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-rw-r--r--js/src/frontend/Parser.cpp100
1 files changed, 52 insertions, 48 deletions
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();
generated by cgit v1.2.3 (git 2.25.1) at 2024-07-10 07:23:16 +0000