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| 1 // Copyright 2008, Google Inc. | |
| 2 // 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 // Javascript exception abstraction | |
| 31 | |
| 32 #ifndef ExceptionContext_h | |
| 33 #define ExceptionContext_h | |
| 34 | |
| 35 #include <wtf/Noncopyable.h> | |
| 36 #include "ScriptController.h" | |
| 37 | |
| 38 #if USE(JSC) | |
| 39 namespace JSC { | |
| 40 class ExecState; | |
| 41 } | |
| 42 #endif | |
| 43 | |
| 44 | |
| 45 namespace WebCore { | |
| 46 | |
| 47 class Node; | |
| 48 #if USE(V8) | |
| 49 class ExceptionCatcher; | |
| 50 #endif | |
| 51 | |
| 52 // Provides context of an exception. This class is an abstraction of JSC's | |
| 53 // ExecState. In V8, its purpose is to carry along the exceptions captured | |
| 54 // by the ExceptionCatcher. | |
| 55 class ExceptionContext : Noncopyable { | |
| 56 public: | |
| 57 ExceptionContext(Node*); | |
| 58 #if USE(V8) | |
| 59 ExceptionContext(); | |
| 60 #elif USE(JSC) | |
| 61 ExceptionContext(JSC::ExecState* exec) : m_exec(exec) {} | |
| 62 JSC::ExecState* exec() const { return m_exec; } | |
| 63 #endif | |
| 64 ~ExceptionContext() {} | |
| 65 | |
| 66 bool hadException(); | |
| 67 JSException exception() const; | |
| 68 | |
| 69 // Returns a non-exception code object. | |
| 70 static JSException noException(); | |
| 71 | |
| 72 private: | |
| 73 #if USE(V8) | |
| 74 friend class ExceptionCatcher; | |
| 75 void setException(JSException exception) { m_exception = exception; } | |
| 76 void setExceptionCatcher(ExceptionCatcher*); | |
| 77 JSException m_exception; | |
| 78 ExceptionCatcher* m_exceptionCatcher; | |
| 79 #elif USE(JSC) | |
| 80 JSC::ExecState* m_exec; | |
| 81 #endif | |
| 82 }; | |
| 83 | |
| 84 #if USE(V8) | |
| 85 // A wrapper around v8::TryCatch helper in order to facilitate updating | |
| 86 // ExceptionContext with the latest exceptions that may have occurred. | |
| 87 class ExceptionCatcher { | |
| 88 public: | |
| 89 ExceptionCatcher(ExceptionContext*); | |
| 90 ~ExceptionCatcher(); | |
| 91 void updateContext(); | |
| 92 void detachContext(); | |
| 93 | |
| 94 private: | |
| 95 ExceptionContext* m_context; | |
| 96 v8::TryCatch m_catcher; | |
| 97 }; | |
| 98 #endif | |
| 99 | |
| 100 } // namespace WebCore | |
| 101 | |
| 102 #endif // !defined(ExceptionContext_h) | |
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Chromium Code Reviews
Issue 9019:
Make ExceptionContext platform-independent using magic headers (2/2) (Closed)
Base URL: svn://chrome-svn/chrome/trunk/src/