X-Git-Url: https://git.saurik.com/apple/javascriptcore.git/blobdiff_plain/b37bf2e156556c589aea3e1f58a377f2b1189665..refs/heads/master:/API/JSObjectRef.cpp

diff --git a/API/JSObjectRef.cpp b/API/JSObjectRef.cpp
index c6cda25..faf38ff 100644
--- a/API/JSObjectRef.cpp
+++ b/API/JSObjectRef.cpp
@@ -1,6 +1,6 @@
-// -*- mode: c++; c-basic-offset: 4 -*-
 /*
- * Copyright (C) 2006, 2007 Apple Inc. All rights reserved.
+ * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
+ * Copyright (C) 2008 Kelvin W Sherlock (ksherlock@gmail.com)
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -11,347 +11,640 @@
  *    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 COMPUTER, INC. ``AS IS'' AND ANY
+ * 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 COMPUTER, INC. OR
+ * 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. 
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 
 #include "config.h"
 #include "JSObjectRef.h"
+#include "JSObjectRefPrivate.h"
 
-#include <wtf/Platform.h>
 #include "APICast.h"
-#include "JSValueRef.h"
+#include "ButterflyInlines.h"
+#include "CodeBlock.h"
+#include "CopiedSpaceInlines.h"
+#include "DateConstructor.h"
+#include "ErrorConstructor.h"
+#include "Exception.h"
+#include "FunctionConstructor.h"
+#include "Identifier.h"
+#include "InitializeThreading.h"
+#include "JSAPIWrapperObject.h"
+#include "JSArray.h"
 #include "JSCallbackConstructor.h"
 #include "JSCallbackFunction.h"
 #include "JSCallbackObject.h"
 #include "JSClassRef.h"
+#include "JSFunction.h"
 #include "JSGlobalObject.h"
-
+#include "JSObject.h"
+#include "JSRetainPtr.h"
+#include "JSString.h"
+#include "JSValueRef.h"
+#include "ObjectConstructor.h"
+#include "ObjectPrototype.h"
+#include "JSCInlines.h"
 #include "PropertyNameArray.h"
-#include "function.h"
-#include "function_object.h"
-#include "identifier.h"
-#include "internal.h"
-#include "object.h"
-#include "object_object.h"
+#include "RegExpConstructor.h"
 
-using namespace KJS;
+#if ENABLE(REMOTE_INSPECTOR)
+#include "JSGlobalObjectInspectorController.h"
+#endif
+
+using namespace JSC;
+
+enum class ExceptionStatus {
+    DidThrow,
+    DidNotThrow
+};
+
+static ExceptionStatus handleExceptionIfNeeded(ExecState* exec, JSValueRef* returnedExceptionRef)
+{
+    if (exec->hadException()) {
+        Exception* exception = exec->exception();
+        if (returnedExceptionRef)
+            *returnedExceptionRef = toRef(exec, exception->value());
+        exec->clearException();
+#if ENABLE(REMOTE_INSPECTOR)
+        exec->vmEntryGlobalObject()->inspectorController().reportAPIException(exec, exception);
+#endif
+        return ExceptionStatus::DidThrow;
+    }
+    return ExceptionStatus::DidNotThrow;
+}
 
 JSClassRef JSClassCreate(const JSClassDefinition* definition)
 {
-    JSLock lock;
-    JSClassRef jsClass = (definition->attributes & kJSClassAttributeNoAutomaticPrototype)
+    initializeThreading();
+    RefPtr<OpaqueJSClass> jsClass = (definition->attributes & kJSClassAttributeNoAutomaticPrototype)
         ? OpaqueJSClass::createNoAutomaticPrototype(definition)
         : OpaqueJSClass::create(definition);
     
-    return JSClassRetain(jsClass);
+    return jsClass.release().leakRef();
 }
 
 JSClassRef JSClassRetain(JSClassRef jsClass)
 {
-    JSLock lock;
     jsClass->ref();
     return jsClass;
 }
 
 void JSClassRelease(JSClassRef jsClass)
 {
-    JSLock lock;
     jsClass->deref();
 }
 
