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 <wtf/Platform.h>
28 #include "JSCallbackFunction.h"
29
30 #include "APIShims.h"
31 #include "APICast.h"
32 #include "CodeBlock.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
39 namespace JSC {
40
41 ASSERT_CLASS_FITS_IN_CELL(JSCallbackFunction);
42
43 const ClassInfo JSCallbackFunction::info = { "CallbackFunction", &InternalFunction::info, 0, 0 };
44
JSCallbackFunction(ExecState * exec,JSObjectCallAsFunctionCallback callback,const Identifier & name)45 JSCallbackFunction::JSCallbackFunction(ExecState* exec, JSObjectCallAsFunctionCallback callback, const Identifier& name)
46 : InternalFunction(&exec->globalData(), exec->lexicalGlobalObject()->callbackFunctionStructure(), name)
47 , m_callback(callback)
48 {
49 }
50
call(ExecState * exec,JSObject * functionObject,JSValue thisValue,const ArgList & args)51 JSValue JSCallbackFunction::call(ExecState* exec, JSObject* functionObject, JSValue thisValue, const ArgList& args)
52 {
53 JSContextRef execRef = toRef(exec);
54 JSObjectRef functionRef = toRef(functionObject);
55 JSObjectRef thisObjRef = toRef(thisValue.toThisObject(exec));
56
57 int argumentCount = static_cast<int>(args.size());
58 Vector<JSValueRef, 16> arguments(argumentCount);
59 for (int i = 0; i < argumentCount; i++)
60 arguments[i] = toRef(exec, args.at(i));
61
62 JSValueRef exception = 0;
63 JSValueRef result;
64 {
65 APICallbackShim callbackShim(exec);
66 result = static_cast<JSCallbackFunction*>(functionObject)->m_callback(execRef, functionRef, thisObjRef, argumentCount, arguments.data(), &exception);
67 }
68 if (exception)
69 exec->setException(toJS(exec, exception));
70
71 return toJS(exec, result);
72 }
73
getCallData(CallData & callData)74 CallType JSCallbackFunction::getCallData(CallData& callData)
75 {
76 callData.native.function = call;
77 return CallTypeHost;
78 }
79
80 } // namespace JSC
81