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Side by Side Diff: sky/engine/bindings/core/v8/DOMDataStore.h

Issue 922053002: Remove unused V8 integration code in Sky (Closed) Base URL: git@github.com:domokit/mojo.git@master
Patch Set: Created 5 years, 10 months ago
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1 /*
2 * Copyright (C) 2009 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 SKY_ENGINE_BINDINGS_CORE_V8_DOMDATASTORE_H_
32 #define SKY_ENGINE_BINDINGS_CORE_V8_DOMDATASTORE_H_
33
34 #include "sky/engine/bindings/core/v8/DOMWrapperMap.h"
35 #include "sky/engine/bindings/core/v8/DOMWrapperWorld.h"
36 #include "sky/engine/bindings/core/v8/ScriptWrappable.h"
37 #include "sky/engine/bindings/core/v8/WrapperTypeInfo.h"
38 #include "sky/engine/wtf/Noncopyable.h"
39 #include "sky/engine/wtf/StdLibExtras.h"
40 #include "v8/include/v8.h"
41
42 namespace blink {
43
44 class Node;
45
46 class DOMDataStore {
47 WTF_MAKE_NONCOPYABLE(DOMDataStore);
48 public:
49 explicit DOMDataStore(bool isMainWorld);
50 ~DOMDataStore();
51
52 static DOMDataStore& current(v8::Isolate*);
53
54 // We can use a wrapper stored in a ScriptWrappable when we're in the main w orld.
55 // This method does the fast check if we're in the main world. If this metho d returns true,
56 // it is guaranteed that we're in the main world. On the other hand, if this method returns
57 // false, nothing is guaranteed (we might be in the main world).
58 template<typename T>
59 static bool canUseScriptWrappable(T* object)
60 {
61 return ScriptWrappable::wrapperCanBeStoredInObject(object);
62 }
63
64 static bool canUseScriptWrappableNonTemplate(Node* object)
65 {
66 return true;
67 }
68
69 template<typename V8T, typename T, typename Wrappable>
70 static bool setReturnValueFromWrapperFast(v8::ReturnValue<v8::Value> returnV alue, T* object, v8::Local<v8::Object> holder, Wrappable* wrappable)
71 {
72 if (canUseScriptWrappable(object)) {
73 ScriptWrappable::assertWrapperSanity<V8T, T>(object, object);
74 return ScriptWrappable::fromObject(object)->setReturnValue(returnVal ue);
75 }
76 // The second fastest way to check if we're in the main world is to chec k if
77 // the wrappable's wrapper is the same as the holder.
78 // FIXME: Investigate if it's worth having this check for performance.
79 if (holderContainsWrapper(holder, wrappable)) {
80 if (ScriptWrappable::wrapperCanBeStoredInObject(object)) {
81 ScriptWrappable::assertWrapperSanity<V8T, T>(object, object);
82 return ScriptWrappable::fromObject(object)->setReturnValue(retur nValue);
83 }
84 return DOMWrapperWorld::mainWorld().domDataStore().m_wrapperMap.setR eturnValueFrom(returnValue, V8T::toScriptWrappableBase(object));
85 }
86 return current(returnValue.GetIsolate()).template setReturnValueFrom<V8T >(returnValue, object);
87 }
88
89 template<typename V8T, typename T>
90 static bool setReturnValueFromWrapper(v8::ReturnValue<v8::Value> returnValue , T* object)
91 {
92 if (canUseScriptWrappable(object)) {
93 ScriptWrappable::assertWrapperSanity<V8T, T>(object, object);
94 return ScriptWrappable::fromObject(object)->setReturnValue(returnVal ue);
95 }
96 return current(returnValue.GetIsolate()).template setReturnValueFrom<V8T >(returnValue, object);
97 }
98
99 template<typename V8T, typename T>
100 static bool setReturnValueFromWrapperForMainWorld(v8::ReturnValue<v8::Value> returnValue, T* object)
101 {
102 if (ScriptWrappable::wrapperCanBeStoredInObject(object))
103 return ScriptWrappable::fromObject(object)->setReturnValue(returnVal ue);
104 return DOMWrapperWorld::mainWorld().domDataStore().m_wrapperMap.setRetur nValueFrom(returnValue, V8T::toScriptWrappableBase(object));
105 }
106
107 template<typename V8T, typename T>
108 static v8::Handle<v8::Object> getWrapper(T* object, v8::Isolate* isolate)
109 {
110 if (canUseScriptWrappable(object)) {
111 v8::Handle<v8::Object> result = ScriptWrappable::fromObject(object)- >newLocalWrapper(isolate);
112 // Security: always guard against malicious tampering.
