third_party/WebKit/Source/core/xml/NativeXPathNSResolver.cpp

   1 /*
   2  * Copyright (C) 2007 Alexey Proskuryakov (ap@nypop.com)
   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 COMPUTER, INC. ``AS IS'' AND ANY
  14  * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  15  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
  16  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL APPLE COMPUTER, INC. OR
  17  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
  18  * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
  19  * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
  20  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY
  21  * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  22  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  23  * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  24  */
  25
  26 #include "config.h"
  27 #include "core/xml/NativeXPathNSResolver.h"
  28
  29 #include "core/XMLNames.h"
  30 #include "core/dom/Node.h"
  31 #include "wtf/text/WTFString.h"
  32
  33 namespace blink {
  34
  35 NativeXPathNSResolver::NativeXPathNSResolver(PassRefPtrWillBeRawPtr<Node> node)
  36     : m_node(node)
  37 {
  38 }
  39
  40 AtomicString NativeXPathNSResolver::lookupNamespaceURI(const String& prefix)
  41 {
  42     // This is not done by Node::lookupNamespaceURI as per the DOM3 Core spec,
  43     // but the XPath spec says that we should do it for XPathNSResolver.
  44     if (prefix == "xml")
  45         return XMLNames::xmlNamespaceURI;
  46
  47     return m_node ? m_node->lookupNamespaceURI(prefix) : nullAtom;
  48 }
  49
  50 DEFINE_TRACE(NativeXPathNSResolver)
  51 {
  52     visitor->trace(m_node);
  53     XPathNSResolver::trace(visitor);
  54 }
  55
  56 } // namespace blink