Move ScriptWrappable and dependencies to platform/bindings

third_party/WebKit/Source/bindings/core/v8/V8ValueCache.h

 /*
  * Copyright (C) 2009 Google Inc. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
  * are met:
  * 1. Redistributions of source code must retain the above copyright
  *    notice, this list of conditions and the following disclaimer.
  * 2. Redistributions in binary form must reproduce the above copyright
  *    notice, this list of conditions and the following disclaimer in the
  *    documentation and/or other materials provided with the distribution.
  *
  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
  * THE POSSIBILITY OF SUCH DAMAGE.
  */
 
-#ifndef V8ValueCache_h
-#define V8ValueCache_h
-
-#include "bindings/core/v8/V8GlobalValueMap.h"
-#include "core/CoreExport.h"
-#include "platform/wtf/Allocator.h"
-#include "platform/wtf/HashMap.h"
-#include "platform/wtf/Noncopyable.h"
-#include "platform/wtf/RefPtr.h"
-#include "platform/wtf/text/AtomicString.h"
-#include "platform/wtf/text/WTFString.h"
-#include "v8/include/v8.h"
-
-namespace blink {
-
-class StringCacheMapTraits
-    : public V8GlobalValueMapTraits<StringImpl*,
-                                    v8::String,
-                                    v8::kWeakWithParameter> {
-  STATIC_ONLY(StringCacheMapTraits);
-
- public:
-  // Weak traits:
-  typedef StringImpl WeakCallbackDataType;
-  typedef v8::GlobalValueMap<StringImpl*, v8::String, StringCacheMapTraits>
-      MapType;
-
-  static WeakCallbackDataType* WeakCallbackParameter(
-      MapType* map,
-      StringImpl* key,
-      v8::Local<v8::String>& value) {
-    return key;
-  }
-  static void DisposeCallbackData(WeakCallbackDataType* callback_data) {}
-
-  static MapType* MapFromWeakCallbackInfo(
-      const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-
-  static StringImpl* KeyFromWeakCallbackInfo(
-      const v8::WeakCallbackInfo<WeakCallbackDataType>& data) {
-    return data.GetParameter();
-  }
-
-  static void OnWeakCallback(const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-
-  static void Dispose(v8::Isolate*,
-                      v8::Global<v8::String> value,
-                      StringImpl* key);
-  static void DisposeWeak(const v8::WeakCallbackInfo<WeakCallbackDataType>&);
-};
-
-class CORE_EXPORT StringCache {
-  USING_FAST_MALLOC(StringCache);
-  WTF_MAKE_NONCOPYABLE(StringCache);
-
- public:
-  explicit StringCache(v8::Isolate* isolate) : string_cache_(isolate) {}
-
-  v8::Local<v8::String> V8ExternalString(v8::Isolate* isolate,
-                                         StringImpl* string_impl) {
-    DCHECK(string_impl);
-    if (last_string_impl_.Get() == string_impl)
-      return last_v8_string_.NewLocal(isolate);
-    return V8ExternalStringSlow(isolate, string_impl);
-  }
-
-  void SetReturnValueFromString(v8::ReturnValue<v8::Value> return_value,
-                                StringImpl* string_impl) {
-    DCHECK(string_impl);
-    if (last_string_impl_.Get() == string_impl)
-      last_v8_string_.SetReturnValue(return_value);
-    else
-      SetReturnValueFromStringSlow(return_value, string_impl);
-  }
-
-  void Dispose();
-
-  friend class StringCacheMapTraits;
-
- private:
-  v8::Local<v8::String> V8ExternalStringSlow(v8::Isolate*, StringImpl*);
-  void SetReturnValueFromStringSlow(v8::ReturnValue<v8::Value>, StringImpl*);
-  v8::Local<v8::String> CreateStringAndInsertIntoCache(v8::Isolate*,
-                                                       StringImpl*);
-  void InvalidateLastString();
-
-  StringCacheMapTraits::MapType string_cache_;
-  StringCacheMapTraits::MapType::PersistentValueReference last_v8_string_;
-
-  // Note: RefPtr is a must as we cache by StringImpl* equality, not identity
-  // hence lastStringImpl might be not a key of the cache (in sense of identity)
-  // and hence it's not refed on addition.
-  RefPtr<StringImpl> last_string_impl_;
-};
-
-}  // namespace blink
-
-#endif  // V8ValueCache_h
+// This file has been moved to platform/bindings/V8ValueCache.h.
+// TODO(adithyas): Remove this file.
+#include "platform/bindings/V8ValueCache.h"