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-rw-r--r--js/src/vm/SelfHosting.cpp45
1 files changed, 33 insertions, 12 deletions
diff --git a/js/src/vm/SelfHosting.cpp b/js/src/vm/SelfHosting.cpp
index 653807ce8..08670c833 100644
--- a/js/src/vm/SelfHosting.cpp
+++ b/js/src/vm/SelfHosting.cpp
@@ -189,6 +189,22 @@ intrinsic_IsInstanceOfBuiltin(JSContext* cx, unsigned argc, Value* vp)
return true;
}
+template<typename T>
+static bool
+intrinsic_GuardToBuiltin(JSContext* cx, unsigned argc, Value* vp)
+{
+ CallArgs args = CallArgsFromVp(argc, vp);
+ MOZ_ASSERT(args.length() == 1);
+ MOZ_ASSERT(args[0].isObject());
+
+ if (args[0].toObject().is<T>()) {
+ args.rval().setObject(args[0].toObject());
+ return true;
+ }
+ args.rval().setNull();
+ return true;
+}
+
/**
* Self-hosting intrinsic returning the original constructor for a builtin
* the name of which is the first and only argument.
@@ -2297,18 +2313,18 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_FN("_SetCanonicalName", intrinsic_SetCanonicalName, 2,0),
- JS_INLINABLE_FN("IsArrayIterator",
- intrinsic_IsInstanceOfBuiltin<ArrayIteratorObject>, 1,0,
- IntrinsicIsArrayIterator),
- JS_INLINABLE_FN("IsMapIterator",
- intrinsic_IsInstanceOfBuiltin<MapIteratorObject>, 1,0,
- IntrinsicIsMapIterator),
- JS_INLINABLE_FN("IsSetIterator",
- intrinsic_IsInstanceOfBuiltin<SetIteratorObject>, 1,0,
- IntrinsicIsSetIterator),
- JS_INLINABLE_FN("IsStringIterator",
- intrinsic_IsInstanceOfBuiltin<StringIteratorObject>, 1,0,
- IntrinsicIsStringIterator),
+ JS_INLINABLE_FN("GuardToArrayIterator",
+ intrinsic_GuardToBuiltin<ArrayIteratorObject>, 1,0,
+ IntrinsicGuardToArrayIterator),
+ JS_INLINABLE_FN("GuardToMapIterator",
+ intrinsic_GuardToBuiltin<MapIteratorObject>, 1,0,
+ IntrinsicGuardToMapIterator),
+ JS_INLINABLE_FN("GuardToSetIterator",
+ intrinsic_GuardToBuiltin<SetIteratorObject>, 1,0,
+ IntrinsicGuardToSetIterator),
+ JS_INLINABLE_FN("GuardToStringIterator",
+ intrinsic_GuardToBuiltin<StringIteratorObject>, 1,0,
+ IntrinsicGuardToStringIterator),
JS_INLINABLE_FN("IsListIterator",
intrinsic_IsInstanceOfBuiltin<ListIteratorObject>, 1,0,
IntrinsicIsListIterator),
@@ -2412,7 +2428,12 @@ static const JSFunctionSpec intrinsic_functions[] = {
JS_FN("CallStarGeneratorMethodIfWrapped",
CallNonGenericSelfhostedMethod<Is<StarGeneratorObject>>, 2, 0),
+ JS_INLINABLE_FN("GuardToMapObject", intrinsic_GuardToBuiltin<MapObject>, 1, 0,
+ IntrinsicGuardToMapObject),
JS_FN("IsWeakSet", intrinsic_IsInstanceOfBuiltin<WeakSetObject>, 1,0),
+
+ JS_INLINABLE_FN("GuardToSetObject", intrinsic_GuardToBuiltin<SetObject>, 1, 0,
+ IntrinsicGuardToSetObject),
JS_FN("CallWeakSetMethodIfWrapped",
CallNonGenericSelfhostedMethod<Is<WeakSetObject>>, 2, 0),