2 * Copyright (C) 2012 Google Inc. All rights reserved.
4 * Redistribution and use in source and binary forms, with or without
5 * modification, are permitted provided that the following conditions are
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
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.
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.
31 #ifndef V8PerContextData_h
32 #define V8PerContextData_h
34 #include "bindings/core/v8/CustomElementBinding.h"
35 #include "bindings/core/v8/ScopedPersistent.h"
36 #include "bindings/core/v8/V8PersistentValueMap.h"
37 #include "bindings/core/v8/WrapperTypeInfo.h"
38 #include "gin/public/context_holder.h"
39 #include "gin/public/gin_embedders.h"
40 #include "wtf/HashMap.h"
41 #include "wtf/PassOwnPtr.h"
42 #include "wtf/Vector.h"
43 #include "wtf/text/AtomicString.h"
44 #include "wtf/text/AtomicStringHash.h"
49 class CustomElementDefinition;
50 class V8DOMActivityLogger;
51 class V8PerContextData;
53 typedef WTF::Vector<V8NPObject*> V8NPObjectVector;
54 typedef WTF::HashMap<int, V8NPObjectVector> V8NPObjectMap;
56 enum V8ContextEmbedderDataField {
57 v8ContextDebugIdIndex = static_cast<int>(gin::kDebugIdIndex),
58 v8ContextPerContextDataIndex = static_cast<int>(gin::kPerContextDataStartIndex + gin::kEmbedderBlink),
61 class V8PerContextData {
63 static PassOwnPtr<V8PerContextData> create(v8::Handle<v8::Context>);
65 static V8PerContextData* from(v8::Handle<v8::Context>);
69 v8::Handle<v8::Context> context() { return m_context.newLocal(m_isolate); }
71 // To create JS Wrapper objects, we create a cache of a 'boiler plate'
72 // object, and then simply Clone that object each time we need a new one.
73 // This is faster than going through the full object creation process.
74 v8::Local<v8::Object> createWrapperFromCache(const WrapperTypeInfo* type)
76 v8::Local<v8::Object> boilerplate = m_wrapperBoilerplates.Get(type);
77 return !boilerplate.IsEmpty() ? boilerplate->Clone() : createWrapperFromCacheSlowCase(type);
80 v8::Local<v8::Function> constructorForType(const WrapperTypeInfo* type)
82 v8::Local<v8::Function> function = m_constructorMap.Get(type);
83 return (!function.IsEmpty()) ? function : constructorForTypeSlowCase(type);
86 v8::Local<v8::Object> prototypeForType(const WrapperTypeInfo*);
88 V8NPObjectMap* v8NPObjectMap() { return &m_v8NPObjectMap; }
90 void addCustomElementBinding(CustomElementDefinition*, PassOwnPtr<CustomElementBinding>);
91 void clearCustomElementBinding(CustomElementDefinition*);
92 CustomElementBinding* customElementBinding(CustomElementDefinition*);
94 V8DOMActivityLogger* activityLogger() const { return m_activityLogger; }
95 void setActivityLogger(V8DOMActivityLogger* activityLogger) { m_activityLogger = activityLogger; }
97 v8::Handle<v8::Value> compiledPrivateScript(String);
98 void setCompiledPrivateScript(String, v8::Handle<v8::Value>);
101 V8PerContextData(v8::Handle<v8::Context>);
103 v8::Local<v8::Object> createWrapperFromCacheSlowCase(const WrapperTypeInfo*);
104 v8::Local<v8::Function> constructorForTypeSlowCase(const WrapperTypeInfo*);
106 v8::Isolate* m_isolate;
108 // For each possible type of wrapper, we keep a boilerplate object.
109 // The boilerplate is used to create additional wrappers of the same type.
110 typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Object, false> WrapperBoilerplateMap;
111 WrapperBoilerplateMap m_wrapperBoilerplates;
113 typedef V8PersistentValueMap<const WrapperTypeInfo*, v8::Function, false> ConstructorMap;
114 ConstructorMap m_constructorMap;
116 V8NPObjectMap m_v8NPObjectMap;
118 OwnPtr<gin::ContextHolder> m_contextHolder;
120 ScopedPersistent<v8::Context> m_context;
121 ScopedPersistent<v8::Value> m_errorPrototype;
123 typedef WTF::HashMap<CustomElementDefinition*, OwnPtr<CustomElementBinding> > CustomElementBindingMap;
124 OwnPtr<CustomElementBindingMap> m_customElementBindings;
126 // This is owned by a static hash map in V8DOMActivityLogger.
127 V8DOMActivityLogger* m_activityLogger;
129 V8PersistentValueMap<String, v8::Value, false> m_compiledPrivateScript;
132 class V8PerContextDebugData {
134 static bool setContextDebugData(v8::Handle<v8::Context>, const char* worldName, int debugId);
135 static int contextDebugId(v8::Handle<v8::Context>);
140 #endif // V8PerContextData_h