForEach(callbackfn/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Step 3-4.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 5.
if (arguments.length === 0)
@@ -686,15 +686,14 @@ function TypedArrayMap(callbackfn/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Step 3.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 4.
if (arguments.length === 0)
@@ -730,15 +729,14 @@ function TypedArrayReduce(callbackfn/*, initialValue*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -776,15 +774,14 @@ function TypedArrayReduceRight(callbackfn/*, initialValue*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -1034,15 +1031,14 @@ function TypedArraySome(callbackfn/*, thisArg*/) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(O);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Steps 3-5.
var len;
if (isTypedArray)
len = TypedArrayLength(O);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, O, O, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, O, "TypedArrayLengthMethod");
// Step 6.
if (arguments.length === 0)
@@ -1137,7 +1133,7 @@ function TypedArraySort(comparefn) {
if (isTypedArray) {
buffer = GetAttachedArrayBuffer(obj);
} else {
- buffer = callFunction(CallTypedArrayMethodIfWrapped, obj, obj, "GetAttachedArrayBuffer");
+ buffer = callFunction(CallTypedArrayMethodIfWrapped, obj, "GetAttachedArrayBufferMethod");
}
// Step 3.
@@ -1145,7 +1141,7 @@ function TypedArraySort(comparefn) {
if (isTypedArray) {
len = TypedArrayLength(obj);
} else {
- len = callFunction(CallTypedArrayMethodIfWrapped, obj, obj, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, obj, "TypedArrayLengthMethod");
}
if (comparefn === undefined) {
@@ -1181,8 +1177,8 @@ function TypedArraySort(comparefn) {
if (isTypedArray) {
buffer = GetAttachedArrayBuffer(obj);
} else {
- buffer = callFunction(CallTypedArrayMethodIfWrapped, obj, obj,
- "GetAttachedArrayBuffer");
+ buffer = callFunction(CallTypedArrayMethodIfWrapped, obj,
+ "GetAttachedArrayBufferMethod");
}
}
var bufferDetached;
@@ -1217,15 +1213,14 @@ function TypedArrayToLocaleString(locales = undefined, options = undefined) {
// We want to make sure that we have an attached buffer, per spec prose.
var isTypedArray = IsTypedArrayEnsuringArrayBuffer(array);
- // If we got here, `this` is either a typed array or a cross-compartment
- // wrapper for one.
+ // If we got here, `this` is either a typed array or a wrapper for one.
// Step 2.
var len;
if (isTypedArray)
len = TypedArrayLength(array);
else
- len = callFunction(CallTypedArrayMethodIfWrapped, array, array, "TypedArrayLength");
+ len = callFunction(CallTypedArrayMethodIfWrapped, array, "TypedArrayLengthMethod");
// Step 4.
if (len === 0)
@@ -1433,7 +1428,7 @@ function TypedArrayStaticFrom(source, mapfn = undefined, thisArg = undefined) {
// 22.2.2.1.1 IterableToList, step 4.a.
var next = callContentFunction(iterator.next, iterator);
if (!IsObject(next))
- ThrowTypeError(JSMSG_NEXT_RETURNED_PRIMITIVE);
+ ThrowTypeError(JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, "next");
// 22.2.2.1.1 IterableToList, step 4.b.
if (next.done)
@@ -1560,7 +1555,7 @@ function IterableToList(items, method) {
// Step 4.a.
var next = callContentFunction(iterator.next, iterator);
if (!IsObject(next))
- ThrowTypeError(JSMSG_NEXT_RETURNED_PRIMITIVE);
+ ThrowTypeError(JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, "next");
// Step 4.b.
if (next.done)
diff --git a/js/src/builtin/TypedObject.cpp b/js/src/builtin/TypedObject.cpp
index b7297c894..ae74f01bf 100644
--- a/js/src/builtin/TypedObject.cpp
+++ b/js/src/builtin/TypedObject.cpp
@@ -230,7 +230,7 @@ const Class js::ScalarTypeDescr::class_ = {
const JSFunctionSpec js::ScalarTypeDescr::typeObjectMethods[] = {
JS_SELF_HOSTED_FN("toSource", "DescrToSource", 0, 0),
- JS_SELF_HOSTED_FN("array", "ArrayShorthand", 1, JSFUN_HAS_REST),
+ JS_SELF_HOSTED_FN("array", "ArrayShorthand", 1, 0),
JS_SELF_HOSTED_FN("equivalent", "TypeDescrEquivalent", 1, 0),
JS_FS_END
};
diff --git a/js/src/builtin/Utilities.js b/js/src/builtin/Utilities.js
index bfb1fe7f4..c73bc5e7f 100644
--- a/js/src/builtin/Utilities.js
+++ b/js/src/builtin/Utilities.js
@@ -106,7 +106,17 @@ function ToLength(v) {
return std_Math_min(v, 0x1fffffffffffff);
}
-/* Spec: ECMAScript Draft, 6th edition Oct 14, 2014, 7.2.4 */
+// ES2017 draft rev aebf014403a3e641fb1622aec47c40f051943527
+// 7.2.9 SameValue ( x, y )
+function SameValue(x, y) {
+ if (x === y) {
+ return (x !== 0) || (1 / x === 1 / y);
+ }
+ return (x !== x && y !== y);
+}
+
+// ES2017 draft rev aebf014403a3e641fb1622aec47c40f051943527
+// 7.2.10 SameValueZero ( x, y )
function SameValueZero(x, y) {
return x === y || (x !== x && y !== y);
}
diff --git a/js/src/builtin/WeakMap.js b/js/src/builtin/WeakMap.js
index 066a72bfe..6755b7a7b 100644
--- a/js/src/builtin/WeakMap.js
+++ b/js/src/builtin/WeakMap.js
@@ -14,31 +14,8 @@ function WeakMapConstructorInit(iterable) {
if (!IsCallable(adder))
ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder);
- // Step 6.c.
- var iterFn = iterable[std_iterator];
- if (!IsCallable(iterFn))
- ThrowTypeError(JSMSG_NOT_ITERABLE, DecompileArg(0, iterable));
-
- var iter = callContentFunction(iterFn, iterable);
- if (!IsObject(iter))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof iter);
-
- // Step 7 (not applicable).
-
- // Step 8.
- while (true) {
- // Step 8.a.
- var next = callContentFunction(iter.next, iter);
- if (!IsObject(next))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof next);
-
- // Step 8.b.
- if (next.done)
- return;
-
- // Step 8.c.
- var nextItem = next.value;
-
+ // Steps 6.c-8.
+ for (var nextItem of allowContentIter(iterable)) {
// Step 8.d.
if (!IsObject(nextItem))
ThrowTypeError(JSMSG_INVALID_MAP_ITERABLE, "WeakMap");
diff --git a/js/src/builtin/WeakSet.js b/js/src/builtin/WeakSet.js
index eb7c2378f..b16b4634d 100644
--- a/js/src/builtin/WeakSet.js
+++ b/js/src/builtin/WeakSet.js
@@ -14,34 +14,9 @@ function WeakSetConstructorInit(iterable) {
if (!IsCallable(adder))
ThrowTypeError(JSMSG_NOT_FUNCTION, typeof adder);
- // Step 6.c.
- var iterFn = iterable[std_iterator];
- if (!IsCallable(iterFn))
- ThrowTypeError(JSMSG_NOT_ITERABLE, DecompileArg(0, iterable));
-
- var iter = callContentFunction(iterFn, iterable);
- if (!IsObject(iter))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof iter);
-
- // Step 7 (not applicable).
-
- // Step 8.
- while (true) {
- // Step 8.a.
- var next = callContentFunction(iter.next, iter);
- if (!IsObject(next))
- ThrowTypeError(JSMSG_NOT_NONNULL_OBJECT, typeof next);
-
- // Step 8.b.
- if (next.done)
- return;
-
- // Step 8.c.
- var nextValue = next.value;
-
- // Steps 8.d-e.
+ // Steps 6.c-8.
+ for (var nextValue of allowContentIter(iterable))
callContentFunction(adder, set, nextValue);
- }
}
// 23.4.3.1
diff --git a/js/src/frontend/BytecodeCompiler.cpp b/js/src/frontend/BytecodeCompiler.cpp
index d4c758b6c..76afe80b1 100644
--- a/js/src/frontend/BytecodeCompiler.cpp
+++ b/js/src/frontend/BytecodeCompiler.cpp
@@ -7,6 +7,7 @@
#include "frontend/BytecodeCompiler.h"
#include "mozilla/IntegerPrintfMacros.h"
+#include "mozilla/Maybe.h"
#include "jscntxt.h"
#include "jsscript.h"
@@ -28,6 +29,7 @@
using namespace js;
using namespace js::frontend;
using mozilla::Maybe;
+using mozilla::Nothing;
class MOZ_STACK_CLASS AutoCompilationTraceLogger
{
@@ -57,24 +59,24 @@ class MOZ_STACK_CLASS BytecodeCompiler
// Call setters for optional arguments.
void maybeSetSourceCompressor(SourceCompressionTask* sourceCompressor);
- void setSourceArgumentsNotIncluded();
JSScript* compileGlobalScript(ScopeKind scopeKind);
JSScript* compileEvalScript(HandleObject environment, HandleScope enclosingScope);
ModuleObject* compileModule();
- bool compileFunctionBody(MutableHandleFunction fun, Handle<PropertyNameVector> formals,
- GeneratorKind generatorKind, FunctionAsyncKind asyncKind);
+ bool compileStandaloneFunction(MutableHandleFunction fun, GeneratorKind generatorKind,
+ FunctionAsyncKind asyncKind,
+ Maybe<uint32_t> parameterListEnd);
ScriptSourceObject* sourceObjectPtr() const;
private:
JSScript* compileScript(HandleObject environment, SharedContext* sc);
bool checkLength();
- bool createScriptSource();
+ bool createScriptSource(Maybe<uint32_t> parameterListEnd);
bool maybeCompressSource();
bool canLazilyParse();
bool createParser();
- bool createSourceAndParser();
+ bool createSourceAndParser(Maybe<uint32_t> parameterListEnd = Nothing());
bool createScript();
bool emplaceEmitter(Maybe<BytecodeEmitter>& emitter, SharedContext* sharedContext);
bool handleParseFailure(const Directives& newDirectives);
@@ -90,7 +92,6 @@ class MOZ_STACK_CLASS BytecodeCompiler
SourceBufferHolder& sourceBuffer;
RootedScope enclosingScope;
- bool sourceArgumentsNotIncluded;
RootedScriptSource sourceObject;
ScriptSource* scriptSource;
@@ -130,7 +131,6 @@ BytecodeCompiler::BytecodeCompiler(ExclusiveContext* cx,
options(options),
sourceBuffer(sourceBuffer),
enclosingScope(cx, enclosingScope),
- sourceArgumentsNotIncluded(false),
sourceObject(cx),
scriptSource(nullptr),
sourceCompressor(nullptr),
@@ -147,12 +147,6 @@ BytecodeCompiler::maybeSetSourceCompressor(SourceCompressionTask* sourceCompress
this->sourceCompressor = sourceCompressor;
}
-void
-BytecodeCompiler::setSourceArgumentsNotIncluded()
-{
- sourceArgumentsNotIncluded = true;
-}
-
bool
BytecodeCompiler::checkLength()
{
@@ -169,12 +163,12 @@ BytecodeCompiler::checkLength()
}
bool
-BytecodeCompiler::createScriptSource()
+BytecodeCompiler::createScriptSource(Maybe<uint32_t> parameterListEnd)
{
if (!checkLength())
return false;
- sourceObject = CreateScriptSourceObject(cx, options);
+ sourceObject = CreateScriptSourceObject(cx, options, parameterListEnd);
if (!sourceObject)
return false;
@@ -193,9 +187,7 @@ BytecodeCompiler::maybeCompressSource()
if (!cx->compartment()->behaviors().discardSource()) {
if (options.sourceIsLazy) {
scriptSource->setSourceRetrievable();
- } else if (!scriptSource->setSourceCopy(cx, sourceBuffer, sourceArgumentsNotIncluded,
- sourceCompressor))
- {
+ } else if (!scriptSource->setSourceCopy(cx, sourceBuffer, sourceCompressor)) {
return false;
}
}
@@ -242,9 +234,9 @@ BytecodeCompiler::createParser()
}
bool
-BytecodeCompiler::createSourceAndParser()
+BytecodeCompiler::createSourceAndParser(Maybe<uint32_t> parameterListEnd /* = Nothing() */)
{
- return createScriptSource() &&
+ return createScriptSource(parameterListEnd) &&
maybeCompressSource() &&
createParser();
}
@@ -344,10 +336,10 @@ BytecodeCompiler::compileScript(HandleObject environment, SharedContext* sc)
if (!deoptimizeArgumentsInEnclosingScripts(cx->asJSContext(), environment))
return nullptr;
}
- if (!NameFunctions(cx, pn))
- return nullptr;
if (!emitter->emitScript(pn))
return nullptr;
+ if (!NameFunctions(cx, pn))
+ return nullptr;
parser->handler.freeTree(pn);
break;
@@ -405,15 +397,15 @@ BytecodeCompiler::compileModule()
if (!pn)
return nullptr;
- if (!NameFunctions(cx, pn))
- return nullptr;
-
Maybe<BytecodeEmitter> emitter;
if (!emplaceEmitter(emitter, &modulesc))
return nullptr;
if (!emitter->emitScript(pn->pn_body))
return nullptr;
+ if (!NameFunctions(cx, pn))
+ return nullptr;
+
parser->handler.freeTree(pn);
if (!builder.initModule())
@@ -432,18 +424,19 @@ BytecodeCompiler::compileModule()
return module;
}
+// Compile a standalone JS function, which might appear as the value of an
+// event handler attribute in an HTML <INPUT> tag, or in a Function()
+// constructor.
bool
-BytecodeCompiler::compileFunctionBody(MutableHandleFunction fun,
- Handle<PropertyNameVector> formals,
- GeneratorKind generatorKind,
- FunctionAsyncKind asyncKind)
+BytecodeCompiler::compileStandaloneFunction(MutableHandleFunction fun,
+ GeneratorKind generatorKind,
+ FunctionAsyncKind asyncKind,
+ Maybe<uint32_t> parameterListEnd)
{
MOZ_ASSERT(fun);
MOZ_ASSERT(fun->isTenured());
- fun->setArgCount(formals.length());
-
- if (!createSourceAndParser())
+ if (!createSourceAndParser(parameterListEnd))
return false;
// Speculatively parse using the default directives implied by the context.
@@ -454,15 +447,12 @@ BytecodeCompiler::compileFunctionBody(MutableHandleFunction fun,
ParseNode* fn;
do {
Directives newDirectives = directives;
- fn = parser->standaloneFunctionBody(fun, enclosingScope, formals, generatorKind, asyncKind,
- directives, &newDirectives);
+ fn = parser->standaloneFunction(fun, enclosingScope, parameterListEnd, generatorKind,
+ asyncKind, directives, &newDirectives);
if (!fn && !handleParseFailure(newDirectives))
return false;
} while (!fn);
- if (!NameFunctions(cx, fn))
- return false;
-
if (fn->pn_funbox->function()->isInterpreted()) {
MOZ_ASSERT(fun == fn->pn_funbox->function());
@@ -479,6 +469,9 @@ BytecodeCompiler::compileFunctionBody(MutableHandleFunction fun,
MOZ_ASSERT(IsAsmJSModule(fun));
}
+ if (!NameFunctions(cx, fn))
+ return false;
+
if (!maybeCompleteCompressSource())
return false;
@@ -492,14 +485,15 @@ BytecodeCompiler::sourceObjectPtr() const
}
ScriptSourceObject*
-frontend::CreateScriptSourceObject(ExclusiveContext* cx, const ReadOnlyCompileOptions& options)
+frontend::CreateScriptSourceObject(ExclusiveContext* cx, const ReadOnlyCompileOptions& options,
+ Maybe<uint32_t> parameterListEnd /* = Nothing() */)
{
ScriptSource* ss = cx->new_<ScriptSource>();
if (!ss)
return nullptr;
ScriptSourceHolder ssHolder(ss);
- if (!ss->initFromOptions(cx, options))
+ if (!ss->initFromOptions(cx, options, parameterListEnd))
return nullptr;
RootedScriptSource sso(cx, ScriptSourceObject::create(cx, ss));
@@ -652,9 +646,6 @@ frontend::CompileLazyFunction(JSContext* cx, Handle<LazyScript*> lazy, const cha
if (!pn)
return false;
- if (!NameFunctions(cx, pn))
- return false;
-
RootedScriptSource sourceObject(cx, lazy->sourceObject());
MOZ_ASSERT(sourceObject);
@@ -673,66 +664,53 @@ frontend::CompileLazyFunction(JSContext* cx, Handle<LazyScript*> lazy, const cha
if (!bce.init())
return false;
- return bce.emitFunctionScript(pn->pn_body);
-}
-
-// Compile a JS function body, which might appear as the value of an event
-// handler attribute in an HTML <INPUT> tag, or in a Function() constructor.
-static bool
-CompileFunctionBody(JSContext* cx, MutableHandleFunction fun, const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, SourceBufferHolder& srcBuf,
- HandleScope enclosingScope, GeneratorKind generatorKind,
- FunctionAsyncKind asyncKind)
-{
- MOZ_ASSERT(!options.isRunOnce);
+ if (!bce.emitFunctionScript(pn->pn_body))
+ return false;
- // FIXME: make Function pass in two strings and parse them as arguments and
- // ProgramElements respectively.
+ if (!NameFunctions(cx, pn))
+ return false;
- BytecodeCompiler compiler(cx, cx->tempLifoAlloc(), options, srcBuf, enclosingScope,
- TraceLogger_ParserCompileFunction);
- compiler.setSourceArgumentsNotIncluded();
- return compiler.compileFunctionBody(fun, formals, generatorKind, asyncKind);
+ return true;
}
bool
-frontend::CompileFunctionBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf,
- HandleScope enclosingScope)
+frontend::CompileStandaloneFunction(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ Maybe<uint32_t> parameterListEnd,
+ HandleScope enclosingScope /* = nullptr */)
{
- return CompileFunctionBody(cx, fun, options, formals, srcBuf, enclosingScope, NotGenerator,
- SyncFunction);
-}
+ RootedScope scope(cx, enclosingScope);
+ if (!scope)
+ scope = &cx->global()->emptyGlobalScope();
-bool
-frontend::CompileFunctionBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf)
-{
- RootedScope emptyGlobalScope(cx, &cx->global()->emptyGlobalScope());
- return CompileFunctionBody(cx, fun, options, formals, srcBuf, emptyGlobalScope,
- NotGenerator, SyncFunction);
+ BytecodeCompiler compiler(cx, cx->tempLifoAlloc(), options, srcBuf, scope,
+ TraceLogger_ParserCompileFunction);
+ return compiler.compileStandaloneFunction(fun, NotGenerator, SyncFunction, parameterListEnd);
}
bool
-frontend::CompileStarGeneratorBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals,
- JS::SourceBufferHolder& srcBuf)
+frontend::CompileStandaloneGenerator(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ Maybe<uint32_t> parameterListEnd)
{
RootedScope emptyGlobalScope(cx, &cx->global()->emptyGlobalScope());
- return CompileFunctionBody(cx, fun, options, formals, srcBuf, emptyGlobalScope,
- StarGenerator, SyncFunction);
+
+ BytecodeCompiler compiler(cx, cx->tempLifoAlloc(), options, srcBuf, emptyGlobalScope,
+ TraceLogger_ParserCompileFunction);
+ return compiler.compileStandaloneFunction(fun, StarGenerator, SyncFunction, parameterListEnd);
}
bool
-frontend::CompileAsyncFunctionBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals,
- JS::SourceBufferHolder& srcBuf)
+frontend::CompileStandaloneAsyncFunction(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ Maybe<uint32_t> parameterListEnd)
{
RootedScope emptyGlobalScope(cx, &cx->global()->emptyGlobalScope());
- return CompileFunctionBody(cx, fun, options, formals, srcBuf, emptyGlobalScope,
- StarGenerator, AsyncFunction);
+
+ BytecodeCompiler compiler(cx, cx->tempLifoAlloc(), options, srcBuf, emptyGlobalScope,
+ TraceLogger_ParserCompileFunction);
+ return compiler.compileStandaloneFunction(fun, StarGenerator, AsyncFunction, parameterListEnd);
}
diff --git a/js/src/frontend/BytecodeCompiler.h b/js/src/frontend/BytecodeCompiler.h
index 1d86f1160..72e967639 100644
--- a/js/src/frontend/BytecodeCompiler.h
+++ b/js/src/frontend/BytecodeCompiler.h
@@ -7,6 +7,8 @@
#ifndef frontend_BytecodeCompiler_h
#define frontend_BytecodeCompiler_h
+#include "mozilla/Maybe.h"
+
#include "NamespaceImports.h"
#include "vm/Scope.h"
@@ -51,22 +53,36 @@ CompileModule(ExclusiveContext* cx, const ReadOnlyCompileOptions& options,
MOZ_MUST_USE bool
CompileLazyFunction(JSContext* cx, Handle<LazyScript*> lazy, const char16_t* chars, size_t length);
+//
+// Compile a single function. The source in srcBuf must match the ECMA-262
+// FunctionExpression production.
+//
+// If nonzero, parameterListEnd is the offset within srcBuf where the parameter
+// list is expected to end. During parsing, if we find that it ends anywhere
+// else, it's a SyntaxError. This is used to implement the Function constructor;
+// it's how we detect that these weird cases are SyntaxErrors:
+//
+// Function("/*", "*/x) {")
+// Function("x){ if (3", "return x;}")
+//
MOZ_MUST_USE bool
-CompileFunctionBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf,
- HandleScope enclosingScope);
+CompileStandaloneFunction(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ mozilla::Maybe<uint32_t> parameterListEnd,
+ HandleScope enclosingScope = nullptr);
-// As above, but defaults to the global lexical scope as the enclosing scope.
MOZ_MUST_USE bool
-CompileFunctionBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf);
+CompileStandaloneGenerator(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ mozilla::Maybe<uint32_t> parameterListEnd);
MOZ_MUST_USE bool
-CompileStarGeneratorBody(JSContext* cx, MutableHandleFunction fun,
- const ReadOnlyCompileOptions& options,
- Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf);
+CompileStandaloneAsyncFunction(JSContext* cx, MutableHandleFunction fun,
+ const ReadOnlyCompileOptions& options,
+ JS::SourceBufferHolder& srcBuf,
+ mozilla::Maybe<uint32_t> parameterListEnd);
MOZ_MUST_USE bool
CompileAsyncFunctionBody(JSContext* cx, MutableHandleFunction fun,
@@ -74,7 +90,8 @@ CompileAsyncFunctionBody(JSContext* cx, MutableHandleFunction fun,
Handle<PropertyNameVector> formals, JS::SourceBufferHolder& srcBuf);
ScriptSourceObject*
-CreateScriptSourceObject(ExclusiveContext* cx, const ReadOnlyCompileOptions& options);
+CreateScriptSourceObject(ExclusiveContext* cx, const ReadOnlyCompileOptions& options,
+ mozilla::Maybe<uint32_t> parameterListEnd = mozilla::Nothing());
/*
* True if str consists of an IdentifierStart character, followed by one or
diff --git a/js/src/frontend/BytecodeEmitter.cpp b/js/src/frontend/BytecodeEmitter.cpp
index 1e9d8f224..c7c615ccf 100644
--- a/js/src/frontend/BytecodeEmitter.cpp
+++ b/js/src/frontend/BytecodeEmitter.cpp
@@ -58,6 +58,7 @@ using mozilla::Some;
class BreakableControl;
class LabelControl;
class LoopControl;
+class ForOfLoopControl;
class TryFinallyControl;
static bool
@@ -152,6 +153,13 @@ BytecodeEmitter::NestableControl::is<LoopControl>() const
template <>
bool
+BytecodeEmitter::NestableControl::is<ForOfLoopControl>() const
+{
+ return kind_ == StatementKind::ForOfLoop;
+}
+
+template <>
+bool
BytecodeEmitter::NestableControl::is<TryFinallyControl>() const
{
return kind_ == StatementKind::Try || kind_ == StatementKind::Finally;
@@ -236,9 +244,9 @@ class LoopControl : public BreakableControl
loopDepth_ = enclosingLoop ? enclosingLoop->loopDepth_ + 1 : 1;
int loopSlots;
- if (loopKind == StatementKind::Spread)
+ if (loopKind == StatementKind::Spread || loopKind == StatementKind::ForOfLoop)
loopSlots = 3;
- else if (loopKind == StatementKind::ForInLoop || loopKind == StatementKind::ForOfLoop)
+ else if (loopKind == StatementKind::ForInLoop)
loopSlots = 2;
else
loopSlots = 0;
@@ -1053,7 +1061,7 @@ BytecodeEmitter::EmitterScope::enterFunction(BytecodeEmitter* bce, FunctionBox*
if (p) {
MOZ_ASSERT(bi.kind() == BindingKind::FormalParameter);
MOZ_ASSERT(!funbox->hasDestructuringArgs);
- MOZ_ASSERT(!funbox->function()->hasRest());
+ MOZ_ASSERT(!funbox->hasRest());
p->value() = loc;
continue;
}
@@ -1497,6 +1505,659 @@ BytecodeEmitter::TDZCheckCache::noteTDZCheck(BytecodeEmitter* bce, JSAtom* name,
return true;
}
+class MOZ_STACK_CLASS TryEmitter
+{
+ public:
+ enum Kind {
+ TryCatch,
+ TryCatchFinally,
+ TryFinally
+ };
+ enum ShouldUseRetVal {
+ UseRetVal,
+ DontUseRetVal
+ };
+ enum ShouldUseControl {
+ UseControl,
+ DontUseControl,
+ };
+
+ private:
+ BytecodeEmitter* bce_;
+ Kind kind_;
+ ShouldUseRetVal retValKind_;
+
+ // Track jumps-over-catches and gosubs-to-finally for later fixup.
+ //
+ // When a finally block is active, non-local jumps (including
+ // jumps-over-catches) result in a GOSUB being written into the bytecode
+ // stream and fixed-up later.
+ //
+ // If ShouldUseControl is DontUseControl, all that handling is skipped.
+ // DontUseControl is used by yield* and the internal try-catch around
+ // IteratorClose. These internal uses must:
+ // * have only one catch block
+ // * have no catch guard
+ // * have JSOP_GOTO at the end of catch-block
+ // * have no non-local-jump
+ // * don't use finally block for normal completion of try-block and
+ // catch-block
+ //
+ // Additionally, a finally block may be emitted when ShouldUseControl is
+ // DontUseControl, even if the kind is not TryCatchFinally or TryFinally,
+ // because GOSUBs are not emitted. This internal use shares the
+ // requirements as above.
+ Maybe<TryFinallyControl> controlInfo_;
+
+ int depth_;
+ unsigned noteIndex_;
+ ptrdiff_t tryStart_;
+ JumpList catchAndFinallyJump_;
+ JumpTarget tryEnd_;
+ JumpTarget finallyStart_;
+
+ enum State {
+ Start,
+ Try,
+ TryEnd,
+ Catch,
+ CatchEnd,
+ Finally,
+ FinallyEnd,
+ End
+ };
+ State state_;
+
+ bool hasCatch() const {
+ return kind_ == TryCatch || kind_ == TryCatchFinally;
+ }
+ bool hasFinally() const {
+ return kind_ == TryCatchFinally || kind_ == TryFinally;
+ }
+
+ public:
+ TryEmitter(BytecodeEmitter* bce, Kind kind, ShouldUseRetVal retValKind = UseRetVal,
+ ShouldUseControl controlKind = UseControl)
+ : bce_(bce),
+ kind_(kind),
+ retValKind_(retValKind),
+ depth_(0),
+ noteIndex_(0),
+ tryStart_(0),
+ state_(Start)
+ {
+ if (controlKind == UseControl)
+ controlInfo_.emplace(bce_, hasFinally() ? StatementKind::Finally : StatementKind::Try);
+ finallyStart_.offset = 0;
+ }
+
+ bool emitJumpOverCatchAndFinally() {
+ if (!bce_->emitJump(JSOP_GOTO, &catchAndFinallyJump_))
+ return false;
+ return true;
+ }
+
+ bool emitTry() {
+ MOZ_ASSERT(state_ == Start);
+
+ // Since an exception can be thrown at any place inside the try block,
+ // we need to restore the stack and the scope chain before we transfer
+ // the control to the exception handler.
+ //
+ // For that we store in a try note associated with the catch or
+ // finally block the stack depth upon the try entry. The interpreter
+ // uses this depth to properly unwind the stack and the scope chain.
+ depth_ = bce_->stackDepth;
+
+ // Record the try location, then emit the try block.
+ if (!bce_->newSrcNote(SRC_TRY, &noteIndex_))
+ return false;
+ if (!bce_->emit1(JSOP_TRY))
+ return false;
+ tryStart_ = bce_->offset();
+
+ state_ = Try;
+ return true;
+ }
+
+ private:
+ bool emitTryEnd() {
+ MOZ_ASSERT(state_ == Try);
+ MOZ_ASSERT(depth_ == bce_->stackDepth);
+
+ // GOSUB to finally, if present.
+ if (hasFinally() && controlInfo_) {
+ if (!bce_->emitJump(JSOP_GOSUB, &controlInfo_->gosubs))
+ return false;
+ }
+
+ // Source note points to the jump at the end of the try block.
+ if (!bce_->setSrcNoteOffset(noteIndex_, 0, bce_->offset() - tryStart_ + JSOP_TRY_LENGTH))
+ return false;
+
+ // Emit jump over catch and/or finally.
+ if (!bce_->emitJump(JSOP_GOTO, &catchAndFinallyJump_))
+ return false;
+
+ if (!bce_->emitJumpTarget(&tryEnd_))
+ return false;
+
+ return true;
+ }
+
+ public:
+ bool emitCatch() {
+ if (state_ == Try) {
+ if (!emitTryEnd())
+ return false;
+ } else {
+ MOZ_ASSERT(state_ == Catch);
+ if (!emitCatchEnd(true))
+ return false;
+ }
+
+ MOZ_ASSERT(bce_->stackDepth == depth_);
+
+ if (retValKind_ == UseRetVal) {
+ // Clear the frame's return value that might have been set by the
+ // try block:
+ //
+ // eval("try { 1; throw 2 } catch(e) {}"); // undefined, not 1
+ if (!bce_->emit1(JSOP_UNDEFINED))
+ return false;
+ if (!bce_->emit1(JSOP_SETRVAL))
+ return false;
+ }
+
+ state_ = Catch;
+ return true;
+ }
+
+ private:
+ bool emitCatchEnd(bool hasNext) {
+ MOZ_ASSERT(state_ == Catch);
+
+ if (!controlInfo_)
+ return true;
+
+ // gosub <finally>, if required.
+ if (hasFinally()) {
+ if (!bce_->emitJump(JSOP_GOSUB, &controlInfo_->gosubs))
+ return false;
+ MOZ_ASSERT(bce_->stackDepth == depth_);
+ }
+
+ // Jump over the remaining catch blocks. This will get fixed
+ // up to jump to after catch/finally.
+ if (!bce_->emitJump(JSOP_GOTO, &catchAndFinallyJump_))
+ return false;
+
+ // If this catch block had a guard clause, patch the guard jump to
+ // come here.
+ if (controlInfo_->guardJump.offset != -1) {
+ if (!bce_->emitJumpTargetAndPatch(controlInfo_->guardJump))
+ return false;
+ controlInfo_->guardJump.offset = -1;
+
+ // If this catch block is the last one, rethrow, delegating
+ // execution of any finally block to the exception handler.
+ if (!hasNext) {
+ if (!bce_->emit1(JSOP_EXCEPTION))
+ return false;
+ if (!bce_->emit1(JSOP_THROW))
+ return false;
+ }
+ }
+
+ return true;
+ }
+
+ public:
+ bool emitFinally(Maybe<uint32_t> finallyPos = Nothing()) {
+ // If we are using controlInfo_ (i.e., emitting a syntactic try
+ // blocks), we must have specified up front if there will be a finally
+ // close. For internal try blocks, like those emitted for yield* and
+ // IteratorClose inside for-of loops, we can emitFinally even without
+ // specifying up front, since the internal try blocks emit no GOSUBs.
+ if (!controlInfo_) {
+ if (kind_ == TryCatch)
+ kind_ = TryCatchFinally;
+ } else {
+ MOZ_ASSERT(hasFinally());
+ }
+
+ if (state_ == Try) {
+ if (!emitTryEnd())
+ return false;
+ } else {
+ MOZ_ASSERT(state_ == Catch);
+ if (!emitCatchEnd(false))
+ return false;
+ }
+
+ MOZ_ASSERT(bce_->stackDepth == depth_);
+
+ if (!bce_->emitJumpTarget(&finallyStart_))
+ return false;
+
+ if (controlInfo_) {
+ // Fix up the gosubs that might have been emitted before non-local
+ // jumps to the finally code.
+ bce_->patchJumpsToTarget(controlInfo_->gosubs, finallyStart_);
+
+ // Indicate that we're emitting a subroutine body.
+ controlInfo_->setEmittingSubroutine();
+ }
+ if (finallyPos) {
+ if (!bce_->updateSourceCoordNotes(finallyPos.value()))
+ return false;
+ }
+ if (!bce_->emit1(JSOP_FINALLY))
+ return false;
+
+ if (retValKind_ == UseRetVal) {
+ if (!bce_->emit1(JSOP_GETRVAL))
+ return false;
+
+ // Clear the frame's return value to make break/continue return
+ // correct value even if there's no other statement before them:
+ //
+ // eval("x: try { 1 } finally { break x; }"); // undefined, not 1
+ if (!bce_->emit1(JSOP_UNDEFINED))
+ return false;
+ if (!bce_->emit1(JSOP_SETRVAL))
+ return false;
+ }
+
+ state_ = Finally;
+ return true;
+ }
+
+ private:
+ bool emitFinallyEnd() {
+ MOZ_ASSERT(state_ == Finally);
+
+ if (retValKind_ == UseRetVal) {
+ if (!bce_->emit1(JSOP_SETRVAL))
+ return false;
+ }
+
+ if (!bce_->emit1(JSOP_RETSUB))
+ return false;
+
+ bce_->hasTryFinally = true;
+ return true;
+ }
+
+ public:
+ bool emitEnd() {
+ if (state_ == Catch) {
+ MOZ_ASSERT(!hasFinally());
+ if (!emitCatchEnd(false))
+ return false;
+ } else {
+ MOZ_ASSERT(state_ == Finally);
+ MOZ_ASSERT(hasFinally());
+ if (!emitFinallyEnd())
+ return false;
+ }
+
+ MOZ_ASSERT(bce_->stackDepth == depth_);
+
+ // ReconstructPCStack needs a NOP here to mark the end of the last
+ // catch block.
+ if (!bce_->emit1(JSOP_NOP))
+ return false;
+
+ // Fix up the end-of-try/catch jumps to come here.
+ if (!bce_->emitJumpTargetAndPatch(catchAndFinallyJump_))
+ return false;
+
+ // Add the try note last, to let post-order give us the right ordering
+ // (first to last for a given nesting level, inner to outer by level).
+ if (hasCatch()) {
+ if (!bce_->tryNoteList.append(JSTRY_CATCH, depth_, tryStart_, tryEnd_.offset))
+ return false;
+ }
+
+ // If we've got a finally, mark try+catch region with additional
+ // trynote to catch exceptions (re)thrown from a catch block or
+ // for the try{}finally{} case.
+ if (hasFinally()) {
+ if (!bce_->tryNoteList.append(JSTRY_FINALLY, depth_, tryStart_, finallyStart_.offset))
+ return false;
+ }
+
+ state_ = End;
+ return true;
+ }
+};
+
+class MOZ_STACK_CLASS IfThenElseEmitter
+{
+ BytecodeEmitter* bce_;
+ JumpList jumpAroundThen_;
+ JumpList jumpsAroundElse_;
+ unsigned noteIndex_;
+ int32_t thenDepth_;
+#ifdef DEBUG
+ int32_t pushed_;
+ bool calculatedPushed_;
+#endif
+ enum State {
+ Start,
+ If,
+ Cond,
+ IfElse,
+ Else,
+ End
+ };
+ State state_;
+
+ public:
+ explicit IfThenElseEmitter(BytecodeEmitter* bce)
+ : bce_(bce),
+ noteIndex_(-1),
+ thenDepth_(0),
+#ifdef DEBUG
+ pushed_(0),
+ calculatedPushed_(false),
+#endif
+ state_(Start)
+ {}
+
+ ~IfThenElseEmitter()
+ {}
+
+ private:
+ bool emitIf(State nextState) {
+ MOZ_ASSERT(state_ == Start || state_ == Else);
+ MOZ_ASSERT(nextState == If || nextState == IfElse || nextState == Cond);
+
+ // Clear jumpAroundThen_ offset that points previous JSOP_IFEQ.
+ if (state_ == Else)
+ jumpAroundThen_ = JumpList();
+
+ // Emit an annotated branch-if-false around the then part.
+ SrcNoteType type = nextState == If ? SRC_IF : nextState == IfElse ? SRC_IF_ELSE : SRC_COND;
+ if (!bce_->newSrcNote(type, &noteIndex_))
+ return false;
+ if (!bce_->emitJump(JSOP_IFEQ, &jumpAroundThen_))
+ return false;
+
+ // To restore stack depth in else part, save depth of the then part.
+#ifdef DEBUG
+ // If DEBUG, this is also necessary to calculate |pushed_|.
+ thenDepth_ = bce_->stackDepth;
+#else
+ if (nextState == IfElse || nextState == Cond)
+ thenDepth_ = bce_->stackDepth;
+#endif
+ state_ = nextState;
+ return true;
+ }
+
+ public:
+ bool emitIf() {
+ return emitIf(If);
+ }
+
+ bool emitCond() {
+ return emitIf(Cond);
+ }
+
+ bool emitIfElse() {
+ return emitIf(IfElse);
+ }
+
+ bool emitElse() {
+ MOZ_ASSERT(state_ == IfElse || state_ == Cond);
+
+ calculateOrCheckPushed();
+
+ // Emit a jump from the end of our then part around the else part. The
+ // patchJumpsToTarget call at the bottom of this function will fix up
+ // the offset with jumpsAroundElse value.
+ if (!bce_->emitJump(JSOP_GOTO, &jumpsAroundElse_))
+ return false;
+
+ // Ensure the branch-if-false comes here, then emit the else.
+ if (!bce_->emitJumpTargetAndPatch(jumpAroundThen_))
+ return false;
+
+ // Annotate SRC_IF_ELSE or SRC_COND with the offset from branch to
+ // jump, for IonMonkey's benefit. We can't just "back up" from the pc
+ // of the else clause, because we don't know whether an extended
+ // jump was required to leap from the end of the then clause over
+ // the else clause.
+ if (!bce_->setSrcNoteOffset(noteIndex_, 0,
+ jumpsAroundElse_.offset - jumpAroundThen_.offset))
+ {
+ return false;
+ }
+
+ // Restore stack depth of the then part.
+ bce_->stackDepth = thenDepth_;
+ state_ = Else;
+ return true;
+ }
+
+ bool emitEnd() {
+ MOZ_ASSERT(state_ == If || state_ == Else);
+
+ calculateOrCheckPushed();
+
+ if (state_ == If) {
+ // No else part, fixup the branch-if-false to come here.
+ if (!bce_->emitJumpTargetAndPatch(jumpAroundThen_))
+ return false;
+ }
+
+ // Patch all the jumps around else parts.
+ if (!bce_->emitJumpTargetAndPatch(jumpsAroundElse_))
+ return false;
+
+ state_ = End;
+ return true;
+ }
+
+ void calculateOrCheckPushed() {
+#ifdef DEBUG
+ if (!calculatedPushed_) {
+ pushed_ = bce_->stackDepth - thenDepth_;
+ calculatedPushed_ = true;
+ } else {
+ MOZ_ASSERT(pushed_ == bce_->stackDepth - thenDepth_);
+ }
+#endif
+ }
+
+#ifdef DEBUG
+ int32_t pushed() const {
+ return pushed_;
+ }
+
+ int32_t popped() const {
+ return -pushed_;
+ }
+#endif
+};
+
+class ForOfLoopControl : public LoopControl
+{
+ // The stack depth of the iterator.
+ int32_t iterDepth_;
+
+ // for-of loops, when throwing from non-iterator code (i.e. from the body
+ // or from evaluating the LHS of the loop condition), need to call
+ // IteratorClose. This is done by enclosing non-iterator code with
+ // try-catch and call IteratorClose in `catch` block.
+ // If IteratorClose itself throws, we must not re-call IteratorClose. Since
+ // non-local jumps like break and return call IteratorClose, whenever a
+ // non-local jump is emitted, we must tell catch block not to perform
+ // IteratorClose.
+ //
+ // for (x of y) {
+ // // Operations for iterator (IteratorNext etc) are outside of
+ // // try-block.
+ // try {
+ // ...
+ // if (...) {
+ // // Before non-local jump, clear iterator on the stack to tell
+ // // catch block not to perform IteratorClose.
+ // tmpIterator = iterator;
+ // iterator = undefined;
+ // IteratorClose(tmpIterator, { break });
+ // break;
+ // }
+ // ...
+ // } catch (e) {
+ // // Just throw again when iterator is cleared by non-local jump.
+ // if (iterator === undefined)
+ // throw e;
+ // IteratorClose(iterator, { throw, e });
+ // }
+ // }
+ Maybe<TryEmitter> tryCatch_;
+
+ // Used to track if any yields were emitted between calls to to
+ // emitBeginCodeNeedingIteratorClose and emitEndCodeNeedingIteratorClose.
+ uint32_t numYieldsAtBeginCodeNeedingIterClose_;
+
+ bool allowSelfHosted_;
+
+ public:
+ ForOfLoopControl(BytecodeEmitter* bce, int32_t iterDepth, bool allowSelfHosted)
+ : LoopControl(bce, StatementKind::ForOfLoop),
+ iterDepth_(iterDepth),
+ numYieldsAtBeginCodeNeedingIterClose_(UINT32_MAX),
+ allowSelfHosted_(allowSelfHosted)
+ {
+ }
+
+ bool emitBeginCodeNeedingIteratorClose(BytecodeEmitter* bce) {
+ tryCatch_.emplace(bce, TryEmitter::TryCatch, TryEmitter::DontUseRetVal,
+ TryEmitter::DontUseControl);
+
+ if (!tryCatch_->emitTry())
+ return false;
+
+ MOZ_ASSERT(numYieldsAtBeginCodeNeedingIterClose_ == UINT32_MAX);
+ numYieldsAtBeginCodeNeedingIterClose_ = bce->yieldOffsetList.numYields;
+
+ return true;
+ }
+
+ bool emitEndCodeNeedingIteratorClose(BytecodeEmitter* bce) {
+ if (!tryCatch_->emitCatch()) // ITER ...
+ return false;
+
+ if (!bce->emit1(JSOP_EXCEPTION)) // ITER ... EXCEPTION
+ return false;
+ unsigned slotFromTop = bce->stackDepth - iterDepth_;
+ if (!bce->emitDupAt(slotFromTop)) // ITER ... EXCEPTION ITER
+ return false;
+
+ // If ITER is undefined, it means the exception is thrown by
+ // IteratorClose for non-local jump, and we should't perform
+ // IteratorClose again here.
+ if (!bce->emit1(JSOP_UNDEFINED)) // ITER ... EXCEPTION ITER UNDEF
+ return false;
+ if (!bce->emit1(JSOP_STRICTNE)) // ITER ... EXCEPTION NE
+ return false;
+
+ IfThenElseEmitter ifIteratorIsNotClosed(bce);
+ if (!ifIteratorIsNotClosed.emitIf()) // ITER ... EXCEPTION
+ return false;
+
+ MOZ_ASSERT(slotFromTop == unsigned(bce->stackDepth - iterDepth_));
+ if (!bce->emitDupAt(slotFromTop)) // ITER ... EXCEPTION ITER
+ return false;
+ if (!emitIteratorClose(bce, CompletionKind::Throw)) // ITER ... EXCEPTION
+ return false;
+
+ if (!ifIteratorIsNotClosed.emitEnd()) // ITER ... EXCEPTION
+ return false;
+
+ if (!bce->emit1(JSOP_THROW)) // ITER ...
+ return false;
+
+ // If any yields were emitted, then this for-of loop is inside a star
+ // generator and must handle the case of Generator.return. Like in
+ // yield*, it is handled with a finally block.
+ uint32_t numYieldsEmitted = bce->yieldOffsetList.numYields;
+ if (numYieldsEmitted > numYieldsAtBeginCodeNeedingIterClose_) {
+ if (!tryCatch_->emitFinally())
+ return false;
+
+ IfThenElseEmitter ifGeneratorClosing(bce);
+ if (!bce->emit1(JSOP_ISGENCLOSING)) // ITER ... FTYPE FVALUE CLOSING
+ return false;
+ if (!ifGeneratorClosing.emitIf()) // ITER ... FTYPE FVALUE
+ return false;
+ if (!bce->emitDupAt(slotFromTop + 1)) // ITER ... FTYPE FVALUE ITER
+ return false;
+ if (!emitIteratorClose(bce, CompletionKind::Normal)) // ITER ... FTYPE FVALUE
+ return false;
+ if (!ifGeneratorClosing.emitEnd()) // ITER ... FTYPE FVALUE
+ return false;
+ }
+
+ if (!tryCatch_->emitEnd())
+ return false;
+
+ tryCatch_.reset();
+ numYieldsAtBeginCodeNeedingIterClose_ = UINT32_MAX;
+
+ return true;
+ }
+
+ bool emitIteratorClose(BytecodeEmitter* bce,
+ CompletionKind completionKind = CompletionKind::Normal) {
+ ptrdiff_t start = bce->offset();
+ if (!bce->emitIteratorClose(completionKind, allowSelfHosted_))
+ return false;
+ ptrdiff_t end = bce->offset();
+ return bce->tryNoteList.append(JSTRY_FOR_OF_ITERCLOSE, 0, start, end);
+ }
+
+ bool emitPrepareForNonLocalJump(BytecodeEmitter* bce, bool isTarget) {
+ // Pop unnecessary values from the stack. Effectively this means
+ // leaving try-catch block. However, the performing IteratorClose can
+ // reach the depth for try-catch, and effectively re-enter the
+ // try-catch block.
+ if (!bce->emit1(JSOP_POP)) // ITER RESULT
+ return false;
+ if (!bce->emit1(JSOP_POP)) // ITER
+ return false;
+
+ // Clear ITER slot on the stack to tell catch block to avoid performing
+ // IteratorClose again.
+ if (!bce->emit1(JSOP_UNDEFINED)) // ITER UNDEF
+ return false;
+ if (!bce->emit1(JSOP_SWAP)) // UNDEF ITER
+ return false;
+
+ if (!emitIteratorClose(bce)) // UNDEF
+ return false;
+
+ if (isTarget) {
+ // At the level of the target block, there's bytecode after the
+ // loop that will pop the iterator and the value, so push
+ // undefineds to balance the stack.
+ if (!bce->emit1(JSOP_UNDEFINED)) // UNDEF UNDEF
+ return false;
+ if (!bce->emit1(JSOP_UNDEFINED)) // UNDEF UNDEF UNDEF
+ return false;
+ } else {
+ if (!bce->emit1(JSOP_POP)) //
+ return false;
+ }
+
+ return true;
+ }
+};
+
BytecodeEmitter::BytecodeEmitter(BytecodeEmitter* parent,
Parser<FullParseHandler>* parser, SharedContext* sc,
HandleScript script, Handle<LazyScript*> lazyScript,
@@ -1855,6 +2516,12 @@ BytecodeEmitter::emitCheckIsObj(CheckIsObjectKind kind)
return emit2(JSOP_CHECKISOBJ, uint8_t(kind));
}
+bool
+BytecodeEmitter::emitCheckIsCallable(CheckIsCallableKind kind)
+{
+ return emit2(JSOP_CHECKISCALLABLE, uint8_t(kind));
+}
+
static inline unsigned
LengthOfSetLine(unsigned line)
{
@@ -2000,35 +2667,45 @@ BytecodeEmitter::emitUint32Operand(JSOp op, uint32_t operand)
return true;
}
-bool
-BytecodeEmitter::flushPops(int* npops)
-{
- MOZ_ASSERT(*npops != 0);
- if (!emitUint16Operand(JSOP_POPN, *npops))
- return false;
-
- *npops = 0;
- return true;
-}
-
namespace {
-class NonLocalExitControl {
+class NonLocalExitControl
+{
+ public:
+ enum Kind
+ {
+ // IteratorClose is handled especially inside the exception unwinder.
+ Throw,
+
+ // A 'continue' statement does not call IteratorClose for the loop it
+ // is continuing, i.e. excluding the target loop.
+ Continue,
+
+ // A 'break' or 'return' statement does call IteratorClose for the
+ // loop it is breaking out of or returning from, i.e. including the
+ // target loop.
+ Break,
+ Return
+ };
+
+ private:
BytecodeEmitter* bce_;
const uint32_t savedScopeNoteIndex_;
const int savedDepth_;
uint32_t openScopeNoteIndex_;
+ Kind kind_;
NonLocalExitControl(const NonLocalExitControl&) = delete;
MOZ_MUST_USE bool leaveScope(BytecodeEmitter::EmitterScope* scope);
public:
- explicit NonLocalExitControl(BytecodeEmitter* bce)
+ NonLocalExitControl(BytecodeEmitter* bce, Kind kind)
: bce_(bce),
savedScopeNoteIndex_(bce->scopeNoteList.length()),
savedDepth_(bce->stackDepth),
- openScopeNoteIndex_(bce->innermostEmitterScope->noteIndex())
+ openScopeNoteIndex_(bce->innermostEmitterScope->noteIndex()),
+ kind_(kind)
{ }
~NonLocalExitControl() {
@@ -2076,9 +2753,16 @@ NonLocalExitControl::prepareForNonLocalJump(BytecodeEmitter::NestableControl* ta
EmitterScope* es = bce_->innermostEmitterScope;
int npops = 0;
+ // For 'continue', 'break', and 'return' statements, emit IteratorClose
+ // bytecode inline. 'continue' statements do not call IteratorClose for
+ // the loop they are continuing.
+ bool emitIteratorClose = kind_ == Continue || kind_ == Break || kind_ == Return;
+ bool emitIteratorCloseAtTarget = emitIteratorClose && kind_ != Continue;
+
auto flushPops = [&npops](BytecodeEmitter* bce) {
- if (npops && !bce->flushPops(&npops))
+ if (npops && !bce->emitUint16Operand(JSOP_POPN, npops))
return false;
+ npops = 0;
return true;
};
@@ -2107,22 +2791,33 @@ NonLocalExitControl::prepareForNonLocalJump(BytecodeEmitter::NestableControl* ta
} else {
if (!flushPops(bce_))
return false;
- if (!bce_->emitJump(JSOP_GOSUB, &finallyControl.gosubs))
+ if (!bce_->emitJump(JSOP_GOSUB, &finallyControl.gosubs)) // ...
return false;
}
break;
}
case StatementKind::ForOfLoop:
- npops += 2;
+ if (emitIteratorClose) {
+ if (!flushPops(bce_))
+ return false;
+
+ ForOfLoopControl& loopinfo = control->as<ForOfLoopControl>();
+ if (!loopinfo.emitPrepareForNonLocalJump(bce_, /* isTarget = */ false)) // ...
+ return false;
+ } else {
+ npops += 3;
+ }
break;
case StatementKind::ForInLoop:
- /* The iterator and the current value are on the stack. */
- npops += 1;
if (!flushPops(bce_))
return false;
- if (!bce_->emit1(JSOP_ENDITER))
+
+ // The iterator and the current value are on the stack.
+ if (!bce_->emit1(JSOP_POP)) // ... ITER
+ return false;
+ if (!bce_->emit1(JSOP_ENDITER)) // ...
return false;
break;
@@ -2131,13 +2826,22 @@ NonLocalExitControl::prepareForNonLocalJump(BytecodeEmitter::NestableControl* ta
}
}
+ if (!flushPops(bce_))
+ return false;
+
+ if (target && emitIteratorCloseAtTarget && target->is<ForOfLoopControl>()) {
+ ForOfLoopControl& loopinfo = target->as<ForOfLoopControl>();
+ if (!loopinfo.emitPrepareForNonLocalJump(bce_, /* isTarget = */ true)) // ... UNDEF UNDEF UNDEF
+ return false;
+ }
+
EmitterScope* targetEmitterScope = target ? target->emitterScope() : bce_->varEmitterScope;
for (; es != targetEmitterScope; es = es->enclosingInFrame()) {
if (!leaveScope(es))
return false;
}
- return flushPops(bce_);
+ return true;
}
} // anonymous namespace
@@ -2145,7 +2849,9 @@ NonLocalExitControl::prepareForNonLocalJump(BytecodeEmitter::NestableControl* ta
bool
BytecodeEmitter::emitGoto(NestableControl* target, JumpList* jumplist, SrcNoteType noteType)
{
- NonLocalExitControl nle(this);
+ NonLocalExitControl nle(this, noteType == SRC_CONTINUE
+ ? NonLocalExitControl::Continue
+ : NonLocalExitControl::Break);
if (!nle.prepareForNonLocalJump(target))
return false;
@@ -4070,7 +4776,7 @@ BytecodeEmitter::isRunOnceLambda()
FunctionBox* funbox = sc->asFunctionBox();
return !funbox->argumentsHasLocalBinding() &&
!funbox->isGenerator() &&
- !funbox->function()->name();
+ !funbox->function()->explicitName();
}
bool
@@ -4091,6 +4797,11 @@ BytecodeEmitter::emitYieldOp(JSOp op)
return false;
}
+ if (op == JSOP_YIELD)
+ yieldOffsetList.numYields++;
+ else
+ yieldOffsetList.numAwaits++;
+
SET_UINT24(code(off), yieldIndex);
if (!yieldOffsetList.append(offset()))
@@ -4325,7 +5036,69 @@ BytecodeEmitter::emitDestructuringDeclsWithEmitter(ParseNode* pattern, NameEmitt
}
bool
-BytecodeEmitter::emitDestructuringLHS(ParseNode* target, DestructuringFlavor flav)
+BytecodeEmitter::emitDestructuringLHSRef(ParseNode* target, size_t* emitted)
+{
+ *emitted = 0;
+
+ if (target->isKind(PNK_SPREAD))
+ target = target->pn_kid;
+ else if (target->isKind(PNK_ASSIGN))
+ target = target->pn_left;
+
+ // No need to recur into PNK_ARRAY and PNK_OBJECT subpatterns here, since
+ // emitSetOrInitializeDestructuring does the recursion when setting or
+ // initializing value. Getting reference doesn't recur.
+ if (target->isKind(PNK_NAME) || target->isKind(PNK_ARRAY) || target->isKind(PNK_OBJECT))
+ return true;
+
+#ifdef DEBUG
+ int depth = stackDepth;
+#endif
+
+ switch (target->getKind()) {
+ case PNK_DOT: {
+ if (target->as<PropertyAccess>().isSuper()) {
+ if (!emitSuperPropLHS(&target->as<PropertyAccess>().expression()))
+ return false;
+ *emitted = 2;
+ } else {
+ if (!emitTree(target->pn_expr))
+ return false;
+ *emitted = 1;
+ }
+ break;
+ }
+
+ case PNK_ELEM: {
+ if (target->as<PropertyByValue>().isSuper()) {
+ if (!emitSuperElemOperands(target, EmitElemOption::Ref))
+ return false;
+ *emitted = 3;
+ } else {
+ if (!emitElemOperands(target, EmitElemOption::Ref))
+ return false;
+ *emitted = 2;
+ }
+ break;
+ }
+
+ case PNK_CALL:
+ MOZ_ASSERT_UNREACHABLE("Parser::reportIfNotValidSimpleAssignmentTarget "
+ "rejects function calls as assignment "
+ "targets in destructuring assignments");
+ break;
+
+ default:
+ MOZ_CRASH("emitDestructuringLHSRef: bad lhs kind");
+ }
+
+ MOZ_ASSERT(stackDepth == depth + int(*emitted));
+
+ return true;
+}
+
+bool
+BytecodeEmitter::emitSetOrInitializeDestructuring(ParseNode* target, DestructuringFlavor flav)
{
// Now emit the lvalue opcode sequence. If the lvalue is a nested
// destructuring initialiser-form, call ourselves to handle it, then pop
@@ -4401,44 +5174,28 @@ BytecodeEmitter::emitDestructuringLHS(ParseNode* target, DestructuringFlavor fla
}
case PNK_DOT: {
- // See the (PNK_NAME, JSOP_SETNAME) case above.
- //
- // In `a.x = b`, `a` is evaluated first, then `b`, then a
- // JSOP_SETPROP instruction.
- //
- // In `[a.x] = [b]`, per spec, `b` is evaluated before `a`. Then we
- // need a property set -- but the operands are on the stack in the
- // wrong order for JSOP_SETPROP, so we have to add a JSOP_SWAP.
+ // The reference is already pushed by emitDestructuringLHSRef.
JSOp setOp;
- if (target->as<PropertyAccess>().isSuper()) {
- if (!emitSuperPropLHS(&target->as<PropertyAccess>().expression()))
- return false;
- if (!emit2(JSOP_PICK, 2))
- return false;
+ if (target->as<PropertyAccess>().isSuper())
setOp = sc->strict() ? JSOP_STRICTSETPROP_SUPER : JSOP_SETPROP_SUPER;
- } else {
- if (!emitTree(target->pn_expr))
- return false;
- if (!emit1(JSOP_SWAP))
- return false;
+ else
setOp = sc->strict() ? JSOP_STRICTSETPROP : JSOP_SETPROP;
- }
if (!emitAtomOp(target, setOp))
return false;
break;
}
case PNK_ELEM: {
- // See the comment at `case PNK_DOT:` above. This case,
- // `[a[x]] = [b]`, is handled much the same way. The JSOP_SWAP
- // is emitted by emitElemOperands.
+ // The reference is already pushed by emitDestructuringLHSRef.
if (target->as<PropertyByValue>().isSuper()) {
JSOp setOp = sc->strict() ? JSOP_STRICTSETELEM_SUPER : JSOP_SETELEM_SUPER;
- if (!emitSuperElemOp(target, setOp))
+ // emitDestructuringLHSRef already did emitSuperElemOperands
+ // part of emitSuperElemOp. Perform remaining part here.
+ if (!emitElemOpBase(setOp))
return false;
} else {
JSOp setOp = sc->strict() ? JSOP_STRICTSETELEM : JSOP_SETELEM;
- if (!emitElemOp(target, setOp))
+ if (!emitElemOpBase(setOp))
return false;
}
break;
@@ -4451,7 +5208,7 @@ BytecodeEmitter::emitDestructuringLHS(ParseNode* target, DestructuringFlavor fla
break;
default:
- MOZ_CRASH("emitDestructuringLHS: bad lhs kind");
+ MOZ_CRASH("emitSetOrInitializeDestructuring: bad lhs kind");
}
// Pop the assigned value.
@@ -4463,14 +5220,7 @@ BytecodeEmitter::emitDestructuringLHS(ParseNode* target, DestructuringFlavor fla
}
bool
-BytecodeEmitter::emitConditionallyExecutedDestructuringLHS(ParseNode* target, DestructuringFlavor flav)
-{
- TDZCheckCache tdzCache(this);
- return emitDestructuringLHS(target, flav);
-}
-
-bool
-BytecodeEmitter::emitIteratorNext(ParseNode* pn, bool allowSelfHosted)
+BytecodeEmitter::emitIteratorNext(ParseNode* pn, bool allowSelfHosted /* = false */)
{
MOZ_ASSERT(allowSelfHosted || emitterMode != BytecodeEmitter::SelfHosting,
".next() iteration is prohibited in self-hosted code because it "
@@ -4491,178 +5241,241 @@ BytecodeEmitter::emitIteratorNext(ParseNode* pn, bool allowSelfHosted)
}
bool
-BytecodeEmitter::emitDefault(ParseNode* defaultExpr)
+BytecodeEmitter::emitIteratorClose(CompletionKind completionKind /* = CompletionKind::Normal */,
+ bool allowSelfHosted /* = false */)
{
- if (!emit1(JSOP_DUP)) // VALUE VALUE
- return false;
- if (!emit1(JSOP_UNDEFINED)) // VALUE VALUE UNDEFINED
- return false;
- if (!emit1(JSOP_STRICTEQ)) // VALUE EQL?
+ MOZ_ASSERT(allowSelfHosted || emitterMode != BytecodeEmitter::SelfHosting,
+ ".close() on iterators is prohibited in self-hosted code because it "
+ "can run user-modifiable iteration code");
+
+ // Generate inline logic corresponding to IteratorClose (ES 7.4.6).
+ //
+ // Callers need to ensure that the iterator object is at the top of the
+ // stack.
+
+ if (!emit1(JSOP_DUP)) // ... ITER ITER
return false;
- // Emit source note to enable ion compilation.
- if (!newSrcNote(SRC_IF))
+
+ // Step 3.
+ //
+ // Get the "return" method.
+ if (!emitAtomOp(cx->names().return_, JSOP_CALLPROP)) // ... ITER RET
return false;
- JumpList jump;
- if (!emitJump(JSOP_IFEQ, &jump)) // VALUE
+
+ // Step 4.
+ //
+ // Do nothing if "return" is null or undefined.
+ IfThenElseEmitter ifReturnMethodIsDefined(this);
+ if (!emit1(JSOP_DUP)) // ... ITER RET RET
return false;
- if (!emit1(JSOP_POP)) // .
+ if (!emit1(JSOP_UNDEFINED)) // ... ITER RET RET UNDEFINED
return false;
- if (!emitConditionallyExecutedTree(defaultExpr)) // DEFAULTVALUE
+ if (!emit1(JSOP_NE)) // ... ITER RET ?NEQL
return false;
- if (!emitJumpTargetAndPatch(jump))
+ if (!ifReturnMethodIsDefined.emitIfElse())
return false;
- return true;
-}
-
-class MOZ_STACK_CLASS IfThenElseEmitter
-{
- BytecodeEmitter* bce_;
- JumpList jumpAroundThen_;
- JumpList jumpsAroundElse_;
- unsigned noteIndex_;
- int32_t thenDepth_;
-#ifdef DEBUG
- int32_t pushed_;
- bool calculatedPushed_;
-#endif
- enum State {
- Start,
- If,
- Cond,
- IfElse,
- Else,
- End
- };
- State state_;
- public:
- explicit IfThenElseEmitter(BytecodeEmitter* bce)
- : bce_(bce),
- noteIndex_(-1),
- thenDepth_(0),
-#ifdef DEBUG
- pushed_(0),
- calculatedPushed_(false),
-#endif
- state_(Start)
- {}
+ if (completionKind == CompletionKind::Throw) {
+ // 7.4.6 IteratorClose ( iterator, completion )
+ // ...
+ // 3. Let return be ? GetMethod(iterator, "return").
+ // 4. If return is undefined, return Completion(completion).
+ // 5. Let innerResult be Call(return, iterator, « »).
+ // 6. If completion.[[Type]] is throw, return Completion(completion).
+ // 7. If innerResult.[[Type]] is throw, return
+ // Completion(innerResult).
+ //
+ // For CompletionKind::Normal case, JSOP_CALL for step 5 checks if RET
+ // is callable, and throws if not. Since step 6 doesn't match and
+ // error handling in step 3 and step 7 can be merged.
+ //
+ // For CompletionKind::Throw case, an error thrown by JSOP_CALL for
+ // step 5 is ignored by try-catch. So we should check if RET is
+ // callable here, outside of try-catch, and the throw immediately if
+ // not.
+ CheckIsCallableKind kind = CheckIsCallableKind::IteratorReturn;
+ if (!emitCheckIsCallable(kind)) // ... ITER RET
+ return false;
+ }
- ~IfThenElseEmitter()
- {}
+ // Steps 5, 8.
+ //
+ // Call "return" if it is not undefined or null, and check that it returns
+ // an Object.
+ if (!emit1(JSOP_SWAP)) // ... RET ITER
+ return false;
- private:
- bool emitIf(State nextState) {
- MOZ_ASSERT(state_ == Start || state_ == Else);
- MOZ_ASSERT(nextState == If || nextState == IfElse || nextState == Cond);
+ Maybe<TryEmitter> tryCatch;
- // Clear jumpAroundThen_ offset that points previous JSOP_IFEQ.
- if (state_ == Else)
- jumpAroundThen_ = JumpList();
+ if (completionKind == CompletionKind::Throw) {
+ tryCatch.emplace(this, TryEmitter::TryCatch, TryEmitter::DontUseRetVal,
+ TryEmitter::DontUseControl);
- // Emit an annotated branch-if-false around the then part.
- SrcNoteType type = nextState == If ? SRC_IF : nextState == IfElse ? SRC_IF_ELSE : SRC_COND;
- if (!bce_->newSrcNote(type, &noteIndex_))
+ // Mutate stack to balance stack for try-catch.
+ if (!emit1(JSOP_UNDEFINED)) // ... RET ITER UNDEF
return false;
- if (!bce_->emitJump(JSOP_IFEQ, &jumpAroundThen_))
+ if (!tryCatch->emitTry()) // ... RET ITER UNDEF
+ return false;
+ if (!emitDupAt(2)) // ... RET ITER UNDEF RET
+ return false;
+ if (!emitDupAt(2)) // ... RET ITER UNDEF RET ITER
return false;
-
- // To restore stack depth in else part, save depth of the then part.
-#ifdef DEBUG
- // If DEBUG, this is also necessary to calculate |pushed_|.
- thenDepth_ = bce_->stackDepth;
-#else
- if (nextState == IfElse || nextState == Cond)
- thenDepth_ = bce_->stackDepth;
-#endif
- state_ = nextState;
- return true;
- }
-
- public:
- bool emitIf() {
- return emitIf(If);
- }
-
- bool emitCond() {
- return emitIf(Cond);
- }
-
- bool emitIfElse() {
- return emitIf(IfElse);
}
- bool emitElse() {
- MOZ_ASSERT(state_ == IfElse || state_ == Cond);
+ if (!emitCall(JSOP_CALL, 0)) // ... ... RESULT
+ return false;
+ checkTypeSet(JSOP_CALL);
- calculateOrCheckPushed();
+ if (completionKind == CompletionKind::Throw) {
+ if (!emit1(JSOP_SWAP)) // ... RET ITER RESULT UNDEF
+ return false;
+ if (!emit1(JSOP_POP)) // ... RET ITER RESULT
+ return false;
- // Emit a jump from the end of our then part around the else part. The
- // patchJumpsToTarget call at the bottom of this function will fix up
- // the offset with jumpsAroundElse value.
- if (!bce_->emitJump(JSOP_GOTO, &jumpsAroundElse_))
+ if (!tryCatch->emitCatch()) // ... RET ITER RESULT
return false;
- // Ensure the branch-if-false comes here, then emit the else.
- if (!bce_->emitJumpTargetAndPatch(jumpAroundThen_))
+ // Just ignore the exception thrown by call.
+ if (!emit1(JSOP_EXCEPTION)) // ... RET ITER RESULT EXC
+ return false;
+ if (!emit1(JSOP_POP)) // ... RET ITER RESULT
return false;
- // Annotate SRC_IF_ELSE or SRC_COND with the offset from branch to
- // jump, for IonMonkey's benefit. We can't just "back up" from the pc
- // of the else clause, because we don't know whether an extended
- // jump was required to leap from the end of the then clause over
- // the else clause.
- if (!bce_->setSrcNoteOffset(noteIndex_, 0,
- jumpsAroundElse_.offset - jumpAroundThen_.offset))
- {
+ if (!tryCatch->emitEnd()) // ... RET ITER RESULT
return false;
- }
- // Restore stack depth of the then part.
- bce_->stackDepth = thenDepth_;
- state_ = Else;
- return true;
+ // Restore stack.
+ if (!emit2(JSOP_UNPICK, 2)) // ... RESULT RET ITER
+ return false;
+ if (!emit1(JSOP_POP)) // ... RESULT RET
+ return false;
+ if (!emit1(JSOP_POP)) // ... RESULT
+ return false;
+ } else {
+ if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) // ... RESULT
+ return false;
}
- bool emitEnd() {
- MOZ_ASSERT(state_ == If || state_ == Else);
+ if (!ifReturnMethodIsDefined.emitElse())
+ return false;
+ if (!emit1(JSOP_POP)) // ... ITER
+ return false;
+ if (!ifReturnMethodIsDefined.emitEnd())
+ return false;
- calculateOrCheckPushed();
+ return emit1(JSOP_POP); // ...
+}
- if (state_ == If) {
- // No else part, fixup the branch-if-false to come here.
- if (!bce_->emitJumpTargetAndPatch(jumpAroundThen_))
+template <typename InnerEmitter>
+bool
+BytecodeEmitter::wrapWithDestructuringIteratorCloseTryNote(int32_t iterDepth, InnerEmitter emitter)
+{
+ MOZ_ASSERT(this->stackDepth >= iterDepth);
+
+ // Pad a nop at the beginning of the bytecode covered by the trynote so
+ // that when unwinding environments, we may unwind to the scope
+ // corresponding to the pc *before* the start, in case the first bytecode
+ // emitted by |emitter| is the start of an inner scope. See comment above
+ // UnwindEnvironmentToTryPc.
+ if (!emit1(JSOP_TRY_DESTRUCTURING_ITERCLOSE))
+ return false;
+
+ ptrdiff_t start = offset();
+ if (!emitter(this))
+ return false;
+ ptrdiff_t end = offset();
+ if (start != end)
+ return tryNoteList.append(JSTRY_DESTRUCTURING_ITERCLOSE, iterDepth, start, end);
+ return true;
+}
+
+bool
+BytecodeEmitter::emitDefault(ParseNode* defaultExpr, ParseNode* pattern)
+{
+ if (!emit1(JSOP_DUP)) // VALUE VALUE
+ return false;
+ if (!emit1(JSOP_UNDEFINED)) // VALUE VALUE UNDEFINED
+ return false;
+ if (!emit1(JSOP_STRICTEQ)) // VALUE EQL?
+ return false;
+ // Emit source note to enable ion compilation.
+ if (!newSrcNote(SRC_IF))
+ return false;
+ JumpList jump;
+ if (!emitJump(JSOP_IFEQ, &jump)) // VALUE
+ return false;
+ if (!emit1(JSOP_POP)) // .
+ return false;
+ if (!emitInitializerInBranch(defaultExpr, pattern)) // DEFAULTVALUE
+ return false;
+ if (!emitJumpTargetAndPatch(jump))
+ return false;
+ return true;
+}
+
+bool
+BytecodeEmitter::setOrEmitSetFunName(ParseNode* maybeFun, HandleAtom name,
+ FunctionPrefixKind prefixKind)
+{
+ if (maybeFun->isKind(PNK_FUNCTION)) {
+ // Function doesn't have 'name' property at this point.
+ // Set function's name at compile time.
+ RootedFunction fun(cx, maybeFun->pn_funbox->function());
+
+ // Single node can be emitted multiple times if it appears in
+ // array destructuring default. If function already has a name,
+ // just return.
+ if (fun->hasCompileTimeName()) {
+#ifdef DEBUG
+ RootedAtom funName(cx, NameToFunctionName(cx, name, prefixKind));
+ if (!funName)
return false;
+ MOZ_ASSERT(funName == maybeFun->pn_funbox->function()->compileTimeName());
+#endif
+ return true;
}
- // Patch all the jumps around else parts.
- if (!bce_->emitJumpTargetAndPatch(jumpsAroundElse_))
+ RootedAtom funName(cx, NameToFunctionName(cx, name, prefixKind));
+ if (!funName)
return false;
-
- state_ = End;
+ fun->setCompileTimeName(name);
return true;
}
- void calculateOrCheckPushed() {
-#ifdef DEBUG
- if (!calculatedPushed_) {
- pushed_ = bce_->stackDepth - thenDepth_;
- calculatedPushed_ = true;
- } else {
- MOZ_ASSERT(pushed_ == bce_->stackDepth - thenDepth_);
- }
-#endif
- }
+ uint32_t nameIndex;
+ if (!makeAtomIndex(name, &nameIndex))
+ return false;
+ if (!emitIndexOp(JSOP_STRING, nameIndex)) // FUN NAME
+ return false;
+ uint8_t kind = uint8_t(prefixKind);
+ if (!emit2(JSOP_SETFUNNAME, kind)) // FUN
+ return false;
+ return true;
+}
-#ifdef DEBUG
- int32_t pushed() const {
- return pushed_;
- }
+bool
+BytecodeEmitter::emitInitializer(ParseNode* initializer, ParseNode* pattern)
+{
+ if (!emitTree(initializer))
+ return false;
- int32_t popped() const {
- return -pushed_;
+ if (!pattern->isInParens() && pattern->isKind(PNK_NAME) &&
+ initializer->isDirectRHSAnonFunction())
+ {
+ RootedAtom name(cx, pattern->name());
+ if (!setOrEmitSetFunName(initializer, name, FunctionPrefixKind::None))
+ return false;
}
-#endif
-};
+
+ return true;
+}
+
+bool
+BytecodeEmitter::emitInitializerInBranch(ParseNode* initializer, ParseNode* pattern)
+{
+ TDZCheckCache tdzCache(this);
+ return emitInitializer(initializer, pattern);
+}
bool
BytecodeEmitter::emitDestructuringOpsArray(ParseNode* pattern, DestructuringFlavor flav)
@@ -4673,240 +5486,304 @@ BytecodeEmitter::emitDestructuringOpsArray(ParseNode* pattern, DestructuringFlav
// Here's pseudo code for |let [a, b, , c=y, ...d] = x;|
//
+ // Lines that are annotated "covered by trynote" mean that upon throwing
+ // an exception, IteratorClose is called on iter only if done is false.
+ //
// let x, y;
// let a, b, c, d;
- // let tmp, done, iter, result; // stack values
+ // let iter, lref, result, done, value; // stack values
//
// iter = x[Symbol.iterator]();
//
// // ==== emitted by loop for a ====
+ // lref = GetReference(a); // covered by trynote
+ //
// result = iter.next();
// done = result.done;
//
- // if (done) {
- // a = undefined;
+ // if (done)
+ // value = undefined;
+ // else
+ // value = result.value;
//
- // result = undefined;
- // done = true;
- // } else {
- // a = result.value;
- //
- // // Do next element's .next() and .done access here
- // result = iter.next();
- // done = result.done;
- // }
+ // SetOrInitialize(lref, value); // covered by trynote
//
// // ==== emitted by loop for b ====
- // if (done) {
- // b = undefined;
+ // lref = GetReference(b); // covered by trynote
//
- // result = undefined;
- // done = true;
+ // if (done) {
+ // value = undefined;
// } else {
- // b = result.value;
- //
// result = iter.next();
// done = result.done;
+ // if (done)
+ // value = undefined;
+ // else
+ // value = result.value;
// }
//
+ // SetOrInitialize(lref, value); // covered by trynote
+ //
// // ==== emitted by loop for elision ====
// if (done) {
- // result = undefined
- // done = true
+ // value = undefined;
// } else {
- // result.value;
- //
// result = iter.next();
// done = result.done;
+ // if (done)
+ // value = undefined;
+ // else
+ // value = result.value;
// }
//
// // ==== emitted by loop for c ====
+ // lref = GetReference(c); // covered by trynote
+ //
// if (done) {
- // c = y;
+ // value = undefined;
// } else {
- // tmp = result.value;
- // if (tmp === undefined)
- // tmp = y;
- // c = tmp;
- //
- // // Don't do next element's .next() and .done access if
- // // this is the last non-spread element.
+ // result = iter.next();
+ // done = result.done;
+ // if (done)
+ // value = undefined;
+ // else
+ // value = result.value;
// }
//
+ // if (value === undefined)
+ // value = y; // covered by trynote
+ //
+ // SetOrInitialize(lref, value); // covered by trynote
+ //
// // ==== emitted by loop for d ====
- // if (done) {
- // // Assing empty array when completed
- // d = [];
- // } else {
- // d = [...iter];
- // }
+ // lref = GetReference(d); // covered by trynote
+ //
+ // if (done)
+ // value = [];
+ // else
+ // value = [...iter];
+ //
+ // SetOrInitialize(lref, value); // covered by trynote
+ //
+ // // === emitted after loop ===
+ // if (!done)
+ // IteratorClose(iter);
- /*
- * Use an iterator to destructure the RHS, instead of index lookup. We
- * must leave the *original* value on the stack.
- */
+ // Use an iterator to destructure the RHS, instead of index lookup. We
+ // must leave the *original* value on the stack.
if (!emit1(JSOP_DUP)) // ... OBJ OBJ
return false;
- if (!emitIterator()) // ... OBJ? ITER
+ if (!emitIterator()) // ... OBJ ITER
+ return false;
+
+ // For an empty pattern [], call IteratorClose unconditionally. Nothing
+ // else needs to be done.
+ if (!pattern->pn_head)
+ return emitIteratorClose(); // ... OBJ
+
+ // Push an initial FALSE value for DONE.
+ if (!emit1(JSOP_FALSE)) // ... OBJ ITER FALSE
return false;
- bool needToPopIterator = true;
+
+ // JSTRY_DESTRUCTURING_ITERCLOSE expects the iterator and the done value
+ // to be the second to top and the top of the stack, respectively.
+ // IteratorClose is called upon exception only if done is false.
+ int32_t tryNoteDepth = stackDepth;
for (ParseNode* member = pattern->pn_head; member; member = member->pn_next) {
- bool isHead = member == pattern->pn_head;
+ bool isFirst = member == pattern->pn_head;
+ DebugOnly<bool> hasNext = !!member->pn_next;
+
+ size_t emitted = 0;
+
+ // Spec requires LHS reference to be evaluated first.
