| // Copyright 2014 The Chromium Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #ifndef SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_ |
| #define SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_ |
| |
| #include "sky/engine/wtf/OwnPtr.h" |
| #include "sky/engine/wtf/RefPtr.h" |
| |
| namespace blink { |
| |
| template <typename T> |
| bool dataEquivalent(const T* a, const T* b) |
| { |
| if (a == b) |
| return true; |
| if (!a || !b) |
| return false; |
| return *a == *b; |
| } |
| |
| template <typename T> |
| bool dataEquivalent(const RefPtr<T>& a, const RefPtr<T>& b) |
| { |
| return dataEquivalent(a.get(), b.get()); |
| } |
| |
| template <typename T> |
| bool dataEquivalent(const OwnPtr<T>& a, const OwnPtr<T>& b) |
| { |
| return dataEquivalent(a.get(), b.get()); |
| } |
| |
| } // namespace blink |
| |
| #endif // SKY_ENGINE_CORE_RENDERING_STYLE_DATAEQUIVALENCY_H_ |