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authorjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-03-19 15:18:37 +0100
committerjanekptacijarabaci <janekptacijarabaci@seznam.cz>2018-03-19 15:18:37 +0100
commit6822460d3b0d4609ee5d4e1ab4b093799ed06580 (patch)
tree9bc036539687d788ab61e2f5aabc6729a4e6a3d3 /js/src
parent213f9ea384c71eac84667d65a21dc96e422798db (diff)
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Bug 1317309: Throw a TypeError when passing a Symbol value to ToAtom
Issue #78 [Depends on] Bug 883377: Implement ES6 function "name" property semantics
Diffstat (limited to 'js/src')
-rw-r--r--js/src/jsatom.cpp8
-rw-r--r--js/src/jsfun.cpp12
-rw-r--r--js/src/tests/ecma_6/RegExp/compile-symbol.js14
-rw-r--r--js/src/tests/ecma_6/RegExp/constructor-symbol.js14
4 files changed, 45 insertions, 3 deletions
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/jsfun.cpp b/js/src/jsfun.cpp
index 2359e28a2..1d44f0ea0 100644
--- a/js/src/jsfun.cpp
+++ b/js/src/jsfun.cpp
@@ -2131,9 +2131,10 @@ 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 */)
@@ -2141,7 +2142,11 @@ js::IdToFunctionName(JSContext* cx, HandleId id, const char* prefix /* = nullptr
if (JSID_IS_ATOM(id) && !prefix)
return JSID_TO_ATOM(id);
- if (JSID_IS_SYMBOL(id) && !prefix) {
+ // Step 3.
+ MOZ_ASSERT_IF(prefix, !JSID_IS_SYMBOL(id));
+
+ // Step 4.
+ if (JSID_IS_SYMBOL(id)) {
RootedAtom desc(cx, JSID_TO_SYMBOL(id)->description());
StringBuffer sb(cx);
if (!sb.append('[') || !sb.append(desc) || !sb.append(']'))
@@ -2149,6 +2154,7 @@ js::IdToFunctionName(JSContext* cx, HandleId id, const char* prefix /* = nullptr
return sb.finishAtom();
}
+ // Step 5.
RootedValue idv(cx, IdToValue(id));
if (!prefix)
return ToAtom<CanGC>(cx, idv);
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);