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| 1 /* | |
| 2 * Copyright (C) 2014 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 V8PersistentValueMap_h | |
| 32 #define V8PersistentValueMap_h | |
| 33 | |
| 34 #include "wtf/HashMap.h" | |
| 35 #include <v8-util.h> | |
| 36 #include <v8.h> | |
| 37 | |
| 38 namespace WebCore { | |
| 39 | |
| 40 /** | |
| 41 * A Traits class for v8::PersistentValueMap that uses wtf/HashMap as a | |
| 42 * backing store. | |
| 43 * | |
| 44 * The parameter is_weak will determine whether the references are 'weak'. | |
| 45 * If so, entries will be removed from the map as the weak references are | |
| 46 * collected. | |
| 47 */ | |
| 48 template<class KeyType, class ValueType, bool is_weak> | |
| 49 class V8PersistentValueMapTraits { | |
| 50 public: | |
| 51 // Map traits: | |
| 52 typedef HashMap<KeyType, v8::PersistentContainerValue> Impl; | |
| 53 typedef typename Impl::iterator Iterator; | |
| 54 static size_t Size(const Impl* impl) { return impl->size(); } | |
| 55 static bool Empty(Impl* impl) { return impl->isEmpty(); } | |
| 56 static void Swap(Impl& impl, Impl& other) { impl.swap(other); } | |
| 57 static Iterator Begin(Impl* impl) { return impl->begin(); } | |
| 58 static Iterator End(Impl* impl) { return impl->end(); } | |
| 59 static v8::PersistentContainerValue Value(Iterator& iter) | |
| 60 { | |
| 61 return iter->value; | |
| 62 } | |
| 63 static KeyType Key(Iterator& iter) { return iter->key; } | |
| 64 static v8::PersistentContainerValue Set( | |
| 65 Impl* impl, KeyType key, v8::PersistentContainerValue value) | |
| 66 { | |
| 67 v8::PersistentContainerValue oldValue = Get(impl, key); | |
| 68 impl->add(key, value); | |
| 69 return oldValue; | |
| 70 } | |
| 71 static v8::PersistentContainerValue Get(const Impl* impl, KeyType key) | |
| 72 { | |
| 73 return impl->get(key); | |
| 74 } | |
| 75 | |
| 76 static v8::PersistentContainerValue Remove(Impl* impl, KeyType key) | |
| 77 { | |
| 78 return impl->take(key); | |
| 79 } | |
| 80 | |
| 81 // Weak traits: | |
| 82 static const v8::PersistentContainerCallbackType kCallbackType = is_weak ? v
8::kWeak : v8::kNotWeak; | |
| 83 typedef v8::PersistentValueMap<KeyType, ValueType, V8PersistentValueMapTrait
s<KeyType, ValueType, is_weak> > MapType; | |
| 84 | |
| 85 typedef void WeakCallbackDataType; | |
| 86 | |
| 87 static WeakCallbackDataType* WeakCallbackParameter(MapType* map, KeyType key
, const v8::Local<ValueType>& value) | |
| 88 { | |
| 89 return 0; | |
| 90 } | |
| 91 | |
| 92 static void DisposeCallbackData(WeakCallbackDataType* callbackData) | |
| 93 { | |
| 94 } | |
| 95 | |
| 96 static MapType* MapFromWeakCallbackData( | |
| 97 const v8::WeakCallbackData<ValueType, WeakCallbackDataType>& data) | |
| 98 { | |
| 99 return 0; | |
| 100 } | |
| 101 | |
| 102 static KeyType KeyFromWeakCallbackData( | |
| 103 const v8::WeakCallbackData<ValueType, WeakCallbackDataType>& data) | |
| 104 { | |
| 105 return KeyType(); | |
| 106 } | |
| 107 | |
| 108 // Dispose traits: | |
| 109 static void Dispose(v8::Isolate* isolate, v8::UniquePersistent<ValueType> va
lue, KeyType key) { } | |
| 110 }; | |
| 111 | |
| 112 /** | |
| 113 * A map for safely storing persistent V8 values, based on | |
| 114 * v8::PersistentValueMap. | |
| 115 * | |
| 116 * If is_weak is set, values will be held weakly and map entries will be | |
| 117 * removed as their values are being collected. | |
| 118 */ | |
| 119 template<class KeyType, class ValueType, bool is_weak = true> | |
| 120 class V8PersistentValueMap : public v8::PersistentValueMap<KeyType, ValueType, V
8PersistentValueMapTraits<KeyType, ValueType, is_weak> > { | |
| 121 public: | |
| 122 typedef V8PersistentValueMapTraits<KeyType, ValueType, is_weak> Traits; | |
| 123 explicit V8PersistentValueMap(v8::Isolate* isolate) : v8::PersistentValueMap
<KeyType, ValueType, Traits>(isolate) { } | |
| 124 }; | |
| 125 | |
| 126 } // namespace WebCore | |
| 127 | |
| 128 #endif // V8PersistentValueMap_h | |
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Chromium Code Reviews
Issue 351423002:
Moved files under Source/bindings/v8 to Source/bindings/core/v8. (Closed)
Base URL: svn://svn.chromium.org/blink/trunk