1 /*
2 * Copyright (C) 2006, 2007, 2008 Apple Inc. All rights reserved.
3 *
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions
6 * are met:
7 * 1. Redistributions of source code must retain the above copyright
8 * notice, this list of conditions and the following disclaimer.
9 * 2. Redistributions in binary form must reproduce the above copyright
10 * notice, this list of conditions and the following disclaimer in the
11 * documentation and/or other materials provided with the distribution.
12 *
13 * THIS SOFTWARE IS PROVIDED BY APPLE COMPUTER, INC. ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
15 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
16 * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE COMPUTER, INC. OR
17 * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
18 * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
19 * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
20 * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
21 * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
23 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25
26 #include "config.h"
27 #include "JSCallbackConstructor.h"
28
29 #include "APIShims.h"
30 #include "APICast.h"
31 #include <runtime/JSGlobalObject.h>
32 #include <runtime/JSLock.h>
33 #include <runtime/ObjectPrototype.h>
34 #include <wtf/Vector.h>
35
36 namespace JSC {
37
38 const ClassInfo JSCallbackConstructor::info = { "CallbackConstructor", 0, 0, 0 };
39
JSCallbackConstructor(NonNullPassRefPtr<Structure> structure,JSClassRef jsClass,JSObjectCallAsConstructorCallback callback)40 JSCallbackConstructor::JSCallbackConstructor(NonNullPassRefPtr<Structure> structure, JSClassRef jsClass, JSObjectCallAsConstructorCallback callback)
41 : JSObject(structure)
42 , m_class(jsClass)
43 , m_callback(callback)
44 {
45 if (m_class)
46 JSClassRetain(jsClass);
47 }
48
~JSCallbackConstructor()49 JSCallbackConstructor::~JSCallbackConstructor()
50 {
51 if (m_class)
52 JSClassRelease(m_class);
53 }
54
constructJSCallback(ExecState * exec,JSObject * constructor,const ArgList & args)55 static JSObject* constructJSCallback(ExecState* exec, JSObject* constructor, const ArgList& args)
56 {
57 JSContextRef ctx = toRef(exec);
58 JSObjectRef constructorRef = toRef(constructor);
59
60 JSObjectCallAsConstructorCallback callback = static_cast<JSCallbackConstructor*>(constructor)->callback();
61 if (callback) {
62 int argumentCount = static_cast<int>(args.size());
63 Vector<JSValueRef, 16> arguments(argumentCount);
64 for (int i = 0; i < argumentCount; i++)
65 arguments[i] = toRef(exec, args.at(i));
66
67 JSValueRef exception = 0;
68 JSObjectRef result;
69 {
70 APICallbackShim callbackShim(exec);
71 result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
72 }
73 if (exception)
74 exec->setException(toJS(exec, exception));
75 return toJS(result);
76 }
77
78 return toJS(JSObjectMake(ctx, static_cast<JSCallbackConstructor*>(constructor)->classRef(), 0));
79 }
80
getConstructData(ConstructData & constructData)81 ConstructType JSCallbackConstructor::getConstructData(ConstructData& constructData)
82 {
83 constructData.native.function = constructJSCallback;
84 return ConstructTypeHost;
85 }
86
87 } // namespace JSC
88