Merge 'wip/next' into dev

Change-Id: Iff9ee5e23bb326c4371ec8ed81d56f2f05d680e9

1 files changed, 217 insertions, 0 deletions

diff --git a/Source/JavaScriptCore/runtime/ReflectObject.cpp b/Source/JavaScriptCore/runtime/ReflectObject.cpp
new file mode 100644
index 000000000..df7206bc9
--- /dev/null
+++ b/Source/JavaScriptCore/runtime/ReflectObject.cpp
@@ -0,0 +1,217 @@
+/*
+ * Copyright (C) 2015 Apple Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY APPLE INC. ``AS IS'' AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
+ * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE INC. OR
+ * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
+ * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
+ * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
+ * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
+ * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+#include "config.h"
+#include "ReflectObject.h"
+
+#include "JSCInlines.h"
+#include "JSGlobalObjectFunctions.h"
+#include "JSPropertyNameIterator.h"
+#include "Lookup.h"
+#include "ObjectConstructor.h"
+
+namespace JSC {
+
+static EncodedJSValue JSC_HOST_CALL reflectObjectDefineProperty(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectEnumerate(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectGet(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectGetOwnPropertyDescriptor(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectGetPrototypeOf(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectIsExtensible(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectOwnKeys(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectPreventExtensions(ExecState*);
+static EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState*);
+
+}
+
+#include "ReflectObject.lut.h"
+
+namespace JSC {
+
+STATIC_ASSERT_IS_TRIVIALLY_DESTRUCTIBLE(ReflectObject);
+
+const ClassInfo ReflectObject::s_info = { "Reflect", &Base::s_info, &reflectObjectTable, CREATE_METHOD_TABLE(ReflectObject) };
+
+/* Source for ReflectObject.lut.h
+@begin reflectObjectTable
+    apply                    JSBuiltin                             DontEnum|Function 3
+    defineProperty           reflectObjectDefineProperty           DontEnum|Function 3
+    deleteProperty           JSBuiltin                             DontEnum|Function 2
+    enumerate                reflectObjectEnumerate                DontEnum|Function 1
+    get                      reflectObjectGet                      DontEnum|Function 2
+    getOwnPropertyDescriptor reflectObjectGetOwnPropertyDescriptor DontEnum|Function 2
+    getPrototypeOf           reflectObjectGetPrototypeOf           DontEnum|Function 1
+    has                      JSBuiltin                             DontEnum|Function 2
+    isExtensible             reflectObjectIsExtensible             DontEnum|Function 1
+    ownKeys                  reflectObjectOwnKeys                  DontEnum|Function 1
+    preventExtensions        reflectObjectPreventExtensions        DontEnum|Function 1
+    setPrototypeOf           reflectObjectSetPrototypeOf           DontEnum|Function 2
+@end
+*/
+
+ReflectObject::ReflectObject(VM& vm, Structure* structure)
+    : JSNonFinalObject(vm, structure)
+{
+}
+
+void ReflectObject::finishCreation(VM& vm, JSGlobalObject*)
+{
+    Base::finishCreation(vm);
+    ASSERT(inherits(info()));
+}
+
+bool ReflectObject::getOwnPropertySlot(JSObject* object, ExecState* exec, PropertyName propertyName, PropertySlot &slot)
+{
+    return getStaticFunctionSlot<Base>(exec, reflectObjectTable, jsCast<ReflectObject*>(object), propertyName, slot);
+}
+
+// ------------------------------ Functions --------------------------------
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.defineproperty
+EncodedJSValue JSC_HOST_CALL reflectObjectDefineProperty(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.defineProperty requires the first argument be an object")));
+    auto propertyName = exec->argument(1).toPropertyKey(exec);
+    if (exec->hadException())
+        return JSValue::encode(jsUndefined());
+
+    PropertyDescriptor descriptor;
+    if (!toPropertyDescriptor(exec, exec->argument(2), descriptor))
+        return JSValue::encode(jsUndefined());
+    ASSERT((descriptor.attributes() & Accessor) || (!descriptor.isAccessorDescriptor()));
