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/Document.h"
31 #include "core/xml/XPathExpression.h"
32 #include "core/xml/XPathResult.h"
33
34 namespace WebCore {
35
DocumentXPathEvaluator()36 DocumentXPathEvaluator::DocumentXPathEvaluator()
37 {
38 }
39
from(DocumentSupplementable & document)40 DocumentXPathEvaluator& DocumentXPathEvaluator::from(DocumentSupplementable& document)
41 {
42 DocumentXPathEvaluator* cache = static_cast<DocumentXPathEvaluator*>(DocumentSupplement::from(document, supplementName()));
43 if (!cache) {
44 cache = new DocumentXPathEvaluator();
45 DocumentSupplement::provideTo(document, supplementName(), adoptPtrWillBeNoop(cache));
46 }
47 return *cache;
48 }
49
createExpression(DocumentSupplementable & document,const String & expression,PassRefPtrWillBeRawPtr<XPathNSResolver> resolver,ExceptionState & exceptionState)50 PassRefPtrWillBeRawPtr<XPathExpression> DocumentXPathEvaluator::createExpression(DocumentSupplementable& document,
51 const String& expression, PassRefPtrWillBeRawPtr<XPathNSResolver> resolver, ExceptionState& exceptionState)
52 {
53 DocumentXPathEvaluator& suplement = from(document);
54 if (!suplement.m_xpathEvaluator)
55 suplement.m_xpathEvaluator = XPathEvaluator::create();
56 return suplement.m_xpathEvaluator->createExpression(expression, resolver, exceptionState);
57 }
58
createNSResolver(DocumentSupplementable & document,Node * nodeResolver)59 PassRefPtrWillBeRawPtr<XPathNSResolver> DocumentXPathEvaluator::createNSResolver(DocumentSupplementable& document, Node* nodeResolver)
60 {
61 DocumentXPathEvaluator& suplement = from(document);
62 if (!suplement.m_xpathEvaluator)
63 suplement.m_xpathEvaluator = XPathEvaluator::create();
64 return suplement.m_xpathEvaluator->createNSResolver(nodeResolver);
65 }
66
evaluate(DocumentSupplementable & document,const String & expression,Node * contextNode,PassRefPtrWillBeRawPtr<XPathNSResolver> resolver,unsigned short type,XPathResult * result,ExceptionState & exceptionState)67 PassRefPtrWillBeRawPtr<XPathResult> DocumentXPathEvaluator::evaluate(DocumentSupplementable& document, const String& expression,
68 Node* contextNode, PassRefPtrWillBeRawPtr<XPathNSResolver> resolver, unsigned short type,
69 XPathResult* result, ExceptionState& exceptionState)
70 {
71 DocumentXPathEvaluator& suplement = from(document);
72 if (!suplement.m_xpathEvaluator)
73 suplement.m_xpathEvaluator = XPathEvaluator::create();
74 return suplement.m_xpathEvaluator->evaluate(expression, contextNode, resolver, type, result, exceptionState);
75 }
76
trace(Visitor * visitor)77 void DocumentXPathEvaluator::trace(Visitor* visitor)
78 {
79 visitor->trace(m_xpathEvaluator);
80 DocumentSupplement::trace(visitor);
81 }
82
83 } // namespace WebCore
84