1 /* 2 * Copyright (C) 2013 Google 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 are 6 * met: 7 * 8 * * Redistributions of source code must retain the above copyright 9 * notice, this list of conditions and the following disclaimer. 10 * * Redistributions in binary form must reproduce the above 11 * copyright notice, this list of conditions and the following disclaimer 12 * in the documentation and/or other materials provided with the 13 * distribution. 14 * * Neither the name of Google Inc. nor the names of its 15 * contributors may be used to endorse or promote products derived from 16 * this software without specific prior written permission. 17 * 18 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS 19 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT 20 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR 21 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT 22 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, 23 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT 24 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, 25 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY 26 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 27 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE 28 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 29 */ 30 31 #ifndef ExceptionState_h 32 #define ExceptionState_h 33 34 #include "bindings/v8/ScopedPersistent.h" 35 #include "bindings/v8/V8ThrowException.h" 36 #include "wtf/Noncopyable.h" 37 #include "wtf/text/WTFString.h" 38 #include <v8.h> 39 40 namespace WebCore { 41 42 typedef int ExceptionCode; 43 44 class ExceptionState { 45 WTF_MAKE_NONCOPYABLE(ExceptionState); 46 public: 47 explicit ExceptionState(v8::Isolate* isolate) 48 : m_code(0) 49 , m_isolate(isolate) { } 50 51 virtual void throwDOMException(const ExceptionCode&, const String& message = String()); 52 virtual void throwTypeError(const String& message = String()); 53 54 bool hadException() const { return !m_exception.isEmpty() || m_code; } 55 void clearException(); 56 57 ExceptionCode code() { return m_code; } 58 59 bool throwIfNeeded() 60 { 61 if (m_exception.isEmpty()) { 62 if (!m_code) 63 return false; 64 throwDOMException(m_code); 65 } 66 67 V8ThrowException::throwError(m_exception.newLocal(m_isolate)); 68 return true; 69 } 70 71 protected: 72 ExceptionCode m_code; 73 74 private: 75 void setException(v8::Handle<v8::Value>); 76 77 ScopedPersistent<v8::Value> m_exception; 78 v8::Isolate* m_isolate; 79 }; 80 81 class TrackExceptionState : public ExceptionState { 82 public: 83 TrackExceptionState(): ExceptionState(0) { } 84 virtual void throwDOMException(const ExceptionCode&, const String& message = String()) OVERRIDE FINAL; 85 virtual void throwTypeError(const String& message = String()) OVERRIDE FINAL; 86 }; 87 88 } // namespace WebCore 89 90 #endif // ExceptionState_h 91