+    ASSERT(!exec->hadException());
+
+    // Reflect.defineProperty should not throw an error when the defineOwnProperty operation fails.
+    bool shouldThrow = false;
+    JSObject* targetObject = asObject(target);
+    return JSValue::encode(jsBoolean(targetObject->methodTable(exec->vm())->defineOwnProperty(targetObject, exec, propertyName, descriptor, shouldThrow)));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.enumerate
+EncodedJSValue JSC_HOST_CALL reflectObjectEnumerate(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.enumerate requires the first argument be an object")));
+    return JSValue::encode(JSPropertyNameIterator::create(exec, exec->lexicalGlobalObject()->propertyNameIteratorStructure(), asObject(target)));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.get
+EncodedJSValue JSC_HOST_CALL reflectObjectGet(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.get requires the first argument be an object")));
+
+    const Identifier propertyName = exec->argument(1).toPropertyKey(exec);
+    if (exec->hadException())
+        return JSValue::encode(jsNull());
+
+    JSValue receiver = target;
+    if (exec->argumentCount() >= 3)
+        receiver = exec->argument(2);
+
+    PropertySlot slot(receiver, PropertySlot::InternalMethodType::Get);
+    return JSValue::encode(target.get(exec, propertyName, slot));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.getownpropertydescriptor
+EncodedJSValue JSC_HOST_CALL reflectObjectGetOwnPropertyDescriptor(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.getOwnPropertyDescriptor requires the first argument be an object")));
+
+    auto key = exec->argument(1).toPropertyKey(exec);
+    if (exec->hadException())
+        return JSValue::encode(jsUndefined());
+
+    return JSValue::encode(objectConstructorGetOwnPropertyDescriptor(exec, asObject(target), key));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.getprototypeof
+EncodedJSValue JSC_HOST_CALL reflectObjectGetPrototypeOf(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.getPrototypeOf requires the first argument be an object")));
+    return JSValue::encode(objectConstructorGetPrototypeOf(exec, asObject(target)));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.isextensible
+EncodedJSValue JSC_HOST_CALL reflectObjectIsExtensible(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.isExtensible requires the first argument be an object")));
+    return JSValue::encode(jsBoolean(asObject(target)->isExtensible()));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.ownkeys
+EncodedJSValue JSC_HOST_CALL reflectObjectOwnKeys(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.ownKeys requires the first argument be an object")));
+    return JSValue::encode(ownPropertyKeys(exec, jsCast<JSObject*>(target), PropertyNameMode::StringsAndSymbols, DontEnumPropertiesMode::Include));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.preventextensions
+EncodedJSValue JSC_HOST_CALL reflectObjectPreventExtensions(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.preventExtensions requires the first argument be an object")));
+    asObject(target)->preventExtensions(exec->vm());
+    return JSValue::encode(jsBoolean(true));
+}
+
+// http://www.ecma-international.org/ecma-262/6.0/#sec-reflect.setprototypeof
+EncodedJSValue JSC_HOST_CALL reflectObjectSetPrototypeOf(ExecState* exec)
+{
+    JSValue target = exec->argument(0);
+    if (!target.isObject())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the first argument be an object")));
+    JSValue proto = exec->argument(1);
+    if (!proto.isObject() && !proto.isNull())
+        return JSValue::encode(throwTypeError(exec, ASCIILiteral("Reflect.setPrototypeOf requires the second argument be either an object or null")));
+
+    JSObject* object = asObject(target);
+
+    if (!checkProtoSetterAccessAllowed(exec, object))
+        return JSValue::encode(jsBoolean(false));
+
+    if (object->prototype() == proto)
+        return JSValue::encode(jsBoolean(true));
+
+    if (!object->isExtensible())
+        return JSValue::encode(jsBoolean(false));
+
+    return JSValue::encode(jsBoolean(object->setPrototypeWithCycleCheck(exec, proto)));
+}
+
+} // namespace JSC