 JSObjectRef JSObjectMake(JSContextRef ctx, JSClassRef jsClass, void* data)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
 
     if (!jsClass)
-        return toRef(new JSObject(exec->lexicalGlobalObject()->objectPrototype())); // slightly more efficient
+        return toRef(constructEmptyObject(exec));
 
-    JSValue* jsPrototype = jsClass->prototype(ctx);
-    if (!jsPrototype)
-        jsPrototype = exec->lexicalGlobalObject()->objectPrototype();
+    JSCallbackObject<JSDestructibleObject>* object = JSCallbackObject<JSDestructibleObject>::create(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->callbackObjectStructure(), jsClass, data);
+    if (JSObject* prototype = jsClass->prototype(exec))
+        object->setPrototype(exec->vm(), prototype);
 
-    return toRef(new JSCallbackObject<JSObject>(exec, jsClass, jsPrototype, data));
+    return toRef(object);
 }
 
 JSObjectRef JSObjectMakeFunctionWithCallback(JSContextRef ctx, JSStringRef name, JSObjectCallAsFunctionCallback callAsFunction)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
-    Identifier nameID = name ? Identifier(toJS(name)) : Identifier("anonymous");
-    
-    return toRef(new JSCallbackFunction(exec, callAsFunction, nameID));
+    JSLockHolder locker(exec);
+    return toRef(JSCallbackFunction::create(exec->vm(), exec->lexicalGlobalObject(), callAsFunction, name ? name->string() : ASCIILiteral("anonymous")));
 }
 
 JSObjectRef JSObjectMakeConstructor(JSContextRef ctx, JSClassRef jsClass, JSObjectCallAsConstructorCallback callAsConstructor)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
-    
-    JSValue* jsPrototype = jsClass 
-        ? jsClass->prototype(ctx)
-        : exec->dynamicGlobalObject()->objectPrototype();
-    
-    JSCallbackConstructor* constructor = new JSCallbackConstructor(exec, jsClass, callAsConstructor);
-    constructor->putDirect(exec->propertyNames().prototype, jsPrototype, DontEnum | DontDelete | ReadOnly);
+    JSLockHolder locker(exec);
+
+    JSValue jsPrototype = jsClass ? jsClass->prototype(exec) : 0;
+    if (!jsPrototype)
+        jsPrototype = exec->lexicalGlobalObject()->objectPrototype();
+
+    JSCallbackConstructor* constructor = JSCallbackConstructor::create(exec, exec->lexicalGlobalObject(), exec->lexicalGlobalObject()->callbackConstructorStructure(), jsClass, callAsConstructor);
+    constructor->putDirect(exec->vm(), exec->propertyNames().prototype, jsPrototype, DontEnum | DontDelete | ReadOnly);
     return toRef(constructor);
 }
 
 JSObjectRef JSObjectMakeFunction(JSContextRef ctx, JSStringRef name, unsigned parameterCount, const JSStringRef parameterNames[], JSStringRef body, JSStringRef sourceURL, int startingLineNumber, JSValueRef* exception)
 {
-    JSLock lock;
-    
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
-    UString::Rep* bodyRep = toJS(body);
-    UString::Rep* sourceURLRep = sourceURL ? toJS(sourceURL) : &UString::Rep::null;
-    
-    Identifier nameID = name ? Identifier(toJS(name)) : Identifier("anonymous");
+    JSLockHolder locker(exec);
+
+    startingLineNumber = std::max(1, startingLineNumber);
+    Identifier nameID = name ? name->identifier(&exec->vm()) : Identifier::fromString(exec, "anonymous");
     
-    List args;
+    MarkedArgumentBuffer args;
     for (unsigned i = 0; i < parameterCount; i++)
-        args.append(jsString(UString(toJS(parameterNames[i]))));
-    args.append(jsString(UString(bodyRep)));
+        args.append(jsString(exec, parameterNames[i]->string()));
+    args.append(jsString(exec, body->string()));
 
