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      1 /*
      2  * Copyright (C) 2011 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 #include "config.h"
     32 #include "RetainedDOMInfo.h"
     33 
     34 #include "Node.h"
     35 
     36 namespace WebCore {
     37 
     38 RetainedDOMInfo::RetainedDOMInfo(Node* root)
     39     : m_root(root)
     40 {
     41     ASSERT(m_root);
     42 }
     43 
     44 RetainedDOMInfo::~RetainedDOMInfo()
     45 {
     46 }
     47 
     48 void RetainedDOMInfo::Dispose()
     49 {
     50     delete this;
     51 }
     52 
     53 bool RetainedDOMInfo::IsEquivalent(v8::RetainedObjectInfo* other)
     54 {
     55     ASSERT(other);
     56     return other == this || static_cast<WebCore::RetainedObjectInfo*>(other)->GetEquivalenceClass() == this->GetEquivalenceClass();
     57 }
     58 
     59 intptr_t RetainedDOMInfo::GetHash()
     60 {
     61     return reinterpret_cast<intptr_t>(m_root);
     62 }
     63 
     64 const char* RetainedDOMInfo::GetLabel()
     65 {
     66     return m_root->inDocument() ? "Document DOM tree" : "Detached DOM tree";
     67 }
     68 
     69 intptr_t RetainedDOMInfo::GetElementCount()
     70 {
     71     intptr_t count = 1;
     72     Node* current = m_root;
     73     while (current) {
     74         current = current->traverseNextNode(m_root);
     75         ++count;
     76     }
     77     return count;
     78 }
     79 
     80 intptr_t RetainedDOMInfo::GetEquivalenceClass()
     81 {
     82     return reinterpret_cast<intptr_t>(m_root);
     83 }
     84 
     85 } // namespace WebCore
     86