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| 1 // Copyright (c) 2008, Google Inc. | 1 // Copyright (c) 2008, Google Inc. |
| 2 // All rights reserved. | 2 // All rights reserved. |
| 3 // | 3 // |
| 4 // Redistribution and use in source and binary forms, with or without | 4 // Redistribution and use in source and binary forms, with or without |
| 5 // modification, are permitted provided that the following conditions are | 5 // modification, are permitted provided that the following conditions are |
| 6 // met: | 6 // met: |
| 7 // | 7 // |
| 8 // * Redistributions of source code must retain the above copyright | 8 // * Redistributions of source code must retain the above copyright |
| 9 // notice, this list of conditions and the following disclaimer. | 9 // notice, this list of conditions and the following disclaimer. |
| 10 // * Redistributions in binary form must reproduce the above | 10 // * Redistributions in binary form must reproduce the above |
| (...skipping 16 matching lines...) Expand all Loading... |
| 27 // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | 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. | 28 // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
| 29 | 29 |
| 30 #include "config.h" | 30 #include "config.h" |
| 31 #include "ExceptionContext.h" | 31 #include "ExceptionContext.h" |
| 32 | 32 |
| 33 #include "Node.h" | 33 #include "Node.h" |
| 34 | 34 |
| 35 namespace WebCore { | 35 namespace WebCore { |
| 36 | 36 |
| 37 // Unlike JSC, which stores exceptions in ExecState that is accessible from | 37 ExceptionContext::ExceptionContext(Node*) |
| 38 // ScriptController that is retrievable from Node*, V8 uses static chain of | 38 : m_data() |
| 39 // handlers (encapsulated as v8::TryCatch and here as ExceptionCatcher) | |
| 40 // to track exceptions, so it has no need for Node*. | |
| 41 ExceptionContext::ExceptionContext(Node* node) | |
| 42 { | 39 { |
| 43 } | 40 } |
| 44 | 41 |
| 45 ExceptionContext::ExceptionContext() | |
| 46 : m_exception() | |
| 47 , m_exceptionCatcher(0) | |
| 48 { | |
| 49 } | |
| 50 | |
| 51 void ExceptionContext::setExceptionCatcher(ExceptionCatcher* exceptionCatcher) | |
| 52 { | |
| 53 if (m_exceptionCatcher && exceptionCatcher) | |
| 54 m_exceptionCatcher->detachContext(); | |
| 55 | |
| 56 m_exceptionCatcher = exceptionCatcher; | |
| 57 } | |
| 58 | |
| 59 bool ExceptionContext::hadException() | 42 bool ExceptionContext::hadException() |
| 60 { | 43 { |
| 61 if (m_exceptionCatcher) | 44 return !m_data.IsEmpty(); |
| 62 m_exceptionCatcher->updateContext(); | |
| 63 | |
| 64 return !m_exception.IsEmpty(); | |
| 65 } | 45 } |
| 66 | 46 |
| 67 JSException ExceptionContext::exception() const | |
| 68 { | |
| 69 return m_exception; | |
| 70 } | |
| 71 | |
| 72 JSException ExceptionContext::noException() | |
| 73 { | |
| 74 return v8::Local<v8::Value>(); | |
| 75 } | |
| 76 | |
| 77 ExceptionCatcher::ExceptionCatcher(ExceptionContext* exceptionContext) | |
| 78 : m_context(exceptionContext) | |
| 79 , m_catcher() | |
| 80 { | |
| 81 exceptionContext->setExceptionCatcher(this); | |
| 82 } | |
| 83 | |
| 84 void ExceptionCatcher::detachContext() | |
| 85 { | |
| 86 m_context = 0; | |
| 87 } | |
| 88 | |
| 89 void ExceptionCatcher::updateContext() | |
| 90 { | |
| 91 ASSERT(m_context); | |
| 92 | |
| 93 if (m_catcher.HasCaught()) | |
| 94 m_context->setException(m_catcher.Exception()); | |
| 95 else | |
| 96 m_context->setException(ExceptionContext::noException()); | |
| 97 } | |
| 98 | |
| 99 ExceptionCatcher::~ExceptionCatcher() | |
| 100 { | |
| 101 if (!m_context) | |
| 102 return; | |
| 103 | |
| 104 updateContext(); | |
| 105 m_context->setExceptionCatcher(0); | |
| 106 } | |
| 107 | 47 |
| 108 } // namespace WebCore | 48 } // namespace WebCore |
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