113 ScriptWrappable::assertWrapperSanity<V8T, T>(result, object);
114 return result;
115 }
116 return current(isolate).template get<V8T>(object, isolate);
117 }
118
119 static v8::Handle<v8::Object> getWrapperNonTemplate(ScriptWrappableBase* obj ect, v8::Isolate* isolate)
120 {
121 return current(isolate).getNonTemplate(object, isolate);
122 }
123
124 static v8::Handle<v8::Object> getWrapperNonTemplate(ScriptWrappable* object, v8::Isolate* isolate)
125 {
126 return current(isolate).getNonTemplate(object, isolate);
127 }
128
129 static v8::Handle<v8::Object> getWrapperNonTemplate(Node* node, v8::Isolate* isolate)
130 {
131 if (canUseScriptWrappableNonTemplate(node)) {
132 v8::Handle<v8::Object> result = ScriptWrappable::fromObject(node)->n ewLocalWrapper(isolate);
133 // Security: always guard against malicious tampering.
134 ScriptWrappable::fromObject(node)->assertWrapperSanity(result);
135 return result;
136 }
137 return current(isolate).getNonTemplate(ScriptWrappable::fromObject(node) , isolate);
138 }
139
140 template<typename V8T, typename T>
141 static void setWrapperReference(const v8::Persistent<v8::Object>& parent, T* child, v8::Isolate* isolate)
142 {
143 if (canUseScriptWrappable(child)) {
144 ScriptWrappable::assertWrapperSanity<V8T, T>(child, child);
145 ScriptWrappable::fromObject(child)->setReference(parent, isolate);
146 return;
147 }
148 current(isolate).template setReference<V8T>(parent, child, isolate);
149 }
150
151 template<typename V8T, typename T>
152 static void setWrapper(T* object, v8::Handle<v8::Object> wrapper, v8::Isolat e* isolate, const WrapperTypeInfo* wrapperTypeInfo)
153 {
154 if (canUseScriptWrappable(object)) {
155 ScriptWrappable::fromObject(object)->setWrapper(wrapper, isolate, wr apperTypeInfo);
156 return;
157 }
158 return current(isolate).template set<V8T>(object, wrapper, isolate, wrap perTypeInfo);
159 }
160
161 static void setWrapperNonTemplate(ScriptWrappableBase* object, v8::Handle<v8 ::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo)
162 {
163 return current(isolate).setNonTemplate(object, wrapper, isolate, wrapper TypeInfo);
164 }
165
166 static void setWrapperNonTemplate(ScriptWrappable* object, v8::Handle<v8::Ob ject> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo)
167 {
168 return current(isolate).setNonTemplate(object, wrapper, isolate, wrapper TypeInfo);
169 }
170
171 static void setWrapperNonTemplate(Node* node, v8::Handle<v8::Object> wrapper , v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo)
172 {
173 if (canUseScriptWrappableNonTemplate(node)) {
174 ScriptWrappable::fromObject(node)->setWrapper(wrapper, isolate, wrap perTypeInfo);
175 return;
176 }
177 return current(isolate).setNonTemplate(ScriptWrappable::fromObject(node) , wrapper, isolate, wrapperTypeInfo);
178 }
179
180 template<typename V8T, typename T>
181 static bool containsWrapper(T* object, v8::Isolate* isolate)
182 {
183 return current(isolate).template containsWrapper<V8T>(object);
184 }
185
186 static bool containsWrapperNonTemplate(ScriptWrappableBase* object, v8::Isol ate* isolate)
187 {
188 return current(isolate).containsWrapperNonTemplate(object);
189 }
190
191 static bool containsWrapperNonTemplate(ScriptWrappable* object, v8::Isolate* isolate)
192 {
193 return current(isolate).containsWrapperNonTemplate(object);
194 }
195
196 template<typename V8T, typename T>
197 v8::Handle<v8::Object> get(T* object, v8::Isolate* isolate)
198 {
199 if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld )
200 return ScriptWrappable::fromObject(object)->newLocalWrapper(isolate) ;
201 return m_wrapperMap.newLocal(V8T::toScriptWrappableBase(object), isolate );
202 }
203
204 v8::Handle<v8::Object> getNonTemplate(ScriptWrappableBase* object, v8::Isola te* isolate)
205 {
206 return m_wrapperMap.newLocal(object->toScriptWrappableBase(), isolate);
207 }
208