-    JSObject* result = exec->dynamicGlobalObject()->functionConstructor()->construct(exec, args, nameID, UString(sourceURLRep), startingLineNumber);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
+    JSObject* result = constructFunction(exec, exec->lexicalGlobalObject(), args, nameID, sourceURL ? sourceURL->string() : String(), TextPosition(OrdinalNumber::fromOneBasedInt(startingLineNumber), OrdinalNumber::first()));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
+    return toRef(result);
+}
+
+JSObjectRef JSObjectMakeArray(JSContextRef ctx, size_t argumentCount, const JSValueRef arguments[],  JSValueRef* exception)
+{
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
     }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    JSObject* result;
+    if (argumentCount) {
+        MarkedArgumentBuffer argList;
+        for (size_t i = 0; i < argumentCount; ++i)
+            argList.append(toJS(exec, arguments[i]));
+
+        result = constructArray(exec, static_cast<ArrayAllocationProfile*>(0), argList);
+    } else
+        result = constructEmptyArray(exec, 0);
+
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
+        result = 0;
+
     return toRef(result);
 }
 
-JSValueRef JSObjectGetPrototype(JSContextRef, JSObjectRef object)
+JSObjectRef JSObjectMakeDate(JSContextRef ctx, size_t argumentCount, const JSValueRef arguments[],  JSValueRef* exception)
 {
-    JSObject* jsObject = toJS(object);
-    return toRef(jsObject->prototype());
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    MarkedArgumentBuffer argList;
+    for (size_t i = 0; i < argumentCount; ++i)
+        argList.append(toJS(exec, arguments[i]));
+
+    JSObject* result = constructDate(exec, exec->lexicalGlobalObject(), argList);
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
+        result = 0;
+
+    return toRef(result);
+}
+
+JSObjectRef JSObjectMakeError(JSContextRef ctx, size_t argumentCount, const JSValueRef arguments[],  JSValueRef* exception)
+{
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    JSValue message = argumentCount ? toJS(exec, arguments[0]) : jsUndefined();
+    Structure* errorStructure = exec->lexicalGlobalObject()->errorStructure();
+    JSObject* result = ErrorInstance::create(exec, errorStructure, message);
+
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
+        result = 0;
+
+    return toRef(result);
 }
 
-void JSObjectSetPrototype(JSContextRef, JSObjectRef object, JSValueRef value)
+JSObjectRef JSObjectMakeRegExp(JSContextRef ctx, size_t argumentCount, const JSValueRef arguments[],  JSValueRef* exception)
 {
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    MarkedArgumentBuffer argList;
+    for (size_t i = 0; i < argumentCount; ++i)
+        argList.append(toJS(exec, arguments[i]));
+
+    JSObject* result = constructRegExp(exec, exec->lexicalGlobalObject(),  argList);
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
+        result = 0;
+    
+    return toRef(result);
+}
+
+JSValueRef JSObjectGetPrototype(JSContextRef ctx, JSObjectRef object)
+{
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    JSValue* jsValue = toJS(value);
+    return toRef(exec, jsObject->prototype());
+}
 
-    jsObject->setPrototype(jsValue);
+void JSObjectSetPrototype(JSContextRef ctx, JSObjectRef object, JSValueRef value)
+{
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    JSObject* jsObject = toJS(object);
+    JSValue jsValue = toJS(exec, value);
+
+    if (JSProxy* proxy = jsDynamicCast<JSProxy*>(jsObject)) {
+        if (JSGlobalObject* globalObject = jsDynamicCast<JSGlobalObject*>(proxy->target())) {
+            globalObject->resetPrototype(exec->vm(), jsValue.isObject() ? jsValue : jsNull());
+            return;
+        }
+        // Someday we might use proxies for something other than JSGlobalObjects, but today is not that day.
+        RELEASE_ASSERT_NOT_REACHED();
+    }
+    jsObject->setPrototypeWithCycleCheck(exec, jsValue.isObject() ? jsValue : jsNull());
 }
 
 bool JSObjectHasProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return false;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    UString::Rep* nameRep = toJS(propertyName);
     
-    return jsObject->hasProperty(exec, Identifier(nameRep));
+    return jsObject->hasProperty(exec, propertyName->identifier(&exec->vm()));
 }
 
 JSValueRef JSObjectGetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    UString::Rep* nameRep = toJS(propertyName);
 
