Always enable ENABLE(XPATH)
[WebKit.git] / Source / WebCore / xml / XPathEvaluator.cpp
1 /*
2  * Copyright 2005 Frerich Raabe <raabe@kde.org>
3  * Copyright (C) 2006 Apple Computer, Inc.
4  *
5  * Redistribution and use in source and binary forms, with or without
6  * modification, are permitted provided that the following conditions
7  * are met:
8  * 
9  * 1. Redistributions of source code must retain the above copyright
10  *    notice, this list of conditions and the following disclaimer.
11  * 2. Redistributions in binary form must reproduce the above copyright
12  *    notice, this list of conditions and the following disclaimer in the
13  *    documentation and/or other materials provided with the distribution.
14  * 
15  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
16  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
17  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
18  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
19  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
20  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
21  * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
22  * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
23  * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
24  * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
25  */
26
27 #include "config.h"
28 #include "XPathEvaluator.h"
29
30 #include "ExceptionCode.h"
31 #include "NativeXPathNSResolver.h"
32 #include "Node.h"
33 #include "XPathExpression.h"
34 #include "XPathResult.h"
35 #include "XPathUtil.h"
36
37 namespace WebCore {
38
39 using namespace XPath;
40
41 PassRefPtr<XPathExpression> XPathEvaluator::createExpression(const String& expression,
42                                                              XPathNSResolver* resolver,
43                                                              ExceptionCode& ec)
44 {
45     return XPathExpression::createExpression(expression, resolver, ec);
46 }
47
48 PassRefPtr<XPathNSResolver> XPathEvaluator::createNSResolver(Node* nodeResolver)
49 {
50     return NativeXPathNSResolver::create(nodeResolver);
51 }
52
53 PassRefPtr<XPathResult> XPathEvaluator::evaluate(const String& expression,
54                                                  Node* contextNode,
55                                                  XPathNSResolver* resolver,
56                                                  unsigned short type,
57                                                  XPathResult* result,
58                                                  ExceptionCode& ec)
59 {
60     if (!isValidContextNode(contextNode)) {
61         ec = NOT_SUPPORTED_ERR;
62         return 0;
63     }
64
65     ec = 0;
66     RefPtr<XPathExpression> expr = createExpression(expression, resolver, ec);
67     if (ec)
68         return 0;
69     
70     return expr->evaluate(contextNode, type, result, ec);
71 }
72
73 }