+ ParseNode* lhsPattern = member;
+ if (lhsPattern->isKind(PNK_ASSIGN))
+ lhsPattern = lhsPattern->pn_left;
+
+ bool isElision = lhsPattern->isKind(PNK_ELISION);
+ if (!isElision) {
+ auto emitLHSRef = [lhsPattern, &emitted](BytecodeEmitter* bce) {
+ return bce->emitDestructuringLHSRef(lhsPattern, &emitted); // ... OBJ ITER DONE *LREF
+ };
+ if (!wrapWithDestructuringIteratorCloseTryNote(tryNoteDepth, emitLHSRef))
+ return false;
+ }
+
+ // Pick the DONE value to the top of the stack.
+ if (emitted) {
+ if (!emit2(JSOP_PICK, emitted)) // ... OBJ ITER *LREF DONE
+ return false;
+ }
+
+ if (isFirst) {
+ // If this element is the first, DONE is always FALSE, so pop it.
+ //
+ // Non-first elements should emit if-else depending on the
+ // member pattern, below.
+ if (!emit1(JSOP_POP)) // ... OBJ ITER *LREF
+ return false;
+ }
+
if (member->isKind(PNK_SPREAD)) {
IfThenElseEmitter ifThenElse(this);
- if (!isHead) {
+ if (!isFirst) {
// If spread is not the first element of the pattern,
// iterator can already be completed.
- if (!ifThenElse.emitIfElse()) // ... OBJ? ITER
+ // ... OBJ ITER *LREF DONE
+ if (!ifThenElse.emitIfElse()) // ... OBJ ITER *LREF
return false;
- if (!emit1(JSOP_POP)) // ... OBJ?
- return false;
- if (!emitUint32Operand(JSOP_NEWARRAY, 0)) // ... OBJ? ARRAY
- return false;
- if (!emitConditionallyExecutedDestructuringLHS(member, flav)) // ... OBJ?
+ if (!emitUint32Operand(JSOP_NEWARRAY, 0)) // ... OBJ ITER *LREF ARRAY
return false;
-
- if (!ifThenElse.emitElse()) // ... OBJ? ITER
+ if (!ifThenElse.emitElse()) // ... OBJ ITER *LREF
return false;
}
// If iterator is not completed, create a new array with the rest
// of the iterator.
- if (!emitUint32Operand(JSOP_NEWARRAY, 0)) // ... OBJ? ITER ARRAY
+ if (!emitDupAt(emitted)) // ... OBJ ITER *LREF ITER
return false;
- if (!emitNumberOp(0)) // ... OBJ? ITER ARRAY INDEX
+ if (!emitUint32Operand(JSOP_NEWARRAY, 0)) // ... OBJ ITER *LREF ITER ARRAY
return false;
- if (!emitSpread()) // ... OBJ? ARRAY INDEX
+ if (!emitNumberOp(0)) // ... OBJ ITER *LREF ITER ARRAY INDEX
return false;
- if (!emit1(JSOP_POP)) // ... OBJ? ARRAY
+ if (!emitSpread()) // ... OBJ ITER *LREF ARRAY INDEX
return false;
- if (!emitConditionallyExecutedDestructuringLHS(member, flav)) // ... OBJ?
+ if (!emit1(JSOP_POP)) // ... OBJ ITER *LREF ARRAY
return false;
- if (!isHead) {
+ if (!isFirst) {
if (!ifThenElse.emitEnd())
return false;
- MOZ_ASSERT(ifThenElse.popped() == 1);
+ MOZ_ASSERT(ifThenElse.pushed() == 1);
}
- needToPopIterator = false;
- MOZ_ASSERT(!member->pn_next);
+
+ // At this point the iterator is done. Unpick a TRUE value for DONE above ITER.
+ if (!emit1(JSOP_TRUE)) // ... OBJ ITER *LREF ARRAY TRUE
+ return false;
+ if (!emit2(JSOP_UNPICK, emitted + 1)) // ... OBJ ITER TRUE *LREF ARRAY
+ return false;
+
+ auto emitAssignment = [member, flav](BytecodeEmitter* bce) {
+ return bce->emitSetOrInitializeDestructuring(member, flav); // ... OBJ ITER TRUE
+ };
+ if (!wrapWithDestructuringIteratorCloseTryNote(tryNoteDepth, emitAssignment))
+ return false;
+
+ MOZ_ASSERT(!hasNext);
break;
}
ParseNode* pndefault = nullptr;
- ParseNode* subpattern = member;
- if (subpattern->isKind(PNK_ASSIGN)) {
- pndefault = subpattern->pn_right;
- subpattern = subpattern->pn_left;
- }
+ if (member->isKind(PNK_ASSIGN))
+ pndefault = member->pn_right;
- bool isElision = subpattern->isKind(PNK_ELISION);
- bool hasNextNonSpread = member->pn_next && !member->pn_next->isKind(PNK_SPREAD);
- bool hasNextSpread = member->pn_next && member->pn_next->isKind(PNK_SPREAD);
+ MOZ_ASSERT(!member->isKind(PNK_SPREAD));
- MOZ_ASSERT(!subpattern->isKind(PNK_SPREAD));
+ IfThenElseEmitter ifAlreadyDone(this);
+ if (!isFirst) {
+ // ... OBJ ITER *LREF DONE
+ if (!ifAlreadyDone.emitIfElse()) // ... OBJ ITER *LREF
+ return false;
- auto emitNext = [pattern](ExclusiveContext* cx, BytecodeEmitter* bce) {
- if (!bce->emit1(JSOP_DUP)) // ... OBJ? ITER ITER
+ if (!emit1(JSOP_UNDEFINED)) // ... OBJ ITER *LREF UNDEF
return false;
- if (!bce->emitIteratorNext(pattern)) // ... OBJ? ITER RESULT
+ if (!emit1(JSOP_NOP_DESTRUCTURING)) // ... OBJ ITER *LREF UNDEF
return false;
- if (!bce->emit1(JSOP_DUP)) // ... OBJ? ITER RESULT RESULT
+
+ // The iterator is done. Unpick a TRUE value for DONE above ITER.
+ if (!emit1(JSOP_TRUE)) // ... OBJ ITER *LREF UNDEF TRUE
return false;
- if (!bce->emitAtomOp(cx->names().done, JSOP_GETPROP)) // ... OBJ? ITER RESULT DONE?
+ if (!emit2(JSOP_UNPICK, emitted + 1)) // ... OBJ ITER TRUE *LREF UNDEF
return false;
- return true;
- };
- if (isHead) {
- if (!emitNext(cx, this)) // ... OBJ? ITER RESULT DONE?
+ if (!ifAlreadyDone.emitElse()) // ... OBJ ITER *LREF
return false;
}
- IfThenElseEmitter ifThenElse(this);
- if (!ifThenElse.emitIfElse()) // ... OBJ? ITER RESULT
- return false;
-
- if (!emit1(JSOP_POP)) // ... OBJ? ITER
- return false;
- if (pndefault) {
- // Emit only pndefault tree here, as undefined check in emitDefault
- // should always be true.
- if (!emitConditionallyExecutedTree(pndefault)) // ... OBJ? ITER VALUE
+ if (emitted) {
+ if (!emitDupAt(emitted)) // ... OBJ ITER *LREF ITER
return false;
} else {
- if (!isElision) {
- if (!emit1(JSOP_UNDEFINED)) // ... OBJ? ITER UNDEFINED
- return false;
- if (!emit1(JSOP_NOP_DESTRUCTURING))
- return false;
- }
- }
- if (!isElision) {
- if (!emitConditionallyExecutedDestructuringLHS(subpattern, flav)) // ... OBJ? ITER
- return false;
- } else if (pndefault) {
- if (!emit1(JSOP_POP)) // ... OBJ? ITER
+ if (!emit1(JSOP_DUP)) // ... OBJ ITER *LREF ITER
return false;
}
+ if (!emitIteratorNext(pattern)) // ... OBJ ITER *LREF RESULT
+ return false;
+ if (!emit1(JSOP_DUP)) // ... OBJ ITER *LREF RESULT RESULT
+ return false;
+ if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ... OBJ ITER *LREF RESULT DONE
+ return false;
- // Setup next element's result when the iterator is done.
- if (hasNextNonSpread) {
- if (!emit1(JSOP_UNDEFINED)) // ... OBJ? ITER RESULT
- return false;
- if (!emit1(JSOP_NOP_DESTRUCTURING))
- return false;
- if (!emit1(JSOP_TRUE)) // ... OBJ? ITER RESULT DONE?
- return false;
- } else if (hasNextSpread) {
- if (!emit1(JSOP_TRUE)) // ... OBJ? ITER DONE?
- return false;
- }
+ if (!emit1(JSOP_DUP)) // ... OBJ ITER *LREF RESULT DONE DONE
+ return false;
+ if (!emit2(JSOP_UNPICK, emitted + 2)) // ... OBJ ITER DONE *LREF RESULT DONE
+ return false;
+
+ IfThenElseEmitter ifDone(this);
+ if (!ifDone.emitIfElse()) // ... OBJ ITER DONE *LREF RESULT
+ return false;
- if (!ifThenElse.emitElse()) // ... OBJ? ITER RESULT
+ if (!emit1(JSOP_POP)) // ... OBJ ITER DONE *LREF
+ return false;
+ if (!emit1(JSOP_UNDEFINED)) // ... OBJ ITER DONE *LREF UNDEF
+ return false;
+ if (!emit1(JSOP_NOP_DESTRUCTURING)) // ... OBJ ITER DONE *LREF UNDEF
return false;
- if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ... OBJ? ITER VALUE
+ if (!ifDone.emitElse()) // ... OBJ ITER DONE *LREF RESULT
return false;
- if (pndefault) {
- if (!emitDefault(pndefault)) // ... OBJ? ITER VALUE
+ if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ... OBJ ITER DONE *LREF VALUE
+ return false;
+
+ if (!ifDone.emitEnd())
+ return false;
+ MOZ_ASSERT(ifDone.pushed() == 0);
+
+ if (!isFirst) {
+ if (!ifAlreadyDone.emitEnd())
return false;
+ MOZ_ASSERT(ifAlreadyDone.pushed() == 2);
}
- if (!isElision) {
- if (!emitConditionallyExecutedDestructuringLHS(subpattern, flav)) // ... OBJ? ITER
- return false;
- } else {
- if (!emit1(JSOP_POP)) // ... OBJ? ITER
+ if (pndefault) {
+ auto emitDefault = [pndefault, lhsPattern](BytecodeEmitter* bce) {
+ return bce->emitDefault(pndefault, lhsPattern); // ... OBJ ITER DONE *LREF VALUE
+ };
+
+ if (!wrapWithDestructuringIteratorCloseTryNote(tryNoteDepth, emitDefault))
return false;
}
- // Setup next element's result when the iterator is not done.
- if (hasNextNonSpread) {
- if (!emitNext(cx, this)) // ... OBJ? ITER RESULT DONE?
+ if (!isElision) {
+ auto emitAssignment = [lhsPattern, flav](BytecodeEmitter* bce) {
+ return bce->emitSetOrInitializeDestructuring(lhsPattern, flav); // ... OBJ ITER DONE
+ };
+
+ if (!wrapWithDestructuringIteratorCloseTryNote(tryNoteDepth, emitAssignment))
return false;
- } else if (hasNextSpread) {
- if (!emit1(JSOP_FALSE)) // ... OBJ? ITER DONE?
+ } else {
+ if (!emit1(JSOP_POP)) // ... OBJ ITER DONE
return false;
}
-
- if (!ifThenElse.emitEnd())
- return false;
- if (hasNextNonSpread)
- MOZ_ASSERT(ifThenElse.pushed() == 1);
- else if (hasNextSpread)
- MOZ_ASSERT(ifThenElse.pushed() == 0);
- else
- MOZ_ASSERT(ifThenElse.popped() == 1);
}
- if (needToPopIterator) {
- if (!emit1(JSOP_POP)) // ... OBJ?
- return false;
- }
+ // The last DONE value is on top of the stack. If not DONE, call
+ // IteratorClose.
+ // ... OBJ ITER DONE
+ IfThenElseEmitter ifDone(this);
+ if (!ifDone.emitIfElse()) // ... OBJ ITER
+ return false;
+ if (!emit1(JSOP_POP)) // ... OBJ
+ return false;
+ if (!ifDone.emitElse()) // ... OBJ ITER
+ return false;
+ if (!emitIteratorClose()) // ... OBJ
+ return false;
+ if (!ifDone.emitEnd())
+ return false;
return true;
}
@@ -4930,27 +5807,43 @@ BytecodeEmitter::emitDestructuringOpsObject(ParseNode* pattern, DestructuringFla
return false;
for (ParseNode* member = pattern->pn_head; member; member = member->pn_next) {
- // Duplicate the value being destructured to use as a reference base.
- if (!emit1(JSOP_DUP)) // ... RHS RHS
+ ParseNode* subpattern;
+ if (member->isKind(PNK_MUTATEPROTO))
+ subpattern = member->pn_kid;
+ else
+ subpattern = member->pn_right;
+ ParseNode* lhs = subpattern;
+ if (lhs->isKind(PNK_ASSIGN))
+ lhs = lhs->pn_left;
+
+ size_t emitted;
+ if (!emitDestructuringLHSRef(lhs, &emitted)) // ... RHS *LREF
return false;
+ // Duplicate the value being destructured to use as a reference base.
+ if (emitted) {
+ if (!emitDupAt(emitted)) // ... RHS *LREF RHS
+ return false;
+ } else {
+ if (!emit1(JSOP_DUP)) // ... RHS RHS
+ return false;
+ }
+
// Now push the property name currently being matched, which is the
// current property name "label" on the left of a colon in the object
// initialiser.
bool needsGetElem = true;
- ParseNode* subpattern;
if (member->isKind(PNK_MUTATEPROTO)) {
- if (!emitAtomOp(cx->names().proto, JSOP_GETPROP)) // ... RHS PROP
+ if (!emitAtomOp(cx->names().proto, JSOP_GETPROP)) // ... RHS *LREF PROP
return false;
needsGetElem = false;
- subpattern = member->pn_kid;
} else {
MOZ_ASSERT(member->isKind(PNK_COLON) || member->isKind(PNK_SHORTHAND));
ParseNode* key = member->pn_left;
if (key->isKind(PNK_NUMBER)) {
- if (!emitNumberOp(key->pn_dval)) // ... RHS RHS KEY
+ if (!emitNumberOp(key->pn_dval)) // ... RHS *LREF RHS KEY
return false;
} else if (key->isKind(PNK_OBJECT_PROPERTY_NAME) || key->isKind(PNK_STRING)) {
PropertyName* name = key->pn_atom->asPropertyName();
@@ -4960,33 +5853,30 @@ BytecodeEmitter::emitDestructuringOpsObject(ParseNode* pattern, DestructuringFla
// as indexes for simplification of downstream analysis.
jsid id = NameToId(name);
if (id != IdToTypeId(id)) {
- if (!emitTree(key)) // ... RHS RHS KEY
+ if (!emitTree(key)) // ... RHS *LREF RHS KEY
return false;
} else {
- if (!emitAtomOp(name, JSOP_GETPROP)) // ...RHS PROP
+ if (!emitAtomOp(name, JSOP_GETPROP)) // ... RHS *LREF PROP
return false;
needsGetElem = false;
}
} else {
- if (!emitComputedPropertyName(key)) // ... RHS RHS KEY
+ if (!emitComputedPropertyName(key)) // ... RHS *LREF RHS KEY
return false;
}
-
- subpattern = member->pn_right;
}
// Get the property value if not done already.
- if (needsGetElem && !emitElemOpBase(JSOP_GETELEM)) // ... RHS PROP
+ if (needsGetElem && !emitElemOpBase(JSOP_GETELEM)) // ... RHS *LREF PROP
return false;
if (subpattern->isKind(PNK_ASSIGN)) {
- if (!emitDefault(subpattern->pn_right))
+ if (!emitDefault(subpattern->pn_right, lhs)) // ... RHS *LREF VALUE
return false;
- subpattern = subpattern->pn_left;
}
- // Destructure PROP per this member's subpattern.
- if (!emitDestructuringLHS(subpattern, flav))
+ // Destructure PROP per this member's lhs.
+ if (!emitSetOrInitializeDestructuring(subpattern, flav)) // ... RHS
return false;
}
@@ -5094,7 +5984,7 @@ BytecodeEmitter::emitSingleDeclaration(ParseNode* declList, ParseNode* decl,
if (!initializer && declList->isKind(PNK_VAR))
return true;
- auto emitRhs = [initializer, declList](BytecodeEmitter* bce, const NameLocation&, bool) {
+ auto emitRhs = [initializer, declList, decl](BytecodeEmitter* bce, const NameLocation&, bool) {
if (!initializer) {
// Lexical declarations are initialized to undefined without an
// initializer.
@@ -5105,7 +5995,7 @@ BytecodeEmitter::emitSingleDeclaration(ParseNode* declList, ParseNode* decl,
}
MOZ_ASSERT(initializer);
- return bce->emitTree(initializer);
+ return bce->emitInitializer(initializer, decl);
};
if (!emitInitializeName(decl, emitRhs))
@@ -5164,6 +6054,12 @@ BytecodeEmitter::emitAssignment(ParseNode* lhs, JSOp op, ParseNode* rhs)
if (!EmitAssignmentRhs(bce, rhs, emittedBindOp ? 2 : 1))
return false;
+ if (!lhs->isInParens() && op == JSOP_NOP && rhs && rhs->isDirectRHSAnonFunction()) {
+ RootedAtom name(bce->cx, lhs->name());
+ if (!bce->setOrEmitSetFunName(rhs, name, FunctionPrefixKind::None))
+ return false;
+ }
+
// Emit the compound assignment op if there is one.
if (op != JSOP_NOP && !bce->emit1(op))
return false;
@@ -5558,7 +6454,7 @@ BytecodeEmitter::emitCatch(ParseNode* pn)
return false;
{
- NonLocalExitControl nle(this);
+ NonLocalExitControl nle(this, NonLocalExitControl::Throw);
// Move exception back to cx->exception to prepare for
// the next catch.
@@ -5592,57 +6488,28 @@ BytecodeEmitter::emitCatch(ParseNode* pn)
MOZ_NEVER_INLINE bool
BytecodeEmitter::emitTry(ParseNode* pn)
{
- // Track jumps-over-catches and gosubs-to-finally for later fixup.
- //
- // When a finally block is active, non-local jumps (including
- // jumps-over-catches) result in a GOSUB being written into the bytecode
- // stream and fixed-up later.
- //
- TryFinallyControl controlInfo(this, pn->pn_kid3 ? StatementKind::Finally : StatementKind::Try);
-
- // Since an exception can be thrown at any place inside the try block,
- // we need to restore the stack and the scope chain before we transfer
- // the control to the exception handler.
- //
- // For that we store in a try note associated with the catch or
- // finally block the stack depth upon the try entry. The interpreter
- // uses this depth to properly unwind the stack and the scope chain.
- //
- int depth = stackDepth;
-
- // Record the try location, then emit the try block.
- unsigned noteIndex;
- if (!newSrcNote(SRC_TRY, &noteIndex))
- return false;
- if (!emit1(JSOP_TRY))
- return false;
-
- ptrdiff_t tryStart = offset();
- if (!emitTree(pn->pn_kid1))
- return false;
- MOZ_ASSERT(depth == stackDepth);
+ ParseNode* catchList = pn->pn_kid2;
+ ParseNode* finallyNode = pn->pn_kid3;
- // GOSUB to finally, if present.
- if (pn->pn_kid3) {
- if (!emitJump(JSOP_GOSUB, &controlInfo.gosubs))
- return false;
+ TryEmitter::Kind kind;
+ if (catchList) {
+ if (finallyNode)
+ kind = TryEmitter::TryCatchFinally;
+ else
+ kind = TryEmitter::TryCatch;
+ } else {
+ MOZ_ASSERT(finallyNode);
+ kind = TryEmitter::TryFinally;
}
+ TryEmitter tryCatch(this, kind);
- // Source note points to the jump at the end of the try block.
- if (!setSrcNoteOffset(noteIndex, 0, offset() - tryStart + JSOP_TRY_LENGTH))
- return false;
-
- // Emit jump over catch and/or finally.
- JumpList catchJump;
- if (!emitJump(JSOP_GOTO, &catchJump))
+ if (!tryCatch.emitTry())
return false;
- JumpTarget tryEnd;
- if (!emitJumpTarget(&tryEnd))
+ if (!emitTree(pn->pn_kid1))
return false;
// If this try has a catch block, emit it.
- ParseNode* catchList = pn->pn_kid2;
if (catchList) {
MOZ_ASSERT(catchList->isKind(PNK_CATCHLIST));
@@ -5672,110 +6539,26 @@ BytecodeEmitter::emitTry(ParseNode* pn)
// capturing exceptions thrown from catch{} blocks.
//
for (ParseNode* pn3 = catchList->pn_head; pn3; pn3 = pn3->pn_next) {
- MOZ_ASSERT(this->stackDepth == depth);
-
- // Clear the frame's return value that might have been set by the
- // try block:
- //
- // eval("try { 1; throw 2 } catch(e) {}"); // undefined, not 1
- if (!emit1(JSOP_UNDEFINED))
- return false;
- if (!emit1(JSOP_SETRVAL))
+ if (!tryCatch.emitCatch())
return false;
// Emit the lexical scope and catch body.
MOZ_ASSERT(pn3->isKind(PNK_LEXICALSCOPE));
if (!emitTree(pn3))
return false;
-
- // gosub <finally>, if required.
- if (pn->pn_kid3) {
- if (!emitJump(JSOP_GOSUB, &controlInfo.gosubs))
- return false;
- MOZ_ASSERT(this->stackDepth == depth);
- }
-
- // Jump over the remaining catch blocks. This will get fixed
- // up to jump to after catch/finally.
- if (!emitJump(JSOP_GOTO, &catchJump))
- return false;
-
- // If this catch block had a guard clause, patch the guard jump to
- // come here.
- if (controlInfo.guardJump.offset != -1) {
- if (!emitJumpTargetAndPatch(controlInfo.guardJump))
- return false;
- controlInfo.guardJump.offset = -1;
-
- // If this catch block is the last one, rethrow, delegating
- // execution of any finally block to the exception handler.
- if (!pn3->pn_next) {
- if (!emit1(JSOP_EXCEPTION))
- return false;
- if (!emit1(JSOP_THROW))
- return false;
- }
- }
}
}
- MOZ_ASSERT(this->stackDepth == depth);
-
// Emit the finally handler, if there is one.
- JumpTarget finallyStart{ 0 };
- if (pn->pn_kid3) {
- if (!emitJumpTarget(&finallyStart))
+ if (finallyNode) {
+ if (!tryCatch.emitFinally(Some(finallyNode->pn_pos.begin)))
return false;
- // Fix up the gosubs that might have been emitted before non-local
- // jumps to the finally code.
- patchJumpsToTarget(controlInfo.gosubs, finallyStart);
-
- // Indicate that we're emitting a subroutine body.
- controlInfo.setEmittingSubroutine();
- if (!updateSourceCoordNotes(pn->pn_kid3->pn_pos.begin))
- return false;
- if (!emit1(JSOP_FINALLY))
+ if (!emitTree(finallyNode))
return false;
- if (!emit1(JSOP_GETRVAL))
- return false;
-
- // Clear the frame's return value to make break/continue return
- // correct value even if there's no other statement before them:
- //
- // eval("x: try { 1 } finally { break x; }"); // undefined, not 1
- if (!emit1(JSOP_UNDEFINED))
- return false;
- if (!emit1(JSOP_SETRVAL))
- return false;
-
- if (!emitTree(pn->pn_kid3))
- return false;
- if (!emit1(JSOP_SETRVAL))
- return false;
- if (!emit1(JSOP_RETSUB))
- return false;
- hasTryFinally = true;
- MOZ_ASSERT(this->stackDepth == depth);
}
- // ReconstructPCStack needs a NOP here to mark the end of the last catch block.
- if (!emit1(JSOP_NOP))
- return false;
-
- // Fix up the end-of-try/catch jumps to come here.
- if (!emitJumpTargetAndPatch(catchJump))
- return false;
-
- // Add the try note last, to let post-order give us the right ordering
- // (first to last for a given nesting level, inner to outer by level).
- if (catchList && !tryNoteList.append(JSTRY_CATCH, depth, tryStart, tryEnd.offset))
- return false;
-
- // If we've got a finally, mark try+catch region with additional
- // trynote to catch exceptions (re)thrown from a catch block or
- // for the try{}finally{} case.
- if (pn->pn_kid3 && !tryNoteList.append(JSTRY_FINALLY, depth, tryStart, finallyStart.offset))
+ if (!tryCatch.emitEnd())
return false;
return true;
@@ -5788,7 +6571,7 @@ BytecodeEmitter::emitIf(ParseNode* pn)
if_again:
/* Emit code for the condition before pushing stmtInfo. */
- if (!emitConditionallyExecutedTree(pn->pn_kid1))
+ if (!emitTreeInBranch(pn->pn_kid1))
return false;
ParseNode* elseNode = pn->pn_kid3;
@@ -5801,7 +6584,7 @@ BytecodeEmitter::emitIf(ParseNode* pn)
}
/* Emit code for the then part. */
- if (!emitConditionallyExecutedTree(pn->pn_kid2))
+ if (!emitTreeInBranch(pn->pn_kid2))
return false;
if (elseNode) {
@@ -5814,7 +6597,7 @@ BytecodeEmitter::emitIf(ParseNode* pn)
}
/* Emit code for the else part. */
- if (!emitConditionallyExecutedTree(elseNode))
+ if (!emitTreeInBranch(elseNode))
return false;
}
@@ -6048,7 +6831,7 @@ BytecodeEmitter::emitSpread(bool allowSelfHosted)
return false;
if (!emit1(JSOP_DUP)) // ITER ARR I RESULT RESULT
return false;
- if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER ARR I RESULT DONE?
+ if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER ARR I RESULT DONE
return false;
if (!emitBackwardJump(JSOP_IFEQ, top, &beq, &breakTarget)) // ITER ARR I RESULT
@@ -6144,19 +6927,34 @@ BytecodeEmitter::emitForOf(ParseNode* forOfLoop, EmitterScope* headLexicalEmitte
MOZ_ASSERT(forOfHead->isKind(PNK_FOROF));
MOZ_ASSERT(forOfHead->isArity(PN_TERNARY));
- // Evaluate the expression being iterated.
ParseNode* forHeadExpr = forOfHead->pn_kid3;
+
+ // Certain builtins (e.g. Array.from) are implemented in self-hosting
+ // as for-of loops.
+ bool allowSelfHostedIter = false;
+ if (emitterMode == BytecodeEmitter::SelfHosting &&
+ forHeadExpr->isKind(PNK_CALL) &&
+ forHeadExpr->pn_head->name() == cx->names().allowContentIter)
+ {
+ allowSelfHostedIter = true;
+ }
+
+ // Evaluate the expression being iterated.
if (!emitTree(forHeadExpr)) // ITERABLE
return false;
if (!emitIterator()) // ITER
return false;
- // For-of loops have both the iterator and the value on the stack. Push
- // undefined to balance the stack.
+ int32_t iterDepth = stackDepth;
+
+ // For-of loops have both the iterator, the result, and the result.value
+ // on the stack. Push undefineds to balance the stack.
if (!emit1(JSOP_UNDEFINED)) // ITER RESULT
return false;
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT UNDEF
+ return false;
- LoopControl loopInfo(this, StatementKind::ForOfLoop);
+ ForOfLoopControl loopInfo(this, iterDepth, allowSelfHostedIter);
// Annotate so IonMonkey can find the loop-closing jump.
unsigned noteIndex;
@@ -6164,11 +6962,11 @@ BytecodeEmitter::emitForOf(ParseNode* forOfLoop, EmitterScope* headLexicalEmitte
return false;
JumpList initialJump;
- if (!emitJump(JSOP_GOTO, &initialJump)) // ITER RESULT
+ if (!emitJump(JSOP_GOTO, &initialJump)) // ITER RESULT UNDEF
return false;
JumpTarget top{ -1 };
- if (!emitLoopHead(nullptr, &top)) // ITER RESULT
+ if (!emitLoopHead(nullptr, &top)) // ITER RESULT UNDEF
return false;
// If the loop had an escaping lexical declaration, replace the current
@@ -6185,7 +6983,7 @@ BytecodeEmitter::emitForOf(ParseNode* forOfLoop, EmitterScope* headLexicalEmitte
MOZ_ASSERT(headLexicalEmitterScope->scope(this)->kind() == ScopeKind::Lexical);
if (headLexicalEmitterScope->hasEnvironment()) {
- if (!emit1(JSOP_RECREATELEXICALENV)) // ITER RESULT
+ if (!emit1(JSOP_RECREATELEXICALENV)) // ITER RESULT UNDEF
return false;
}
@@ -6202,46 +7000,69 @@ BytecodeEmitter::emitForOf(ParseNode* forOfLoop, EmitterScope* headLexicalEmitte
#endif
// Emit code to assign result.value to the iteration variable.
+ //
+ // Note that ES 13.7.5.13, step 5.c says getting result.value does not
+ // call IteratorClose, so start JSTRY_ITERCLOSE after the GETPROP.
+ if (!emit1(JSOP_POP)) // ITER RESULT
+ return false;
if (!emit1(JSOP_DUP)) // ITER RESULT RESULT
return false;
if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ITER RESULT VALUE
return false;
- if (!emitInitializeForInOrOfTarget(forOfHead)) // ITER RESULT VALUE
+ if (!loopInfo.emitBeginCodeNeedingIteratorClose(this))
return false;
- if (!emit1(JSOP_POP)) // ITER RESULT
+ if (!emitInitializeForInOrOfTarget(forOfHead)) // ITER RESULT VALUE
return false;
- MOZ_ASSERT(this->stackDepth == loopDepth,
+ MOZ_ASSERT(stackDepth == loopDepth,
"the stack must be balanced around the initializing "
"operation");
+ // Remove VALUE from the stack to release it.
+ if (!emit1(JSOP_POP)) // ITER RESULT
+ return false;
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT UNDEF
+ return false;
+
// Perform the loop body.
ParseNode* forBody = forOfLoop->pn_right;
- if (!emitTree(forBody)) // ITER RESULT
+ if (!emitTree(forBody)) // ITER RESULT UNDEF
+ return false;
+
+ MOZ_ASSERT(stackDepth == loopDepth,
+ "the stack must be balanced around the for-of body");
+
+ if (!loopInfo.emitEndCodeNeedingIteratorClose(this))
return false;
// Set offset for continues.
loopInfo.continueTarget = { offset() };
- if (!emitLoopEntry(forHeadExpr, initialJump)) // ITER RESULT
+ if (!emitLoopEntry(forHeadExpr, initialJump)) // ITER RESULT UNDEF
return false;
- if (!emit1(JSOP_POP)) // ITER
+ if (!emit1(JSOP_SWAP)) // ITER UNDEF RESULT
+ return false;
+ if (!emit1(JSOP_POP)) // ITER UNDEF
return false;
- if (!emit1(JSOP_DUP)) // ITER ITER
+ if (!emitDupAt(1)) // ITER UNDEF ITER
return false;
- if (!emitIteratorNext(forOfHead)) // ITER RESULT
+ if (!emitIteratorNext(forOfHead, allowSelfHostedIter)) // ITER UNDEF RESULT
return false;
- if (!emit1(JSOP_DUP)) // ITER RESULT RESULT
+
+ if (!emit1(JSOP_SWAP)) // ITER RESULT UNDEF
return false;
- if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER RESULT DONE?
+
+ if (!emitDupAt(1)) // ITER RESULT UNDEF RESULT
+ return false;
+ if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER RESULT UNDEF DONE
return false;
if (!emitBackwardJump(JSOP_IFEQ, top, &beq, &breakTarget))
- return false; // ITER RESULT
+ return false; // ITER RESULT UNDEF
MOZ_ASSERT(this->stackDepth == loopDepth);
}
@@ -6256,7 +7077,7 @@ BytecodeEmitter::emitForOf(ParseNode* forOfLoop, EmitterScope* headLexicalEmitte
if (!tryNoteList.append(JSTRY_FOR_OF, stackDepth, top.offset, breakTarget.offset))
return false;
- return emitUint16Operand(JSOP_POPN, 2); //
+ return emitUint16Operand(JSOP_POPN, 3); //
}
bool
@@ -6283,8 +7104,8 @@ BytecodeEmitter::emitForIn(ParseNode* forInLoop, EmitterScope* headLexicalEmitte
if (!updateSourceCoordNotes(decl->pn_pos.begin))
return false;
- auto emitRhs = [initializer](BytecodeEmitter* bce, const NameLocation&, bool) {
- return bce->emitTree(initializer);
+ auto emitRhs = [decl, initializer](BytecodeEmitter* bce, const NameLocation&, bool) {
+ return bce->emitInitializer(initializer, decl);
};
if (!emitInitializeName(decl, emitRhs))
@@ -6504,7 +7325,7 @@ BytecodeEmitter::emitCStyleFor(ParseNode* pn, EmitterScope* headLexicalEmitterSc
if (jmp.offset == -1 && !emitLoopEntry(forBody, jmp))
return false;
- if (!emitConditionallyExecutedTree(forBody))
+ if (!emitTreeInBranch(forBody))
return false;
// Set loop and enclosing "update" offsets, for continue. Note that we
@@ -6666,6 +7487,8 @@ BytecodeEmitter::emitComprehensionForOf(ParseNode* pn)
// Push a dummy result so that we properly enter iteration midstream.
if (!emit1(JSOP_UNDEFINED)) // ITER RESULT
return false;
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT VALUE
+ return false;
// Enter the block before the loop body, after evaluating the obj.
// Initialize let bindings with undefined when entering, as the name
@@ -6703,42 +7526,59 @@ BytecodeEmitter::emitComprehensionForOf(ParseNode* pn)
#endif
// Emit code to assign result.value to the iteration variable.
+ if (!emit1(JSOP_POP)) // ITER RESULT
+ return false;
if (!emit1(JSOP_DUP)) // ITER RESULT RESULT
return false;
if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ITER RESULT VALUE
return false;
+
+ // Notice: Comprehension for-of doesn't perform IteratorClose, since it's
+ // not in the spec.
+
if (!emitAssignment(loopVariableName, JSOP_NOP, nullptr)) // ITER RESULT VALUE
return false;
+
+ // Remove VALUE from the stack to release it.
if (!emit1(JSOP_POP)) // ITER RESULT
return false;
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT UNDEF
+ return false;
// The stack should be balanced around the assignment opcode sequence.
MOZ_ASSERT(this->stackDepth == loopDepth);
// Emit code for the loop body.
- if (!emitTree(forBody))
+ if (!emitTree(forBody)) // ITER RESULT UNDEF
return false;
+ // The stack should be balanced around the assignment opcode sequence.
+ MOZ_ASSERT(this->stackDepth == loopDepth);
+
// Set offset for continues.
loopInfo.continueTarget = { offset() };
if (!emitLoopEntry(forHeadExpr, jmp))
return false;
- if (!emit1(JSOP_POP)) // ITER
+ if (!emit1(JSOP_SWAP)) // ITER UNDEF RESULT
return false;
- if (!emit1(JSOP_DUP)) // ITER ITER
+ if (!emit1(JSOP_POP)) // ITER UNDEF
return false;
- if (!emitIteratorNext(forHead)) // ITER RESULT
+ if (!emitDupAt(1)) // ITER UNDEF ITER
return false;
- if (!emit1(JSOP_DUP)) // ITER RESULT RESULT
+ if (!emitIteratorNext(forHead)) // ITER UNDEF RESULT
+ return false;
+ if (!emit1(JSOP_SWAP)) // ITER RESULT UNDEF
return false;
- if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER RESULT DONE?
+ if (!emitDupAt(1)) // ITER RESULT UNDEF RESULT
+ return false;
+ if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER RESULT UNDEF DONE
return false;
JumpList beq;
JumpTarget breakTarget{ -1 };
- if (!emitBackwardJump(JSOP_IFEQ, top, &beq, &breakTarget)) // ITER RESULT
+ if (!emitBackwardJump(JSOP_IFEQ, top, &beq, &breakTarget)) // ITER RESULT UNDEF
return false;
MOZ_ASSERT(this->stackDepth == loopDepth);
@@ -6760,7 +7600,7 @@ BytecodeEmitter::emitComprehensionForOf(ParseNode* pn)
}
// Pop the result and the iter.
- return emitUint16Operand(JSOP_POPN, 2); //
+ return emitUint16Operand(JSOP_POPN, 3); //
}
bool
@@ -6903,16 +7743,15 @@ BytecodeEmitter::emitFunction(ParseNode* pn, bool needsProto)
{
FunctionBox* funbox = pn->pn_funbox;
RootedFunction fun(cx, funbox->function());
- RootedAtom name(cx, fun->name());
+ RootedAtom name(cx, fun->explicitName());
MOZ_ASSERT_IF(fun->isInterpretedLazy(), fun->lazyScript());
- MOZ_ASSERT_IF(pn->isOp(JSOP_FUNWITHPROTO), needsProto);
/*
* Set the |wasEmitted| flag in the funbox once the function has been
* emitted. Function definitions that need hoisting to the top of the
* function will be seen by emitFunction in two places.
*/
- if (funbox->wasEmitted && pn->functionIsHoisted()) {
+ if (funbox->wasEmitted) {
// Annex B block-scoped functions are hoisted like any other
// block-scoped function to the top of their scope. When their
// definitions are seen for the second time, we need to emit the
@@ -7041,7 +7880,7 @@ BytecodeEmitter::emitFunction(ParseNode* pn, bool needsProto)
}
if (needsProto) {
- MOZ_ASSERT(pn->getOp() == JSOP_FUNWITHPROTO || pn->getOp() == JSOP_LAMBDA);
+ MOZ_ASSERT(pn->getOp() == JSOP_LAMBDA);
pn->setOp(JSOP_FUNWITHPROTO);
}
@@ -7284,7 +8123,7 @@ BytecodeEmitter::emitWhile(ParseNode* pn)
if (!emitLoopHead(pn->pn_right, &top))
return false;
- if (!emitConditionallyExecutedTree(pn->pn_right))
+ if (!emitTreeInBranch(pn->pn_right))
return false;
if (!emitLoopEntry(pn->pn_left, jmp))
@@ -7458,7 +8297,7 @@ BytecodeEmitter::emitReturn(ParseNode* pn)
return false;
}
- NonLocalExitControl nle(this);
+ NonLocalExitControl nle(this, NonLocalExitControl::Return);
if (!nle.prepareForNonLocalJumpToOutermost())
return false;
@@ -7528,110 +8367,208 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter, ParseNode* gen)
MOZ_ASSERT(sc->isFunctionBox());
MOZ_ASSERT(sc->asFunctionBox()->isStarGenerator());
- if (!emitTree(iter)) // ITERABLE
+ if (!emitTree(iter)) // ITERABLE
return false;
- if (!emitIterator()) // ITER
+ if (!emitIterator()) // ITER
return false;
// Initial send value is undefined.
- if (!emit1(JSOP_UNDEFINED)) // ITER RECEIVED
+ if (!emit1(JSOP_UNDEFINED)) // ITER RECEIVED
return false;
- int depth = stackDepth;
- MOZ_ASSERT(depth >= 2);
+ int32_t savedDepthTemp;
+ int32_t startDepth = stackDepth;
+ MOZ_ASSERT(startDepth >= 2);
- JumpList send;
- if (!emitJump(JSOP_GOTO, &send)) // goto send
+ TryEmitter tryCatch(this, TryEmitter::TryCatchFinally, TryEmitter::DontUseRetVal,
+ TryEmitter::DontUseControl);
+ if (!tryCatch.emitJumpOverCatchAndFinally()) // ITER RESULT
return false;
- // Try prologue. // ITER RESULT
- unsigned noteIndex;
- if (!newSrcNote(SRC_TRY, &noteIndex))
- return false;
JumpTarget tryStart{ offset() };
- if (!emit1(JSOP_TRY)) // tryStart:
+ if (!tryCatch.emitTry()) // ITER RESULT
return false;
- MOZ_ASSERT(this->stackDepth == depth);
+
+ MOZ_ASSERT(this->stackDepth == startDepth);
// Load the generator object.
- if (!emitTree(gen)) // ITER RESULT GENOBJ
+ if (!emitTree(gen)) // ITER RESULT GENOBJ
return false;
// Yield RESULT as-is, without re-boxing.
- if (!emitYieldOp(JSOP_YIELD)) // ITER RECEIVED
+ if (!emitYieldOp(JSOP_YIELD)) // ITER RECEIVED
return false;
- // Try epilogue.
- if (!setSrcNoteOffset(noteIndex, 0, offset() - tryStart.offset))
- return false;
- if (!emitJump(JSOP_GOTO, &send)) // goto send
+ if (!tryCatch.emitCatch()) // ITER RESULT
return false;
- JumpTarget tryEnd;
- if (!emitJumpTarget(&tryEnd)) // tryEnd:
+ stackDepth = startDepth; // ITER RESULT
+ if (!emit1(JSOP_EXCEPTION)) // ITER RESULT EXCEPTION
+ return false;
+ if (!emitDupAt(2)) // ITER RESULT EXCEPTION ITER
+ return false;
+ if (!emit1(JSOP_DUP)) // ITER RESULT EXCEPTION ITER ITER
+ return false;
+ if (!emitAtomOp(cx->names().throw_, JSOP_CALLPROP)) // ITER RESULT EXCEPTION ITER THROW
+ return false;
+ if (!emit1(JSOP_DUP)) // ITER RESULT EXCEPTION ITER THROW THROW
+ return false;
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT EXCEPTION ITER THROW THROW UNDEFINED
+ return false;
+ if (!emit1(JSOP_EQ)) // ITER RESULT EXCEPTION ITER THROW ?EQL
return false;
- // Catch location.
- stackDepth = uint32_t(depth); // ITER RESULT
- if (!emit1(JSOP_POP)) // ITER
+ IfThenElseEmitter ifThrowMethodIsNotDefined(this);
+ if (!ifThrowMethodIsNotDefined.emitIf()) // ITER RESULT EXCEPTION ITER THROW
+ return false;
+ savedDepthTemp = stackDepth;
+ if (!emit1(JSOP_POP)) // ITER RESULT EXCEPTION ITER
+ return false;
+ // ES 14.4.13, YieldExpression : yield * AssignmentExpression, step 5.b.iii.2
+ //
+ // If the iterator does not have a "throw" method, it calls IteratorClose
+ // and then throws a TypeError.
+ if (!emitIteratorClose()) // ITER RESULT EXCEPTION
+ return false;
+ if (!emitUint16Operand(JSOP_THROWMSG, JSMSG_ITERATOR_NO_THROW)) // throw
return false;
- // THROW? = 'throw' in ITER
- if (!emit1(JSOP_EXCEPTION)) // ITER EXCEPTION
+ stackDepth = savedDepthTemp;
+ if (!ifThrowMethodIsNotDefined.emitEnd()) // ITER OLDRESULT EXCEPTION ITER THROW
return false;
- if (!emit1(JSOP_SWAP)) // EXCEPTION ITER
+ // ES 14.4.13, YieldExpression : yield * AssignmentExpression, step 5.b.iii.4.
+ // RESULT = ITER.throw(EXCEPTION) // ITER OLDRESULT EXCEPTION ITER THROW
+ if (!emit1(JSOP_SWAP)) // ITER OLDRESULT EXCEPTION THROW ITER
return false;
- if (!emit1(JSOP_DUP)) // EXCEPTION ITER ITER
+ if (!emit2(JSOP_PICK, 2)) // ITER OLDRESULT THROW ITER EXCEPTION
return false;
- if (!emitAtomOp(cx->names().throw_, JSOP_STRING)) // EXCEPTION ITER ITER "throw"
+ if (!emitCall(JSOP_CALL, 1, iter)) // ITER OLDRESULT RESULT
+ return false;
+ checkTypeSet(JSOP_CALL);
+ if (!emitCheckIsObj(CheckIsObjectKind::IteratorThrow)) // ITER OLDRESULT RESULT
return false;
- if (!emit1(JSOP_SWAP)) // EXCEPTION ITER "throw" ITER
+ if (!emit1(JSOP_SWAP)) // ITER RESULT OLDRESULT
return false;
- if (!emit1(JSOP_IN)) // EXCEPTION ITER THROW?
+ if (!emit1(JSOP_POP)) // ITER RESULT
return false;
- // if (THROW?) goto delegate
- JumpList checkThrow;
- if (!emitJump(JSOP_IFNE, &checkThrow)) // EXCEPTION ITER
+ MOZ_ASSERT(this->stackDepth == startDepth);
+ JumpList checkResult;
+ // ES 14.4.13, YieldExpression : yield * AssignmentExpression, step 5.b.ii.
+ //
+ // Note that there is no GOSUB to the finally block here. If the iterator has a
+ // "throw" method, it does not perform IteratorClose.
+ if (!emitJump(JSOP_GOTO, &checkResult)) // goto checkResult
return false;
- if (!emit1(JSOP_POP)) // EXCEPTION
+
+ if (!tryCatch.emitFinally())
+ return false;
+
+ // ES 14.4.13, yield * AssignmentExpression, step 5.c
+ //
+ // Call iterator.return() for receiving a "forced return" completion from
+ // the generator.
+
+ IfThenElseEmitter ifGeneratorClosing(this);
+ if (!emit1(JSOP_ISGENCLOSING)) // ITER RESULT FTYPE FVALUE CLOSING
return false;
- if (!emit1(JSOP_THROW)) // throw EXCEPTION
+ if (!ifGeneratorClosing.emitIf()) // ITER RESULT FTYPE FVALUE
return false;
- if (!emitJumpTargetAndPatch(checkThrow)) // delegate:
+ // Step ii.
+ //
+ // Get the "return" method.
+ if (!emitDupAt(3)) // ITER RESULT FTYPE FVALUE ITER
return false;
- // RESULT = ITER.throw(EXCEPTION) // EXCEPTION ITER
- stackDepth = uint32_t(depth);
- if (!emit1(JSOP_DUP)) // EXCEPTION ITER ITER
+ if (!emit1(JSOP_DUP)) // ITER RESULT FTYPE FVALUE ITER ITER
return false;
- if (!emit1(JSOP_DUP)) // EXCEPTION ITER ITER ITER
+ if (!emitAtomOp(cx->names().return_, JSOP_CALLPROP)) // ITER RESULT FTYPE FVALUE ITER RET
return false;
- if (!emitAtomOp(cx->names().throw_, JSOP_CALLPROP)) // EXCEPTION ITER ITER THROW
+
+ // Step iii.
+ //
+ // Do nothing if "return" is undefined.
+ IfThenElseEmitter ifReturnMethodIsDefined(this);
+ if (!emit1(JSOP_DUP)) // ITER RESULT FTYPE FVALUE ITER RET RET
return false;
- if (!emit1(JSOP_SWAP)) // EXCEPTION ITER THROW ITER
+ if (!emit1(JSOP_UNDEFINED)) // ITER RESULT FTYPE FVALUE ITER RET RET UNDEFINED
return false;
- if (!emit2(JSOP_PICK, 3)) // ITER THROW ITER EXCEPTION
+ if (!emit1(JSOP_NE)) // ITER RESULT FTYPE FVALUE ITER RET ?NEQL
return false;
- if (!emitCall(JSOP_CALL, 1, iter)) // ITER RESULT
+
+ // Step iv.
+ //
+ // Call "return" with the argument passed to Generator.prototype.return,
+ // which is currently in rval.value.
+ if (!ifReturnMethodIsDefined.emitIfElse()) // ITER OLDRESULT FTYPE FVALUE ITER RET
+ return false;
+ if (!emit1(JSOP_SWAP)) // ITER OLDRESULT FTYPE FVALUE RET ITER
+ return false;
+ if (!emit1(JSOP_GETRVAL)) // ITER OLDRESULT FTYPE FVALUE RET ITER RVAL
+ return false;
+ if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ITER OLDRESULT FTYPE FVALUE RET ITER VALUE
+ return false;
+ if (!emitCall(JSOP_CALL, 1)) // ITER OLDRESULT FTYPE FVALUE RESULT
return false;
checkTypeSet(JSOP_CALL);
- MOZ_ASSERT(this->stackDepth == depth);
- JumpList checkResult;
- if (!emitJump(JSOP_GOTO, &checkResult)) // goto checkResult
+
+ // Step v.
+ if (!emitCheckIsObj(CheckIsObjectKind::IteratorReturn)) // ITER OLDRESULT FTYPE FVALUE RESULT
return false;
- // Catch epilogue.
+ // Steps vi-viii.
+ //
+ // Check if the returned object from iterator.return() is done. If not,
+ // continuing yielding.
+ IfThenElseEmitter ifReturnDone(this);
+ if (!emit1(JSOP_DUP)) // ITER OLDRESULT FTYPE FVALUE RESULT RESULT
+ return false;
+ if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER OLDRESULT FTYPE FVALUE RESULT DONE
+ return false;
+ if (!ifReturnDone.emitIfElse()) // ITER OLDRESULT FTYPE FVALUE RESULT
+ return false;
+ if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // ITER OLDRESULT FTYPE FVALUE VALUE
+ return false;
+ if (!emitPrepareIteratorResult()) // ITER OLDRESULT FTYPE FVALUE VALUE RESULT
+ return false;
+ if (!emit1(JSOP_SWAP)) // ITER OLDRESULT FTYPE FVALUE RESULT VALUE
+ return false;
+ if (!emitFinishIteratorResult(true)) // ITER OLDRESULT FTYPE FVALUE RESULT
+ return false;
+ if (!emit1(JSOP_SETRVAL)) // ITER OLDRESULT FTYPE FVALUE
+ return false;
+ savedDepthTemp = this->stackDepth;
+ if (!ifReturnDone.emitElse()) // ITER OLDRESULT FTYPE FVALUE RESULT
+ return false;
+ if (!emit2(JSOP_UNPICK, 3)) // ITER RESULT OLDRESULT FTYPE FVALUE
+ return false;
+ if (!emitUint16Operand(JSOP_POPN, 3)) // ITER RESULT
+ return false;
+ {
+ // goto tryStart;
+ JumpList beq;
+ JumpTarget breakTarget{ -1 };
+ if (!emitBackwardJump(JSOP_GOTO, tryStart, &beq, &breakTarget)) // ITER RESULT
+ return false;
+ }
+ this->stackDepth = savedDepthTemp;
+ if (!ifReturnDone.emitEnd())
+ return false;
- // This is a peace offering to ReconstructPCStack. See the note in EmitTry.
- if (!emit1(JSOP_NOP))
+ if (!ifReturnMethodIsDefined.emitElse()) // ITER RESULT FTYPE FVALUE ITER RET
return false;
- if (!tryNoteList.append(JSTRY_CATCH, depth, tryStart.offset + JSOP_TRY_LENGTH, tryEnd.offset))
+ if (!emit1(JSOP_POP)) // ITER RESULT FTYPE FVALUE ITER
+ return false;
+ if (!emit1(JSOP_POP)) // ITER RESULT FTYPE FVALUE
+ return false;
+ if (!ifReturnMethodIsDefined.emitEnd())
+ return false;
+
+ if (!ifGeneratorClosing.emitEnd())
return false;
- // After the try/catch block: send the received value to the iterator.
- if (!emitJumpTargetAndPatch(send)) // send:
+ if (!tryCatch.emitEnd())
return false;
- // Send location.
+ // After the try-catch-finally block: send the received value to the iterator.
// result = iter.next(received) // ITER RECEIVED
if (!emit1(JSOP_SWAP)) // RECEIVED ITER
return false;
@@ -7650,7 +8587,7 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter, ParseNode* gen)
if (!emitCheckIsObj(CheckIsObjectKind::IteratorNext)) // ITER RESULT
return false;
checkTypeSet(JSOP_CALL);
- MOZ_ASSERT(this->stackDepth == depth);
+ MOZ_ASSERT(this->stackDepth == startDepth);
if (!emitJumpTargetAndPatch(checkResult)) // checkResult:
return false;
@@ -7661,10 +8598,12 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter, ParseNode* gen)
if (!emitAtomOp(cx->names().done, JSOP_GETPROP)) // ITER RESULT DONE
return false;
// if (!DONE) goto tryStart;
- JumpList beq;
- JumpTarget breakTarget{ -1 };
- if (!emitBackwardJump(JSOP_IFEQ, tryStart, &beq, &breakTarget)) // ITER RESULT
- return false;
+ {
+ JumpList beq;
+ JumpTarget breakTarget{ -1 };
+ if (!emitBackwardJump(JSOP_IFEQ, tryStart, &beq, &breakTarget)) // ITER RESULT
+ return false;
+ }
// result.value
if (!emit1(JSOP_SWAP)) // RESULT ITER
@@ -7674,7 +8613,7 @@ BytecodeEmitter::emitYieldStar(ParseNode* iter, ParseNode* gen)
if (!emitAtomOp(cx->names().value, JSOP_GETPROP)) // VALUE
return false;
- MOZ_ASSERT(this->stackDepth == depth - 1);
+ MOZ_ASSERT(this->stackDepth == startDepth - 1);
return true;
}
@@ -7996,10 +8935,10 @@ BytecodeEmitter::emitSelfHostedForceInterpreter(ParseNode* pn)
}
bool
-BytecodeEmitter::emitSelfHostedAllowContentSpread(ParseNode* pn)
+BytecodeEmitter::emitSelfHostedAllowContentIter(ParseNode* pn)
{
if (pn->pn_count != 2) {
- reportError(pn, JSMSG_MORE_ARGS_NEEDED, "allowContentSpread", "1", "");
+ reportError(pn, JSMSG_MORE_ARGS_NEEDED, "allowContentIter", "1", "");
return false;
}
@@ -8017,7 +8956,7 @@ BytecodeEmitter::isRestParameter(ParseNode* pn, bool* result)
FunctionBox* funbox = sc->asFunctionBox();
RootedFunction fun(cx, funbox->function());
- if (!fun->hasRest()) {
+ if (!funbox->hasRest()) {
*result = false;
return true;
}
@@ -8025,7 +8964,7 @@ BytecodeEmitter::isRestParameter(ParseNode* pn, bool* result)
if (!pn->isKind(PNK_NAME)) {
if (emitterMode == BytecodeEmitter::SelfHosting && pn->isKind(PNK_CALL)) {
ParseNode* pn2 = pn->pn_head;
- if (pn2->getKind() == PNK_NAME && pn2->name() == cx->names().allowContentSpread)
+ if (pn2->getKind() == PNK_NAME && pn2->name() == cx->names().allowContentIter)
return isRestParameter(pn2->pn_next, result);
}
*result = false;
@@ -8133,8 +9072,8 @@ BytecodeEmitter::emitCallOrNew(ParseNode* pn)
return emitSelfHostedResumeGenerator(pn);
if (pn2->name() == cx->names().forceInterpreter)
return emitSelfHostedForceInterpreter(pn);
- if (pn2->name() == cx->names().allowContentSpread)
- return emitSelfHostedAllowContentSpread(pn);
+ if (pn2->name() == cx->names().allowContentIter)
+ return emitSelfHostedAllowContentIter(pn);
// Fall through.
}
if (!emitGetName(pn2, callop))
@@ -8449,13 +9388,13 @@ BytecodeEmitter::emitConditionalExpression(ConditionalExpression& conditional)
if (!ifThenElse.emitCond())
return false;
- if (!emitConditionallyExecutedTree(&conditional.thenExpression()))
+ if (!emitTreeInBranch(&conditional.thenExpression()))
return false;
if (!ifThenElse.emitElse())
return false;
- if (!emitConditionallyExecutedTree(&conditional.elseExpression()))
+ if (!emitTreeInBranch(&conditional.elseExpression()))
return false;
if (!ifThenElse.emitEnd())
@@ -8532,6 +9471,10 @@ BytecodeEmitter::emitPropertyList(ParseNode* pn, MutableHandlePlainObject objp,
op == JSOP_INITPROP_GETTER ||
op == JSOP_INITPROP_SETTER);
+ FunctionPrefixKind prefixKind = op == JSOP_INITPROP_GETTER ? FunctionPrefixKind::Get
+ : op == JSOP_INITPROP_SETTER ? FunctionPrefixKind::Set
+ : FunctionPrefixKind::None;
+
if (op == JSOP_INITPROP_GETTER || op == JSOP_INITPROP_SETTER)
objp.set(nullptr);
@@ -8573,6 +9516,12 @@ BytecodeEmitter::emitPropertyList(ParseNode* pn, MutableHandlePlainObject objp,
case JSOP_INITHIDDENPROP_SETTER: op = JSOP_INITHIDDENELEM_SETTER; break;
default: MOZ_CRASH("Invalid op");
}
+ if (propdef->pn_right->isDirectRHSAnonFunction()) {
+ if (!emitDupAt(1))
+ return false;
+ if (!emit2(JSOP_SETFUNNAME, uint8_t(prefixKind)))
+ return false;
+ }
if (!emit1(op))
return false;
} else {
@@ -8597,6 +9546,11 @@ BytecodeEmitter::emitPropertyList(ParseNode* pn, MutableHandlePlainObject objp,
objp.set(nullptr);
}
+ if (propdef->pn_right->isDirectRHSAnonFunction()) {
+ RootedAtom keyName(cx, key->pn_atom);
+ if (!setOrEmitSetFunName(propdef->pn_right, keyName, prefixKind))
+ return false;
+ }
if (!emitIndex32(op, index))
return false;
}
@@ -8774,7 +9728,7 @@ BytecodeEmitter::emitArray(ParseNode* pn, uint32_t count, JSOp op)
if (!updateSourceCoordNotes(pn2->pn_pos.begin))
return false;
- bool allowSelfHostedSpread = false;
+ bool allowSelfHostedIter = false;
if (pn2->isKind(PNK_ELISION)) {
if (!emit1(JSOP_HOLE))
return false;
@@ -8785,9 +9739,9 @@ BytecodeEmitter::emitArray(ParseNode* pn, uint32_t count, JSOp op)
if (emitterMode == BytecodeEmitter::SelfHosting &&
expr->isKind(PNK_CALL) &&
- expr->pn_head->name() == cx->names().allowContentSpread)
+ expr->pn_head->name() == cx->names().allowContentIter)
{
- allowSelfHostedSpread = true;
+ allowSelfHostedIter = true;
}
} else {
expr = pn2;
@@ -8802,7 +9756,7 @@ BytecodeEmitter::emitArray(ParseNode* pn, uint32_t count, JSOp op)
return false;
if (!emit2(JSOP_PICK, 2)) // ITER ARRAY INDEX
return false;
- if (!emitSpread(allowSelfHostedSpread)) // ARRAY INDEX
+ if (!emitSpread(allowSelfHostedIter)) // ARRAY INDEX
return false;
} else if (afterSpread) {
if (!emit1(JSOP_INITELEM_INC))
@@ -8960,7 +9914,7 @@ BytecodeEmitter::emitFunctionFormalParameters(ParseNode* pn)
EmitterScope* funScope = innermostEmitterScope;
bool hasParameterExprs = funbox->hasParameterExprs;
- bool hasRest = funbox->function()->hasRest();
+ bool hasRest = funbox->hasRest();
uint16_t argSlot = 0;
for (ParseNode* arg = pn->pn_head; arg != funBody; arg = arg->pn_next, argSlot++) {
@@ -9017,7 +9971,7 @@ BytecodeEmitter::emitFunctionFormalParameters(ParseNode* pn)
return false;
if (!emit1(JSOP_POP))
return false;
- if (!emitConditionallyExecutedTree(initializer))
+ if (!emitInitializerInBranch(initializer, bindingElement))
return false;
if (!emitJumpTargetAndPatch(jump))
return false;
@@ -9728,7 +10682,7 @@ BytecodeEmitter::emitTree(ParseNode* pn, EmitLineNumberNote emitLineNote)
}
bool
-BytecodeEmitter::emitConditionallyExecutedTree(ParseNode* pn)
+BytecodeEmitter::emitTreeInBranch(ParseNode* pn)
{
// Code that may be conditionally executed always need their own TDZ
// cache.
@@ -9962,15 +10916,6 @@ CGConstList::finish(ConstArray* array)
array->vector[i] = list[i];
}
-bool
-CGObjectList::isAdded(ObjectBox* objbox)
-{
- // An objbox added to CGObjectList as non-first element has non-null
- // emitLink member. The first element has null emitLink.
- // Check for firstbox to cover the first element.
- return objbox->emitLink || objbox == firstbox;
-}
-
/*
* Find the index of the given object for code generator.
*
@@ -9982,15 +10927,9 @@ CGObjectList::isAdded(ObjectBox* objbox)
unsigned
CGObjectList::add(ObjectBox* objbox)
{
- if (isAdded(objbox))
- return indexOf(objbox->object);
-
+ MOZ_ASSERT(!objbox->emitLink);
objbox->emitLink = lastbox;
lastbox = objbox;
-
- // See the comment in CGObjectList::isAdded.
- if (!firstbox)
- firstbox = objbox;
return length++;
}
@@ -10017,12 +10956,7 @@ CGObjectList::finish(ObjectArray* array)
MOZ_ASSERT(!*cursor);
MOZ_ASSERT(objbox->object->isTenured());
*cursor = objbox->object;
-
- ObjectBox* tmp = objbox->emitLink;
- // Clear emitLink for CGObjectList::isAdded.
- objbox->emitLink = nullptr;
- objbox = tmp;
- } while (objbox != nullptr);
+ } while ((objbox = objbox->emitLink) != nullptr);
MOZ_ASSERT(cursor == array->vector);
}
diff --git a/js/src/frontend/BytecodeEmitter.h b/js/src/frontend/BytecodeEmitter.h
index 1bb4191ee..04307c8c1 100644
--- a/js/src/frontend/BytecodeEmitter.h
+++ b/js/src/frontend/BytecodeEmitter.h
@@ -43,12 +43,10 @@ class CGConstList {
struct CGObjectList {
uint32_t length; /* number of emitted so far objects */
- ObjectBox* firstbox; /* first emitted object */
ObjectBox* lastbox; /* last emitted object */
- CGObjectList() : length(0), firstbox(nullptr), lastbox(nullptr) {}
+ CGObjectList() : length(0), lastbox(nullptr) {}
- bool isAdded(ObjectBox* objbox);
unsigned add(ObjectBox* objbox);
unsigned indexOf(JSObject* obj);
void finish(ObjectArray* array);
@@ -102,7 +100,9 @@ struct CGScopeNoteList {
struct CGYieldOffsetList {
Vector<uint32_t> list;
- explicit CGYieldOffsetList(ExclusiveContext* cx) : list(cx) {}
+ uint32_t numYields;
+ uint32_t numAwaits;
+ explicit CGYieldOffsetList(ExclusiveContext* cx) : list(cx), numYields(0), numAwaits(0) {}
MOZ_MUST_USE bool append(uint32_t offset) { return list.append(offset); }
size_t length() const { return list.length(); }
@@ -435,7 +435,7 @@ struct MOZ_STACK_CLASS BytecodeEmitter
MOZ_MUST_USE bool emitTree(ParseNode* pn, EmitLineNumberNote emitLineNote = EMIT_LINENOTE);
// Emit code for the tree rooted at pn with its own TDZ cache.
- MOZ_MUST_USE bool emitConditionallyExecutedTree(ParseNode* pn);
+ MOZ_MUST_USE bool emitTreeInBranch(ParseNode* pn);
// Emit global, eval, or module code for tree rooted at body. Always
// encompasses the entire source.
@@ -454,8 +454,6 @@ struct MOZ_STACK_CLASS BytecodeEmitter
JSOp strictifySetNameOp(JSOp op);
- MOZ_MUST_USE bool flushPops(int* npops);
-
MOZ_MUST_USE bool emitCheck(ptrdiff_t delta, ptrdiff_t* offset);
// Emit one bytecode.
@@ -475,6 +473,9 @@ struct MOZ_STACK_CLASS BytecodeEmitter
// Helper to emit JSOP_CHECKISOBJ.
MOZ_MUST_USE bool emitCheckIsObj(CheckIsObjectKind kind);
+ // Helper to emit JSOP_CHECKISCALLABLE.
+ MOZ_MUST_USE bool emitCheckIsCallable(CheckIsCallableKind kind);
+
// Emit a bytecode followed by an uint16 immediate operand stored in
// big-endian order.
MOZ_MUST_USE bool emitUint16Operand(JSOp op, uint32_t operand);
@@ -611,7 +612,7 @@ struct MOZ_STACK_CLASS BytecodeEmitter
// Emit bytecode to put operands for a JSOP_GETELEM/CALLELEM/SETELEM/DELELEM
// opcode onto the stack in the right order. In the case of SETELEM, the
// value to be assigned must already be pushed.
- enum class EmitElemOption { Get, Set, Call, IncDec, CompoundAssign };
+ enum class EmitElemOption { Get, Set, Call, IncDec, CompoundAssign, Ref };
MOZ_MUST_USE bool emitElemOperands(ParseNode* pn, EmitElemOption opts);
MOZ_MUST_USE bool emitElemOpBase(JSOp op);
@@ -644,12 +645,18 @@ struct MOZ_STACK_CLASS BytecodeEmitter
DestructuringAssignment
};
- // emitDestructuringLHS assumes the to-be-destructured value has been pushed on
- // the stack and emits code to destructure a single lhs expression (either a
- // name or a compound []/{} expression).
- MOZ_MUST_USE bool emitDestructuringLHS(ParseNode* target, DestructuringFlavor flav);
- MOZ_MUST_USE bool emitConditionallyExecutedDestructuringLHS(ParseNode* target,
- DestructuringFlavor flav);
+ // emitDestructuringLHSRef emits the lhs expression's reference.
+ // If the lhs expression is object property |OBJ.prop|, it emits |OBJ|.
+ // If it's object element |OBJ[ELEM]|, it emits |OBJ| and |ELEM|.
+ // If there's nothing to evaluate for the reference, it emits nothing.
+ // |emitted| parameter receives the number of values pushed onto the stack.
+ MOZ_MUST_USE bool emitDestructuringLHSRef(ParseNode* target, size_t* emitted);
+
+ // emitSetOrInitializeDestructuring assumes the lhs expression's reference
+ // and the to-be-destructured value has been pushed on the stack. It emits
+ // code to destructure a single lhs expression (either a name or a compound
+ // []/{} expression).
+ MOZ_MUST_USE bool emitSetOrInitializeDestructuring(ParseNode* target, DestructuringFlavor flav);
// emitDestructuringOps assumes the to-be-destructured value has been
// pushed on the stack and emits code to destructure each part of a [] or
@@ -675,10 +682,25 @@ struct MOZ_STACK_CLASS BytecodeEmitter
// Pops iterator from the top of the stack. Pushes the result of |.next()|
// onto the stack.
MOZ_MUST_USE bool emitIteratorNext(ParseNode* pn, bool allowSelfHosted = false);
+ MOZ_MUST_USE bool emitIteratorClose(CompletionKind completionKind = CompletionKind::Normal,
+ bool allowSelfHosted = false);
+
+ template <typename InnerEmitter>
+ MOZ_MUST_USE bool wrapWithDestructuringIteratorCloseTryNote(int32_t iterDepth,
+ InnerEmitter emitter);
// Check if the value on top of the stack is "undefined". If so, replace
// that value on the stack with the value defined by |defaultExpr|.
- MOZ_MUST_USE bool emitDefault(ParseNode* defaultExpr);
+ // |pattern| is a lhs node of the default expression. If it's an
+ // identifier and |defaultExpr| is an anonymous function, |SetFunctionName|
+ // is called at compile time.
+ MOZ_MUST_USE bool emitDefault(ParseNode* defaultExpr, ParseNode* pattern);
+
+ MOZ_MUST_USE bool setOrEmitSetFunName(ParseNode* maybeFun, HandleAtom name,
+ FunctionPrefixKind prefixKind);
+
+ MOZ_MUST_USE bool emitInitializer(ParseNode* initializer, ParseNode* pattern);
+ MOZ_MUST_USE bool emitInitializerInBranch(ParseNode* initializer, ParseNode* pattern);
MOZ_MUST_USE bool emitCallSiteObject(ParseNode* pn);
MOZ_MUST_USE bool emitTemplateString(ParseNode* pn);
@@ -713,7 +735,7 @@ struct MOZ_STACK_CLASS BytecodeEmitter
MOZ_MUST_USE bool emitSelfHostedCallFunction(ParseNode* pn);
MOZ_MUST_USE bool emitSelfHostedResumeGenerator(ParseNode* pn);
MOZ_MUST_USE bool emitSelfHostedForceInterpreter(ParseNode* pn);
- MOZ_MUST_USE bool emitSelfHostedAllowContentSpread(ParseNode* pn);
+ MOZ_MUST_USE bool emitSelfHostedAllowContentIter(ParseNode* pn);
MOZ_MUST_USE bool emitComprehensionFor(ParseNode* compFor);
MOZ_MUST_USE bool emitComprehensionForIn(ParseNode* pn);
diff --git a/js/src/frontend/FullParseHandler.h b/js/src/frontend/FullParseHandler.h
index add881900..0fd137796 100644
--- a/js/src/frontend/FullParseHandler.h
+++ b/js/src/frontend/FullParseHandler.h
@@ -665,6 +665,11 @@ class FullParseHandler
ParseNode* pn);
inline void setLastFunctionFormalParameterDestructuring(ParseNode* funcpn, ParseNode* pn);
+ void checkAndSetIsDirectRHSAnonFunction(ParseNode* pn) {
+ if (IsAnonymousFunctionDefinition(pn))
+ pn->setDirectRHSAnonFunction(true);
+ }
+
ParseNode* newFunctionDefinition() {
return new_<CodeNode>(PNK_FUNCTION, pos());
}
@@ -942,6 +947,8 @@ FullParseHandler::setLastFunctionFormalParameterDefault(ParseNode* funcpn, Parse
if (!pn)
return false;
+ checkAndSetIsDirectRHSAnonFunction(defaultValue);
+
funcpn->pn_body->pn_pos.end = pn->pn_pos.end;
ParseNode* pnchild = funcpn->pn_body->pn_head;
ParseNode* pnlast = funcpn->pn_body->last();
diff --git a/js/src/frontend/ParseNode-inl.h b/js/src/frontend/ParseNode-inl.h
index 395d09b5b..21bd83766 100644
--- a/js/src/frontend/ParseNode-inl.h
+++ b/js/src/frontend/ParseNode-inl.h
@@ -18,7 +18,7 @@ inline PropertyName*
ParseNode::name() const
{
MOZ_ASSERT(isKind(PNK_FUNCTION) || isKind(PNK_NAME));
- JSAtom* atom = isKind(PNK_FUNCTION) ? pn_funbox->function()->name() : pn_atom;
+ JSAtom* atom = isKind(PNK_FUNCTION) ? pn_funbox->function()->explicitName() : pn_atom;
return atom->asPropertyName();
}
diff --git a/js/src/frontend/ParseNode.cpp b/js/src/frontend/ParseNode.cpp
index f79baba9e..ece3a45df 100644
--- a/js/src/frontend/ParseNode.cpp
+++ b/js/src/frontend/ParseNode.cpp
@@ -902,3 +902,21 @@ FunctionBox::trace(JSTracer* trc)
if (enclosingScope_)
TraceRoot(trc, &enclosingScope_, "funbox-enclosingScope");
}
+
+bool
+js::frontend::IsAnonymousFunctionDefinition(ParseNode* pn)
+{
+ // ES 2017 draft
+ // 12.15.2 (ArrowFunction, AsyncArrowFunction).
+ // 14.1.12 (FunctionExpression).
+ // 14.4.8 (GeneratorExpression).
+ // 14.6.8 (AsyncFunctionExpression)
+ if (pn->isKind(PNK_FUNCTION) && !pn->pn_funbox->function()->explicitName())
+ return true;
+
+ // 14.5.8 (ClassExpression)
+ if (pn->is<ClassNode>() && !pn->as<ClassNode>().names())
+ return true;
+
+ return false;
+}
diff --git a/js/src/frontend/ParseNode.h b/js/src/frontend/ParseNode.h
index d37aaaae0..c58dab431 100644
--- a/js/src/frontend/ParseNode.h
+++ b/js/src/frontend/ParseNode.h
@@ -450,6 +450,9 @@ class ParseNode
uint8_t pn_op; /* see JSOp enum and jsopcode.tbl */
uint8_t pn_arity:4; /* see ParseNodeArity enum */
bool pn_parens:1; /* this expr was enclosed in parens */
+ bool pn_rhs_anon_fun:1; /* this expr is anonymous function or class that
+ * is a direct RHS of PNK_ASSIGN or PNK_COLON of
+ * property, that needs SetFunctionName. */
ParseNode(const ParseNode& other) = delete;
void operator=(const ParseNode& other) = delete;
@@ -460,6 +463,7 @@ class ParseNode
pn_op(op),
pn_arity(arity),
pn_parens(false),
+ pn_rhs_anon_fun(false),
pn_pos(0, 0),
pn_next(nullptr)
{
@@ -472,6 +476,7 @@ class ParseNode
pn_op(op),
pn_arity(arity),
pn_parens(false),
+ pn_rhs_anon_fun(false),
pn_pos(pos),
pn_next(nullptr)
{
@@ -512,6 +517,13 @@ class ParseNode
bool isLikelyIIFE() const { return isInParens(); }
void setInParens(bool enabled) { pn_parens = enabled; }
+ bool isDirectRHSAnonFunction() const {
+ return pn_rhs_anon_fun;
+ }
+ void setDirectRHSAnonFunction(bool enabled) {
+ pn_rhs_anon_fun = enabled;
+ }
+
TokenPos pn_pos; /* two 16-bit pairs here, for 64 bits */
ParseNode* pn_next; /* intrinsic link in parent PN_LIST */
@@ -637,14 +649,12 @@ class ParseNode
MOZ_ASSERT(pn_arity == PN_CODE && getKind() == PNK_FUNCTION);
MOZ_ASSERT(isOp(JSOP_LAMBDA) || // lambda, genexpr
isOp(JSOP_LAMBDA_ARROW) || // arrow function
- isOp(JSOP_FUNWITHPROTO) || // already emitted lambda with needsProto
isOp(JSOP_DEFFUN) || // non-body-level function statement
isOp(JSOP_NOP) || // body-level function stmt in global code
isOp(JSOP_GETLOCAL) || // body-level function stmt in function code
isOp(JSOP_GETARG) || // body-level function redeclaring formal
isOp(JSOP_INITLEXICAL)); // block-level function stmt
- return !isOp(JSOP_LAMBDA) && !isOp(JSOP_LAMBDA_ARROW) &&
- !isOp(JSOP_FUNWITHPROTO) && !isOp(JSOP_DEFFUN);
+ return !isOp(JSOP_LAMBDA) && !isOp(JSOP_LAMBDA_ARROW) && !isOp(JSOP_DEFFUN);
}
/*
@@ -1444,6 +1454,9 @@ FunctionFormalParametersList(ParseNode* fn, unsigned* numFormals)
return argsBody->pn_head;
}
+bool
+IsAnonymousFunctionDefinition(ParseNode* pn);
+
} /* namespace frontend */
} /* namespace js */
diff --git a/js/src/frontend/Parser.cpp b/js/src/frontend/Parser.cpp
index 49fef2bf9..f4c02720a 100644
--- a/js/src/frontend/Parser.cpp
+++ b/js/src/frontend/Parser.cpp
@@ -326,10 +326,14 @@ ParseContext::init()
if (fun->isNamedLambda()) {
if (!namedLambdaScope_->init(this))
return false;
- AddDeclaredNamePtr p = namedLambdaScope_->lookupDeclaredNameForAdd(fun->name());
+ AddDeclaredNamePtr p =
+ namedLambdaScope_->lookupDeclaredNameForAdd(fun->explicitName());
MOZ_ASSERT(!p);
- if (!namedLambdaScope_->addDeclaredName(this, p, fun->name(), DeclarationKind::Const))
+ if (!namedLambdaScope_->addDeclaredName(this, p, fun->explicitName(),
+ DeclarationKind::Const))
+ {
return false;
+ }
}
if (!functionScope_->init(this))
@@ -367,7 +371,7 @@ ParseContext::removeInnerFunctionBoxesForAnnexB(JSAtom* name)
{
for (uint32_t i = 0; i < innerFunctionBoxesForAnnexB_->length(); i++) {
if (FunctionBox* funbox = innerFunctionBoxesForAnnexB_[i]) {
- if (funbox->function()->name() == name)
+ if (funbox->function()->explicitName() == name)
innerFunctionBoxesForAnnexB_[i] = nullptr;
}
}
@@ -465,6 +469,7 @@ FunctionBox::FunctionBox(ExclusiveContext* cx, LifoAlloc& alloc, ObjectBox* trac
usesApply(false),
usesThis(false),
usesReturn(false),
+ hasRest_(false),
funCxFlags()
{
// Functions created at parse time may be set singleton after parsing and
@@ -477,7 +482,6 @@ void
FunctionBox::initFromLazyFunction()
{
JSFunction* fun = function();
- length = fun->nargs() - fun->hasRest();
if (fun->lazyScript()->isDerivedClassConstructor())
setDerivedClassConstructor();
if (fun->lazyScript()->needsHomeObject())
@@ -492,8 +496,6 @@ FunctionBox::initStandaloneFunction(Scope* enclosingScope)
// Standalone functions are Function or Generator constructors and are
// always scoped to the global.
