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-rw-r--r--Source/JavaScriptCore/runtime/ObjectConstructor.h138
1 files changed, 89 insertions, 49 deletions
diff --git a/Source/JavaScriptCore/runtime/ObjectConstructor.h b/Source/JavaScriptCore/runtime/ObjectConstructor.h
index 4a6b4711b..fc52790da 100644
--- a/Source/JavaScriptCore/runtime/ObjectConstructor.h
+++ b/Source/JavaScriptCore/runtime/ObjectConstructor.h
@@ -1,6 +1,6 @@
/*
* Copyright (C) 1999-2000 Harri Porten (porten@kde.org)
- * Copyright (C) 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008, 2016-2017 Apple Inc. All rights reserved.
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
@@ -18,8 +18,7 @@
*
*/
-#ifndef ObjectConstructor_h
-#define ObjectConstructor_h
+#pragma once
#include "InternalFunction.h"
#include "JSGlobalObject.h"
@@ -27,62 +26,103 @@
namespace JSC {
- class ObjectPrototype;
+EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptor(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertyDescriptors(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorGetOwnPropertySymbols(ExecState*);
+EncodedJSValue JSC_HOST_CALL objectConstructorKeys(ExecState*);
+EncodedJSValue JSC_HOST_CALL ownEnumerablePropertyKeys(ExecState*);
- class ObjectConstructor : public InternalFunction {
- public:
- typedef InternalFunction Base;
+class ObjectPrototype;
- static ObjectConstructor* create(VM& vm, Structure* structure, ObjectPrototype* objectPrototype)
- {
- ObjectConstructor* constructor = new (NotNull, allocateCell<ObjectConstructor>(vm.heap)) ObjectConstructor(vm, structure);
- constructor->finishCreation(vm, objectPrototype);
- return constructor;
- }
+class ObjectConstructor : public InternalFunction {
+public:
+ typedef InternalFunction Base;
+ static const unsigned StructureFlags = Base::StructureFlags | HasStaticPropertyTable;
- static bool getOwnPropertySlot(JSObject*, ExecState*, PropertyName, PropertySlot&);
-
- DECLARE_INFO;
-
- static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
- {
- return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
- }
-
- protected:
- void finishCreation(VM& vm, ObjectPrototype*);
- static const unsigned StructureFlags = OverridesGetOwnPropertySlot | InternalFunction::StructureFlags;
-
- private:
- ObjectConstructor(VM&, Structure*);
- static ConstructType getConstructData(JSCell*, ConstructData&);
- static CallType getCallData(JSCell*, CallData&);
- };
-
- inline JSObject* constructEmptyObject(ExecState* exec, Structure* structure)
+ static ObjectConstructor* create(VM& vm, JSGlobalObject* globalObject, Structure* structure, ObjectPrototype* objectPrototype)
{
- return JSFinalObject::create(exec, structure);
+ ObjectConstructor* constructor = new (NotNull, allocateCell<ObjectConstructor>(vm.heap)) ObjectConstructor(vm, structure);
+ constructor->finishCreation(vm, globalObject, objectPrototype);
+ return constructor;
}
- inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype, unsigned inlineCapacity)
- {
- JSGlobalObject* globalObject = exec->lexicalGlobalObject();
- PrototypeMap& prototypeMap = globalObject->vm().prototypeMap;
- Structure* structure = prototypeMap.emptyObjectStructureForPrototype(
- prototype, inlineCapacity);
- return constructEmptyObject(exec, structure);
- }
+ DECLARE_INFO;
- inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype)
+ static Structure* createStructure(VM& vm, JSGlobalObject* globalObject, JSValue prototype)
{
- return constructEmptyObject(exec, prototype, JSFinalObject::defaultInlineCapacity());
+ return Structure::create(vm, globalObject, prototype, TypeInfo(ObjectType, StructureFlags), info());
}
- inline JSObject* constructEmptyObject(ExecState* exec)
- {
- return constructEmptyObject(exec, exec->lexicalGlobalObject()->objectPrototype());
+protected:
+ void finishCreation(VM&, JSGlobalObject*, ObjectPrototype*);
+
+private:
+ ObjectConstructor(VM&, Structure*);
+ static ConstructType getConstructData(JSCell*, ConstructData&);
+ static CallType getCallData(JSCell*, CallData&);
+};
+
+inline JSObject* constructEmptyObject(ExecState* exec, Structure* structure)
+{
+ return JSFinalObject::create(exec, structure);
+}
+
+inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype, unsigned inlineCapacity)
+{
+ JSGlobalObject* globalObject = exec->lexicalGlobalObject();
+ PrototypeMap& prototypeMap = globalObject->vm().prototypeMap;
+ Structure* structure = prototypeMap.emptyObjectStructureForPrototype(globalObject, prototype, inlineCapacity);
+ return constructEmptyObject(exec, structure);
+}
+
+inline JSObject* constructEmptyObject(ExecState* exec, JSObject* prototype)
+{
+ return constructEmptyObject(exec, prototype, JSFinalObject::defaultInlineCapacity());
+}
+
+inline JSObject* constructEmptyObject(ExecState* exec)
+{
+ return constructEmptyObject(exec, exec->lexicalGlobalObject()->objectStructureForObjectConstructor());
+}
+
+inline JSObject* constructObject(ExecState* exec, JSGlobalObject* globalObject, JSValue arg)
+{
+ if (arg.isUndefinedOrNull())
+ return constructEmptyObject(exec, globalObject->objectPrototype());
+ return arg.toObject(exec, globalObject);
+}
+
+// Section 6.2.4.4 of the ES6 specification.
+// https://tc39.github.io/ecma262/#sec-frompropertydescriptor
+inline JSObject* constructObjectFromPropertyDescriptor(ExecState* exec, const PropertyDescriptor& descriptor)
+{
+ VM& vm = exec->vm();
+ auto scope = DECLARE_THROW_SCOPE(vm);
+ JSObject* description = constructEmptyObject(exec);
+ RETURN_IF_EXCEPTION(scope, nullptr);
+
+ if (!descriptor.isAccessorDescriptor()) {
+ description->putDirect(vm, vm.propertyNames->value, descriptor.value() ? descriptor.value() : jsUndefined(), 0);
+ description->putDirect(vm, vm.propertyNames->writable, jsBoolean(descriptor.writable()), 0);
+ } else {
+ ASSERT(descriptor.getter() || descriptor.setter());
+ if (descriptor.getter())
+ description->putDirect(vm, vm.propertyNames->get, descriptor.getter(), 0);
+ if (descriptor.setter())
+ description->putDirect(vm, vm.propertyNames->set, descriptor.setter(), 0);
}
+
+ description->putDirect(vm, vm.propertyNames->enumerable, jsBoolean(descriptor.enumerable()), 0);
+ description->putDirect(vm, vm.propertyNames->configurable, jsBoolean(descriptor.configurable()), 0);
-} // namespace JSC
+ return description;
+}
-#endif // ObjectConstructor_h
+
+JS_EXPORT_PRIVATE JSObject* objectConstructorFreeze(ExecState*, JSObject*);
+JSValue objectConstructorGetOwnPropertyDescriptor(ExecState*, JSObject*, const Identifier&);
+JSValue objectConstructorGetOwnPropertyDescriptors(ExecState*, JSObject*);
+JSArray* ownPropertyKeys(ExecState*, JSObject*, PropertyNameMode, DontEnumPropertiesMode);
+bool toPropertyDescriptor(ExecState*, JSValue, PropertyDescriptor&);
+
+} // namespace JSC
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