1 /*
2 * Copyright (C) 2011 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 INC. AND ITS CONTRIBUTORS ``AS IS'' AND ANY
14 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
16 * DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS BE LIABLE FOR ANY
17 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
18 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON
20 * ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
21 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
22 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
23 */
24
25 #include "config.h"
26 #include "CallbackFunction.h"
27
28 #include "ExceptionCode.h"
29 #include "JSDOMBinding.h"
30 #include <runtime/CallData.h>
31
32 namespace WebCore {
33
checkFunctionOnlyCallback(JSC::ExecState * exec,JSC::JSValue value,CallbackAllowedValueFlags acceptedValues)34 bool checkFunctionOnlyCallback(JSC::ExecState* exec, JSC::JSValue value, CallbackAllowedValueFlags acceptedValues)
35 {
36 if (value.isUndefined() && (acceptedValues & CallbackAllowUndefined))
37 return false;
38
39 if (value.isNull() && (acceptedValues & CallbackAllowNull))
40 return false;
41
42 JSC::CallData callData;
43 if (getCallData(value, callData) == JSC::CallTypeNone) {
44 setDOMException(exec, TYPE_MISMATCH_ERR);
45 return false;
46 }
47
48 return true;
49 }
50
51 } // namespace WebCore
52