MOZ_ASSERT(enclosingScope->is<GlobalScope>());
- JSFunction* fun = function();
- length = fun->nargs() - fun->hasRest();
enclosingScope_ = enclosingScope;
allowNewTarget_ = true;
thisBinding_ = ThisBinding::Function;
@@ -836,7 +838,7 @@ Parser<ParseHandler>::reportBadReturn(Node pn, ParseReportKind kind,
unsigned errnum, unsigned anonerrnum)
{
JSAutoByteString name;
- if (JSAtom* atom = pc->functionBox()->function()->name()) {
+ if (JSAtom* atom = pc->functionBox()->function()->explicitName()) {
if (!AtomToPrintableString(context, atom, &name))
return false;
} else {
@@ -2214,6 +2216,8 @@ Parser<SyntaxParseHandler>::finishFunction()
lazy->setStrict();
lazy->setGeneratorKind(funbox->generatorKind());
lazy->setAsyncKind(funbox->asyncKind());
+ if (funbox->hasRest())
+ lazy->setHasRest();
if (funbox->isLikelyConstructorWrapper())
lazy->setLikelyConstructorWrapper();
if (funbox->isDerivedClassConstructor())
@@ -2245,13 +2249,13 @@ GetYieldHandling(GeneratorKind generatorKind, FunctionAsyncKind asyncKind)
template <>
ParseNode*
-Parser<FullParseHandler>::standaloneFunctionBody(HandleFunction fun,
- HandleScope enclosingScope,
- Handle<PropertyNameVector> formals,
- GeneratorKind generatorKind,
- FunctionAsyncKind asyncKind,
- Directives inheritedDirectives,
- Directives* newDirectives)
+Parser<FullParseHandler>::standaloneFunction(HandleFunction fun,
+ HandleScope enclosingScope,
+ Maybe<uint32_t> parameterListEnd,
+ GeneratorKind generatorKind,
+ FunctionAsyncKind asyncKind,
+ Directives inheritedDirectives,
+ Directives* newDirectives)
{
MOZ_ASSERT(checkOptionsCalled);
@@ -2274,25 +2278,14 @@ Parser<FullParseHandler>::standaloneFunctionBody(HandleFunction fun,
if (!funpc.init())
return null();
funpc.setIsStandaloneFunctionBody();
- funpc.functionScope().useAsVarScope(&funpc);
-
- if (formals.length() >= ARGNO_LIMIT) {
- report(ParseError, false, null(), JSMSG_TOO_MANY_FUN_ARGS);
- return null();
- }
-
- bool duplicatedParam = false;
- for (uint32_t i = 0; i < formals.length(); i++) {
- if (!notePositionalFormalParameter(fn, formals[i], false, &duplicatedParam))
- return null();
- }
- funbox->hasDuplicateParameters = duplicatedParam;
YieldHandling yieldHandling = GetYieldHandling(generatorKind, asyncKind);
AutoAwaitIsKeyword awaitIsKeyword(&tokenStream, asyncKind == AsyncFunction);
- ParseNode* pn = functionBody(InAllowed, yieldHandling, Statement, StatementListBody);
- if (!pn)
+ if (!functionFormalParametersAndBody(InAllowed, yieldHandling, fn, Statement,
+ parameterListEnd))
+ {
return null();
+ }
TokenKind tt;
if (!tokenStream.getToken(&tt, TokenStream::Operand))
@@ -2303,15 +2296,7 @@ Parser<FullParseHandler>::standaloneFunctionBody(HandleFunction fun,
return null();
}
- if (!FoldConstants(context, &pn, this))
- return null();
-
- fn->pn_pos.end = pos().end;
-
- MOZ_ASSERT(fn->pn_body->isKind(PNK_PARAMSBODY));
- fn->pn_body->append(pn);
-
- if (!finishFunction())
+ if (!FoldConstants(context, &fn, this))
return null();
return fn;
@@ -2776,7 +2761,7 @@ Parser<ParseHandler>::functionArguments(YieldHandling yieldHandling, FunctionSyn
}
hasRest = true;
- funbox->function()->setHasRest();
+ funbox->setHasRest();
if (!tokenStream.getToken(&tt))
return false;
@@ -3415,7 +3400,8 @@ template <typename ParseHandler>
bool
Parser<ParseHandler>::functionFormalParametersAndBody(InHandling inHandling,
YieldHandling yieldHandling,
- Node pn, FunctionSyntaxKind kind)
+ Node pn, FunctionSyntaxKind kind,
+ Maybe<uint32_t> parameterListEnd /* = Nothing() */)
{
// Given a properly initialized parse context, try to parse an actual
// function without concern for conversion to strict mode, use of lazy
@@ -3447,6 +3433,13 @@ Parser<ParseHandler>::functionFormalParametersAndBody(InHandling inHandling,
}
}
+ // When parsing something for new Function() we have to make sure to
+ // only treat a certain part of the source as a parameter list.
+ if (parameterListEnd.isSome() && parameterListEnd.value() != pos().begin) {
+ report(ParseError, false, null(), JSMSG_UNEXPECTED_PARAMLIST_END);
+ return false;
+ }
+
// Parse the function body.
FunctionBodyType bodyType = StatementListBody;
TokenKind tt;
@@ -3488,8 +3481,8 @@ Parser<ParseHandler>::functionFormalParametersAndBody(InHandling inHandling,
if (!body)
return false;
- if ((kind != Method && !IsConstructorKind(kind)) && fun->name()) {
- RootedPropertyName propertyName(context, fun->name()->asPropertyName());
+ if ((kind != Method && !IsConstructorKind(kind)) && fun->explicitName()) {
+ RootedPropertyName propertyName(context, fun->explicitName()->asPropertyName());
if (!checkStrictBinding(propertyName, handler.getPosition(pn)))
return false;
}
@@ -3502,7 +3495,7 @@ Parser<ParseHandler>::functionFormalParametersAndBody(InHandling inHandling,
report(ParseError, false, null(), JSMSG_CURLY_AFTER_BODY);
return false;
}
- funbox->bufEnd = pos().begin + 1;
+ funbox->bufEnd = pos().end;
} else {
#if !JS_HAS_EXPR_CLOSURES
MOZ_ASSERT(kind == Arrow);
@@ -4348,6 +4341,8 @@ Parser<ParseHandler>::declarationPattern(Node decl, DeclarationKind declKind, To
if (!init)
return null();
+ handler.checkAndSetIsDirectRHSAnonFunction(init);
+
if (forHeadKind) {
// For for(;;) declarations, consistency with |for (;| parsing requires
// that the ';' first be examined as Operand, even though absence of a
@@ -4377,6 +4372,8 @@ Parser<ParseHandler>::initializerInNameDeclaration(Node decl, Node binding,
if (!initializer)
return false;
+ handler.checkAndSetIsDirectRHSAnonFunction(initializer);
+
if (forHeadKind) {
if (initialDeclaration) {
bool isForIn, isForOf;
@@ -5074,7 +5071,7 @@ Parser<FullParseHandler>::exportDeclaration()
if (!kid)
return null();
- if (!checkExportedName(kid->pn_funbox->function()->name()))
+ if (!checkExportedName(kid->pn_funbox->function()->explicitName()))
return null();
break;
@@ -6681,8 +6678,6 @@ Parser<ParseHandler>::classDefinition(YieldHandling yieldHandling,
return null();
}
- // FIXME: Implement ES6 function "name" property semantics
- // (bug 883377).
RootedAtom funName(context);
switch (propType) {
case PropertyType::GetterNoExpressionClosure:
@@ -6705,6 +6700,8 @@ Parser<ParseHandler>::classDefinition(YieldHandling yieldHandling,
if (!fn)
return null();
+ handler.checkAndSetIsDirectRHSAnonFunction(fn);
+
JSOp op = JSOpFromPropertyType(propType);
if (!handler.addClassMethodDefinition(classMethods, propName, fn, op, isStatic))
return null();
@@ -7764,6 +7761,9 @@ Parser<ParseHandler>::assignExpr(InHandling inHandling, YieldHandling yieldHandl
return null();
}
+ if (kind == PNK_ASSIGN)
+ handler.checkAndSetIsDirectRHSAnonFunction(rhs);
+
return handler.newAssignment(kind, lhs, rhs, op);
}
@@ -9166,6 +9166,8 @@ Parser<ParseHandler>::objectLiteral(YieldHandling yieldHandling, PossibleError*
if (!propExpr)
return null();
+ handler.checkAndSetIsDirectRHSAnonFunction(propExpr);
+
if (foldConstants && !FoldConstants(context, &propExpr, this))
return null();
@@ -9279,6 +9281,8 @@ Parser<ParseHandler>::objectLiteral(YieldHandling yieldHandling, PossibleError*
return null();
}
+ handler.checkAndSetIsDirectRHSAnonFunction(rhs);
+
Node propExpr = handler.newAssignment(PNK_ASSIGN, lhs, rhs, JSOP_NOP);
if (!propExpr)
return null();
@@ -9289,8 +9293,6 @@ Parser<ParseHandler>::objectLiteral(YieldHandling yieldHandling, PossibleError*
if (!abortIfSyntaxParser())
return null();
} else {
- // FIXME: Implement ES6 function "name" property semantics
- // (bug 883377).
RootedAtom funName(context);
if (!tokenStream.isCurrentTokenType(TOK_RB)) {
funName = propAtom;
@@ -9306,6 +9308,8 @@ Parser<ParseHandler>::objectLiteral(YieldHandling yieldHandling, PossibleError*
if (!fn)
return null();
+ handler.checkAndSetIsDirectRHSAnonFunction(fn);
+
JSOp op = JSOpFromPropertyType(propType);
if (!handler.addObjectMethodDefinition(literal, propName, fn, op))
return null();
diff --git a/js/src/frontend/Parser.h b/js/src/frontend/Parser.h
index 0ad4d56a0..b58b021cd 100644
--- a/js/src/frontend/Parser.h
+++ b/js/src/frontend/Parser.h
@@ -1020,12 +1020,12 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
// Parse a module.
Node moduleBody(ModuleSharedContext* modulesc);
- // Parse a function, given only its body. Used for the Function and
- // Generator constructors.
- Node standaloneFunctionBody(HandleFunction fun, HandleScope enclosingScope,
- Handle<PropertyNameVector> formals,
- GeneratorKind generatorKind, FunctionAsyncKind asyncKind,
- Directives inheritedDirectives, Directives* newDirectives);
+ // Parse a function, used for the Function, GeneratorFunction, and
+ // AsyncFunction constructors.
+ Node standaloneFunction(HandleFunction fun, HandleScope enclosingScope,
+ mozilla::Maybe<uint32_t> parameterListEnd,
+ GeneratorKind generatorKind, FunctionAsyncKind asyncKind,
+ Directives inheritedDirectives, Directives* newDirectives);
// Parse a function, given only its arguments and body. Used for lazily
// parsed functions.
@@ -1041,7 +1041,9 @@ class Parser final : private JS::AutoGCRooter, public StrictModeGetter
// Parse a function's formal parameters and its body assuming its function
// ParseContext is already on the stack.
bool functionFormalParametersAndBody(InHandling inHandling, YieldHandling yieldHandling,
- Node pn, FunctionSyntaxKind kind);
+ Node pn, FunctionSyntaxKind kind,
+ mozilla::Maybe<uint32_t> parameterListEnd = mozilla::Nothing());
+
// Determine whether |yield| is a valid name in the current context, or
// whether it's prohibited due to strictness, JS version, or occurrence
diff --git a/js/src/frontend/SharedContext.h b/js/src/frontend/SharedContext.h
index 39df47c20..a6ac542f6 100644
--- a/js/src/frontend/SharedContext.h
+++ b/js/src/frontend/SharedContext.h
@@ -471,6 +471,7 @@ class FunctionBox : public ObjectBox, public SharedContext
bool usesApply:1; /* contains an f.apply() call */
bool usesThis:1; /* contains 'this' */
bool usesReturn:1; /* contains a 'return' statement */
+ bool hasRest_:1; /* has rest parameter */
FunctionContextFlags funCxFlags;
@@ -539,6 +540,11 @@ class FunctionBox : public ObjectBox, public SharedContext
bool isAsync() const { return asyncKind() == AsyncFunction; }
bool isArrow() const { return function()->isArrow(); }
+ bool hasRest() const { return hasRest_; }
+ void setHasRest() {
+ hasRest_ = true;
+ }
+
void setGeneratorKind(GeneratorKind kind) {
// A generator kind can be set at initialization, or when "yield" is
// first seen. In both cases the transition can only happen from
@@ -567,7 +573,7 @@ class FunctionBox : public ObjectBox, public SharedContext
void setHasInnerFunctions() { funCxFlags.hasInnerFunctions = true; }
bool hasSimpleParameterList() const {
- return !function()->hasRest() && !hasParameterExprs && !hasDestructuringArgs;
+ return !hasRest() && !hasParameterExprs && !hasDestructuringArgs;
}
bool hasMappedArgsObj() const {
diff --git a/js/src/frontend/SyntaxParseHandler.h b/js/src/frontend/SyntaxParseHandler.h
index 75c7e3333..b7f00605b 100644
--- a/js/src/frontend/SyntaxParseHandler.h
+++ b/js/src/frontend/SyntaxParseHandler.h
@@ -339,6 +339,9 @@ class SyntaxParseHandler
Node catchGuard, Node catchBody) { return true; }
MOZ_MUST_USE bool setLastFunctionFormalParameterDefault(Node funcpn, Node pn) { return true; }
+
+ void checkAndSetIsDirectRHSAnonFunction(Node pn) {}
+
Node newFunctionDefinition() { return NodeFunctionDefinition; }
bool setComprehensionLambdaBody(Node pn, Node body) { return true; }
void setFunctionFormalParametersAndBody(Node pn, Node kid) {}
diff --git a/js/src/frontend/TokenStream.cpp b/js/src/frontend/TokenStream.cpp
index c166ed414..179a7c244 100644
--- a/js/src/frontend/TokenStream.cpp
+++ b/js/src/frontend/TokenStream.cpp
@@ -118,13 +118,57 @@ IsIdentifier(const CharT* chars, size_t length)
return true;
}
+static uint32_t
+GetSingleCodePoint(const char16_t** p, const char16_t* end)
+{
+ uint32_t codePoint;
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(**p)) && *p + 1 < end) {
+ char16_t lead = **p;
+ char16_t maybeTrail = *(*p + 1);
+ if (unicode::IsTrailSurrogate(maybeTrail)) {
+ *p += 2;
+ return unicode::UTF16Decode(lead, maybeTrail);
+ }
+ }
+
+ codePoint = **p;
+ (*p)++;
+ return codePoint;
+}
+
+static bool
+IsIdentifierMaybeNonBMP(const char16_t* chars, size_t length)
+{
+ if (IsIdentifier(chars, length))
+ return true;
+
+ if (length == 0)
+ return false;
+
+ const char16_t* p = chars;
+ const char16_t* end = chars + length;
+ uint32_t codePoint;
+
+ codePoint = GetSingleCodePoint(&p, end);
+ if (!unicode::IsIdentifierStart(codePoint))
+ return false;
+
+ while (p < end) {
+ codePoint = GetSingleCodePoint(&p, end);
+ if (!unicode::IsIdentifierPart(codePoint))
+ return false;
+ }
+
+ return true;
+}
+
bool
frontend::IsIdentifier(JSLinearString* str)
{
JS::AutoCheckCannotGC nogc;
return str->hasLatin1Chars()
? ::IsIdentifier(str->latin1Chars(nogc), str->length())
- : ::IsIdentifier(str->twoByteChars(nogc), str->length());
+ : ::IsIdentifierMaybeNonBMP(str->twoByteChars(nogc), str->length());
}
bool
@@ -993,6 +1037,21 @@ IsTokenSane(Token* tp)
#endif
bool
+TokenStream::matchTrailForLeadSurrogate(char16_t lead, char16_t* trail, uint32_t* codePoint)
+{
+ int32_t maybeTrail = getCharIgnoreEOL();
+ if (!unicode::IsTrailSurrogate(maybeTrail)) {
+ ungetCharIgnoreEOL(maybeTrail);
+ return false;
+ }
+
+ if (trail)
+ *trail = maybeTrail;
+ *codePoint = unicode::UTF16Decode(lead, maybeTrail);
+ return true;
+}
+
+bool
TokenStream::putIdentInTokenbuf(const char16_t* identStart)
{
int32_t c;
@@ -1003,11 +1062,39 @@ TokenStream::putIdentInTokenbuf(const char16_t* identStart)
tokenbuf.clear();
for (;;) {
c = getCharIgnoreEOL();
+
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(c))) {
+ char16_t trail;
+ uint32_t codePoint;
+ if (matchTrailForLeadSurrogate(c, &trail, &codePoint)) {
+ if (!unicode::IsIdentifierPart(codePoint))
+ break;
+
+ if (!tokenbuf.append(c) || !tokenbuf.append(trail)) {
+ userbuf.setAddressOfNextRawChar(tmp);
+ return false;
+ }
+ continue;
+ }
+ }
+
if (!unicode::IsIdentifierPart(char16_t(c))) {
if (c != '\\' || !matchUnicodeEscapeIdent(&qc))
break;
+
+ if (MOZ_UNLIKELY(unicode::IsSupplementary(qc))) {
+ char16_t lead, trail;
+ unicode::UTF16Encode(qc, &lead, &trail);
+ if (!tokenbuf.append(lead) || !tokenbuf.append(trail)) {
+ userbuf.setAddressOfNextRawChar(tmp);
+ return false;
+ }
+ continue;
+ }
+
c = qc;
}
+
if (!tokenbuf.append(c)) {
userbuf.setAddressOfNextRawChar(tmp);
return false;
@@ -1168,12 +1255,23 @@ TokenStream::getTokenInternal(TokenKind* ttp, Modifier modifier)
static_assert('_' < 128,
"IdentifierStart contains '_', but as !IsUnicodeIDStart('_'), "
"ensure that '_' is never handled here");
- if (unicode::IsUnicodeIDStart(c)) {
+ if (unicode::IsUnicodeIDStart(char16_t(c))) {
identStart = userbuf.addressOfNextRawChar() - 1;
hadUnicodeEscape = false;
goto identifier;
}
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(c))) {
+ uint32_t codePoint;
+ if (matchTrailForLeadSurrogate(c, nullptr, &codePoint) &&
+ unicode::IsUnicodeIDStart(codePoint))
+ {
+ identStart = userbuf.addressOfNextRawChar() - 2;
+ hadUnicodeEscape = false;
+ goto identifier;
+ }
+ }
+
goto badchar;
}
@@ -1224,6 +1322,17 @@ TokenStream::getTokenInternal(TokenKind* ttp, Modifier modifier)
c = getCharIgnoreEOL();
if (c == EOF)
break;
+
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(c))) {
+ uint32_t codePoint;
+ if (matchTrailForLeadSurrogate(c, nullptr, &codePoint)) {
+ if (!unicode::IsIdentifierPart(codePoint))
+ break;
+
+ continue;
+ }
+ }
+
if (!unicode::IsIdentifierPart(char16_t(c))) {
if (c != '\\' || !matchUnicodeEscapeIdent(&qc))
break;
@@ -1318,9 +1427,21 @@ TokenStream::getTokenInternal(TokenKind* ttp, Modifier modifier)
}
ungetCharIgnoreEOL(c);
- if (c != EOF && unicode::IsIdentifierStart(char16_t(c))) {
- reportError(JSMSG_IDSTART_AFTER_NUMBER);
- goto error;
+ if (c != EOF) {
+ if (unicode::IsIdentifierStart(char16_t(c))) {
+ reportError(JSMSG_IDSTART_AFTER_NUMBER);
+ goto error;
+ }
+
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(c))) {
+ uint32_t codePoint;
+ if (matchTrailForLeadSurrogate(c, nullptr, &codePoint) &&
+ unicode::IsIdentifierStart(codePoint))
+ {
+ reportError(JSMSG_IDSTART_AFTER_NUMBER);
+ goto error;
+ }
+ }
}
// Unlike identifiers and strings, numbers cannot contain escaped
@@ -1425,9 +1546,21 @@ TokenStream::getTokenInternal(TokenKind* ttp, Modifier modifier)
}
ungetCharIgnoreEOL(c);
- if (c != EOF && unicode::IsIdentifierStart(char16_t(c))) {
- reportError(JSMSG_IDSTART_AFTER_NUMBER);
- goto error;
+ if (c != EOF) {
+ if (unicode::IsIdentifierStart(char16_t(c))) {
+ reportError(JSMSG_IDSTART_AFTER_NUMBER);
+ goto error;
+ }
+
+ if (MOZ_UNLIKELY(unicode::IsLeadSurrogate(c))) {
+ uint32_t codePoint;
+ if (matchTrailForLeadSurrogate(c, nullptr, &codePoint) &&
+ unicode::IsIdentifierStart(codePoint))
+ {
+ reportError(JSMSG_IDSTART_AFTER_NUMBER);
+ goto error;
+ }
+ }
}
double dval;
diff --git a/js/src/frontend/TokenStream.h b/js/src/frontend/TokenStream.h
index 29dcead62..5d6b4b795 100644
--- a/js/src/frontend/TokenStream.h
+++ b/js/src/frontend/TokenStream.h
@@ -952,6 +952,7 @@ class MOZ_STACK_CLASS TokenStream
uint32_t peekExtendedUnicodeEscape(uint32_t* codePoint);
uint32_t matchUnicodeEscapeIdStart(uint32_t* codePoint);
bool matchUnicodeEscapeIdent(uint32_t* codePoint);
+ bool matchTrailForLeadSurrogate(char16_t lead, char16_t* trail, uint32_t* codePoint);
bool peekChars(int n, char16_t* cp);
MOZ_MUST_USE bool getDirectives(bool isMultiline, bool shouldWarnDeprecated);
diff --git a/js/src/gc/Allocator.cpp b/js/src/gc/Allocator.cpp
index 3994d5a5b..212493d86 100644
--- a/js/src/gc/Allocator.cpp
+++ b/js/src/gc/Allocator.cpp
@@ -39,8 +39,12 @@ js::Allocate(ExclusiveContext* cx, AllocKind kind, size_t nDynamicSlots, Initial
MOZ_ASSERT_IF(nDynamicSlots != 0, clasp->isNative() || clasp->isProxy());
// Off-main-thread alloc cannot trigger GC or make runtime assertions.
- if (!cx->isJSContext())
- return GCRuntime::tryNewTenuredObject<NoGC>(cx, kind, thingSize, nDynamicSlots);
+ if (!cx->isJSContext()) {
+ JSObject* obj = GCRuntime::tryNewTenuredObject<NoGC>(cx, kind, thingSize, nDynamicSlots);
+ if (MOZ_UNLIKELY(allowGC && !obj))
+ ReportOutOfMemory(cx);
+ return obj;
+ }
JSContext* ncx = cx->asJSContext();
JSRuntime* rt = ncx->runtime();
diff --git a/js/src/gdb/moz.build b/js/src/gdb/moz.build
index 07047fb74..681f9807c 100644
--- a/js/src/gdb/moz.build
+++ b/js/src/gdb/moz.build
@@ -42,7 +42,7 @@ if CONFIG['ENABLE_INTL_API'] and CONFIG['MOZ_ICU_DATA_ARCHIVE']:
OS_LIBS += CONFIG['MOZ_ZLIB_LIBS']
if CONFIG['GNU_CXX']:
- CXXFLAGS += ['-Wno-shadow']
+ CXXFLAGS += ['-Wno-shadow', '-fno-strict-aliasing']
# This is intended as a temporary workaround to enable VS2015.
if CONFIG['_MSC_VER']:
diff --git a/js/src/irregexp/RegExpCharacters-inl.h b/js/src/irregexp/RegExpCharacters-inl.h
new file mode 100644
index 000000000..d001819fc
--- /dev/null
+++ b/js/src/irregexp/RegExpCharacters-inl.h
@@ -0,0 +1,40 @@
+/* Generated by make_unicode.py DO NOT MODIFY */
+/* Unicode version: 9.0.0 */
+#ifndef V8_JSREGEXPCHARACTERS_INL_H_
+#define V8_JSREGEXPCHARACTERS_INL_H_
+
+namespace js {
+
+namespace irregexp {
+
+static inline bool
+RangeContainsLatin1Equivalents(CharacterRange range, bool unicode)
+{
+ if (unicode) {
+ // "LATIN SMALL LETTER LONG S" case folds to "LATIN SMALL LETTER S".
+ if (range.Contains(0x017F))
+ return true;
+ // "LATIN CAPITAL LETTER SHARP S" case folds to "LATIN SMALL LETTER SHARP S".
+ if (range.Contains(0x1E9E))
+ return true;
+ // "KELVIN SIGN" case folds to "LATIN SMALL LETTER K".
+ if (range.Contains(0x212A))
+ return true;
+ // "ANGSTROM SIGN" case folds to "LATIN SMALL LETTER A WITH RING ABOVE".
+ if (range.Contains(0x212B))
+ return true;
+ }
+
+ // "GREEK CAPITAL LETTER MU" case maps to "MICRO SIGN".
+ // "GREEK SMALL LETTER MU" case maps to "MICRO SIGN".
+ if (range.Contains(0x039C) || range.Contains(0x03BC))
+ return true;
+ // "LATIN CAPITAL LETTER Y WITH DIAERESIS" case maps to "LATIN SMALL LETTER Y WITH DIAERESIS".
+ if (range.Contains(0x0178))
+ return true;
+ return false;
+}
+
+} } // namespace js::irregexp
+
+#endif // V8_JSREGEXPCHARACTERS_INL_H_
diff --git a/js/src/irregexp/RegExpCharacters.cpp b/js/src/irregexp/RegExpCharacters.cpp
new file mode 100644
index 000000000..096c02760
--- /dev/null
+++ b/js/src/irregexp/RegExpCharacters.cpp
@@ -0,0 +1,135 @@
+/* Generated by make_unicode.py DO NOT MODIFY */
+/* Unicode version: 9.0.0 */
+#include "irregexp/RegExpCharacters.h"
+
+#include "mozilla/Assertions.h"
+
+char16_t
+js::irregexp::ConvertNonLatin1ToLatin1(char16_t c, bool unicode)
+{
+ MOZ_ASSERT(c > 0xFF, "Character mustn't be Latin1");
+ if (unicode) {
+ // "LATIN SMALL LETTER LONG S" case folds to "LATIN SMALL LETTER S".
+ if (c == 0x017F)
+ return 0x73;
+ // "LATIN CAPITAL LETTER SHARP S" case folds to "LATIN SMALL LETTER SHARP S".
+ if (c == 0x1E9E)
+ return 0xDF;
+ // "KELVIN SIGN" case folds to "LATIN SMALL LETTER K".
+ if (c == 0x212A)
+ return 0x6B;
+ // "ANGSTROM SIGN" case folds to "LATIN SMALL LETTER A WITH RING ABOVE".
+ if (c == 0x212B)
+ return 0xE5;
+ }
+
+ // "GREEK CAPITAL LETTER MU" case maps to "MICRO SIGN".
+ // "GREEK SMALL LETTER MU" case maps to "MICRO SIGN".
+ if (c == 0x039C || c == 0x03BC)
+ return 0xB5;
+ // "LATIN CAPITAL LETTER Y WITH DIAERESIS" case maps to "LATIN SMALL LETTER Y WITH DIAERESIS".
+ if (c == 0x0178)
+ return 0xFF;
+ return 0;
+}
+
+const int js::irregexp::kSpaceRanges[] = {
+ 0x0009, 0x000D + 1, // CHARACTER TABULATION..CARRIAGE RETURN (CR)
+ 0x0020, 0x0020 + 1, // SPACE
+ 0x00A0, 0x00A0 + 1, // NO-BREAK SPACE
+ 0x1680, 0x1680 + 1, // OGHAM SPACE MARK
+ 0x2000, 0x200A + 1, // EN QUAD..HAIR SPACE
+ 0x2028, 0x2029 + 1, // LINE SEPARATOR..PARAGRAPH SEPARATOR
+ 0x202F, 0x202F + 1, // NARROW NO-BREAK SPACE
+ 0x205F, 0x205F + 1, // MEDIUM MATHEMATICAL SPACE
+ 0x3000, 0x3000 + 1, // IDEOGRAPHIC SPACE
+ 0xFEFF, 0xFEFF + 1, // ZERO WIDTH NO-BREAK SPACE
+ 0xFFFF + 1
+};
+const int js::irregexp::kSpaceRangeCount = 21;
+
+const int js::irregexp::kSpaceAndSurrogateRanges[] = {
+ 0x0009, 0x000D + 1, // CHARACTER TABULATION..CARRIAGE RETURN (CR)
+ 0x0020, 0x0020 + 1, // SPACE
+ 0x00A0, 0x00A0 + 1, // NO-BREAK SPACE
+ 0x1680, 0x1680 + 1, // OGHAM SPACE MARK
+ 0x2000, 0x200A + 1, // EN QUAD..HAIR SPACE
+ 0x2028, 0x2029 + 1, // LINE SEPARATOR..PARAGRAPH SEPARATOR
+ 0x202F, 0x202F + 1, // NARROW NO-BREAK SPACE
+ 0x205F, 0x205F + 1, // MEDIUM MATHEMATICAL SPACE
+ 0x3000, 0x3000 + 1, // IDEOGRAPHIC SPACE
+ 0xD800, 0xDFFF + 1, // <Lead Surrogate Min>..<Trail Surrogate Max>
+ 0xFEFF, 0xFEFF + 1, // ZERO WIDTH NO-BREAK SPACE
+ 0xFFFF + 1
+};
+const int js::irregexp::kSpaceAndSurrogateRangeCount = 23;
+
+const int js::irregexp::kWordRanges[] = {
+ 0x0030, 0x0039 + 1, // DIGIT ZERO..DIGIT NINE
+ 0x0041, 0x005A + 1, // LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+ 0x005F, 0x005F + 1, // LOW LINE
+ 0x0061, 0x007A + 1, // LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+ 0xFFFF + 1
+};
+const int js::irregexp::kWordRangeCount = 9;
+
+const int js::irregexp::kIgnoreCaseWordRanges[] = {
+ 0x0030, 0x0039 + 1, // DIGIT ZERO..DIGIT NINE
+ 0x0041, 0x005A + 1, // LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+ 0x005F, 0x005F + 1, // LOW LINE
+ 0x0061, 0x007A + 1, // LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+ 0x017F, 0x017F + 1, // LATIN SMALL LETTER LONG S
+ 0x212A, 0x212A + 1, // KELVIN SIGN
+ 0xFFFF + 1
+};
+const int js::irregexp::kIgnoreCaseWordRangeCount = 13;
+
+const int js::irregexp::kWordAndSurrogateRanges[] = {
+ 0x0030, 0x0039 + 1, // DIGIT ZERO..DIGIT NINE
+ 0x0041, 0x005A + 1, // LATIN CAPITAL LETTER A..LATIN CAPITAL LETTER Z
+ 0x005F, 0x005F + 1, // LOW LINE
+ 0x0061, 0x007A + 1, // LATIN SMALL LETTER A..LATIN SMALL LETTER Z
+ 0xD800, 0xDFFF + 1, // <Lead Surrogate Min>..<Trail Surrogate Max>
+ 0xFFFF + 1
+};
+const int js::irregexp::kWordAndSurrogateRangeCount = 11;
+
+const int js::irregexp::kNegatedIgnoreCaseWordAndSurrogateRanges[] = {
+ 0x0000, 0x002F + 1, // NULL..SOLIDUS
+ 0x003A, 0x0040 + 1, // COLON..COMMERCIAL AT
+ 0x005B, 0x005E + 1, // LEFT SQUARE BRACKET..CIRCUMFLEX ACCENT
+ 0x0060, 0x0060 + 1, // GRAVE ACCENT
+ 0x007B, 0x017E + 1, // LEFT CURLY BRACKET..LATIN SMALL LETTER Z WITH CARON
+ 0x0180, 0x2129 + 1, // LATIN SMALL LETTER B WITH STROKE..TURNED GREEK SMALL LETTER IOTA
+ 0x212B, 0xD7FF + 1, // ANGSTROM SIGN..<Unused>
+ 0xE000, 0xFFFF + 1, // Private Use..<Unused>
+ 0xFFFF + 1
+};
+const int js::irregexp::kNegatedIgnoreCaseWordAndSurrogateRangeCount = 17;
+
+const int js::irregexp::kDigitRanges[] = {
+ 0x0030, 0x0039 + 1, // DIGIT ZERO..DIGIT NINE
+ 0xFFFF + 1
+};
+const int js::irregexp::kDigitRangeCount = 3;
+
+const int js::irregexp::kDigitAndSurrogateRanges[] = {
+ 0x0030, 0x0039 + 1, // DIGIT ZERO..DIGIT NINE
+ 0xD800, 0xDFFF + 1, // <Lead Surrogate Min>..<Trail Surrogate Max>
+ 0xFFFF + 1
+};
+const int js::irregexp::kDigitAndSurrogateRangeCount = 5;
+
+const int js::irregexp::kSurrogateRanges[] = {
+ 0xD800, 0xDFFF + 1, // <Lead Surrogate Min>..<Trail Surrogate Max>
+ 0xFFFF + 1
+};
+const int js::irregexp::kSurrogateRangeCount = 3;
+
+const int js::irregexp::kLineTerminatorRanges[] = {
+ 0x000A, 0x000A + 1, // LINE FEED (LF)
+ 0x000D, 0x000D + 1, // CARRIAGE RETURN (CR)
+ 0x2028, 0x2029 + 1, // LINE SEPARATOR..PARAGRAPH SEPARATOR
+ 0xFFFF + 1
+};
+const int js::irregexp::kLineTerminatorRangeCount = 7;
diff --git a/js/src/irregexp/RegExpCharacters.h b/js/src/irregexp/RegExpCharacters.h
new file mode 100644
index 000000000..0d3cf096f
--- /dev/null
+++ b/js/src/irregexp/RegExpCharacters.h
@@ -0,0 +1,90 @@
+/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 4 -*-
+ * vim: set ts=8 sts=4 et sw=4 tw=99: */
+
+// Copyright 2012 the V8 project authors. All rights reserved.
+// Redistribution and use in source and binary forms, with or without
+// modification, are permitted provided that the following conditions are
+// met:
+//
+// * Redistributions of source code must retain the above copyright
+// notice, this list of conditions and the following disclaimer.
+// * Redistributions in binary form must reproduce the above
+// copyright notice, this list of conditions and the following
+// disclaimer in the documentation and/or other materials provided
+// with the distribution.
+// * Neither the name of Google Inc. nor the names of its
+// contributors may be used to endorse or promote products derived
+// from this software without specific prior written permission.
+//
+// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+#ifndef V8_JSREGEXPCHARACTERS_H_
+#define V8_JSREGEXPCHARACTERS_H_
+
+namespace js {
+
+namespace irregexp {
+
+char16_t
+ConvertNonLatin1ToLatin1(char16_t c, bool unicode);
+
+// -------------------------------------------------------------------
+// CharacterRange
+
+// The ranges have inclusive from and exclusive to.
+
+// This covers \s as defined in ES2016, 21.2.2.12 CharacterClassEscape,
+// which includes WhiteSpace (11.2) and LineTerminator (11.3) values.
+extern const int kSpaceRanges[];
+extern const int kSpaceRangeCount;
+
+// Characters in \s and additionally all surrogate characters.
+extern const int kSpaceAndSurrogateRanges[];
+extern const int kSpaceAndSurrogateRangeCount;
+
+// This covers \w as defined in ES2016, 21.2.2.12 CharacterClassEscape.
+extern const int kWordRanges[];
+extern const int kWordRangeCount;
+
+// Characters which case-fold to characters in \w.
+extern const int kIgnoreCaseWordRanges[];
+extern const int kIgnoreCaseWordRangeCount;
+
+// Characters in \w and additionally all surrogate characters.
+extern const int kWordAndSurrogateRanges[];
+extern const int kWordAndSurrogateRangeCount;
+
+// All characters excluding those which case-fold to \w and excluding all
+// surrogate characters.
+extern const int kNegatedIgnoreCaseWordAndSurrogateRanges[];
+extern const int kNegatedIgnoreCaseWordAndSurrogateRangeCount;
+
+// This covers \d as defined in ES2016, 21.2.2.12 CharacterClassEscape.
+extern const int kDigitRanges[];
+extern const int kDigitRangeCount;
+
+// Characters in \d and additionally all surrogate characters.
+extern const int kDigitAndSurrogateRanges[];
+extern const int kDigitAndSurrogateRangeCount;
+
+// The range of all surrogate characters.
+extern const int kSurrogateRanges[];
+extern const int kSurrogateRangeCount;
+
+// Line terminators as defined in ES2016, 11.3 LineTerminator.
+extern const int kLineTerminatorRanges[];
+extern const int kLineTerminatorRangeCount;
+
+} } // namespace js::irregexp
+
+#endif // V8_JSREGEXPCHARACTERS_H_
diff --git a/js/src/irregexp/RegExpEngine.cpp b/js/src/irregexp/RegExpEngine.cpp
index 2e19065fd..4d691a5dc 100644
--- a/js/src/irregexp/RegExpEngine.cpp
+++ b/js/src/irregexp/RegExpEngine.cpp
@@ -31,10 +31,14 @@
#include "irregexp/RegExpEngine.h"
#include "irregexp/NativeRegExpMacroAssembler.h"
+#include "irregexp/RegExpCharacters.h"
#include "irregexp/RegExpMacroAssembler.h"
#include "jit/ExecutableAllocator.h"
#include "jit/JitCommon.h"
+// Generated table
+#include "irregexp/RegExpCharacters-inl.h"
+
using namespace js;
using namespace js::irregexp;
@@ -61,61 +65,6 @@ RegExpNode::RegExpNode(LifoAlloc* alloc)
bm_info_[0] = bm_info_[1] = nullptr;
}
-// -------------------------------------------------------------------
-// CharacterRange
-
-// The '2' variant has inclusive from and exclusive to.
-// This covers \s as defined in ECMA-262 5.1, 15.10.2.12,
-// which include WhiteSpace (7.2) or LineTerminator (7.3) values.
-static const int kSpaceRanges[] = { '\t', '\r' + 1, ' ', ' ' + 1,
- 0x00A0, 0x00A1, 0x1680, 0x1681, 0x180E, 0x180F, 0x2000, 0x200B,
- 0x2028, 0x202A, 0x202F, 0x2030, 0x205F, 0x2060, 0x3000, 0x3001,
- 0xFEFF, 0xFF00, 0x10000 };
-static const int kSpaceRangeCount = ArrayLength(kSpaceRanges);
-
-static const int kSpaceAndSurrogateRanges[] = { '\t', '\r' + 1, ' ', ' ' + 1,
- 0x00A0, 0x00A1, 0x1680, 0x1681, 0x180E, 0x180F, 0x2000, 0x200B,
- 0x2028, 0x202A, 0x202F, 0x2030, 0x205F, 0x2060, 0x3000, 0x3001,
- unicode::LeadSurrogateMin, unicode::TrailSurrogateMax + 1,
- 0xFEFF, 0xFF00, 0x10000 };
-static const int kSpaceAndSurrogateRangeCount = ArrayLength(kSpaceAndSurrogateRanges);
-static const int kWordRanges[] = {
- '0', '9' + 1, 'A', 'Z' + 1, '_', '_' + 1, 'a', 'z' + 1, 0x10000 };
-static const int kWordRangeCount = ArrayLength(kWordRanges);
-static const int kIgnoreCaseWordRanges[] = {
- '0', '9' + 1, 'A', 'Z' + 1, '_', '_' + 1, 'a', 'z' + 1,
- 0x017F, 0x017F + 1, 0x212A, 0x212A + 1,
- 0x10000 };
-static const int kIgnoreCaseWordCount = ArrayLength(kIgnoreCaseWordRanges);
-static const int kWordAndSurrogateRanges[] = {
- '0', '9' + 1, 'A', 'Z' + 1, '_', '_' + 1, 'a', 'z' + 1,
- unicode::LeadSurrogateMin, unicode::TrailSurrogateMax + 1,
- 0x10000 };
-static const int kWordAndSurrogateRangeCount = ArrayLength(kWordAndSurrogateRanges);
-static const int kNegatedIgnoreCaseWordAndSurrogateRanges[] = {
- 0, '0', '9' + 1, 'A',
- 'Z' + 1, '_', '_' + 1, 'a',
- 'z' + 1, 0x017F,
- 0x017F + 1, 0x212A,
- 0x212A + 1, unicode::LeadSurrogateMin,
- unicode::TrailSurrogateMax + 1, 0x10000,
- 0x10000 };
-static const int kNegatedIgnoreCaseWordAndSurrogateRangeCount =
- ArrayLength(kNegatedIgnoreCaseWordAndSurrogateRanges);
-static const int kDigitRanges[] = { '0', '9' + 1, 0x10000 };
-static const int kDigitRangeCount = ArrayLength(kDigitRanges);
-static const int kDigitAndSurrogateRanges[] = {
- '0', '9' + 1,
- unicode::LeadSurrogateMin, unicode::TrailSurrogateMax + 1,
- 0x10000 };
-static const int kDigitAndSurrogateRangeCount = ArrayLength(kDigitAndSurrogateRanges);
-static const int kSurrogateRanges[] = {
- unicode::LeadSurrogateMin, unicode::TrailSurrogateMax + 1,
- 0x10000 };
-static const int kSurrogateRangeCount = ArrayLength(kSurrogateRanges);
-static const int kLineTerminatorRanges[] = { 0x000A, 0x000B, 0x000D, 0x000E,
- 0x2028, 0x202A, 0x10000 };
-static const int kLineTerminatorRangeCount = ArrayLength(kLineTerminatorRanges);
static const int kMaxOneByteCharCode = 0xff;
static const int kMaxUtf16CodeUnit = 0xffff;
@@ -213,7 +162,7 @@ CharacterRange::AddClassEscapeUnicode(LifoAlloc* alloc, char16_t type,
break;
case 'w':
if (ignore_case)
- AddClass(kIgnoreCaseWordRanges, kIgnoreCaseWordCount, ranges);
+ AddClass(kIgnoreCaseWordRanges, kIgnoreCaseWordRangeCount, ranges);
else
AddClassEscape(alloc, type, ranges);
break;
@@ -233,33 +182,6 @@ CharacterRange::AddClassEscapeUnicode(LifoAlloc* alloc, char16_t type,
}
}
-#define FOR_EACH_NON_ASCII_TO_ASCII_FOLDING(macro) \
- /* LATIN CAPITAL LETTER Y WITH DIAERESIS */ \
- macro(0x0178, 0x00FF) \
- /* LATIN SMALL LETTER LONG S */ \
- macro(0x017F, 0x0073) \
- /* LATIN CAPITAL LETTER SHARP S */ \
- macro(0x1E9E, 0x00DF) \
- /* KELVIN SIGN */ \
- macro(0x212A, 0x006B) \
- /* ANGSTROM SIGN */ \
- macro(0x212B, 0x00E5)
-
-// We need to check for the following characters: 0x39c 0x3bc 0x178.
-static inline bool
-RangeContainsLatin1Equivalents(CharacterRange range, bool unicode)
-{
- /* TODO(dcarney): this could be a lot more efficient. */
- if (unicode) {
-#define CHECK_RANGE(C, F) \
- if (range.Contains(C)) return true;
-FOR_EACH_NON_ASCII_TO_ASCII_FOLDING(CHECK_RANGE)
-#undef CHECK_RANGE
- }
-
- return range.Contains(0x39c) || range.Contains(0x3bc) || range.Contains(0x178);
-}
-
static bool
RangesContainLatin1Equivalents(const CharacterRangeVector& ranges, bool unicode)
{
@@ -336,7 +258,7 @@ GetCaseIndependentLetters(char16_t character,
// step 3.g.
// The standard requires that non-ASCII characters cannot have ASCII
// character codes in their equivalence class, even though this
- // situation occurs multiple times in the unicode tables.
+ // situation occurs multiple times in the Unicode tables.
static const unsigned kMaxAsciiCharCode = 127;
if (upper <= kMaxAsciiCharCode) {
if (character > kMaxAsciiCharCode) {
@@ -365,31 +287,6 @@ GetCaseIndependentLetters(char16_t character,
choices, ArrayLength(choices), letters);
}
-static char16_t
-ConvertNonLatin1ToLatin1(char16_t c, bool unicode)
-{
- MOZ_ASSERT(c > kMaxOneByteCharCode);
- if (unicode) {
- switch (c) {
-#define CONVERT(C, F) case C: return F;
-FOR_EACH_NON_ASCII_TO_ASCII_FOLDING(CONVERT)
-#undef CONVERT
- }
- }
-
- switch (c) {
- // This are equivalent characters in unicode.
- case 0x39c:
- case 0x3bc:
- return 0xb5;
- // This is an uppercase of a Latin-1 character
- // outside of Latin-1.
- case 0x178:
- return 0xff;
- }
- return 0;
-}
-
void
CharacterRange::AddCaseEquivalents(bool is_ascii, bool unicode, CharacterRangeVector* ranges)
{
@@ -2358,7 +2255,10 @@ void
BoyerMoorePositionInfo::SetInterval(const Interval& interval)
{
s_ = AddRange(s_, kSpaceRanges, kSpaceRangeCount, interval);
- w_ = AddRange(w_, kWordRanges, kWordRangeCount, interval);
+ if (unicode_ignore_case_)
+ w_ = AddRange(w_, kIgnoreCaseWordRanges, kIgnoreCaseWordRangeCount, interval);
+ else
+ w_ = AddRange(w_, kWordRanges, kWordRangeCount, interval);
d_ = AddRange(d_, kDigitRanges, kDigitRangeCount, interval);
surrogate_ =
AddRange(surrogate_, kSurrogateRanges, kSurrogateRangeCount, interval);
@@ -2395,11 +2295,12 @@ BoyerMoorePositionInfo::SetAll()
BoyerMooreLookahead::BoyerMooreLookahead(LifoAlloc* alloc, size_t length, RegExpCompiler* compiler)
: length_(length), compiler_(compiler), bitmaps_(*alloc)
{
+ bool unicode_ignore_case = compiler->unicode() && compiler->ignore_case();
max_char_ = MaximumCharacter(compiler->ascii());
bitmaps_.reserve(length);
for (size_t i = 0; i < length; i++)
- bitmaps_.append(alloc->newInfallible<BoyerMoorePositionInfo>(alloc));
+ bitmaps_.append(alloc->newInfallible<BoyerMoorePositionInfo>(alloc, unicode_ignore_case));
}
// Find the longest range of lookahead that has the fewest number of different
@@ -3065,15 +2966,22 @@ EmitNotInSurrogatePair(RegExpCompiler* compiler, RegExpNode* on_success, Trace*
// Check for [0-9A-Z_a-z].
static void
EmitWordCheck(RegExpMacroAssembler* assembler,
- jit::Label* word, jit::Label* non_word, bool fall_through_on_word)
+ jit::Label* word, jit::Label* non_word, bool fall_through_on_word,
+ bool unicode_ignore_case)
{
- if (assembler->CheckSpecialCharacterClass(fall_through_on_word ? 'w' : 'W',
+ if (!unicode_ignore_case &&
+ assembler->CheckSpecialCharacterClass(fall_through_on_word ? 'w' : 'W',
fall_through_on_word ? non_word : word))
{
// Optimized implementation available.
return;
}
+ if (unicode_ignore_case) {
+ assembler->CheckCharacter(0x017F, word);
+ assembler->CheckCharacter(0x212A, word);
+ }
+
assembler->CheckCharacterGT('z', non_word);
assembler->CheckCharacterLT('0', non_word);
assembler->CheckCharacterGT('a' - 1, word);
@@ -3122,7 +3030,8 @@ AssertionNode::EmitBoundaryCheck(RegExpCompiler* compiler, Trace* trace)
assembler->LoadCurrentCharacter(trace->cp_offset(), &before_non_word);
}
// Fall through on non-word.
- EmitWordCheck(assembler, &before_word, &before_non_word, false);
+ EmitWordCheck(assembler, &before_word, &before_non_word, false,
+ compiler->unicode() && compiler->ignore_case());
// Next character is not a word character.
assembler->Bind(&before_non_word);
jit::Label ok;
@@ -3162,7 +3071,8 @@ AssertionNode::BacktrackIfPrevious(RegExpCompiler* compiler,
// We already checked that we are not at the start of input so it must be
// OK to load the previous character.
assembler->LoadCurrentCharacter(new_trace.cp_offset() - 1, &dummy, false);
- EmitWordCheck(assembler, word, non_word, backtrack_if_previous == kIsNonWord);
+ EmitWordCheck(assembler, word, non_word, backtrack_if_previous == kIsNonWord,
+ compiler->unicode() && compiler->ignore_case());
assembler->Bind(&fall_through);
on_success()->Emit(compiler, &new_trace);
diff --git a/js/src/irregexp/RegExpEngine.h b/js/src/irregexp/RegExpEngine.h
index 78c784aaf..1a8fd4b22 100644
--- a/js/src/irregexp/RegExpEngine.h
+++ b/js/src/irregexp/RegExpEngine.h
@@ -1195,13 +1195,14 @@ AddRange(ContainedInLattice a,
class BoyerMoorePositionInfo
{
public:
- explicit BoyerMoorePositionInfo(LifoAlloc* alloc)
+ explicit BoyerMoorePositionInfo(LifoAlloc* alloc, bool unicode_ignore_case)
: map_(*alloc),
map_count_(0),
w_(kNotYet),
s_(kNotYet),
d_(kNotYet),
- surrogate_(kNotYet)
+ surrogate_(kNotYet),
+ unicode_ignore_case_(unicode_ignore_case)
{
map_.reserve(kMapSize);
for (int i = 0; i < kMapSize; i++)
@@ -1228,6 +1229,9 @@ class BoyerMoorePositionInfo
ContainedInLattice s_; // The \s character class.
ContainedInLattice d_; // The \d character class.
ContainedInLattice surrogate_; // Surrogate UTF-16 code units.
+
+ // True if the RegExp has unicode and ignoreCase flags.
+ bool unicode_ignore_case_;
};
typedef InfallibleVector<BoyerMoorePositionInfo*, 1> BoyerMoorePositionInfoVector;
diff --git a/js/src/jit-test/tests/auto-regress/for-of-iterator-close-debugger.js b/js/src/jit-test/tests/auto-regress/for-of-iterator-close-debugger.js
new file mode 100644
index 000000000..a4d0bf654
--- /dev/null
+++ b/js/src/jit-test/tests/auto-regress/for-of-iterator-close-debugger.js
@@ -0,0 +1,15 @@
+// |jit-test| error:ReferenceError
+
+// for-of should close iterator even if the exception is once caught by the
+// debugger.
+
+var g = newGlobal();
+g.parent = this;
+g.eval("new Debugger(parent).onExceptionUnwind = function () { };");
+// jsfunfuzz-generated
+for (var x of []) {};
+for (var l of [0]) {
+ for (var y = 0; y < 1; y++) {
+ g2;
+ }
+}
diff --git a/js/src/jit-test/tests/basic/constructor-name.js b/js/src/jit-test/tests/basic/constructor-name.js
index 4bc6a61ea..2dd4c073f 100644
--- a/js/src/jit-test/tests/basic/constructor-name.js
+++ b/js/src/jit-test/tests/basic/constructor-name.js
@@ -17,7 +17,7 @@ function makeObject() {
let tests = [
{ name: "Ctor", object: new Ctor },
{ name: "nested.Ctor", object: new nested.Ctor },
- { name: "makeInstance/LexicalCtor", object: makeInstance() },
+ { name: "LexicalCtor", object: makeInstance() },
{ name: null, object: {} },
{ name: null, object: nested.object },
{ name: null, object: makeObject() },
diff --git a/js/src/jit-test/tests/basic/destructuring-default.js b/js/src/jit-test/tests/basic/destructuring-default.js
index 168977e80..49a908b8a 100644
--- a/js/src/jit-test/tests/basic/destructuring-default.js
+++ b/js/src/jit-test/tests/basic/destructuring-default.js
@@ -84,10 +84,7 @@ function testArgumentFunction(pattern, input) {
'return [a, b, c, d, e, f];'
)(input);
}
-// XXX: ES6 requires the `Function` constructor to accept arbitrary
-// `BindingElement`s as formal parameters. See Bug 1037939.
-// Once fixed, please update the assertions below.
-assertThrowsInstanceOf(() => testAll(testArgumentFunction), SyntaxError);
+testAll(testArgumentFunction);
function testThrow(pattern, input) {
return new Function('input',
diff --git a/js/src/jit-test/tests/basic/destructuring-rest.js b/js/src/jit-test/tests/basic/destructuring-rest.js
index f53f07e03..fcb7b79bb 100644
--- a/js/src/jit-test/tests/basic/destructuring-rest.js
+++ b/js/src/jit-test/tests/basic/destructuring-rest.js
@@ -132,10 +132,9 @@ function testArgumentFunction(pattern, input, binding) {
'return ' + binding
)(input);
}
-// XXX: ES6 requires the `Function` constructor to accept arbitrary
-// `BindingElement`s as formal parameters. See Bug 1037939.
-// Once fixed, please update the assertions below.
-assertThrowsInstanceOf(() => testDeclaration(testArgumentFunction), SyntaxError);
+// ES6 requires the `Function` constructor to accept arbitrary
+// `BindingElement`s as formal parameters.
+testDeclaration(testArgumentFunction);
function testThrow(pattern, input, binding) {
binding = binding || 'rest';
diff --git a/js/src/jit-test/tests/basic/functionnames.js b/js/src/jit-test/tests/basic/functionnames.js
index 935292ee3..7fef872fc 100644
--- a/js/src/jit-test/tests/basic/functionnames.js
+++ b/js/src/jit-test/tests/basic/functionnames.js
@@ -40,7 +40,7 @@ assertName(Foo, 'Foo</<');
/* various properties and such */
var x = {fox: { bax: function(){} } };
-assertName(x.fox.bax, 'x.fox.bax');
+assertName(x.fox.bax, 'bax');
var foo = {foo: {foo: {}}};
foo.foo.foo = function(){};
assertName(foo.foo.foo, 'foo.foo.foo');
@@ -48,20 +48,20 @@ var z = {
foz: function() {
var baz = function() {
var y = {bay: function() {}};
- assertName(y.bay, 'z.foz/baz/y.bay');
+ assertName(y.bay, 'bay');
};
- assertName(baz, 'z.foz/baz');
+ assertName(baz, 'baz');
baz();
}
};
-assertName(z.foz, 'z.foz');
+assertName(z.foz, 'foz');
z.foz();
var outer = function() {
x.fox.bax.nx = function(){};
var w = {fow: { baw: function(){} } };
assertName(x.fox.bax.nx, 'outer/x.fox.bax.nx')
- assertName(w.fow.baw, 'outer/w.fow.baw');
+ assertName(w.fow.baw, 'baw');
};
assertName(outer, 'outer');
outer();
@@ -69,7 +69,7 @@ function Fuz(){};
Fuz.prototype = {
add: function() {}
}
-assertName(Fuz.prototype.add, 'Fuz.prototype.add');
+assertName(Fuz.prototype.add, 'add');
var x = 1;
x = function(){};
@@ -94,7 +94,7 @@ a.b = function() {
assertName(arguments.callee, 'a.b<');
return { a: function() {} }
}();
-assertName(a.b.a, 'a.b</<.a');
+assertName(a.b.a, 'a');
a = {
b: function(a) {
@@ -104,9 +104,9 @@ a = {
return function() {};
}
};
-assertName(a.b, 'a.b');
-assertName(a.b(true), 'a.b/<')
-assertName(a.b(false), 'a.b/<')
+assertName(a.b, 'b');
+assertName(a.b(true), 'b/<')
+assertName(a.b(false), 'b/<')
function f(g) {
assertName(g, 'x<');
@@ -116,7 +116,7 @@ var x = f(function () { return function() {}; });
assertName(x, 'x</<');
var a = {'b': function(){}};
-assertName(a.b, 'a.b');
+assertName(a.b, 'b');
function g(f) {
assertName(f, '');
@@ -138,15 +138,15 @@ a = {
"\"\'quotes\'\"": function(){},
"!@#$%": function(){}
};
-assertName(a["embedded spaces"], 'a["embedded spaces"]');
-assertName(a["dots.look.like.property.references"], 'a["dots.look.like.property.references"]');
-assertName(a["\"\'quotes\'\""], 'a["\\\"\'quotes\'\\\""]');
-assertName(a["!@#$%"], 'a["!@#$%"]');
+assertName(a["embedded spaces"], 'embedded spaces');
+assertName(a["dots.look.like.property.references"], 'dots.look.like.property.references');
+assertName(a["\"\'quotes\'\""], '"\'quotes\'"');
+assertName(a["!@#$%"], '!@#$%');
a.b = {};
a.b.c = {};
a.b["c"]["d e"] = { f: { 1: { "g": { "h i": function() {} } } } };
-assertName(a.b.c["d e"].f[1].g["h i"], 'a.b.c["d e"].f[1].g["h i"]');
+assertName(a.b.c["d e"].f[1].g["h i"], 'h i');
this.m = function () {};
assertName(m, "this.m");
diff --git a/js/src/jit-test/tests/basic/regexpLastIndexReset.js b/js/src/jit-test/tests/basic/regexpLastIndexReset.js
index 2a54d8ef5..dbe3c3b76 100644
--- a/js/src/jit-test/tests/basic/regexpLastIndexReset.js
+++ b/js/src/jit-test/tests/basic/regexpLastIndexReset.js
@@ -7,7 +7,7 @@ function test() {
pattern.lastIndex = 3;
var result = pattern.exec(string);
assertEq(result, null);
- assertEq(pattern.lastIndex, 0);
+ assertEq(pattern.lastIndex, 3);
}
for (let i = 0; i < 10; i++) {
@@ -18,7 +18,7 @@ function test2() {
pattern.lastIndex = 3;
var result = pattern.test(string);
assertEq(result, false);
- assertEq(pattern.lastIndex, 0);
+ assertEq(pattern.lastIndex, 3);
}
for (let i = 0; i < 10; i++) {
diff --git a/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-16.js b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-16.js
index b147d6ded..5c73a1ad3 100644
--- a/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-16.js
+++ b/js/src/jit-test/tests/debug/Memory-drainAllocationsLog-16.js
@@ -24,7 +24,7 @@ root.eval(
this.tests = [
{ name: "Ctor", fn: () => new Ctor },
{ name: "nested.Ctor", fn: () => new nested.Ctor },
- { name: "makeInstance/LexicalCtor", fn: () => makeInstance() },
+ { name: "LexicalCtor", fn: () => makeInstance() },
{ name: null, fn: () => ({}) },
{ name: null, fn: () => (nested.object = {}) },
{ name: null, fn: () => makeObject() },
diff --git a/js/src/jit-test/tests/debug/Script-gc-02.js b/js/src/jit-test/tests/debug/Script-gc-02.js
index 33d33dfc1..04dd4b220 100644
--- a/js/src/jit-test/tests/debug/Script-gc-02.js
+++ b/js/src/jit-test/tests/debug/Script-gc-02.js
@@ -10,5 +10,5 @@ assertEq(arr.length, 10);
gc();
for (var i = 0; i < arr.length; i++)
- assertEq(arr[i].lineCount, 1);
+ assertEq(arr[i].lineCount, 3);
diff --git a/js/src/jit-test/tests/debug/Script-gc-03.js b/js/src/jit-test/tests/debug/Script-gc-03.js
index b2cb70232..30c3e8dbc 100644
--- a/js/src/jit-test/tests/debug/Script-gc-03.js
+++ b/js/src/jit-test/tests/debug/Script-gc-03.js
@@ -10,6 +10,6 @@ assertEq(arr.length, 100);
gc(g);
for (var i = 0; i < arr.length; i++)
- assertEq(arr[i].lineCount, 1);
+ assertEq(arr[i].lineCount, 3);
gc();
diff --git a/js/src/jit-test/tests/debug/Script-sourceStart-04.js b/js/src/jit-test/tests/debug/Script-sourceStart-04.js
index c12e669bf..2aa382b7b 100644
--- a/js/src/jit-test/tests/debug/Script-sourceStart-04.js
+++ b/js/src/jit-test/tests/debug/Script-sourceStart-04.js
@@ -20,6 +20,6 @@ function test(string, range) {
}
test("eval('2 * 3')", [0, 5]);
-test("new Function('2 * 3')", [0, 5]);
-test("new Function('x', 'x * x')", [0, 5]);
+test("new Function('2 * 3')", [0, 12]);
+test("new Function('x', 'x * x')", [0, 13]);
assertEq(count, 6);
diff --git a/js/src/jit-test/tests/for-of/bug-1331444.js b/js/src/jit-test/tests/for-of/bug-1331444.js
new file mode 100644
index 000000000..9770c584b
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/bug-1331444.js
@@ -0,0 +1,7 @@
+// |jit-test| error: ReferenceError
+
+symbols = [Symbol];
+for (comparator of[, ])
+ for (a of symbols)
+ for (;;)
+ expect;
diff --git a/js/src/jit-test/tests/for-of/bug-1341339.js b/js/src/jit-test/tests/for-of/bug-1341339.js
new file mode 100644
index 000000000..1f88acdaf
--- /dev/null
+++ b/js/src/jit-test/tests/for-of/bug-1341339.js
@@ -0,0 +1,9 @@
+let m = parseModule(`
+function* values() {}
+var iterator = values();
+for (var i=0; i < 10000; ++i) {
+ for (var x of iterator) {}
+}
+`);
+m.declarationInstantiation();
+m.evaluation();
diff --git a/js/src/jit-test/tests/gc/bug-1323868.js b/js/src/jit-test/tests/gc/bug-1323868.js
new file mode 100644
index 000000000..c7e8c9b08
--- /dev/null
+++ b/js/src/jit-test/tests/gc/bug-1323868.js
@@ -0,0 +1,5 @@
+if (helperThreadCount() == 0)
+ quit();
+startgc(8301);
+offThreadCompileScript("(({a,b,c}))");
+gcparam("maxBytes", gcparam("gcBytes"));
diff --git a/js/src/jit-test/tests/ion/bug1333946.js b/js/src/jit-test/tests/ion/bug1333946.js
new file mode 100644
index 000000000..1fa1b9c49
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1333946.js
@@ -0,0 +1,8 @@
+// |jit-test| error: 42;
+
+for (var x of [0]) {
+ for (var i = 0; ; i++) {
+ if (i === 20000)
+ throw 42;
+ }
+}
diff --git a/js/src/jit-test/tests/ion/bug1334314.js b/js/src/jit-test/tests/ion/bug1334314.js
new file mode 100644
index 000000000..488fc9027
--- /dev/null
+++ b/js/src/jit-test/tests/ion/bug1334314.js
@@ -0,0 +1,16 @@
+// |jit-test| error: TypeError
+
+var g = newGlobal();
+g.parent = this;
+g.eval("new Debugger(parent).onExceptionUnwind = function () { };");
+
+function f() {
+ [[]] = [];
+}
+try {
+ f();
+} catch (e) {};
+try {
+ f();
+} catch (e) {};
+f();
diff --git a/js/src/jit-test/tests/parser/bug-1357075.js b/js/src/jit-test/tests/parser/bug-1357075.js
new file mode 100644
index 000000000..47482e372
--- /dev/null
+++ b/js/src/jit-test/tests/parser/bug-1357075.js
@@ -0,0 +1,10 @@
+// |jit-test| error: TypeError
+
+var iterable = {};
+var iterator = {
+ return: 1
+};
+iterable[Symbol.iterator] = function() {
+ return iterator;
+};
+for ([ class get {} ().iterator ] of [iterable]) {}
diff --git a/js/src/jit-test/tests/proxy/testWrapWithProtoIter.js b/js/src/jit-test/tests/proxy/testWrapWithProtoIter.js
new file mode 100644
index 000000000..c6854b206
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testWrapWithProtoIter.js
@@ -0,0 +1 @@
+[...wrapWithProto(new Int8Array(), new Int8Array())]
diff --git a/js/src/jit-test/tests/proxy/testWrapWithProtoTypedArray.js b/js/src/jit-test/tests/proxy/testWrapWithProtoTypedArray.js
new file mode 100644
index 000000000..1b805d30a
--- /dev/null
+++ b/js/src/jit-test/tests/proxy/testWrapWithProtoTypedArray.js
@@ -0,0 +1,19 @@
+let a = wrapWithProto(new Int8Array([1, 3, 5, 6, 9]), new Int8Array());
+
+assertEq([...a].toString(), "1,3,5,6,9");
+assertEq(a.every(e => e < 100), true);
+assertEq(a.filter(e => e % 2 == 1).toString(), "1,3,5,9");
+assertEq(a.find(e => e > 3), 5);
+assertEq(a.findIndex(e => e % 2 == 0), 3);
+assertEq(a.map(e => e * 10).toString(), "10,30,50,60,90");
+assertEq(a.reduce((a, b) => a + b, ""), "13569");
+assertEq(a.reduceRight((acc, e) => "(" + e + acc + ")", ""), "(1(3(5(6(9)))))");
+assertEq(a.some(e => e % 2 == 0), true);
+
+let s = "";
+assertEq(a.forEach(e => s += e), undefined);
+assertEq(s, "13569");
+
+a.sort((a, b) => b - a);
+assertEq(a.toString(), "9,6,5,3,1");
+
diff --git a/js/src/jit-test/tests/saved-stacks/function-display-name.js b/js/src/jit-test/tests/saved-stacks/function-display-name.js
index cfe175758..f10b7de6b 100644
--- a/js/src/jit-test/tests/saved-stacks/function-display-name.js
+++ b/js/src/jit-test/tests/saved-stacks/function-display-name.js
@@ -2,9 +2,8 @@
function uno() { return dos(); }
const dos = () => tres.quattro();
-const tres = {
- quattro: () => saveStack()
-};
+let tres = {};
+tres.quattro = () => saveStack()
const frame = uno();
diff --git a/js/src/jit-test/tests/self-test/assertDeepEq.js b/js/src/jit-test/tests/self-test/assertDeepEq.js
index b2a949abc..9c1b37e8e 100644
--- a/js/src/jit-test/tests/self-test/assertDeepEq.js
+++ b/js/src/jit-test/tests/self-test/assertDeepEq.js
@@ -77,7 +77,8 @@ assertDeepEq(q, p);
assertNotDeepEq(() => 1, () => 2);
assertNotDeepEq((...x) => 1, x => 1);
assertNotDeepEq(function f(){}, function g(){});
-var f1 = function () {}, f2 = function () {};
+// Avoid setting name property.
+var [f1, f2] = [function () {}, function () {}];
assertDeepEq(f1, f1);
assertDeepEq(f1, f2); // same text, close enough
f1.prop = 1;
diff --git a/js/src/jit/BaselineBailouts.cpp b/js/src/jit/BaselineBailouts.cpp
index 8fc8a522d..3ab722b3d 100644
--- a/js/src/jit/BaselineBailouts.cpp
+++ b/js/src/jit/BaselineBailouts.cpp
@@ -487,7 +487,7 @@ GetNextNonLoopEntryPc(jsbytecode* pc)
}
static bool
-HasLiveIteratorAtStackDepth(JSScript* script, jsbytecode* pc, uint32_t stackDepth)
+HasLiveStackValueAtDepth(JSScript* script, jsbytecode* pc, uint32_t stackDepth)
{
if (!script->hasTrynotes())
return false;
@@ -501,14 +501,31 @@ HasLiveIteratorAtStackDepth(JSScript* script, jsbytecode* pc, uint32_t stackDept
if (pcOffset >= tn->start + tn->length)
continue;
- // For-in loops have only the iterator on stack.
- if (tn->kind == JSTRY_FOR_IN && stackDepth == tn->stackDepth)
- return true;
+ switch (tn->kind) {
+ case JSTRY_FOR_IN:
+ // For-in loops have only the iterator on stack.
+ if (stackDepth == tn->stackDepth)
+ return true;
+ break;
+
+ case JSTRY_FOR_OF:
+ // For-of loops have the iterator, the result object, and the value
+ // of the result object on stack. The iterator is below the result
+ // object and the value.
+ if (stackDepth == tn->stackDepth - 2)
+ return true;
+ break;
+
+ case JSTRY_DESTRUCTURING_ITERCLOSE:
+ // Destructuring code that need to call IteratorClose have both
+ // the iterator and the "done" value on the stack.
+ if (stackDepth == tn->stackDepth || stackDepth == tn->stackDepth - 1)
+ return true;
+ break;
- // For-of loops have both the iterator and the result object on
- // stack. The iterator is below the result object.
- if (tn->kind == JSTRY_FOR_OF && stackDepth == tn->stackDepth - 1)
- return true;
+ default:
+ break;
+ }
}
return false;
@@ -945,7 +962,7 @@ InitFromBailout(JSContext* cx, HandleScript caller, jsbytecode* callerPC,
// iterators, however, so read them out. They will be closed by
// HandleExceptionBaseline.
MOZ_ASSERT(cx->compartment()->isDebuggee());
- if (iter.moreFrames() || HasLiveIteratorAtStackDepth(script, pc, i + 1)) {
+ if (iter.moreFrames() || HasLiveStackValueAtDepth(script, pc, i + 1)) {
v = iter.read();
} else {
iter.skip();
diff --git a/js/src/jit/BaselineCompiler.cpp b/js/src/jit/BaselineCompiler.cpp
index c58367aa3..3fa5a80ed 100644
--- a/js/src/jit/BaselineCompiler.cpp
+++ b/js/src/jit/BaselineCompiler.cpp
@@ -9,6 +9,8 @@
#include "mozilla/Casting.h"
#include "mozilla/SizePrintfMacros.h"
+#include "jsfun.h"
+
#include "jit/BaselineIC.h"
#include "jit/BaselineJIT.h"
#include "jit/FixedList.h"
@@ -1061,6 +1063,12 @@ BaselineCompiler::emit_JSOP_NOP_DESTRUCTURING()
}
bool
+BaselineCompiler::emit_JSOP_TRY_DESTRUCTURING_ITERCLOSE()
+{
+ return true;
+}
+
+bool
BaselineCompiler::emit_JSOP_LABEL()
{
return true;
@@ -1145,7 +1153,7 @@ BaselineCompiler::emit_JSOP_PICK()
// after : A B D E C
// First, move value at -(amount + 1) into R0.
- int depth = -(GET_INT8(pc) + 1);
+ int32_t depth = -(GET_INT8(pc) + 1);
masm.loadValue(frame.addressOfStackValue(frame.peek(depth)), R0);
// Move the other values down.
@@ -1164,6 +1172,34 @@ BaselineCompiler::emit_JSOP_PICK()
}
bool
+BaselineCompiler::emit_JSOP_UNPICK()
+{
+ frame.syncStack(0);
+
+ // Pick takes the top of the stack value and moves it under the nth value.
+ // For instance, unpick 2:
+ // before: A B C D E
+ // after : A B E C D
+
+ // First, move value at -1 into R0.
+ masm.loadValue(frame.addressOfStackValue(frame.peek(-1)), R0);
+
+ // Move the other values up.
+ int32_t depth = -(GET_INT8(pc) + 1);
+ for (int32_t i = -1; i > depth; i--) {
+ Address source = frame.addressOfStackValue(frame.peek(i - 1));
+ Address dest = frame.addressOfStackValue(frame.peek(i));
+ masm.loadValue(source, R1);
+ masm.storeValue(R1, dest);
+ }
+
+ // Store R0 under the nth value.
+ Address dest = frame.addressOfStackValue(frame.peek(depth));
+ masm.storeValue(R0, dest);
+ return true;
+}
+
+bool
BaselineCompiler::emit_JSOP_GOTO()
{
frame.syncStack(0);
@@ -1351,6 +1387,26 @@ BaselineCompiler::emit_JSOP_CHECKISOBJ()
return true;
}
+typedef bool (*CheckIsCallableFn)(JSContext*, HandleValue, CheckIsCallableKind);
+static const VMFunction CheckIsCallableInfo =
+ FunctionInfo<CheckIsCallableFn>(CheckIsCallable, "CheckIsCallable");
+
+bool
+BaselineCompiler::emit_JSOP_CHECKISCALLABLE()
+{
+ frame.syncStack(0);
+ masm.loadValue(frame.addressOfStackValue(frame.peek(-1)), R0);
+
+ prepareVMCall();
+
+ pushArg(Imm32(GET_UINT8(pc)));
+ pushArg(R0);
+ if (!callVM(CheckIsCallableInfo))
+ return false;
+
+ return true;
+}
+
typedef bool (*ThrowUninitializedThisFn)(JSContext*, BaselineFrame* frame);
static const VMFunction ThrowUninitializedThisInfo =
FunctionInfo<ThrowUninitializedThisFn>(BaselineThrowUninitializedThis,
@@ -1681,6 +1737,29 @@ BaselineCompiler::emit_JSOP_LAMBDA_ARROW()
return true;
}
+typedef bool (*SetFunNameFn)(JSContext*, HandleFunction, HandleValue, FunctionPrefixKind);
+static const VMFunction SetFunNameInfo =
+ FunctionInfo<SetFunNameFn>(js::SetFunctionNameIfNoOwnName, "SetFunName");
+
+bool
+BaselineCompiler::emit_JSOP_SETFUNNAME()
+{
+ frame.popRegsAndSync(2);
+
+ frame.push(R0);
+ frame.syncStack(0);
+
+ FunctionPrefixKind prefixKind = FunctionPrefixKind(GET_UINT8(pc));
+ masm.unboxObject(R0, R0.scratchReg());
+
+ prepareVMCall();
+
+ pushArg(Imm32(int32_t(prefixKind)));
+ pushArg(R1);
+ pushArg(R0.scratchReg());
+ return callVM(SetFunNameInfo);
+}
+
void
BaselineCompiler::storeValue(const StackValue* source, const Address& dest,
const ValueOperand& scratch)
@@ -3922,7 +4001,7 @@ BaselineCompiler::emit_JSOP_MOREITER()
}
bool
-BaselineCompiler::emit_JSOP_ISNOITER()
+BaselineCompiler::emitIsMagicValue()
{
frame.syncStack(0);
@@ -3941,6 +4020,12 @@ BaselineCompiler::emit_JSOP_ISNOITER()
}
bool
+BaselineCompiler::emit_JSOP_ISNOITER()
+{
+ return emitIsMagicValue();
+}
+
+bool
BaselineCompiler::emit_JSOP_ENDITER()
{
if (!emit_JSOP_JUMPTARGET())
@@ -3952,6 +4037,12 @@ BaselineCompiler::emit_JSOP_ENDITER()
}
bool
+BaselineCompiler::emit_JSOP_ISGENCLOSING()
+{
+ return emitIsMagicValue();
+}
+
+bool
BaselineCompiler::emit_JSOP_GETRVAL()
{
frame.syncStack(0);
diff --git a/js/src/jit/BaselineCompiler.h b/js/src/jit/BaselineCompiler.h
index 9adf65c27..6b5bf009e 100644
--- a/js/src/jit/BaselineCompiler.h
+++ b/js/src/jit/BaselineCompiler.h
@@ -42,6 +42,7 @@ namespace jit {
_(JSOP_DUP2) \
_(JSOP_SWAP) \
_(JSOP_PICK) \
+ _(JSOP_UNPICK) \
_(JSOP_GOTO) \
_(JSOP_IFEQ) \
_(JSOP_IFNE) \
@@ -71,6 +72,7 @@ namespace jit {
_(JSOP_REGEXP) \
_(JSOP_LAMBDA) \
_(JSOP_LAMBDA_ARROW) \
+ _(JSOP_SETFUNNAME) \
_(JSOP_BITOR) \
_(JSOP_BITXOR) \
_(JSOP_BITAND) \
@@ -201,6 +203,7 @@ namespace jit {
_(JSOP_MOREITER) \
_(JSOP_ISNOITER) \
_(JSOP_ENDITER) \
+ _(JSOP_ISGENCLOSING) \
_(JSOP_GENERATOR) \
_(JSOP_INITIALYIELD) \
_(JSOP_YIELD) \
@@ -215,6 +218,7 @@ namespace jit {
_(JSOP_FUNCTIONTHIS) \
_(JSOP_GLOBALTHIS) \
_(JSOP_CHECKISOBJ) \
+ _(JSOP_CHECKISCALLABLE) \
_(JSOP_CHECKTHIS) \
_(JSOP_CHECKRETURN) \
_(JSOP_NEWTARGET) \
@@ -222,7 +226,7 @@ namespace jit {
_(JSOP_SPREADSUPERCALL) \
_(JSOP_THROWSETCONST) \
_(JSOP_THROWSETALIASEDCONST) \
- _(JSOP_THROWSETCALLEE) \
+ _(JSOP_THROWSETCALLEE) \
_(JSOP_INITHIDDENPROP_GETTER) \
_(JSOP_INITHIDDENPROP_SETTER) \
_(JSOP_INITHIDDENELEM) \
@@ -230,8 +234,9 @@ namespace jit {
_(JSOP_INITHIDDENELEM_SETTER) \
_(JSOP_CHECKOBJCOERCIBLE) \
_(JSOP_DEBUGCHECKSELFHOSTED) \
- _(JSOP_JUMPTARGET) \
- _(JSOP_IS_CONSTRUCTING)
+ _(JSOP_JUMPTARGET) \
+ _(JSOP_IS_CONSTRUCTING) \
+ _(JSOP_TRY_DESTRUCTURING_ITERCLOSE)
class BaselineCompiler : public BaselineCompilerSpecific
{
@@ -340,6 +345,8 @@ class BaselineCompiler : public BaselineCompilerSpecific
MOZ_MUST_USE bool emitThrowConstAssignment();
MOZ_MUST_USE bool emitUninitializedLexicalCheck(const ValueOperand& val);
+ MOZ_MUST_USE bool emitIsMagicValue();
+
MOZ_MUST_USE bool addPCMappingEntry(bool addIndexEntry);
MOZ_MUST_USE bool addYieldOffset();
diff --git a/js/src/jit/CodeGenerator.cpp b/js/src/jit/CodeGenerator.cpp
index ce97363be..ccdc5fbfa 100644
--- a/js/src/jit/CodeGenerator.cpp
+++ b/js/src/jit/CodeGenerator.cpp
@@ -2548,6 +2548,20 @@ CodeGenerator::emitLambdaInit(Register output, Register envChain,
masm.storePtr(ImmGCPtr(info.fun->displayAtom()), Address(output, JSFunction::offsetOfAtom()));
}
+typedef bool (*SetFunNameFn)(JSContext*, HandleFunction, HandleValue, FunctionPrefixKind);
+static const VMFunction SetFunNameInfo =
+ FunctionInfo<SetFunNameFn>(js::SetFunctionNameIfNoOwnName, "SetFunName");
+
+void
+CodeGenerator::visitSetFunName(LSetFunName* lir)
+{
+ pushArg(Imm32(lir->mir()->prefixKind()));
+ pushArg(ToValue(lir, LSetFunName::NameValue));
+ pushArg(ToRegister(lir->fun()));
+
+ callVM(SetFunNameInfo, lir);
+}
+
void
CodeGenerator::visitOsiPoint(LOsiPoint* lir)
{
@@ -11312,25 +11326,35 @@ class OutOfLineIsCallable : public OutOfLineCodeBase<CodeGenerator>
}
};
+template <CodeGenerator::CallableOrConstructor mode>
void
-CodeGenerator::visitIsCallable(LIsCallable* ins)
+CodeGenerator::emitIsCallableOrConstructor(Register object, Register output, Label* failure)
{
- Register object = ToRegister(ins->object());
- Register output = ToRegister(ins->output());
-
- OutOfLineIsCallable* ool = new(alloc()) OutOfLineIsCallable(ins);
- addOutOfLineCode(ool, ins->mir());
-
Label notFunction, hasCOps, done;
masm.loadObjClass(object, output);
- // Just skim proxies off. Their notion of isCallable() is more complicated.
