1/*
2 * Copyright (C) 2013 Google, Inc.
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/DocumentXPathEvaluator.h"
28
29#include "bindings/v8/ExceptionState.h"
30#include "core/dom/ScriptExecutionContext.h"
31#include "core/xml/XPathEvaluator.h"
32#include "core/xml/XPathExpression.h"
33#include "core/xml/XPathNSResolver.h"
34#include "core/xml/XPathResult.h"
35
36namespace WebCore {
37
38DocumentXPathEvaluator::DocumentXPathEvaluator()
39{
40}
41
42DocumentXPathEvaluator::~DocumentXPathEvaluator()
43{
44}
45
46DocumentXPathEvaluator* DocumentXPathEvaluator::from(ScriptExecutionContext* context)
47{
48    DocumentXPathEvaluator* cache = static_cast<DocumentXPathEvaluator*>(Supplement<ScriptExecutionContext>::from(context, supplementName()));
49    if (!cache) {
50        cache = new DocumentXPathEvaluator();
51        Supplement<ScriptExecutionContext>::provideTo(context, supplementName(), adoptPtr(cache));
52    }
53    return cache;
54}
55
56PassRefPtr<XPathExpression> DocumentXPathEvaluator::createExpression(ScriptExecutionContext* context,
57    const String& expression, XPathNSResolver* resolver, ExceptionState& es)
58{
59    DocumentXPathEvaluator* suplement = from(context);
60    if (!suplement->m_xpathEvaluator)
61        suplement->m_xpathEvaluator = XPathEvaluator::create();
62    return suplement->m_xpathEvaluator->createExpression(expression, resolver, es);
63}
64
65PassRefPtr<XPathNSResolver> DocumentXPathEvaluator::createNSResolver(ScriptExecutionContext* context, Node* nodeResolver)
66{
67    DocumentXPathEvaluator* suplement = from(context);
68    if (!suplement->m_xpathEvaluator)
69        suplement->m_xpathEvaluator = XPathEvaluator::create();
70    return suplement->m_xpathEvaluator->createNSResolver(nodeResolver);
71}
72
73PassRefPtr<XPathResult> DocumentXPathEvaluator::evaluate(ScriptExecutionContext* context, const String& expression,
74    Node* contextNode, XPathNSResolver* resolver, unsigned short type,
75    XPathResult* result, ExceptionState& es)
76{
77    DocumentXPathEvaluator* suplement = from(context);
78    if (!suplement->m_xpathEvaluator)
79        suplement->m_xpathEvaluator = XPathEvaluator::create();
80    return suplement->m_xpathEvaluator->evaluate(expression, contextNode, resolver, type, result, es);
81}
82
83} // namespace WebCore
84