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step.h
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1/*
2 * step.h - Copyright 2005 Frerich Raabe <raabe@kde.org>
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 *
8 * 1. Redistributions of source code must retain the above copyright
9 * notice, this list of conditions and the following disclaimer.
10 * 2. Redistributions in binary form must reproduce the above copyright
11 * notice, this list of conditions and the following disclaimer in the
12 * documentation and/or other materials provided with the distribution.
13 *
14 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
15 * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
16 * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
17 * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
18 * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
19 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
20 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
21 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
22 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
23 * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
24 */
25#ifndef STEP_H
26#define STEP_H
27
28#include "predicate.h"
29#include "util.h"
30
31#include <QList>
32
33#include <dom/dom_string.h>
34
35namespace DOM {
36 class NodeImpl;
37}
38
39namespace khtml {
40namespace XPath {
41
42class Step
43{
44 public:
45 enum AxisType {
46 AncestorAxis=1, AncestorOrSelfAxis, AttributeAxis,
47 ChildAxis, DescendantAxis, DescendantOrSelfAxis,
48 FollowingAxis, FollowingSiblingAxis, NamespaceAxis,
49 ParentAxis, PrecedingAxis, PrecedingSiblingAxis,
50 SelfAxis
51 };
52
53 static QString axisAsString( AxisType axis );
54
55 Step();
56 Step( AxisType axis,
57 const DOM::DOMString &nodeTest,
58 const QList<Predicate *> &predicates = QList<Predicate *>() );
59 ~Step();
60
61 DomNodeList evaluate( DOM::NodeImpl *context ) const;
62
63 void optimize();
64 QString dump() const;
65
66 private:
67 DomNodeList nodesInAxis( DOM::NodeImpl *context ) const;
68 DomNodeList nodeTestMatches( DOM::NodeImpl* ctx, const DomNodeList &nodes ) const;
69 DOM::DOMString namespaceFromNodetest( const DOM::DOMString &nodeTest ) const;
70 unsigned int primaryNodeType( AxisType axis ) const;
71
72 // Original axis + nodetest specification
73 AxisType m_axis;
74 DOM::DOMString m_nodeTest;
75
76 enum CompileState {
77 NotCompiled,
78 CompiledForHTML,
79 CompiledForXML
80 };
81
82 mutable CompileState m_compileState;
83
84 void compileNodeTest(bool htmlCompat) const;
85
86 // Compiled nodetest information. We do this jit'ish due to the
87 // case sensitivity mess.
88 mutable enum {
89 NT_Star, // *
90 NT_LocalName, // NCName
91 NT_Namespace, // NCName:*
92 NT_QName, // Prefix:LocalName
93 NT_Comment, // 'comment'
94 NT_Text, // 'text'
95 NT_PI, // 'processing-instruction'
96 NT_AnyNode, // 'node'
97 NT_PI_Lit // 'processing-instruction' '(' Literal ')'
98 } m_nodeTestType;
99 mutable DOM::LocalName m_localName;
100 mutable DOM::NamespaceName m_namespace;
101 mutable DOM::DOMString m_piInfo;
102
103 QList<Predicate *> m_predicates;
104};
105
106} // namespace XPath
107
108} // namespace khtml
109
110
111#endif // STEP_H
112
113// kate: indent-width 4; replace-tabs off; tab-width 4; space-indent off;
DOM::DOMString
This class implements the basic string we use in the DOM.
Definition: dom_string.h:44
QList
khtml::XPath::Step
Definition: step.h:43
khtml::XPath::Step::optimize
void optimize()
Definition: step.cpp:469
khtml::XPath::Step::axisAsString
static QString axisAsString(AxisType axis)
Definition: step.cpp:91
khtml::XPath::Step::Step
Step()
Definition: step.cpp:111
khtml::XPath::Step::evaluate
DomNodeList evaluate(DOM::NodeImpl *context) const
Definition: step.cpp:129
khtml::XPath::Step::dump
QString dump() const
Definition: step.cpp:476
khtml::XPath::Step::~Step
~Step()
Definition: step.cpp:124
khtml::XPath::Step::AxisType
AxisType
Definition: step.h:45
khtml::XPath::Step::NamespaceAxis
@ NamespaceAxis
Definition: step.h:48
khtml::XPath::Step::PrecedingAxis
@ PrecedingAxis
Definition: step.h:49
khtml::XPath::Step::ParentAxis
@ ParentAxis
Definition: step.h:49
khtml::XPath::Step::ChildAxis
@ ChildAxis
Definition: step.h:47
khtml::XPath::Step::AttributeAxis
@ AttributeAxis
Definition: step.h:46
khtml::XPath::Step::PrecedingSiblingAxis
@ PrecedingSiblingAxis
Definition: step.h:49
khtml::XPath::Step::FollowingSiblingAxis
@ FollowingSiblingAxis
Definition: step.h:48
khtml::XPath::Step::DescendantAxis
@ DescendantAxis
Definition: step.h:47
khtml::XPath::Step::AncestorOrSelfAxis
@ AncestorOrSelfAxis
Definition: step.h:46
khtml::XPath::Step::DescendantOrSelfAxis
@ DescendantOrSelfAxis
Definition: step.h:47
khtml::XPath::Step::FollowingAxis
@ FollowingAxis
Definition: step.h:48
khtml::XPath::Step::SelfAxis
@ SelfAxis
Definition: step.h:50
khtml::XPath::Step::AncestorAxis
@ AncestorAxis
Definition: step.h:46
dom_string.h
DOM
This library provides a full-featured HTML parser and widget.
Definition: design.h:55
khtml::XPath::DomNodeList
SharedPtr< DOM::StaticNodeListImpl > DomNodeList
Definition: util.h:41
khtml
predicate.h
util.h
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