- masm.branchTestClassIsProxy(true, output, ool->entry());
+ // Just skim proxies off. Their notion of isCallable()/isConstructor() is
+ // more complicated.
+ masm.branchTestClassIsProxy(true, output, failure);
// An object is callable iff:
// is<JSFunction>() || (getClass()->cOps && getClass()->cOps->call).
+ // An object is constructor iff:
+ // ((is<JSFunction>() && as<JSFunction>().isConstructor) ||
+ // (getClass()->cOps && getClass()->cOps->construct)).
masm.branchPtr(Assembler::NotEqual, output, ImmPtr(&JSFunction::class_), &notFunction);
- masm.move32(Imm32(1), output);
+ if (mode == Callable) {
+ masm.move32(Imm32(1), output);
+ } else {
+ Label notConstructor;
+ masm.load16ZeroExtend(Address(object, JSFunction::offsetOfFlags()), output);
+ masm.and32(Imm32(JSFunction::CONSTRUCTOR), output);
+ masm.branchTest32(Assembler::Zero, output, output, &notConstructor);
+ masm.move32(Imm32(1), output);
+ masm.jump(&done);
+ masm.bind(&notConstructor);
+ masm.move32(Imm32(0), output);
+ }
masm.jump(&done);
masm.bind(&notFunction);
@@ -11341,10 +11365,26 @@ CodeGenerator::visitIsCallable(LIsCallable* ins)
masm.bind(&hasCOps);
masm.loadPtr(Address(output, offsetof(js::Class, cOps)), output);
- masm.cmpPtrSet(Assembler::NonZero, Address(output, offsetof(js::ClassOps, call)),
+ size_t opsOffset = mode == Callable
+ ? offsetof(js::ClassOps, call)
+ : offsetof(js::ClassOps, construct);
+ masm.cmpPtrSet(Assembler::NonZero, Address(output, opsOffset),
ImmPtr(nullptr), output);
masm.bind(&done);
+}
+
+void
+CodeGenerator::visitIsCallable(LIsCallable* ins)
+{
+ Register object = ToRegister(ins->object());
+ Register output = ToRegister(ins->output());
+
+ OutOfLineIsCallable* ool = new(alloc()) OutOfLineIsCallable(ins);
+ addOutOfLineCode(ool, ins->mir());
+
+ emitIsCallableOrConstructor<Callable>(object, output, ool->entry());
+
masm.bind(ool->rejoin());
}
@@ -11364,6 +11404,36 @@ CodeGenerator::visitOutOfLineIsCallable(OutOfLineIsCallable* ool)
masm.jump(ool->rejoin());
}
+typedef bool (*CheckIsCallableFn)(JSContext*, HandleValue, CheckIsCallableKind);
+static const VMFunction CheckIsCallableInfo =
+ FunctionInfo<CheckIsCallableFn>(CheckIsCallable, "CheckIsCallable");
+
+void
+CodeGenerator::visitCheckIsCallable(LCheckIsCallable* ins)
+{
+ ValueOperand checkValue = ToValue(ins, LCheckIsCallable::CheckValue);
+ Register temp = ToRegister(ins->temp());
+
+ // OOL code is used in the following 2 cases:
+ // * checkValue is not callable
+ // * checkValue is proxy and it's unknown whether it's callable or not
+ // CheckIsCallable checks if passed value is callable, regardless of the
+ // cases above. IsCallable operation is not observable and checking it
+ // again doesn't matter.
+ OutOfLineCode* ool = oolCallVM(CheckIsCallableInfo, ins,
+ ArgList(checkValue, Imm32(ins->mir()->checkKind())),
+ StoreNothing());
+
+ masm.branchTestObject(Assembler::NotEqual, checkValue, ool->entry());
+
+ Register object = masm.extractObject(checkValue, temp);
+ emitIsCallableOrConstructor<Callable>(object, temp, ool->entry());
+
+ masm.branchTest32(Assembler::Zero, temp, temp, ool->entry());
+
+ masm.bind(ool->rejoin());
+}
+
class OutOfLineIsConstructor : public OutOfLineCodeBase<CodeGenerator>
{
LIsConstructor* ins_;
@@ -11390,37 +11460,8 @@ CodeGenerator::visitIsConstructor(LIsConstructor* ins)
OutOfLineIsConstructor* ool = new(alloc()) OutOfLineIsConstructor(ins);
addOutOfLineCode(ool, ins->mir());
- Label notFunction, notConstructor, hasCOps, done;
- masm.loadObjClass(object, output);
-
- // Just skim proxies off. Their notion of isConstructor() is more complicated.
- masm.branchTestClassIsProxy(true, output, ool->entry());
-
- // An object is constructor iff
- // ((is<JSFunction>() && as<JSFunction>().isConstructor) ||
- // (getClass()->cOps && getClass()->cOps->construct)).
- masm.branchPtr(Assembler::NotEqual, output, ImmPtr(&JSFunction::class_), &notFunction);
- masm.load16ZeroExtend(Address(object, JSFunction::offsetOfFlags()), output);
- masm.and32(Imm32(JSFunction::CONSTRUCTOR), output);
- masm.branchTest32(Assembler::Zero, output, output, &notConstructor);
- masm.move32(Imm32(1), output);
- masm.jump(&done);
- masm.bind(&notConstructor);
- masm.move32(Imm32(0), output);
- masm.jump(&done);
-
- masm.bind(&notFunction);
- masm.branchPtr(Assembler::NonZero, Address(output, offsetof(js::Class, cOps)),
- ImmPtr(nullptr), &hasCOps);
- masm.move32(Imm32(0), output);
- masm.jump(&done);
-
- masm.bind(&hasCOps);
- masm.loadPtr(Address(output, offsetof(js::Class, cOps)), output);
- masm.cmpPtrSet(Assembler::NonZero, Address(output, offsetof(js::ClassOps, construct)),
- ImmPtr(nullptr), output);
+ emitIsCallableOrConstructor<Constructor>(object, output, ool->entry());
- masm.bind(&done);
masm.bind(ool->rejoin());
}
diff --git a/js/src/jit/CodeGenerator.h b/js/src/jit/CodeGenerator.h
index 8f4bcc813..d3126651b 100644
--- a/js/src/jit/CodeGenerator.h
+++ b/js/src/jit/CodeGenerator.h
@@ -134,6 +134,7 @@ class CodeGenerator final : public CodeGeneratorSpecific
void visitOutOfLineLambdaArrow(OutOfLineLambdaArrow* ool);
void visitLambdaArrow(LLambdaArrow* lir);
void visitLambdaForSingleton(LLambdaForSingleton* lir);
+ void visitSetFunName(LSetFunName* lir);
void visitPointer(LPointer* lir);
void visitKeepAliveObject(LKeepAliveObject* lir);
void visitSlots(LSlots* lir);
@@ -363,6 +364,12 @@ class CodeGenerator final : public CodeGeneratorSpecific
void visitCallDOMNative(LCallDOMNative* lir);
void visitCallGetIntrinsicValue(LCallGetIntrinsicValue* lir);
void visitCallBindVar(LCallBindVar* lir);
+ enum CallableOrConstructor {
+ Callable,
+ Constructor
+ };
+ template <CallableOrConstructor mode>
+ void emitIsCallableOrConstructor(Register object, Register output, Label* failure);
void visitIsCallable(LIsCallable* lir);
void visitOutOfLineIsCallable(OutOfLineIsCallable* ool);
void visitIsConstructor(LIsConstructor* lir);
@@ -383,6 +390,7 @@ class CodeGenerator final : public CodeGeneratorSpecific
void visitArrowNewTarget(LArrowNewTarget* ins);
void visitCheckReturn(LCheckReturn* ins);
void visitCheckIsObj(LCheckIsObj* ins);
+ void visitCheckIsCallable(LCheckIsCallable* ins);
void visitCheckObjCoercible(LCheckObjCoercible* ins);
void visitDebugCheckSelfHosted(LDebugCheckSelfHosted* ins);
void visitNaNToZero(LNaNToZero* ins);
diff --git a/js/src/jit/IonAnalysis.cpp b/js/src/jit/IonAnalysis.cpp
index 90303255d..2c9ffb607 100644
--- a/js/src/jit/IonAnalysis.cpp
+++ b/js/src/jit/IonAnalysis.cpp
@@ -2188,6 +2188,12 @@ IsRegExpHoistable(MIRGenerator* mir, MDefinition* regexp, MDefinitionVector& wor
bool
jit::MakeMRegExpHoistable(MIRGenerator* mir, MIRGraph& graph)
{
+ // If we are compiling try blocks, regular expressions may be observable
+ // from catch blocks (which Ion does not compile). For now just disable the
+ // pass in this case.
+ if (graph.hasTryBlock())
+ return true;
+
MDefinitionVector worklist(graph.alloc());
for (ReversePostorderIterator block(graph.rpoBegin()); block != graph.rpoEnd(); block++) {
diff --git a/js/src/jit/IonBuilder.cpp b/js/src/jit/IonBuilder.cpp
index 1488d7d34..54d05cac4 100644
--- a/js/src/jit/IonBuilder.cpp
+++ b/js/src/jit/IonBuilder.cpp
@@ -958,30 +958,35 @@ IonBuilder::build()
bool
IonBuilder::processIterators()
{
- // Find phis that must directly hold an iterator live.
- Vector<MPhi*, 0, SystemAllocPolicy> worklist;
+ // Find and mark phis that must transitively hold an iterator live.
+
+ Vector<MDefinition*, 8, SystemAllocPolicy> worklist;
+
for (size_t i = 0; i < iterators_.length(); i++) {
- MInstruction* ins = iterators_[i];
- for (MUseDefIterator iter(ins); iter; iter++) {
- if (iter.def()->isPhi()) {
- if (!worklist.append(iter.def()->toPhi()))
- return false;
- }
+ MDefinition* iter = iterators_[i];
+ if (!iter->isInWorklist()) {
+ if (!worklist.append(iter))
+ return false;
+ iter->setInWorklist();
}
}
- // Propagate the iterator and live status of phis to all other connected
- // phis.
while (!worklist.empty()) {
- MPhi* phi = worklist.popCopy();
- phi->setIterator();
- phi->setImplicitlyUsedUnchecked();
-
- for (MUseDefIterator iter(phi); iter; iter++) {
- if (iter.def()->isPhi()) {
- MPhi* other = iter.def()->toPhi();
- if (!other->isIterator() && !worklist.append(other))
+ MDefinition* def = worklist.popCopy();
+ def->setNotInWorklist();
+
+ if (def->isPhi()) {
+ MPhi* phi = def->toPhi();
+ phi->setIterator();
+ phi->setImplicitlyUsedUnchecked();
+ }
+
+ for (MUseDefIterator iter(def); iter; iter++) {
+ MDefinition* use = iter.def();
+ if (!use->isInWorklist() && (!use->isPhi() || !use->toPhi()->isIterator())) {
+ if (!worklist.append(use))
return false;
+ use->setInWorklist();
}
}
}
@@ -1563,6 +1568,7 @@ IonBuilder::traverseBytecode()
case JSOP_DUP:
case JSOP_DUP2:
case JSOP_PICK:
+ case JSOP_UNPICK:
case JSOP_SWAP:
case JSOP_SETARG:
case JSOP_SETLOCAL:
@@ -1672,6 +1678,7 @@ IonBuilder::inspectOpcode(JSOp op)
switch (op) {
case JSOP_NOP:
case JSOP_NOP_DESTRUCTURING:
+ case JSOP_TRY_DESTRUCTURING_ITERCLOSE:
case JSOP_LINENO:
case JSOP_LOOPENTRY:
case JSOP_JUMPTARGET:
@@ -1935,6 +1942,10 @@ IonBuilder::inspectOpcode(JSOp op)
case JSOP_CALLITER:
case JSOP_NEW:
case JSOP_SUPERCALL:
+ if (op == JSOP_CALLITER) {
+ if (!outermostBuilder()->iterators_.append(current->peek(-1)))
+ return false;
+ }
return jsop_call(GET_ARGC(pc), (JSOp)*pc == JSOP_NEW || (JSOp)*pc == JSOP_SUPERCALL);
case JSOP_EVAL:
@@ -2017,6 +2028,10 @@ IonBuilder::inspectOpcode(JSOp op)
current->pick(-GET_INT8(pc));
return true;
+ case JSOP_UNPICK:
+ current->unpick(-GET_INT8(pc));
+ return true;
+
case JSOP_GETALIASEDVAR:
return jsop_getaliasedvar(EnvironmentCoordinate(pc));
@@ -2122,6 +2137,9 @@ IonBuilder::inspectOpcode(JSOp op)
case JSOP_LAMBDA_ARROW:
return jsop_lambda_arrow(info().getFunction(pc));
+ case JSOP_SETFUNNAME:
+ return jsop_setfunname(GET_UINT8(pc));
+
case JSOP_ITER:
return jsop_iter(GET_INT8(pc));
@@ -2166,6 +2184,9 @@ IonBuilder::inspectOpcode(JSOp op)
case JSOP_CHECKISOBJ:
return jsop_checkisobj(GET_UINT8(pc));
+ case JSOP_CHECKISCALLABLE:
+ return jsop_checkiscallable(GET_UINT8(pc));
+
case JSOP_CHECKOBJCOERCIBLE:
return jsop_checkobjcoercible();
@@ -10883,6 +10904,15 @@ IonBuilder::jsop_checkisobj(uint8_t kind)
}
bool
+IonBuilder::jsop_checkiscallable(uint8_t kind)
+{
+ MCheckIsCallable* check = MCheckIsCallable::New(alloc(), current->pop(), kind);
+ current->add(check);
+ current->push(check);
+ return true;
+}
+
+bool
IonBuilder::jsop_checkobjcoercible()
{
MDefinition* toCheck = current->peek(-1);
@@ -13340,6 +13370,21 @@ IonBuilder::jsop_lambda_arrow(JSFunction* fun)
}
bool
+IonBuilder::jsop_setfunname(uint8_t prefixKind)
+{
+ MDefinition* name = current->pop();
+ MDefinition* fun = current->pop();
+ MOZ_ASSERT(fun->type() == MIRType::Object);
+
+ MSetFunName* ins = MSetFunName::New(alloc(), fun, name, prefixKind);
+
+ current->add(ins);
+ current->push(fun);
+
+ return resumeAfter(ins);
+}
+
+bool
IonBuilder::jsop_setarg(uint32_t arg)
{
// To handle this case, we should spill the arguments to the space where
diff --git a/js/src/jit/IonBuilder.h b/js/src/jit/IonBuilder.h
index 38647a88f..35ad120f7 100644
--- a/js/src/jit/IonBuilder.h
+++ b/js/src/jit/IonBuilder.h
@@ -766,6 +766,7 @@ class IonBuilder
MOZ_MUST_USE bool jsop_object(JSObject* obj);
MOZ_MUST_USE bool jsop_lambda(JSFunction* fun);
MOZ_MUST_USE bool jsop_lambda_arrow(JSFunction* fun);
+ MOZ_MUST_USE bool jsop_setfunname(uint8_t prefixKind);
MOZ_MUST_USE bool jsop_functionthis();
MOZ_MUST_USE bool jsop_globalthis();
MOZ_MUST_USE bool jsop_typeof();
@@ -782,6 +783,7 @@ class IonBuilder
MOZ_MUST_USE bool jsop_debugger();
MOZ_MUST_USE bool jsop_newtarget();
MOZ_MUST_USE bool jsop_checkisobj(uint8_t kind);
+ MOZ_MUST_USE bool jsop_checkiscallable(uint8_t kind);
MOZ_MUST_USE bool jsop_checkobjcoercible();
MOZ_MUST_USE bool jsop_pushcallobj();
@@ -1241,7 +1243,7 @@ class IonBuilder
Vector<ControlFlowInfo, 4, JitAllocPolicy> loops_;
Vector<ControlFlowInfo, 0, JitAllocPolicy> switches_;
Vector<ControlFlowInfo, 2, JitAllocPolicy> labels_;
- Vector<MInstruction*, 2, JitAllocPolicy> iterators_;
+ Vector<MDefinition*, 2, JitAllocPolicy> iterators_;
Vector<LoopHeader, 0, JitAllocPolicy> loopHeaders_;
BaselineInspector* inspector;
diff --git a/js/src/jit/JitFrames.cpp b/js/src/jit/JitFrames.cpp
index 646442b4c..966d952d3 100644
--- a/js/src/jit/JitFrames.cpp
+++ b/js/src/jit/JitFrames.cpp
@@ -328,23 +328,46 @@ NumArgAndLocalSlots(const InlineFrameIterator& frame)
}
static void
-CloseLiveIteratorIon(JSContext* cx, const InlineFrameIterator& frame, uint32_t stackSlot)
+CloseLiveIteratorIon(JSContext* cx, const InlineFrameIterator& frame, JSTryNote* tn)
{
+ MOZ_ASSERT(tn->kind == JSTRY_FOR_IN ||
+ tn->kind == JSTRY_DESTRUCTURING_ITERCLOSE);
+
+ bool isDestructuring = tn->kind == JSTRY_DESTRUCTURING_ITERCLOSE;
+ MOZ_ASSERT_IF(!isDestructuring, tn->stackDepth > 0);
+ MOZ_ASSERT_IF(isDestructuring, tn->stackDepth > 1);
+
SnapshotIterator si = frame.snapshotIterator();
- // Skip stack slots until we reach the iterator object.
- uint32_t skipSlots = NumArgAndLocalSlots(frame) + stackSlot - 1;
+ // Skip stack slots until we reach the iterator object on the stack. For
+ // the destructuring case, we also need to get the "done" value.
+ uint32_t stackSlot = tn->stackDepth;
+ uint32_t adjust = isDestructuring ? 2 : 1;
+ uint32_t skipSlots = NumArgAndLocalSlots(frame) + stackSlot - adjust;
for (unsigned i = 0; i < skipSlots; i++)
si.skip();
Value v = si.read();
- RootedObject obj(cx, &v.toObject());
+ RootedObject iterObject(cx, &v.toObject());
+
+ if (isDestructuring) {
+ RootedValue doneValue(cx, si.read());
+ bool done = ToBoolean(doneValue);
+ // Do not call IteratorClose if the destructuring iterator is already
+ // done.
+ if (done)
+ return;
+ }
- if (cx->isExceptionPending())
- UnwindIteratorForException(cx, obj);
- else
- UnwindIteratorForUncatchableException(cx, obj);
+ if (cx->isExceptionPending()) {
+ if (tn->kind == JSTRY_FOR_IN)
+ UnwindIteratorForException(cx, iterObject);
+ else
+ IteratorCloseForException(cx, iterObject);
+ } else {
+ UnwindIteratorForUncatchableException(cx, iterObject);
+ }
}
class IonFrameStackDepthOp
@@ -413,25 +436,36 @@ HandleExceptionIon(JSContext* cx, const InlineFrameIterator& frame, ResumeFromEx
if (!script->hasTrynotes())
return;
+ bool inForOfIterClose = false;
+
for (TryNoteIterIon tni(cx, frame); !tni.done(); ++tni) {
JSTryNote* tn = *tni;
switch (tn->kind) {
- case JSTRY_FOR_IN: {
- MOZ_ASSERT(JSOp(*(script->main() + tn->start + tn->length)) == JSOP_ENDITER);
- MOZ_ASSERT(tn->stackDepth > 0);
+ case JSTRY_FOR_IN:
+ case JSTRY_DESTRUCTURING_ITERCLOSE:
+ MOZ_ASSERT_IF(tn->kind == JSTRY_FOR_IN,
+ JSOp(*(script->main() + tn->start + tn->length)) == JSOP_ENDITER);
+ CloseLiveIteratorIon(cx, frame, tn);
+ break;
- uint32_t localSlot = tn->stackDepth;
- CloseLiveIteratorIon(cx, frame, localSlot);
+ case JSTRY_FOR_OF_ITERCLOSE:
+ inForOfIterClose = true;
break;
- }
case JSTRY_FOR_OF:
+ inForOfIterClose = false;
+ break;
+
case JSTRY_LOOP:
break;
case JSTRY_CATCH:
if (cx->isExceptionPending()) {
+ // See corresponding comment in ProcessTryNotes.
+ if (inForOfIterClose)
+ break;
+
// Ion can compile try-catch, but bailing out to catch
// exceptions is slow. Reset the warm-up counter so that if we
// catch many exceptions we won't Ion-compile the script.
@@ -562,6 +596,7 @@ ProcessTryNotesBaseline(JSContext* cx, const JitFrameIterator& frame, Environmen
ResumeFromException* rfe, jsbytecode** pc)
{
RootedScript script(cx, frame.baselineFrame()->script());
+ bool inForOfIterClose = false;
for (TryNoteIterBaseline tni(cx, frame.baselineFrame(), *pc); !tni.done(); ++tni) {
JSTryNote* tn = *tni;
@@ -572,7 +607,11 @@ ProcessTryNotesBaseline(JSContext* cx, const JitFrameIterator& frame, Environmen
// If we're closing a legacy generator, we have to skip catch
// blocks.
if (cx->isClosingGenerator())
- continue;
+ break;
+
+ // See corresponding comment in ProcessTryNotes.
+ if (inForOfIterClose)
+ break;
SettleOnTryNote(cx, tn, frame, ei, rfe, pc);
@@ -588,6 +627,10 @@ ProcessTryNotesBaseline(JSContext* cx, const JitFrameIterator& frame, Environmen
}
case JSTRY_FINALLY: {
+ // See corresponding comment in ProcessTryNotes.
+ if (inForOfIterClose)
+ break;
+
SettleOnTryNote(cx, tn, frame, ei, rfe, pc);
rfe->kind = ResumeFromException::RESUME_FINALLY;
rfe->target = script->baselineScript()->nativeCodeForPC(script, *pc);
@@ -602,7 +645,7 @@ ProcessTryNotesBaseline(JSContext* cx, const JitFrameIterator& frame, Environmen
uint8_t* framePointer;
uint8_t* stackPointer;
BaselineFrameAndStackPointersFromTryNote(tn, frame, &framePointer, &stackPointer);
- Value iterValue(*(Value*) stackPointer);
+ Value iterValue(*reinterpret_cast<Value*>(stackPointer));
RootedObject iterObject(cx, &iterValue.toObject());
if (!UnwindIteratorForException(cx, iterObject)) {
// See comment in the JSTRY_FOR_IN case in Interpreter.cpp's
@@ -614,7 +657,31 @@ ProcessTryNotesBaseline(JSContext* cx, const JitFrameIterator& frame, Environmen
break;
}
+ case JSTRY_DESTRUCTURING_ITERCLOSE: {
+ uint8_t* framePointer;
+ uint8_t* stackPointer;
+ BaselineFrameAndStackPointersFromTryNote(tn, frame, &framePointer, &stackPointer);
+ RootedValue doneValue(cx, *(reinterpret_cast<Value*>(stackPointer)));
+ bool done = ToBoolean(doneValue);
+ if (!done) {
+ Value iterValue(*(reinterpret_cast<Value*>(stackPointer) + 1));
+ RootedObject iterObject(cx, &iterValue.toObject());
+ if (!IteratorCloseForException(cx, iterObject)) {
+ SettleOnTryNote(cx, tn, frame, ei, rfe, pc);
+ return false;
+ }
+ }
+ break;
+ }
+
+ case JSTRY_FOR_OF_ITERCLOSE:
+ inForOfIterClose = true;
+ break;
+
case JSTRY_FOR_OF:
+ inForOfIterClose = false;
+ break;
+
case JSTRY_LOOP:
break;
diff --git a/js/src/jit/Lowering.cpp b/js/src/jit/Lowering.cpp
index 13e50820e..7f28a9020 100644
--- a/js/src/jit/Lowering.cpp
+++ b/js/src/jit/Lowering.cpp
@@ -2460,6 +2460,18 @@ LIRGenerator::visitLambdaArrow(MLambdaArrow* ins)
}
void
+LIRGenerator::visitSetFunName(MSetFunName* ins)
+{
+ MOZ_ASSERT(ins->fun()->type() == MIRType::Object);
+ MOZ_ASSERT(ins->name()->type() == MIRType::Value);
+
+ LSetFunName* lir = new(alloc()) LSetFunName(useRegisterAtStart(ins->fun()),
+ useBoxAtStart(ins->name()));
+ add(lir, ins);
+ assignSafepoint(lir, ins);
+}
+
+void
LIRGenerator::visitKeepAliveObject(MKeepAliveObject* ins)
{
MDefinition* obj = ins->object();
@@ -4677,6 +4689,19 @@ LIRGenerator::visitCheckIsObj(MCheckIsObj* ins)
}
void
+LIRGenerator::visitCheckIsCallable(MCheckIsCallable* ins)
+{
+ MDefinition* checkVal = ins->checkValue();
+ MOZ_ASSERT(checkVal->type() == MIRType::Value);
+
+ LCheckIsCallable* lir = new(alloc()) LCheckIsCallable(useBox(checkVal),
+ temp());
+ redefine(ins, checkVal);
+ add(lir, ins);
+ assignSafepoint(lir, ins);
+}
+
+void
LIRGenerator::visitCheckObjCoercible(MCheckObjCoercible* ins)
{
MDefinition* checkVal = ins->checkValue();
diff --git a/js/src/jit/Lowering.h b/js/src/jit/Lowering.h
index 0f66a3c24..b2805cb7a 100644
--- a/js/src/jit/Lowering.h
+++ b/js/src/jit/Lowering.h
@@ -185,6 +185,7 @@ class LIRGenerator : public LIRGeneratorSpecific
void visitNullarySharedStub(MNullarySharedStub* ins);
void visitLambda(MLambda* ins);
void visitLambdaArrow(MLambdaArrow* ins);
+ void visitSetFunName(MSetFunName* ins);
void visitKeepAliveObject(MKeepAliveObject* ins);
void visitSlots(MSlots* ins);
void visitElements(MElements* ins);
@@ -328,6 +329,7 @@ class LIRGenerator : public LIRGeneratorSpecific
void visitGuardSharedTypedArray(MGuardSharedTypedArray* ins);
void visitCheckReturn(MCheckReturn* ins);
void visitCheckIsObj(MCheckIsObj* ins);
+ void visitCheckIsCallable(MCheckIsCallable* ins);
void visitCheckObjCoercible(MCheckObjCoercible* ins);
void visitDebugCheckSelfHosted(MDebugCheckSelfHosted* ins);
};
diff --git a/js/src/jit/MIR.h b/js/src/jit/MIR.h
index dcb08c317..2de91e2df 100644
--- a/js/src/jit/MIR.h
+++ b/js/src/jit/MIR.h
@@ -8464,6 +8464,34 @@ class MLambdaArrow
}
};
+class MSetFunName
+ : public MAryInstruction<2>,
+ public MixPolicy<ObjectPolicy<0>, BoxPolicy<1> >::Data
+{
+ uint8_t prefixKind_;
+
+ explicit MSetFunName(MDefinition* fun, MDefinition* name, uint8_t prefixKind)
+ : prefixKind_(prefixKind)
+ {
+ initOperand(0, fun);
+ initOperand(1, name);
+ setResultType(MIRType::None);
+ }
+
+ public:
+ INSTRUCTION_HEADER(SetFunName)
+ TRIVIAL_NEW_WRAPPERS
+ NAMED_OPERANDS((0, fun), (1, name))
+
+ uint8_t prefixKind() const {
+ return prefixKind_;
+ }
+
+ bool possiblyCalls() const override {
+ return true;
+ }
+};
+
// Returns obj->slots.
class MSlots
: public MUnaryInstruction,
@@ -13427,8 +13455,9 @@ class MCheckIsObj
{
uint8_t checkKind_;
- explicit MCheckIsObj(MDefinition* toCheck, uint8_t checkKind)
- : MUnaryInstruction(toCheck), checkKind_(checkKind)
+ MCheckIsObj(MDefinition* toCheck, uint8_t checkKind)
+ : MUnaryInstruction(toCheck),
+ checkKind_(checkKind)
{
setResultType(MIRType::Value);
setResultTypeSet(toCheck->resultTypeSet());
@@ -13447,6 +13476,33 @@ class MCheckIsObj
}
};
+class MCheckIsCallable
+ : public MUnaryInstruction,
+ public BoxInputsPolicy::Data
+{
+ uint8_t checkKind_;
+
+ MCheckIsCallable(MDefinition* toCheck, uint8_t checkKind)
+ : MUnaryInstruction(toCheck),
+ checkKind_(checkKind)
+ {
+ setResultType(MIRType::Value);
+ setResultTypeSet(toCheck->resultTypeSet());
+ setGuard();
+ }
+
+ public:
+ INSTRUCTION_HEADER(CheckIsCallable)
+ TRIVIAL_NEW_WRAPPERS
+ NAMED_OPERANDS((0, checkValue))
+
+ uint8_t checkKind() const { return checkKind_; }
+
+ AliasSet getAliasSet() const override {
+ return AliasSet::None();
+ }
+};
+
class MCheckObjCoercible
: public MUnaryInstruction,
public BoxInputsPolicy::Data
diff --git a/js/src/jit/MIRGraph.cpp b/js/src/jit/MIRGraph.cpp
index 3a363a5bf..d6e0fa8ff 100644
--- a/js/src/jit/MIRGraph.cpp
+++ b/js/src/jit/MIRGraph.cpp
@@ -790,6 +790,19 @@ MBasicBlock::pick(int32_t depth)
}
void
+MBasicBlock::unpick(int32_t depth)
+{
+ // unpick take the top of the stack element and move it under the depth-th
+ // element;
+ // unpick(-2):
+ // A B C D E
+ // A B C E D [ swapAt(-1) ]
+ // A B E C D [ swapAt(-2) ]
+ for (int32_t n = -1; n >= depth; n--)
+ swapAt(n);
+}
+
+void
MBasicBlock::swapAt(int32_t depth)
{
uint32_t lhsDepth = stackPosition_ + depth - 1;
diff --git a/js/src/jit/MIRGraph.h b/js/src/jit/MIRGraph.h
index b986218f4..705d70fa1 100644
--- a/js/src/jit/MIRGraph.h
+++ b/js/src/jit/MIRGraph.h
@@ -142,6 +142,9 @@ class MBasicBlock : public TempObject, public InlineListNode<MBasicBlock>
// Move the definition to the top of the stack.
void pick(int32_t depth);
+ // Move the top of the stack definition under the depth-th stack value.
+ void unpick(int32_t depth);
+
// Exchange 2 stack slots at the defined depth
void swapAt(int32_t depth);
diff --git a/js/src/jit/MOpcodes.h b/js/src/jit/MOpcodes.h
index 74594cb35..bb2ab8190 100644
--- a/js/src/jit/MOpcodes.h
+++ b/js/src/jit/MOpcodes.h
@@ -161,6 +161,7 @@ namespace jit {
_(StringReplace) \
_(Lambda) \
_(LambdaArrow) \
+ _(SetFunName) \
_(KeepAliveObject) \
_(Slots) \
_(Elements) \
@@ -284,6 +285,7 @@ namespace jit {
_(ArrowNewTarget) \
_(CheckReturn) \
_(CheckIsObj) \
+ _(CheckIsCallable) \
_(CheckObjCoercible) \
_(DebugCheckSelfHosted) \
_(AsmJSNeg) \
diff --git a/js/src/jit/VMFunctions.cpp b/js/src/jit/VMFunctions.cpp
index 4edbc3c83..77b9e3647 100644
--- a/js/src/jit/VMFunctions.cpp
+++ b/js/src/jit/VMFunctions.cpp
@@ -1349,5 +1349,14 @@ BaselineGetFunctionThis(JSContext* cx, BaselineFrame* frame, MutableHandleValue
return GetFunctionThis(cx, frame, res);
}
+bool
+CheckIsCallable(JSContext* cx, HandleValue v, CheckIsCallableKind kind)
+{
+ if (!IsCallable(v))
+ return ThrowCheckIsCallable(cx, kind);
+
+ return true;
+}
+
} // namespace jit
} // namespace js
diff --git a/js/src/jit/VMFunctions.h b/js/src/jit/VMFunctions.h
index f754d58c7..572f05373 100644
--- a/js/src/jit/VMFunctions.h
+++ b/js/src/jit/VMFunctions.h
@@ -13,6 +13,7 @@
#include "jit/CompileInfo.h"
#include "jit/JitFrames.h"
+#include "vm/Interpreter.h"
namespace js {
@@ -802,6 +803,9 @@ ThrowObjectCoercible(JSContext* cx, HandleValue v);
MOZ_MUST_USE bool
BaselineGetFunctionThis(JSContext* cx, BaselineFrame* frame, MutableHandleValue res);
+MOZ_MUST_USE bool
+CheckIsCallable(JSContext* cx, HandleValue v, CheckIsCallableKind kind);
+
} // namespace jit
} // namespace js
diff --git a/js/src/jit/shared/LIR-shared.h b/js/src/jit/shared/LIR-shared.h
index a352f5d8a..9dcb527c5 100644
--- a/js/src/jit/shared/LIR-shared.h
+++ b/js/src/jit/shared/LIR-shared.h
@@ -4995,6 +4995,25 @@ class LLambdaArrow : public LInstructionHelper<1, 1 + BOX_PIECES, 0>
}
};
+class LSetFunName : public LCallInstructionHelper<1, 1 + BOX_PIECES, 0>
+{
+ public:
+ LIR_HEADER(SetFunName)
+
+ static const size_t NameValue = 1;
+
+ LSetFunName(const LAllocation& fun, const LBoxAllocation& name) {
+ setOperand(0, fun);
+ setBoxOperand(NameValue, name);
+ }
+ const LAllocation* fun() {
+ return getOperand(0);
+ }
+ const MSetFunName* mir() const {
+ return mir_->toSetFunName();
+ }
+};
+
class LKeepAliveObject : public LInstructionHelper<0, 1, 0>
{
public:
@@ -8874,6 +8893,27 @@ class LCheckIsObj : public LInstructionHelper<BOX_PIECES, BOX_PIECES, 0>
}
};
+class LCheckIsCallable : public LInstructionHelper<BOX_PIECES, BOX_PIECES, 1>
+{
+ public:
+ LIR_HEADER(CheckIsCallable)
+
+ static const size_t CheckValue = 0;
+
+ LCheckIsCallable(const LBoxAllocation& value, const LDefinition& temp) {
+ setBoxOperand(CheckValue, value);
+ setTemp(0, temp);
+ }
+
+ const LDefinition* temp() {
+ return getTemp(0);
+ }
+
+ MCheckIsCallable* mir() const {
+ return mir_->toCheckIsCallable();
+ }
+};
+
class LCheckObjCoercible : public LCallInstructionHelper<BOX_PIECES, BOX_PIECES, 0>
{
public:
diff --git a/js/src/jit/shared/LOpcodes-shared.h b/js/src/jit/shared/LOpcodes-shared.h
index bb04553a6..3eea1b449 100644
--- a/js/src/jit/shared/LOpcodes-shared.h
+++ b/js/src/jit/shared/LOpcodes-shared.h
@@ -242,6 +242,7 @@
_(Lambda) \
_(LambdaArrow) \
_(LambdaForSingleton) \
+ _(SetFunName) \
_(KeepAliveObject) \
_(Slots) \
_(Elements) \
@@ -401,6 +402,7 @@
_(ArrowNewTarget) \
_(CheckReturn) \
_(CheckIsObj) \
+ _(CheckIsCallable) \
_(CheckObjCoercible) \
_(DebugCheckSelfHosted) \
_(AsmJSLoadHeap) \
diff --git a/js/src/js.msg b/js/src/js.msg
index 246e363c3..8d492f523 100644
--- a/js/src/js.msg
+++ b/js/src/js.msg
@@ -65,7 +65,7 @@ MSG_DEF(JSMSG_BAD_GETTER_OR_SETTER, 1, JSEXN_TYPEERR, "invalid {0} usage")
MSG_DEF(JSMSG_BAD_ARRAY_LENGTH, 0, JSEXN_RANGEERR, "invalid array length")
MSG_DEF(JSMSG_REDECLARED_VAR, 2, JSEXN_SYNTAXERR, "redeclaration of {0} {1}")
MSG_DEF(JSMSG_UNDECLARED_VAR, 1, JSEXN_REFERENCEERR, "assignment to undeclared variable {0}")
-MSG_DEF(JSMSG_GETTER_ONLY, 0, JSEXN_TYPEERR, "setting a property that has only a getter")
+MSG_DEF(JSMSG_GETTER_ONLY, 1, JSEXN_TYPEERR, "setting getter-only property {0}")
MSG_DEF(JSMSG_OVERWRITING_ACCESSOR, 1, JSEXN_TYPEERR, "can't overwrite accessor property {0}")
MSG_DEF(JSMSG_UNDEFINED_PROP, 1, JSEXN_REFERENCEERR, "reference to undefined property {0}")
MSG_DEF(JSMSG_INVALID_MAP_ITERABLE, 1, JSEXN_TYPEERR, "iterable for {0} should have array-like objects")
@@ -96,7 +96,7 @@ MSG_DEF(JSMSG_NOT_ITERABLE, 1, JSEXN_TYPEERR, "{0} is not iterable")
MSG_DEF(JSMSG_NOT_ITERATOR, 1, JSEXN_TYPEERR, "{0} is not iterator")
MSG_DEF(JSMSG_ALREADY_HAS_PRAGMA, 2, JSEXN_WARN, "{0} is being assigned a {1}, but already has one")
MSG_DEF(JSMSG_GET_ITER_RETURNED_PRIMITIVE, 0, JSEXN_TYPEERR, "[Symbol.iterator]() returned a non-object value")
-MSG_DEF(JSMSG_NEXT_RETURNED_PRIMITIVE, 0, JSEXN_TYPEERR, "iterator.next() returned a non-object value")
+MSG_DEF(JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, 1, JSEXN_TYPEERR, "iterator.{0}() returned a non-object value")
MSG_DEF(JSMSG_CANT_SET_PROTO, 0, JSEXN_TYPEERR, "can't set prototype of this object")
MSG_DEF(JSMSG_CANT_SET_PROTO_OF, 1, JSEXN_TYPEERR, "can't set prototype of {0}")
MSG_DEF(JSMSG_CANT_SET_PROTO_CYCLE, 0, JSEXN_TYPEERR, "can't set prototype: it would cause a prototype chain cycle")
@@ -329,6 +329,7 @@ MSG_DEF(JSMSG_TOO_MANY_LOCALS, 0, JSEXN_SYNTAXERR, "too many local varia
MSG_DEF(JSMSG_TOO_MANY_YIELDS, 0, JSEXN_SYNTAXERR, "too many yield expressions")
MSG_DEF(JSMSG_TOUGH_BREAK, 0, JSEXN_SYNTAXERR, "unlabeled break must be inside loop or switch")
MSG_DEF(JSMSG_UNEXPECTED_TOKEN, 2, JSEXN_SYNTAXERR, "expected {0}, got {1}")
+MSG_DEF(JSMSG_UNEXPECTED_PARAMLIST_END,0, JSEXN_SYNTAXERR, "unexpected end of function parameter list")
MSG_DEF(JSMSG_UNNAMED_CLASS_STMT, 0, JSEXN_SYNTAXERR, "class statement requires a name")
MSG_DEF(JSMSG_UNNAMED_FUNCTION_STMT, 0, JSEXN_SYNTAXERR, "function statement requires a name")
MSG_DEF(JSMSG_UNTERMINATED_COMMENT, 0, JSEXN_SYNTAXERR, "unterminated comment")
@@ -579,3 +580,7 @@ MSG_DEF(JSMSG_PROMISE_CAPABILITY_HAS_SOMETHING_ALREADY, 0, JSEXN_TYPEERR, "GetCa
MSG_DEF(JSMSG_PROMISE_RESOLVE_FUNCTION_NOT_CALLABLE, 0, JSEXN_TYPEERR, "A Promise subclass passed a non-callable value as the resolve function.")
MSG_DEF(JSMSG_PROMISE_REJECT_FUNCTION_NOT_CALLABLE, 0, JSEXN_TYPEERR, "A Promise subclass passed a non-callable value as the reject function.")
MSG_DEF(JSMSG_PROMISE_ERROR_IN_WRAPPED_REJECTION_REASON,0, JSEXN_INTERNALERR, "Promise rejection value is a non-unwrappable cross-compartment wrapper.")
+
+// Iterator
+MSG_DEF(JSMSG_RETURN_NOT_CALLABLE, 0, JSEXN_TYPEERR, "property 'return' of iterator is not callable")
+MSG_DEF(JSMSG_ITERATOR_NO_THROW, 0, JSEXN_TYPEERR, "iterator does not have a 'throw' method")
diff --git a/js/src/jsapi-tests/moz.build b/js/src/jsapi-tests/moz.build
index ab42ff384..f7a6080aa 100644
--- a/js/src/jsapi-tests/moz.build
+++ b/js/src/jsapi-tests/moz.build
@@ -147,7 +147,7 @@ USE_LIBS += [
OS_LIBS += CONFIG['MOZ_ZLIB_LIBS']
if CONFIG['GNU_CXX']:
- CXXFLAGS += ['-Wno-shadow', '-Werror=format']
+ CXXFLAGS += ['-Wno-shadow', '-Werror=format', '-fno-strict-aliasing']
# This is intended as a temporary workaround to enable VS2015.
if CONFIG['_MSC_VER']:
diff --git a/js/src/jsapi.cpp b/js/src/jsapi.cpp
index ee9c61059..85a38bba4 100644
--- a/js/src/jsapi.cpp
+++ b/js/src/jsapi.cpp
@@ -11,6 +11,7 @@
#include "jsapi.h"
#include "mozilla/FloatingPoint.h"
+#include "mozilla/Maybe.h"
#include "mozilla/PodOperations.h"
#include "mozilla/Sprintf.h"
@@ -107,6 +108,7 @@ using namespace js::gc;
using mozilla::Maybe;
using mozilla::PodCopy;
using mozilla::PodZero;
+using mozilla::Some;
using JS::AutoGCRooter;
using JS::ToInt32;
@@ -2093,7 +2095,7 @@ DefinePropertyById(JSContext* cx, HandleObject obj, HandleId id, HandleValue val
getter != JS_PropertyStub && setter != JS_StrictPropertyStub)
{
if (getter && !(attrs & JSPROP_GETTER)) {
- RootedAtom atom(cx, IdToFunctionName(cx, id, "get"));
+ RootedAtom atom(cx, IdToFunctionName(cx, id, FunctionPrefixKind::Get));
if (!atom)
return false;
JSFunction* getobj = NewNativeFunction(cx, (Native) getter, 0, atom);
@@ -2109,7 +2111,7 @@ DefinePropertyById(JSContext* cx, HandleObject obj, HandleId id, HandleValue val
if (setter && !(attrs & JSPROP_SETTER)) {
// Root just the getter, since the setter is not yet a JSObject.
AutoRooterGetterSetter getRoot(cx, JSPROP_GETTER, &getter, nullptr);
- RootedAtom atom(cx, IdToFunctionName(cx, id, "set"));
+ RootedAtom atom(cx, IdToFunctionName(cx, id, FunctionPrefixKind::Set));
if (!atom)
return false;
JSFunction* setobj = NewNativeFunction(cx, (Native) setter, 1, atom);
@@ -3433,10 +3435,7 @@ JS::NewFunctionFromSpec(JSContext* cx, const JSFunctionSpec* fs, HandleId id)
{
return nullptr;
}
- JSFunction* fun = &funVal.toObject().as<JSFunction>();
- if (fs->flags & JSFUN_HAS_REST)
- fun->setHasRest();
- return fun;
+ return &funVal.toObject().as<JSFunction>();
}
RootedAtom atom(cx, IdToFunctionName(cx, id));
@@ -3616,7 +3615,7 @@ JS_GetFunctionObject(JSFunction* fun)
JS_PUBLIC_API(JSString*)
JS_GetFunctionId(JSFunction* fun)
{
- return fun->name();
+ return fun->explicitName();
}
JS_PUBLIC_API(JSString*)
@@ -4232,15 +4231,15 @@ JS_GetFunctionScript(JSContext* cx, HandleFunction fun)
}
/*
- * enclosingScope is a static enclosing scope, if any (e.g. a WithScope). If
- * the enclosing scope is the global scope, this must be null.
+ * enclosingScope is a scope, if any (e.g. a WithScope). If the scope is the
+ * global scope, this must be null.
*
- * enclosingDynamicScope is a dynamic scope to use, if it's not the global.
+ * enclosingEnv is an environment to use, if it's not the global.
*/
static bool
CompileFunction(JSContext* cx, const ReadOnlyCompileOptions& optionsArg,
- const char* name, unsigned nargs, const char* const* argnames,
- SourceBufferHolder& srcBuf,
+ const char* name,
+ SourceBufferHolder& srcBuf, uint32_t parameterListEnd,
HandleObject enclosingEnv, HandleScope enclosingScope,
MutableHandleFunction fun)
{
@@ -4256,13 +4255,6 @@ CompileFunction(JSContext* cx, const ReadOnlyCompileOptions& optionsArg,
return false;
}
- Rooted<PropertyNameVector> formals(cx, PropertyNameVector(cx));
- for (unsigned i = 0; i < nargs; i++) {
- RootedAtom argAtom(cx, Atomize(cx, argnames[i], strlen(argnames[i])));
- if (!argAtom || !formals.append(argAtom->asPropertyName()))
- return false;
- }
-
fun.set(NewScriptedFunction(cx, 0, JSFunction::INTERPRETED_NORMAL, funAtom,
/* proto = */ nullptr,
gc::AllocKind::FUNCTION, TenuredObject,
@@ -4275,7 +4267,45 @@ CompileFunction(JSContext* cx, const ReadOnlyCompileOptions& optionsArg,
MOZ_ASSERT_IF(!IsGlobalLexicalEnvironment(enclosingEnv),
enclosingScope->hasOnChain(ScopeKind::NonSyntactic));
- if (!frontend::CompileFunctionBody(cx, fun, optionsArg, formals, srcBuf, enclosingScope))
+ if (!frontend::CompileStandaloneFunction(cx, fun, optionsArg, srcBuf,
+ Some(parameterListEnd), enclosingScope))
+ {
+ return false;
+ }
+
+ return true;
+}
+
+static MOZ_MUST_USE bool
+BuildFunctionString(unsigned nargs, const char* const* argnames,
+ const SourceBufferHolder& srcBuf, StringBuffer* out,
+ uint32_t* parameterListEnd)
+{
+ MOZ_ASSERT(out);
+ MOZ_ASSERT(parameterListEnd);
+
+ if (!out->ensureTwoByteChars())
+ return false;
+ if (!out->append("("))
+ return false;
+ for (unsigned i = 0; i < nargs; i++) {
+ if (i != 0) {
+ if (!out->append(", "))
+ return false;
+ }
+ if (!out->append(argnames[i], strlen(argnames[i])))
+ return false;
+ }
+
+ // Remember the position of ")".
+ *parameterListEnd = out->length();
+ MOZ_ASSERT(FunctionConstructorMedialSigils[0] == ')');
+
+ if (!out->append(FunctionConstructorMedialSigils))
+ return false;
+ if (!out->append(srcBuf.get(), srcBuf.length()))
+ return false;
+ if (!out->append(FunctionConstructorFinalBrace))
return false;
return true;
@@ -4291,7 +4321,16 @@ JS::CompileFunction(JSContext* cx, AutoObjectVector& envChain,
RootedScope scope(cx);
if (!CreateNonSyntacticEnvironmentChain(cx, envChain, &env, &scope))
return false;
- return CompileFunction(cx, options, name, nargs, argnames, srcBuf, env, scope, fun);
+
+ uint32_t parameterListEnd;
+ StringBuffer funStr(cx);
+ if (!BuildFunctionString(nargs, argnames, srcBuf, &funStr, &parameterListEnd))
+ return false;
+
+ size_t newLen = funStr.length();
+ SourceBufferHolder newSrcBuf(funStr.stealChars(), newLen, SourceBufferHolder::GiveOwnership);
+
+ return CompileFunction(cx, options, name, newSrcBuf, parameterListEnd, env, scope, fun);
}
JS_PUBLIC_API(bool)
diff --git a/js/src/jsapi.h b/js/src/jsapi.h
index 2d6ff462c..989abe47c 100644
--- a/js/src/jsapi.h
+++ b/js/src/jsapi.h
@@ -650,7 +650,8 @@ typedef enum JSExnType {
JSEXN_DEBUGGEEWOULDRUN,
JSEXN_WASMCOMPILEERROR,
JSEXN_WASMRUNTIMEERROR,
- JSEXN_WARN,
+ JSEXN_ERROR_LIMIT,
+ JSEXN_WARN = JSEXN_ERROR_LIMIT,
JSEXN_LIMIT
} JSExnType;
@@ -874,11 +875,7 @@ class MOZ_STACK_CLASS SourceBufferHolder final
#define JSFUN_CONSTRUCTOR 0x400 /* native that can be called as a ctor */
-// 0x800 /* Unused */
-
-#define JSFUN_HAS_REST 0x1000 /* function has ...rest parameter. */
-
-#define JSFUN_FLAGS_MASK 0x1e00 /* | of all the JSFUN_* flags */
+#define JSFUN_FLAGS_MASK 0x600 /* | of all the JSFUN_* flags */
/*
* If set, will allow redefining a non-configurable property, but only on a
@@ -1102,7 +1099,8 @@ class JS_PUBLIC_API(ContextOptions) {
dumpStackOnDebuggeeWouldRun_(false),
werror_(false),
strictMode_(false),
- extraWarnings_(false)
+ extraWarnings_(false),
+ arrayProtoValues_(true)
{
}
@@ -1226,6 +1224,12 @@ class JS_PUBLIC_API(ContextOptions) {
return *this;
}
+ bool arrayProtoValues() const { return arrayProtoValues_; }
+ ContextOptions& setArrayProtoValues(bool flag) {
+ arrayProtoValues_ = flag;
+ return *this;
+ }
+
private:
bool baseline_ : 1;
bool ion_ : 1;
@@ -1241,6 +1245,7 @@ class JS_PUBLIC_API(ContextOptions) {
bool werror_ : 1;
bool strictMode_ : 1;
bool extraWarnings_ : 1;
+ bool arrayProtoValues_ : 1;
};
JS_PUBLIC_API(ContextOptions&)
@@ -6167,6 +6172,12 @@ class MOZ_STACK_CLASS JS_PUBLIC_API(ForOfIterator) {
bool next(JS::MutableHandleValue val, bool* done);
/**
+ * Close the iterator.
+ * For the case that completion type is throw.
+ */
+ void closeThrow();
+
+ /**
* If initialized with throwOnNonCallable = false, check whether
* the value is iterable.
*/
@@ -6619,5 +6630,14 @@ SetGetPerformanceGroupsCallback(JSContext*, GetGroupsCallback, void*);
} /* namespace js */
+namespace js {
+
+enum class CompletionKind {
+ Normal,
+ Return,
+ Throw
+};
+
+} /* namespace js */
#endif /* jsapi_h */
diff --git a/js/src/jsarray.cpp b/js/src/jsarray.cpp
index 9cbeff6a2..7a67c0095 100644
--- a/js/src/jsarray.cpp
+++ b/js/src/jsarray.cpp
@@ -3165,9 +3165,7 @@ static const JSFunctionSpec array_methods[] = {
JS_SELF_HOSTED_SYM_FN(iterator, "ArrayValues", 0,0),
JS_SELF_HOSTED_FN("entries", "ArrayEntries", 0,0),
JS_SELF_HOSTED_FN("keys", "ArrayKeys", 0,0),
-#ifdef NIGHTLY_BUILD
JS_SELF_HOSTED_FN("values", "ArrayValues", 0,0),
-#endif
/* ES7 additions */
JS_SELF_HOSTED_FN("includes", "ArrayIncludes", 2,0),
diff --git a/js/src/jsatom.cpp b/js/src/jsatom.cpp
index 3f8e8d8f8..2a3c58638 100644
--- a/js/src/jsatom.cpp
+++ b/js/src/jsatom.cpp
@@ -510,6 +510,14 @@ ToAtomSlow(ExclusiveContext* cx, typename MaybeRooted<Value, allowGC>::HandleTyp
return v.toBoolean() ? cx->names().true_ : cx->names().false_;
if (v.isNull())
return cx->names().null;
+ if (v.isSymbol()) {
+ if (cx->shouldBeJSContext() && allowGC) {
+ JS_ReportErrorNumberASCII(cx->asJSContext(), GetErrorMessage, nullptr,
+ JSMSG_SYMBOL_TO_STRING);
+ }
+ return nullptr;
+ }
+ MOZ_ASSERT(v.isUndefined());
return cx->names().undefined;
}
diff --git a/js/src/jscntxt.cpp b/js/src/jscntxt.cpp
index 3ffd9ad7b..31d62332d 100644
--- a/js/src/jscntxt.cpp
+++ b/js/src/jscntxt.cpp
@@ -803,7 +803,7 @@ js::ReportMissingArg(JSContext* cx, HandleValue v, unsigned arg)
SprintfLiteral(argbuf, "%u", arg);
if (IsFunctionObject(v)) {
- RootedAtom name(cx, v.toObject().as<JSFunction>().name());
+ RootedAtom name(cx, v.toObject().as<JSFunction>().explicitName());
bytes = DecompileValueGenerator(cx, JSDVG_SEARCH_STACK, v, name);
if (!bytes)
return;
diff --git a/js/src/jsdate.cpp b/js/src/jsdate.cpp
index d73fb93d2..ccaeda2a3 100644..100755
--- a/js/src/jsdate.cpp
+++ b/js/src/jsdate.cpp
@@ -1232,7 +1232,10 @@ date_parse(JSContext* cx, unsigned argc, Value* vp)
static ClippedTime
NowAsMillis()
{
- return TimeClip(static_cast<double>(PRMJ_Now()) / PRMJ_USEC_PER_MSEC);
+ const double maxResolutionMs = 2;
+ double timestamp = static_cast<double>(PRMJ_Now()) / PRMJ_USEC_PER_MSEC;
+ timestamp = floor(timestamp / maxResolutionMs) * maxResolutionMs;
+ return TimeClip(timestamp);
}
bool
diff --git a/js/src/jsexn.cpp b/js/src/jsexn.cpp
index d17c6f8b7..9a8e364ed 100644
--- a/js/src/jsexn.cpp
+++ b/js/src/jsexn.cpp
@@ -48,18 +48,35 @@ using mozilla::PodArrayZero;
static void
exn_finalize(FreeOp* fop, JSObject* obj);
-bool
-Error(JSContext* cx, unsigned argc, Value* vp);
-
static bool
exn_toSource(JSContext* cx, unsigned argc, Value* vp);
-static const JSPropertySpec exception_properties[] = {
- JS_PSGS("stack", ErrorObject::getStack, ErrorObject::setStack, 0),
- JS_PS_END
+#define IMPLEMENT_ERROR_PROTO_CLASS(name) \
+ { \
+ js_Object_str, \
+ JSCLASS_HAS_CACHED_PROTO(JSProto_##name), \
+ JS_NULL_CLASS_OPS, \
+ &ErrorObject::classSpecs[JSProto_##name - JSProto_Error] \
+ }
+
+const Class
+ErrorObject::protoClasses[JSEXN_ERROR_LIMIT] = {
+ IMPLEMENT_ERROR_PROTO_CLASS(Error),
+
+ IMPLEMENT_ERROR_PROTO_CLASS(InternalError),
+ IMPLEMENT_ERROR_PROTO_CLASS(EvalError),
+ IMPLEMENT_ERROR_PROTO_CLASS(RangeError),
+ IMPLEMENT_ERROR_PROTO_CLASS(ReferenceError),
+ IMPLEMENT_ERROR_PROTO_CLASS(SyntaxError),
+ IMPLEMENT_ERROR_PROTO_CLASS(TypeError),
+ IMPLEMENT_ERROR_PROTO_CLASS(URIError),
+
+ IMPLEMENT_ERROR_PROTO_CLASS(DebuggeeWouldRun),
+ IMPLEMENT_ERROR_PROTO_CLASS(CompileError),
+ IMPLEMENT_ERROR_PROTO_CLASS(RuntimeError)
};
-static const JSFunctionSpec exception_methods[] = {
+static const JSFunctionSpec error_methods[] = {
#if JS_HAS_TOSOURCE
JS_FN(js_toSource_str, exn_toSource, 0, 0),
#endif
@@ -67,6 +84,92 @@ static const JSFunctionSpec exception_methods[] = {
JS_FS_END
};
+static const JSPropertySpec error_properties[] = {
+ JS_STRING_PS("message", "", 0),
+ JS_STRING_PS("name", "Error", 0),
+ // Only Error.prototype has .stack!
+ JS_PSGS("stack", ErrorObject::getStack, ErrorObject::setStack, 0),
+ JS_PS_END
+};
+
+#define IMPLEMENT_ERROR_PROPERTIES(name) \
+ { \
+ JS_STRING_PS("message", "", 0), \
+ JS_STRING_PS("name", #name, 0), \
+ JS_PS_END \
+ }
+
+static const JSPropertySpec other_error_properties[JSEXN_ERROR_LIMIT - 1][3] = {
+ IMPLEMENT_ERROR_PROPERTIES(InternalError),
+ IMPLEMENT_ERROR_PROPERTIES(EvalError),
+ IMPLEMENT_ERROR_PROPERTIES(RangeError),
+ IMPLEMENT_ERROR_PROPERTIES(ReferenceError),
+ IMPLEMENT_ERROR_PROPERTIES(SyntaxError),
+ IMPLEMENT_ERROR_PROPERTIES(TypeError),
+ IMPLEMENT_ERROR_PROPERTIES(URIError),
+ IMPLEMENT_ERROR_PROPERTIES(DebuggeeWouldRun),
+ IMPLEMENT_ERROR_PROPERTIES(CompileError),
+ IMPLEMENT_ERROR_PROPERTIES(RuntimeError)
+};
+
+#define IMPLEMENT_NATIVE_ERROR_SPEC(name) \
+ { \
+ ErrorObject::createConstructor, \
+ ErrorObject::createProto, \
+ nullptr, \
+ nullptr, \
+ nullptr, \
+ other_error_properties[JSProto_##name - JSProto_Error - 1], \
+ nullptr, \
+ JSProto_Error \
+ }
+
+#define IMPLEMENT_NONGLOBAL_ERROR_SPEC(name) \
+ { \
+ ErrorObject::createConstructor, \
+ ErrorObject::createProto, \
+ nullptr, \
+ nullptr, \
+ nullptr, \
+ other_error_properties[JSProto_##name - JSProto_Error - 1], \
+ nullptr, \
+ JSProto_Error | ClassSpec::DontDefineConstructor \
+ }
+
+const ClassSpec
+ErrorObject::classSpecs[JSEXN_ERROR_LIMIT] = {
+ {
+ ErrorObject::createConstructor,
+ ErrorObject::createProto,
+ nullptr,
+ nullptr,
+ error_methods,
+ error_properties
+ },
+
+ IMPLEMENT_NATIVE_ERROR_SPEC(InternalError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(EvalError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(RangeError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(ReferenceError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(SyntaxError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(TypeError),
+ IMPLEMENT_NATIVE_ERROR_SPEC(URIError),
+
+ IMPLEMENT_NONGLOBAL_ERROR_SPEC(DebuggeeWouldRun),
+ IMPLEMENT_NONGLOBAL_ERROR_SPEC(CompileError),
+ IMPLEMENT_NONGLOBAL_ERROR_SPEC(RuntimeError)
+};
+
+#define IMPLEMENT_ERROR_CLASS(name) \
+ { \
+ js_Error_str, /* yes, really */ \
+ JSCLASS_HAS_CACHED_PROTO(JSProto_##name) | \
+ JSCLASS_HAS_RESERVED_SLOTS(ErrorObject::RESERVED_SLOTS) | \
+ JSCLASS_BACKGROUND_FINALIZE, \
+ &ErrorObjectClassOps, \
+ &ErrorObject::classSpecs[JSProto_##name - JSProto_Error ] \
+ }
+
static const ClassOps ErrorObjectClassOps = {
nullptr, /* addProperty */
nullptr, /* delProperty */
@@ -82,67 +185,20 @@ static const ClassOps ErrorObjectClassOps = {
nullptr, /* trace */
};
-#define IMPLEMENT_ERROR_CLASS(name, classSpecPtr) \
- { \
- js_Error_str, /* yes, really */ \
- JSCLASS_HAS_CACHED_PROTO(JSProto_##name) | \
- JSCLASS_HAS_RESERVED_SLOTS(ErrorObject::RESERVED_SLOTS) | \
- JSCLASS_BACKGROUND_FINALIZE, \
- &ErrorObjectClassOps, \
- classSpecPtr \
- }
-
-const ClassSpec
-ErrorObject::errorClassSpec_ = {
- ErrorObject::createConstructor,
- ErrorObject::createProto,
- nullptr,
- nullptr,
- exception_methods,
- exception_properties,
- nullptr,
- 0
-};
-
-const ClassSpec
-ErrorObject::subErrorClassSpec_ = {
- ErrorObject::createConstructor,
- ErrorObject::createProto,
- nullptr,
- nullptr,
- nullptr,
- nullptr,
- nullptr,
- JSProto_Error
-};
-
-const ClassSpec
-ErrorObject::nonGlobalErrorClassSpec_ = {
- ErrorObject::createConstructor,
- ErrorObject::createProto,
- nullptr,
- nullptr,
- exception_methods,
- exception_properties,
- nullptr,
- JSProto_Error | ClassSpec::DontDefineConstructor
-};
-
const Class
-ErrorObject::classes[JSEXN_LIMIT] = {
- IMPLEMENT_ERROR_CLASS(Error, &ErrorObject::errorClassSpec_),
- IMPLEMENT_ERROR_CLASS(InternalError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(EvalError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(RangeError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(ReferenceError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(SyntaxError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(TypeError, &ErrorObject::subErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(URIError, &ErrorObject::subErrorClassSpec_),
-
+ErrorObject::classes[JSEXN_ERROR_LIMIT] = {
+ IMPLEMENT_ERROR_CLASS(Error),
+ IMPLEMENT_ERROR_CLASS(InternalError),
+ IMPLEMENT_ERROR_CLASS(EvalError),
+ IMPLEMENT_ERROR_CLASS(RangeError),
+ IMPLEMENT_ERROR_CLASS(ReferenceError),
+ IMPLEMENT_ERROR_CLASS(SyntaxError),
+ IMPLEMENT_ERROR_CLASS(TypeError),
+ IMPLEMENT_ERROR_CLASS(URIError),
// These Error subclasses are not accessible via the global object:
- IMPLEMENT_ERROR_CLASS(DebuggeeWouldRun, &ErrorObject::nonGlobalErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(CompileError, &ErrorObject::nonGlobalErrorClassSpec_),
- IMPLEMENT_ERROR_CLASS(RuntimeError, &ErrorObject::nonGlobalErrorClassSpec_)
+ IMPLEMENT_ERROR_CLASS(DebuggeeWouldRun),
+ IMPLEMENT_ERROR_CLASS(CompileError),
+ IMPLEMENT_ERROR_CLASS(RuntimeError)
};
JSErrorReport*
@@ -454,35 +510,41 @@ exn_toSource(JSContext* cx, unsigned argc, Value* vp)
/* static */ JSObject*
ErrorObject::createProto(JSContext* cx, JSProtoKey key)
{
- RootedObject errorProto(cx, GenericCreatePrototype(cx, key));
- if (!errorProto)
- return nullptr;
-
- Rooted<ErrorObject*> err(cx, &errorProto->as<ErrorObject>());
- RootedString emptyStr(cx, cx->names().empty);
JSExnType type = ExnTypeFromProtoKey(key);
- if (!ErrorObject::init(cx, err, type, nullptr, emptyStr, nullptr, 0, 0, emptyStr))
- return nullptr;
- // The various prototypes also have .name in addition to the normal error
- // instance properties.
- RootedPropertyName name(cx, ClassName(key, cx));
- RootedValue nameValue(cx, StringValue(name));
- if (!DefineProperty(cx, err, cx->names().name, nameValue, nullptr, nullptr, 0))
+ if (type == JSEXN_ERR)
+ return cx->global()->createBlankPrototype(cx, &ErrorObject::protoClasses[JSEXN_ERR]);
+
+ RootedObject protoProto(cx, GlobalObject::getOrCreateErrorPrototype(cx, cx->global()));
+ if (!protoProto)
return nullptr;
- return errorProto;
+ return cx->global()->createBlankPrototypeInheriting(cx, &ErrorObject::protoClasses[type],
+ protoProto);
}
/* static */ JSObject*
ErrorObject::createConstructor(JSContext* cx, JSProtoKey key)
{
+ JSExnType type = ExnTypeFromProtoKey(key);
RootedObject ctor(cx);
- ctor = GenericCreateConstructor<Error, 1, gc::AllocKind::FUNCTION_EXTENDED>(cx, key);
+
+ if (type == JSEXN_ERR) {
+ ctor = GenericCreateConstructor<Error, 1, gc::AllocKind::FUNCTION_EXTENDED>(cx, key);
+ } else {
+ RootedFunction proto(cx, GlobalObject::getOrCreateErrorConstructor(cx, cx->global()));
+ if (!proto)
+ return nullptr;
+
+ ctor = NewFunctionWithProto(cx, Error, 1, JSFunction::NATIVE_CTOR, nullptr,
+ ClassName(key, cx), proto, gc::AllocKind::FUNCTION_EXTENDED,
+ SingletonObject);
+ }
+
if (!ctor)
return nullptr;
- ctor->as<JSFunction>().setExtendedSlot(0, Int32Value(ExnTypeFromProtoKey(key)));
+ ctor->as<JSFunction>().setExtendedSlot(0, Int32Value(type));
return ctor;
}
diff --git a/js/src/jsexn.h b/js/src/jsexn.h
index a63c70909..ae6335209 100644
--- a/js/src/jsexn.h
+++ b/js/src/jsexn.h
@@ -85,10 +85,17 @@ ExnTypeFromProtoKey(JSProtoKey key)
{
JSExnType type = static_cast<JSExnType>(key - JSProto_Error);
MOZ_ASSERT(type >= JSEXN_ERR);
- MOZ_ASSERT(type < JSEXN_WARN);
+ MOZ_ASSERT(type < JSEXN_ERROR_LIMIT);
return type;
}
+static inline bool
+IsErrorProtoKey(JSProtoKey key)
+{
+ JSExnType type = static_cast<JSExnType>(key - JSProto_Error);
+ return type >= JSEXN_ERR && type < JSEXN_ERROR_LIMIT;
+}
+
class AutoClearPendingException
{
JSContext* cx;
diff --git a/js/src/jsfun.cpp b/js/src/jsfun.cpp
index c952441ad..bcb0da80b 100644
--- a/js/src/jsfun.cpp
+++ b/js/src/jsfun.cpp
@@ -12,6 +12,7 @@
#include "mozilla/ArrayUtils.h"
#include "mozilla/CheckedInt.h"
+#include "mozilla/Maybe.h"
#include "mozilla/PodOperations.h"
#include "mozilla/Range.h"
@@ -60,8 +61,10 @@ using namespace js::gc;
using namespace js::frontend;
using mozilla::ArrayLength;
+using mozilla::Maybe;
using mozilla::PodCopy;
using mozilla::RangedPtr;
+using mozilla::Some;
static bool
fun_enumerate(JSContext* cx, HandleObject obj)
@@ -559,7 +562,7 @@ js::XDRInterpretedFunction(XDRState<mode>* xdr, HandleScope enclosingScope,
return false;
}
- if (fun->name() || fun->hasGuessedAtom())
+ if (fun->explicitName() || fun->hasCompileTimeName() || fun->hasGuessedAtom())
firstword |= HasAtom;
if (fun->isStarGenerator())
@@ -985,19 +988,19 @@ js::FindBody(JSContext* cx, HandleFunction fun, HandleLinearString src, size_t*
}
JSString*
-js::FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen)
+js::FunctionToString(JSContext* cx, HandleFunction fun, bool prettyPrint)
{
if (fun->isInterpretedLazy() && !fun->getOrCreateScript(cx))
return nullptr;
if (IsAsmJSModule(fun))
- return AsmJSModuleToString(cx, fun, !lambdaParen);
+ return AsmJSModuleToString(cx, fun, !prettyPrint);
if (IsAsmJSFunction(fun))
return AsmJSFunctionToString(cx, fun);
if (IsWrappedAsyncFunction(fun)) {
RootedFunction unwrapped(cx, GetUnwrappedAsyncFunction(fun));
- return FunctionToString(cx, unwrapped, lambdaParen);
+ return FunctionToString(cx, unwrapped, prettyPrint);
}
StringBuffer out(cx);
@@ -1023,11 +1026,10 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen)
bool funIsMethodOrNonArrowLambda = (fun->isLambda() && !fun->isArrow()) || fun->isMethod() ||
fun->isGetter() || fun->isSetter();
+ bool haveSource = fun->isInterpreted() && !fun->isSelfHostedBuiltin();
// If we're not in pretty mode, put parentheses around lambda functions and methods.
- if (fun->isInterpreted() && !lambdaParen && funIsMethodOrNonArrowLambda &&
- !fun->isSelfHostedBuiltin())
- {
+ if (haveSource && !prettyPrint && funIsMethodOrNonArrowLambda) {
if (!out.append("("))
return nullptr;
}
@@ -1040,12 +1042,11 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen)
if (!ok)
return nullptr;
}
- if (fun->name()) {
- if (!out.append(fun->name()))
+ if (fun->explicitName()) {
+ if (!out.append(fun->explicitName()))
return nullptr;
}
- bool haveSource = fun->isInterpreted() && !fun->isSelfHostedBuiltin();
if (haveSource && !script->scriptSource()->hasSourceData() &&
!JSScript::loadSource(cx, script->scriptSource(), &haveSource))
{
@@ -1056,54 +1057,10 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen)
if (!src)
return nullptr;
- // The source data for functions created by calling the Function
- // constructor is only the function's body. This depends on the fact,
- // asserted below, that in Function("function f() {}"), the inner
- // function's sourceStart points to the '(', not the 'f'.
- bool funCon = !fun->isArrow() &&
- script->sourceStart() == 0 &&
- script->sourceEnd() == script->scriptSource()->length() &&
- script->scriptSource()->argumentsNotIncluded();
-
- // Functions created with the constructor can't be arrow functions or
- // expression closures.
- MOZ_ASSERT_IF(funCon, !fun->isArrow());
- MOZ_ASSERT_IF(funCon, !fun->isExprBody());
- MOZ_ASSERT_IF(!funCon && !fun->isArrow(),
- src->length() > 0 && src->latin1OrTwoByteChar(0) == '(');
-
- bool buildBody = funCon;
- if (buildBody) {
- // This function was created with the Function constructor. We don't
- // have source for the arguments, so we have to generate that. Part
- // of bug 755821 should be cobbling the arguments passed into the
- // Function constructor into the source string.
- if (!out.append("("))
- return nullptr;
-
- // Fish out the argument names.
- MOZ_ASSERT(script->numArgs() == fun->nargs());
-
- BindingIter bi(script);
- for (unsigned i = 0; i < fun->nargs(); i++, bi++) {
- MOZ_ASSERT(bi.argumentSlot() == i);
- if (i && !out.append(", "))
- return nullptr;
- if (i == unsigned(fun->nargs() - 1) && fun->hasRest() && !out.append("..."))
- return nullptr;
- if (!out.append(bi.name()))
- return nullptr;
- }
- if (!out.append(") {\n"))
- return nullptr;
- }
if (!out.append(src))
return nullptr;
- if (buildBody) {
- if (!out.append("\n}"))
- return nullptr;
- }
- if (!lambdaParen && funIsMethodOrNonArrowLambda) {
+
+ if (!prettyPrint && funIsMethodOrNonArrowLambda) {
if (!out.append(")"))
return nullptr;
}
@@ -1114,8 +1071,6 @@ js::FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen)
{
return nullptr;
}
- if (!lambdaParen && fun->isLambda() && !fun->isArrow() && !out.append(")"))
- return nullptr;
} else {
MOZ_ASSERT(!fun->isExprBody());
@@ -1374,8 +1329,7 @@ JSFunction::getLength(JSContext* cx, uint16_t* length)
if (self->isInterpretedLazy() && !self->getOrCreateScript(cx))
return false;
- *length = self->hasScript() ? self->nonLazyScript()->funLength()
- : (self->nargs() - self->hasRest());
+ *length = self->isNative() ? self->nargs() : self->nonLazyScript()->funLength();
return true;
}
@@ -1410,14 +1364,14 @@ JSFunction::getUnresolvedName(JSContext* cx)
if (isClassConstructor()) {
// It's impossible to have an empty named class expression. We use
// empty as a sentinel when creating default class constructors.
- MOZ_ASSERT(name() != cx->names().empty);
+ MOZ_ASSERT(explicitOrCompileTimeName() != cx->names().empty);
// Unnamed class expressions should not get a .name property at all.
- return name();
+ return explicitOrCompileTimeName();
}
- // Returns the empty string for unnamed functions (FIXME: bug 883377).
- return name() != nullptr ? name() : cx->names().empty;
+ return explicitOrCompileTimeName() != nullptr ? explicitOrCompileTimeName()
+ : cx->names().empty;
}
static const js::Value&
@@ -1657,17 +1611,6 @@ fun_isGenerator(JSContext* cx, unsigned argc, Value* vp)
return true;
}
-/*
- * Report "malformed formal parameter" iff no illegal char or similar scanner
- * error was already reported.
- */
-static bool
-OnBadFormal(JSContext* cx)
-{
- JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_BAD_FORMAL);
- return false;
-}
-
const JSFunctionSpec js::function_methods[] = {
#if JS_HAS_TOSOURCE
JS_FN(js_toSource_str, fun_toSource, 0,0),
@@ -1676,18 +1619,17 @@ const JSFunctionSpec js::function_methods[] = {
JS_FN(js_apply_str, fun_apply, 2,0),
JS_FN(js_call_str, fun_call, 1,0),
JS_FN("isGenerator", fun_isGenerator,0,0),
- JS_SELF_HOSTED_FN("bind", "FunctionBind", 2, JSFUN_HAS_REST),
+ JS_SELF_HOSTED_FN("bind", "FunctionBind", 2, 0),
JS_SYM_FN(hasInstance, fun_symbolHasInstance, 1, JSPROP_READONLY | JSPROP_PERMANENT),
JS_FS_END
};
+// ES 2017 draft rev 0f10dba4ad18de92d47d421f378233a2eae8f077 19.2.1.1.1.
static bool
-FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind generatorKind,
+FunctionConstructor(JSContext* cx, const CallArgs& args, GeneratorKind generatorKind,
FunctionAsyncKind asyncKind)
{
- CallArgs args = CallArgsFromVp(argc, vp);
-
- /* Block this call if security callbacks forbid it. */
+ // Block this call if security callbacks forbid it.
Rooted<GlobalObject*> global(cx, &args.callee().global());
if (!GlobalObject::isRuntimeCodeGenEnabled(cx, global)) {
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_CSP_BLOCKED_FUNCTION);
@@ -1719,82 +1661,65 @@ FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind gener
introducerFilename = maybeScript->scriptSource()->introducerFilename();
CompileOptions options(cx);
+ // Use line 0 to make the function body starts from line 1.
options.setMutedErrors(mutedErrors)
- .setFileAndLine(filename, 1)
+ .setFileAndLine(filename, 0)
.setNoScriptRval(false)
.setIntroductionInfo(introducerFilename, introductionType, lineno, maybeScript, pcOffset);
- Vector<char16_t> paramStr(cx);
- RootedString bodyText(cx);
+ StringBuffer sb(cx);
- if (args.length() == 0) {
- bodyText = cx->names().empty;
- } else {
- // Collect the function-argument arguments into one string, separated
- // by commas, then make a tokenstream from that string, and scan it to
- // get the arguments. We need to throw the full scanner at the
- // problem because the argument string may contain comments, newlines,
- // destructuring arguments, and similar manner of insanities. ("I have
- // a feeling we're not in simple-comma-separated-parameters land any
- // more, Toto....")
- //
- // XXX It'd be better if the parser provided utility methods to parse
- // an argument list, and to parse a function body given a parameter
- // list. But our parser provides no such pleasant interface now.
- unsigned n = args.length() - 1;
+ if (!sb.append('('))
+ return false;
- // Convert the parameters-related arguments to strings, and determine
- // the length of the string containing the overall parameter list.
- mozilla::CheckedInt<uint32_t> paramStrLen = 0;
+ if (args.length() > 1) {
RootedString str(cx);
+
+ // Steps 5-6, 9.
+ unsigned n = args.length() - 1;
+
for (unsigned i = 0; i < n; i++) {
+ // Steps 9.a-b, 9.d.i-ii.
str = ToString<CanGC>(cx, args[i]);
if (!str)
return false;
- args[i].setString(str);
- paramStrLen += str->length();
- }
-
- // Tack in space for any combining commas.