-    JSValue* jsValue = jsObject->get(exec, Identifier(nameRep));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
-    }
-    return toRef(jsValue);
+    JSValue jsValue = jsObject->get(exec, propertyName->identifier(&exec->vm()));
+    handleExceptionIfNeeded(exec, exception);
+    return toRef(exec, jsValue);
 }
 
 void JSObjectSetProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value, JSPropertyAttributes attributes, JSValueRef* exception)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    UString::Rep* nameRep = toJS(propertyName);
-    JSValue* jsValue = toJS(value);
-    
-    jsObject->put(exec, Identifier(nameRep), jsValue, attributes);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
+    Identifier name(propertyName->identifier(&exec->vm()));
+    JSValue jsValue = toJS(exec, value);
+
+    if (attributes && !jsObject->hasProperty(exec, name)) {
+        PropertyDescriptor desc(jsValue, attributes);
+        jsObject->methodTable()->defineOwnProperty(jsObject, exec, name, desc, false);
+    } else {
+        PutPropertySlot slot(jsObject);
+        jsObject->methodTable()->put(jsObject, exec, name, jsValue, slot);
     }
+
+    handleExceptionIfNeeded(exec, exception);
 }
 
 JSValueRef JSObjectGetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsigned propertyIndex, JSValueRef* exception)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
 
-    JSValue* jsValue = jsObject->get(exec, propertyIndex);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
-    }
-    return toRef(jsValue);
+    JSValue jsValue = jsObject->get(exec, propertyIndex);
+    handleExceptionIfNeeded(exec, exception);
+    return toRef(exec, jsValue);
 }
 
 
 void JSObjectSetPropertyAtIndex(JSContextRef ctx, JSObjectRef object, unsigned propertyIndex, JSValueRef value, JSValueRef* exception)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    JSValue* jsValue = toJS(value);
+    JSValue jsValue = toJS(exec, value);
     
-    jsObject->put(exec, propertyIndex, jsValue);
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
-    }
+    jsObject->methodTable()->putByIndex(jsObject, exec, propertyIndex, jsValue, false);
+    handleExceptionIfNeeded(exec, exception);
 }
 
 bool JSObjectDeleteProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef* exception)
 {
-    JSLock lock;
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return false;
+    }
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
     JSObject* jsObject = toJS(object);
-    UString::Rep* nameRep = toJS(propertyName);
 
-    bool result = jsObject->deleteProperty(exec, Identifier(nameRep));
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
-    }
+    bool result = jsObject->methodTable()->deleteProperty(jsObject, exec, propertyName->identifier(&exec->vm()));
+    handleExceptionIfNeeded(exec, exception);
     return result;
 }
 
 void* JSObjectGetPrivate(JSObjectRef object)
 {
-    JSObject* jsObject = toJS(object);
-    
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::info))
-        return static_cast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivate();
-    else if (jsObject->inherits(&JSCallbackObject<JSObject>::info))
-        return static_cast<JSCallbackObject<JSObject>*>(jsObject)->getPrivate();
+    JSObject* jsObject = uncheckedToJS(object);
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info()))
+        return jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivate();
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info()))
+        return jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->getPrivate();
+#if JSC_OBJC_API_ENABLED
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info()))
+        return jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->getPrivate();
+#endif
     
     return 0;
 }
 
 bool JSObjectSetPrivate(JSObjectRef object, void* data)
 {
-    JSObject* jsObject = toJS(object);
-    
-    if (jsObject->inherits(&JSCallbackObject<JSGlobalObject>::info)) {
-        static_cast<JSCallbackObject<JSGlobalObject>*>(jsObject)->setPrivate(data);
+    JSObject* jsObject = uncheckedToJS(object);
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
+        jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->setPrivate(data);
         return true;
-    } else if (jsObject->inherits(&JSCallbackObject<JSObject>::info)) {
-        static_cast<JSCallbackObject<JSObject>*>(jsObject)->setPrivate(data);
+    }
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
+        jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->setPrivate(data);
+        return true;
+    }
+#if JSC_OBJC_API_ENABLED
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
+        jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->setPrivate(data);
         return true;
     }
+#endif
         
