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 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