- if (n > 0)
- paramStrLen += n - 1;
+ // Steps 9.b, 9.d.iii.
+ if (!sb.append(str))
+ return false;
- // Check for integer and string-size overflow.
- if (!paramStrLen.isValid() || paramStrLen.value() > JSString::MAX_LENGTH) {
- ReportAllocationOverflow(cx);
- return false;
+ if (i < args.length() - 2) {
+ // Step 9.d.iii.
+ if (!sb.append(", "))
+ return false;
+ }
}
+ }
- uint32_t paramsLen = paramStrLen.value();
-
- // Fill a vector with the comma-joined arguments. Careful! This
- // string is *not* null-terminated!
- MOZ_ASSERT(paramStr.length() == 0);
- if (!paramStr.growBy(paramsLen)) {
- ReportOutOfMemory(cx);
- return false;
- }
+ // Remember the position of ")".
+ Maybe<uint32_t> parameterListEnd = Some(uint32_t(sb.length()));
+ MOZ_ASSERT(FunctionConstructorMedialSigils[0] == ')');
- char16_t* cp = paramStr.begin();
- for (unsigned i = 0; i < n; i++) {
- JSLinearString* argLinear = args[i].toString()->ensureLinear(cx);
- if (!argLinear)
- return false;
+ if (!sb.append(FunctionConstructorMedialSigils))
+ return false;
- CopyChars(cp, *argLinear);
- cp += argLinear->length();
+ if (args.length() > 0) {
+ // Steps 7-8, 10.
+ RootedString body(cx, ToString<CanGC>(cx, args[args.length() - 1]));
+ if (!body || !sb.append(body))
+ return false;
+ }
- if (i + 1 < n)
- *cp++ = ',';
- }
+ if (!sb.append(FunctionConstructorFinalBrace))
+ return false;
- MOZ_ASSERT(cp == paramStr.end());
+ // The parser only accepts two byte strings.
+ if (!sb.ensureTwoByteChars())
+ return false;
- bodyText = ToString(cx, args[n]);
- if (!bodyText)
- return false;
- }
+ RootedString functionText(cx, sb.finishString());
+ if (!functionText)
+ return false;
/*
* NB: (new Function) is not lexically closed by its caller, it's just an
@@ -1803,18 +1728,23 @@ FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind gener
* and so would a call to f from another top-level's script or function.
*/
RootedAtom anonymousAtom(cx, cx->names().anonymous);
+
+ // Step 24.
RootedObject proto(cx);
- if (isStarGenerator) {
- // Unwrapped function of async function should use GeneratorFunction,
- // while wrapped function isn't generator.
+ if (!isAsync) {
+ if (!GetPrototypeFromCallableConstructor(cx, args, &proto))
+ return false;
+ }
+
+ // Step 4.d, use %Generator% as the fallback prototype.
+ // Also use %Generator% for the unwrapped function of async functions.
+ if (!proto && isStarGenerator) {
proto = GlobalObject::getOrCreateStarGeneratorFunctionPrototype(cx, global);
if (!proto)
return false;
- } else {
- if (!GetPrototypeFromCallableConstructor(cx, args, &proto))
- return false;
}
+ // Step 25-32 (reordered).
RootedObject globalLexical(cx, &global->lexicalEnvironment());
AllocKind allocKind = isAsync ? AllocKind::FUNCTION_EXTENDED : AllocKind::FUNCTION;
RootedFunction fun(cx, NewFunctionWithProto(cx, nullptr, 0,
@@ -1827,81 +1757,11 @@ FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind gener
if (!JSFunction::setTypeForScriptedFunction(cx, fun))
return false;
+ // Steps 2.a-b, 3.a-b, 4.a-b, 11-23.
AutoStableStringChars stableChars(cx);
- if (!stableChars.initTwoByte(cx, bodyText))
+ if (!stableChars.initTwoByte(cx, functionText))
return false;
- bool hasRest = false;
-
- Rooted<PropertyNameVector> formals(cx, PropertyNameVector(cx));
- if (args.length() > 1) {
- // Initialize a tokenstream to parse the new function's arguments. No
- // StrictModeGetter is needed because this TokenStream won't report any
- // strict mode errors. Strict mode errors that might be reported here
- // (duplicate argument names, etc.) will be detected when we compile
- // the function body.
- //
- // XXX Bug! We have to parse the body first to determine strictness.
- // We have to know strictness to parse arguments correctly, in case
- // arguments contains a strict mode violation. And we should be
- // using full-fledged arguments parsing here, in order to handle
- // destructuring and other exotic syntaxes.
- AutoKeepAtoms keepAtoms(cx->perThreadData);
- TokenStream ts(cx, options, paramStr.begin(), paramStr.length(),
- /* strictModeGetter = */ nullptr);
- bool yieldIsValidName = ts.versionNumber() < JSVERSION_1_7 && !isStarGenerator;
-
- // The argument string may be empty or contain no tokens.
- TokenKind tt;
- if (!ts.getToken(&tt))
- return false;
- if (tt != TOK_EOF) {
- while (true) {
- // Check that it's a name.
- if (hasRest) {
- ts.reportError(JSMSG_PARAMETER_AFTER_REST);
- return false;
- }
-
- if (tt == TOK_YIELD && yieldIsValidName)
- tt = TOK_NAME;
-
- if (tt != TOK_NAME) {
- if (tt == TOK_TRIPLEDOT) {
- hasRest = true;
- if (!ts.getToken(&tt))
- return false;
- if (tt == TOK_YIELD && yieldIsValidName)
- tt = TOK_NAME;
- if (tt != TOK_NAME) {
- ts.reportError(JSMSG_NO_REST_NAME);
- return false;
- }
- } else {
- return OnBadFormal(cx);
- }
- }
-
- if (!formals.append(ts.currentName()))
- return false;
-
- // Get the next token. Stop on end of stream. Otherwise
- // insist on a comma, get another name, and iterate.
- if (!ts.getToken(&tt))
- return false;
- if (tt == TOK_EOF)
- break;
- if (tt != TOK_COMMA)
- return OnBadFormal(cx);
- if (!ts.getToken(&tt))
- return false;
- }
- }
- }
-
- if (hasRest)
- fun->setHasRest();
-
mozilla::Range<const char16_t> chars = stableChars.twoByteRange();
SourceBufferHolder::Ownership ownership = stableChars.maybeGiveOwnershipToCaller()
? SourceBufferHolder::GiveOwnership
@@ -1909,11 +1769,13 @@ FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind gener
bool ok;
SourceBufferHolder srcBuf(chars.begin().get(), chars.length(), ownership);
if (isAsync)
- ok = frontend::CompileAsyncFunctionBody(cx, &fun, options, formals, srcBuf);
+ ok = frontend::CompileStandaloneAsyncFunction(cx, &fun, options, srcBuf, parameterListEnd);
else if (isStarGenerator)
- ok = frontend::CompileStarGeneratorBody(cx, &fun, options, formals, srcBuf);
+ ok = frontend::CompileStandaloneGenerator(cx, &fun, options, srcBuf, parameterListEnd);
else
- ok = frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf);
+ ok = frontend::CompileStandaloneFunction(cx, &fun, options, srcBuf, parameterListEnd);
+
+ // Step 33.
args.rval().setObject(*fun);
return ok;
}
@@ -1921,24 +1783,47 @@ FunctionConstructor(JSContext* cx, unsigned argc, Value* vp, GeneratorKind gener
bool
js::Function(JSContext* cx, unsigned argc, Value* vp)
{
- return FunctionConstructor(cx, argc, vp, NotGenerator, SyncFunction);
+ CallArgs args = CallArgsFromVp(argc, vp);
+ return FunctionConstructor(cx, args, NotGenerator, SyncFunction);
}
bool
js::Generator(JSContext* cx, unsigned argc, Value* vp)
{
- return FunctionConstructor(cx, argc, vp, StarGenerator, SyncFunction);
+ CallArgs args = CallArgsFromVp(argc, vp);
+ return FunctionConstructor(cx, args, StarGenerator, SyncFunction);
}
bool
js::AsyncFunctionConstructor(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
- if (!FunctionConstructor(cx, argc, vp, StarGenerator, AsyncFunction))
+
+ // Save the callee before its reset in FunctionConstructor().
+ RootedObject newTarget(cx);
+ if (args.isConstructing())
+ newTarget = &args.newTarget().toObject();
+ else
+ newTarget = &args.callee();
+
+ if (!FunctionConstructor(cx, args, StarGenerator, AsyncFunction))
+ return false;
+
+ // ES2017, draft rev 0f10dba4ad18de92d47d421f378233a2eae8f077
+ // 19.2.1.1.1 Runtime Semantics: CreateDynamicFunction, step 24.
+ RootedObject proto(cx);
+ if (!GetPrototypeFromConstructor(cx, newTarget, &proto))
return false;
+ // 19.2.1.1.1, step 4.d, use %AsyncFunctionPrototype% as the fallback.
+ if (!proto) {
+ proto = GlobalObject::getOrCreateAsyncFunctionPrototype(cx, cx->global());
+ if (!proto)
+ return false;
+ }
+
RootedFunction unwrapped(cx, &args.rval().toObject().as<JSFunction>());
- RootedObject wrapped(cx, WrapAsyncFunction(cx, unwrapped));
+ RootedObject wrapped(cx, WrapAsyncFunctionWithProto(cx, unwrapped, proto));
if (!wrapped)
return false;
@@ -2246,34 +2131,115 @@ js::CloneFunctionAndScript(JSContext* cx, HandleFunction fun, HandleObject enclo
*
* Function names are always strings. If id is the well-known @@iterator
* symbol, this returns "[Symbol.iterator]". If a prefix is supplied the final
- * name is |prefix + " " + name|.
+ * name is |prefix + " " + name|. A prefix cannot be supplied if id is a
+ * symbol value.
*
- * Implements step 4 and 5 of SetFunctionName in ES 2016 draft Dec 20, 2015.
+ * Implements steps 3-5 of 9.2.11 SetFunctionName in ES2016.
*/
JSAtom*
-js::IdToFunctionName(JSContext* cx, HandleId id, const char* prefix /* = nullptr */)
+js::IdToFunctionName(JSContext* cx, HandleId id,
+ FunctionPrefixKind prefixKind /* = FunctionPrefixKind::None */)
{
- if (JSID_IS_ATOM(id) && !prefix)
+ // No prefix fastpath.
+ if (JSID_IS_ATOM(id) && prefixKind == FunctionPrefixKind::None)
return JSID_TO_ATOM(id);
- if (JSID_IS_SYMBOL(id) && !prefix) {
+ // Step 3 (implicit).
+
+ // Step 4.
+ if (JSID_IS_SYMBOL(id)) {
+ // Step 4.a.
RootedAtom desc(cx, JSID_TO_SYMBOL(id)->description());
+
+ // Step 4.b, no prefix fastpath.
+ if (!desc && prefixKind == FunctionPrefixKind::None)
+ return cx->names().empty;
+
+ // Step 5 (reordered).
StringBuffer sb(cx);
- if (!sb.append('[') || !sb.append(desc) || !sb.append(']'))
- return nullptr;
+ if (prefixKind == FunctionPrefixKind::Get) {
+ if (!sb.append("get "))
+ return nullptr;
+ } else if (prefixKind == FunctionPrefixKind::Set) {
+ if (!sb.append("set "))
+ return nullptr;
+ }
+
+ // Step 4.b.
+ if (desc) {
+ // Step 4.c.
+ if (!sb.append('[') || !sb.append(desc) || !sb.append(']'))
+ return nullptr;
+ }
return sb.finishAtom();
}
RootedValue idv(cx, IdToValue(id));
- if (!prefix)
- return ToAtom<CanGC>(cx, idv);
+ RootedAtom name(cx, ToAtom<CanGC>(cx, idv));
+ if (!name)
+ return nullptr;
+
+ // Step 5.
+ return NameToFunctionName(cx, name, prefixKind);
+}
+
+JSAtom*
+js::NameToFunctionName(ExclusiveContext* cx, HandleAtom name,
+ FunctionPrefixKind prefixKind /* = FunctionPrefixKind::None */)
+{
+ if (prefixKind == FunctionPrefixKind::None)
+ return name;
StringBuffer sb(cx);
- if (!sb.append(prefix, strlen(prefix)) || !sb.append(' ') || !sb.append(ToAtom<CanGC>(cx, idv)))
+ if (prefixKind == FunctionPrefixKind::Get) {
+ if (!sb.append("get "))
+ return nullptr;
+ } else {
+ if (!sb.append("set "))
+ return nullptr;
+ }
+ if (!sb.append(name))
return nullptr;
return sb.finishAtom();
}
+bool
+js::SetFunctionNameIfNoOwnName(JSContext* cx, HandleFunction fun, HandleValue name,
+ FunctionPrefixKind prefixKind)
+{
+ MOZ_ASSERT(name.isString() || name.isSymbol() || name.isNumber());
+
+ if (fun->isClassConstructor()) {
+ // A class may have static 'name' method or accessor.
+ RootedId nameId(cx, NameToId(cx->names().name));
+ bool result;
+ if (!HasOwnProperty(cx, fun, nameId, &result))
+ return false;
+
+ if (result)
+ return true;
+ } else {
+ // Anonymous function shouldn't have own 'name' property at this point.
+ MOZ_ASSERT(!fun->containsPure(cx->names().name));
+ }
+
+ RootedId id(cx);
+ if (!ValueToId<CanGC>(cx, name, &id))
+ return false;
+
+ RootedAtom funNameAtom(cx, IdToFunctionName(cx, id, prefixKind));
+ if (!funNameAtom)
+ return false;
+
+ RootedValue funNameVal(cx, StringValue(funNameAtom));
+ if (!NativeDefineProperty(cx, fun, cx->names().name, funNameVal, nullptr, nullptr,
+ JSPROP_READONLY))
+ {
+ return false;
+ }
+ return true;
+}
+
JSFunction*
js::DefineFunction(JSContext* cx, HandleObject obj, HandleId id, Native native,
unsigned nargs, unsigned flags, AllocKind allocKind /* = AllocKind::FUNCTION */)
diff --git a/js/src/jsfun.h b/js/src/jsfun.h
index ef4a603d0..d45d112a5 100644
--- a/js/src/jsfun.h
+++ b/js/src/jsfun.h
@@ -28,6 +28,15 @@ static const uint32_t JSSLOT_BOUND_FUNCTION_TARGET = 2;
static const uint32_t JSSLOT_BOUND_FUNCTION_THIS = 3;
static const uint32_t JSSLOT_BOUND_FUNCTION_ARGS = 4;
+static const char FunctionConstructorMedialSigils[] = ") {\n";
+static const char FunctionConstructorFinalBrace[] = "\n}";
+
+enum class FunctionPrefixKind {
+ None,
+ Get,
+ Set
+};
+
class JSFunction : public js::NativeObject
{
public:
@@ -58,7 +67,9 @@ class JSFunction : public js::NativeObject
function-statement) */
SELF_HOSTED = 0x0080, /* function is self-hosted builtin and must not be
decompilable nor constructible. */
- HAS_REST = 0x0100, /* function has a rest (...) parameter */
+ HAS_COMPILE_TIME_NAME = 0x0100, /* function had no explicit name, but a
+ name was set by SetFunctionName
+ at compile time */
INTERPRETED_LAZY = 0x0200, /* function is interpreted but doesn't have a script yet */
RESOLVED_LENGTH = 0x0400, /* f.length has been resolved (see fun_resolve). */
RESOLVED_NAME = 0x0800, /* f.name has been resolved (see fun_resolve). */
@@ -92,7 +103,7 @@ class JSFunction : public js::NativeObject
NO_XDR_FLAGS = RESOLVED_LENGTH | RESOLVED_NAME,
STABLE_ACROSS_CLONES = CONSTRUCTOR | EXPR_BODY | HAS_GUESSED_ATOM | LAMBDA |
- SELF_HOSTED | HAS_REST | FUNCTION_KIND_MASK
+ SELF_HOSTED | HAS_COMPILE_TIME_NAME | FUNCTION_KIND_MASK
};
static_assert((INTERPRETED | INTERPRETED_LAZY) == js::JS_FUNCTION_INTERPRETED_BITS,
@@ -177,10 +188,10 @@ class JSFunction : public js::NativeObject
/* Possible attributes of an interpreted function: */
bool isExprBody() const { return flags() & EXPR_BODY; }
+ bool hasCompileTimeName() const { return flags() & HAS_COMPILE_TIME_NAME; }
bool hasGuessedAtom() const { return flags() & HAS_GUESSED_ATOM; }
bool isLambda() const { return flags() & LAMBDA; }
bool isBoundFunction() const { return flags() & BOUND_FUN; }
- bool hasRest() const { return flags() & HAS_REST; }
bool isInterpretedLazy() const { return flags() & INTERPRETED_LAZY; }
bool hasScript() const { return flags() & INTERPRETED; }
@@ -219,7 +230,7 @@ class JSFunction : public js::NativeObject
}
bool isNamedLambda() const {
- return isLambda() && displayAtom() && !hasGuessedAtom();
+ return isLambda() && displayAtom() && !hasCompileTimeName() && !hasGuessedAtom();
}
bool hasLexicalThis() const {
@@ -261,11 +272,6 @@ class JSFunction : public js::NativeObject
this->nargs_ = nargs;
}
- // Can be called multiple times by the parser.
- void setHasRest() {
- flags_ |= HAS_REST;
- }
-
void setIsBoundFunction() {
MOZ_ASSERT(!isBoundFunction());
flags_ |= BOUND_FUN;
@@ -312,14 +318,12 @@ class JSFunction : public js::NativeObject
JSAtom* getUnresolvedName(JSContext* cx);
- JSAtom* name() const { return hasGuessedAtom() ? nullptr : atom_.get(); }
-
- // Because display names (see Debugger.Object.displayName) are already stored
- // on functions and will always contain a valid es6 function name, as described
- // in "ECMA-262 (2016-02-27) 9.2.11 SetFunctionName," we have opted to save
- // memory by parsing the existing display name when a function's name property
- // is accessed.
- JSAtom* functionName(JSContext* cx) const;
+ JSAtom* explicitName() const {
+ return (hasCompileTimeName() || hasGuessedAtom()) ? nullptr : atom_.get();
+ }
+ JSAtom* explicitOrCompileTimeName() const {
+ return hasGuessedAtom() ? nullptr : atom_.get();
+ }
void initAtom(JSAtom* atom) { atom_.init(atom); }
@@ -329,9 +333,24 @@ class JSFunction : public js::NativeObject
return atom_;
}
+ void setCompileTimeName(JSAtom* atom) {
+ MOZ_ASSERT(!atom_);
+ MOZ_ASSERT(atom);
+ MOZ_ASSERT(!hasGuessedAtom());
+ MOZ_ASSERT(!isClassConstructor());
+ atom_ = atom;
+ flags_ |= HAS_COMPILE_TIME_NAME;
+ }
+ JSAtom* compileTimeName() const {
+ MOZ_ASSERT(hasCompileTimeName());
+ MOZ_ASSERT(atom_);
+ return atom_;
+ }
+
void setGuessedAtom(JSAtom* atom) {
MOZ_ASSERT(!atom_);
MOZ_ASSERT(atom);
+ MOZ_ASSERT(!hasCompileTimeName());
MOZ_ASSERT(!hasGuessedAtom());
atom_ = atom;
flags_ |= HAS_GUESSED_ATOM;
@@ -676,7 +695,16 @@ NewFunctionWithProto(ExclusiveContext* cx, JSNative native, unsigned nargs,
NewFunctionProtoHandling protoHandling = NewFunctionClassProto);
extern JSAtom*
-IdToFunctionName(JSContext* cx, HandleId id, const char* prefix = nullptr);
+IdToFunctionName(JSContext* cx, HandleId id,
+ FunctionPrefixKind prefixKind = FunctionPrefixKind::None);
+
+extern JSAtom*
+NameToFunctionName(ExclusiveContext* cx, HandleAtom name,
+ FunctionPrefixKind prefixKind = FunctionPrefixKind::None);
+
+extern bool
+SetFunctionNameIfNoOwnName(JSContext* cx, HandleFunction fun, HandleValue name,
+ FunctionPrefixKind prefixKind);
extern JSFunction*
DefineFunction(JSContext* cx, HandleObject obj, HandleId id, JSNative native,
@@ -816,7 +844,7 @@ JSFunction::getExtendedSlot(size_t which) const
namespace js {
-JSString* FunctionToString(JSContext* cx, HandleFunction fun, bool lambdaParen);
+JSString* FunctionToString(JSContext* cx, HandleFunction fun, bool prettyPring);
template<XDRMode mode>
bool
diff --git a/js/src/jsfuninlines.h b/js/src/jsfuninlines.h
index 8286a7d6a..e134def61 100644
--- a/js/src/jsfuninlines.h
+++ b/js/src/jsfuninlines.h
@@ -16,7 +16,7 @@ namespace js {
inline const char*
GetFunctionNameBytes(JSContext* cx, JSFunction* fun, JSAutoByteString* bytes)
{
- if (JSAtom* name = fun->name())
+ if (JSAtom* name = fun->explicitName())
return bytes->encodeLatin1(cx, name);
return js_anonymous_str;
}
diff --git a/js/src/jsiter.cpp b/js/src/jsiter.cpp
index 63c81e6af..c1ae5dc15 100644
--- a/js/src/jsiter.cpp
+++ b/js/src/jsiter.cpp
@@ -12,6 +12,7 @@
#include "mozilla/Maybe.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/PodOperations.h"
+#include "mozilla/Unused.h"
#include "jsarray.h"
#include "jsatom.h"
@@ -1229,6 +1230,7 @@ js::CloseIterator(JSContext* cx, HandleObject obj)
}
return LegacyGeneratorObject::close(cx, obj);
}
+
return true;
}
@@ -1246,6 +1248,56 @@ js::UnwindIteratorForException(JSContext* cx, HandleObject obj)
return true;
}
+bool
+js::IteratorCloseForException(JSContext* cx, HandleObject obj)
+{
+ MOZ_ASSERT(cx->isExceptionPending());
+
+ bool isClosingGenerator = cx->isClosingGenerator();
+ JS::AutoSaveExceptionState savedExc(cx);
+
+ // Implements IteratorClose (ES 7.4.6) for exception unwinding. See
+ // also the bytecode generated by BytecodeEmitter::emitIteratorClose.
+
+ // Step 3.
+ //
+ // Get the "return" method.
+ RootedValue returnMethod(cx);
+ if (!GetProperty(cx, obj, obj, cx->names().return_, &returnMethod))
+ return false;
+
+ // Step 4.
+ //
+ // Do nothing if "return" is null or undefined. Throw a TypeError if the
+ // method is not IsCallable.
+ if (returnMethod.isNullOrUndefined())
+ return true;
+ if (!IsCallable(returnMethod))
+ return ReportIsNotFunction(cx, returnMethod);
+
+ // Step 5, 6, 8.
+ //
+ // Call "return" if it is not null or undefined.
+ RootedValue rval(cx);
+ bool ok = Call(cx, returnMethod, obj, &rval);
+ if (isClosingGenerator) {
+ // Closing an iterator is implemented as an exception, but in spec
+ // terms it is a Completion value with [[Type]] return. In this case
+ // we *do* care if the call threw and if it returned an object.
+ if (!ok)
+ return false;
+ if (!rval.isObject())
+ return ThrowCheckIsObject(cx, CheckIsObjectKind::IteratorReturn);
+ } else {
+ // We don't care if the call threw or that it returned an Object, as
+ // Step 6 says if IteratorClose is being called during a throw, the
+ // original throw has primacy.
+ savedExc.restore();
+ }
+
+ return true;
+}
+
void
js::UnwindIteratorForUncatchableException(JSContext* cx, JSObject* obj)
{
diff --git a/js/src/jsiter.h b/js/src/jsiter.h
index 35d7ef118..f11f09b55 100644
--- a/js/src/jsiter.h
+++ b/js/src/jsiter.h
@@ -189,6 +189,9 @@ CloseIterator(JSContext* cx, HandleObject iterObj);
bool
UnwindIteratorForException(JSContext* cx, HandleObject obj);
+bool
+IteratorCloseForException(JSContext* cx, HandleObject obj);
+
void
UnwindIteratorForUncatchableException(JSContext* cx, JSObject* obj);
diff --git a/js/src/jsobj.cpp b/js/src/jsobj.cpp
index a39a4b0a0..b17c845bb 100644
--- a/js/src/jsobj.cpp
+++ b/js/src/jsobj.cpp
@@ -2936,6 +2936,11 @@ DefineFunctionFromSpec(JSContext* cx, HandleObject obj, const JSFunctionSpec* fs
if (!PropertySpecNameToId(cx, fs->name, &id))
return false;
+ if (StandardProtoKeyOrNull(obj) == JSProto_Array && id == NameToId(cx->names().values)) {
+ if (!cx->options().arrayProtoValues())
+ return true;
+ }
+
JSFunction* fun = NewFunctionFromSpec(cx, fs, id);
if (!fun)
return false;
@@ -3298,18 +3303,6 @@ GetObjectSlotNameFunctor::operator()(JS::CallbackTracer* trc, char* buf, size_t
}
}
-bool
-js::ReportGetterOnlyAssignment(JSContext* cx, bool strict)
-{
- return JS_ReportErrorFlagsAndNumberASCII(cx,
- strict
- ? JSREPORT_ERROR
- : JSREPORT_WARNING | JSREPORT_STRICT,
- GetErrorMessage, nullptr,
- JSMSG_GETTER_ONLY);
-}
-
-
/*** Debugging routines **************************************************************************/
#ifdef DEBUG
diff --git a/js/src/jsobj.h b/js/src/jsobj.h
index fbf4e47be..af79131af 100644
--- a/js/src/jsobj.h
+++ b/js/src/jsobj.h
@@ -1320,9 +1320,6 @@ template<XDRMode mode>
bool
XDRObjectLiteral(XDRState<mode>* xdr, MutableHandleObject obj);
-extern bool
-ReportGetterOnlyAssignment(JSContext* cx, bool strict);
-
/*
* Report a TypeError: "so-and-so is not an object".
* Using NotNullObject is usually less code.
diff --git a/js/src/jsopcode.cpp b/js/src/jsopcode.cpp
index 31bbfb471..6adb5401e 100644
--- a/js/src/jsopcode.cpp
+++ b/js/src/jsopcode.cpp
@@ -92,7 +92,8 @@ const char * const js::CodeName[] = {
/************************************************************************/
-#define COUNTS_LEN 16
+static bool
+DecompileArgumentFromStack(JSContext* cx, int formalIndex, char** res);
size_t
js::GetVariableBytecodeLength(jsbytecode* pc)
@@ -460,6 +461,34 @@ BytecodeParser::simulateOp(JSOp op, uint32_t offset, uint32_t* offsetStack, uint
offsetStack[stackDepth] = tmp;
}
break;
+
+ case JSOP_PICK: {
+ jsbytecode* pc = script_->offsetToPC(offset);
+ unsigned n = GET_UINT8(pc);
+ MOZ_ASSERT(ndefs == n + 1);
+ if (offsetStack) {
+ uint32_t top = stackDepth + n;
+ uint32_t tmp = offsetStack[stackDepth];
+ for (uint32_t i = stackDepth; i < top; i++)
+ offsetStack[i] = offsetStack[i + 1];
+ offsetStack[top] = tmp;
+ }
+ break;
+ }
+
+ case JSOP_UNPICK: {
+ jsbytecode* pc = script_->offsetToPC(offset);
+ unsigned n = GET_UINT8(pc);
+ MOZ_ASSERT(ndefs == n + 1);
+ if (offsetStack) {
+ uint32_t top = stackDepth + n;
+ uint32_t tmp = offsetStack[top];
+ for (uint32_t i = top; i > stackDepth; i--)
+ offsetStack[i] = offsetStack[i - 1];
+ offsetStack[stackDepth] = tmp;
+ }
+ break;
+ }
}
stackDepth += ndefs;
return stackDepth;
@@ -1230,6 +1259,24 @@ ExpressionDecompiler::decompilePC(jsbytecode* pc)
return write(loadAtom(pc));
case JSOP_GETARG: {
unsigned slot = GET_ARGNO(pc);
+
+ // For self-hosted scripts that are called from non-self-hosted code,
+ // decompiling the parameter name in the self-hosted script is
+ // unhelpful. Decompile the argument name instead.
+ if (script->selfHosted()) {
+ char* result;
+ if (!DecompileArgumentFromStack(cx, slot, &result))
+ return false;
+
+ // Note that decompiling the argument in the parent frame might
+ // not succeed.
+ if (result) {
+ bool ok = write(result);
+ js_free(result);
+ return ok;
+ }
+ }
+
JSAtom* atom = getArg(slot);
if (!atom)
return false;
@@ -1593,12 +1640,17 @@ DecompileArgumentFromStack(JSContext* cx, int formalIndex, char** res)
MOZ_ASSERT(frameIter.script()->selfHosted());
/*
- * Get the second-to-top frame, the caller of the builtin that called the
- * intrinsic.
+ * Get the second-to-top frame, the non-self-hosted caller of the builtin
+ * that called the intrinsic.
*/
++frameIter;
- if (frameIter.done() || !frameIter.hasScript() || frameIter.compartment() != cx->compartment())
+ if (frameIter.done() ||
+ !frameIter.hasScript() ||
+ frameIter.script()->selfHosted() ||
+ frameIter.compartment() != cx->compartment())
+ {
return true;
+ }
RootedScript script(cx, frameIter.script());
jsbytecode* current = frameIter.pc();
diff --git a/js/src/jsopcode.h b/js/src/jsopcode.h
index 4f7859665..e56eebb2d 100644
--- a/js/src/jsopcode.h
+++ b/js/src/jsopcode.h
@@ -423,6 +423,7 @@ BytecodeFallsThrough(JSOp op)
case JSOP_RETRVAL:
case JSOP_FINALYIELDRVAL:
case JSOP_THROW:
+ case JSOP_THROWMSG:
case JSOP_TABLESWITCH:
return false;
case JSOP_GOSUB:
diff --git a/js/src/jsopcodeinlines.h b/js/src/jsopcodeinlines.h
index cf9c8357a..5b0ce0cf9 100644
--- a/js/src/jsopcodeinlines.h
+++ b/js/src/jsopcodeinlines.h
@@ -27,6 +27,7 @@ GetDefCount(JSScript* script, unsigned offset)
case JSOP_AND:
return 1;
case JSOP_PICK:
+ case JSOP_UNPICK:
/*
* Pick pops and pushes how deep it looks in the stack + 1
* items. i.e. if the stack were |a b[2] c[1] d[0]|, pick 2
@@ -44,7 +45,7 @@ GetUseCount(JSScript* script, unsigned offset)
{
jsbytecode* pc = script->offsetToPC(offset);
- if (JSOp(*pc) == JSOP_PICK)
+ if (JSOp(*pc) == JSOP_PICK || JSOp(*pc) == JSOP_UNPICK)
return pc[1] + 1;
if (CodeSpec[*pc].nuses == -1)
return StackUses(script, pc);
diff --git a/js/src/jsscript.cpp b/js/src/jsscript.cpp
index 10821f26a..e86ceab3d 100644
--- a/js/src/jsscript.cpp
+++ b/js/src/jsscript.cpp
@@ -316,6 +316,7 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
IsLegacyGenerator,
IsStarGenerator,
IsAsync,
+ HasRest,
OwnSource,
ExplicitUseStrict,
SelfHosted,
@@ -431,6 +432,8 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
scriptBits |= (1 << IsStarGenerator);
if (script->asyncKind() == AsyncFunction)
scriptBits |= (1 << IsAsync);
+ if (script->hasRest())
+ scriptBits |= (1 << HasRest);
if (script->hasSingletons())
scriptBits |= (1 << HasSingleton);
if (script->treatAsRunOnce())
@@ -582,6 +585,8 @@ js::XDRScript(XDRState<mode>* xdr, HandleScope scriptEnclosingScope, HandleScrip
if (scriptBits & (1 << IsAsync))
script->setAsyncKind(AsyncFunction);
+ if (scriptBits & (1 << HasRest))
+ script->setHasRest();
}
JS_STATIC_ASSERT(sizeof(jsbytecode) == 1);
@@ -1689,6 +1694,16 @@ ScriptSource::substringDontDeflate(JSContext* cx, size_t start, size_t stop)
return NewStringCopyNDontDeflate<CanGC>(cx, chars, len);
}
+JSFlatString*
+ScriptSource::functionBodyString(JSContext* cx)
+{
+ MOZ_ASSERT(isFunctionBody());
+
+ size_t start = parameterListEnd_ + (sizeof(FunctionConstructorMedialSigils) - 1);
+ size_t stop = length() - (sizeof(FunctionConstructorFinalBrace) - 1);
+ return substring(cx, start, stop);
+}
+
MOZ_MUST_USE bool
ScriptSource::setSource(ExclusiveContext* cx,
mozilla::UniquePtr<char16_t[], JS::FreePolicy>&& source,
@@ -1740,10 +1755,9 @@ ScriptSource::setCompressedSource(SharedImmutableString&& raw, size_t uncompress
bool
ScriptSource::setSourceCopy(ExclusiveContext* cx, SourceBufferHolder& srcBuf,
- bool argumentsNotIncluded, SourceCompressionTask* task)
+ SourceCompressionTask* task)
{
MOZ_ASSERT(!hasSourceData());
- argumentsNotIncluded_ = argumentsNotIncluded;
auto& cache = cx->zone()->runtimeFromAnyThread()->sharedImmutableStrings();
auto deduped = cache.getOrCreate(srcBuf.get(), srcBuf.length(), [&]() {
@@ -1940,16 +1954,6 @@ ScriptSource::performXDR(XDRState<mode>* xdr)
if (!xdr->codeUint32(&compressedLength))
return false;
- {
- uint8_t argumentsNotIncluded;
- if (mode == XDR_ENCODE)
- argumentsNotIncluded = argumentsNotIncluded_;
- if (!xdr->codeUint8(&argumentsNotIncluded))
- return false;
- if (mode == XDR_DECODE)
- argumentsNotIncluded_ = argumentsNotIncluded;
- }
-
size_t byteLen = compressedLength ? compressedLength : (len * sizeof(char16_t));
if (mode == XDR_DECODE) {
uint8_t* p = xdr->cx()->template pod_malloc<uint8_t>(Max<size_t>(byteLen, 1));
@@ -2074,7 +2078,8 @@ FormatIntroducedFilename(ExclusiveContext* cx, const char* filename, unsigned li
}
bool
-ScriptSource::initFromOptions(ExclusiveContext* cx, const ReadOnlyCompileOptions& options)
+ScriptSource::initFromOptions(ExclusiveContext* cx, const ReadOnlyCompileOptions& options,
+ Maybe<uint32_t> parameterListEnd)
{
MOZ_ASSERT(!filename_);
MOZ_ASSERT(!introducerFilename_);
@@ -2083,6 +2088,7 @@ ScriptSource::initFromOptions(ExclusiveContext* cx, const ReadOnlyCompileOptions
introductionType_ = options.introductionType;
setIntroductionOffset(options.introductionOffset);
+ parameterListEnd_ = parameterListEnd.isSome() ? parameterListEnd.value() : 0;
if (options.hasIntroductionInfo) {
MOZ_ASSERT(options.introductionType != nullptr);
@@ -2636,6 +2642,8 @@ JSScript::initFromFunctionBox(ExclusiveContext* cx, HandleScript script,
script->isGeneratorExp_ = funbox->isGenexpLambda;
script->setGeneratorKind(funbox->generatorKind());
script->setAsyncKind(funbox->asyncKind());
+ if (funbox->hasRest())
+ script->setHasRest();
PositionalFormalParameterIter fi(script);
while (fi && !fi.closedOver())
@@ -2796,9 +2804,10 @@ JSScript::assertValidJumpTargets() const
for (; tn < tnlimit; tn++) {
jsbytecode* tryStart = mainEntry + tn->start;
jsbytecode* tryPc = tryStart - 1;
- if (JSOp(*tryPc) != JSOP_TRY)
+ if (tn->kind != JSTRY_CATCH && tn->kind != JSTRY_FINALLY)
continue;
+ MOZ_ASSERT(JSOp(*tryPc) == JSOP_TRY);
jsbytecode* tryTarget = tryStart + tn->length;
MOZ_ASSERT(mainEntry <= tryTarget && tryTarget < end);
MOZ_ASSERT(BytecodeIsJumpTarget(JSOp(*tryTarget)));
@@ -3294,6 +3303,7 @@ js::detail::CopyScript(JSContext* cx, HandleScript src, HandleScript dst,
dst->needsHomeObject_ = src->needsHomeObject();
dst->isDefaultClassConstructor_ = src->isDefaultClassConstructor();
dst->isAsync_ = src->asyncKind() == AsyncFunction;
+ dst->hasRest_ = src->hasRest_;
if (nconsts != 0) {
GCPtrValue* vector = Rebase<GCPtrValue>(dst, src, src->consts()->vector);
@@ -4027,6 +4037,7 @@ LazyScript::Create(ExclusiveContext* cx, HandleFunction fun,
p.shouldDeclareArguments = false;
p.hasThisBinding = false;
p.isAsync = false;
+ p.hasRest = false;
p.numClosedOverBindings = closedOverBindings.length();
p.numInnerFunctions = innerFunctions.length();
p.generatorKindBits = GeneratorKindAsBits(NotGenerator);
@@ -4168,7 +4179,7 @@ JSScript::hasLoops()
bool
JSScript::mayReadFrameArgsDirectly()
{
- return argumentsHasVarBinding() || (function() && function()->hasRest());
+ return argumentsHasVarBinding() || hasRest();
}
static inline void
diff --git a/js/src/jsscript.h b/js/src/jsscript.h
index bc8bda83d..87da79901 100644
--- a/js/src/jsscript.h
+++ b/js/src/jsscript.h
@@ -10,6 +10,7 @@
#define jsscript_h
#include "mozilla/Atomics.h"
+#include "mozilla/Maybe.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/PodOperations.h"
#include "mozilla/Variant.h"
@@ -83,7 +84,9 @@ enum JSTryNoteKind {
JSTRY_FINALLY,
JSTRY_FOR_IN,
JSTRY_FOR_OF,
- JSTRY_LOOP
+ JSTRY_LOOP,
+ JSTRY_FOR_OF_ITERCLOSE,
+ JSTRY_DESTRUCTURING_ITERCLOSE
};
/*
@@ -399,6 +402,11 @@ class ScriptSource
// scripts.
uint32_t introductionOffset_;
+ // If this source is for Function constructor, the position of ")" after
+ // parameter list in the source. This is used to get function body.
+ // 0 for other cases.
+ uint32_t parameterListEnd_;
+
// If this ScriptSource was generated by a code-introduction mechanism such
// as |eval| or |new Function|, the debugger needs access to the "raw"
// filename of the top-level script that contains the eval-ing code. To
@@ -428,7 +436,6 @@ class ScriptSource
// demand. If sourceRetrievable_ and hasSourceData() are false, it is not
// possible to get source at all.
bool sourceRetrievable_:1;
- bool argumentsNotIncluded_:1;
bool hasIntroductionOffset_:1;
const char16_t* chunkChars(JSContext* cx, UncompressedSourceCache::AutoHoldEntry& holder,
@@ -443,10 +450,10 @@ class ScriptSource
sourceMapURL_(nullptr),
mutedErrors_(false),
introductionOffset_(0),
+ parameterListEnd_(0),
introducerFilename_(nullptr),
introductionType_(nullptr),
sourceRetrievable_(false),
- argumentsNotIncluded_(false),
hasIntroductionOffset_(false)
{
}
@@ -461,10 +468,10 @@ class ScriptSource
if (--refs == 0)
js_delete(this);
}
- bool initFromOptions(ExclusiveContext* cx, const ReadOnlyCompileOptions& options);
+ bool initFromOptions(ExclusiveContext* cx, const ReadOnlyCompileOptions& options,
+ mozilla::Maybe<uint32_t> parameterListEnd = mozilla::Nothing());
bool setSourceCopy(ExclusiveContext* cx,
JS::SourceBufferHolder& srcBuf,
- bool argumentsNotIncluded,
SourceCompressionTask* tok);
void setSourceRetrievable() { sourceRetrievable_ = true; }
bool sourceRetrievable() const { return sourceRetrievable_; }
@@ -492,11 +499,6 @@ class ScriptSource
return data.match(LengthMatcher());
}
- bool argumentsNotIncluded() const {
- MOZ_ASSERT(hasSourceData());
- return argumentsNotIncluded_;
- }
-
// Return a string containing the chars starting at |begin| and ending at
// |begin + len|.
const char16_t* chars(JSContext* cx, UncompressedSourceCache::AutoHoldEntry& asp,
@@ -504,6 +506,12 @@ class ScriptSource
JSFlatString* substring(JSContext* cx, size_t start, size_t stop);
JSFlatString* substringDontDeflate(JSContext* cx, size_t start, size_t stop);
+
+ bool isFunctionBody() {
+ return parameterListEnd_ != 0;
+ }
+ JSFlatString* functionBodyString(JSContext* cx);
+
void addSizeOfIncludingThis(mozilla::MallocSizeOf mallocSizeOf,
JS::ScriptSourceInfo* info) const;
@@ -567,6 +575,10 @@ class ScriptSource
introductionOffset_ = offset;
hasIntroductionOffset_ = true;
}
+
+ uint32_t parameterListEnd() const {
+ return parameterListEnd_;
+ }
};
class ScriptSourceHolder
@@ -1002,6 +1014,8 @@ class JSScript : public js::gc::TenuredCell
bool isAsync_:1;
+ bool hasRest_:1;
+
// Add padding so JSScript is gc::Cell aligned. Make padding protected
// instead of private to suppress -Wunused-private-field compiler warnings.
protected:
@@ -1298,6 +1312,13 @@ class JSScript : public js::gc::TenuredCell
isAsync_ = kind == js::AsyncFunction;
}
+ bool hasRest() const {
+ return hasRest_;
+ }
+ void setHasRest() {
+ hasRest_ = true;
+ }
+
void setNeedsHomeObject() {
needsHomeObject_ = true;
}
@@ -1930,6 +1951,7 @@ class LazyScript : public gc::TenuredCell
uint32_t treatAsRunOnce : 1;
uint32_t isDerivedClassConstructor : 1;
uint32_t needsHomeObject : 1;
+ uint32_t hasRest : 1;
};
union {
@@ -2058,6 +2080,13 @@ class LazyScript : public gc::TenuredCell
p_.isAsync = kind == AsyncFunction;
}
+ bool hasRest() const {
+ return p_.hasRest;
+ }
+ void setHasRest() {
+ p_.hasRest = true;
+ }
+
bool strict() const {
return p_.strict;
}
diff --git a/js/src/jsstr.cpp b/js/src/jsstr.cpp
index 32a85dc13..7adeed620 100644
--- a/js/src/jsstr.cpp
+++ b/js/src/jsstr.cpp
@@ -2894,7 +2894,7 @@ static const JSFunctionSpec string_static_methods[] = {
JS_INLINABLE_FN("fromCharCode", js::str_fromCharCode, 1, 0, StringFromCharCode),
JS_INLINABLE_FN("fromCodePoint", js::str_fromCodePoint, 1, 0, StringFromCodePoint),
- JS_SELF_HOSTED_FN("raw", "String_static_raw", 2,JSFUN_HAS_REST),
+ JS_SELF_HOSTED_FN("raw", "String_static_raw", 2,0),
JS_SELF_HOSTED_FN("substring", "String_static_substring", 3,0),
JS_SELF_HOSTED_FN("substr", "String_static_substr", 3,0),
JS_SELF_HOSTED_FN("slice", "String_static_slice", 3,0),
diff --git a/js/src/jsutil.cpp b/js/src/jsutil.cpp
index bb9f33df9..705d21975 100644
--- a/js/src/jsutil.cpp
+++ b/js/src/jsutil.cpp
@@ -39,7 +39,7 @@ mozilla::Atomic<AutoEnterOOMUnsafeRegion*> AutoEnterOOMUnsafeRegion::owner_;
namespace oom {
JS_PUBLIC_DATA(uint32_t) targetThread = 0;
-JS_PUBLIC_DATA(MOZ_THREAD_LOCAL(uint32_t)) threadType;
+MOZ_THREAD_LOCAL(uint32_t) threadType;
JS_PUBLIC_DATA(uint64_t) maxAllocations = UINT64_MAX;
JS_PUBLIC_DATA(uint64_t) counter = 0;
JS_PUBLIC_DATA(bool) failAlways = true;
diff --git a/js/src/make-source-package.sh b/js/src/make-source-package.sh
index f4131b98f..6e44dd977 100755
--- a/js/src/make-source-package.sh
+++ b/js/src/make-source-package.sh
@@ -95,10 +95,6 @@ case $cmd in
# copy build and config directory.
cp -pPR ${TOPSRCDIR}/build ${TOPSRCDIR}/config ${tgtpath}
- # copy cargo config
- ${MKDIR} -p ${tgtpath}/.cargo
- cp -pPR ${TOPSRCDIR}/.cargo/config.in ${tgtpath}/.cargo
-
# generate configure files to avoid build dependency on autoconf-2.13
cp -PR ${TOPSRCDIR}/js/src/configure.in ${tgtpath}/js/src/configure
chmod a+x ${tgtpath}/js/src/configure
diff --git a/js/src/moz.build b/js/src/moz.build
index 1162cb70c..a18170a75 100644
--- a/js/src/moz.build
+++ b/js/src/moz.build
@@ -196,6 +196,7 @@ UNIFIED_SOURCES += [
'gc/Zone.cpp',
'irregexp/NativeRegExpMacroAssembler.cpp',
'irregexp/RegExpAST.cpp',
+ 'irregexp/RegExpCharacters.cpp',
'irregexp/RegExpEngine.cpp',
'irregexp/RegExpInterpreter.cpp',
'irregexp/RegExpMacroAssembler.cpp',
@@ -785,8 +786,10 @@ if CONFIG['JS_HAS_CTYPES']:
DEFINES['FFI_BUILDING'] = True
if CONFIG['GNU_CXX']:
- CXXFLAGS += ['-Wno-shadow', '-Werror=format']
+ # Disable strict-aliasing for GCC, which is enabled by default
+ # starting with version 7.1, see Mozilla bug 1363009.
+ CXXFLAGS += ['-Wno-shadow', '-Werror=format', '-fno-strict-aliasing']
# Suppress warnings in third-party code.
-if CONFIG['CLANG_CXX']:
+if CONFIG['CLANG_CXX'] or CONFIG['GNU_CXX']:
SOURCES['jsdtoa.cpp'].flags += ['-Wno-implicit-fallthrough']
diff --git a/js/src/old-configure.in b/js/src/old-configure.in
index e4589b951..5da81ce3e 100644
--- a/js/src/old-configure.in
+++ b/js/src/old-configure.in
@@ -143,8 +143,7 @@ MOZ_TOOL_VARIABLES
dnl Special win32 checks
dnl ========================================================
-# Target the Windows 8.1 SDK by default
-WINVER=502
+WINVER=601
case "$target" in
*-mingw*)
@@ -722,12 +721,7 @@ case "$target" in
IMPORT_LIB_SUFFIX=lib
MKSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
MKCSHLIB='$(LD) -NOLOGO -DLL -OUT:$@ -PDB:$(LINK_PDBFILE) $(DSO_LDOPTS)'
- dnl Set subsystem version 5 for Windows XP.
- if test "$CPU_ARCH" = "x86"; then
- WIN32_SUBSYSTEM_VERSION=5.01
- else
- WIN32_SUBSYSTEM_VERSION=6.01
- fi
+ WIN32_SUBSYSTEM_VERSION=6.01
WIN32_CONSOLE_EXE_LDFLAGS=-SUBSYSTEM:CONSOLE,$WIN32_SUBSYSTEM_VERSION
WIN32_GUI_EXE_LDFLAGS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
DSO_LDOPTS=-SUBSYSTEM:WINDOWS,$WIN32_SUBSYSTEM_VERSION
diff --git a/js/src/shell/js.cpp b/js/src/shell/js.cpp
index 3f56981cd..cc68c90d5 100644
--- a/js/src/shell/js.cpp
+++ b/js/src/shell/js.cpp
@@ -323,6 +323,7 @@ static bool enableNativeRegExp = false;
static bool enableUnboxedArrays = false;
static bool enableSharedMemory = SHARED_MEMORY_DEFAULT;
static bool enableWasmAlwaysBaseline = false;
+static bool enableArrayProtoValues = true;
static bool printTiming = false;
static const char* jsCacheDir = nullptr;
static const char* jsCacheAsmJSPath = nullptr;
@@ -2585,11 +2586,28 @@ Notes(JSContext* cx, unsigned argc, Value* vp)
return true;
}
-JS_STATIC_ASSERT(JSTRY_CATCH == 0);
-JS_STATIC_ASSERT(JSTRY_FINALLY == 1);
-JS_STATIC_ASSERT(JSTRY_FOR_IN == 2);
+static const char*
+TryNoteName(JSTryNoteKind kind)
+{
+ switch (kind) {
+ case JSTRY_CATCH:
+ return "catch";
+ case JSTRY_FINALLY:
+ return "finally";
+ case JSTRY_FOR_IN:
+ return "for-in";
+ case JSTRY_FOR_OF:
+ return "for-of";
+ case JSTRY_LOOP:
+ return "loop";
+ case JSTRY_FOR_OF_ITERCLOSE:
+ return "for-of-iterclose";
+ case JSTRY_DESTRUCTURING_ITERCLOSE:
+ return "dstr-iterclose";
+ }
-static const char* const TryNoteNames[] = { "catch", "finally", "for-in", "for-of", "loop" };
+ MOZ_CRASH("Bad JSTryNoteKind");
+}
static MOZ_MUST_USE bool
TryNotes(JSContext* cx, HandleScript script, Sprinter* sp)
@@ -2597,17 +2615,16 @@ TryNotes(JSContext* cx, HandleScript script, Sprinter* sp)
if (!script->hasTrynotes())
return true;
- if (sp->put("\nException table:\nkind stack start end\n") < 0)
+ if (sp->put("\nException table:\nkind stack start end\n") < 0)
return false;
JSTryNote* tn = script->trynotes()->vector;
JSTryNote* tnlimit = tn + script->trynotes()->length;
do {
- MOZ_ASSERT(tn->kind < ArrayLength(TryNoteNames));
- uint8_t startOff = script->pcToOffset(script->main()) + tn->start;
- if (!sp->jsprintf(" %-7s %6u %8u %8u\n",
- TryNoteNames[tn->kind], tn->stackDepth,
- startOff, startOff + tn->length))
+ uint32_t startOff = script->pcToOffset(script->main()) + tn->start;
+ if (!sp->jsprintf(" %-16s %6u %8u %8u\n",
+ TryNoteName(static_cast<JSTryNoteKind>(tn->kind)),
+ tn->stackDepth, startOff, startOff + tn->length))
{
return false;
}
@@ -7248,6 +7265,7 @@ SetContextOptions(JSContext* cx, const OptionParser& op)
enableNativeRegExp = !op.getBoolOption("no-native-regexp");
enableUnboxedArrays = op.getBoolOption("unboxed-arrays");
enableWasmAlwaysBaseline = op.getBoolOption("wasm-always-baseline");
+ enableArrayProtoValues = !op.getBoolOption("no-array-proto-values");
JS::ContextOptionsRef(cx).setBaseline(enableBaseline)
.setIon(enableIon)
@@ -7255,7 +7273,8 @@ SetContextOptions(JSContext* cx, const OptionParser& op)
.setWasm(enableWasm)
.setWasmAlwaysBaseline(enableWasmAlwaysBaseline)
.setNativeRegExp(enableNativeRegExp)
- .setUnboxedArrays(enableUnboxedArrays);
+ .setUnboxedArrays(enableUnboxedArrays)
+ .setArrayProtoValues(enableArrayProtoValues);
if (op.getBoolOption("wasm-check-bce"))
jit::JitOptions.wasmAlwaysCheckBounds = true;
@@ -7526,7 +7545,8 @@ SetWorkerContextOptions(JSContext* cx)
.setWasm(enableWasm)
.setWasmAlwaysBaseline(enableWasmAlwaysBaseline)
.setNativeRegExp(enableNativeRegExp)
- .setUnboxedArrays(enableUnboxedArrays);
+ .setUnboxedArrays(enableUnboxedArrays)
+ .setArrayProtoValues(enableArrayProtoValues);
cx->setOffthreadIonCompilationEnabled(offthreadCompilation);
cx->profilingScripts = enableCodeCoverage || enableDisassemblyDumps;
@@ -7699,6 +7719,7 @@ main(int argc, char** argv, char** envp)
|| !op.addBoolOption('\0', "unboxed-arrays", "Allow creating unboxed arrays")
|| !op.addBoolOption('\0', "wasm-always-baseline", "Enable wasm baseline compiler when possible")
|| !op.addBoolOption('\0', "wasm-check-bce", "Always generate wasm bounds check, even redundant ones.")
+ || !op.addBoolOption('\0', "no-array-proto-values", "Remove Array.prototype.values")
#ifdef ENABLE_SHARED_ARRAY_BUFFER
|| !op.addStringOption('\0', "shared-memory", "on/off",
"SharedArrayBuffer and Atomics "
diff --git a/js/src/tests/Intl/Collator/construct-newtarget.js b/js/src/tests/Intl/Collator/construct-newtarget.js
new file mode 100644
index 000000000..5db1abf37
--- /dev/null
+++ b/js/src/tests/Intl/Collator/construct-newtarget.js
@@ -0,0 +1,81 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+// Test subclassing %Intl.Collator% works correctly.
+class MyCollator extends Intl.Collator {}
+
+var obj = new MyCollator();
+assertEq(obj instanceof MyCollator, true);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), MyCollator.prototype);
+
+obj = Reflect.construct(MyCollator, []);
+assertEq(obj instanceof MyCollator, true);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), MyCollator.prototype);
+
+obj = Reflect.construct(MyCollator, [], MyCollator);
+assertEq(obj instanceof MyCollator, true);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), MyCollator.prototype);
+
+obj = Reflect.construct(MyCollator, [], Intl.Collator);
+assertEq(obj instanceof MyCollator, false);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), Intl.Collator.prototype);
+
+
+// Set a different constructor as NewTarget.
+obj = Reflect.construct(MyCollator, [], Array);
+assertEq(obj instanceof MyCollator, false);
+assertEq(obj instanceof Intl.Collator, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+obj = Reflect.construct(Intl.Collator, [], Array);
+assertEq(obj instanceof Intl.Collator, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+
+// The prototype defaults to %CollatorPrototype% if null.
+function NewTargetNullPrototype() {}
+NewTargetNullPrototype.prototype = null;
+
+obj = Reflect.construct(Intl.Collator, [], NewTargetNullPrototype);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), Intl.Collator.prototype);
+
+obj = Reflect.construct(MyCollator, [], NewTargetNullPrototype);
+assertEq(obj instanceof MyCollator, false);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), Intl.Collator.prototype);
+
+
+// "prototype" property is retrieved exactly once.
+var trapLog = [], getLog = [];
+var ProxiedConstructor = new Proxy(Intl.Collator, new Proxy({
+ get(target, propertyKey, receiver) {
+ getLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}, {
+ get(target, propertyKey, receiver) {
+ trapLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}));
+
+obj = Reflect.construct(Intl.Collator, [], ProxiedConstructor);
+assertEqArray(trapLog, ["get"]);
+assertEqArray(getLog, ["prototype"]);
+assertEq(obj instanceof Intl.Collator, true);
+assertEq(Object.getPrototypeOf(obj), Intl.Collator.prototype);
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/Intl/DateTimeFormat/construct-newtarget.js b/js/src/tests/Intl/DateTimeFormat/construct-newtarget.js
new file mode 100644
index 000000000..bbc08c79a
--- /dev/null
+++ b/js/src/tests/Intl/DateTimeFormat/construct-newtarget.js
@@ -0,0 +1,81 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+// Test subclassing %Intl.DateTimeFormat% works correctly.
+class MyDateTimeFormat extends Intl.DateTimeFormat {}
+
+var obj = new MyDateTimeFormat();
+assertEq(obj instanceof MyDateTimeFormat, true);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
+
+obj = Reflect.construct(MyDateTimeFormat, []);
+assertEq(obj instanceof MyDateTimeFormat, true);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
+
+obj = Reflect.construct(MyDateTimeFormat, [], MyDateTimeFormat);
+assertEq(obj instanceof MyDateTimeFormat, true);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyDateTimeFormat.prototype);
+
+obj = Reflect.construct(MyDateTimeFormat, [], Intl.DateTimeFormat);
+assertEq(obj instanceof MyDateTimeFormat, false);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
+
+
+// Set a different constructor as NewTarget.
+obj = Reflect.construct(MyDateTimeFormat, [], Array);
+assertEq(obj instanceof MyDateTimeFormat, false);
+assertEq(obj instanceof Intl.DateTimeFormat, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+obj = Reflect.construct(Intl.DateTimeFormat, [], Array);
+assertEq(obj instanceof Intl.DateTimeFormat, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+
+// The prototype defaults to %DateTimeFormatPrototype% if null.
+function NewTargetNullPrototype() {}
+NewTargetNullPrototype.prototype = null;
+
+obj = Reflect.construct(Intl.DateTimeFormat, [], NewTargetNullPrototype);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
+
+obj = Reflect.construct(MyDateTimeFormat, [], NewTargetNullPrototype);
+assertEq(obj instanceof MyDateTimeFormat, false);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
+
+
+// "prototype" property is retrieved exactly once.
+var trapLog = [], getLog = [];
+var ProxiedConstructor = new Proxy(Intl.DateTimeFormat, new Proxy({
+ get(target, propertyKey, receiver) {
+ getLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}, {
+ get(target, propertyKey, receiver) {
+ trapLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}));
+
+obj = Reflect.construct(Intl.DateTimeFormat, [], ProxiedConstructor);
+assertEqArray(trapLog, ["get"]);
+assertEqArray(getLog, ["prototype"]);
+assertEq(obj instanceof Intl.DateTimeFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.DateTimeFormat.prototype);
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/Intl/DateTimeFormat/timeZone_backward_links.js b/js/src/tests/Intl/DateTimeFormat/timeZone_backward_links.js
index aeb1fc043..890b1c1d5 100644
--- a/js/src/tests/Intl/DateTimeFormat/timeZone_backward_links.js
+++ b/js/src/tests/Intl/DateTimeFormat/timeZone_backward_links.js
@@ -1,7 +1,7 @@
// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Generated by make_intl_data.py. DO NOT EDIT.
-// tzdata version = 2017c
+// tzdata version = 2018c
const tzMapper = [
x => x,
diff --git a/js/src/tests/Intl/DateTimeFormat/timeZone_backzone.js b/js/src/tests/Intl/DateTimeFormat/timeZone_backzone.js
index b9d957a82..19fd871eb 100644
--- a/js/src/tests/Intl/DateTimeFormat/timeZone_backzone.js
+++ b/js/src/tests/Intl/DateTimeFormat/timeZone_backzone.js
@@ -1,7 +1,7 @@
// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Generated by make_intl_data.py. DO NOT EDIT.
-// tzdata version = 2017c
+// tzdata version = 2018c
const tzMapper = [
x => x,
@@ -47,7 +47,6 @@ const links = {
"Africa/Nouakchott": "Africa/Nouakchott",
"Africa/Ouagadougou": "Africa/Ouagadougou",
"Africa/Porto-Novo": "Africa/Porto-Novo",
- "Africa/Sao_Tome": "Africa/Sao_Tome",
"Africa/Timbuktu": "Africa/Timbuktu",
"America/Anguilla": "America/Anguilla",
"America/Antigua": "America/Antigua",
diff --git a/js/src/tests/Intl/DateTimeFormat/timeZone_backzone_links.js b/js/src/tests/Intl/DateTimeFormat/timeZone_backzone_links.js
index 7a358e997..34425acec 100644
--- a/js/src/tests/Intl/DateTimeFormat/timeZone_backzone_links.js
+++ b/js/src/tests/Intl/DateTimeFormat/timeZone_backzone_links.js
@@ -1,7 +1,7 @@
// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Generated by make_intl_data.py. DO NOT EDIT.
-// tzdata version = 2017c
+// tzdata version = 2018c
const tzMapper = [
x => x,
diff --git a/js/src/tests/Intl/DateTimeFormat/timeZone_notbackward_links.js b/js/src/tests/Intl/DateTimeFormat/timeZone_notbackward_links.js
index 9515cb394..8b2dedec2 100644
--- a/js/src/tests/Intl/DateTimeFormat/timeZone_notbackward_links.js
+++ b/js/src/tests/Intl/DateTimeFormat/timeZone_notbackward_links.js
@@ -1,7 +1,7 @@
// |reftest| skip-if(!this.hasOwnProperty("Intl"))
// Generated by make_intl_data.py. DO NOT EDIT.
-// tzdata version = 2017c
+// tzdata version = 2018c
const tzMapper = [
x => x,
diff --git a/js/src/tests/Intl/NumberFormat/construct-newtarget.js b/js/src/tests/Intl/NumberFormat/construct-newtarget.js
new file mode 100644
index 000000000..0053b2737
--- /dev/null
+++ b/js/src/tests/Intl/NumberFormat/construct-newtarget.js
@@ -0,0 +1,81 @@
+// |reftest| skip-if(!this.hasOwnProperty("Intl"))
+
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+
+// Test subclassing %Intl.NumberFormat% works correctly.
+class MyNumberFormat extends Intl.NumberFormat {}
+
+var obj = new MyNumberFormat();
+assertEq(obj instanceof MyNumberFormat, true);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyNumberFormat.prototype);
+
+obj = Reflect.construct(MyNumberFormat, []);
+assertEq(obj instanceof MyNumberFormat, true);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyNumberFormat.prototype);
+
+obj = Reflect.construct(MyNumberFormat, [], MyNumberFormat);
+assertEq(obj instanceof MyNumberFormat, true);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), MyNumberFormat.prototype);
+
+obj = Reflect.construct(MyNumberFormat, [], Intl.NumberFormat);
+assertEq(obj instanceof MyNumberFormat, false);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.NumberFormat.prototype);
+
+
+// Set a different constructor as NewTarget.
+obj = Reflect.construct(MyNumberFormat, [], Array);
+assertEq(obj instanceof MyNumberFormat, false);
+assertEq(obj instanceof Intl.NumberFormat, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+obj = Reflect.construct(Intl.NumberFormat, [], Array);
+assertEq(obj instanceof Intl.NumberFormat, false);
+assertEq(obj instanceof Array, true);
+assertEq(Object.getPrototypeOf(obj), Array.prototype);
+
+
+// The prototype defaults to %NumberFormatPrototype% if null.
+function NewTargetNullPrototype() {}
+NewTargetNullPrototype.prototype = null;
+
+obj = Reflect.construct(Intl.NumberFormat, [], NewTargetNullPrototype);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.NumberFormat.prototype);
+
+obj = Reflect.construct(MyNumberFormat, [], NewTargetNullPrototype);
+assertEq(obj instanceof MyNumberFormat, false);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.NumberFormat.prototype);
+
+
+// "prototype" property is retrieved exactly once.
+var trapLog = [], getLog = [];
+var ProxiedConstructor = new Proxy(Intl.NumberFormat, new Proxy({
+ get(target, propertyKey, receiver) {
+ getLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}, {
+ get(target, propertyKey, receiver) {
+ trapLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}));
+
+obj = Reflect.construct(Intl.NumberFormat, [], ProxiedConstructor);
+assertEqArray(trapLog, ["get"]);
+assertEqArray(getLog, ["prototype"]);
+assertEq(obj instanceof Intl.NumberFormat, true);
+assertEq(Object.getPrototypeOf(obj), Intl.NumberFormat.prototype);
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_2017/AsyncFunctions/construct-newtarget.js b/js/src/tests/ecma_2017/AsyncFunctions/construct-newtarget.js
new file mode 100644
index 000000000..7d75d0c93
--- /dev/null
+++ b/js/src/tests/ecma_2017/AsyncFunctions/construct-newtarget.js
@@ -0,0 +1,79 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const AsyncFunction = async function(){}.constructor;
+
+
+// Test subclassing %AsyncFunction% works correctly.
+class MyAsync extends AsyncFunction {}
+
+var fn = new MyAsync();
+assertEq(fn instanceof MyAsync, true);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyAsync.prototype);
+
+fn = Reflect.construct(MyAsync, []);
+assertEq(fn instanceof MyAsync, true);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyAsync.prototype);
+
+fn = Reflect.construct(MyAsync, [], MyAsync);
+assertEq(fn instanceof MyAsync, true);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyAsync.prototype);
+
+fn = Reflect.construct(MyAsync, [], AsyncFunction);
+assertEq(fn instanceof MyAsync, false);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), AsyncFunction.prototype);
+
+
+// Set a different constructor as NewTarget.
+fn = Reflect.construct(MyAsync, [], Array);
+assertEq(fn instanceof MyAsync, false);
+assertEq(fn instanceof AsyncFunction, false);
+assertEq(Object.getPrototypeOf(fn), Array.prototype);
+
+fn = Reflect.construct(AsyncFunction, [], Array);
+assertEq(fn instanceof AsyncFunction, false);
+assertEq(Object.getPrototypeOf(fn), Array.prototype);
+
+
+// The prototype defaults to %AsyncFunctionPrototype% if null.
+function NewTargetNullPrototype() {}
+NewTargetNullPrototype.prototype = null;
+
+fn = Reflect.construct(AsyncFunction, [], NewTargetNullPrototype);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), AsyncFunction.prototype);
+
+fn = Reflect.construct(MyAsync, [], NewTargetNullPrototype);
+assertEq(fn instanceof MyAsync, false);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), AsyncFunction.prototype);
+
+
+// "prototype" property is retrieved exactly once.
+var trapLog = [], getLog = [];
+var ProxiedConstructor = new Proxy(AsyncFunction, new Proxy({
+ get(target, propertyKey, receiver) {
+ getLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}, {
+ get(target, propertyKey, receiver) {
+ trapLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}));
+
+fn = Reflect.construct(AsyncFunction, [], ProxiedConstructor);
+assertEqArray(trapLog, ["get"]);
+assertEqArray(getLog, ["prototype"]);
+assertEq(fn instanceof AsyncFunction, true);
+assertEq(Object.getPrototypeOf(fn), AsyncFunction.prototype);
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_2017/AsyncFunctions/subclass.js b/js/src/tests/ecma_2017/AsyncFunctions/subclass.js
new file mode 100644
index 000000000..da20ab19b
--- /dev/null
+++ b/js/src/tests/ecma_2017/AsyncFunctions/subclass.js
@@ -0,0 +1,31 @@
+// |reftest| skip-if(!xulRuntime.shell) -- needs drainJobQueue
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const AsyncFunction = async function(){}.constructor;
+
+class MyAsync extends AsyncFunction {}
+
+// MyGen inherits from %AsyncFunction%.
+assertEq(Object.getPrototypeOf(MyAsync), AsyncFunction);
+
+// MyGen.prototype inherits from %AsyncFunctionPrototype%.
+assertEq(Object.getPrototypeOf(MyAsync.prototype), AsyncFunction.prototype);
+
+var fn = new MyAsync("return await 'ok';");
+
+// fn inherits from MyAsync.prototype.
+assertEq(Object.getPrototypeOf(fn), MyAsync.prototype);
+
+// Ensure the new async function can be executed.
+var promise = fn();
+
+// promise inherits from %Promise.prototype%.
+assertEq(Object.getPrototypeOf(promise), Promise.prototype);
+
+// Computes the expected result.
+assertEventuallyEq(promise, "ok");
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_2017/lastIndex-exec.js b/js/src/tests/ecma_2017/lastIndex-exec.js
new file mode 100644
index 000000000..f42facbe3
--- /dev/null
+++ b/js/src/tests/ecma_2017/lastIndex-exec.js
@@ -0,0 +1,80 @@
+// RegExp.prototype.exec: Test lastIndex changes for ES2017.
+
+// Test various combinations of:
+// - Pattern matches or doesn't match
+// - Global and/or sticky flag is set.
+// - lastIndex exceeds the input string length
+// - lastIndex is +-0
+const testCases = [
+ { regExp: /a/, lastIndex: 0, input: "a", result: 0 },
+ { regExp: /a/g, lastIndex: 0, input: "a", result: 1 },
+ { regExp: /a/y, lastIndex: 0, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: 0, input: "b", result: 0 },
+ { regExp: /a/g, lastIndex: 0, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: 0, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: -0, input: "a", result: -0 },
+ { regExp: /a/g, lastIndex: -0, input: "a", result: 1 },
+ { regExp: /a/y, lastIndex: -0, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: -0, input: "b", result: -0 },
+ { regExp: /a/g, lastIndex: -0, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: -0, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: -1, input: "a", result: -1 },
+ { regExp: /a/g, lastIndex: -1, input: "a", result: 1 },
+ { regExp: /a/y, lastIndex: -1, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: -1, input: "b", result: -1 },
+ { regExp: /a/g, lastIndex: -1, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: -1, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: 100, input: "a", result: 100 },
+ { regExp: /a/g, lastIndex: 100, input: "a", result: 0 },
+ { regExp: /a/y, lastIndex: 100, input: "a", result: 0 },
+];
+
+// Basic test.
+for (let {regExp, lastIndex, input, result} of testCases) {
+ let re = new RegExp(regExp);
+ re.lastIndex = lastIndex;
+ re.exec(input);
+ assertEq(re.lastIndex, result);
+}
+
+// Test when lastIndex is non-writable.
+for (let {regExp, lastIndex, input} of testCases) {
+ let re = new RegExp(regExp);
+ Object.defineProperty(re, "lastIndex", { value: lastIndex, writable: false });
+ if (re.global || re.sticky) {
+ assertThrowsInstanceOf(() => re.exec(input), TypeError);
+ } else {
+ re.exec(input);
+ }
+ assertEq(re.lastIndex, lastIndex);
+}
+
+// Test when lastIndex is changed to non-writable as a side-effect.
+for (let {regExp, lastIndex, input} of testCases) {
+ let re = new RegExp(regExp);
+ let called = false;
+ re.lastIndex = {
+ valueOf() {
+ assertEq(called, false);
+ called = true;
+ Object.defineProperty(re, "lastIndex", { value: 9000, writable: false });
+ return lastIndex;
+ }
+ };
+ if (re.global || re.sticky) {
+ assertThrowsInstanceOf(() => re.exec(input), TypeError);
+ } else {
+ re.exec(input);
+ }
+ assertEq(re.lastIndex, 9000);
+ assertEq(called, true);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_2017/lastIndex-match-or-replace.js b/js/src/tests/ecma_2017/lastIndex-match-or-replace.js
new file mode 100644
index 000000000..b0a8b537c
--- /dev/null
+++ b/js/src/tests/ecma_2017/lastIndex-match-or-replace.js
@@ -0,0 +1,122 @@
+// RegExp.prototype[Symbol.match, Symbol.replace]: Test lastIndex changes for ES2017.
+
+// RegExp-like class to test the RegExp method slow paths.
+class DuckRegExp extends RegExp {
+ constructor(pattern, flags) {
+ return Object.create(DuckRegExp.prototype, {
+ regExp: {
+ value: new RegExp(pattern, flags)
+ },
+ lastIndex: {
+ value: 0, writable: true, enumerable: false, configurable: false
+ }
+ });
+ }
+
+ exec(...args) {
+ this.regExp.lastIndex = this.lastIndex;
+ try {
+ return this.regExp.exec(...args);
+ } finally {
+ if (this.global || this.sticky)
+ this.lastIndex = this.regExp.lastIndex;
+ }
+ }
+
+ get source() { return this.regExp.source; }
+
+ get global() { return this.regExp.global; }
+ get ignoreCase() { return this.regExp.ignoreCase; }
+ get multiline() { return this.regExp.multiline; }
+ get sticky() { return this.regExp.sticky; }
+ get unicode() { return this.regExp.unicode; }
+}
+
+// Test various combinations of:
+// - Pattern matches or doesn't match
+// - Global and/or sticky flag is set.
+// - lastIndex exceeds the input string length
+// - lastIndex is +-0
+const testCases = [
+ { regExp: /a/, lastIndex: 0, input: "a", result: 0 },
+ { regExp: /a/g, lastIndex: 0, input: "a", result: 0 },
+ { regExp: /a/y, lastIndex: 0, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: 0, input: "b", result: 0 },
+ { regExp: /a/g, lastIndex: 0, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: 0, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: -0, input: "a", result: -0 },
+ { regExp: /a/g, lastIndex: -0, input: "a", result: 0 },
+ { regExp: /a/y, lastIndex: -0, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: -0, input: "b", result: -0 },
+ { regExp: /a/g, lastIndex: -0, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: -0, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: -1, input: "a", result: -1 },
+ { regExp: /a/g, lastIndex: -1, input: "a", result: 0 },
+ { regExp: /a/y, lastIndex: -1, input: "a", result: 1 },
+
+ { regExp: /a/, lastIndex: -1, input: "b", result: -1 },
+ { regExp: /a/g, lastIndex: -1, input: "b", result: 0 },
+ { regExp: /a/y, lastIndex: -1, input: "b", result: 0 },
+
+ { regExp: /a/, lastIndex: 100, input: "a", result: 100 },
+ { regExp: /a/g, lastIndex: 100, input: "a", result: 0 },
+ { regExp: /a/y, lastIndex: 100, input: "a", result: 0 },
+];
+
+for (let method of [RegExp.prototype[Symbol.match], RegExp.prototype[Symbol.replace]]) {
+ for (let Constructor of [RegExp, DuckRegExp]) {
+ // Basic test.
+ for (let {regExp, lastIndex, input, result} of testCases) {
+ let re = new Constructor(regExp);
+ re.lastIndex = lastIndex;
+ Reflect.apply(method, re, [input]);
+ assertEq(re.lastIndex, result);
+ }
+
+ // Test when lastIndex is non-writable.
+ for (let {regExp, lastIndex, input} of testCases) {
+ let re = new Constructor(regExp);
+ Object.defineProperty(re, "lastIndex", { value: lastIndex, writable: false });
+ if (re.global || re.sticky) {
+ assertThrowsInstanceOf(() => Reflect.apply(method, re, [input]), TypeError);
+ } else {
+ Reflect.apply(method, re, [input]);
+ }
+ assertEq(re.lastIndex, lastIndex);
+ }
+
+ // Test when lastIndex is changed to non-writable as a side-effect.
+ for (let {regExp, lastIndex, input, result} of testCases) {
+ let re = new Constructor(regExp);
+ let called = false;
+ re.lastIndex = {
+ valueOf() {
+ assertEq(called, false);
+ called = true;
+ Object.defineProperty(re, "lastIndex", { value: 9000, writable: false });
+ return lastIndex;
+ }
+ };
+ if (re.sticky) {
+ assertThrowsInstanceOf(() => Reflect.apply(method, re, [input]), TypeError);
+ assertEq(called, true);
+ assertEq(re.lastIndex, 9000);
+ } else if (re.global) {
+ Reflect.apply(method, re, [input]);
+ assertEq(called, false);
+ assertEq(re.lastIndex, result);
+ } else {
+ Reflect.apply(method, re, [input]);
+ assertEq(called, true);
+ assertEq(re.lastIndex, 9000);
+ }
+ }
+ }
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_2017/lastIndex-search.js b/js/src/tests/ecma_2017/lastIndex-search.js
new file mode 100644
index 000000000..5953b3a88
--- /dev/null
+++ b/js/src/tests/ecma_2017/lastIndex-search.js
@@ -0,0 +1,118 @@
+// RegExp.prototype[Symbol.search]: Test lastIndex changes for ES2017.
+
+// RegExp-like class to test the RegExp method slow paths.
+class DuckRegExp extends RegExp {
+ constructor(pattern, flags) {
+ return Object.create(DuckRegExp.prototype, {
+ regExp: {
+ value: new RegExp(pattern, flags)
+ },
+ lastIndex: {
+ value: 0, writable: true, enumerable: false, configurable: false
+ }
+ });
+ }
+
+ exec(...args) {
+ this.regExp.lastIndex = this.lastIndex;
+ try {
+ return this.regExp.exec(...args);
+ } finally {
+ if (this.global || this.sticky)
+ this.lastIndex = this.regExp.lastIndex;
+ }
+ }
+
+ get source() { return this.regExp.source; }
+
+ get global() { return this.regExp.global; }
+ get ignoreCase() { return this.regExp.ignoreCase; }
+ get multiline() { return this.regExp.multiline; }
+ get sticky() { return this.regExp.sticky; }
+ get unicode() { return this.regExp.unicode; }
+}
+
+// Test various combinations of:
+// - Pattern matches or doesn't match
+// - Global and/or sticky flag is set.
+// - lastIndex exceeds the input string length
+// - lastIndex is +-0
+const testCasesNotPositiveZero = [
+ { regExp: /a/, lastIndex: -1, input: "a" },
+ { regExp: /a/g, lastIndex: -1, input: "a" },
+ { regExp: /a/y, lastIndex: -1, input: "a" },
+
+ { regExp: /a/, lastIndex: 100, input: "a" },
+ { regExp: /a/g, lastIndex: 100, input: "a" },
+ { regExp: /a/y, lastIndex: 100, input: "a" },
+
+ { regExp: /a/, lastIndex: -1, input: "b" },
+ { regExp: /a/g, lastIndex: -1, input: "b" },
+ { regExp: /a/y, lastIndex: -1, input: "b" },
+
+ { regExp: /a/, lastIndex: -0, input: "a" },
+ { regExp: /a/g, lastIndex: -0, input: "a" },
+ { regExp: /a/y, lastIndex: -0, input: "a" },
+
+ { regExp: /a/, lastIndex: -0, input: "b" },
+ { regExp: /a/g, lastIndex: -0, input: "b" },
+ { regExp: /a/y, lastIndex: -0, input: "b" },
+];
+
+const testCasesPositiveZero = [
+ { regExp: /a/, lastIndex: 0, input: "a" },
+ { regExp: /a/g, lastIndex: 0, input: "a" },
+ { regExp: /a/y, lastIndex: 0, input: "a" },
+
+ { regExp: /a/, lastIndex: 0, input: "b" },
+ { regExp: /a/g, lastIndex: 0, input: "b" },
+ { regExp: /a/y, lastIndex: 0, input: "b" },
+];
+
+const testCases = [...testCasesNotPositiveZero, ...testCasesPositiveZero];
+
+for (let Constructor of [RegExp, DuckRegExp]) {
+ // Basic test.
