1/*
2 * Copyright (C) 2005 Frerich Raabe <raabe@kde.org>
3 * Copyright (C) 2006, 2009 Apple 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 "XPathUtil.h"
29
30#include "ContainerNode.h"
31#include "TextNodeTraversal.h"
32#include <wtf/text/StringBuilder.h>
33
34namespace WebCore {
35namespace XPath {
36
37bool isRootDomNode(Node* node)
38{
39    return node && !node->parentNode();
40}
41
42String stringValue(Node* node)
43{
44    switch (node->nodeType()) {
45        case Node::ATTRIBUTE_NODE:
46        case Node::PROCESSING_INSTRUCTION_NODE:
47        case Node::COMMENT_NODE:
48        case Node::TEXT_NODE:
49        case Node::CDATA_SECTION_NODE:
50        case Node::XPATH_NAMESPACE_NODE:
51            return node->nodeValue();
52        default:
53            if (isRootDomNode(node) || node->isElementNode())
54                return TextNodeTraversal::contentsAsString(node);
55    }
56    return String();
57}
58
59bool isValidContextNode(Node* node)
60{
61    if (!node)
62        return false;
63    switch (node->nodeType()) {
64        case Node::ATTRIBUTE_NODE:
65        case Node::CDATA_SECTION_NODE:
66        case Node::COMMENT_NODE:
67        case Node::DOCUMENT_NODE:
68        case Node::ELEMENT_NODE:
69        case Node::PROCESSING_INSTRUCTION_NODE:
70        case Node::XPATH_NAMESPACE_NODE:
71            return true;
72        case Node::DOCUMENT_FRAGMENT_NODE:
73        case Node::DOCUMENT_TYPE_NODE:
74        case Node::ENTITY_NODE:
75        case Node::ENTITY_REFERENCE_NODE:
76        case Node::NOTATION_NODE:
77            return false;
78        case Node::TEXT_NODE:
79            return !(node->parentNode() && node->parentNode()->isAttributeNode());
80    }
81    ASSERT_NOT_REACHED();
82    return false;
83}
84
85}
86}
87