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      1 /*
      2  * Copyright (C) 2011 Apple 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
      6  * are met:
      7  * 1. Redistributions of source code must retain the above copyright
      8  *    notice, this list of conditions and the following disclaimer.
      9  * 2. Redistributions in binary form must reproduce the above copyright
     10  *    notice, this list of conditions and the following disclaimer in the
     11  *    documentation and/or other materials provided with the distribution.
     12  *
     13  * THIS SOFTWARE IS PROVIDED BY APPLE INC. AND ITS CONTRIBUTORS ``AS IS''
     14  * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
     15  * THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     16  * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL APPLE INC. OR ITS CONTRIBUTORS
     17  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     18  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     19  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     20  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     21  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     22  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
     23  * THE POSSIBILITY OF SUCH DAMAGE.
     24  */
     25 
     26 #include "config.h"
     27 #include "LayerTreeContext.h"
     28 
     29 #include "ArgumentDecoder.h"
     30 #include "ArgumentEncoder.h"
     31 
     32 namespace WebKit {
     33 
     34 LayerTreeContext::LayerTreeContext()
     35     : contextID(0)
     36 {
     37 }
     38 
     39 LayerTreeContext::~LayerTreeContext()
     40 {
     41 }
     42 
     43 void LayerTreeContext::encode(CoreIPC::ArgumentEncoder* encoder) const
     44 {
     45     encoder->encode(contextID);
     46 }
     47 
     48 bool LayerTreeContext::decode(CoreIPC::ArgumentDecoder* decoder, LayerTreeContext& result)
     49 {
     50     if (!decoder->decode(result.contextID))
     51         return false;
     52 
     53     return true;
     54 }
     55 
     56 bool LayerTreeContext::isEmpty() const
     57 {
     58     return !contextID;
     59 }
     60 
     61 bool operator==(const LayerTreeContext& a, const LayerTreeContext& b)
     62 {
     63     return a.contextID == b.contextID;
     64 }
     65 
     66 } // namespace WebKit
     67