+ for (let {regExp, lastIndex, input} of testCases) {
+ let re = new Constructor(regExp);
+ re.lastIndex = lastIndex;
+ re[Symbol.search](input);
+ assertEq(re.lastIndex, lastIndex);
+ }
+
+ // Test when lastIndex is non-writable and not positive zero.
+ for (let {regExp, lastIndex, input} of testCasesNotPositiveZero) {
+ let re = new Constructor(regExp);
+ Object.defineProperty(re, "lastIndex", { value: lastIndex, writable: false });
+ assertThrowsInstanceOf(() => re[Symbol.search](input), TypeError);
+ assertEq(re.lastIndex, lastIndex);
+ }
+
+ // Test when lastIndex is non-writable and positive zero.
+ for (let {regExp, lastIndex, input} of testCasesPositiveZero) {
+ let re = new Constructor(regExp);
+ Object.defineProperty(re, "lastIndex", { value: lastIndex, writable: false });
+ if (re.global || re.sticky) {
+ assertThrowsInstanceOf(() => re[Symbol.search](input), TypeError);
+ } else {
+ re[Symbol.search](input);
+ }
+ assertEq(re.lastIndex, lastIndex);
+ }
+
+ // Test lastIndex isn't converted to a number.
+ for (let {regExp, lastIndex, input} of testCases) {
+ let re = new RegExp(regExp);
+ let badIndex = {
+ valueOf() {
+ assertEq(false, true);
+ }
+ };
+ re.lastIndex = badIndex;
+ re[Symbol.search](input);
+ assertEq(re.lastIndex, badIndex);
+ }
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_3/String/15.5.4.11.js b/js/src/tests/ecma_3/String/15.5.4.11.js
index 0fd6caaf4..a5515286a 100644
--- a/js/src/tests/ecma_3/String/15.5.4.11.js
+++ b/js/src/tests/ecma_3/String/15.5.4.11.js
@@ -157,7 +157,7 @@ reportCompare(
rex = /y/, rex.lastIndex = 1;
reportCompare(
- "xxx0",
+ "xxx1",
"xxx".replace(rex, "y") + rex.lastIndex,
"Section 25"
);
diff --git a/js/src/tests/ecma_5/Function/arguments-caller-callee.js b/js/src/tests/ecma_5/Function/arguments-caller-callee.js
index 3eda27b49..57efd9eb9 100644
--- a/js/src/tests/ecma_5/Function/arguments-caller-callee.js
+++ b/js/src/tests/ecma_5/Function/arguments-caller-callee.js
@@ -5,7 +5,8 @@
var gTestfile = 'arguments-caller-callee.js';
var BUGNUMBER = 514563;
-var summary = "arguments.caller and arguments.callee are poison pills in ES5";
+var summary = "arguments.caller and arguments.callee are poison pills in ES5, " +
+ "later changed in ES2017 to only poison pill arguments.callee.";
print(BUGNUMBER + ": " + summary);
@@ -31,7 +32,7 @@ function expectTypeError(fun)
}
function bar() { "use strict"; return arguments; }
-expectTypeError(function barCaller() { bar().caller; });
+assertEq(bar().caller, undefined); // No error when accessing arguments.caller in ES2017+
expectTypeError(function barCallee() { bar().callee; });
function baz() { return arguments; }
@@ -41,15 +42,12 @@ assertEq(baz().callee, baz);
// accessor identity
function strictMode() { "use strict"; return arguments; }
-var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode(), "caller").get;
+var canonicalTTE = Object.getOwnPropertyDescriptor(strictMode(), "callee").get;
var args = strictMode();
var argsCaller = Object.getOwnPropertyDescriptor(args, "caller");
-assertEq("get" in argsCaller, true);
-assertEq("set" in argsCaller, true);
-assertEq(argsCaller.get, canonicalTTE);
-assertEq(argsCaller.set, canonicalTTE);
+assertEq(argsCaller, undefined);
var argsCallee = Object.getOwnPropertyDescriptor(args, "callee");
assertEq("get" in argsCallee, true);
diff --git a/js/src/tests/ecma_5/Function/arguments-property-attributes.js b/js/src/tests/ecma_5/Function/arguments-property-attributes.js
index 994b97ca4..f50c1e6da 100644
--- a/js/src/tests/ecma_5/Function/arguments-property-attributes.js
+++ b/js/src/tests/ecma_5/Function/arguments-property-attributes.js
@@ -56,7 +56,7 @@ var sa = strictArgs(0, 1);
var strictArgProps = Object.getOwnPropertyNames(sa).sort();
assertEq(strictArgProps.indexOf("callee") >= 0, true);
-assertEq(strictArgProps.indexOf("caller") >= 0, true);
+assertEq(strictArgProps.indexOf("caller") >= 0, false);
assertEq(strictArgProps.indexOf("0") >= 0, true);
assertEq(strictArgProps.indexOf("1") >= 0, true);
assertEq(strictArgProps.indexOf("length") >= 0, true);
@@ -69,11 +69,7 @@ assertEq(strictCalleeDesc.enumerable, false);
assertEq(strictCalleeDesc.configurable, false);
var strictCallerDesc = Object.getOwnPropertyDescriptor(sa, "caller");
-assertEq(typeof strictCallerDesc.get, "function");
-assertEq(typeof strictCallerDesc.set, "function");
-assertEq(strictCallerDesc.get, strictCallerDesc.set);
-assertEq(strictCallerDesc.enumerable, false);
-assertEq(strictCallerDesc.configurable, false);
+assertEq(strictCallerDesc, undefined);
var strictZeroDesc = Object.getOwnPropertyDescriptor(sa, "0");
assertEq(strictZeroDesc.value, 0);
diff --git a/js/src/tests/ecma_5/RegExp/exec.js b/js/src/tests/ecma_5/RegExp/exec.js
index 411f348d9..4284b6e01 100644
--- a/js/src/tests/ecma_5/RegExp/exec.js
+++ b/js/src/tests/ecma_5/RegExp/exec.js
@@ -165,7 +165,7 @@ r = /abc/;
r.lastIndex = -17;
res = r.exec("cdefg");
assertEq(res, null);
-assertEq(r.lastIndex, 0);
+assertEq(r.lastIndex, -17);
r = /abc/g;
r.lastIndex = -42;
diff --git a/js/src/tests/ecma_5/RegExp/instance-property-storage-introspection.js b/js/src/tests/ecma_5/RegExp/instance-property-storage-introspection.js
index 1f7c7042f..998d25e2c 100644
--- a/js/src/tests/ecma_5/RegExp/instance-property-storage-introspection.js
+++ b/js/src/tests/ecma_5/RegExp/instance-property-storage-introspection.js
@@ -40,9 +40,7 @@ function checkDataProperty(obj, p, expect, msg)
// Check a bunch of "empty" regular expressions first.
-var choices = [{ msg: "RegExp.prototype",
- get: function() { return RegExp.prototype; } },
- { msg: "new RegExp()",
+var choices = [{ msg: "new RegExp()",
get: function() { return new RegExp(); } },
{ msg: "/(?:)/",
get: Function("return /(?:)/;") }];
@@ -55,7 +53,6 @@ function checkRegExp(r, msg, lastIndex)
checkDataProperty(r, "lastIndex", expect, msg);
}
-checkRegExp(RegExp.prototype, "RegExp.prototype", 0);
checkRegExp(new RegExp(), "new RegExp()", 0);
checkRegExp(/(?:)/, "/(?:)/", 0);
checkRegExp(Function("return /(?:)/;")(), 'Function("return /(?:)/;")()', 0);
diff --git a/js/src/tests/ecma_5/extensions/error-tostring-function.js b/js/src/tests/ecma_5/extensions/error-tostring-function.js
index 5e92f1075..86751c39d 100644
--- a/js/src/tests/ecma_5/extensions/error-tostring-function.js
+++ b/js/src/tests/ecma_5/extensions/error-tostring-function.js
@@ -27,7 +27,7 @@ assertEq(ErrorToString(function(){}), "");
var fn1 = function() {};
fn1.message = "ohai";
-assertEq(ErrorToString(fn1), "ohai");
+assertEq(ErrorToString(fn1), "fn1: ohai");
var fn2 = function blerch() {};
fn2.message = "fnord";
@@ -35,7 +35,7 @@ assertEq(ErrorToString(fn2), "blerch: fnord");
var fn3 = function() {};
fn3.message = "";
-assertEq(ErrorToString(fn3), "");
+assertEq(ErrorToString(fn3), "fn3");
/******************************************************************************/
diff --git a/js/src/tests/ecma_6/Array/from-iterator-close.js b/js/src/tests/ecma_6/Array/from-iterator-close.js
new file mode 100644
index 000000000..fa97ea282
--- /dev/null
+++ b/js/src/tests/ecma_6/Array/from-iterator-close.js
@@ -0,0 +1,183 @@
+var BUGNUMBER = 1180306;
+var summary = 'Array.from should close iterator on error';
+
+print(BUGNUMBER + ": " + summary);
+
+function test(ctor, { mapVal=undefined,
+ nextVal=undefined,
+ nextThrowVal=undefined,
+ modifier=undefined,
+ exceptionVal=undefined,
+ exceptionType=undefined,
+ closed=true }) {
+ let iterable = {
+ closed: false,
+ [Symbol.iterator]() {
+ let iterator = {
+ first: true,
+ next() {
+ if (this.first) {
+ this.first = false;
+ if (nextThrowVal)
+ throw nextThrowVal;
+ return nextVal;
+ }
+ return { value: undefined, done: true };
+ },
+ return() {
+ iterable.closed = true;
+ return {};
+ }
+ };
+ if (modifier)
+ modifier(iterator, iterable);
+
+ return iterator;
+ }
+ };
+ if (exceptionVal) {
+ let caught = false;
+ try {
+ ctor.from(iterable, mapVal);
+ } catch (e) {
+ assertEq(e, exceptionVal);
+ caught = true;
+ }
+ assertEq(caught, true);
+ } else if (exceptionType) {
+ assertThrowsInstanceOf(() => ctor.from(iterable, mapVal), exceptionType);
+ } else {
+ ctor.from(iterable, mapVal);
+ }
+ assertEq(iterable.closed, closed);
+}
+
+// == Error cases with close ==
+
+// ES 2017 draft 22.1.2.1 step 5.e.i.1.
+// Cannot test.
+
+// ES 2017 draft 22.1.2.1 step 5.e.vi.2.
+test(Array, {
+ mapVal: () => { throw "map throws"; },
+ nextVal: { value: 1, done: false },
+ exceptionVal: "map throws",
+ closed: true,
+});
+
+// ES 2017 draft 22.1.2.1 step 5.e.ix.
+class MyArray extends Array {
+ constructor() {
+ return new Proxy({}, {
+ defineProperty() {
+ throw "defineProperty throws";
+ }
+ });
+ }
+}
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ exceptionVal: "defineProperty throws",
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 step 3.
+// if GetMethod fails, the thrown value should be used.
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ throw "return getter throws";
+ }
+ });
+ },
+ exceptionVal: "return getter throws",
+ closed: true,
+});
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ return "non object";
+ }
+ });
+ },
+ exceptionType: TypeError,
+ closed: true,
+});
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ // Non callable.
+ return {};
+ }
+ });
+ },
+ exceptionType: TypeError,
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 steps 6.
+// if return method throws, the thrown value should be ignored.
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ throw "return throws";
+ };
+ },
+ exceptionVal: "defineProperty throws",
+ closed: true,
+});
+
+test(MyArray, {
+ nextVal: { value: 1, done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ return "non object";
+ };
+ },
+ exceptionVal: "defineProperty throws",
+ closed: true,
+});
+
+// == Error cases without close ==
+
+// ES 2017 draft 22.1.2.1 step 5.e.iii.
+test(Array, {
+ nextThrowVal: "next throws",
+ exceptionVal: "next throws",
+ closed: false,
+});
+
+test(Array, {
+ nextVal: { value: {}, get done() { throw "done getter throws"; } },
+ exceptionVal: "done getter throws",
+ closed: false,
+});
+
+// ES 2017 draft 22.1.2.1 step 5.e.v.
+test(Array, {
+ nextVal: { get value() { throw "value getter throws"; }, done: false },
+ exceptionVal: "value getter throws",
+ closed: false,
+});
+
+// == Successful cases ==
+
+test(Array, {
+ nextVal: { value: 1, done: false },
+ closed: false,
+});
+
+if (typeof reportCompare === 'function')
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Class/className.js b/js/src/tests/ecma_6/Class/className.js
index a33397a8a..ad3920c15 100644
--- a/js/src/tests/ecma_6/Class/className.js
+++ b/js/src/tests/ecma_6/Class/className.js
@@ -174,27 +174,29 @@ testName(ExtendedExpr3, "base", false, false, false);
// Anonymous class expressions don't get name properties unless specified in a
// static manner.
-let Anon = class {
+// Use property assignment to avoid setting name property.
+let tmp = {};
+let Anon = tmp.value = class {
constructor() {}
};
testName(Anon, "", false, false, false);
-let AnonDefault = class { };
+let AnonDefault = tmp.value = class { };
testName(AnonDefault, "", false, false, false);
-let AnonWithGetter = class {
+let AnonWithGetter = tmp.value = class {
constructor() {}
static get name() { return "base"; }
};
testName(AnonWithGetter, "base", false, true, false);
-let AnonWithSetter = class {
+let AnonWithSetter = tmp.value = class {
constructor() {}
static set name(v) {}
};
testName(AnonWithSetter, undefined, false, false, true);
-let AnonWithGetterSetter = class {
+let AnonWithGetterSetter = tmp.value = class {
constructor() {}
static get name() { return "base"; }
static set name(v) {}
@@ -202,15 +204,15 @@ let AnonWithGetterSetter = class {
testName(AnonWithGetterSetter, "base", false, true, true);
-let ExtendedAnon1 = class extends Anon {
+let ExtendedAnon1 = tmp.value = class extends Anon {
constructor() {}
};
testName(ExtendedAnon1, "", false, false, false);
-let ExtendedAnonDefault = class extends Anon { };
+let ExtendedAnonDefault = tmp.value = class extends Anon { };
testName(ExtendedAnonDefault, "", false, false, false);
-let ExtendedAnon2 = class extends AnonWithGetterSetter {
+let ExtendedAnon2 = tmp.value = class extends AnonWithGetterSetter {
constructor() {}
static get name() { return "extend"; }
};
@@ -218,7 +220,7 @@ testName(ExtendedAnon2, "extend", false, true, false);
delete ExtendedAnon2.name;
testName(ExtendedAnon2, "base", false, false, false);
-let ExtendedAnon3 = class extends AnonWithGetterSetter {
+let ExtendedAnon3 = tmp.value = class extends AnonWithGetterSetter {
constructor() {}
static set name(v) {}
};
diff --git a/js/src/tests/ecma_6/Destructuring/array-default-class.js b/js/src/tests/ecma_6/Destructuring/array-default-class.js
new file mode 100644
index 000000000..5aa9c579b
--- /dev/null
+++ b/js/src/tests/ecma_6/Destructuring/array-default-class.js
@@ -0,0 +1,25 @@
+var BUGNUMBER = 1322314;
+var summary = "Function in computed property in class expression in array destructuring default";
+
+print(BUGNUMBER + ": " + summary);
+
+function* g([
+ a = class E {
+ [ (function() { return "foo"; })() ]() {
+ return 10;
+ }
+ }
+]) {
+ yield a;
+}
+
+let C = [...g([])][0];
+let x = new C();
+assertEq(x.foo(), 10);
+
+C = [...g([undefined])][0];
+x = new C();
+assertEq(x.foo(), 10);
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Destructuring/array-iterator-close.js b/js/src/tests/ecma_6/Destructuring/array-iterator-close.js
new file mode 100644
index 000000000..ed35135db
--- /dev/null
+++ b/js/src/tests/ecma_6/Destructuring/array-iterator-close.js
@@ -0,0 +1,93 @@
+// Tests that IteratorClose is called in array destructuring patterns.
+
+function test() {
+ var returnCalled = 0;
+ var returnCalledExpected = 0;
+ var iterable = {};
+
+ // empty [] calls IteratorClose regardless of "done" on the result.
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ return { done: true };
+ },
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+ var [] = iterable;
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+ var [] = iterable;
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // Non-empty destructuring calls IteratorClose if iterator is not done by
+ // the end of destructuring.
+ var [a,b] = iterable;
+ assertEq(returnCalled, ++returnCalledExpected);
+ var [c,] = iterable;
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in lhs ref calls IteratorClose
+ function throwlhs() {
+ throw "in lhs";
+ }
+ assertThrowsValue(function() {
+ 0, [...{}[throwlhs()]] = iterable;
+ }, "in lhs");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in lhs ref calls IteratorClose with falsy "done".
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ // "done" is undefined.
+ return {};
+ },
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+ assertThrowsValue(function() {
+ 0, [...{}[throwlhs()]] = iterable;
+ }, "in lhs");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in iter.next doesn't call IteratorClose
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ throw "in next";
+ },
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+ assertThrowsValue(function() {
+ var [d] = iterable;
+ }, "in next");
+ assertEq(returnCalled, returnCalledExpected);
+
+ // "return" must return an Object.
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ return 42;
+ }
+ });
+ assertThrowsInstanceOf(function() {
+ var [] = iterable;
+ }, TypeError);
+ assertEq(returnCalled, ++returnCalledExpected);
+}
+
+test();
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Destructuring/order-super.js b/js/src/tests/ecma_6/Destructuring/order-super.js
new file mode 100644
index 000000000..afe11e2d9
--- /dev/null
+++ b/js/src/tests/ecma_6/Destructuring/order-super.js
@@ -0,0 +1,727 @@
+var BUGNUMBER = 1204028;
+var summary = "Destructuring should evaluate lhs reference before rhs in super property";
+
+if (typeof assertEq === "undefined") {
+ assertEq = function(a, b) {
+ if (a !== b)
+ throw new Error(`expected ${b}, got ${a}\n${new Error().stack}`);
+ };
+}
+
+print(BUGNUMBER + ": " + summary);
+
+let logs = [];
+function log(x) {
+ logs.push(x);
+}
+
+let unwrapMap = new Map();
+function unwrap(maybeWrapped) {
+ if (unwrapMap.has(maybeWrapped))
+ return unwrapMap.get(maybeWrapped);
+ return maybeWrapped;
+}
+function ToString(name) {
+ if (name == Symbol.iterator)
+ return "@@iterator";
+ return String(name);
+}
+function logger(obj, prefix=[]) {
+ let wrapped = new Proxy(obj, {
+ get(that, name) {
+ if (name == "return") {
+ // FIXME: Bug 1147371.
+ // We ignore IteratorClose for now.
+ return obj[name];
+ }
+
+ let names = prefix.concat(ToString(name));
+ log("rhs get " + names.join("::"));
+ let v = obj[name];
+ if (typeof v === "object" || typeof v === "function")
+ return logger(v, names);
+ return v;
+ },
+ apply(that, thisArg, args) {
+ let names = prefix.slice();
+ log("rhs call " + names.join("::"));
+ let v = obj.apply(unwrap(thisArg), args);
+ if (typeof v === "object" || typeof v === "function") {
+ names[names.length - 1] += "()";
+ return logger(v, names);
+ }
+ return v;
+ }
+ });
+ unwrapMap.set(wrapped, obj);
+ return wrapped;
+}
+
+class C1 {
+ constructor() {
+ this.clear();
+ }
+ clear() {
+ this.values = {};
+ }
+}
+for (let name of [
+ "a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m",
+ "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z",
+ "0", "1", "length"
+]) {
+ Object.defineProperty(C1.prototype, name, {
+ set: function(value) {
+ log("lhs set " + name);
+ this.values[name] = value;
+ }
+ });
+}
+class C2 extends C1 {
+ constructor() {
+ super();
+
+ let clear = () => {
+ logs = [];
+ this.clear();
+ };
+
+ // Array.
+
+ clear();
+ [
+ super.a
+ ] = logger(["A"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a, "A");
+
+ clear();
+ [
+ super[ (log("lhs before name a"), "a") ]
+ ] = logger(["A"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a, "A");
+
+ // Array rest.
+
+ clear();
+ [
+ ...super.a
+ ] = logger(["A", "B", "C"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a.join(","), "A,B,C");
+
+ clear();
+ [
+ ...super[ (log("lhs before name a"), "a") ]
+ ] = logger(["A", "B", "C"]);;
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a.join(","), "A,B,C");
+
+ // Array combined.
+
+ clear();
+ [
+ super.a,
+ super[ (log("lhs before name b"), "b") ],
+ ...super[ (log("lhs before name c"), "c") ]
+ ] = logger(["A", "B", "C"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+
+ "lhs before name b",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set b",
+
+ "lhs before name c",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set c",
+ ].join(","));
+ assertEq(this.values.a, "A");
+ assertEq(this.values.b, "B");
+ assertEq(this.values.c.join(","), "C");
+
+ // Object.
+
+ clear();
+ ({
+ a: super.a
+ } = logger({a: "A"}));
+ assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a, "A");
+
+ clear();
+ ({
+ a: super[ (log("lhs before name a"), "a") ]
+ } = logger({a: "A"}));
+ assertEq(logs.join(","),
+ [
+ "lhs before name a",
+ "rhs get a",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a, "A");
+
+ // Object combined.
+
+ clear();
+ ({
+ a: super.a,
+ b: super[ (log("lhs before name b"), "b") ]
+ } = logger({a: "A", b: "B"}));
+ assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "lhs set a",
+
+ "lhs before name b",
+ "rhs get b",
+ "lhs set b",
+ ].join(","));
+ assertEq(this.values.a, "A");
+ assertEq(this.values.b, "B");
+
+ // == Nested ==
+
+ // Array -> Array
+
+ clear();
+ [
+ [
+ super[ (log("lhs before name a"), "a") ],
+ ...super[ (log("lhs before name b"), "b") ]
+ ]
+ ] = logger([["A", "B"]]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before name a",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set a",
+
+ "lhs before name b",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "lhs set b",
+ ].join(","));
+ assertEq(this.values.a, "A");
+ assertEq(this.values.b.length, 1);
+ assertEq(this.values.b[0], "B");
+
+ // Array rest -> Array
+
+ clear();
+ [
+ ...[
+ super[ (log("lhs before name a"), "a") ],
+ ...super[ (log("lhs before name b"), "b") ]
+ ]
+ ] = logger(["A", "B"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before name a",
+ "lhs set a",
+
+ "lhs before name b",
+ "lhs set b",
+ ].join(","));
+ assertEq(this.values.a, "A");
+ assertEq(this.values.b.join(","), "B");
+
+ // Array -> Object
+ clear();
+ [
+ {
+ a: super[ (log("lhs before name a"), "a") ]
+ }
+ ] = logger([{a: "A"}]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+
+ "lhs before name a",
+ "rhs get @@iterator()::next()::value::a",
+ "lhs set a",
+ ].join(","));
+ assertEq(this.values.a, "A");
+
+ // Array rest -> Object
+ clear();
+ [
+ ...{
+ 0: super[ (log("lhs before name 0"), "0") ],
+ 1: super[ (log("lhs before name 1"), "1") ],
+ length: super[ (log("lhs before name length"), "length") ],
+ }
+ ] = logger(["A", "B"]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before name 0",
+ "lhs set 0",
+
+ "lhs before name 1",
+ "lhs set 1",
+
+ "lhs before name length",
+ "lhs set length",
+ ].join(","));
+ assertEq(this.values["0"], "A");
+ assertEq(this.values["1"], "B");
+ assertEq(this.values.length, 2);
+
+ // Object -> Array
+ clear();
+ ({
+ a: [
+ super[ (log("lhs before name b"), "b") ]
+ ]
+ } = logger({a: ["B"]}));
+ assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "rhs get a::@@iterator",
+ "rhs call a::@@iterator",
+
+ "lhs before name b",
+ "rhs get a::@@iterator()::next",
+ "rhs call a::@@iterator()::next",
+ "rhs get a::@@iterator()::next()::done",
+ "rhs get a::@@iterator()::next()::value",
+ "lhs set b",
+ ].join(","));
+ assertEq(this.values.b, "B");
+
+ // Object -> Object
+ clear();
+ ({
+ a: {
+ b: super[ (log("lhs before name b"), "b") ]
+ }
+ } = logger({a: {b: "B"}}));
+ assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "lhs before name b",
+ "rhs get a::b",
+ "lhs set b",
+ ].join(","));
+ assertEq(this.values.b, "B");
+
+ // All combined
+
+ clear();
+ [
+ super[ (log("lhs before name a"), "a") ],
+ [
+ super[ (log("lhs before name b"), "b") ],
+ {
+ c: super[ (log("lhs before name c"), "c") ],
+ d: {
+ e: super[ (log("lhs before name e"), "e") ],
+ f: [
+ super[ (log("lhs before name g"), "g") ]
+ ]
+ }
+ }
+ ],
+ {
+ h: super[ (log("lhs before name h"), "h") ],
+ i: [
+ super[ (log("lhs before name j"), "j") ],
+ {
+ k: [
+ super[ (log("lhs before name l"), "l") ]
+ ]
+ }
+ ]
+ },
+ ...[
+ super[ (log("lhs before name m"), "m") ],
+ [
+ super[ (log("lhs before name n"), "n") ],
+ {
+ o: super[ (log("lhs before name o"), "o") ],
+ p: {
+ q: super[ (log("lhs before name q"), "q") ],
+ r: [
+ super[ (log("lhs before name s"), "s") ]
+ ]
+ }
+ }
+ ],
+ ...{
+ 0: super[ (log("lhs before name t"), "t") ],
+ 1: [
+ super[ (log("lhs before name u"), "u") ],
+ {
+ v: super[ (log("lhs before name v"), "v") ],
+ w: {
+ x: super[ (log("lhs before name x"), "x") ],
+ y: [
+ super[ (log("lhs before name z"), "z") ]
+ ]
+ }
+ }
+ ],
+ length: super[ (log("lhs before name length"), "length") ],
+ }
+ ]
+ ] = logger(["A",
+ ["B", {c: "C", d: {e: "E", f: ["G"]}}],
+ {h: "H", i: ["J", {k: ["L"]}]},
+ "M",
+ ["N", {o: "O", p: {q: "Q", r: ["S"]}}],
+ "T", ["U", {v: "V", w: {x: "X", y: ["Z"]}}]]);
+ assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before name b",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set b",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before name c",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::c",
+ "lhs set c",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d",
+
+ "lhs before name e",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::e",
+ "lhs set e",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator",
+
+ "lhs before name g",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next()::value",
+ "lhs set g",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+
+ "lhs before name h",
+ "rhs get @@iterator()::next()::value::h",
+ "lhs set h",
+
+ "rhs get @@iterator()::next()::value::i",
+ "rhs get @@iterator()::next()::value::i::@@iterator",
+ "rhs call @@iterator()::next()::value::i::@@iterator",
+
+ "lhs before name j",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value",
+ "lhs set j",
+
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value",
+
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator",
+
+ "lhs before name l",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next()::value",
+ "lhs set l",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before name m",
+ "lhs set m",
+
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before name n",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set n",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before name o",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::o",
+ "lhs set o",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p",
+
+ "lhs before name q",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::q",
+ "lhs set q",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator",
+
+ "lhs before name s",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next()::value",
+ "lhs set s",
+
+ "lhs before name t",
+ "lhs set t",
+
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before name u",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set u",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before name v",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::v",
+ "lhs set v",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w",
+
+ "lhs before name x",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::x",
+ "lhs set x",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator",
+
+ "lhs before name z",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next()::value",
+ "lhs set z",
+
+ "lhs before name length",
+ "lhs set length",
+ ].join(","));
+ assertEq(this.values.a, "A");
+ assertEq(this.values.b, "B");
+ assertEq(this.values.c, "C");
+ assertEq(this.values.e, "E");
+ assertEq(this.values.g, "G");
+ assertEq(this.values.h, "H");
+ assertEq(this.values.j, "J");
+ assertEq(this.values.l, "L");
+ assertEq(this.values.m, "M");
+ assertEq(this.values.n, "N");
+ assertEq(this.values.o, "O");
+ assertEq(this.values.q, "Q");
+ assertEq(this.values.s, "S");
+ assertEq(this.values.t, "T");
+ assertEq(this.values.u, "U");
+ assertEq(this.values.v, "V");
+ assertEq(this.values.x, "X");
+ assertEq(this.values.z, "Z");
+ assertEq(this.values.length, 2);
+ }
+}
+
+new C2();
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Destructuring/order.js b/js/src/tests/ecma_6/Destructuring/order.js
new file mode 100644
index 000000000..4eb48cd2b
--- /dev/null
+++ b/js/src/tests/ecma_6/Destructuring/order.js
@@ -0,0 +1,745 @@
+var BUGNUMBER = 1204028;
+var summary = "Destructuring should evaluate lhs reference before rhs";
+
+print(BUGNUMBER + ": " + summary);
+
+let storage = {
+ clear() {
+ this.values = {};
+ }
+};
+storage.clear();
+let obj = new Proxy(storage, {
+ set(that, name, value) {
+ log("lhs set " + name);
+ storage.values[name] = value;
+ }
+});
+
+let logs = [];
+function log(x) {
+ logs.push(x);
+}
+
+function clear() {
+ logs = [];
+ storage.clear();
+}
+
+let unwrapMap = new Map();
+function unwrap(maybeWrapped) {
+ if (unwrapMap.has(maybeWrapped))
+ return unwrapMap.get(maybeWrapped);
+ return maybeWrapped;
+}
+function ToString(name) {
+ if (name == Symbol.iterator)
+ return "@@iterator";
+ return String(name);
+}
+function logger(obj, prefix=[]) {
+ let wrapped = new Proxy(obj, {
+ get(that, name) {
+ if (name == "return") {
+ // FIXME: Bug 1147371.
+ // We ignore IteratorClose for now.
+ return obj[name];
+ }
+
+ let names = prefix.concat(ToString(name));
+ log("rhs get " + names.join("::"));
+ let v = obj[name];
+ if (typeof v === "object" || typeof v === "function")
+ return logger(v, names);
+ return v;
+ },
+ apply(that, thisArg, args) {
+ let names = prefix.slice();
+ log("rhs call " + names.join("::"));
+ let v = obj.apply(unwrap(thisArg), args);
+ if (typeof v === "object" || typeof v === "function") {
+ names[names.length - 1] += "()";
+ return logger(v, names);
+ }
+ return v;
+ }
+ });
+ unwrapMap.set(wrapped, obj);
+ return wrapped;
+}
+
+// Array.
+
+clear();
+[
+ ( log("lhs before obj a"), obj ).a
+] = logger(["A"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a, "A");
+
+clear();
+[
+ ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ]
+] = logger(["A"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a, "A");
+
+// Array rest.
+
+clear();
+[
+ ...( log("lhs before obj a"), obj ).a
+] = logger(["A", "B", "C"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a.join(","), "A,B,C");
+
+clear();
+[
+ ...( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ]
+] = logger(["A", "B", "C"]);;
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a.join(","), "A,B,C");
+
+// Array combined.
+
+clear();
+[
+ ( log("lhs before obj a"), obj ).a,
+ ( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ],
+ ...( log("lhs before obj c"), obj )[ (log("lhs before name c"), "c") ]
+] = logger(["A", "B", "C"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set b",
+
+ "lhs before obj c",
+ "lhs before name c",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "lhs set c",
+ ].join(","));
+assertEq(storage.values.a, "A");
+assertEq(storage.values.b, "B");
+assertEq(storage.values.c.join(","), "C");
+
+// Object.
+
+clear();
+({
+ a: ( log("lhs before obj a"), obj ).a
+} = logger({a: "A"}));
+assertEq(logs.join(","),
+ [
+ "lhs before obj a",
+ "rhs get a",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a, "A");
+
+clear();
+({
+ a: ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ]
+} = logger({a: "A"}));
+assertEq(logs.join(","),
+ [
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get a",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a, "A");
+
+// Object combined.
+
+clear();
+({
+ a: ( log("lhs before obj a"), obj ).a,
+ b: ( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ]
+} = logger({a: "A", b: "B"}));
+assertEq(logs.join(","),
+ [
+ "lhs before obj a",
+ "rhs get a",
+ "lhs set a",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get b",
+ "lhs set b",
+ ].join(","));
+assertEq(storage.values.a, "A");
+assertEq(storage.values.b, "B");
+
+// == Nested ==
+
+// Array -> Array
+
+clear();
+[
+ [
+ ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ],
+ ...( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ]
+ ]
+] = logger([["A", "B"]]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set a",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "lhs set b",
+ ].join(","));
+assertEq(storage.values.a, "A");
+assertEq(storage.values.b.length, 1);
+assertEq(storage.values.b[0], "B");
+
+// Array rest -> Array
+
+clear();
+[
+ ...[
+ ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ],
+ ...( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ]
+ ]
+] = logger(["A", "B"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "lhs set a",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "lhs set b",
+ ].join(","));
+assertEq(storage.values.a, "A");
+assertEq(storage.values.b.join(","), "B");
+
+// Array -> Object
+clear();
+[
+ {
+ a: ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ]
+ }
+] = logger([{a: "A"}]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get @@iterator()::next()::value::a",
+ "lhs set a",
+ ].join(","));
+assertEq(storage.values.a, "A");
+
+// Array rest -> Object
+clear();
+[
+ ...{
+ 0: ( log("lhs before obj 0"), obj )[ (log("lhs before name 0"), "0") ],
+ 1: ( log("lhs before obj 1"), obj )[ (log("lhs before name 1"), "1") ],
+ length: ( log("lhs before obj length"), obj )[ (log("lhs before name length"), "length") ],
+ }
+] = logger(["A", "B"]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before obj 0",
+ "lhs before name 0",
+ "lhs set 0",
+
+ "lhs before obj 1",
+ "lhs before name 1",
+ "lhs set 1",
+
+ "lhs before obj length",
+ "lhs before name length",
+ "lhs set length",
+ ].join(","));
+assertEq(storage.values["0"], "A");
+assertEq(storage.values["1"], "B");
+assertEq(storage.values.length, 2);
+
+// Object -> Array
+clear();
+({
+ a: [
+ ( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ]
+ ]
+} = logger({a: ["B"]}));
+assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "rhs get a::@@iterator",
+ "rhs call a::@@iterator",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get a::@@iterator()::next",
+ "rhs call a::@@iterator()::next",
+ "rhs get a::@@iterator()::next()::done",
+ "rhs get a::@@iterator()::next()::value",
+ "lhs set b",
+ ].join(","));
+assertEq(storage.values.b, "B");
+
+// Object -> Object
+clear();
+({
+ a: {
+ b: ( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ]
+ }
+} = logger({a: {b: "B"}}));
+assertEq(logs.join(","),
+ [
+ "rhs get a",
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get a::b",
+ "lhs set b",
+ ].join(","));
+assertEq(storage.values.b, "B");
+
+// All combined
+
+clear();
+[
+ ( log("lhs before obj a"), obj )[ (log("lhs before name a"), "a") ],
+ [
+ ( log("lhs before obj b"), obj )[ (log("lhs before name b"), "b") ],
+ {
+ c: ( log("lhs before obj c"), obj )[ (log("lhs before name c"), "c") ],
+ d: {
+ e: ( log("lhs before obj e"), obj )[ (log("lhs before name e"), "e") ],
+ f: [
+ ( log("lhs before obj g"), obj )[ (log("lhs before name g"), "g") ]
+ ]
+ }
+ }
+ ],
+ {
+ h: ( log("lhs before obj h"), obj )[ (log("lhs before name h"), "h") ],
+ i: [
+ ( log("lhs before obj j"), obj )[ (log("lhs before name j"), "j") ],
+ {
+ k: [
+ ( log("lhs before obj l"), obj )[ (log("lhs before name l"), "l") ]
+ ]
+ }
+ ]
+ },
+ ...[
+ ( log("lhs before obj m"), obj )[ (log("lhs before name m"), "m") ],
+ [
+ ( log("lhs before obj n"), obj )[ (log("lhs before name n"), "n") ],
+ {
+ o: ( log("lhs before obj o"), obj )[ (log("lhs before name o"), "o") ],
+ p: {
+ q: ( log("lhs before obj q"), obj )[ (log("lhs before name q"), "q") ],
+ r: [
+ ( log("lhs before obj s"), obj )[ (log("lhs before name s"), "s") ]
+ ]
+ }
+ }
+ ],
+ ...{
+ 0: ( log("lhs before obj t"), obj )[ (log("lhs before name t"), "t") ],
+ 1: [
+ ( log("lhs before obj u"), obj )[ (log("lhs before name u"), "u") ],
+ {
+ v: ( log("lhs before obj v"), obj )[ (log("lhs before name v"), "v") ],
+ w: {
+ x: ( log("lhs before obj x"), obj )[ (log("lhs before name x"), "x") ],
+ y: [
+ ( log("lhs before obj z"), obj )[ (log("lhs before name z"), "z") ]
+ ]
+ }
+ }
+ ],
+ length: ( log("lhs before obj length"), obj )[ (log("lhs before name length"), "length") ],
+ }
+ ]
+] = logger(["A",
+ ["B", {c: "C", d: {e: "E", f: ["G"]}}],
+ {h: "H", i: ["J", {k: ["L"]}]},
+ "M",
+ ["N", {o: "O", p: {q: "Q", r: ["S"]}}],
+ "T", ["U", {v: "V", w: {x: "X", y: ["Z"]}}]]);
+assertEq(logs.join(","),
+ [
+ "rhs get @@iterator",
+ "rhs call @@iterator",
+
+ "lhs before obj a",
+ "lhs before name a",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "lhs set a",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before obj b",
+ "lhs before name b",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set b",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before obj c",
+ "lhs before name c",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::c",
+ "lhs set c",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d",
+
+ "lhs before obj e",
+ "lhs before name e",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::e",
+ "lhs set e",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator",
+
+ "lhs before obj g",
+ "lhs before name g",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::d::f::@@iterator()::next()::value",
+ "lhs set g",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+
+ "lhs before obj h",
+ "lhs before name h",
+ "rhs get @@iterator()::next()::value::h",
+ "lhs set h",
+
+ "rhs get @@iterator()::next()::value::i",
+ "rhs get @@iterator()::next()::value::i::@@iterator",
+ "rhs call @@iterator()::next()::value::i::@@iterator",
+
+ "lhs before obj j",
+ "lhs before name j",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value",
+ "lhs set j",
+
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value",
+
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator",
+
+ "lhs before obj l",
+ "lhs before name l",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::i::@@iterator()::next()::value::k::@@iterator()::next()::value",
+ "lhs set l",
+
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value",
+ "rhs get @@iterator()::next",
+ "rhs call @@iterator()::next",
+ "rhs get @@iterator()::next()::done",
+
+ "lhs before obj m",
+ "lhs before name m",
+ "lhs set m",
+
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before obj n",
+ "lhs before name n",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set n",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before obj o",
+ "lhs before name o",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::o",
+ "lhs set o",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p",
+
+ "lhs before obj q",
+ "lhs before name q",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::q",
+ "lhs set q",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator",
+
+ "lhs before obj s",
+ "lhs before name s",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::p::r::@@iterator()::next()::value",
+ "lhs set s",
+
+ "lhs before obj t",
+ "lhs before name t",
+ "lhs set t",
+
+ "rhs get @@iterator()::next()::value::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator",
+
+ "lhs before obj u",
+ "lhs before name u",
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+ "lhs set u",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value",
+
+ "lhs before obj v",
+ "lhs before name v",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::v",
+ "lhs set v",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w",
+
+ "lhs before obj x",
+ "lhs before name x",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::x",
+ "lhs set x",
+
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator",
+
+ "lhs before obj z",
+ "lhs before name z",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next",
+ "rhs call @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next()::done",
+ "rhs get @@iterator()::next()::value::@@iterator()::next()::value::w::y::@@iterator()::next()::value",
+ "lhs set z",
+
+ "lhs before obj length",
+ "lhs before name length",
+ "lhs set length",
+ ].join(","));
+assertEq(storage.values.a, "A");
+assertEq(storage.values.b, "B");
+assertEq(storage.values.c, "C");
+assertEq(storage.values.e, "E");
+assertEq(storage.values.g, "G");
+assertEq(storage.values.h, "H");
+assertEq(storage.values.j, "J");
+assertEq(storage.values.l, "L");
+assertEq(storage.values.m, "M");
+assertEq(storage.values.n, "N");
+assertEq(storage.values.o, "O");
+assertEq(storage.values.q, "Q");
+assertEq(storage.values.s, "S");
+assertEq(storage.values.t, "T");
+assertEq(storage.values.u, "U");
+assertEq(storage.values.v, "V");
+assertEq(storage.values.x, "X");
+assertEq(storage.values.z, "Z");
+assertEq(storage.values.length, 2);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Error/constructor-proto.js b/js/src/tests/ecma_6/Error/constructor-proto.js
new file mode 100644
index 000000000..4ddc6025e
--- /dev/null
+++ b/js/src/tests/ecma_6/Error/constructor-proto.js
@@ -0,0 +1,17 @@
+const nativeErrors = [
+ InternalError,
+ EvalError,
+ RangeError,
+ ReferenceError,
+ SyntaxError,
+ TypeError,
+ URIError
+];
+
+assertEq(Reflect.getPrototypeOf(Error), Function.prototype)
+
+for (const error of nativeErrors)
+ assertEq(Reflect.getPrototypeOf(error), Error);
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Error/prototype-properties.js b/js/src/tests/ecma_6/Error/prototype-properties.js
new file mode 100644
index 000000000..c66caf2bc
--- /dev/null
+++ b/js/src/tests/ecma_6/Error/prototype-properties.js
@@ -0,0 +1,24 @@
+const nativeErrors = [
+ InternalError,
+ EvalError,
+ RangeError,
+ ReferenceError,
+ SyntaxError,
+ TypeError,
+ URIError
+];
+
+
+assertEq(Reflect.ownKeys(Error.prototype).toString(), "toSource,toString,message,name,stack,constructor");
+assertEq(Error.prototype.name, "Error");
+assertEq(Error.prototype.message, "");
+
+for (const error of nativeErrors) {
+ assertEq(Reflect.ownKeys(error.prototype).toString(), "message,name,constructor");
+ assertEq(error.prototype.name, error.name);
+ assertEq(error.prototype.message, "");
+ assertEq(error.prototype.constructor, error);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Error/prototype.js b/js/src/tests/ecma_6/Error/prototype.js
new file mode 100644
index 000000000..b22a8e084
--- /dev/null
+++ b/js/src/tests/ecma_6/Error/prototype.js
@@ -0,0 +1,18 @@
+const nativeErrors = [
+ InternalError,
+ EvalError,
+ RangeError,
+ ReferenceError,
+ SyntaxError,
+ TypeError,
+ URIError
+];
+
+assertEq(Reflect.getPrototypeOf(Error.prototype), Object.prototype)
+
+for (const error of nativeErrors) {
+ assertEq(Reflect.getPrototypeOf(error.prototype), Error.prototype);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Error/shell.js b/js/src/tests/ecma_6/Error/shell.js
new file mode 100644
index 000000000..e69de29bb
--- /dev/null
+++ b/js/src/tests/ecma_6/Error/shell.js
diff --git a/js/src/tests/ecma_6/Function/function-name-assignment.js b/js/src/tests/ecma_6/Function/function-name-assignment.js
new file mode 100644
index 000000000..5e4d1c004
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-assignment.js
@@ -0,0 +1,139 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous function name should be set based on assignment";
+
+print(BUGNUMBER + ": " + summary);
+
+var fooSymbol = Symbol("foo");
+var emptySymbol = Symbol("");
+var undefSymbol = Symbol();
+var globalVar;
+
+var exprs = [
+ ["function() {}", false],
+ ["function named() {}", true],
+ ["function*() {}", false],
+ ["function* named() {}", true],
+ ["async function() {}", false],
+ ["async function named() {}", true],
+ ["() => {}", false],
+ ["async () => {}", false],
+ ["class {}", false],
+ ["class named {}", true],
+];
+
+function testAssignmentExpression(expr, named) {
+ eval(`
+ var assignment;
+ assignment = ${expr};
+ assertEq(assignment.name, named ? "named" : "assignment");
+
+ globalVar = ${expr};
+ assertEq(globalVar.name, named ? "named" : "globalVar");
+
+ var obj = { dynamic: null };
+ with (obj) {
+ dynamic = ${expr};
+ }
+ assertEq(obj.dynamic.name, named ? "named" : "dynamic");
+
+ (function namedLambda(param1, param2) {
+ var assignedToNamedLambda;
+ assignedToNamedLambda = namedLambda = ${expr};
+ assertEq(namedLambda.name, "namedLambda");
+ assertEq(assignedToNamedLambda.name, named ? "named" : "namedLambda");
+
+ param1 = ${expr};
+ assertEq(param1.name, named ? "named" : "param1");
+
+ {
+ let param1 = ${expr};
+ assertEq(param1.name, named ? "named" : "param1");
+
+ param2 = ${expr};
+ assertEq(param2.name, named ? "named" : "param2");
+ }
+ })();
+
+ {
+ let nextedLexical1, nextedLexical2;
+ {
+ let nextedLexical1 = ${expr};
+ assertEq(nextedLexical1.name, named ? "named" : "nextedLexical1");
+
+ nextedLexical2 = ${expr};
+ assertEq(nextedLexical2.name, named ? "named" : "nextedLexical2");
+ }
+ }
+ `);
+
+ // Not applicable cases: not IsIdentifierRef.
+ eval(`
+ var inParen;
+ (inParen) = ${expr};
+ assertEq(inParen.name, named ? "named" : "");
+ `);
+
+ // Not applicable cases: not direct RHS.
+ if (!expr.includes("=>")) {
+ eval(`
+ var a = true && ${expr};
+ assertEq(a.name, named ? "named" : "");
+ `);
+ } else {
+ // Arrow function cannot be RHS of &&.
+ eval(`
+ var a = true && (${expr});
+ assertEq(a.name, named ? "named" : "");
+ `);
+ }
+
+ // Not applicable cases: property.
+ eval(`
+ var obj = {};
+
+ obj.prop = ${expr};
+ assertEq(obj.prop.name, named ? "named" : "");
+
+ obj["literal"] = ${expr};
+ assertEq(obj["literal"].name, named ? "named" : "");
+ `);
+
+ // Not applicable cases: assigned again.
+ eval(`
+ var tmp = [${expr}];
+ assertEq(tmp[0].name, named ? "named" : "");
+
+ var assignment;
+ assignment = tmp[0];
+ assertEq(assignment.name, named ? "named" : "");
+ `);
+}
+for (var [expr, named] of exprs) {
+ testAssignmentExpression(expr, named);
+}
+
+function testVariableDeclaration(expr, named) {
+ eval(`
+ var varDecl = ${expr};
+ assertEq(varDecl.name, named ? "named" : "varDecl");
+ `);
+}
+for (var [expr, named] of exprs) {
+ testVariableDeclaration(expr, named);
+}
+
+function testLexicalBinding(expr, named) {
+ eval(`
+ let lexical = ${expr};
+ assertEq(lexical.name, named ? "named" : "lexical");
+
+ const constLexical = ${expr};
+ assertEq(constLexical.name, named ? "named" : "constLexical");
+ `);
+}
+for (var [expr, named] of exprs) {
+ testLexicalBinding(expr, named);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/function-name-binding.js b/js/src/tests/ecma_6/Function/function-name-binding.js
new file mode 100644
index 000000000..bdd6c131c
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-binding.js
@@ -0,0 +1,54 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous function name should be set based on binding pattern";
+
+print(BUGNUMBER + ": " + summary);
+
+var exprs = [
+ ["function() {}", false],
+ ["function named() {}", true],
+ ["function*() {}", false],
+ ["function* named() {}", true],
+ ["async function() {}", false],
+ ["async function named() {}", true],
+ ["() => {}", false],
+ ["async () => {}", false],
+ ["class {}", false],
+ ["class named {}", true],
+];
+
+function testAssignmentProperty(expr, named) {
+ var f = eval(`(function({ prop1 = ${expr} }) { return prop1; })`);
+ assertEq(f({}).name, named ? "named" : "prop1");
+
+ eval(`
+ var { prop1 = ${expr} } = {};
+ assertEq(prop1.name, named ? "named" : "prop1");
+ `);
+}
+for (var [expr, named] of exprs) {
+ testAssignmentProperty(expr, named);
+}
+
+function testAssignmentElement(expr, named) {
+ var f = eval(`(function([elem1 = ${expr}]) { return elem1; })`);
+ assertEq(f([]).name, named ? "named" : "elem1");
+
+ eval(`
+ var [elem1 = ${expr}] = [];
+ assertEq(elem1.name, named ? "named" : "elem1");
+ `);
+}
+for (var [expr, named] of exprs) {
+ testAssignmentElement(expr, named);
+}
+
+function testSingleNameBinding(expr, named) {
+ var f = eval(`(function(param1 = ${expr}) { return param1; })`);
+ assertEq(f().name, named ? "named" : "param1");
+}
+for (var [expr, named] of exprs) {
+ testSingleNameBinding(expr, named);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/function-name-class.js b/js/src/tests/ecma_6/Function/function-name-class.js
new file mode 100644
index 000000000..edde69055
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-class.js
@@ -0,0 +1,32 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous class with name method shouldn't be affected by assignment";
+
+print(BUGNUMBER + ": " + summary);
+
+var classWithStaticNameMethod = class { static name() {} };
+assertEq(typeof classWithStaticNameMethod.name, "function");
+
+var classWithStaticNameGetter = class { static get name() { return "static name"; } };
+assertEq(typeof Object.getOwnPropertyDescriptor(classWithStaticNameGetter, "name").get, "function");
+assertEq(classWithStaticNameGetter.name, "static name");
+
+var classWithStaticNameSetter = class { static set name(v) {} };
+assertEq(typeof Object.getOwnPropertyDescriptor(classWithStaticNameSetter, "name").set, "function");
+
+var n = "NAME".toLowerCase();
+var classWithStaticNameMethodComputed = class { static [n]() {} };
+assertEq(typeof classWithStaticNameMethodComputed.name, "function");
+
+// It doesn't apply for non-static method.
+
+var classWithNameMethod = class { name() {} };
+assertEq(classWithNameMethod.name, "classWithNameMethod");
+
+var classWithNameGetter = class { get name() { return "name"; } };
+assertEq(classWithNameGetter.name, "classWithNameGetter");
+
+var classWithNameSetter = class { set name(v) {} };
+assertEq(classWithNameSetter.name, "classWithNameSetter");
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/function-name-for.js b/js/src/tests/ecma_6/Function/function-name-for.js
new file mode 100644
index 000000000..2f04a5fa8
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-for.js
@@ -0,0 +1,31 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous function name should be set based on for-in initializer";
+
+print(BUGNUMBER + ": " + summary);
+
+var exprs = [
+ ["function() {}", false],
+ ["function named() {}", true],
+ ["function*() {}", false],
+ ["function* named() {}", true],
+ ["async function() {}", false],
+ ["async function named() {}", true],
+ ["() => {}", false],
+ ["async () => {}", false],
+ ["class {}", false],
+ ["class named {}", true],
+];
+
+function testForInHead(expr, named) {
+ eval(`
+ for (var forInHead = ${expr} in {}) {
+ }
+ `);
+ assertEq(forInHead.name, named ? "named" : "forInHead");
+}
+for (var [expr, named] of exprs) {
+ testForInHead(expr, named);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/function-name-method.js b/js/src/tests/ecma_6/Function/function-name-method.js
new file mode 100644
index 000000000..3b2eeee79
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-method.js
@@ -0,0 +1,70 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous function name should be set based on method definition";
+
+print(BUGNUMBER + ": " + summary);
+
+var fooSymbol = Symbol("foo");
+var emptySymbol = Symbol("");
+var undefSymbol = Symbol();
+
+function testMethod(prefix, classPrefix="", prototype=false) {
+ var param = (prefix == "set" || prefix == "static set") ? "v" : "";
+ var sep = classPrefix ? "" : ",";
+ var objOrClass = eval(`(${classPrefix}{
+ ${prefix} prop(${param}) {} ${sep}
+ ${prefix} "literal"(${param}) {} ${sep}
+ ${prefix} ""(${param}) {} ${sep}
+ ${prefix} 5(${param}) {} ${sep}
+ ${prefix} [Symbol.iterator](${param}) {} ${sep}
+ ${prefix} [fooSymbol](${param}) {} ${sep}
+ ${prefix} [emptySymbol](${param}) {} ${sep}
+ ${prefix} [undefSymbol](${param}) {} ${sep}
+ ${prefix} [/a/](${param}) {} ${sep}
+ })`);
+
+ var target = prototype ? objOrClass.prototype : objOrClass;
+
+ function testOne(methodName, expectedName) {
+ var f;
+ if (prefix == "get" || prefix == "static get") {
+ f = Object.getOwnPropertyDescriptor(target, methodName).get;
+ expectedName = "get " + expectedName;
+ } else if (prefix == "set" || prefix == "static set") {
+ f = Object.getOwnPropertyDescriptor(target, methodName).set;
+ expectedName = "set " + expectedName;
+ } else {
+ f = Object.getOwnPropertyDescriptor(target, methodName).value;
+ }
+
+ assertEq(f.name, expectedName);
+ }
+ testOne("prop", "prop");
+ testOne("literal", "literal");
+ testOne("", "");
+ testOne(5, "5");
+ testOne(Symbol.iterator, "[Symbol.iterator]");
+ testOne(fooSymbol, "[foo]");
+ testOne(emptySymbol, "[]");
+ testOne(undefSymbol, "");
+ testOne(/a/, "/a/");
+}
+testMethod("");
+testMethod("*");
+testMethod("async");
+testMethod("get");
+testMethod("set");
+
+testMethod("", "class", true);
+testMethod("*", "class", true);
+testMethod("async", "class", true);
+testMethod("get", "class", true);
+testMethod("set", "class", true);
+
+testMethod("static", "class");
+testMethod("static *", "class");
+testMethod("static async", "class");
+testMethod("static get", "class");
+testMethod("static set", "class");
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/function-name-property.js b/js/src/tests/ecma_6/Function/function-name-property.js
new file mode 100644
index 000000000..7ad174b10
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/function-name-property.js
@@ -0,0 +1,58 @@
+var BUGNUMBER = 883377;
+var summary = "Anonymous function name should be set based on property name";
+
+print(BUGNUMBER + ": " + summary);
+
+var fooSymbol = Symbol("foo");
+var emptySymbol = Symbol("");
+var undefSymbol = Symbol();
+
+var exprs = [
+ ["function() {}", false],
+ ["function named() {}", true],
+ ["function*() {}", false],
+ ["function* named() {}", true],
+ ["async function() {}", false],
+ ["async function named() {}", true],
+ ["() => {}", false],
+ ["async () => {}", false],
+ ["class {}", false],
+ ["class named {}", true],
+];
+
+function testPropertyDefinition(expr, named) {
+ var obj = eval(`({
+ prop: ${expr},
+ "literal": ${expr},
+ "": ${expr},
+ 5: ${expr},
+ 0.4: ${expr},
+ [Symbol.iterator]: ${expr},
+ [fooSymbol]: ${expr},
+ [emptySymbol]: ${expr},
+ [undefSymbol]: ${expr},
+ [/a/]: ${expr},
+ })`);
+ assertEq(obj.prop.name, named ? "named" : "prop");
+ assertEq(obj["literal"].name, named ? "named" : "literal");
+ assertEq(obj[""].name, named ? "named" : "");
+ assertEq(obj[5].name, named ? "named" : "5");
+ assertEq(obj[0.4].name, named ? "named" : "0.4");
+ assertEq(obj[Symbol.iterator].name, named ? "named" : "[Symbol.iterator]");
+ assertEq(obj[fooSymbol].name, named ? "named" : "[foo]");
+ assertEq(obj[emptySymbol].name, named ? "named" : "[]");
+ assertEq(obj[undefSymbol].name, named ? "named" : "");
+ assertEq(obj[/a/].name, named ? "named" : "/a/");
+
+ // Not applicable cases: __proto__.
+ obj = {
+ __proto__: function() {}
+ };
+ assertEq(obj.__proto__.name, "");
+}
+for (var [expr, named] of exprs) {
+ testPropertyDefinition(expr, named);
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Function/invalid-parameter-list.js b/js/src/tests/ecma_6/Function/invalid-parameter-list.js
new file mode 100644
index 000000000..8aae89ef1
--- /dev/null
+++ b/js/src/tests/ecma_6/Function/invalid-parameter-list.js
@@ -0,0 +1,27 @@
+// This constructor behaves like `Function` without checking
+// if the parameter list end is at the expected position.
+// We use this to make sure that the tests we use are otherwise
+// syntactically correct.
+function DumpFunction(...args) {
+ let code = "function anonymous(";
+ code += args.slice(0, -1).join(", ");
+ code += ") {\n";
+ code += args[args.length -1];
+ code += "\n}";
+ eval(code);
+}
+
+const tests = [
+ ["/*", "*/) {"],
+ ["//", ") {"],
+ ["a = `", "` ) {"],
+ [") { var x = function (", "} "],
+ ["x = function (", "}) {"]
+];
+
+for (const test of tests) {
+ DumpFunction(...test);
+ assertThrowsInstanceOf(() => new Function(...test), SyntaxError);
+}
+
+reportCompare(0, 0, 'ok');
diff --git a/js/src/tests/ecma_6/Generators/construct-newtarget.js b/js/src/tests/ecma_6/Generators/construct-newtarget.js
new file mode 100644
index 000000000..f2087852b
--- /dev/null
+++ b/js/src/tests/ecma_6/Generators/construct-newtarget.js
@@ -0,0 +1,79 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const GeneratorFunction = function*(){}.constructor;
+
+
+// Test subclassing %GeneratorFunction% works correctly.
+class MyGenerator extends GeneratorFunction {}
+
+var fn = new MyGenerator();
+assertEq(fn instanceof MyGenerator, true);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyGenerator.prototype);
+
+fn = Reflect.construct(MyGenerator, []);
+assertEq(fn instanceof MyGenerator, true);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyGenerator.prototype);
+
+fn = Reflect.construct(MyGenerator, [], MyGenerator);
+assertEq(fn instanceof MyGenerator, true);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), MyGenerator.prototype);
+
+fn = Reflect.construct(MyGenerator, [], GeneratorFunction);
+assertEq(fn instanceof MyGenerator, false);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), GeneratorFunction.prototype);
+
+
+// Set a different constructor as NewTarget.
+fn = Reflect.construct(MyGenerator, [], Array);
+assertEq(fn instanceof MyGenerator, false);
+assertEq(fn instanceof GeneratorFunction, false);
+assertEq(Object.getPrototypeOf(fn), Array.prototype);
+
+fn = Reflect.construct(GeneratorFunction, [], Array);
+assertEq(fn instanceof GeneratorFunction, false);
+assertEq(Object.getPrototypeOf(fn), Array.prototype);
+
+
+// The prototype defaults to %GeneratorFunctionPrototype% if null.
+function NewTargetNullPrototype() {}
+NewTargetNullPrototype.prototype = null;
+
+fn = Reflect.construct(GeneratorFunction, [], NewTargetNullPrototype);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), GeneratorFunction.prototype);
+
+fn = Reflect.construct(MyGenerator, [], NewTargetNullPrototype);
+assertEq(fn instanceof MyGenerator, false);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), GeneratorFunction.prototype);
+
+
+// "prototype" property is retrieved exactly once.
+var trapLog = [], getLog = [];
+var ProxiedConstructor = new Proxy(GeneratorFunction, new Proxy({
+ get(target, propertyKey, receiver) {
+ getLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}, {
+ get(target, propertyKey, receiver) {
+ trapLog.push(propertyKey);
+ return Reflect.get(target, propertyKey, receiver);
+ }
+}));
+
+fn = Reflect.construct(GeneratorFunction, [], ProxiedConstructor);
+assertEqArray(trapLog, ["get"]);
+assertEqArray(getLog, ["prototype"]);
+assertEq(fn instanceof GeneratorFunction, true);
+assertEq(Object.getPrototypeOf(fn), GeneratorFunction.prototype);
+
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Generators/delegating-yield-2.js b/js/src/tests/ecma_6/Generators/delegating-yield-2.js
index 918fb33e1..34cb3f4a9 100644
--- a/js/src/tests/ecma_6/Generators/delegating-yield-2.js
+++ b/js/src/tests/ecma_6/Generators/delegating-yield-2.js
@@ -25,8 +25,8 @@ assertThrowsValue(function () { outer.throw(42) }, 42);
inner = g1();
outer = delegate(inner);
assertIteratorNext(outer, 1);
-inner.throw = function(e) { return e*2; };
-assertEq(84, outer.throw(42));
+inner.throw = function(e) { return { value: e*2 }; };
+assertEq(84, outer.throw(42).value);
assertIteratorDone(outer, undefined);
// Monkeypatching inner.next.
@@ -41,7 +41,9 @@ outer = delegate(inner);
assertIteratorNext(outer, 1);
delete GeneratorObjectPrototype.throw;
var outer_throw_42 = GeneratorObjectPrototype_throw.bind(outer, 42);
-assertThrowsValue(outer_throw_42, 42);
+// yield* protocol violation: no 'throw' method
+assertThrowsInstanceOf(outer_throw_42, TypeError);
+// Now done, so just throws.
assertThrowsValue(outer_throw_42, 42);
// Monkeypunch a different throw handler.
@@ -49,11 +51,11 @@ inner = g2();
outer = delegate(inner);
outer_throw_42 = GeneratorObjectPrototype_throw.bind(outer, 42);
assertIteratorNext(outer, 1);
-GeneratorObjectPrototype.throw = function(e) { return e*2; }
-assertEq(84, outer_throw_42());
-assertEq(84, outer_throw_42());
+GeneratorObjectPrototype.throw = function(e) { return { value: e*2 }; }
+assertEq(84, outer_throw_42().value);
+assertEq(84, outer_throw_42().value);
// This continues indefinitely.
-assertEq(84, outer_throw_42());
+assertEq(84, outer_throw_42().value);
assertIteratorDone(outer, undefined);
// The same, but restoring the original pre-monkey throw.
@@ -61,8 +63,8 @@ inner = g2();
outer = delegate(inner);
outer_throw_42 = GeneratorObjectPrototype_throw.bind(outer, 42);
assertIteratorNext(outer, 1);
-assertEq(84, outer_throw_42());
-assertEq(84, outer_throw_42());
+assertEq(84, outer_throw_42().value);
+assertEq(84, outer_throw_42().value);
GeneratorObjectPrototype.throw = GeneratorObjectPrototype_throw;
assertIteratorResult(outer_throw_42(), 42, false);
assertIteratorDone(outer, undefined);
diff --git a/js/src/tests/ecma_6/Generators/subclass.js b/js/src/tests/ecma_6/Generators/subclass.js
new file mode 100644
index 000000000..f93f4df4d
--- /dev/null
+++ b/js/src/tests/ecma_6/Generators/subclass.js
@@ -0,0 +1,33 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+const GeneratorFunction = function*(){}.constructor;
+
+class MyGen extends GeneratorFunction {}
+
+// MyGen inherits from %GeneratorFunction%.
+assertEq(Object.getPrototypeOf(MyGen), GeneratorFunction);
+
+// MyGen.prototype inherits from %Generator%.
+assertEq(Object.getPrototypeOf(MyGen.prototype), GeneratorFunction.prototype);
+
+var fn = new MyGen("yield* [1, 2, 3]");
+
+// fn inherits from MyGen.prototype.
+assertEq(Object.getPrototypeOf(fn), MyGen.prototype);
+
+// fn.prototype inherits from %GeneratorPrototype%.
+assertEq(Object.getPrototypeOf(fn.prototype), GeneratorFunction.prototype.prototype);
+
+// Ensure the new generator function can be executed.
+var it = fn();
+
+// it inherits from fn.prototype.
+assertEq(Object.getPrototypeOf(it), fn.prototype);
+
+// Computes the expected result.
+assertEqArray([...it], [1, 2, 3]);
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Generators/yield-iterator-close.js b/js/src/tests/ecma_6/Generators/yield-iterator-close.js
new file mode 100644
index 000000000..970ad494d
--- /dev/null
+++ b/js/src/tests/ecma_6/Generators/yield-iterator-close.js
@@ -0,0 +1,58 @@
+// Test that IteratorClose is called when a Generator is abruptly completed by
+// Generator.return.
+
+var returnCalled = 0;
+function* wrapNoThrow() {
+ let iter = {
+ [Symbol.iterator]() {
+ return this;
+ },
+ next() {
+ return { value: 10, done: false };
+ },
+ return() {
+ returnCalled++;
+ return {};
+ }
+ };
+ for (const i of iter) {
+ yield i;
+ }
+}
+
+// Breaking calls Generator.return, which causes the yield above to resume with
+// an abrupt completion of kind "return", which then calls
+// iter.return.
+for (const i of wrapNoThrow()) {
+ break;
+}
+assertEq(returnCalled, 1);
+
+function* wrapThrow() {
+ let iter = {
+ [Symbol.iterator]() {
+ return this;
+ },
+ next() {
+ return { value: 10, done: false };
+ },
+ return() {
+ throw 42;
+ }
+ };
+ for (const i of iter) {
+ yield i;
+ }
+}
+
+// Breaking calls Generator.return, which, like above, calls iter.return. If
+// iter.return throws, since the yield is resuming with an abrupt completion of
+// kind "return", the newly thrown value takes precedence over returning.
+assertThrowsValue(() => {
+ for (const i of wrapThrow()) {
+ break;
+ }
+}, 42);
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Generators/yield-star-iterator-close.js b/js/src/tests/ecma_6/Generators/yield-star-iterator-close.js
new file mode 100644
index 000000000..91ad31cb6
--- /dev/null
+++ b/js/src/tests/ecma_6/Generators/yield-star-iterator-close.js
@@ -0,0 +1,153 @@
+// Tests that the "return" method on iterators is called in yield*
+// expressions.
+
+function test() {
+ var returnCalled = 0;
+ var returnCalledExpected = 0;
+ var nextCalled = 0;
+ var nextCalledExpected = 0;
+ var throwCalled = 0;
+ var throwCalledExpected = 0;
+ var iterable = {};
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ nextCalled++;
+ return { done: false };
+ },
+ ret: function() {
+ returnCalled++;
+ return { done: true, value: "iter.return" };
+ }
+ });
+
+ function* y() {
+ yield* iterable;
+ }
+
+ // G.p.throw on an iterator without "throw" calls IteratorClose.
+ var g1 = y();
+ g1.next();
+ assertThrowsInstanceOf(function() {
+ g1.throw("foo");
+ }, TypeError);
+ assertEq(returnCalled, ++returnCalledExpected);
+ assertEq(nextCalled, ++nextCalledExpected);
+ g1.next();
+ assertEq(nextCalled, nextCalledExpected);
+
+ // G.p.return calls "return", and if the result.done is true, return the
+ // result.
+ var g2 = y();
+ g2.next();
+ var v2 = g2.return("test return");
+ assertEq(v2.done, true);
+ assertEq(v2.value, "iter.return");
+ assertEq(returnCalled, ++returnCalledExpected);
+ assertEq(nextCalled, ++nextCalledExpected);
+ g2.next();
+ assertEq(nextCalled, nextCalledExpected);
+
+ // G.p.return calls "return", and if the result.done is false, continue
+ // yielding.
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ nextCalled++;
+ return { done: false };
+ },
+ ret: function() {
+ returnCalled++;
+ return { done: false, value: "iter.return" };
+ }
+ });
+ var g3 = y();
+ g3.next();
+ var v3 = g3.return("test return");
+ assertEq(v3.done, false);
+ assertEq(v3.value, "iter.return");
+ assertEq(returnCalled, ++returnCalledExpected);
+ assertEq(nextCalled, ++nextCalledExpected);
+ g3.next();
+ assertEq(nextCalled, ++nextCalledExpected);
+
+ // G.p.return throwing does not re-call iter.return.
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ throw "in iter.return";
+ }
+ });
+ var g4 = y();
+ g4.next();
+ assertThrowsValue(function() {
+ g4.return("in test");
+ }, "in iter.return");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // G.p.return expects iter.return to return an Object.
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ return 42;
+ }
+ });
+ var g5 = y();
+ g5.next();
+ assertThrowsInstanceOf(function() {
+ g5.return("foo");
+ }, TypeError);
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // IteratorClose expects iter.return to return an Object.
+ var g6 = y();
+ g6.next();
+ var exc;
+ try {
+ g6.throw("foo");
+ } catch (e) {
+ exc = e;
+ } finally {
+ assertEq(exc instanceof TypeError, true);
+ // The message test is here because instanceof TypeError doesn't
+ // distinguish the non-Object return TypeError and the
+ // throw-method-is-not-defined iterator protocol error.
+ assertEq(exc.toString().indexOf("non-object") > 0, true);
+ }
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // G.p.return passes its argument to "return".
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function(x) {
+ assertEq(x, "in test");
+ returnCalled++;
+ return { done: true };
+ }
+ });
+ var g7 = y();
+ g7.next();
+ g7.return("in test");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // If a throw method is present, do not call "return".
+ iterable[Symbol.iterator] = makeIterator({
+ throw: function(e) {
+ throwCalled++;
+ throw e;
+ },
+ ret: function(x) {
+ returnCalled++;
+ return { done: true };
+ }
+ });
+ var g8 = y();
+ g8.next();
+ assertThrowsValue(function() {
+ g8.throw("foo");
+ }, "foo");
+ assertEq(throwCalled, ++throwCalledExpected);
+ assertEq(returnCalled, returnCalledExpected);
+}
+
+test();
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Map/constructor-iterator-close.js b/js/src/tests/ecma_6/Map/constructor-iterator-close.js
new file mode 100644
index 000000000..ba4bee4a7
--- /dev/null
+++ b/js/src/tests/ecma_6/Map/constructor-iterator-close.js
@@ -0,0 +1,253 @@
+var BUGNUMBER = 1180306;
+var summary = 'Map/Set/WeakMap/WeakSet constructor should close iterator on error';
+
+print(BUGNUMBER + ": " + summary);
+
+function test(ctors, { nextVal=undefined,
+ nextThrowVal=undefined,
+ modifier=undefined,
+ exceptionVal=undefined,
+ exceptionType=undefined,
+ closed=true }) {
+ function getIterable() {
+ let iterable = {
+ closed: false,
+ [Symbol.iterator]() {
+ let iterator = {
+ first: true,
+ next() {
+ if (this.first) {
+ this.first = false;
+ if (nextThrowVal)
+ throw nextThrowVal;
+ return nextVal;
+ }
+ return { value: undefined, done: true };
+ },
+ return() {
+ iterable.closed = true;
+ return {};
+ }
+ };
+ if (modifier)
+ modifier(iterator, iterable);
+
+ return iterator;
+ }
+ };
+ return iterable;
+ }
+
+ for (let ctor of ctors) {
+ let iterable = getIterable();
+ if (exceptionVal) {
+ let caught = false;
+ try {
+ new ctor(iterable);
+ } catch (e) {
+ assertEq(e, exceptionVal);
+ caught = true;
+ }
+ assertEq(caught, true);
+ } else if (exceptionType) {
+ assertThrowsInstanceOf(() => new ctor(iterable), exceptionType);
+ } else {
+ new ctor(iterable);
+ }
+ assertEq(iterable.closed, closed);
+ }
+}
+
+// == Error cases with close ==
+
+// ES 2017 draft 23.1.1.1 Map step 8.d.ii.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.d.ii.
+test([Map, WeakMap], {
+ nextVal: { value: "non object", done: false },
+ exceptionType: TypeError,
+ closed: true,
+});
+
+// ES 2017 draft 23.1.1.1 Map step 8.f.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.f.
+test([Map, WeakMap], {
+ nextVal: { value: { get 0() { throw "0 getter throws"; } }, done: false },
+ exceptionVal: "0 getter throws",
+ closed: true,
+});
+
+// ES 2017 draft 23.1.1.1 Map step 8.h.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.h.
+test([Map, WeakMap], {
+ nextVal: { value: { 0: {}, get 1() { throw "1 getter throws"; } }, done: false },
+ exceptionVal: "1 getter throws",
+ closed: true,
+});
+
+// ES 2017 draft 23.1.1.1 Map step 8.j.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.j.
+class MyMap extends Map {
+ set(k, v) {
+ throw "setter throws";
+ }
+}
+class MyWeakMap extends WeakMap {
+ set(k, v) {
+ throw "setter throws";
+ }
+}
+test([MyMap, MyWeakMap], {
+ nextVal: { value: [{}, {}], done: false },
+ exceptionVal: "setter throws",
+ closed: true,
+});
+
+// ES 2017 draft 23.2.1.1 Set step 8.e.
+// ES 2017 draft 23.4.1.1 WeakSet step 8.e.
+class MySet extends Set {
+ add(v) {
+ throw "adder throws";
+ }
+}
+class MyWeakSet extends WeakSet {
+ add(v) {
+ throw "adder throws";
+ }
+}
+test([MySet, MyWeakSet], {
+ nextVal: { value: {}, done: false },
+ exceptionVal: "adder throws",
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 step 3.
+// if GetMethod fails, the thrown value should be used.
+test([MyMap, MySet, MyWeakMap, MyWeakSet], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ throw "return getter throws";
+ }
+ });
+ },
+ exceptionVal: "return getter throws",
+ closed: true,
+});
+test([MyMap, MySet, MyWeakMap, MyWeakSet], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ return "non object";
+ }
+ });
+ },
+ exceptionType: TypeError,
+ closed: true,
+});
+test([MyMap, MySet, MyWeakMap, MyWeakSet], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ // Non callable.
+ return {};
+ }
+ });
+ },
+ exceptionType: TypeError,
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 steps 6.
+// if return method throws, the thrown value should be ignored.
+test([MyMap, MyWeakMap], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ throw "return throws";
+ };
+ },
+ exceptionVal: "setter throws",
+ closed: true,
+});
+test([MySet, MyWeakSet], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ throw "return throws";
+ };
+ },
+ exceptionVal: "adder throws",
+ closed: true,
+});
+
+test([MyMap, MyWeakMap], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ return "non object";
+ };
+ },
+ exceptionVal: "setter throws",
+ closed: true,
+});
+test([MySet, MyWeakSet], {
+ nextVal: { value: [{}, {}], done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ return "non object";
+ };
+ },
+ exceptionVal: "adder throws",
+ closed: true,
+});
+
+// == Error cases without close ==
+
+// ES 2017 draft 23.1.1.1 Map step 8.a.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.a.
+// ES 2017 draft 23.2.1.1 Set step 8.a.
+// ES 2017 draft 23.4.1.1 WeakSet step 8.a.
+test([Map, WeakMap, Set, WeakSet], {
+ nextThrowVal: "next throws",
+ exceptionVal: "next throws",
+ closed: false,
+});
+test([Map, WeakMap, Set, WeakSet], {
+ nextVal: { value: {}, get done() { throw "done getter throws"; } },
+ exceptionVal: "done getter throws",
+ closed: false,
+});
+
+// ES 2017 draft 23.1.1.1 Map step 8.c.
+// ES 2017 draft 23.3.1.1 WeakMap step 8.c.
+// ES 2017 draft 23.2.1.1 Set step 8.c.
+// ES 2017 draft 23.4.1.1 WeakSet step 8.c.
+test([Map, WeakMap, Set, WeakSet], {
+ nextVal: { get value() { throw "value getter throws"; }, done: false },
+ exceptionVal: "value getter throws",
+ closed: false,
+});
+
+// == Successful cases ==
+
+test([Map, WeakMap], {
+ nextVal: { value: [{}, {}], done: false },
+ closed: false,
+});
+test([Set, WeakSet], {
+ nextVal: { value: {}, done: false },
+ closed: false,
+});
+
+if (typeof reportCompare === 'function')
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Object/accessor-name.js b/js/src/tests/ecma_6/Object/accessor-name.js
index 1b5268e07..f238a2aef 100644
--- a/js/src/tests/ecma_6/Object/accessor-name.js
+++ b/js/src/tests/ecma_6/Object/accessor-name.js
@@ -27,10 +27,9 @@ o = {get case() { }, set case(v) {}}
assertEq(name(o, "case", true), "get case");
assertEq(name(o, "case", false), "set case");
-// Congratulations on implementing these!