209 v8::Handle<v8::Object> getNonTemplate(ScriptWrappable* object, v8::Isolate* isolate)
210 {
211 if (m_isMainWorld)
212 return object->newLocalWrapper(isolate);
213 return m_wrapperMap.newLocal(object->toScriptWrappableBase(), isolate);
214 }
215
216 template<typename V8T, typename T>
217 void setReference(const v8::Persistent<v8::Object>& parent, T* child, v8::Is olate* isolate)
218 {
219 if (ScriptWrappable::wrapperCanBeStoredInObject(child) && m_isMainWorld) {
220 ScriptWrappable::fromObject(child)->setReference(parent, isolate);
221 return;
222 }
223 m_wrapperMap.setReference(parent, V8T::toScriptWrappableBase(child), iso late);
224 }
225
226 template<typename V8T, typename T>
227 bool setReturnValueFrom(v8::ReturnValue<v8::Value> returnValue, T* object)
228 {
229 if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld )
230 return ScriptWrappable::fromObject(object)->setReturnValue(returnVal ue);
231 return m_wrapperMap.setReturnValueFrom(returnValue, V8T::toScriptWrappab leBase(object));
232 }
233
234 template<typename V8T, typename T>
235 bool containsWrapper(T* object)
236 {
237 if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld )
238 return ScriptWrappable::fromObject(object)->containsWrapper();
239 return m_wrapperMap.containsKey(V8T::toScriptWrappableBase(object));
240 }
241
242 bool containsWrapperNonTemplate(ScriptWrappableBase* object)
243 {
244 return m_wrapperMap.containsKey(object->toScriptWrappableBase());
245 }
246
247 bool containsWrapperNonTemplate(ScriptWrappable* object)
248 {
249 if (m_isMainWorld)
250 return object->containsWrapper();
251 return m_wrapperMap.containsKey(object->toScriptWrappableBase());
252 }
253
254 private:
255 template<typename V8T, typename T>
256 void set(T* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, co nst WrapperTypeInfo* wrapperTypeInfo)
257 {
258 ASSERT(object);
259 ASSERT(!wrapper.IsEmpty());
260 if (ScriptWrappable::wrapperCanBeStoredInObject(object) && m_isMainWorld ) {
261 ScriptWrappable::fromObject(object)->setWrapper(wrapper, isolate, wr apperTypeInfo);
262 return;
263 }
264 m_wrapperMap.set(V8T::toScriptWrappableBase(object), wrapper, wrapperTyp eInfo);
265 }
266
267 void setNonTemplate(ScriptWrappableBase* object, v8::Handle<v8::Object> wrap per, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo)
268 {
269 ASSERT(object);
270 ASSERT(!wrapper.IsEmpty());
271 m_wrapperMap.set(object->toScriptWrappableBase(), wrapper, wrapperTypeIn fo);
272 }
273
274 void setNonTemplate(ScriptWrappable* object, v8::Handle<v8::Object> wrapper, v8::Isolate* isolate, const WrapperTypeInfo* wrapperTypeInfo)
275 {
276 ASSERT(object);
277 ASSERT(!wrapper.IsEmpty());
278 if (m_isMainWorld) {
279 ScriptWrappable::fromObject(object)->setWrapper(wrapper, isolate, wr apperTypeInfo);
280 return;
281 }
282 m_wrapperMap.set(object->toScriptWrappableBase(), wrapper, wrapperTypeIn fo);
283 }
284
285 static bool holderContainsWrapper(v8::Local<v8::Object>, void*)
286 {
287 return false;
288 }
289
290 static bool holderContainsWrapper(v8::Local<v8::Object> holder, ScriptWrappa ble* wrappable)
291 {
292 // Verify our assumptions about the main world.
293 ASSERT(wrappable);
294 ASSERT(!wrappable->containsWrapper() || !wrappable->isEqualTo(holder) || current(v8::Isolate::GetCurrent()).m_isMainWorld);
295 return wrappable->isEqualTo(holder);
296 }
297
298 bool m_isMainWorld;
299 DOMWrapperMap<ScriptWrappableBase> m_wrapperMap;
300 };
301
302 template <>
303 inline void DOMWrapperMap<ScriptWrappableBase>::PersistentValueMapTraits::Dispos e(
304 v8::Isolate* isolate,
305 v8::UniquePersistent<v8::Object> value,
306 ScriptWrappableBase* key)
307 {
308 RELEASE_ASSERT(!value.IsEmpty()); // See crbug.com/368095.
309 releaseObject(v8::Local<v8::Object>::New(isolate, value));
310 }
311
312 } // namespace blink
313
314 #endif // SKY_ENGINE_BINDINGS_CORE_V8_DOMDATASTORE_H_
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