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
37namespace JSC {
38
39const ClassInfo JSCallbackConstructor::s_info = { "CallbackConstructor", &JSObjectWithGlobalObject::s_info, 0, 0 };
40
41JSCallbackConstructor::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
51JSCallbackConstructor::~JSCallbackConstructor()
52{
53    if (m_class)
54        JSClassRelease(m_class);
55}
56
57static 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
84ConstructType JSCallbackConstructor::getConstructData(ConstructData& constructData)
85{
86    constructData.native.function = constructJSCallback;
87    return ConstructTypeHost;
88}
89
90} // namespace JSC
91