-assertEq(name({get ["a"]() {}}, "a", true), "");
-assertEq(name({get [123]() {}}, "123", true), "");
-assertEq(name({set ["a"](v) {}}, "a", false), "");
-assertEq(name({set [123](v) {}}, "123", false), "");
+assertEq(name({get ["a"]() {}}, "a", true), "get a");
+assertEq(name({get [123]() {}}, "123", true), "get 123");
+assertEq(name({set ["a"](v) {}}, "a", false), "set a");
+assertEq(name({set [123](v) {}}, "123", false), "set 123");
reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Promise/iterator-close.js b/js/src/tests/ecma_6/Promise/iterator-close.js
new file mode 100644
index 000000000..f17260d05
--- /dev/null
+++ b/js/src/tests/ecma_6/Promise/iterator-close.js
@@ -0,0 +1,234 @@
+// |reftest| skip-if(!xulRuntime.shell) -- needs drainJobQueue
+
+var BUGNUMBER = 1180306;
+var summary = 'Promise.{all,race} should close iterator on error';
+
+print(BUGNUMBER + ": " + summary);
+
+function test(ctor, props, { nextVal=undefined,
+ nextThrowVal=undefined,
+ modifier=undefined,
+ rejectReason=undefined,
+ rejectType=undefined,
+ closed=true }) {
+ function getIterable() {
+ let iterable = {
+ closed: false,
+ [Symbol.iterator]() {
+ let iterator = {
+ first: true,
+ next() {
+ if (this.first) {
+ this.first = false;
+ if (nextThrowVal)
+ throw nextThrowVal;
+ return nextVal;
+ }
+ return { value: undefined, done: true };
+ },
+ return() {
+ iterable.closed = true;
+ return {};
+ }
+ };
+ if (modifier)
+ modifier(iterator, iterable);
+
+ return iterator;
+ }
+ };
+ return iterable;
+ }
+ for (let prop of props) {
+ let iterable = getIterable();
+ let e;
+ ctor[prop](iterable).catch(e_ => { e = e_; });
+ drainJobQueue();
+ if(rejectType)
+ assertEq(e instanceof rejectType, true);
+ else
+ assertEq(e, rejectReason);
+ assertEq(iterable.closed, closed);
+ }
+}
+
+// == Error cases with close ==
+
+// ES 2017 draft 25.4.4.1.1 step 6.i.
+// ES 2017 draft 25.4.4.3.1 step 3.h.
+class MyPromiseStaticResolveGetterThrows extends Promise {
+ static get resolve() {
+ throw "static resolve getter throws";
+ }
+};
+test(MyPromiseStaticResolveGetterThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ rejectReason: "static resolve getter throws",
+ closed: true,
+});
+
+class MyPromiseStaticResolveThrows extends Promise {
+ static resolve() {
+ throw "static resolve throws";
+ }
+};
+test(MyPromiseStaticResolveThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ rejectReason: "static resolve throws",
+ closed: true,
+});
+
+// ES 2017 draft 25.4.4.1.1 step 6.q.
+// ES 2017 draft 25.4.4.3.1 step 3.i.
+class MyPromiseThenGetterThrows extends Promise {
+ static resolve() {
+ return {
+ get then() {
+ throw "then getter throws";
+ }
+ };
+ }
+};
+test(MyPromiseThenGetterThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ rejectReason: "then getter throws",
+ closed: true,
+});
+
+class MyPromiseThenThrows extends Promise {
+ static resolve() {
+ return {
+ then() {
+ throw "then throws";
+ }
+ };
+ }
+};
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ rejectReason: "then throws",
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 step 3.
+// if GetMethod fails, the thrown value should be used.
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ throw "return getter throws";
+ }
+ });
+ },
+ rejectReason: "return getter throws",
+ closed: true,
+});
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ return "non object";
+ }
+ });
+ },
+ rejectType: TypeError,
+ closed: true,
+});
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ modifier: (iterator, iterable) => {
+ Object.defineProperty(iterator, "return", {
+ get: function() {
+ iterable.closed = true;
+ // Non callable.
+ return {};
+ }
+ });
+ },
+ rejectType: TypeError,
+ closed: true,
+});
+
+// ES 2017 draft 7.4.6 steps 6.
+// if return method throws, the thrown value should be ignored.
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ throw "return throws";
+ };
+ },
+ rejectReason: "then throws",
+ closed: true,
+});
+
+test(MyPromiseThenThrows, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ modifier: (iterator, iterable) => {
+ iterator.return = function() {
+ iterable.closed = true;
+ return "non object";
+ };
+ },
+ rejectReason: "then throws",
+ closed: true,
+});
+
+// == Error cases without close ==
+
+// ES 2017 draft 25.4.4.1.1 step 6.a.
+test(Promise, ["all", "race"], {
+ nextThrowVal: "next throws",
+ rejectReason: "next throws",
+ closed: false,
+});
+
+test(Promise, ["all", "race"], {
+ nextVal: { value: {}, get done() { throw "done getter throws"; } },
+ rejectReason: "done getter throws",
+ closed: false,
+});
+
+// ES 2017 draft 25.4.4.1.1 step 6.e.
+test(Promise, ["all", "race"], {
+ nextVal: { get value() { throw "value getter throws"; }, done: false },
+ rejectReason: "value getter throws",
+ closed: false,
+});
+
+// ES 2017 draft 25.4.4.1.1 step 6.d.iii.2.
+let first = true;
+class MyPromiseResolveThrows extends Promise {
+ constructor(executer) {
+ if (first) {
+ first = false;
+ super((resolve, reject) => {
+ executer(() => {
+ throw "resolve throws";
+ }, reject);
+ });
+ return;
+ }
+ super(executer);
+ }
+};
+test(MyPromiseResolveThrows, ["all"], {
+ nextVal: { value: undefined, done: true },
+ rejectReason: "resolve throws",
+ closed: false,
+});
+
+// == Successful cases ==
+
+test(Promise, ["all", "race"], {
+ nextVal: { value: Promise.resolve(1), done: false },
+ closed: false,
+});
+
+if (typeof reportCompare === 'function')
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/RegExp/compile-lastIndex.js b/js/src/tests/ecma_6/RegExp/compile-lastIndex.js
index 80c820f43..5bd7e0b98 100644
--- a/js/src/tests/ecma_6/RegExp/compile-lastIndex.js
+++ b/js/src/tests/ecma_6/RegExp/compile-lastIndex.js
@@ -17,15 +17,12 @@ print(BUGNUMBER + ": " + summary);
var regex = /foo/i;
-// Aside from making .lastIndex non-writable, this has two incidental effects
+// Aside from making .lastIndex non-writable, this has one incidental effect
// ubiquitously tested through the remainder of this test:
//
// * RegExp.prototype.compile will do everything it ordinarily does, BUT it
// will throw a TypeError when attempting to zero .lastIndex immediately
// before succeeding overall.
-// * RegExp.prototype.test for a non-global and non-sticky regular expression,
-// in case of a match, will return true (as normal). BUT if no match is
-// found, it will throw a TypeError when attempting to modify .lastIndex.
//
// Ain't it great?
Object.defineProperty(regex, "lastIndex", { value: 42, writable: false });
@@ -40,8 +37,8 @@ assertEq(regex.lastIndex, 42);
assertEq(regex.test("foo"), true);
assertEq(regex.test("FOO"), true);
-assertThrowsInstanceOf(() => regex.test("bar"), TypeError);
-assertThrowsInstanceOf(() => regex.test("BAR"), TypeError);
+assertEq(regex.test("bar"), false);
+assertEq(regex.test("BAR"), false);
assertThrowsInstanceOf(() => regex.compile("bar"), TypeError);
@@ -52,10 +49,10 @@ assertEq(regex.unicode, false);
assertEq(regex.sticky, false);
assertEq(Object.getOwnPropertyDescriptor(regex, "lastIndex").writable, false);
assertEq(regex.lastIndex, 42);
-assertThrowsInstanceOf(() => regex.test("foo"), TypeError);
-assertThrowsInstanceOf(() => regex.test("FOO"), TypeError);
+assertEq(regex.test("foo"), false);
+assertEq(regex.test("FOO"), false);
assertEq(regex.test("bar"), true);
-assertThrowsInstanceOf(() => regex.test("BAR"), TypeError);
+assertEq(regex.test("BAR"), false);
assertThrowsInstanceOf(() => regex.compile("^baz", "m"), TypeError);
@@ -66,19 +63,16 @@ assertEq(regex.unicode, false);
assertEq(regex.sticky, false);
assertEq(Object.getOwnPropertyDescriptor(regex, "lastIndex").writable, false);
assertEq(regex.lastIndex, 42);
-assertThrowsInstanceOf(() => regex.test("foo"), TypeError);
-assertThrowsInstanceOf(() => regex.test("FOO"), TypeError);
-assertThrowsInstanceOf(() => regex.test("bar"), TypeError);
-assertThrowsInstanceOf(() => regex.test("BAR"), TypeError);
+assertEq(regex.test("foo"), false);
+assertEq(regex.test("FOO"), false);
+assertEq(regex.test("bar"), false);
+assertEq(regex.test("BAR"), false);
assertEq(regex.test("baz"), true);
-assertThrowsInstanceOf(() => regex.test("BAZ"), TypeError);
-assertThrowsInstanceOf(() => regex.test("012345678901234567890123456789012345678901baz"),
- TypeError);
+assertEq(regex.test("BAZ"), false);
+assertEq(regex.test("012345678901234567890123456789012345678901baz"), false);
assertEq(regex.test("012345678901234567890123456789012345678901\nbaz"), true);
-assertThrowsInstanceOf(() => regex.test("012345678901234567890123456789012345678901BAZ"),
- TypeError);
-assertThrowsInstanceOf(() => regex.test("012345678901234567890123456789012345678901\nBAZ"),
- TypeError);
+assertEq(regex.test("012345678901234567890123456789012345678901BAZ"), false);
+assertEq(regex.test("012345678901234567890123456789012345678901\nBAZ"), false);
/******************************************************************************/
diff --git a/js/src/tests/ecma_6/RegExp/compile-symbol.js b/js/src/tests/ecma_6/RegExp/compile-symbol.js
new file mode 100644
index 000000000..9eea1124c
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/compile-symbol.js
@@ -0,0 +1,14 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+for (let sym of [Symbol.iterator, Symbol(), Symbol("description")]) {
+ let re = /a/;
+
+ assertEq(re.source, "a");
+ assertThrowsInstanceOf(() => re.compile(sym), TypeError);
+ assertEq(re.source, "a");
+}
+
+if (typeof reportCompare === 'function')
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/RegExp/constructor-symbol.js b/js/src/tests/ecma_6/RegExp/constructor-symbol.js
new file mode 100644
index 000000000..503d7e5a8
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/constructor-symbol.js
@@ -0,0 +1,14 @@
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+for (let sym of [Symbol.iterator, Symbol(), Symbol("description")]) {
+ assertThrowsInstanceOf(() => RegExp(sym), TypeError);
+ assertThrowsInstanceOf(() => new RegExp(sym), TypeError);
+
+ assertThrowsInstanceOf(() => RegExp(sym, "g"), TypeError);
+ assertThrowsInstanceOf(() => new RegExp(sym, "g"), TypeError);
+}
+
+if (typeof reportCompare === 'function')
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js b/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js
new file mode 100644
index 000000000..9a992f81f
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/match-local-tolength-recompilation.js
@@ -0,0 +1,75 @@
+// Side-effects when calling ToLength(regExp.lastIndex) in
+// RegExp.prototype[@@match] for non-global RegExp can recompile the RegExp.
+
+for (var flag of ["", "y"]) {
+ var regExp = new RegExp("a", flag);
+
+ regExp.lastIndex = {
+ valueOf() {
+ regExp.compile("b");
+ return 0;
+ }
+ };
+
+ var result = regExp[Symbol.match]("b");
+ assertEq(result !== null, true);
+}
+
+// Recompilation modifies flag:
+// Case 1: Adds global flag, validate by checking lastIndex.
+var regExp = new RegExp("a", "");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is now in global mode, RegExpBuiltinExec should update the
+ // lastIndex property to reflect last match.
+ regExp.compile("a", "g");
+ return 0;
+ }
+};
+regExp[Symbol.match]("a");
+assertEq(regExp.lastIndex, 1);
+
+// Case 2: Removes sticky flag with match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("a", "");
+ regExp.lastIndex = 9000;
+ return 0;
+ }
+};
+regExp[Symbol.match]("a");
+assertEq(regExp.lastIndex, 9000);
+
+// Case 3.a: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9001;
+ return 0;
+ }
+};
+regExp[Symbol.match]("a");
+assertEq(regExp.lastIndex, 9001);
+
+// Case 3.b: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9002;
+ return 10000;
+ }
+};
+regExp[Symbol.match]("a");
+assertEq(regExp.lastIndex, 9002);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/RegExp/prototype.js b/js/src/tests/ecma_6/RegExp/prototype.js
new file mode 100644
index 000000000..528142ab0
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/prototype.js
@@ -0,0 +1,31 @@
+const t = RegExp.prototype;
+
+const properties = "toSource,toString,compile,exec,test," +
+ "flags,global,ignoreCase,multiline,source,sticky,unicode," +
+ "constructor," +
+ "Symbol(Symbol.match),Symbol(Symbol.replace),Symbol(Symbol.search),Symbol(Symbol.split)";
+assertEq(Reflect.ownKeys(t).map(String).toString(), properties);
+
+
+// Invoking getters on the prototype should not throw
+function getter(name) {
+ return Object.getOwnPropertyDescriptor(t, name).get.call(t);
+}
+
+assertEq(getter("flags"), "");
+assertEq(getter("global"), undefined);
+assertEq(getter("ignoreCase"), undefined);
+assertEq(getter("multiline"), undefined);
+assertEq(getter("source"), "(?:)");
+assertEq(getter("sticky"), undefined);
+assertEq(getter("unicode"), undefined);
+
+assertEq(t.toString(), "/(?:)/");
+
+// The methods don't work with the prototype
+assertThrowsInstanceOf(() => t.compile("b", "i"), TypeError);
+assertThrowsInstanceOf(() => t.test("x"), TypeError);
+assertThrowsInstanceOf(() => t.exec("x"), TypeError);
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/RegExp/replace-local-tolength-lastindex.js b/js/src/tests/ecma_6/RegExp/replace-local-tolength-lastindex.js
new file mode 100644
index 000000000..7ba840e00
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/replace-local-tolength-lastindex.js
@@ -0,0 +1,22 @@
+// RegExp.prototype[@@replace] always executes ToLength(regExp.lastIndex) for
+// non-global RegExps.
+
+for (var flag of ["", "g", "y", "gy"]) {
+ var regExp = new RegExp("a", flag);
+
+ var called = false;
+ regExp.lastIndex = {
+ valueOf() {
+ assertEq(called, false);
+ called = true;
+ return 0;
+ }
+ };
+
+ assertEq(called, false);
+ regExp[Symbol.replace]("");
+ assertEq(called, !flag.includes("g"));
+}
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js b/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js
new file mode 100644
index 000000000..e03177286
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/replace-local-tolength-recompilation.js
@@ -0,0 +1,75 @@
+// Side-effects when calling ToLength(regExp.lastIndex) in
+// RegExp.prototype[@@replace] for non-global RegExp can recompile the RegExp.
+
+for (var flag of ["", "y"]) {
+ var regExp = new RegExp("a", flag);
+
+ regExp.lastIndex = {
+ valueOf() {
+ regExp.compile("b");
+ return 0;
+ }
+ };
+
+ var result = regExp[Symbol.replace]("b", "pass");
+ assertEq(result, "pass");
+}
+
+// Recompilation modifies flag:
+// Case 1: Adds global flag, validate by checking lastIndex.
+var regExp = new RegExp("a", "");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is now in global mode, RegExpBuiltinExec should update the
+ // lastIndex property to reflect last match.
+ regExp.compile("a", "g");
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 1);
+
+// Case 2: Removes sticky flag with match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("a", "");
+ regExp.lastIndex = 9000;
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9000);
+
+// Case 3.a: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9001;
+ return 0;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9001);
+
+// Case 3.b: Removes sticky flag without match, validate by checking lastIndex.
+var regExp = new RegExp("a", "y");
+regExp.lastIndex = {
+ valueOf() {
+ // |regExp| is no longer sticky, RegExpBuiltinExec shouldn't modify the
+ // lastIndex property.
+ regExp.compile("b", "");
+ regExp.lastIndex = 9002;
+ return 10000;
+ }
+};
+regExp[Symbol.replace]("a", "");
+assertEq(regExp.lastIndex, 9002);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/RegExp/search-trace.js b/js/src/tests/ecma_6/RegExp/search-trace.js
index ef14514c6..fc6bee754 100644
--- a/js/src/tests/ecma_6/RegExp/search-trace.js
+++ b/js/src/tests/ecma_6/RegExp/search-trace.js
@@ -56,6 +56,7 @@ assertEq(log,
"get:lastIndex," +
"set:lastIndex," +
"get:exec,call:exec," +
+ "get:lastIndex," +
"set:lastIndex," +
"get:result[index],");
@@ -70,6 +71,7 @@ assertEq(log,
"get:lastIndex," +
"set:lastIndex," +
"get:exec,call:exec," +
+ "get:lastIndex," +
"set:lastIndex,");
if (typeof reportCompare === "function")
diff --git a/js/src/tests/ecma_6/RegExp/unicode-ignoreCase-word-boundary.js b/js/src/tests/ecma_6/RegExp/unicode-ignoreCase-word-boundary.js
new file mode 100644
index 000000000..c1a04bd3d
--- /dev/null
+++ b/js/src/tests/ecma_6/RegExp/unicode-ignoreCase-word-boundary.js
@@ -0,0 +1,25 @@
+var BUGNUMBER = 1338373;
+var summary = "Word boundary should match U+017F and U+212A in unicode+ignoreCase.";
+
+assertEq(/\b/iu.test('\u017F'), true);
+assertEq(/\b/i.test('\u017F'), false);
+assertEq(/\b/u.test('\u017F'), false);
+assertEq(/\b/.test('\u017F'), false);
+
+assertEq(/\b/iu.test('\u212A'), true);
+assertEq(/\b/i.test('\u212A'), false);
+assertEq(/\b/u.test('\u212A'), false);
+assertEq(/\b/.test('\u212A'), false);
+
+assertEq(/\B/iu.test('\u017F'), false);
+assertEq(/\B/i.test('\u017F'), true);
+assertEq(/\B/u.test('\u017F'), true);
+assertEq(/\B/.test('\u017F'), true);
+
+assertEq(/\B/iu.test('\u212A'), false);
+assertEq(/\B/i.test('\u212A'), true);
+assertEq(/\B/u.test('\u212A'), true);
+assertEq(/\B/.test('\u212A'), true);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Statements/for-inof-finally.js b/js/src/tests/ecma_6/Statements/for-inof-finally.js
new file mode 100644
index 000000000..e1f0c77e1
--- /dev/null
+++ b/js/src/tests/ecma_6/Statements/for-inof-finally.js
@@ -0,0 +1,78 @@
+var BUGNUMBER = 1332881;
+var summary =
+ "Leaving for-in and try should handle stack value in correct order";
+
+print(BUGNUMBER + ": " + summary);
+
+var called = 0;
+function reset() {
+ called = 0;
+}
+var obj = {
+ [Symbol.iterator]() {
+ return {
+ next() {
+ return { value: 10, done: false };
+ },
+ return() {
+ called++;
+ return {};
+ }
+ };
+ }
+};
+
+var a = (function () {
+ for (var x in [0]) {
+ try {} finally {
+ return 11;
+ }
+ }
+})();
+assertEq(a, 11);
+
+reset();
+var b = (function () {
+ for (var x of obj) {
+ try {} finally {
+ return 12;
+ }
+ }
+})();
+assertEq(called, 1);
+assertEq(b, 12);
+
+reset();
+var c = (function () {
+ for (var x in [0]) {
+ for (var y of obj) {
+ try {} finally {
+ return 13;
+ }
+ }
+ }
+})();
+assertEq(called, 1);
+assertEq(c, 13);
+
+reset();
+var d = (function () {
+ for (var x in [0]) {
+ for (var y of obj) {
+ try {} finally {
+ for (var z in [0]) {
+ for (var w of obj) {
+ try {} finally {
+ return 14;
+ }
+ }
+ }
+ }
+ }
+ }
+})();
+assertEq(called, 2);
+assertEq(d, 14);
+
+if (typeof reportCompare === "function")
+ reportCompare(true, true);
diff --git a/js/src/tests/ecma_6/Statements/for-of-iterator-close-throw.js b/js/src/tests/ecma_6/Statements/for-of-iterator-close-throw.js
new file mode 100644
index 000000000..1974e416b
--- /dev/null
+++ b/js/src/tests/ecma_6/Statements/for-of-iterator-close-throw.js
@@ -0,0 +1,35 @@
+function test() {
+ var returnCalled = 0;
+ var returnCalledExpected = 0;
+ var catchEntered = 0;
+ var finallyEntered = 0;
+ var finallyEnteredExpected = 0;
+ var iterable = {};
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ throw 42;
+ }
+ });
+
+ // inner try cannot catch IteratorClose throwing
+ assertThrowsValue(function() {
+ for (var x of iterable) {
+ try {
+ return;
+ } catch (e) {
+ catchEntered++;
+ } finally {
+ finallyEntered++;
+ }
+ }
+ }, 42);
+ assertEq(returnCalled, ++returnCalledExpected);
+ assertEq(catchEntered, 0);
+ assertEq(finallyEntered, ++finallyEnteredExpected);
+}
+
+test();
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Statements/for-of-iterator-close.js b/js/src/tests/ecma_6/Statements/for-of-iterator-close.js
new file mode 100644
index 000000000..b28895d8f
--- /dev/null
+++ b/js/src/tests/ecma_6/Statements/for-of-iterator-close.js
@@ -0,0 +1,102 @@
+// Tests that IteratorReturn is called when a for-of loop has an abrupt
+// completion value during non-iterator code.
+
+function test() {
+ var returnCalled = 0;
+ var returnCalledExpected = 0;
+ var iterable = {};
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+
+ // break calls iter.return
+ for (var x of iterable)
+ break;
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in body calls iter.return
+ assertThrowsValue(function() {
+ for (var x of iterable)
+ throw "in body";
+ }, "in body");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in lhs ref calls iter.return
+ function throwlhs() {
+ throw "in lhs";
+ }
+ assertThrowsValue(function() {
+ for ((throwlhs()) of iterable)
+ continue;
+ }, "in lhs");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in iter.return doesn't re-call iter.return
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ throw "in iter.return";
+ }
+ });
+ assertThrowsValue(function() {
+ for (var x of iterable)
+ break;
+ }, "in iter.return");
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // throw in iter.next doesn't call IteratorClose
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ throw "in next";
+ }
+ });
+ assertThrowsValue(function() {
+ for (var x of iterable)
+ break;
+ }, "in next");
+ assertEq(returnCalled, returnCalledExpected);
+
+ // "return" must return an Object.
+ iterable[Symbol.iterator] = makeIterator({
+ ret: function() {
+ returnCalled++;
+ return 42;
+ }
+ });
+ assertThrowsInstanceOf(function() {
+ for (var x of iterable)
+ break;
+ }, TypeError);
+ assertEq(returnCalled, ++returnCalledExpected);
+
+ // continue doesn't call iter.return for the loop it's continuing
+ var i = 0;
+ iterable[Symbol.iterator] = makeIterator({
+ next: function() {
+ return { done: i++ > 5 };
+ },
+ ret: function() {
+ returnCalled++;
+ return {};
+ }
+ });
+ for (var x of iterable)
+ continue;
+ assertEq(returnCalled, returnCalledExpected);
+
+ // continue does call iter.return for loops it skips
+ i = 0;
+ L: do {
+ for (var x of iterable)
+ continue L;
+ } while (false);
+ assertEq(returnCalled, ++returnCalledExpected);
+}
+
+test();
+
+if (typeof reportCompare === "function")
+ reportCompare(0, 0);
diff --git a/js/src/tests/ecma_6/Syntax/identifiers-with-extended-unicode-escape.js b/js/src/tests/ecma_6/Syntax/identifiers-with-extended-unicode-escape.js
index 8e0a05fb5..e4b5f4602 100644
--- a/js/src/tests/ecma_6/Syntax/identifiers-with-extended-unicode-escape.js
+++ b/js/src/tests/ecma_6/Syntax/identifiers-with-extended-unicode-escape.js
@@ -98,7 +98,7 @@ const otherIdContinue = [
0x19DA, // NEW TAI LUE THAM DIGIT ONE, Gc=No
];
-for (let ident of [...idStart, ...otherIdStart]) {
+for (let ident of [...idStart, ...otherIdStart, ...idStartSupplemental]) {
for (let count of leadingZeros) {
let zeros = "0".repeat(count);
eval(`
@@ -108,20 +108,13 @@ for (let ident of [...idStart, ...otherIdStart]) {
}
}
-// Move this to the loop above when Bug 1197230 is fixed.
-for (let ident of [...idStartSupplemental]) {
- for (let zeros of leadingZeros) {
- assertThrowsInstanceOf(() => eval(`\\u{${zeros}${ident.toString(16)}}`), SyntaxError);
- }
-}
-
for (let ident of [...idContinue, ...idContinueSupplemental, ...otherIdContinue]) {
for (let zeros of leadingZeros) {
assertThrowsInstanceOf(() => eval(`\\u{${zeros}${ident.toString(16)}}`), SyntaxError);
}
}
-for (let ident of [...idStart, ...otherIdStart, ...idContinue, ...otherIdContinue]) {
+for (let ident of [...idStart, ...otherIdStart, ...idContinue, ...otherIdContinue, ...idStartSupplemental, ...idContinueSupplemental]) {
for (let zeros of leadingZeros) {
eval(`
let A\\u{${zeros}${ident.toString(16)}} = 123;
@@ -130,13 +123,6 @@ for (let ident of [...idStart, ...otherIdStart, ...idContinue, ...otherIdContinu
}
}
-// Move this to the loop above when Bug 1197230 is fixed.
-for (let ident of [...idStartSupplemental, ...idContinueSupplemental]) {
- for (let zeros of leadingZeros) {
- assertThrowsInstanceOf(() => eval(`\\u{${zeros}${ident.toString(16)}}`), SyntaxError);
- }
-}
-
const notIdentifiers = [
0x0000, // NULL, Gc=Cc
diff --git a/js/src/tests/ecma_6/shell.js b/js/src/tests/ecma_6/shell.js
index 06be6f2db..756da9f36 100644
--- a/js/src/tests/ecma_6/shell.js
+++ b/js/src/tests/ecma_6/shell.js
@@ -3,21 +3,43 @@
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
(function(global) {
- /** Yield every permutation of the elements in some array. */
- global.Permutations = function* Permutations(items) {
- if (items.length == 0) {
- yield [];
- } else {
- items = items.slice(0);
- for (let i = 0; i < items.length; i++) {
- let swap = items[0];
- items[0] = items[i];
- items[i] = swap;
- for (let e of Permutations(items.slice(1, items.length)))
- yield [items[0]].concat(e);
- }
- }
- };
+ /** Yield every permutation of the elements in some array. */
+ global.Permutations = function* Permutations(items) {
+ if (items.length == 0) {
+ yield [];
+ } else {
+ items = items.slice(0);
+ for (let i = 0; i < items.length; i++) {
+ let swap = items[0];
+ items[0] = items[i];
+ items[i] = swap;
+ for (let e of Permutations(items.slice(1, items.length)))
+ yield [items[0]].concat(e);
+ }
+ }
+ };
+
+ /** Make an iterator with a return method. */
+ global.makeIterator = function makeIterator(overrides) {
+ var throwMethod;
+ if (overrides && overrides.throw)
+ throwMethod = overrides.throw;
+ var iterator = {
+ throw: throwMethod,
+ next: function(x) {
+ if (overrides && overrides.next)
+ return overrides.next(x);
+ return { done: false };
+ },
+ return: function(x) {
+ if (overrides && overrides.ret)
+ return overrides.ret(x);
+ return { done: true };
+ }
+ };
+
+ return function() { return iterator; };
+ };
})(this);
if (typeof assertThrowsInstanceOf === 'undefined') {
diff --git a/js/src/tests/js1_8_5/extensions/clone-regexp.js b/js/src/tests/js1_8_5/extensions/clone-regexp.js
index 97f755785..8541dae98 100644
--- a/js/src/tests/js1_8_5/extensions/clone-regexp.js
+++ b/js/src/tests/js1_8_5/extensions/clone-regexp.js
@@ -22,7 +22,6 @@ function testRegExp(b, c=b) {
testRegExp(RegExp(""));
testRegExp(/(?:)/);
testRegExp(/^(.*)$/gimy);
-testRegExp(RegExp.prototype);
var re = /\bx\b/gi;
re.expando = true;
diff --git a/js/src/tests/jstests.list b/js/src/tests/jstests.list
index a0f2f08bd..1e23a3da3 100644
--- a/js/src/tests/jstests.list
+++ b/js/src/tests/jstests.list
@@ -46,6 +46,16 @@ skip script test262/ch09/9.3/9.3.1/S9.3.1_A2.js
skip script test262/ch09/9.3/9.3.1/S9.3.1_A3_T2.js
skip script test262/ch09/9.3/9.3.1/S9.3.1_A3_T1.js
+# ES2017 removed the strict arguments poison pill for the "caller" property
+# (bug 1324208).
+skip script test262/ch13/13.2/S13.2.3_A1.js
+skip script test262/ch10/10.6/10.6-14-1-s.js
+skip script test262/ch10/10.6/10.6-13-b-3-s.js
+skip script test262/ch10/10.6/10.6-14-b-1-s.js
+skip script test262/ch10/10.6/10.6-14-b-4-s.js
+skip script test262/ch10/10.6/10.6-13-b-1-s.js
+skip script test262/ch10/10.6/10.6-13-b-2-s.js
+
#######################################################################
# Tests disabled due to jstest limitations wrt imported test262 tests #
#######################################################################
diff --git a/js/src/threading/windows/ConditionVariable.cpp b/js/src/threading/windows/ConditionVariable.cpp
index 868c35141..3c75a0f27 100644
--- a/js/src/threading/windows/ConditionVariable.cpp
+++ b/js/src/threading/windows/ConditionVariable.cpp
@@ -28,342 +28,34 @@
_InterlockedIncrement((volatile long*)(addend))
#endif
-// Windows XP and Server 2003 don't support condition variables natively. The
-// NativeImports class is responsible for detecting native support and
-// retrieving the appropriate function pointers. It gets instantiated once,
-// using a static initializer.
-class ConditionVariableNativeImports
-{
-public:
- ConditionVariableNativeImports() {
- HMODULE kernel32_dll = GetModuleHandle("kernel32.dll");
- MOZ_RELEASE_ASSERT(kernel32_dll != NULL);
-
-#define LOAD_SYMBOL(symbol) loadSymbol(kernel32_dll, #symbol, symbol)
- supported_ = LOAD_SYMBOL(InitializeConditionVariable) &&
- LOAD_SYMBOL(WakeConditionVariable) &&
- LOAD_SYMBOL(WakeAllConditionVariable) &&
- LOAD_SYMBOL(SleepConditionVariableCS);
-#undef LOAD_SYMBOL
- }
-
- inline bool supported() const {
- return supported_;
- }
-
- void(WINAPI* InitializeConditionVariable)(CONDITION_VARIABLE* ConditionVariable);
- void(WINAPI* WakeAllConditionVariable)(PCONDITION_VARIABLE ConditionVariable);
- void(WINAPI* WakeConditionVariable)(CONDITION_VARIABLE* ConditionVariable);
- BOOL(WINAPI* SleepConditionVariableCS)(CONDITION_VARIABLE* ConditionVariable,
- CRITICAL_SECTION* CriticalSection,
- DWORD dwMilliseconds);
-
-private:
- template <typename T>
- inline bool loadSymbol(HMODULE module, const char* name, T& fn) {
- FARPROC ptr = GetProcAddress(module, name);
- if (!ptr)
- return false;
-
- fn = reinterpret_cast<T>(ptr);
- return true;
- }
-
- bool supported_;
-};
-
-static ConditionVariableNativeImports sNativeImports;
-
// Wrapper for native condition variable APIs.
-struct ConditionVariableNative
-{
- inline void initialize() {
- sNativeImports.InitializeConditionVariable(&cv_);
- }
-
- inline void destroy() {
- // Native condition variables don't require cleanup.
- }
-
- inline void notify_one() { sNativeImports.WakeConditionVariable(&cv_); }
-
- inline void notify_all() { sNativeImports.WakeAllConditionVariable(&cv_); }
-
- inline bool wait(CRITICAL_SECTION* cs, DWORD msec) {
- return sNativeImports.SleepConditionVariableCS(&cv_, cs, msec);
- }
-
-private:
- CONDITION_VARIABLE cv_;
-};
-
-// Fallback condition variable support for Windows XP and Server 2003. Given the
-// difficulty of testing on these antiquated platforms and their rapidly
-// diminishing market share, this implementation trades performance for
-// predictable behavior.
-struct ConditionVariableFallback
-{
- static const uint32_t WAKEUP_MODE_NONE = 0;
- static const uint32_t WAKEUP_MODE_ONE = 0x40000000;
- static const uint32_t WAKEUP_MODE_ALL = 0x80000000;
-
- static const uint32_t WAKEUP_MODE_MASK = WAKEUP_MODE_ONE | WAKEUP_MODE_ALL;
- static const uint32_t SLEEPERS_COUNT_MASK = ~WAKEUP_MODE_MASK;
-
- void initialize()
- {
- // Initialize the state variable to 0 sleepers, no wakeup.
- sleepersCountAndWakeupMode_ = 0 | WAKEUP_MODE_NONE;
-
- // Create a semaphore that prevents threads from entering sleep,
- // or waking other threads while a wakeup is ongoing.
- sleepWakeupSemaphore_ = CreateSemaphoreW(NULL, 1, 1, NULL);
- MOZ_RELEASE_ASSERT(sleepWakeupSemaphore_);
-
- // Use an auto-reset event for waking up a single sleeper.
- wakeOneEvent_ = CreateEventW(NULL, FALSE, FALSE, NULL);
- MOZ_RELEASE_ASSERT(wakeOneEvent_);
-
- // Use a manual-reset event for waking up all sleepers.
- wakeAllEvent_ = CreateEventW(NULL, TRUE, FALSE, NULL);
- MOZ_RELEASE_ASSERT(wakeAllEvent_);
- }
-
- void destroy()
- {
- BOOL r;
-
- MOZ_RELEASE_ASSERT(sleepersCountAndWakeupMode_ == (0 | WAKEUP_MODE_NONE));
-
- r = CloseHandle(sleepWakeupSemaphore_);
- MOZ_RELEASE_ASSERT(r);
-
- r = CloseHandle(wakeOneEvent_);
- MOZ_RELEASE_ASSERT(r);
-
- r = CloseHandle(wakeAllEvent_);
- MOZ_RELEASE_ASSERT(r);
- }
-
-private:
- void wakeup(uint32_t wakeupMode, HANDLE wakeEvent)
- {
- // Ensure that only one thread at a time can wake up others.
- BOOL result = WaitForSingleObject(sleepWakeupSemaphore_, INFINITE);
- MOZ_RELEASE_ASSERT(result == WAIT_OBJECT_0);
-
- // Atomically set the wakeup mode and retrieve the number of sleepers.
- uint32_t wcwm = InterlockedExchangeAdd(&sleepersCountAndWakeupMode_,
- wakeupMode);
- uint32_t sleepersCount = wcwm & SLEEPERS_COUNT_MASK;
- MOZ_RELEASE_ASSERT((wcwm & WAKEUP_MODE_MASK) == WAKEUP_MODE_NONE);
-
- if (sleepersCount > 0) {
- // If there are any sleepers, set the wake event. The (last) woken
- // up thread is responsible for releasing the semaphore.
- BOOL success = SetEvent(wakeEvent);
- MOZ_RELEASE_ASSERT(success);
-
- } else {
- // If there are no sleepers, set the wakeup mode back to 'none'
- // and release the semaphore ourselves.
- sleepersCountAndWakeupMode_ = 0 | WAKEUP_MODE_NONE;
-
- BOOL success = ReleaseSemaphore(sleepWakeupSemaphore_, 1, NULL);
- MOZ_RELEASE_ASSERT(success);
- }
- }
-
-public:
- void notify_one() { wakeup(WAKEUP_MODE_ONE, wakeOneEvent_); }
-
- void notify_all() { wakeup(WAKEUP_MODE_ALL, wakeAllEvent_); }
-
- bool wait(CRITICAL_SECTION* userLock, DWORD msec)
- {
- // Make sure that we can't enter sleep when there are other threads
- // that still need to wake up on either of the wake events being set.
- DWORD result = WaitForSingleObject(sleepWakeupSemaphore_, INFINITE);
- MOZ_RELEASE_ASSERT(result == WAIT_OBJECT_0);
-
- // Register ourselves as a sleeper. Use an atomic operation, because
- // if another thread times out at the same time, it will decrement the
- // sleepers count without acquiring the semaphore.
- uint32_t wcwm = InterlockedIncrement(&sleepersCountAndWakeupMode_);
- MOZ_RELEASE_ASSERT((wcwm & WAKEUP_MODE_MASK) == WAKEUP_MODE_NONE);
-
- // Now that that this thread has been enlisted as a sleeper, it is safe
- // again for other threads to do a wakeup.
- BOOL success = ReleaseSemaphore(sleepWakeupSemaphore_, 1, NULL);
- MOZ_RELEASE_ASSERT(success);
-
- // Release the caller's mutex.
- LeaveCriticalSection(userLock);
-
- // Wait for either event to become signaled, which happens when
- // notify_one() or notify_all() is called, or for a timeout.
- HANDLE handles[2] = { wakeOneEvent_, wakeAllEvent_ };
- DWORD waitResult = WaitForMultipleObjects(2, handles, FALSE, msec);
- MOZ_RELEASE_ASSERT(waitResult == WAIT_OBJECT_0 ||
- waitResult == WAIT_OBJECT_0 + 1 ||
- (waitResult == WAIT_TIMEOUT && msec != INFINITE));
-
- // Atomically decrease the sleepers count and retrieve the wakeup mode
- // and new sleepers count.
- // If the wait returned because wakeOneEvent_ was set, we are certain
- // that the wakeup mode will be WAKEUP_MODE_ONE. In that case,
- // atomically reset the wakeup mode to 'none', because if another
- // thread's sleep times out at same time and it finds that it was the
- // last sleeper, it decides whether or not to reset the wakeOneEvent_
- // based on the current wakeup mode.
- uint32_t sub;
- if (waitResult == WAIT_OBJECT_0)
- sub = 1 | WAKEUP_MODE_ONE;
- else
- sub = 1;
- // Note that InterlockedExchangeAdd returns the old value, but it's
- // easier to work with the new value.
- wcwm = InterlockedExchangeAdd(&sleepersCountAndWakeupMode_, -sub) - sub;
-
- uint32_t wakeupMode = wcwm & WAKEUP_MODE_MASK;
- uint32_t sleepersCount = wcwm & SLEEPERS_COUNT_MASK;
-
- bool releaseSleepWakeupSemaphore = false;
-
- if (waitResult == WAIT_OBJECT_0) {
- // The wake-one event is an auto-reset event so if we're woken by
- // it, it should already have been reset. We also already removed
- // the WAKEUP_MODE_ONE bit so the wakeup mode should now be 'none'
- // again.
- MOZ_RELEASE_ASSERT(wakeupMode == WAKEUP_MODE_NONE);
-
- // The signaling thread has acquired the enter-wakeup semaphore and
- // expects the woken (this) thread to release it again.
- releaseSleepWakeupSemaphore = true;
-
- } else if (waitResult == WAIT_TIMEOUT && wakeupMode == WAKEUP_MODE_ONE &&
- sleepersCount == 0) {
- // In theory a race condition is possible where the last sleeper
- // times out right at the moment that another thread signals it.
- // If that just happened we now have a dangling signal event and
- // mode, but no threads to be woken up by it, and we need to clean
- // that up.
- BOOL success = ResetEvent(wakeOneEvent_);
- MOZ_RELEASE_ASSERT(success);
-
- // This is safe - we are certain there are no other sleepers that
- // could wake up right now, and the semaphore ensures that no
- // non-sleeping threads are messing with
- // sleepersCountAndWakeupMode_.
- sleepersCountAndWakeupMode_ = 0 | WAKEUP_MODE_NONE;
-
- // The signaling thread has acquired the sleep-wakeup semaphore and
- // expects the woken thread to release it. But since there are no
- // sleeping threads left this thread will do it instead.
- releaseSleepWakeupSemaphore = true;
-
- } else if (wakeupMode == WAKEUP_MODE_ALL && sleepersCount == 0) {
- // If this was the last thread waking up in response to a
- // notify_all, clear the wakeup mode and reset the wake-all event.
- // A race condition similar to the case described above could
- // occur, so waitResult could be WAIT_TIMEOUT, but that doesn't
- // matter for the actions that need to be taken.
- MOZ_RELEASE_ASSERT(waitResult = WAIT_OBJECT_0 + 1 ||
- waitResult == WAIT_TIMEOUT);
-
- BOOL success = ResetEvent(wakeAllEvent_);
- MOZ_RELEASE_ASSERT(success);
-
- sleepersCountAndWakeupMode_ = 0 | WAKEUP_MODE_NONE;
-
- // The broadcasting thread has acquired the enter-wakeup semaphore
- // and expects the last thread that wakes up to release it.
- releaseSleepWakeupSemaphore = true;
-
- } else if ((waitResult == WAIT_TIMEOUT && msec != INFINITE) ||
- (waitResult == WAIT_OBJECT_0 + 1 &&
- wakeupMode == WAKEUP_MODE_ALL)) {
- // Either:
- // * The wait timed out but found no active notify_one or notify_all
- // the moment it decreased the wait count.
- // * A notify_all woke up this thread but there are more threads
- // that need to be woken up by the wake-all event.
- // These are ordinary conditions in which we don't have to do
- // anything.
-
- } else {
- MOZ_CRASH("invalid wakeup condition");
- }
-
- // Release the enter-wakeup semaphore if the wakeup condition requires
- // us to do it.
- if (releaseSleepWakeupSemaphore) {
- BOOL success = ReleaseSemaphore(sleepWakeupSemaphore_, 1, NULL);
- MOZ_RELEASE_ASSERT(success);
- }
-
- // Reacquire the user mutex.
- EnterCriticalSection(userLock);
-
- // Return true if woken up, false when timed out.
- if (waitResult == WAIT_TIMEOUT) {
- SetLastError(ERROR_TIMEOUT);
- return false;
- }
- return true;
- }
-
-private:
- uint32_t sleepersCountAndWakeupMode_;
- HANDLE sleepWakeupSemaphore_;
- HANDLE wakeOneEvent_;
- HANDLE wakeAllEvent_;
-};
-
struct js::ConditionVariable::PlatformData
{
- union
- {
- ConditionVariableNative native;
- ConditionVariableFallback fallback;
- };
+ CONDITION_VARIABLE cv_;
};
js::ConditionVariable::ConditionVariable()
{
- if (sNativeImports.supported())
- platformData()->native.initialize();
- else
- platformData()->fallback.initialize();
+ InitializeConditionVariable(&platformData()->cv_);
}
void
js::ConditionVariable::notify_one()
{
- if (sNativeImports.supported())
- platformData()->native.notify_one();
- else
- platformData()->fallback.notify_one();
+ WakeConditionVariable(&platformData()->cv_);
}
void
js::ConditionVariable::notify_all()
{
- if (sNativeImports.supported())
- platformData()->native.notify_all();
- else
- platformData()->fallback.notify_all();
+ WakeAllConditionVariable(&platformData()->cv_);
}
void
js::ConditionVariable::wait(UniqueLock<Mutex>& lock)
{
CRITICAL_SECTION* cs = &lock.lock.platformData()->criticalSection;
- bool r;
- if (sNativeImports.supported())
- r = platformData()->native.wait(cs, INFINITE);
- else
- r = platformData()->fallback.wait(cs, INFINITE);
+ bool r = SleepConditionVariableCS(&platformData()->cv_, cs, INFINITE);
MOZ_RELEASE_ASSERT(r);
}
@@ -390,11 +82,7 @@ js::ConditionVariable::wait_for(UniqueLock<Mutex>& lock,
? INFINITE
: static_cast<DWORD>(msecd);
- BOOL r;
- if (sNativeImports.supported())
- r = platformData()->native.wait(cs, msec);
- else
- r = platformData()->fallback.wait(cs, msec);
+ BOOL r = SleepConditionVariableCS(&platformData()->cv_, cs, msec);
if (r)
return CVStatus::NoTimeout;
MOZ_RELEASE_ASSERT(GetLastError() == ERROR_TIMEOUT);
@@ -403,10 +91,7 @@ js::ConditionVariable::wait_for(UniqueLock<Mutex>& lock,
js::ConditionVariable::~ConditionVariable()
{
- if (sNativeImports.supported())
- platformData()->native.destroy();
- else
- platformData()->fallback.destroy();
+ // Native condition variables don't require cleanup.
}
inline js::ConditionVariable::PlatformData*
diff --git a/js/src/vm/ArgumentsObject.cpp b/js/src/vm/ArgumentsObject.cpp
index d01121ef0..717aa1050 100644
--- a/js/src/vm/ArgumentsObject.cpp
+++ b/js/src/vm/ArgumentsObject.cpp
@@ -676,7 +676,7 @@ UnmappedArgumentsObject::obj_resolve(JSContext* cx, HandleObject obj, HandleId i
if (argsobj->hasOverriddenLength())
return true;
} else {
- if (!JSID_IS_ATOM(id, cx->names().callee) && !JSID_IS_ATOM(id, cx->names().caller))
+ if (!JSID_IS_ATOM(id, cx->names().callee))
return true;
attrs = JSPROP_PERMANENT | JSPROP_GETTER | JSPROP_SETTER | JSPROP_SHARED;
@@ -709,10 +709,6 @@ UnmappedArgumentsObject::obj_enumerate(JSContext* cx, HandleObject obj)
if (!HasProperty(cx, argsobj, id, &found))
return false;
- id = NameToId(cx->names().caller);
- if (!HasProperty(cx, argsobj, id, &found))
- return false;
-
id = SYMBOL_TO_JSID(cx->wellKnownSymbols().iterator);
if (!HasProperty(cx, argsobj, id, &found))
return false;
diff --git a/js/src/vm/AsyncFunction.cpp b/js/src/vm/AsyncFunction.cpp
index bd0b4f32a..f50c87114 100644
--- a/js/src/vm/AsyncFunction.cpp
+++ b/js/src/vm/AsyncFunction.cpp
@@ -107,19 +107,16 @@ WrappedAsyncFunction(JSContext* cx, unsigned argc, Value* vp)
// the async function's body, replacing `await` with `yield`. `wrapped` is a
// function that is visible to the outside, and handles yielded values.
JSObject*
-js::WrapAsyncFunction(JSContext* cx, HandleFunction unwrapped)
+js::WrapAsyncFunctionWithProto(JSContext* cx, HandleFunction unwrapped, HandleObject proto)
{
MOZ_ASSERT(unwrapped->isStarGenerator());
+ MOZ_ASSERT(proto, "We need an explicit prototype to avoid the default"
+ "%FunctionPrototype% fallback in NewFunctionWithProto().");
// Create a new function with AsyncFunctionPrototype, reusing the name and
// the length of `unwrapped`.
- // Step 1.
- RootedObject proto(cx, GlobalObject::getOrCreateAsyncFunctionPrototype(cx, cx->global()));
- if (!proto)
- return nullptr;
-
- RootedAtom funName(cx, unwrapped->name());
+ RootedAtom funName(cx, unwrapped->explicitName());
uint16_t length;
if (!unwrapped->getLength(cx, &length))
return nullptr;
@@ -133,6 +130,9 @@ js::WrapAsyncFunction(JSContext* cx, HandleFunction unwrapped)
if (!wrapped)
return nullptr;
+ if (unwrapped->hasCompileTimeName())
+ wrapped->setCompileTimeName(unwrapped->compileTimeName());
+
// Link them to each other to make GetWrappedAsyncFunction and
// GetUnwrappedAsyncFunction work.
unwrapped->setExtendedSlot(UNWRAPPED_ASYNC_WRAPPED_SLOT, ObjectValue(*wrapped));
@@ -141,6 +141,16 @@ js::WrapAsyncFunction(JSContext* cx, HandleFunction unwrapped)
return wrapped;
}
+JSObject*
+js::WrapAsyncFunction(JSContext* cx, HandleFunction unwrapped)
+{
+ RootedObject proto(cx, GlobalObject::getOrCreateAsyncFunctionPrototype(cx, cx->global()));
+ if (!proto)
+ return nullptr;
+
+ return WrapAsyncFunctionWithProto(cx, unwrapped, proto);
+}
+
enum class ResumeKind {
Normal,
Throw
diff --git a/js/src/vm/AsyncFunction.h b/js/src/vm/AsyncFunction.h
index ddf81a177..d7f2c1311 100644
--- a/js/src/vm/AsyncFunction.h
+++ b/js/src/vm/AsyncFunction.h
@@ -22,6 +22,9 @@ bool
IsWrappedAsyncFunction(JSFunction* fun);
JSObject*
+WrapAsyncFunctionWithProto(JSContext* cx, HandleFunction unwrapped, HandleObject proto);
+
+JSObject*
WrapAsyncFunction(JSContext* cx, HandleFunction unwrapped);
MOZ_MUST_USE bool
diff --git a/js/src/vm/CommonPropertyNames.h b/js/src/vm/CommonPropertyNames.h
index bd0705446..e971dc844 100644
--- a/js/src/vm/CommonPropertyNames.h
+++ b/js/src/vm/CommonPropertyNames.h
@@ -13,7 +13,7 @@
#define FOR_EACH_COMMON_PROPERTYNAME(macro) \
macro(add, add, "add") \
- macro(allowContentSpread, allowContentSpread, "allowContentSpread") \
+ macro(allowContentIter, allowContentIter, "allowContentIter") \
macro(anonymous, anonymous, "anonymous") \
macro(Any, Any, "Any") \
macro(apply, apply, "apply") \
diff --git a/js/src/vm/Debugger.cpp b/js/src/vm/Debugger.cpp
index b6bc7d62a..d16781326 100644
--- a/js/src/vm/Debugger.cpp
+++ b/js/src/vm/Debugger.cpp
@@ -6890,8 +6890,13 @@ class DebuggerSourceGetTextMatcher
bool hasSourceData = ss->hasSourceData();
if (!ss->hasSourceData() && !JSScript::loadSource(cx_, ss, &hasSourceData))
return nullptr;
- return hasSourceData ? ss->substring(cx_, 0, ss->length())
- : NewStringCopyZ<CanGC>(cx_, "[no source]");
+ if (!hasSourceData)
+ return NewStringCopyZ<CanGC>(cx_, "[no source]");
+
+ if (ss->isFunctionBody())
+ return ss->functionBodyString(cx_);
+
+ return ss->substring(cx_, 0, ss->length());
}
ReturnType match(Handle<WasmInstanceObject*> wasmInstance) {
@@ -9504,7 +9509,7 @@ DebuggerObject::name() const
{
MOZ_ASSERT(isFunction());
- return referent()->as<JSFunction>().name();
+ return referent()->as<JSFunction>().explicitName();
}
JSAtom*
diff --git a/js/src/vm/ErrorObject.cpp b/js/src/vm/ErrorObject.cpp
index 47b61b57b..d8d29830b 100644
--- a/js/src/vm/ErrorObject.cpp
+++ b/js/src/vm/ErrorObject.cpp
@@ -164,29 +164,25 @@ js::ErrorObject::getOrCreateErrorReport(JSContext* cx)
}
static bool
-ErrorObject_checkAndUnwrapThis(JSContext* cx, CallArgs& args, const char* fnName,
- MutableHandle<ErrorObject*> error)
+FindErrorInstanceOrPrototype(JSContext* cx, HandleObject obj, MutableHandleObject result)
{
- const Value& thisValue = args.thisv();
-
- if (!thisValue.isObject()) {
- JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_NOT_NONNULL_OBJECT,
- InformalValueTypeName(thisValue));
- return false;
- }
-
- // Walk up the prototype chain until we find the first ErrorObject that has
- // the slots we need. This allows us to support the poor-man's subclassing
- // of error: Object.create(Error.prototype).
-
- RootedObject target(cx, CheckedUnwrap(&thisValue.toObject()));
+ // Walk up the prototype chain until we find an error object instance or
+ // prototype object. This allows code like:
+ // Object.create(Error.prototype).stack
+ // or
+ // function NYI() { }
+ // NYI.prototype = new Error;
+ // (new NYI).stack
+ // to continue returning stacks that are useless, but at least don't throw.
+
+ RootedObject target(cx, CheckedUnwrap(obj));
if (!target) {
JS_ReportErrorASCII(cx, "Permission denied to access object");
return false;
}
RootedObject proto(cx);
- while (!target->is<ErrorObject>()) {
+ while (!IsErrorProtoKey(StandardProtoKeyOrNull(target))) {
if (!GetPrototype(cx, target, &proto))
return false;
@@ -194,7 +190,7 @@ ErrorObject_checkAndUnwrapThis(JSContext* cx, CallArgs& args, const char* fnName
// We walked the whole prototype chain and did not find an Error
// object.
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_INCOMPATIBLE_PROTO,
- js_Error_str, fnName, thisValue.toObject().getClass()->name);
+ js_Error_str, "(get stack)", obj->getClass()->name);
return false;
}
@@ -205,19 +201,40 @@ ErrorObject_checkAndUnwrapThis(JSContext* cx, CallArgs& args, const char* fnName
}
}
- error.set(&target->as<ErrorObject>());
+ result.set(target);
return true;
}
+
+static MOZ_ALWAYS_INLINE bool
+IsObject(HandleValue v)
+{
+ return v.isObject();
+}
+
/* static */ bool
js::ErrorObject::getStack(JSContext* cx, unsigned argc, Value* vp)
{
CallArgs args = CallArgsFromVp(argc, vp);
- Rooted<ErrorObject*> error(cx);
- if (!ErrorObject_checkAndUnwrapThis(cx, args, "(get stack)", &error))
+ // We accept any object here, because of poor-man's subclassing of Error.
+ return CallNonGenericMethod<IsObject, getStack_impl>(cx, args);
+}
+
+/* static */ bool
+js::ErrorObject::getStack_impl(JSContext* cx, const CallArgs& args)
+{
+ RootedObject thisObj(cx, &args.thisv().toObject());
+
+ RootedObject obj(cx);
+ if (!FindErrorInstanceOrPrototype(cx, thisObj, &obj))
return false;
- RootedObject savedFrameObj(cx, error->stack());
+ if (!obj->is<ErrorObject>()) {
+ args.rval().setString(cx->runtime()->emptyString);
+ return true;
+ }
+
+ RootedObject savedFrameObj(cx, obj->as<ErrorObject>().stack());
RootedString stackString(cx);
if (!BuildStackString(cx, savedFrameObj, &stackString))
return false;
@@ -245,12 +262,6 @@ js::ErrorObject::getStack(JSContext* cx, unsigned argc, Value* vp)
return true;
}
-static MOZ_ALWAYS_INLINE bool
-IsObject(HandleValue v)
-{
- return v.isObject();
-}
-
/* static */ bool
js::ErrorObject::setStack(JSContext* cx, unsigned argc, Value* vp)
{
@@ -262,9 +273,7 @@ js::ErrorObject::setStack(JSContext* cx, unsigned argc, Value* vp)
/* static */ bool
js::ErrorObject::setStack_impl(JSContext* cx, const CallArgs& args)
{
- const Value& thisValue = args.thisv();
- MOZ_ASSERT(thisValue.isObject());
- RootedObject thisObj(cx, &thisValue.toObject());
+ RootedObject thisObj(cx, &args.thisv().toObject());
if (!args.requireAtLeast(cx, "(set stack)", 1))
return false;
diff --git a/js/src/vm/ErrorObject.h b/js/src/vm/ErrorObject.h
index 32a691bb4..0c2d00610 100644
--- a/js/src/vm/ErrorObject.h
+++ b/js/src/vm/ErrorObject.h
@@ -38,9 +38,8 @@ class ErrorObject : public NativeObject
ScopedJSFreePtr<JSErrorReport>* errorReport, HandleString fileName, HandleObject stack,
uint32_t lineNumber, uint32_t columnNumber, HandleString message);
- static const ClassSpec errorClassSpec_;
- static const ClassSpec subErrorClassSpec_;
- static const ClassSpec nonGlobalErrorClassSpec_;
+ static const ClassSpec classSpecs[JSEXN_ERROR_LIMIT];
+ static const Class protoClasses[JSEXN_ERROR_LIMIT];
protected:
static const uint32_t EXNTYPE_SLOT = 0;
@@ -54,7 +53,7 @@ class ErrorObject : public NativeObject
static const uint32_t RESERVED_SLOTS = MESSAGE_SLOT + 1;
public:
- static const Class classes[JSEXN_LIMIT];
+ static const Class classes[JSEXN_ERROR_LIMIT];
static const Class * classForType(JSExnType type) {
MOZ_ASSERT(type < JSEXN_WARN);
@@ -107,6 +106,7 @@ class ErrorObject : public NativeObject
// Getter and setter for the Error.prototype.stack accessor.
static bool getStack(JSContext* cx, unsigned argc, Value* vp);
+ static bool getStack_impl(JSContext* cx, const CallArgs& args);
static bool setStack(JSContext* cx, unsigned argc, Value* vp);
static bool setStack_impl(JSContext* cx, const CallArgs& args);
};
diff --git a/js/src/vm/ForOfIterator.cpp b/js/src/vm/ForOfIterator.cpp
index 7bd521a6a..a67b36774 100644
--- a/js/src/vm/ForOfIterator.cpp
+++ b/js/src/vm/ForOfIterator.cpp
@@ -151,6 +151,57 @@ ForOfIterator::next(MutableHandleValue vp, bool* done)
return GetProperty(cx_, resultObj, resultObj, cx_->names().value, vp);
}
+// ES 2017 draft 0f10dba4ad18de92d47d421f378233a2eae8f077 7.4.6.
+// When completion.[[Type]] is throw.
+void
+ForOfIterator::closeThrow()
+{
+ MOZ_ASSERT(iterator);
+
+ RootedValue completionException(cx_);
+ if (cx_->isExceptionPending()) {
+ if (!GetAndClearException(cx_, &completionException))
+ completionException.setUndefined();
+ }
+
+ // Steps 1-2 (implicit)
+
+ // Step 3 (partial).
+ RootedValue returnVal(cx_);
+ if (!GetProperty(cx_, iterator, iterator, cx_->names().return_, &returnVal))
+ return;
+
+ // Step 4.
+ if (returnVal.isUndefined()) {
+ cx_->setPendingException(completionException);
+ return;
+ }
+
+ // Step 3 (remaining part)
+ if (!returnVal.isObject()) {
+ JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, JSMSG_RETURN_NOT_CALLABLE);
+ return;
+ }
+ RootedObject returnObj(cx_, &returnVal.toObject());
+ if (!returnObj->isCallable()) {
+ JS_ReportErrorNumberASCII(cx_, GetErrorMessage, nullptr, JSMSG_RETURN_NOT_CALLABLE);
+ return;
+ }
+
+ // Step 5.
+ RootedValue innerResultValue(cx_);
+ if (!js::Call(cx_, returnVal, iterator, &innerResultValue)) {
+ if (cx_->isExceptionPending())
+ cx_->clearPendingException();
+ }
+
+ // Step 6.
+ cx_->setPendingException(completionException);
+
+ // Steps 7-9 (skipped).
+ return;
+}
+
bool
ForOfIterator::materializeArrayIterator()
{
diff --git a/js/src/vm/GlobalObject.cpp b/js/src/vm/GlobalObject.cpp
index 039be2e32..280548cd6 100644
--- a/js/src/vm/GlobalObject.cpp
+++ b/js/src/vm/GlobalObject.cpp
@@ -802,10 +802,10 @@ GlobalObject::getSelfHostedFunction(JSContext* cx, Handle<GlobalObject*> global,
return false;
if (exists) {
RootedFunction fun(cx, &funVal.toObject().as<JSFunction>());
- if (fun->name() == name)
+ if (fun->explicitName() == name)
return true;
- if (fun->name() == selfHostedName) {
+ if (fun->explicitName() == selfHostedName) {
// This function was initially cloned because it was called by
// other self-hosted code, so the clone kept its self-hosted name,
// instead of getting the name it's intended to have in content
diff --git a/js/src/vm/GlobalObject.h b/js/src/vm/GlobalObject.h
index 05984bc5f..3534ef2f6 100644
--- a/js/src/vm/GlobalObject.h
+++ b/js/src/vm/GlobalObject.h
@@ -427,6 +427,18 @@ class GlobalObject : public NativeObject
return &global->getPrototype(key).toObject();
}
+ static JSFunction*
+ getOrCreateErrorConstructor(JSContext* cx, Handle<GlobalObject*> global) {
+ if (!ensureConstructor(cx, global, JSProto_Error))
+ return nullptr;
+ return &global->getConstructor(JSProto_Error).toObject().as<JSFunction>();
+ }
+
+ static JSObject*
+ getOrCreateErrorPrototype(JSContext* cx, Handle<GlobalObject*> global) {
+ return getOrCreateCustomErrorPrototype(cx, global, JSEXN_ERR);
+ }
+
static NativeObject* getOrCreateSetPrototype(JSContext* cx, Handle<GlobalObject*> global) {
if (!ensureConstructor(cx, global, JSProto_Set))
return nullptr;
@@ -1003,10 +1015,7 @@ GenericCreatePrototype(JSContext* cx, JSProtoKey key)
inline JSProtoKey
StandardProtoKeyOrNull(const JSObject* obj)
{
- JSProtoKey key = JSCLASS_CACHED_PROTO_KEY(obj->getClass());
- if (key == JSProto_Error)
- return GetExceptionProtoKey(obj->as<ErrorObject>().type());
- return key;
+ return JSCLASS_CACHED_PROTO_KEY(obj->getClass());
}
JSObject*
diff --git a/js/src/vm/Interpreter.cpp b/js/src/vm/Interpreter.cpp
index fbf526ae5..b747e4d7a 100644
--- a/js/src/vm/Interpreter.cpp
+++ b/js/src/vm/Interpreter.cpp
@@ -282,8 +282,6 @@ MakeDefaultConstructor(JSContext* cx, JSOp op, JSAtom* atom, HandleObject proto)
ctor->setIsConstructor();
ctor->setIsClassConstructor();
- if (derived)
- ctor->setHasRest();
MOZ_ASSERT(ctor->infallibleIsDefaultClassConstructor(cx));
@@ -1082,6 +1080,9 @@ js::UnwindEnvironmentToTryPc(JSScript* script, JSTryNote* tn)
if (tn->kind == JSTRY_CATCH || tn->kind == JSTRY_FINALLY) {
pc -= JSOP_TRY_LENGTH;
MOZ_ASSERT(*pc == JSOP_TRY);
+ } else if (tn->kind == JSTRY_DESTRUCTURING_ITERCLOSE) {
+ pc -= JSOP_TRY_DESTRUCTURING_ITERCLOSE_LENGTH;
+ MOZ_ASSERT(*pc == JSOP_TRY_DESTRUCTURING_ITERCLOSE);
}
return pc;
}
@@ -1158,6 +1159,7 @@ enum HandleErrorContinuation
static HandleErrorContinuation
ProcessTryNotes(JSContext* cx, EnvironmentIter& ei, InterpreterRegs& regs)
{
+ bool inForOfIterClose = false;
for (TryNoteIterInterpreter tni(cx, regs); !tni.done(); ++tni) {
JSTryNote* tn = *tni;
@@ -1166,10 +1168,38 @@ ProcessTryNotes(JSContext* cx, EnvironmentIter& ei, InterpreterRegs& regs)
/* Catch cannot intercept the closing of a generator. */
if (cx->isClosingGenerator())
break;
+
+ // If IteratorClose due to abnormal completion threw inside a
+ // for-of loop, it is not catchable by try statements inside of
+ // the for-of loop.
+ //
+ // This is handled by this weirdness in the exception handler
+ // instead of in bytecode because it is hard to do so in bytecode:
+ //
+ // 1. IteratorClose emitted due to abnormal completion (break,
+ // throw, return) are emitted inline, at the source location of
+ // the break, throw, or return statement. For example:
+ //
+ // for (x of iter) {
+ // try { return; } catch (e) { }
+ // }
+ //
+ // From the try-note nesting's perspective, the IteratorClose
+ // resulting from |return| is covered by the inner try, when it
+ // should not be.
+ //
+ // 2. Try-catch notes cannot be disjoint. That is, we can't have
+ // multiple notes with disjoint pc ranges jumping to the same
+ // catch block.
+ if (inForOfIterClose)
+ break;
SettleOnTryNote(cx, tn, ei, regs);
return CatchContinuation;
case JSTRY_FINALLY:
+ // See note above.
+ if (inForOfIterClose)
+ break;
SettleOnTryNote(cx, tn, ei, regs);
return FinallyContinuation;
@@ -1191,7 +1221,31 @@ ProcessTryNotes(JSContext* cx, EnvironmentIter& ei, InterpreterRegs& regs)
break;
}
+ case JSTRY_DESTRUCTURING_ITERCLOSE: {
+ // Whether the destructuring iterator is done is at the top of the
+ // stack. The iterator object is second from the top.
+ MOZ_ASSERT(tn->stackDepth > 1);
+ Value* sp = regs.spForStackDepth(tn->stackDepth);
+ RootedValue doneValue(cx, sp[-1]);
+ bool done = ToBoolean(doneValue);
+ if (!done) {
+ RootedObject iterObject(cx, &sp[-2].toObject());
+ if (!IteratorCloseForException(cx, iterObject)) {
+ SettleOnTryNote(cx, tn, ei, regs);
+ return ErrorReturnContinuation;
+ }
+ }
+ break;
+ }
+
+ case JSTRY_FOR_OF_ITERCLOSE:
+ inForOfIterClose = true;
+ break;
+
case JSTRY_FOR_OF:
+ inForOfIterClose = false;
+ break;
+
case JSTRY_LOOP:
break;
@@ -1862,15 +1916,11 @@ CASE(EnableInterruptsPseudoOpcode)
/* Various 1-byte no-ops. */
CASE(JSOP_NOP)
CASE(JSOP_NOP_DESTRUCTURING)
-CASE(JSOP_UNUSED182)
-CASE(JSOP_UNUSED183)
-CASE(JSOP_UNUSED187)
CASE(JSOP_UNUSED192)
CASE(JSOP_UNUSED209)
CASE(JSOP_UNUSED210)
CASE(JSOP_UNUSED211)
-CASE(JSOP_UNUSED219)
-CASE(JSOP_UNUSED220)
+CASE(JSOP_TRY_DESTRUCTURING_ITERCLOSE)
CASE(JSOP_UNUSED221)
CASE(JSOP_UNUSED222)
CASE(JSOP_UNUSED223)
@@ -2159,6 +2209,13 @@ CASE(JSOP_ENDITER)
}
END_CASE(JSOP_ENDITER)
+CASE(JSOP_ISGENCLOSING)
+{
+ bool b = REGS.sp[-1].isMagic(JS_GENERATOR_CLOSING);
+ PUSH_BOOLEAN(b);
+}
+END_CASE(JSOP_ISGENCLOSING)
+
CASE(JSOP_DUP)
{
MOZ_ASSERT(REGS.stackDepth() >= 1);
@@ -2196,6 +2253,16 @@ CASE(JSOP_PICK)
}
END_CASE(JSOP_PICK)
+CASE(JSOP_UNPICK)
+{
+ int i = GET_UINT8(REGS.pc);
+ MOZ_ASSERT(REGS.stackDepth() >= unsigned(i) + 1);
+ Value lval = REGS.sp[-1];
+ memmove(REGS.sp - i, REGS.sp - (i + 1), sizeof(Value) * i);
+ REGS.sp[-(i + 1)] = lval;
+}
+END_CASE(JSOP_UNPICK)
+
CASE(JSOP_BINDGNAME)
CASE(JSOP_BINDNAME)
{
@@ -2597,6 +2664,15 @@ CASE(JSOP_CHECKISOBJ)
}
END_CASE(JSOP_CHECKISOBJ)
+CASE(JSOP_CHECKISCALLABLE)
+{
+ if (!IsCallable(REGS.sp[-1])) {
+ MOZ_ALWAYS_FALSE(ThrowCheckIsCallable(cx, CheckIsCallableKind(GET_UINT8(REGS.pc))));
+ goto error;
+ }
+}
+END_CASE(JSOP_CHECKISCALLABLE)
+
CASE(JSOP_CHECKTHIS)
{
if (REGS.sp[-1].isMagic(JS_UNINITIALIZED_LEXICAL)) {
@@ -3484,6 +3560,19 @@ CASE(JSOP_TOASYNC)
}
END_CASE(JSOP_TOASYNC)
+CASE(JSOP_SETFUNNAME)
+{
+ MOZ_ASSERT(REGS.stackDepth() >= 2);
+ FunctionPrefixKind prefixKind = FunctionPrefixKind(GET_UINT8(REGS.pc));
+ ReservedRooted<Value> name(&rootValue0, REGS.sp[-1]);
+ ReservedRooted<JSFunction*> fun(&rootFunction0, &REGS.sp[-2].toObject().as<JSFunction>());
+ if (!SetFunctionNameIfNoOwnName(cx, fun, name, prefixKind))
+ goto error;
+
+ REGS.sp--;
+}
+END_CASE(JSOP_SETFUNNAME)
+
CASE(JSOP_CALLEE)
MOZ_ASSERT(REGS.fp()->isFunctionFrame());
PUSH_COPY(REGS.fp()->calleev());
@@ -4345,7 +4434,7 @@ js::DefFunOperation(JSContext* cx, HandleScript script, HandleObject envChain,
parent = parent->enclosingEnvironment();
/* ES5 10.5 (NB: with subsequent errata). */
- RootedPropertyName name(cx, fun->name()->asPropertyName());
+ RootedPropertyName name(cx, fun->explicitName()->asPropertyName());
RootedShape shape(cx);
RootedObject pobj(cx);
@@ -4993,7 +5082,7 @@ js::ReportRuntimeLexicalError(JSContext* cx, unsigned errorNumber,
RootedPropertyName name(cx);
if (op == JSOP_THROWSETCALLEE) {
- name = script->functionNonDelazifying()->name()->asPropertyName();
+ name = script->functionNonDelazifying()->explicitName()->asPropertyName();
} else if (IsLocalOp(op)) {
name = FrameSlotName(script, pc)->asPropertyName();
} else if (IsAtomOp(op)) {
@@ -5021,7 +5110,16 @@ js::ThrowCheckIsObject(JSContext* cx, CheckIsObjectKind kind)
{
switch (kind) {
case CheckIsObjectKind::IteratorNext:
- JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_NEXT_RETURNED_PRIMITIVE);
+ JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
+ JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, "next");
+ break;
+ case CheckIsObjectKind::IteratorReturn:
+ JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
+ JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, "return");
+ break;
+ case CheckIsObjectKind::IteratorThrow:
+ JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr,
+ JSMSG_ITER_METHOD_RETURNED_PRIMITIVE, "throw");
break;
case CheckIsObjectKind::GetIterator:
JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_GET_ITER_RETURNED_PRIMITIVE);
@@ -5033,6 +5131,19 @@ js::ThrowCheckIsObject(JSContext* cx, CheckIsObjectKind kind)
}
bool
+js::ThrowCheckIsCallable(JSContext* cx, CheckIsCallableKind kind)
+{
+ switch (kind) {
+ case CheckIsCallableKind::IteratorReturn:
+ JS_ReportErrorNumberASCII(cx, GetErrorMessage, nullptr, JSMSG_RETURN_NOT_CALLABLE);
+ break;
+ default:
+ MOZ_CRASH("Unknown kind");
+ }
+ return false;
+}
+
+bool
js::ThrowUninitializedThis(JSContext* cx, AbstractFramePtr frame)
{
RootedFunction fun(cx);
@@ -5061,8 +5172,8 @@ js::ThrowUninitializedThis(JSContext* cx, AbstractFramePtr frame)
if (fun->isDerivedClassConstructor()) {
const char* name = "anonymous";
JSAutoByteString str;
- if (fun->name()) {
- if (!AtomToPrintableString(cx, fun->name(), &str))
+ if (fun->explicitName()) {
+ if (!AtomToPrintableString(cx, fun->explicitName(), &str))
return false;
name = str.ptr();
}
diff --git a/js/src/vm/Interpreter.h b/js/src/vm/Interpreter.h
index 1ffe1fdca..330dbef5f 100644
--- a/js/src/vm/Interpreter.h
+++ b/js/src/vm/Interpreter.h
@@ -562,12 +562,21 @@ ReportRuntimeRedeclaration(JSContext* cx, HandlePropertyName name, const char* r
enum class CheckIsObjectKind : uint8_t {
IteratorNext,
+ IteratorReturn,
+ IteratorThrow,
GetIterator
};
bool
ThrowCheckIsObject(JSContext* cx, CheckIsObjectKind kind);
+enum class CheckIsCallableKind : uint8_t {
+ IteratorReturn
+};
+
+bool
+ThrowCheckIsCallable(JSContext* cx, CheckIsCallableKind kind);
+
bool
ThrowUninitializedThis(JSContext* cx, AbstractFramePtr frame);
diff --git a/js/src/vm/ObjectGroup.cpp b/js/src/vm/ObjectGroup.cpp
index 7be697fb6..d6a8fcaa4 100644
--- a/js/src/vm/ObjectGroup.cpp
+++ b/js/src/vm/ObjectGroup.cpp
@@ -6,6 +6,7 @@
#include "vm/ObjectGroup.h"
+#include "jsexn.h"
#include "jshashutil.h"
#include "jsobj.h"
@@ -578,11 +579,10 @@ ObjectGroup::defaultNewGroup(ExclusiveContext* cx, const Class* clasp,
AddTypePropertyId(cx, group, nullptr, NameToId(names.lastIndex), TypeSet::Int32Type());
} else if (clasp == &StringObject::class_) {
AddTypePropertyId(cx, group, nullptr, NameToId(names.length), TypeSet::Int32Type());
- } else if (ErrorObject::isErrorClass((clasp))) {
+ } else if (ErrorObject::isErrorClass(clasp)) {
AddTypePropertyId(cx, group, nullptr, NameToId(names.fileName), TypeSet::StringType());
AddTypePropertyId(cx, group, nullptr, NameToId(names.lineNumber), TypeSet::Int32Type());
AddTypePropertyId(cx, group, nullptr, NameToId(names.columnNumber), TypeSet::Int32Type());
- AddTypePropertyId(cx, group, nullptr, NameToId(names.stack), TypeSet::StringType());
}
return group;
diff --git a/js/src/vm/Opcodes.h b/js/src/vm/Opcodes.h
index 18ae6f073..4b044c8d8 100644
--- a/js/src/vm/Opcodes.h
+++ b/js/src/vm/Opcodes.h
@@ -1870,9 +1870,24 @@
* Stack: =>
*/ \
macro(JSOP_POPVARENV, 181, "popvarenv", NULL, 1, 0, 0, JOF_BYTE) \
- macro(JSOP_UNUSED182, 182,"unused182", NULL, 1, 0, 0, JOF_BYTE) \
- macro(JSOP_UNUSED183, 183,"unused183", NULL, 1, 0, 0, JOF_BYTE) \
- \
+ /*
+ * Pops the top two values on the stack as 'name' and 'fun', defines the
+ * name of 'fun' to 'name' with prefix if any, and pushes 'fun' back onto
+ * the stack.
+ * Category: Statements
+ * Type: Function
+ * Operands: uint8_t prefixKind
+ * Stack: fun, name => fun
+ */ \
+ macro(JSOP_SETFUNNAME, 182,"setfunname", NULL, 2, 2, 1, JOF_UINT8) \
+ /*
+ * Moves the top of the stack value under the nth element of the stack.
+ * Category: Operators
+ * Type: Stack Operations
+ * Operands: uint8_t n
+ * Stack: v[n], v[n-1], ..., v[1], v[0] => v[0], v[n], v[n-1], ..., v[1]
+ */ \
+ macro(JSOP_UNPICK, 183,"unpick", NULL, 2, 0, 0, JOF_UINT8) \
/*
* Pops the top of stack value, pushes property of it onto the stack.
*
@@ -1901,8 +1916,16 @@
* Stack: => this
*/ \
macro(JSOP_GLOBALTHIS, 186,"globalthis", NULL, 1, 0, 1, JOF_BYTE) \
- macro(JSOP_UNUSED187, 187,"unused187", NULL, 1, 0, 0, JOF_BYTE) \
- \
+ /*
+ * Pushes a boolean indicating whether the top of the stack is
+ * MagicValue(JS_GENERATOR_CLOSING).
+ *
+ * Category: Statements
+ * Type: For-In Statement
+ * Operands:
+ * Stack: val => val, res
+ */ \
+ macro(JSOP_ISGENCLOSING, 187, "isgenclosing", NULL, 1, 1, 2, JOF_BYTE) \
/*
* Pushes unsigned 24-bit int immediate integer operand onto the stack.
* Category: Literals
@@ -2178,8 +2201,26 @@
*/ \
macro(JSOP_HOLE, 218, "hole", NULL, 1, 0, 1, JOF_BYTE) \
\
- macro(JSOP_UNUSED219, 219,"unused219", NULL, 1, 0, 0, JOF_BYTE) \
- macro(JSOP_UNUSED220, 220,"unused220", NULL, 1, 0, 0, JOF_BYTE) \
+ /*
+ * Checks that the top value on the stack is callable, and throws a
+ * TypeError if not. The operand 'kind' is used only to generate an
+ * appropriate error message.
+ * Category: Statements
+ * Type: Function
+ * Operands: uint8_t kind
+ * Stack: result => result, callable
+ */ \
+ macro(JSOP_CHECKISCALLABLE, 219, "checkiscallable", NULL, 2, 1, 1, JOF_UINT8) \
+ \
+ /*
+ * No-op used by the exception unwinder to determine the correct
+ * environment to unwind to when performing IteratorClose due to
+ * destructuring.