     return false;
 }
 
-bool JSObjectIsFunction(JSContextRef, JSObjectRef object)
+JSValueRef JSObjectGetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
+{
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+    JSObject* jsObject = toJS(object);
+    JSValue result;
+    Identifier name(propertyName->identifier(&exec->vm()));
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info()))
+        result = jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->getPrivateProperty(name);
+    else if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info()))
+        result = jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->getPrivateProperty(name);
+#if JSC_OBJC_API_ENABLED
+    else if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info()))
+        result = jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->getPrivateProperty(name);
+#endif
+    return toRef(exec, result);
+}
+
+bool JSObjectSetPrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName, JSValueRef value)
+{
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+    JSObject* jsObject = toJS(object);
+    JSValue jsValue = value ? toJS(exec, value) : JSValue();
+    Identifier name(propertyName->identifier(&exec->vm()));
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
+        jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
+        return true;
+    }
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
+        jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
+        return true;
+    }
+#if JSC_OBJC_API_ENABLED
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
+        jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->setPrivateProperty(exec->vm(), name, jsValue);
+        return true;
+    }
+#endif
+    return false;
+}
+
+bool JSObjectDeletePrivateProperty(JSContextRef ctx, JSObjectRef object, JSStringRef propertyName)
 {
+    ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
     JSObject* jsObject = toJS(object);
-    return jsObject->implementsCall();
+    Identifier name(propertyName->identifier(&exec->vm()));
+
+    // Get wrapped object if proxied
+    if (jsObject->inherits(JSProxy::info()))
+        jsObject = jsCast<JSProxy*>(jsObject)->target();
+
+    if (jsObject->inherits(JSCallbackObject<JSGlobalObject>::info())) {
+        jsCast<JSCallbackObject<JSGlobalObject>*>(jsObject)->deletePrivateProperty(name);
+        return true;
+    }
+    if (jsObject->inherits(JSCallbackObject<JSDestructibleObject>::info())) {
+        jsCast<JSCallbackObject<JSDestructibleObject>*>(jsObject)->deletePrivateProperty(name);
+        return true;
+    }
+#if JSC_OBJC_API_ENABLED
+    if (jsObject->inherits(JSCallbackObject<JSAPIWrapperObject>::info())) {
+        jsCast<JSCallbackObject<JSAPIWrapperObject>*>(jsObject)->deletePrivateProperty(name);
+        return true;
+    }
+#endif
+    return false;
+}
+
+bool JSObjectIsFunction(JSContextRef ctx, JSObjectRef object)
+{
+    if (!object)
+        return false;
+    JSLockHolder locker(toJS(ctx));
+    CallData callData;
+    JSCell* cell = toJS(object);
+    return cell->methodTable()->getCallData(cell, callData) != CallTypeNone;
 }
 
 JSValueRef JSObjectCallAsFunction(JSContextRef ctx, JSObjectRef object, JSObjectRef thisObject, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
 {
-    JSLock lock;
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    if (!object)
+        return 0;
+
     JSObject* jsObject = toJS(object);
     JSObject* jsThisObject = toJS(thisObject);
 
     if (!jsThisObject)
-        jsThisObject = exec->dynamicGlobalObject();
-    
-    List argList;
+        jsThisObject = exec->globalThisValue();
+
+    MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; i++)
-        argList.append(toJS(arguments[i]));
+        argList.append(toJS(exec, arguments[i]));
 
-    JSValueRef result = toRef(jsObject->call(exec, jsThisObject, argList)); // returns NULL if object->implementsCall() is false
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
+    CallData callData;
+    CallType callType = jsObject->methodTable()->getCallData(jsObject, callData);
+    if (callType == CallTypeNone)
+        return 0;
+
+    JSValueRef result = toRef(exec, call(exec, jsObject, callType, callData, jsThisObject, argList));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     return result;
 }
 
 bool JSObjectIsConstructor(JSContextRef, JSObjectRef object)
 {
+    if (!object)
+        return false;
     JSObject* jsObject = toJS(object);
-    return jsObject->implementsConstruct();
+    ConstructData constructData;
+    return jsObject->methodTable()->getConstructData(jsObject, constructData) != ConstructTypeNone;
 }
 
