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 "third_party/blink/renderer/core/xml/document_xpath_evaluator.h"
27
28 #include "third_party/blink/renderer/bindings/core/v8/script_value.h"
29 #include "third_party/blink/renderer/core/xml/xpath_expression.h"
30 #include "third_party/blink/renderer/core/xml/xpath_result.h"
31 #include "third_party/blink/renderer/platform/bindings/exception_state.h"
32
33 namespace blink {
34
35 // static
36 const char DocumentXPathEvaluator::kSupplementName[] = "DocumentXPathEvaluator";
37
DocumentXPathEvaluator(Document & document)38 DocumentXPathEvaluator::DocumentXPathEvaluator(Document& document)
39 : Supplement<Document>(document) {}
40
From(Document & document)41 DocumentXPathEvaluator& DocumentXPathEvaluator::From(Document& document) {
42 DocumentXPathEvaluator* cache =
43 Supplement<Document>::From<DocumentXPathEvaluator>(document);
44 if (!cache) {
45 cache = MakeGarbageCollected<DocumentXPathEvaluator>(document);
46 Supplement<Document>::ProvideTo(document, cache);
47 }
48 return *cache;
49 }
50
createExpression(Document & document,const String & expression,XPathNSResolver * resolver,ExceptionState & exception_state)51 XPathExpression* DocumentXPathEvaluator::createExpression(
52 Document& document,
53 const String& expression,
54 XPathNSResolver* resolver,
55 ExceptionState& exception_state) {
56 DocumentXPathEvaluator& suplement = From(document);
57 if (!suplement.xpath_evaluator_)
58 suplement.xpath_evaluator_ = XPathEvaluator::Create();
59 return suplement.xpath_evaluator_->createExpression(expression, resolver,
60 exception_state);
61 }
62
createNSResolver(Document & document,Node * node_resolver)63 XPathNSResolver* DocumentXPathEvaluator::createNSResolver(Document& document,
64 Node* node_resolver) {
65 DocumentXPathEvaluator& suplement = From(document);
66 if (!suplement.xpath_evaluator_)
67 suplement.xpath_evaluator_ = XPathEvaluator::Create();
68 return suplement.xpath_evaluator_->createNSResolver(node_resolver);
69 }
70
evaluate(Document & document,const String & expression,Node * context_node,XPathNSResolver * resolver,uint16_t type,const ScriptValue &,ExceptionState & exception_state)71 XPathResult* DocumentXPathEvaluator::evaluate(Document& document,
72 const String& expression,
73 Node* context_node,
74 XPathNSResolver* resolver,
75 uint16_t type,
76 const ScriptValue&,
77 ExceptionState& exception_state) {
78 DocumentXPathEvaluator& suplement = From(document);
79 if (!suplement.xpath_evaluator_)
80 suplement.xpath_evaluator_ = XPathEvaluator::Create();
81 return suplement.xpath_evaluator_->evaluate(
82 expression, context_node, resolver, type, ScriptValue(), exception_state);
83 }
84
Trace(Visitor * visitor)85 void DocumentXPathEvaluator::Trace(Visitor* visitor) {
86 visitor->Trace(xpath_evaluator_);
87 Supplement<Document>::Trace(visitor);
88 }
89
90 } // namespace blink
91