1/*
2 * Copyright (C) 2006, 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 "JSCallbackFunction.h"
28
29#include "APIShims.h"
30#include "APICast.h"
31#include "CodeBlock.h"
32#include "ExceptionHelpers.h"
33#include "JSFunction.h"
34#include "FunctionPrototype.h"
35#include <runtime/JSGlobalObject.h>
36#include <runtime/JSLock.h>
37#include <wtf/Vector.h>
38
39namespace JSC {
40
41ASSERT_CLASS_FITS_IN_CELL(JSCallbackFunction);
42
43const ClassInfo JSCallbackFunction::s_info = { "CallbackFunction", &InternalFunction::s_info, 0, 0 };
44
45JSCallbackFunction::JSCallbackFunction(ExecState* exec, JSGlobalObject* globalObject, JSObjectCallAsFunctionCallback callback, const Identifier& name)
46    : InternalFunction(&exec->globalData(), globalObject, globalObject->callbackFunctionStructure(), name)
47    , m_callback(callback)
48{
49    ASSERT(inherits(&s_info));
50}
51
52EncodedJSValue JSCallbackFunction::call(ExecState* exec)
53{
54    JSContextRef execRef = toRef(exec);
55    JSObjectRef functionRef = toRef(exec->callee());
56    JSObjectRef thisObjRef = toRef(exec->hostThisValue().toThisObject(exec));
57
58    int argumentCount = static_cast<int>(exec->argumentCount());
59    Vector<JSValueRef, 16> arguments(argumentCount);
60    for (int i = 0; i < argumentCount; i++)
61        arguments[i] = toRef(exec, exec->argument(i));
62
63    JSValueRef exception = 0;
64    JSValueRef result;
65    {
66        APICallbackShim callbackShim(exec);
67        result = static_cast<JSCallbackFunction*>(toJS(functionRef))->m_callback(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
68    }
69    if (exception)
70        throwError(exec, toJS(exec, exception));
71
72    return JSValue::encode(toJS(exec, result));
73}
74
75CallType JSCallbackFunction::getCallData(CallData& callData)
76{
77    callData.native.function = call;
78    return CallTypeHost;
79}
80
81} // namespace JSC
82