bool
CreateThis(JSContext *cx, HandleObject callee, MutableHandleValue rval)
{
rval.set(MagicValue(JS_IS_CONSTRUCTING));
if (callee->isFunction()) {
JSFunction *fun = callee->toFunction();
if (fun->isInterpreted())
rval.set(ObjectValue(*js_CreateThisForFunction(cx, callee, false)));
}
return true;
}
bool
CreateThis(JSContext *cx, HandleObject callee, MutableHandleValue rval)
{
rval.set(MagicValue(JS_IS_CONSTRUCTING));
if (callee->isFunction()) {
JSFunction *fun = callee->toFunction();
if (fun->isInterpreted()) {
JSScript *script = fun->getOrCreateScript(cx);
if (!script || !script->ensureHasTypes(cx))
return false;
rval.set(ObjectValue(*CreateThisForFunction(cx, callee, false)));
}
}
return true;
}
static RawObject
CloneObject(JSContext *cx, HandleObject srcObj, CloneMemory &clonedObjects)
{
CloneMemory::AddPtr p = clonedObjects.lookupForAdd(srcObj.get());
if (p)
return p->value;
RootedObject clone(cx);
if (srcObj->isFunction()) {
RootedFunction fun(cx, srcObj->toFunction());
clone = CloneFunctionObject(cx, fun, cx->global(), fun->getAllocKind());
} else if (srcObj->isRegExp()) {
RegExpObject &reobj = srcObj->asRegExp();
RootedAtom source(cx, reobj.getSource());
clone = RegExpObject::createNoStatics(cx, source, reobj.getFlags(), NULL);
} else if (srcObj->isDate()) {
clone = JS_NewDateObjectMsec(cx, srcObj->getDateUTCTime().toNumber());
} else if (srcObj->isBoolean()) {
clone = BooleanObject::create(cx, srcObj->asBoolean().unbox());
} else if (srcObj->isNumber()) {
clone = NumberObject::create(cx, srcObj->asNumber().unbox());
} else if (srcObj->isString()) {
Rooted<JSStableString*> str(cx, srcObj->asString().unbox()->ensureStable(cx));
if (!str)
return NULL;
str = js_NewStringCopyN(cx, str->chars().get(), str->length())->ensureStable(cx);
if (!str)
return NULL;
clone = StringObject::create(cx, str);
} else if (srcObj->isDenseArray()) {
return CloneDenseArray(cx, srcObj, clonedObjects);
} else {
if (srcObj->isArray()) {
clone = NewDenseEmptyArray(cx);
} else {
JS_ASSERT(srcObj->isNative());
clone = NewObjectWithClassProto(cx, srcObj->getClass(), NULL, cx->global(),
srcObj->getAllocKind());
}
}
if (!clone || !clonedObjects.relookupOrAdd(p, srcObj.get(), clone.get()) ||
!CloneProperties(cx, srcObj, clone, clonedObjects))
{
return NULL;
}
return clone;
}
static JSBool
fun_resolve(JSContext *cx, HandleObject obj, HandleId id, unsigned flags,
JSObject **objp)
{
if (!JSID_IS_ATOM(id))
return true;
RootedFunction fun(cx);
fun = obj->toFunction();
if (JSID_IS_ATOM(id, cx->runtime->atomState.classPrototypeAtom)) {
/*
* Native or "built-in" functions do not have a .prototype property per
* ECMA-262, or (Object.prototype, Function.prototype, etc.) have that
* property created eagerly.
*
* ES5 15.3.4: the non-native function object named Function.prototype
* does not have a .prototype property.
*
* ES5 15.3.4.5: bound functions don't have a prototype property. The
* isNative() test covers this case because bound functions are native
* functions by definition/construction.
*/
if (fun->isNative() || fun->isFunctionPrototype())
return true;
if (!ResolveInterpretedFunctionPrototype(cx, fun))
return false;
*objp = fun;
return true;
}
if (JSID_IS_ATOM(id, cx->runtime->atomState.lengthAtom) ||
JSID_IS_ATOM(id, cx->runtime->atomState.nameAtom)) {
JS_ASSERT(!IsInternalFunctionObject(obj));
Value v;
if (JSID_IS_ATOM(id, cx->runtime->atomState.lengthAtom))
v.setInt32(fun->nargs - fun->hasRest());
else
v.setString(fun->atom ? fun->atom : cx->runtime->emptyString);
if (!DefineNativeProperty(cx, fun, id, v, JS_PropertyStub, JS_StrictPropertyStub,
JSPROP_PERMANENT | JSPROP_READONLY, 0, 0)) {
return false;
}
*objp = fun;
return true;
}
for (unsigned i = 0; i < ArrayLength(poisonPillProps); i++) {
const uint16_t offset = poisonPillProps[i];
if (JSID_IS_ATOM(id, OFFSET_TO_NAME(cx->runtime, offset))) {
JS_ASSERT(!IsInternalFunctionObject(fun));
PropertyOp getter;
StrictPropertyOp setter;
unsigned attrs = JSPROP_PERMANENT;
if (fun->isInterpreted() ? fun->inStrictMode() : fun->isBoundFunction()) {
JSObject *throwTypeError = fun->global().getThrowTypeError();
getter = CastAsPropertyOp(throwTypeError);
setter = CastAsStrictPropertyOp(throwTypeError);
attrs |= JSPROP_GETTER | JSPROP_SETTER;
} else {
getter = fun_getProperty;
setter = JS_StrictPropertyStub;
}
if (!DefineNativeProperty(cx, fun, id, UndefinedValue(), getter, setter,
attrs, 0, 0)) {
return false;
}
*objp = fun;
return true;
}
}
return true;
}
