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/Error.h>
32 #include <runtime/JSGlobalObject.h>
33 #include <runtime/JSLock.h>
34 #include <runtime/ObjectPrototype.h>
35 #include <wtf/Vector.h>
36
37 namespace JSC {
38
39 const ClassInfo JSCallbackConstructor::s_info = { "CallbackConstructor", &JSObjectWithGlobalObject::s_info, 0, 0 };
40
JSCallbackConstructor(JSGlobalObject * globalObject,Structure * structure,JSClassRef jsClass,JSObjectCallAsConstructorCallback callback)41 JSCallbackConstructor::JSCallbackConstructor(JSGlobalObject* globalObject, Structure* structure, JSClassRef jsClass, JSObjectCallAsConstructorCallback callback)
42 : JSObjectWithGlobalObject(globalObject, structure)
43 , m_class(jsClass)
44 , m_callback(callback)
45 {
46 ASSERT(inherits(&s_info));
47 if (m_class)
48 JSClassRetain(jsClass);
49 }
50
~JSCallbackConstructor()51 JSCallbackConstructor::~JSCallbackConstructor()
52 {
53 if (m_class)
54 JSClassRelease(m_class);
55 }
56
constructJSCallback(ExecState * exec)57 static EncodedJSValue JSC_HOST_CALL constructJSCallback(ExecState* exec)
58 {
59 JSObject* constructor = exec->callee();
60 JSContextRef ctx = toRef(exec);
61 JSObjectRef constructorRef = toRef(constructor);
62
63 JSObjectCallAsConstructorCallback callback = static_cast<JSCallbackConstructor*>(constructor)->callback();
64 if (callback) {
65 int argumentCount = static_cast<int>(exec->argumentCount());
66 Vector<JSValueRef, 16> arguments(argumentCount);
67 for (int i = 0; i < argumentCount; i++)
68 arguments[i] = toRef(exec, exec->argument(i));
69
70 JSValueRef exception = 0;
71 JSObjectRef result;
72 {
73 APICallbackShim callbackShim(exec);
74 result = callback(ctx, constructorRef, argumentCount, arguments.data(), &exception);
75 }
76 if (exception)
77 throwError(exec, toJS(exec, exception));
78 return JSValue::encode(toJS(result));
79 }
80
81 return JSValue::encode(toJS(JSObjectMake(ctx, static_cast<JSCallbackConstructor*>(constructor)->classRef(), 0)));
82 }
83
getConstructData(ConstructData & constructData)84 ConstructType JSCallbackConstructor::getConstructData(ConstructData& constructData)
85 {
86 constructData.native.function = constructJSCallback;
87 return ConstructTypeHost;
88 }
89
90 } // namespace JSC
91