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 40namespace WebCore { 41 42typedef int ExceptionCode; 43 44class ExceptionState { 45 WTF_MAKE_NONCOPYABLE(ExceptionState); 46public: 47 enum Context { 48 ConstructionContext, 49 ExecutionContext, 50 DeletionContext, 51 GetterContext, 52 SetterContext, 53 EnumerationContext, 54 QueryContext, 55 IndexedGetterContext, 56 IndexedSetterContext, 57 IndexedDeletionContext, 58 UnknownContext, // FIXME: Remove this once we've flipped over to the new API. 59 }; 60 61 ExceptionState(Context context, const char* propertyName, const char* interfaceName, const v8::Handle<v8::Object>& creationContext, v8::Isolate* isolate) 62 : m_code(0) 63 , m_context(context) 64 , m_propertyName(propertyName) 65 , m_interfaceName(interfaceName) 66 , m_creationContext(creationContext) 67 , m_isolate(isolate) { } 68 69 ExceptionState(Context context, const char* interfaceName, const v8::Handle<v8::Object>& creationContext, v8::Isolate* isolate) 70 : m_code(0) 71 , m_context(context) 72 , m_propertyName(0) 73 , m_interfaceName(interfaceName) 74 , m_creationContext(creationContext) 75 , m_isolate(isolate) { ASSERT(m_context == ConstructionContext || m_context == EnumerationContext || m_context == IndexedSetterContext || m_context == IndexedGetterContext || m_context == IndexedDeletionContext); } 76 77 virtual void throwDOMException(const ExceptionCode&, const String& message); 78 virtual void throwTypeError(const String& message); 79 virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String()); 80 81 bool hadException() const { return !m_exception.isEmpty() || m_code; } 82 void clearException(); 83 84 ExceptionCode code() const { return m_code; } 85 const String& message() const { return m_message; } 86 87 bool throwIfNeeded() 88 { 89 if (!hadException()) 90 return false; 91 throwException(); 92 return true; 93 } 94 95 Context context() const { return m_context; } 96 const char* propertyName() const { return m_propertyName; } 97 const char* interfaceName() const { return m_interfaceName; } 98 99 void rethrowV8Exception(v8::Handle<v8::Value> value) 100 { 101 setException(value); 102 } 103 104protected: 105 ExceptionCode m_code; 106 Context m_context; 107 String m_message; 108 const char* m_propertyName; 109 const char* m_interfaceName; 110 111private: 112 void setException(v8::Handle<v8::Value>); 113 void throwException(); 114 115 String addExceptionContext(const String&) const; 116 117 ScopedPersistent<v8::Value> m_exception; 118 v8::Handle<v8::Object> m_creationContext; 119 v8::Isolate* m_isolate; 120}; 121 122// Used if exceptions can/should not be directly thrown. 123class NonThrowableExceptionState FINAL : public ExceptionState { 124public: 125 NonThrowableExceptionState(): ExceptionState(ExceptionState::UnknownContext, 0, 0, v8::Handle<v8::Object>(), v8::Isolate::GetCurrent()) { } 126 virtual void throwDOMException(const ExceptionCode&, const String& message) OVERRIDE; 127 virtual void throwTypeError(const String& message = String()) OVERRIDE; 128 virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String()) OVERRIDE; 129}; 130 131// Used if any exceptions thrown are ignorable. 132class TrackExceptionState FINAL : public ExceptionState { 133public: 134 TrackExceptionState(): ExceptionState(ExceptionState::UnknownContext, 0, 0, v8::Handle<v8::Object>(), v8::Isolate::GetCurrent()) { } 135 virtual void throwDOMException(const ExceptionCode&, const String& message) OVERRIDE; 136 virtual void throwTypeError(const String& message = String()) OVERRIDE; 137 virtual void throwSecurityError(const String& sanitizedMessage, const String& unsanitizedMessage = String()) OVERRIDE; 138}; 139 140} // namespace WebCore 141 142#endif // ExceptionState_h 143