+ * Category: Other
+ * Operands:
+ * Stack: =>
+ */ \
+ macro(JSOP_TRY_DESTRUCTURING_ITERCLOSE, 220, "try-destructuring-iterclose", NULL, 1, 0, 0, JOF_BYTE) \
macro(JSOP_UNUSED221, 221,"unused221", NULL, 1, 0, 0, JOF_BYTE) \
macro(JSOP_UNUSED222, 222,"unused222", NULL, 1, 0, 0, JOF_BYTE) \
macro(JSOP_UNUSED223, 223,"unused223", NULL, 1, 0, 0, JOF_BYTE) \
diff --git a/js/src/vm/RegExpObject.cpp b/js/src/vm/RegExpObject.cpp
index 97f1163aa..e0b44e1eb 100644
--- a/js/src/vm/RegExpObject.cpp
+++ b/js/src/vm/RegExpObject.cpp
@@ -196,6 +196,12 @@ RegExpObject::trace(JSTracer* trc, JSObject* obj)
}
}
+static JSObject*
+CreateRegExpPrototype(JSContext* cx, JSProtoKey key)
+{
+ return cx->global()->createBlankPrototype(cx, &RegExpObject::protoClass_);
+}
+
static const ClassOps RegExpObjectClassOps = {
nullptr, /* addProperty */
nullptr, /* delProperty */
@@ -229,6 +235,13 @@ const Class RegExpObject::class_ = {
&RegExpObjectClassSpec
};
+const Class RegExpObject::protoClass_ = {
+ js_Object_str,
+ JSCLASS_HAS_CACHED_PROTO(JSProto_RegExp),
+ JS_NULL_CLASS_OPS,
+ &RegExpObjectClassSpec
+};
+
RegExpObject*
RegExpObject::create(ExclusiveContext* cx, const char16_t* chars, size_t length, RegExpFlag flags,
TokenStream* tokenStream, LifoAlloc& alloc)
diff --git a/js/src/vm/RegExpObject.h b/js/src/vm/RegExpObject.h
index d6dde1668..dc428a973 100644
--- a/js/src/vm/RegExpObject.h
+++ b/js/src/vm/RegExpObject.h
@@ -79,9 +79,6 @@ RegExpAlloc(ExclusiveContext* cx, HandleObject proto = nullptr);
extern JSObject*
CloneRegExpObject(JSContext* cx, JSObject* regexp);
-extern JSObject*
-CreateRegExpPrototype(JSContext* cx, JSProtoKey key);
-
/*
* A RegExpShared is the compiled representation of a regexp. A RegExpShared is
* potentially pointed to by multiple RegExpObjects. Additionally, C++ code may
@@ -411,6 +408,7 @@ class RegExpObject : public NativeObject
static const unsigned PRIVATE_SLOT = 3;
static const Class class_;
+ static const Class protoClass_;
// The maximum number of pairs a MatchResult can have, without having to
// allocate a bigger MatchResult.
diff --git a/js/src/vm/SelfHosting.cpp b/js/src/vm/SelfHosting.cpp
index 6737e774c..bf49f2268 100644
--- a/js/src/vm/SelfHosting.cpp
+++ b/js/src/vm/SelfHosting.cpp
@@ -2878,7 +2878,7 @@ CloneObject(JSContext* cx, HandleNativeObject selfHostedObject)
RootedObject clone(cx);
if (selfHostedObject->is<JSFunction>()) {
RootedFunction selfHostedFunction(cx, &selfHostedObject->as<JSFunction>());
- bool hasName = selfHostedFunction->name() != nullptr;
+ bool hasName = selfHostedFunction->explicitName() != nullptr;
// Arrow functions use the first extended slot for their lexical |this| value.
MOZ_ASSERT(!selfHostedFunction->isArrow());
@@ -2894,7 +2894,7 @@ CloneObject(JSContext* cx, HandleNativeObject selfHostedObject)
// self-hosting compartment has to be stored on the clone.
if (clone && hasName) {
clone->as<JSFunction>().setExtendedSlot(LAZY_FUNCTION_NAME_SLOT,
- StringValue(selfHostedFunction->name()));
+ StringValue(selfHostedFunction->explicitName()));
}
} else if (selfHostedObject->is<RegExpObject>()) {
RegExpObject& reobj = selfHostedObject->as<RegExpObject>();
@@ -2977,10 +2977,10 @@ JSRuntime::createLazySelfHostedFunctionClone(JSContext* cx, HandlePropertyName s
return false;
if (!selfHostedFun->isClassConstructor() && !selfHostedFun->hasGuessedAtom() &&
- selfHostedFun->name() != selfHostedName)
+ selfHostedFun->explicitName() != selfHostedName)
{
MOZ_ASSERT(selfHostedFun->getExtendedSlot(HAS_SELFHOSTED_CANONICAL_NAME_SLOT).toBoolean());
- funName = selfHostedFun->name();
+ funName = selfHostedFun->explicitName();
}
fun.set(NewScriptedFunction(cx, nargs, JSFunction::INTERPRETED_LAZY,
@@ -3022,7 +3022,7 @@ JSRuntime::cloneSelfHostedFunctionScript(JSContext* cx, HandlePropertyName name,
MOZ_ASSERT(!targetFun->isInterpretedLazy());
MOZ_ASSERT(sourceFun->nargs() == targetFun->nargs());
- MOZ_ASSERT(sourceFun->hasRest() == targetFun->hasRest());
+ MOZ_ASSERT(sourceScript->hasRest() == targetFun->nonLazyScript()->hasRest());
// The target function might have been relazified after its flags changed.
targetFun->setFlags(targetFun->flags() | sourceFun->flags());
diff --git a/js/src/vm/Shape.cpp b/js/src/vm/Shape.cpp
index a64dc529a..306a2c540 100644
--- a/js/src/vm/Shape.cpp
+++ b/js/src/vm/Shape.cpp
@@ -1214,6 +1214,10 @@ JSObject::setFlags(ExclusiveContext* cx, BaseShape::Flag flags, GenerateShape ge
RootedObject self(cx, this);
+ Shape* existingShape = self->ensureShape(cx);
+ if (!existingShape)
+ return false;
+
if (isNative() && as<NativeObject>().inDictionaryMode()) {
if (generateShape == GENERATE_SHAPE && !as<NativeObject>().generateOwnShape(cx))
return false;
@@ -1227,10 +1231,6 @@ JSObject::setFlags(ExclusiveContext* cx, BaseShape::Flag flags, GenerateShape ge
return true;
}
- Shape* existingShape = self->ensureShape(cx);
- if (!existingShape)
- return false;
-
Shape* newShape = Shape::setObjectFlags(cx, flags, self->taggedProto(), existingShape);
if (!newShape)
return false;
diff --git a/js/src/vm/Stack.cpp b/js/src/vm/Stack.cpp
index 439bb1ed4..87e95c893 100644
--- a/js/src/vm/Stack.cpp
+++ b/js/src/vm/Stack.cpp
@@ -85,7 +85,7 @@ InterpreterFrame::isNonGlobalEvalFrame() const
JSObject*
InterpreterFrame::createRestParameter(JSContext* cx)
{
- MOZ_ASSERT(callee().hasRest());
+ MOZ_ASSERT(script()->hasRest());
unsigned nformal = callee().nargs() - 1, nactual = numActualArgs();
unsigned nrest = (nactual > nformal) ? nactual - nformal : 0;
Value* restvp = argv() + nformal;
diff --git a/js/src/vm/Stopwatch.h b/js/src/vm/Stopwatch.h
index a1b8bbbcb..38a3eb801 100644
--- a/js/src/vm/Stopwatch.h
+++ b/js/src/vm/Stopwatch.h
@@ -301,9 +301,9 @@ struct PerformanceMonitoring {
#if WINVER >= 0x0600
struct cpuid_t {
- WORD group_;
- BYTE number_;
- cpuid_t(WORD group, BYTE number)
+ uint16_t group_;
+ uint8_t number_;
+ cpuid_t(uint16_t group, uint8_t number)
: group_(group),
number_(number)
{ }
diff --git a/js/src/vm/StructuredClone.cpp b/js/src/vm/StructuredClone.cpp
index 4b01cda85..3a062c3b8 100644
--- a/js/src/vm/StructuredClone.cpp
+++ b/js/src/vm/StructuredClone.cpp
@@ -2188,12 +2188,14 @@ JSStructuredCloneReader::readHeader()
return in.reportTruncated();
if (tag != SCTAG_HEADER) {
- // Old structured clone buffer. We must have read it from disk or
- // somewhere, so we can assume it's scope-compatible.
+ // Old structured clone buffer. We must have read it from disk.
+ storedScope = JS::StructuredCloneScope::DifferentProcess;
return true;
}
MOZ_ALWAYS_TRUE(in.readPair(&tag, &data));
+ storedScope = JS::StructuredCloneScope(data);
+
if (data != uint32_t(JS::StructuredCloneScope::SameProcessSameThread) &&
data != uint32_t(JS::StructuredCloneScope::SameProcessDifferentThread) &&
data != uint32_t(JS::StructuredCloneScope::DifferentProcess))
@@ -2202,7 +2204,6 @@ JSStructuredCloneReader::readHeader()
"invalid structured clone scope");
return false;
}
- storedScope = JS::StructuredCloneScope(data);
if (storedScope < allowedScope) {
JS_ReportErrorNumberASCII(context(), GetErrorMessage, nullptr, JSMSG_SC_BAD_SERIALIZED_DATA,
"incompatible structured clone scope");
diff --git a/js/src/vm/TypeInference.cpp b/js/src/vm/TypeInference.cpp
index 2a7762e4f..3d09c7464 100644
--- a/js/src/vm/TypeInference.cpp
+++ b/js/src/vm/TypeInference.cpp
@@ -4541,7 +4541,7 @@ TypeScript::printTypes(JSContext* cx, HandleScript script) const
uintptr_t(script.get()), script->filename(), script->lineno());
if (script->functionNonDelazifying()) {
- if (JSAtom* name = script->functionNonDelazifying()->name())
+ if (JSAtom* name = script->functionNonDelazifying()->explicitName())
name->dumpCharsNoNewline();
}
diff --git a/js/src/vm/TypedArrayObject.cpp b/js/src/vm/TypedArrayObject.cpp
index 9d4ee94c6..ae97be0de 100644
--- a/js/src/vm/TypedArrayObject.cpp
+++ b/js/src/vm/TypedArrayObject.cpp
@@ -2870,7 +2870,7 @@ bool
DataViewObject::defineGetter(JSContext* cx, PropertyName* name, HandleNativeObject proto)
{
RootedId id(cx, NameToId(name));
- RootedAtom atom(cx, IdToFunctionName(cx, id, "get"));
+ RootedAtom atom(cx, IdToFunctionName(cx, id, FunctionPrefixKind::Get));
if (!atom)
return false;
unsigned attrs = JSPROP_SHARED | JSPROP_GETTER;
diff --git a/js/src/vm/Unicode.cpp b/js/src/vm/Unicode.cpp
index f4acf8f31..82541c231 100644
--- a/js/src/vm/Unicode.cpp
+++ b/js/src/vm/Unicode.cpp
@@ -1748,3 +1748,882 @@ const uint8_t unicode::folding_index2[] = {
0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
};
+bool
+js::unicode::IsIdentifierStartNonBMP(uint32_t codePoint)
+{
+ if (codePoint >= 0x10000 && codePoint <= 0x1000b)
+ return true;
+ if (codePoint >= 0x1000d && codePoint <= 0x10026)
+ return true;
+ if (codePoint >= 0x10028 && codePoint <= 0x1003a)
+ return true;
+ if (codePoint >= 0x1003c && codePoint <= 0x1003d)
+ return true;
+ if (codePoint >= 0x1003f && codePoint <= 0x1004d)
+ return true;
+ if (codePoint >= 0x10050 && codePoint <= 0x1005d)
+ return true;
+ if (codePoint >= 0x10080 && codePoint <= 0x100fa)
+ return true;
+ if (codePoint >= 0x10140 && codePoint <= 0x10174)
+ return true;
+ if (codePoint >= 0x10280 && codePoint <= 0x1029c)
+ return true;
+ if (codePoint >= 0x102a0 && codePoint <= 0x102d0)
+ return true;
+ if (codePoint >= 0x10300 && codePoint <= 0x1031f)
+ return true;
+ if (codePoint >= 0x10330 && codePoint <= 0x1034a)
+ return true;
+ if (codePoint >= 0x10350 && codePoint <= 0x10375)
+ return true;
+ if (codePoint >= 0x10380 && codePoint <= 0x1039d)
+ return true;
+ if (codePoint >= 0x103a0 && codePoint <= 0x103c3)
+ return true;
+ if (codePoint >= 0x103c8 && codePoint <= 0x103cf)
+ return true;
+ if (codePoint >= 0x103d1 && codePoint <= 0x103d5)
+ return true;
+ if (codePoint >= 0x10400 && codePoint <= 0x1049d)
+ return true;
+ if (codePoint >= 0x104b0 && codePoint <= 0x104d3)
+ return true;
+ if (codePoint >= 0x104d8 && codePoint <= 0x104fb)
+ return true;
+ if (codePoint >= 0x10500 && codePoint <= 0x10527)
+ return true;
+ if (codePoint >= 0x10530 && codePoint <= 0x10563)
+ return true;
+ if (codePoint >= 0x10600 && codePoint <= 0x10736)
+ return true;
+ if (codePoint >= 0x10740 && codePoint <= 0x10755)
+ return true;
+ if (codePoint >= 0x10760 && codePoint <= 0x10767)
+ return true;
+ if (codePoint >= 0x10800 && codePoint <= 0x10805)
+ return true;
+ if (codePoint >= 0x10808 && codePoint <= 0x10808)
+ return true;
+ if (codePoint >= 0x1080a && codePoint <= 0x10835)
+ return true;
+ if (codePoint >= 0x10837 && codePoint <= 0x10838)
+ return true;
+ if (codePoint >= 0x1083c && codePoint <= 0x1083c)
+ return true;
+ if (codePoint >= 0x1083f && codePoint <= 0x10855)
+ return true;
+ if (codePoint >= 0x10860 && codePoint <= 0x10876)
+ return true;
+ if (codePoint >= 0x10880 && codePoint <= 0x1089e)
+ return true;
+ if (codePoint >= 0x108e0 && codePoint <= 0x108f2)
+ return true;
+ if (codePoint >= 0x108f4 && codePoint <= 0x108f5)
+ return true;
+ if (codePoint >= 0x10900 && codePoint <= 0x10915)
+ return true;
+ if (codePoint >= 0x10920 && codePoint <= 0x10939)
+ return true;
+ if (codePoint >= 0x10980 && codePoint <= 0x109b7)
+ return true;
+ if (codePoint >= 0x109be && codePoint <= 0x109bf)
+ return true;
+ if (codePoint >= 0x10a00 && codePoint <= 0x10a00)
+ return true;
+ if (codePoint >= 0x10a10 && codePoint <= 0x10a13)
+ return true;
+ if (codePoint >= 0x10a15 && codePoint <= 0x10a17)
+ return true;
+ if (codePoint >= 0x10a19 && codePoint <= 0x10a33)
+ return true;
+ if (codePoint >= 0x10a60 && codePoint <= 0x10a7c)
+ return true;
+ if (codePoint >= 0x10a80 && codePoint <= 0x10a9c)
+ return true;
+ if (codePoint >= 0x10ac0 && codePoint <= 0x10ac7)
+ return true;
+ if (codePoint >= 0x10ac9 && codePoint <= 0x10ae4)
+ return true;
+ if (codePoint >= 0x10b00 && codePoint <= 0x10b35)
+ return true;
+ if (codePoint >= 0x10b40 && codePoint <= 0x10b55)
+ return true;
+ if (codePoint >= 0x10b60 && codePoint <= 0x10b72)
+ return true;
+ if (codePoint >= 0x10b80 && codePoint <= 0x10b91)
+ return true;
+ if (codePoint >= 0x10c00 && codePoint <= 0x10c48)
+ return true;
+ if (codePoint >= 0x10c80 && codePoint <= 0x10cb2)
+ return true;
+ if (codePoint >= 0x10cc0 && codePoint <= 0x10cf2)
+ return true;
+ if (codePoint >= 0x11003 && codePoint <= 0x11037)
+ return true;
+ if (codePoint >= 0x11083 && codePoint <= 0x110af)
+ return true;
+ if (codePoint >= 0x110d0 && codePoint <= 0x110e8)
+ return true;
+ if (codePoint >= 0x11103 && codePoint <= 0x11126)
+ return true;
+ if (codePoint >= 0x11150 && codePoint <= 0x11172)
+ return true;
+ if (codePoint >= 0x11176 && codePoint <= 0x11176)
+ return true;
+ if (codePoint >= 0x11183 && codePoint <= 0x111b2)
+ return true;
+ if (codePoint >= 0x111c1 && codePoint <= 0x111c4)
+ return true;
+ if (codePoint >= 0x111da && codePoint <= 0x111da)
+ return true;
+ if (codePoint >= 0x111dc && codePoint <= 0x111dc)
+ return true;
+ if (codePoint >= 0x11200 && codePoint <= 0x11211)
+ return true;
+ if (codePoint >= 0x11213 && codePoint <= 0x1122b)
+ return true;
+ if (codePoint >= 0x11280 && codePoint <= 0x11286)
+ return true;
+ if (codePoint >= 0x11288 && codePoint <= 0x11288)
+ return true;
+ if (codePoint >= 0x1128a && codePoint <= 0x1128d)
+ return true;
+ if (codePoint >= 0x1128f && codePoint <= 0x1129d)
+ return true;
+ if (codePoint >= 0x1129f && codePoint <= 0x112a8)
+ return true;
+ if (codePoint >= 0x112b0 && codePoint <= 0x112de)
+ return true;
+ if (codePoint >= 0x11305 && codePoint <= 0x1130c)
+ return true;
+ if (codePoint >= 0x1130f && codePoint <= 0x11310)
+ return true;
+ if (codePoint >= 0x11313 && codePoint <= 0x11328)
+ return true;
+ if (codePoint >= 0x1132a && codePoint <= 0x11330)
+ return true;
+ if (codePoint >= 0x11332 && codePoint <= 0x11333)
+ return true;
+ if (codePoint >= 0x11335 && codePoint <= 0x11339)
+ return true;
+ if (codePoint >= 0x1133d && codePoint <= 0x1133d)
+ return true;
+ if (codePoint >= 0x11350 && codePoint <= 0x11350)
+ return true;
+ if (codePoint >= 0x1135d && codePoint <= 0x11361)
+ return true;
+ if (codePoint >= 0x11400 && codePoint <= 0x11434)
+ return true;
+ if (codePoint >= 0x11447 && codePoint <= 0x1144a)
+ return true;
+ if (codePoint >= 0x11480 && codePoint <= 0x114af)
+ return true;
+ if (codePoint >= 0x114c4 && codePoint <= 0x114c5)
+ return true;
+ if (codePoint >= 0x114c7 && codePoint <= 0x114c7)
+ return true;
+ if (codePoint >= 0x11580 && codePoint <= 0x115ae)
+ return true;
+ if (codePoint >= 0x115d8 && codePoint <= 0x115db)
+ return true;
+ if (codePoint >= 0x11600 && codePoint <= 0x1162f)
+ return true;
+ if (codePoint >= 0x11644 && codePoint <= 0x11644)
+ return true;
+ if (codePoint >= 0x11680 && codePoint <= 0x116aa)
+ return true;
+ if (codePoint >= 0x11700 && codePoint <= 0x11719)
+ return true;
+ if (codePoint >= 0x118a0 && codePoint <= 0x118df)
+ return true;
+ if (codePoint >= 0x118ff && codePoint <= 0x118ff)
+ return true;
+ if (codePoint >= 0x11ac0 && codePoint <= 0x11af8)
+ return true;
+ if (codePoint >= 0x11c00 && codePoint <= 0x11c08)
+ return true;
+ if (codePoint >= 0x11c0a && codePoint <= 0x11c2e)
+ return true;
+ if (codePoint >= 0x11c40 && codePoint <= 0x11c40)
+ return true;
+ if (codePoint >= 0x11c72 && codePoint <= 0x11c8f)
+ return true;
+ if (codePoint >= 0x12000 && codePoint <= 0x12399)
+ return true;
+ if (codePoint >= 0x12400 && codePoint <= 0x1246e)
+ return true;
+ if (codePoint >= 0x12480 && codePoint <= 0x12543)
+ return true;
+ if (codePoint >= 0x13000 && codePoint <= 0x1342e)
+ return true;
+ if (codePoint >= 0x14400 && codePoint <= 0x14646)
+ return true;
+ if (codePoint >= 0x16800 && codePoint <= 0x16a38)
+ return true;
+ if (codePoint >= 0x16a40 && codePoint <= 0x16a5e)
+ return true;
+ if (codePoint >= 0x16ad0 && codePoint <= 0x16aed)
+ return true;
+ if (codePoint >= 0x16b00 && codePoint <= 0x16b2f)
+ return true;
+ if (codePoint >= 0x16b40 && codePoint <= 0x16b43)
+ return true;
+ if (codePoint >= 0x16b63 && codePoint <= 0x16b77)
+ return true;
+ if (codePoint >= 0x16b7d && codePoint <= 0x16b8f)
+ return true;
+ if (codePoint >= 0x16f00 && codePoint <= 0x16f44)
+ return true;
+ if (codePoint >= 0x16f50 && codePoint <= 0x16f50)
+ return true;
+ if (codePoint >= 0x16f93 && codePoint <= 0x16f9f)
+ return true;
+ if (codePoint >= 0x16fe0 && codePoint <= 0x16fe0)
+ return true;
+ if (codePoint >= 0x17000 && codePoint <= 0x187ec)
+ return true;
+ if (codePoint >= 0x18800 && codePoint <= 0x18af2)
+ return true;
+ if (codePoint >= 0x1b000 && codePoint <= 0x1b001)
+ return true;
+ if (codePoint >= 0x1bc00 && codePoint <= 0x1bc6a)
+ return true;
+ if (codePoint >= 0x1bc70 && codePoint <= 0x1bc7c)
+ return true;
+ if (codePoint >= 0x1bc80 && codePoint <= 0x1bc88)
+ return true;
+ if (codePoint >= 0x1bc90 && codePoint <= 0x1bc99)
+ return true;
+ if (codePoint >= 0x1d400 && codePoint <= 0x1d454)
+ return true;
+ if (codePoint >= 0x1d456 && codePoint <= 0x1d49c)
+ return true;
+ if (codePoint >= 0x1d49e && codePoint <= 0x1d49f)
+ return true;
+ if (codePoint >= 0x1d4a2 && codePoint <= 0x1d4a2)
+ return true;
+ if (codePoint >= 0x1d4a5 && codePoint <= 0x1d4a6)
+ return true;
+ if (codePoint >= 0x1d4a9 && codePoint <= 0x1d4ac)
+ return true;
+ if (codePoint >= 0x1d4ae && codePoint <= 0x1d4b9)
+ return true;
+ if (codePoint >= 0x1d4bb && codePoint <= 0x1d4bb)
+ return true;
+ if (codePoint >= 0x1d4bd && codePoint <= 0x1d4c3)
+ return true;
+ if (codePoint >= 0x1d4c5 && codePoint <= 0x1d505)
+ return true;
+ if (codePoint >= 0x1d507 && codePoint <= 0x1d50a)
+ return true;
+ if (codePoint >= 0x1d50d && codePoint <= 0x1d514)
+ return true;
+ if (codePoint >= 0x1d516 && codePoint <= 0x1d51c)
+ return true;
+ if (codePoint >= 0x1d51e && codePoint <= 0x1d539)
+ return true;
+ if (codePoint >= 0x1d53b && codePoint <= 0x1d53e)
+ return true;
+ if (codePoint >= 0x1d540 && codePoint <= 0x1d544)
+ return true;
+ if (codePoint >= 0x1d546 && codePoint <= 0x1d546)
+ return true;
+ if (codePoint >= 0x1d54a && codePoint <= 0x1d550)
+ return true;
+ if (codePoint >= 0x1d552 && codePoint <= 0x1d6a5)
+ return true;
+ if (codePoint >= 0x1d6a8 && codePoint <= 0x1d6c0)
+ return true;
+ if (codePoint >= 0x1d6c2 && codePoint <= 0x1d6da)
+ return true;
+ if (codePoint >= 0x1d6dc && codePoint <= 0x1d6fa)
+ return true;
+ if (codePoint >= 0x1d6fc && codePoint <= 0x1d714)
+ return true;
+ if (codePoint >= 0x1d716 && codePoint <= 0x1d734)
+ return true;
+ if (codePoint >= 0x1d736 && codePoint <= 0x1d74e)
+ return true;
+ if (codePoint >= 0x1d750 && codePoint <= 0x1d76e)
+ return true;
+ if (codePoint >= 0x1d770 && codePoint <= 0x1d788)
+ return true;
+ if (codePoint >= 0x1d78a && codePoint <= 0x1d7a8)
+ return true;
+ if (codePoint >= 0x1d7aa && codePoint <= 0x1d7c2)
+ return true;
+ if (codePoint >= 0x1d7c4 && codePoint <= 0x1d7cb)
+ return true;
+ if (codePoint >= 0x1e800 && codePoint <= 0x1e8c4)
+ return true;
+ if (codePoint >= 0x1e900 && codePoint <= 0x1e943)
+ return true;
+ if (codePoint >= 0x1ee00 && codePoint <= 0x1ee03)
+ return true;
+ if (codePoint >= 0x1ee05 && codePoint <= 0x1ee1f)
+ return true;
+ if (codePoint >= 0x1ee21 && codePoint <= 0x1ee22)
+ return true;
+ if (codePoint >= 0x1ee24 && codePoint <= 0x1ee24)
+ return true;
+ if (codePoint >= 0x1ee27 && codePoint <= 0x1ee27)
+ return true;
+ if (codePoint >= 0x1ee29 && codePoint <= 0x1ee32)
+ return true;
+ if (codePoint >= 0x1ee34 && codePoint <= 0x1ee37)
+ return true;
+ if (codePoint >= 0x1ee39 && codePoint <= 0x1ee39)
+ return true;
+ if (codePoint >= 0x1ee3b && codePoint <= 0x1ee3b)
+ return true;
+ if (codePoint >= 0x1ee42 && codePoint <= 0x1ee42)
+ return true;
+ if (codePoint >= 0x1ee47 && codePoint <= 0x1ee47)
+ return true;
+ if (codePoint >= 0x1ee49 && codePoint <= 0x1ee49)
+ return true;
+ if (codePoint >= 0x1ee4b && codePoint <= 0x1ee4b)
+ return true;
+ if (codePoint >= 0x1ee4d && codePoint <= 0x1ee4f)
+ return true;
+ if (codePoint >= 0x1ee51 && codePoint <= 0x1ee52)
+ return true;
+ if (codePoint >= 0x1ee54 && codePoint <= 0x1ee54)
+ return true;
+ if (codePoint >= 0x1ee57 && codePoint <= 0x1ee57)
+ return true;
+ if (codePoint >= 0x1ee59 && codePoint <= 0x1ee59)
+ return true;
+ if (codePoint >= 0x1ee5b && codePoint <= 0x1ee5b)
+ return true;
+ if (codePoint >= 0x1ee5d && codePoint <= 0x1ee5d)
+ return true;
+ if (codePoint >= 0x1ee5f && codePoint <= 0x1ee5f)
+ return true;
+ if (codePoint >= 0x1ee61 && codePoint <= 0x1ee62)
+ return true;
+ if (codePoint >= 0x1ee64 && codePoint <= 0x1ee64)
+ return true;
+ if (codePoint >= 0x1ee67 && codePoint <= 0x1ee6a)
+ return true;
+ if (codePoint >= 0x1ee6c && codePoint <= 0x1ee72)
+ return true;
+ if (codePoint >= 0x1ee74 && codePoint <= 0x1ee77)
+ return true;
+ if (codePoint >= 0x1ee79 && codePoint <= 0x1ee7c)
+ return true;
+ if (codePoint >= 0x1ee7e && codePoint <= 0x1ee7e)
+ return true;
+ if (codePoint >= 0x1ee80 && codePoint <= 0x1ee89)
+ return true;
+ if (codePoint >= 0x1ee8b && codePoint <= 0x1ee9b)
+ return true;
+ if (codePoint >= 0x1eea1 && codePoint <= 0x1eea3)
+ return true;
+ if (codePoint >= 0x1eea5 && codePoint <= 0x1eea9)
+ return true;
+ if (codePoint >= 0x1eeab && codePoint <= 0x1eebb)
+ return true;
+ if (codePoint >= 0x20000 && codePoint <= 0x2a6d6)
+ return true;
+ if (codePoint >= 0x2a700 && codePoint <= 0x2b734)
+ return true;
+ if (codePoint >= 0x2b740 && codePoint <= 0x2b81d)
+ return true;
+ if (codePoint >= 0x2b820 && codePoint <= 0x2cea1)
+ return true;
+ if (codePoint >= 0x2f800 && codePoint <= 0x2fa1d)
+ return true;
+ return false;
+}
+
+bool
+js::unicode::IsIdentifierPartNonBMP(uint32_t codePoint)
+{
+ if (codePoint >= 0x10000 && codePoint <= 0x1000b)
+ return true;
+ if (codePoint >= 0x1000d && codePoint <= 0x10026)
+ return true;
+ if (codePoint >= 0x10028 && codePoint <= 0x1003a)
+ return true;
+ if (codePoint >= 0x1003c && codePoint <= 0x1003d)
+ return true;
+ if (codePoint >= 0x1003f && codePoint <= 0x1004d)
+ return true;
+ if (codePoint >= 0x10050 && codePoint <= 0x1005d)
+ return true;
+ if (codePoint >= 0x10080 && codePoint <= 0x100fa)
+ return true;
+ if (codePoint >= 0x10140 && codePoint <= 0x10174)
+ return true;
+ if (codePoint >= 0x101fd && codePoint <= 0x101fd)
+ return true;
+ if (codePoint >= 0x10280 && codePoint <= 0x1029c)
+ return true;
+ if (codePoint >= 0x102a0 && codePoint <= 0x102d0)
+ return true;
+ if (codePoint >= 0x102e0 && codePoint <= 0x102e0)
+ return true;
+ if (codePoint >= 0x10300 && codePoint <= 0x1031f)
+ return true;
+ if (codePoint >= 0x10330 && codePoint <= 0x1034a)
+ return true;
+ if (codePoint >= 0x10350 && codePoint <= 0x1037a)
+ return true;
+ if (codePoint >= 0x10380 && codePoint <= 0x1039d)
+ return true;
+ if (codePoint >= 0x103a0 && codePoint <= 0x103c3)
+ return true;
+ if (codePoint >= 0x103c8 && codePoint <= 0x103cf)
+ return true;
+ if (codePoint >= 0x103d1 && codePoint <= 0x103d5)
+ return true;
+ if (codePoint >= 0x10400 && codePoint <= 0x1049d)
+ return true;
+ if (codePoint >= 0x104a0 && codePoint <= 0x104a9)
+ return true;
+ if (codePoint >= 0x104b0 && codePoint <= 0x104d3)
+ return true;
+ if (codePoint >= 0x104d8 && codePoint <= 0x104fb)
+ return true;
+ if (codePoint >= 0x10500 && codePoint <= 0x10527)
+ return true;
+ if (codePoint >= 0x10530 && codePoint <= 0x10563)
+ return true;
+ if (codePoint >= 0x10600 && codePoint <= 0x10736)
+ return true;
+ if (codePoint >= 0x10740 && codePoint <= 0x10755)
+ return true;
+ if (codePoint >= 0x10760 && codePoint <= 0x10767)
+ return true;
+ if (codePoint >= 0x10800 && codePoint <= 0x10805)
+ return true;
+ if (codePoint >= 0x10808 && codePoint <= 0x10808)
+ return true;
+ if (codePoint >= 0x1080a && codePoint <= 0x10835)
+ return true;
+ if (codePoint >= 0x10837 && codePoint <= 0x10838)
+ return true;
+ if (codePoint >= 0x1083c && codePoint <= 0x1083c)
+ return true;
+ if (codePoint >= 0x1083f && codePoint <= 0x10855)
+ return true;
+ if (codePoint >= 0x10860 && codePoint <= 0x10876)
+ return true;
+ if (codePoint >= 0x10880 && codePoint <= 0x1089e)
+ return true;
+ if (codePoint >= 0x108e0 && codePoint <= 0x108f2)
+ return true;
+ if (codePoint >= 0x108f4 && codePoint <= 0x108f5)
+ return true;
+ if (codePoint >= 0x10900 && codePoint <= 0x10915)
+ return true;
+ if (codePoint >= 0x10920 && codePoint <= 0x10939)
+ return true;
+ if (codePoint >= 0x10980 && codePoint <= 0x109b7)
+ return true;
+ if (codePoint >= 0x109be && codePoint <= 0x109bf)
+ return true;
+ if (codePoint >= 0x10a00 && codePoint <= 0x10a03)
+ return true;
+ if (codePoint >= 0x10a05 && codePoint <= 0x10a06)
+ return true;
+ if (codePoint >= 0x10a0c && codePoint <= 0x10a13)
+ return true;
+ if (codePoint >= 0x10a15 && codePoint <= 0x10a17)
+ return true;
+ if (codePoint >= 0x10a19 && codePoint <= 0x10a33)
+ return true;
+ if (codePoint >= 0x10a38 && codePoint <= 0x10a3a)
+ return true;
+ if (codePoint >= 0x10a3f && codePoint <= 0x10a3f)
+ return true;
+ if (codePoint >= 0x10a60 && codePoint <= 0x10a7c)
+ return true;
+ if (codePoint >= 0x10a80 && codePoint <= 0x10a9c)
+ return true;
+ if (codePoint >= 0x10ac0 && codePoint <= 0x10ac7)
+ return true;
+ if (codePoint >= 0x10ac9 && codePoint <= 0x10ae6)
+ return true;
+ if (codePoint >= 0x10b00 && codePoint <= 0x10b35)
+ return true;
+ if (codePoint >= 0x10b40 && codePoint <= 0x10b55)
+ return true;
+ if (codePoint >= 0x10b60 && codePoint <= 0x10b72)
+ return true;
+ if (codePoint >= 0x10b80 && codePoint <= 0x10b91)
+ return true;
+ if (codePoint >= 0x10c00 && codePoint <= 0x10c48)
+ return true;
+ if (codePoint >= 0x10c80 && codePoint <= 0x10cb2)
+ return true;
+ if (codePoint >= 0x10cc0 && codePoint <= 0x10cf2)
+ return true;
+ if (codePoint >= 0x11000 && codePoint <= 0x11046)
+ return true;
+ if (codePoint >= 0x11066 && codePoint <= 0x1106f)
+ return true;
+ if (codePoint >= 0x1107f && codePoint <= 0x110ba)
+ return true;
+ if (codePoint >= 0x110d0 && codePoint <= 0x110e8)
+ return true;
+ if (codePoint >= 0x110f0 && codePoint <= 0x110f9)
+ return true;
+ if (codePoint >= 0x11100 && codePoint <= 0x11134)
+ return true;
+ if (codePoint >= 0x11136 && codePoint <= 0x1113f)
+ return true;
+ if (codePoint >= 0x11150 && codePoint <= 0x11173)
+ return true;
+ if (codePoint >= 0x11176 && codePoint <= 0x11176)
+ return true;
+ if (codePoint >= 0x11180 && codePoint <= 0x111c4)
+ return true;
+ if (codePoint >= 0x111ca && codePoint <= 0x111cc)
+ return true;
+ if (codePoint >= 0x111d0 && codePoint <= 0x111da)
+ return true;
+ if (codePoint >= 0x111dc && codePoint <= 0x111dc)
+ return true;
+ if (codePoint >= 0x11200 && codePoint <= 0x11211)
+ return true;
+ if (codePoint >= 0x11213 && codePoint <= 0x11237)
+ return true;
+ if (codePoint >= 0x1123e && codePoint <= 0x1123e)
+ return true;
+ if (codePoint >= 0x11280 && codePoint <= 0x11286)
+ return true;
+ if (codePoint >= 0x11288 && codePoint <= 0x11288)
+ return true;
+ if (codePoint >= 0x1128a && codePoint <= 0x1128d)
+ return true;
+ if (codePoint >= 0x1128f && codePoint <= 0x1129d)
+ return true;
+ if (codePoint >= 0x1129f && codePoint <= 0x112a8)
+ return true;
+ if (codePoint >= 0x112b0 && codePoint <= 0x112ea)
+ return true;
+ if (codePoint >= 0x112f0 && codePoint <= 0x112f9)
+ return true;
+ if (codePoint >= 0x11300 && codePoint <= 0x11303)
+ return true;
+ if (codePoint >= 0x11305 && codePoint <= 0x1130c)
+ return true;
+ if (codePoint >= 0x1130f && codePoint <= 0x11310)
+ return true;
+ if (codePoint >= 0x11313 && codePoint <= 0x11328)
+ return true;
+ if (codePoint >= 0x1132a && codePoint <= 0x11330)
+ return true;
+ if (codePoint >= 0x11332 && codePoint <= 0x11333)
+ return true;
+ if (codePoint >= 0x11335 && codePoint <= 0x11339)
+ return true;
+ if (codePoint >= 0x1133c && codePoint <= 0x11344)
+ return true;
+ if (codePoint >= 0x11347 && codePoint <= 0x11348)
+ return true;
+ if (codePoint >= 0x1134b && codePoint <= 0x1134d)
+ return true;
+ if (codePoint >= 0x11350 && codePoint <= 0x11350)
+ return true;
+ if (codePoint >= 0x11357 && codePoint <= 0x11357)
+ return true;
+ if (codePoint >= 0x1135d && codePoint <= 0x11363)
+ return true;
+ if (codePoint >= 0x11366 && codePoint <= 0x1136c)
+ return true;
+ if (codePoint >= 0x11370 && codePoint <= 0x11374)
+ return true;
+ if (codePoint >= 0x11400 && codePoint <= 0x1144a)
+ return true;
+ if (codePoint >= 0x11450 && codePoint <= 0x11459)
+ return true;
+ if (codePoint >= 0x11480 && codePoint <= 0x114c5)
+ return true;
+ if (codePoint >= 0x114c7 && codePoint <= 0x114c7)
+ return true;
+ if (codePoint >= 0x114d0 && codePoint <= 0x114d9)
+ return true;
+ if (codePoint >= 0x11580 && codePoint <= 0x115b5)
+ return true;
+ if (codePoint >= 0x115b8 && codePoint <= 0x115c0)
+ return true;
+ if (codePoint >= 0x115d8 && codePoint <= 0x115dd)
+ return true;
+ if (codePoint >= 0x11600 && codePoint <= 0x11640)
+ return true;
+ if (codePoint >= 0x11644 && codePoint <= 0x11644)
+ return true;
+ if (codePoint >= 0x11650 && codePoint <= 0x11659)
+ return true;
+ if (codePoint >= 0x11680 && codePoint <= 0x116b7)
+ return true;
+ if (codePoint >= 0x116c0 && codePoint <= 0x116c9)
+ return true;
+ if (codePoint >= 0x11700 && codePoint <= 0x11719)
+ return true;
+ if (codePoint >= 0x1171d && codePoint <= 0x1172b)
+ return true;
+ if (codePoint >= 0x11730 && codePoint <= 0x11739)
+ return true;
+ if (codePoint >= 0x118a0 && codePoint <= 0x118e9)
+ return true;
+ if (codePoint >= 0x118ff && codePoint <= 0x118ff)
+ return true;
+ if (codePoint >= 0x11ac0 && codePoint <= 0x11af8)
+ return true;
+ if (codePoint >= 0x11c00 && codePoint <= 0x11c08)
+ return true;
+ if (codePoint >= 0x11c0a && codePoint <= 0x11c36)
+ return true;
+ if (codePoint >= 0x11c38 && codePoint <= 0x11c40)
+ return true;
+ if (codePoint >= 0x11c50 && codePoint <= 0x11c59)
+ return true;
+ if (codePoint >= 0x11c72 && codePoint <= 0x11c8f)
+ return true;
+ if (codePoint >= 0x11c92 && codePoint <= 0x11ca7)
+ return true;
+ if (codePoint >= 0x11ca9 && codePoint <= 0x11cb6)
+ return true;
+ if (codePoint >= 0x12000 && codePoint <= 0x12399)
+ return true;
+ if (codePoint >= 0x12400 && codePoint <= 0x1246e)
+ return true;
+ if (codePoint >= 0x12480 && codePoint <= 0x12543)
+ return true;
+ if (codePoint >= 0x13000 && codePoint <= 0x1342e)
+ return true;
+ if (codePoint >= 0x14400 && codePoint <= 0x14646)
+ return true;
+ if (codePoint >= 0x16800 && codePoint <= 0x16a38)
+ return true;
+ if (codePoint >= 0x16a40 && codePoint <= 0x16a5e)
+ return true;
+ if (codePoint >= 0x16a60 && codePoint <= 0x16a69)
+ return true;
+ if (codePoint >= 0x16ad0 && codePoint <= 0x16aed)
+ return true;
+ if (codePoint >= 0x16af0 && codePoint <= 0x16af4)
+ return true;
+ if (codePoint >= 0x16b00 && codePoint <= 0x16b36)
+ return true;
+ if (codePoint >= 0x16b40 && codePoint <= 0x16b43)
+ return true;
+ if (codePoint >= 0x16b50 && codePoint <= 0x16b59)
+ return true;
+ if (codePoint >= 0x16b63 && codePoint <= 0x16b77)
+ return true;
+ if (codePoint >= 0x16b7d && codePoint <= 0x16b8f)
+ return true;
+ if (codePoint >= 0x16f00 && codePoint <= 0x16f44)
+ return true;
+ if (codePoint >= 0x16f50 && codePoint <= 0x16f7e)
+ return true;
+ if (codePoint >= 0x16f8f && codePoint <= 0x16f9f)
+ return true;
+ if (codePoint >= 0x16fe0 && codePoint <= 0x16fe0)
+ return true;
+ if (codePoint >= 0x17000 && codePoint <= 0x187ec)
+ return true;
+ if (codePoint >= 0x18800 && codePoint <= 0x18af2)
+ return true;
+ if (codePoint >= 0x1b000 && codePoint <= 0x1b001)
+ return true;
+ if (codePoint >= 0x1bc00 && codePoint <= 0x1bc6a)
+ return true;
+ if (codePoint >= 0x1bc70 && codePoint <= 0x1bc7c)
+ return true;
+ if (codePoint >= 0x1bc80 && codePoint <= 0x1bc88)
+ return true;
+ if (codePoint >= 0x1bc90 && codePoint <= 0x1bc99)
+ return true;
+ if (codePoint >= 0x1bc9d && codePoint <= 0x1bc9e)
+ return true;
+ if (codePoint >= 0x1d165 && codePoint <= 0x1d169)
+ return true;
+ if (codePoint >= 0x1d16d && codePoint <= 0x1d172)
+ return true;
+ if (codePoint >= 0x1d17b && codePoint <= 0x1d182)
+ return true;
+ if (codePoint >= 0x1d185 && codePoint <= 0x1d18b)
+ return true;
+ if (codePoint >= 0x1d1aa && codePoint <= 0x1d1ad)
+ return true;
+ if (codePoint >= 0x1d242 && codePoint <= 0x1d244)
+ return true;
+ if (codePoint >= 0x1d400 && codePoint <= 0x1d454)
+ return true;
+ if (codePoint >= 0x1d456 && codePoint <= 0x1d49c)
+ return true;
+ if (codePoint >= 0x1d49e && codePoint <= 0x1d49f)
+ return true;
+ if (codePoint >= 0x1d4a2 && codePoint <= 0x1d4a2)
+ return true;
+ if (codePoint >= 0x1d4a5 && codePoint <= 0x1d4a6)
+ return true;
+ if (codePoint >= 0x1d4a9 && codePoint <= 0x1d4ac)
+ return true;
+ if (codePoint >= 0x1d4ae && codePoint <= 0x1d4b9)
+ return true;
+ if (codePoint >= 0x1d4bb && codePoint <= 0x1d4bb)
+ return true;
+ if (codePoint >= 0x1d4bd && codePoint <= 0x1d4c3)
+ return true;
+ if (codePoint >= 0x1d4c5 && codePoint <= 0x1d505)
+ return true;
+ if (codePoint >= 0x1d507 && codePoint <= 0x1d50a)
+ return true;
+ if (codePoint >= 0x1d50d && codePoint <= 0x1d514)
+ return true;
+ if (codePoint >= 0x1d516 && codePoint <= 0x1d51c)
+ return true;
+ if (codePoint >= 0x1d51e && codePoint <= 0x1d539)
+ return true;
+ if (codePoint >= 0x1d53b && codePoint <= 0x1d53e)
+ return true;
+ if (codePoint >= 0x1d540 && codePoint <= 0x1d544)
+ return true;
+ if (codePoint >= 0x1d546 && codePoint <= 0x1d546)
+ return true;
+ if (codePoint >= 0x1d54a && codePoint <= 0x1d550)
+ return true;
+ if (codePoint >= 0x1d552 && codePoint <= 0x1d6a5)
+ return true;
+ if (codePoint >= 0x1d6a8 && codePoint <= 0x1d6c0)
+ return true;
+ if (codePoint >= 0x1d6c2 && codePoint <= 0x1d6da)
+ return true;
+ if (codePoint >= 0x1d6dc && codePoint <= 0x1d6fa)
+ return true;
+ if (codePoint >= 0x1d6fc && codePoint <= 0x1d714)
+ return true;
+ if (codePoint >= 0x1d716 && codePoint <= 0x1d734)
+ return true;
+ if (codePoint >= 0x1d736 && codePoint <= 0x1d74e)
+ return true;
+ if (codePoint >= 0x1d750 && codePoint <= 0x1d76e)
+ return true;
+ if (codePoint >= 0x1d770 && codePoint <= 0x1d788)
+ return true;
+ if (codePoint >= 0x1d78a && codePoint <= 0x1d7a8)
+ return true;
+ if (codePoint >= 0x1d7aa && codePoint <= 0x1d7c2)
+ return true;
+ if (codePoint >= 0x1d7c4 && codePoint <= 0x1d7cb)
+ return true;
+ if (codePoint >= 0x1d7ce && codePoint <= 0x1d7ff)
+ return true;
+ if (codePoint >= 0x1da00 && codePoint <= 0x1da36)
+ return true;
+ if (codePoint >= 0x1da3b && codePoint <= 0x1da6c)
+ return true;
+ if (codePoint >= 0x1da75 && codePoint <= 0x1da75)
+ return true;
+ if (codePoint >= 0x1da84 && codePoint <= 0x1da84)
+ return true;
+ if (codePoint >= 0x1da9b && codePoint <= 0x1da9f)
+ return true;
+ if (codePoint >= 0x1daa1 && codePoint <= 0x1daaf)
+ return true;
+ if (codePoint >= 0x1e000 && codePoint <= 0x1e006)
+ return true;
+ if (codePoint >= 0x1e008 && codePoint <= 0x1e018)
+ return true;
+ if (codePoint >= 0x1e01b && codePoint <= 0x1e021)
+ return true;
+ if (codePoint >= 0x1e023 && codePoint <= 0x1e024)
+ return true;
+ if (codePoint >= 0x1e026 && codePoint <= 0x1e02a)
+ return true;
+ if (codePoint >= 0x1e800 && codePoint <= 0x1e8c4)
+ return true;
+ if (codePoint >= 0x1e8d0 && codePoint <= 0x1e8d6)
+ return true;
+ if (codePoint >= 0x1e900 && codePoint <= 0x1e94a)
+ return true;
+ if (codePoint >= 0x1e950 && codePoint <= 0x1e959)
+ return true;
+ if (codePoint >= 0x1ee00 && codePoint <= 0x1ee03)
+ return true;
+ if (codePoint >= 0x1ee05 && codePoint <= 0x1ee1f)
+ return true;
+ if (codePoint >= 0x1ee21 && codePoint <= 0x1ee22)
+ return true;
+ if (codePoint >= 0x1ee24 && codePoint <= 0x1ee24)
+ return true;
+ if (codePoint >= 0x1ee27 && codePoint <= 0x1ee27)
+ return true;
+ if (codePoint >= 0x1ee29 && codePoint <= 0x1ee32)
+ return true;
+ if (codePoint >= 0x1ee34 && codePoint <= 0x1ee37)
+ return true;
+ if (codePoint >= 0x1ee39 && codePoint <= 0x1ee39)
+ return true;
+ if (codePoint >= 0x1ee3b && codePoint <= 0x1ee3b)
+ return true;
+ if (codePoint >= 0x1ee42 && codePoint <= 0x1ee42)
+ return true;
+ if (codePoint >= 0x1ee47 && codePoint <= 0x1ee47)
+ return true;
+ if (codePoint >= 0x1ee49 && codePoint <= 0x1ee49)
+ return true;
+ if (codePoint >= 0x1ee4b && codePoint <= 0x1ee4b)
+ return true;
+ if (codePoint >= 0x1ee4d && codePoint <= 0x1ee4f)
+ return true;
+ if (codePoint >= 0x1ee51 && codePoint <= 0x1ee52)
+ return true;
+ if (codePoint >= 0x1ee54 && codePoint <= 0x1ee54)
+ return true;
+ if (codePoint >= 0x1ee57 && codePoint <= 0x1ee57)
+ return true;
+ if (codePoint >= 0x1ee59 && codePoint <= 0x1ee59)
+ return true;
+ if (codePoint >= 0x1ee5b && codePoint <= 0x1ee5b)
+ return true;
+ if (codePoint >= 0x1ee5d && codePoint <= 0x1ee5d)
+ return true;
+ if (codePoint >= 0x1ee5f && codePoint <= 0x1ee5f)
+ return true;
+ if (codePoint >= 0x1ee61 && codePoint <= 0x1ee62)
+ return true;
+ if (codePoint >= 0x1ee64 && codePoint <= 0x1ee64)
+ return true;
+ if (codePoint >= 0x1ee67 && codePoint <= 0x1ee6a)
+ return true;
+ if (codePoint >= 0x1ee6c && codePoint <= 0x1ee72)
+ return true;
+ if (codePoint >= 0x1ee74 && codePoint <= 0x1ee77)
+ return true;
+ if (codePoint >= 0x1ee79 && codePoint <= 0x1ee7c)
+ return true;
+ if (codePoint >= 0x1ee7e && codePoint <= 0x1ee7e)
+ return true;
+ if (codePoint >= 0x1ee80 && codePoint <= 0x1ee89)
+ return true;
+ if (codePoint >= 0x1ee8b && codePoint <= 0x1ee9b)
+ return true;
+ if (codePoint >= 0x1eea1 && codePoint <= 0x1eea3)
+ return true;
+ if (codePoint >= 0x1eea5 && codePoint <= 0x1eea9)
+ return true;
+ if (codePoint >= 0x1eeab && codePoint <= 0x1eebb)
+ return true;
+ if (codePoint >= 0x20000 && codePoint <= 0x2a6d6)
+ return true;
+ if (codePoint >= 0x2a700 && codePoint <= 0x2b734)
+ return true;
+ if (codePoint >= 0x2b740 && codePoint <= 0x2b81d)
+ return true;
+ if (codePoint >= 0x2b820 && codePoint <= 0x2cea1)
+ return true;
+ if (codePoint >= 0x2f800 && codePoint <= 0x2fa1d)
+ return true;
+ if (codePoint >= 0xe0100 && codePoint <= 0xe01ef)
+ return true;
+ return false;
+}
diff --git a/js/src/vm/Unicode.h b/js/src/vm/Unicode.h
index 8b538d06d..bdac848fb 100644
--- a/js/src/vm/Unicode.h
+++ b/js/src/vm/Unicode.h
@@ -143,11 +143,15 @@ IsIdentifierStart(char16_t ch)
return CharInfo(ch).isUnicodeIDStart();
}
+bool
+IsIdentifierStartNonBMP(uint32_t codePoint);
+
inline bool
IsIdentifierStart(uint32_t codePoint)
{
- // TODO: Supplemental code points not yet supported (bug 1197230).
- return codePoint <= UTF16Max && IsIdentifierStart(char16_t(codePoint));
+ if (MOZ_UNLIKELY(codePoint > UTF16Max))
+ return IsIdentifierStartNonBMP(codePoint);
+ return IsIdentifierStart(char16_t(codePoint));
}
inline bool
@@ -170,11 +174,16 @@ IsIdentifierPart(char16_t ch)
return CharInfo(ch).isUnicodeIDContinue();
}
+
+bool
+IsIdentifierPartNonBMP(uint32_t codePoint);
+
inline bool
IsIdentifierPart(uint32_t codePoint)
{
- // TODO: Supplemental code points not yet supported (bug 1197230).
- return codePoint <= UTF16Max && IsIdentifierPart(char16_t(codePoint));
+ if (MOZ_UNLIKELY(codePoint > UTF16Max))
+ return IsIdentifierPartNonBMP(codePoint);
+ return IsIdentifierPart(char16_t(codePoint));
}
inline bool
@@ -183,6 +192,17 @@ IsUnicodeIDStart(char16_t ch)
return CharInfo(ch).isUnicodeIDStart();
}
+bool
+IsUnicodeIDStartNonBMP(uint32_t codePoint);
+
+inline bool
+IsUnicodeIDStart(uint32_t codePoint)
+{
+ if (MOZ_UNLIKELY(codePoint > UTF16Max))
+ return IsIdentifierStartNonBMP(codePoint);
+ return IsUnicodeIDStart(char16_t(codePoint));
+}
+
inline bool
IsSpace(char16_t ch)
{
diff --git a/js/src/vm/UnicodeNonBMP.h b/js/src/vm/UnicodeNonBMP.h
index 6cc64cde4..f99e227cd 100644
--- a/js/src/vm/UnicodeNonBMP.h
+++ b/js/src/vm/UnicodeNonBMP.h
@@ -10,6 +10,16 @@
#ifndef vm_UnicodeNonBMP_h
#define vm_UnicodeNonBMP_h
+// |macro| receives the following arguments
+// macro(FROM, TO, LEAD, TRAIL_FROM, TRAIL_TO, DIFF)
+// FROM: code point where the range starts
+// TO: code point where the range ends
+// LEAD: common lead surrogate of FROM and TO
+// TRAIL_FROM: trail surrogate of FROM
+// TRAIL_FROM: trail surrogate of TO
+// DIFF: the difference between the code point in the range and
+// converted code point
+
#define FOR_EACH_NON_BMP_LOWERCASE(macro) \
macro(0x10400, 0x10427, 0xd801, 0xdc00, 0xdc27, 40) \
macro(0x104b0, 0x104d3, 0xd801, 0xdcb0, 0xdcd3, 40) \
diff --git a/js/src/vm/make_unicode.py b/js/src/vm/make_unicode.py
index 5565d7d14..83f0d004b 100755
--- a/js/src/vm/make_unicode.py
+++ b/js/src/vm/make_unicode.py
@@ -133,6 +133,17 @@ def read_derived_core_properties(derived_core_properties):
for char in range(int(start, 16), int(end, 16) + 1):
yield (char, char_property)
+def int_ranges(ints):
+ """ Yields consecutive ranges (inclusive) from integer values. """
+ from itertools import tee, izip_longest
+
+ (a, b) = tee(sorted(ints))
+ start = next(b)
+ for (curr, succ) in izip_longest(a, b):
+ if curr + 1 != succ:
+ yield (start, curr)
+ start = succ
+
def utf16_encode(code):
NonBMPMin = 0x10000
LeadSurrogateMin = 0xD800
@@ -144,37 +155,65 @@ def utf16_encode(code):
return lead, trail
def make_non_bmp_convert_macro(out_file, name, convert_map):
+ # Find continuous range in convert_map.
convert_list = []
entry = None
for code in sorted(convert_map.keys()):
+ lead, trail = utf16_encode(code)
converted = convert_map[code]
diff = converted - code
- if entry and code == entry['code'] + entry['length'] and diff == entry['diff']:
+ if (entry and code == entry['code'] + entry['length'] and
+ diff == entry['diff'] and lead == entry['lead']):
+
entry['length'] += 1
continue
- entry = { 'code': code, 'diff': diff, 'length': 1 }
+ entry = {
+ 'code': code,
+ 'diff': diff,
+ 'length': 1,
+ 'lead': lead,
+ 'trail': trail,
+ }
convert_list.append(entry)
+ # Generate macro call for each range.
lines = []
for entry in convert_list:
from_code = entry['code']
to_code = entry['code'] + entry['length'] - 1
diff = entry['diff']
- from_lead, from_trail = utf16_encode(from_code)
- to_lead, to_trail = utf16_encode(to_code)
-
- assert from_lead == to_lead
+ lead = entry['lead']
+ from_trail = entry['trail']
+ to_trail = entry['trail'] + entry['length'] - 1
lines.append(' macro(0x{:x}, 0x{:x}, 0x{:x}, 0x{:x}, 0x{:x}, {:d})'.format(
- from_code, to_code, from_lead, from_trail, to_trail, diff))
+ from_code, to_code, lead, from_trail, to_trail, diff))
out_file.write('#define FOR_EACH_NON_BMP_{}(macro) \\\n'.format(name))
out_file.write(' \\\n'.join(lines))
out_file.write('\n')
+def for_each_non_bmp_group(group_set):
+ # Find continuous range in group_set.
+ group_list = []
+ entry = None
+ for code in sorted(group_set.keys()):
+ if entry and code == entry['code'] + entry['length']:
+ entry['length'] += 1
+ continue
+
+ entry = {
+ 'code': code,
+ 'length': 1
+ }
+ group_list.append(entry)
+
+ for entry in group_list:
+ yield (entry['code'], entry['code'] + entry['length'] - 1)
+
def process_derived_core_properties(derived_core_properties):
id_start = set()
id_continue = set()
@@ -203,6 +242,9 @@ def process_unicode_data(unicode_data, derived_core_properties):
non_bmp_lower_map = {}
non_bmp_upper_map = {}
+ non_bmp_id_start_set = {}
+ non_bmp_id_cont_set = {}
+ non_bmp_space_set = {}
(id_start, id_continue) = process_derived_core_properties(derived_core_properties)
@@ -235,6 +277,13 @@ def process_unicode_data(unicode_data, derived_core_properties):
non_bmp_lower_map[code] = lower
if code != upper:
non_bmp_upper_map[code] = upper
+ if category == 'Zs':
+ non_bmp_space_set[code] = 1
+ test_space_table.append(code)
+ if code in id_start:
+ non_bmp_id_start_set[code] = 1
+ if code in id_continue:
+ non_bmp_id_cont_set[code] = 1
continue
# we combine whitespace and lineterminators because in pratice we don't need them separated
@@ -304,6 +353,8 @@ def process_unicode_data(unicode_data, derived_core_properties):
table, index,
same_upper_table, same_upper_index,
non_bmp_lower_map, non_bmp_upper_map,
+ non_bmp_space_set,
+ non_bmp_id_start_set, non_bmp_id_cont_set,
test_table, test_space_table,
)
@@ -401,6 +452,16 @@ def make_non_bmp_file(version,
#ifndef vm_UnicodeNonBMP_h
#define vm_UnicodeNonBMP_h
+// |macro| receives the following arguments
+// macro(FROM, TO, LEAD, TRAIL_FROM, TRAIL_TO, DIFF)
+// FROM: code point where the range starts
+// TO: code point where the range ends
+// LEAD: common lead surrogate of FROM and TO
+// TRAIL_FROM: trail surrogate of FROM
+// TRAIL_FROM: trail surrogate of TO
+// DIFF: the difference between the code point in the range and
+// converted code point
+
""")
make_non_bmp_convert_macro(non_bmp_file, 'LOWERCASE', non_bmp_lower_map)
@@ -514,7 +575,9 @@ if (typeof reportCompare === "function")
def make_unicode_file(version,
table, index,
same_upper_table, same_upper_index,
- folding_table, folding_index):
+ folding_table, folding_index,
+ non_bmp_space_set,
+ non_bmp_id_start_set, non_bmp_id_cont_set):
index1, index2, shift = splitbins(index)
# Don't forget to update CharInfo in Unicode.h if you need to change this
@@ -671,6 +734,43 @@ def make_unicode_file(version,
dump(folding_index2, 'folding_index2', data_file)
data_file.write('\n')
+ # If the following assert fails, it means space character is added to
+ # non-BMP area. In that case the following code should be uncommented
+ # and the corresponding code should be added to frontend.
+ assert len(non_bmp_space_set.keys()) == 0
+
+ data_file.write("""\
+bool
+js::unicode::IsIdentifierStartNonBMP(uint32_t codePoint)
+{
+""")
+
+ for (from_code, to_code) in for_each_non_bmp_group(non_bmp_id_start_set):
+ data_file.write("""\
+ if (codePoint >= 0x{:x} && codePoint <= 0x{:x})
+ return true;
+""".format(from_code, to_code))
+
+ data_file.write("""\
+ return false;
+}
+
+bool
+js::unicode::IsIdentifierPartNonBMP(uint32_t codePoint)
+{
+""")
+
+ for (from_code, to_code) in for_each_non_bmp_group(non_bmp_id_cont_set):
+ data_file.write("""\
+ if (codePoint >= 0x{:x} && codePoint <= 0x{:x})
+ return true;
+""".format(from_code, to_code))
+
+ data_file.write("""\
+ return false;
+}
+""")
+
def getsize(data):
""" return smallest possible integer size for the given array """
maxdata = max(data)
@@ -740,6 +840,204 @@ def splitbins(t):
assert t[i] == t2[(t1[i >> shift] << shift) + (i & mask)]
return best
+def make_irregexp_tables(version,
+ table, index,
+ folding_table, folding_index,
+ test_table):
+ import string
+ from functools import partial
+ from itertools import chain, ifilter, imap
+
+ MAX_ASCII = 0x7F
+ MAX_LATIN1 = 0xFF
+ LEAD_SURROGATE_MIN = 0xD800
+ TRAIL_SURROGATE_MAX = 0xDFFF
+
+ def hex2(n):
+ assert 0 <= n and n < 16**2
+ return '0x{:02X}'.format(n)
+
+ def hex4(n):
+ assert 0 <= n and n < 16**4
+ return '0x{:04X}'.format(n)
+
+ def uhex4(n):
+ assert 0 <= n and n < 16**4
+ return 'U+{:04X}'.format(n)
+
+ def case_info(code):
+ assert 0 <= code and code <= MAX_BMP
+ (upper, lower, flags) = table[index[code]]
+ return ((code + upper) & 0xffff, (code + lower) & 0xffff, flags)
+
+ def is_space(code):
+ (_, _, flags) = case_info(code)
+ return bool(flags & FLAG_SPACE)
+
+ def to_upper(code):
+ (upper, _, _) = case_info(code)
+ return upper
+
+ def casefold(code):
+ assert 0 <= code and code <= MAX_BMP
+ (folding, _, _, _) = folding_table[folding_index[code]]
+ return (code + folding) & 0xffff
+
+ def casefolds_to_ascii(code):
+ return casefold(code) <= MAX_ASCII
+
+ def casefolds_to_latin1(code):
+ return casefold(code) <= MAX_LATIN1
+
+ def casemaps_to_nonlatin1(code):
+ upper = to_upper(code)
+ return upper > MAX_LATIN1
+
+ def char_name(code):
+ assert 0 <= code and code <= MAX_BMP
+ if code not in test_table:
+ return '<Unused>'
+ if code == LEAD_SURROGATE_MIN:
+ return '<Lead Surrogate Min>'
+ if code == TRAIL_SURROGATE_MAX:
+ return '<Trail Surrogate Max>'
+ (_, _, name, alias) = test_table[code]
+ return name if not name.startswith('<') else alias
+
+ def write_character_range(println, name, characters):
+ char_ranges = list(int_ranges(characters))
+ println('')
+ println('const int js::irregexp::k{}Ranges[] = {{'.format(name))
+ for (start, end) in char_ranges:
+ s_name = char_name(start)
+ e_name = char_name(end)
+ println(' {}, {} + 1, // {}'.format(hex4(start), hex4(end),
+ '{}..{}'.format(s_name, e_name)
+ if start != end else s_name))
+ println(' {} + 1'.format(hex4(MAX_BMP)))
+ println('};')
+ println('const int js::irregexp::k{}RangeCount = {};'.format(name,
+ len(char_ranges) * 2 + 1))
+
+ def write_character_test(println, test, consequent, default):
+ # Latin1 characters which, when case-mapped through
+ # String.prototype.toUpperCase(), canonicalize to a non-Latin1 character.
+ # ES2017, §21.2.2.8.2 Runtime Semantics: Canonicalize
+ casemapped_to_nonlatin1 = ifilter(casemaps_to_nonlatin1, xrange(0, MAX_LATIN1 + 1))
+
+ def casemap_closure(ch):
+ upper = to_upper(ch)
+ return (ch, [c for c in xrange(MAX_LATIN1 + 1, MAX_BMP + 1) if upper == to_upper(c)])
+
+ # Mapping from Latin1 characters to the list of case map equivalent
+ # non-Latin1 characters.
+ casemap_for_latin1 = dict(chain(imap(casemap_closure, casemapped_to_nonlatin1)))
+
+ # Non-latin1 characters which, when Unicode case-folded, canonicalize to
+ # a Latin1 character.
+ # ES2017, §21.2.2.8.2 Runtime Semantics: Canonicalize
+ casefolded_to_latin1 = ifilter(casefolds_to_latin1, xrange(MAX_LATIN1 + 1, MAX_BMP + 1))
+
+ println(' if (unicode) {')
+ for ch in casefolded_to_latin1:
+ casefolded = casefold(ch)
+ # Skip if also handled below for case mapping.
+ if casefolded in casemap_for_latin1 and ch in casemap_for_latin1[casefolded]:
+ continue
+ println(' // "{}" case folds to "{}".'.format(char_name(ch),
+ char_name(casefolded)))
+ println(' if ({})'.format(test(ch)))
+ println(' return {};'.format(consequent(casefolded)))
+ println(' }')
+ println('')
+ for (ch, casemapped_chars) in casemap_for_latin1.iteritems():
+ for casemapped in casemapped_chars:
+ println(' // "{}" case maps to "{}".'.format(char_name(casemapped),
+ char_name(ch)))
+ println(' if ({})'.format(' || '.join(imap(test, casemapped_chars))))
+ println(' return {};'.format(consequent(ch)))
+ println(' return {};'.format(default))
+
+ with io.open('../irregexp/RegExpCharacters-inl.h', 'wb') as chars_file:
+ write = partial(print, file=chars_file, sep='', end='')
+ println = partial(write, end='\n')
+
+ write(warning_message)
+ write(unicode_version_message.format(version))
+
+ println('#ifndef V8_JSREGEXPCHARACTERS_INL_H_')
+ println('#define V8_JSREGEXPCHARACTERS_INL_H_')
+ println('')
+ println('namespace js {')
+ println('')
+ println('namespace irregexp {')
+ println('')
+
+ println('static inline bool')
+ println('RangeContainsLatin1Equivalents(CharacterRange range, bool unicode)')
+ println('{')
+ write_character_test(println, lambda ch: 'range.Contains({})'.format(hex4(ch)),
+ lambda _: 'true', 'false')
+ println('}')
+
+ println('')
+ println('} } // namespace js::irregexp')
+ println('')
+ println('#endif // V8_JSREGEXPCHARACTERS_INL_H_')
+
+ with io.open('../irregexp/RegExpCharacters.cpp', 'wb') as chars_file:
+ write = partial(print, file=chars_file, sep='', end='')
+ println = partial(write, end='\n')
+ character_range = partial(write_character_range, println)
+
+ # Characters in \s, 21.2.2.12 CharacterClassEscape.
+ space_chars = filter(is_space, xrange(0, MAX_BMP + 1))
+
+ # Characters in \d, 21.2.2.12 CharacterClassEscape.
+ digit_chars = map(ord, string.digits)
+ assert all(ch <= MAX_ASCII for ch in digit_chars)
+
+ # Characters in \w, 21.2.2.12 CharacterClassEscape.
+ word_chars = map(ord, string.digits + string.ascii_letters + '_')
+ assert all(ch <= MAX_ASCII for ch in word_chars)
+
+ # Characters which case-fold to characters in \w.
+ ignorecase_word_chars = (word_chars +
+ filter(casefolds_to_ascii, xrange(MAX_ASCII + 1, MAX_BMP + 1)))
+
+ # Surrogate characters.
+ surrogate_chars = range(LEAD_SURROGATE_MIN, TRAIL_SURROGATE_MAX + 1)
+
+ write(warning_message)
+ write(unicode_version_message.format(version))
+ println('#include "irregexp/RegExpCharacters.h"')
+ println('')
+ println('#include "mozilla/Assertions.h"')
+ println('')
+
+ println('char16_t')
+ println('js::irregexp::ConvertNonLatin1ToLatin1(char16_t c, bool unicode)')
+ println('{')
+ println(' MOZ_ASSERT(c > {}, "Character mustn\'t be Latin1");'.format(hex2(MAX_LATIN1)))
+ write_character_test(println, lambda ch: 'c == {}'.format(hex4(ch)), hex2, '0')
+ println('}')
+
+ character_range('Space', space_chars)
+ character_range('SpaceAndSurrogate', space_chars + surrogate_chars)
+
+ character_range('Word', word_chars)
+ character_range('IgnoreCaseWord', ignorecase_word_chars)
+ character_range('WordAndSurrogate', word_chars + surrogate_chars)
+ character_range('NegatedIgnoreCaseWordAndSurrogate',
+ set(xrange(0, MAX_BMP + 1)) - set(ignorecase_word_chars + surrogate_chars))
+
+ character_range('Digit', digit_chars)
+ character_range('DigitAndSurrogate', digit_chars + surrogate_chars)
+
+ character_range('Surrogate', surrogate_chars)
+
+ character_range('LineTerminator', line_terminator)
+
def update_unicode(args):
import urllib2
@@ -791,6 +1089,8 @@ def update_unicode(args):
table, index,
same_upper_table, same_upper_index,
non_bmp_lower_map, non_bmp_upper_map,
+ non_bmp_space_set,
+ non_bmp_id_start_set, non_bmp_id_cont_set,
test_table, test_space_table
) = process_unicode_data(unicode_data, derived_core_properties)
(
@@ -803,10 +1103,16 @@ def update_unicode(args):
make_unicode_file(unicode_version,
table, index,
same_upper_table, same_upper_index,
- folding_table, folding_index)
+ folding_table, folding_index,
+ non_bmp_space_set,
+ non_bmp_id_start_set, non_bmp_id_cont_set)
make_non_bmp_file(unicode_version,
non_bmp_lower_map, non_bmp_upper_map,
non_bmp_folding_map, non_bmp_rev_folding_map)
+ make_irregexp_tables(unicode_version,
+ table, index,
+ folding_table, folding_index,
+ test_table)
make_bmp_mapping_test(unicode_version, test_table)
make_non_bmp_mapping_test(unicode_version, non_bmp_upper_map, non_bmp_lower_map)
diff --git a/js/src/wasm/AsmJS.cpp b/js/src/wasm/AsmJS.cpp
index 34f5a8c0d..b4f41c3d5 100644
--- a/js/src/wasm/AsmJS.cpp
+++ b/js/src/wasm/AsmJS.cpp
@@ -21,6 +21,7 @@
#include "mozilla/Attributes.h"
#include "mozilla/Compression.h"
#include "mozilla/MathAlgorithms.h"
+#include "mozilla/Maybe.h"
#include "jsmath.h"
#include "jsprf.h"
@@ -678,7 +679,7 @@ FunctionObject(ParseNode* fn)
static inline PropertyName*
FunctionName(ParseNode* fn)
{
- if (JSAtom* name = FunctionObject(fn)->name())
+ if (JSAtom* name = FunctionObject(fn)->explicitName())
return name->asPropertyName();
return nullptr;
}
@@ -3248,7 +3249,7 @@ static bool
CheckFunctionHead(ModuleValidator& m, ParseNode* fn)
{
JSFunction* fun = FunctionObject(fn);
- if (fun->hasRest())
+ if (fn->pn_funbox->hasRest())
return m.fail(fn, "rest args not allowed");
if (fun->isExprBody())
return m.fail(fn, "expression closures not allowed");
@@ -8033,25 +8034,10 @@ TryInstantiate(JSContext* cx, CallArgs args, Module& module, const AsmJSMetadata
return true;
}
-static MOZ_MUST_USE bool
-MaybeAppendUTF8Name(JSContext* cx, const char* utf8Chars, MutableHandle<PropertyNameVector> names)
-{
- if (!utf8Chars)
- return true;
-
- UTF8Chars utf8(utf8Chars, strlen(utf8Chars));
-
- JSAtom* atom = AtomizeUTF8Chars(cx, utf8Chars, strlen(utf8Chars));
- if (!atom)
- return false;
-
- return names.append(atom->asPropertyName());
-}
-
static bool
HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& metadata)
{
- RootedAtom name(cx, args.callee().as<JSFunction>().name());
+ RootedAtom name(cx, args.callee().as<JSFunction>().explicitName());
if (cx->isExceptionPending())
return false;
@@ -8068,8 +8054,8 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
return false;
}
- uint32_t begin = metadata.srcBodyStart; // starts right after 'use asm'
- uint32_t end = metadata.srcEndBeforeCurly();
+ uint32_t begin = metadata.srcStart;
+ uint32_t end = metadata.srcEndAfterCurly();
Rooted<JSFlatString*> src(cx, source->substringDontDeflate(cx, begin, end));
if (!src)
return false;
@@ -8080,18 +8066,11 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
if (!fun)
return false;
- Rooted<PropertyNameVector> formals(cx, PropertyNameVector(cx));
- if (!MaybeAppendUTF8Name(cx, metadata.globalArgumentName.get(), &formals))
- return false;
- if (!MaybeAppendUTF8Name(cx, metadata.importArgumentName.get(), &formals))
- return false;
- if (!MaybeAppendUTF8Name(cx, metadata.bufferArgumentName.get(), &formals))
- return false;
-
CompileOptions options(cx);
options.setMutedErrors(source->mutedErrors())
.setFile(source->filename())
.setNoScriptRval(false);
+ options.asmJSOption = AsmJSOption::Disabled;
// The exported function inherits an implicit strict context if the module
// also inherited it somehow.
@@ -8106,8 +8085,8 @@ HandleInstantiationFailure(JSContext* cx, CallArgs args, const AsmJSMetadata& me
SourceBufferHolder::Ownership ownership = stableChars.maybeGiveOwnershipToCaller()
? SourceBufferHolder::GiveOwnership
: SourceBufferHolder::NoOwnership;
- SourceBufferHolder srcBuf(chars, end - begin, ownership);
- if (!frontend::CompileFunctionBody(cx, &fun, options, formals, srcBuf))
+ SourceBufferHolder srcBuf(chars, stableChars.twoByteRange().length(), ownership);
+ if (!frontend::CompileStandaloneFunction(cx, &fun, options, srcBuf, Nothing()))
return false;
// Call the function we just recompiled.
@@ -8149,7 +8128,7 @@ InstantiateAsmJS(JSContext* cx, unsigned argc, JS::Value* vp)
static JSFunction*
NewAsmJSModuleFunction(ExclusiveContext* cx, JSFunction* origFun, HandleObject moduleObj)
{
- RootedAtom name(cx, origFun->name());
+ RootedAtom name(cx, origFun->explicitName());
JSFunction::Flags flags = origFun->isLambda() ? JSFunction::ASMJS_LAMBDA_CTOR
: JSFunction::ASMJS_CTOR;
@@ -8849,23 +8828,6 @@ js::IsAsmJSModuleLoadedFromCache(JSContext* cx, unsigned argc, Value* vp)
/*****************************************************************************/
// asm.js toString/toSource support
-static MOZ_MUST_USE bool
-MaybeAppendUTF8Chars(JSContext* cx, const char* sep, const char* utf8Chars, StringBuffer* sb)
-{
- if (!utf8Chars)
- return true;
-
- UTF8Chars utf8(utf8Chars, strlen(utf8Chars));
-
- size_t length;
- UniqueTwoByteChars twoByteChars(UTF8CharsToNewTwoByteCharsZ(cx, utf8, &length).get());
- if (!twoByteChars)
- return false;
-
- return sb->append(sep, strlen(sep)) &&
- sb->append(twoByteChars.get(), length);
-}
-
JSString*
js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda)
{
@@ -8884,7 +8846,7 @@ js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda
if (!out.append("function "))
return nullptr;
- if (fun->name() && !out.append(fun->name()))
+ if (fun->explicitName() && !out.append(fun->explicitName()))
return nullptr;
bool haveSource = source->hasSourceData();
@@ -8895,33 +8857,12 @@ js::AsmJSModuleToString(JSContext* cx, HandleFunction fun, bool addParenToLambda
if (!out.append("() {\n [sourceless code]\n}"))
return nullptr;
} else {
- // Whether the function has been created with a Function ctor
- bool funCtor = begin == 0 && end == source->length() && source->argumentsNotIncluded();
- if (funCtor) {
- // Functions created with the function constructor don't have arguments in their source.
- if (!out.append("("))
- return nullptr;
-
- if (!MaybeAppendUTF8Chars(cx, "", metadata.globalArgumentName.get(), &out))
- return nullptr;
- if (!MaybeAppendUTF8Chars(cx, ", ", metadata.importArgumentName.get(), &out))
- return nullptr;
- if (!MaybeAppendUTF8Chars(cx, ", ", metadata.bufferArgumentName.get(), &out))
- return nullptr;
-
- if (!out.append(") {\n"))
- return nullptr;
- }
-
Rooted<JSFlatString*> src(cx, source->substring(cx, begin, end));
if (!src)
return nullptr;
if (!out.append(src))
return nullptr;
-
- if (funCtor && !out.append("\n}"))
- return nullptr;
}
if (addParenToLambda && fun->isLambda() && !out.append(")"))
@@ -8953,16 +8894,12 @@ js::AsmJSFunctionToString(JSContext* cx, HandleFunction fun)
if (!haveSource) {
// asm.js functions can't be anonymous
- MOZ_ASSERT(fun->name());
- if (!out.append(fun->name()))
+ MOZ_ASSERT(fun->explicitName());
+ if (!out.append(fun->explicitName()))
return nullptr;
if (!out.append("() {\n [sourceless code]\n}"))
return nullptr;
} else {
- // asm.js functions cannot have been created with a Function constructor
- // as they belong within a module.
- MOZ_ASSERT(!(begin == 0 && end == source->length() && source->argumentsNotIncluded()));
-
Rooted<JSFlatString*> src(cx, source->substring(cx, begin, end));
if (!src)
return nullptr;