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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 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* interf
aceName, 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_cont
ext == EnumerationContext || m_context == IndexedSetterContext || m_context == I
ndexedGetterContext || 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 | |
104 protected: | |
105 ExceptionCode m_code; | |
106 Context m_context; | |
107 String m_message; | |
108 const char* m_propertyName; | |
109 const char* m_interfaceName; | |
110 | |
111 private: | |
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. | |
123 class NonThrowableExceptionState FINAL : public ExceptionState { | |
124 public: | |
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. | |
132 class TrackExceptionState FINAL : public ExceptionState { | |
133 public: | |
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 | |
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