 JSObjectRef JSObjectCallAsConstructor(JSContextRef ctx, JSObjectRef object, size_t argumentCount, const JSValueRef arguments[], JSValueRef* exception)
 {
-    JSLock lock;
     ExecState* exec = toJS(ctx);
+    JSLockHolder locker(exec);
+
+    if (!object)
+        return 0;
+
     JSObject* jsObject = toJS(object);
-    
-    List argList;
+
+    ConstructData constructData;
+    ConstructType constructType = jsObject->methodTable()->getConstructData(jsObject, constructData);
+    if (constructType == ConstructTypeNone)
+        return 0;
+
+    MarkedArgumentBuffer argList;
     for (size_t i = 0; i < argumentCount; i++)
-        argList.append(toJS(arguments[i]));
-    
-    JSObjectRef result = toRef(jsObject->construct(exec, argList)); // returns NULL if object->implementsCall() is false
-    if (exec->hadException()) {
-        if (exception)
-            *exception = toRef(exec->exception());
-        exec->clearException();
+        argList.append(toJS(exec, arguments[i]));
+    JSObjectRef result = toRef(construct(exec, jsObject, constructType, constructData, argList));
+    if (handleExceptionIfNeeded(exec, exception) == ExceptionStatus::DidThrow)
         result = 0;
-    }
     return result;
 }
 
-struct OpaqueJSPropertyNameArray
-{
-    OpaqueJSPropertyNameArray() : refCount(0)
+struct OpaqueJSPropertyNameArray {
+    WTF_MAKE_FAST_ALLOCATED;
+public:
+    OpaqueJSPropertyNameArray(VM* vm)
+        : refCount(0)
+        , vm(vm)
     {
     }
     
     unsigned refCount;
-    PropertyNameArray array;
+    VM* vm;
+    Vector<JSRetainPtr<JSStringRef>> array;
 };
 
 JSPropertyNameArrayRef JSObjectCopyPropertyNames(JSContextRef ctx, JSObjectRef object)
 {
-    JSLock lock;
-    JSObject* jsObject = toJS(object);
+    if (!ctx) {
+        ASSERT_NOT_REACHED();
+        return 0;
+    }
     ExecState* exec = toJS(ctx);
-    
-    JSPropertyNameArrayRef propertyNames = new OpaqueJSPropertyNameArray();
-    jsObject->getPropertyNames(exec, propertyNames->array);
+    JSLockHolder locker(exec);
+
+    VM* vm = &exec->vm();
+
+    JSObject* jsObject = toJS(object);
+    JSPropertyNameArrayRef propertyNames = new OpaqueJSPropertyNameArray(vm);
+    PropertyNameArray array(vm);
+    jsObject->methodTable()->getPropertyNames(jsObject, exec, array, EnumerationMode());
+
+    size_t size = array.size();
+    propertyNames->array.reserveInitialCapacity(size);
+    for (size_t i = 0; i < size; ++i)
+        propertyNames->array.uncheckedAppend(JSRetainPtr<JSStringRef>(Adopt, OpaqueJSString::create(array[i].string()).leakRef()));
     
     return JSPropertyNameArrayRetain(propertyNames);
 }
 
 JSPropertyNameArrayRef JSPropertyNameArrayRetain(JSPropertyNameArrayRef array)
 {
-    JSLock lock;
     ++array->refCount;
     return array;
 }
 
 void JSPropertyNameArrayRelease(JSPropertyNameArrayRef array)
 {
-    JSLock lock;
-    if (--array->refCount == 0)
+    if (--array->refCount == 0) {
+        JSLockHolder locker(array->vm);
         delete array;
+    }
 }
 
 size_t JSPropertyNameArrayGetCount(JSPropertyNameArrayRef array)
@@ -361,14 +654,12 @@ size_t JSPropertyNameArrayGetCount(JSPropertyNameArrayRef array)
 
 JSStringRef JSPropertyNameArrayGetNameAtIndex(JSPropertyNameArrayRef array, size_t index)
 {
-    return toRef(array->array[static_cast<unsigned>(index)].ustring().rep());
+    return array->array[static_cast<unsigned>(index)].get();
 }
 
 void JSPropertyNameAccumulatorAddName(JSPropertyNameAccumulatorRef array, JSStringRef propertyName)
 {
-    JSLock lock;
     PropertyNameArray* propertyNames = toJS(array);
-    UString::Rep* rep = toJS(propertyName);
-    
-    propertyNames->add(Identifier(rep));
+    JSLockHolder locker(propertyNames->vm());
+    propertyNames->add(propertyName->identifier(propertyNames->vm()));
 }