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tokenizer.h
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1/*
2 * tokenizer.h - Copyright 2005 Maksim Orlovich <maksim@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 TOKENIZER_H
26#define TOKENIZER_H
27
28#include <QSet>
29#include <QString>
30#include <QHash>
31
32#include "step.h"
33#include "path.h"
34#include "predicate.h"
35#include "expression.h"
36#include "util.h"
37#include "parser.h"
38
39namespace khtml {
40namespace XPath {
41
42
43struct Token
44{
45 int type;
46 QString value;
47 int intValue; //0 if not set
48 bool hasString;
49
50 Token(int _type): type(_type), intValue(0), hasString(false) {}
51 Token(QString _value): type(ERROR+1), value(_value), intValue(0), hasString(true) {}
52 Token(int _type, QString _value): type(_type), value(_value), intValue(0), hasString(true) {}
53 Token(int _type, int _value): type(_type), intValue(_value), hasString(false) {}
54};
55
56class Tokenizer
57{
58private:
59 int m_nextPos;
60 QString m_data;
61 int m_lastTokenType;
62
63 static QHash<QString, Step::AxisType>* s_axisNamesDict;
64 static QSet<QString>* s_nodeTypeNamesDict;
65
66 enum XMLCat {
67 NameStart,
68 NameCont,
69 NotPartOfName
70 };
71
72 XMLCat charCat(QChar aChar);
73
74 bool isAxisName(QString name, Step::AxisType *type = 0);
75 bool isNodeTypeName(QString name);
76 bool isOperatorContext();
77
78 void skipWS();
79 Token makeTokenAndAdvance(int code, int advance = 1);
80 Token makeIntTokenAndAdvance(int code, int val, int advance = 1);
81 char peekAheadHelper();
82 char peekCurHelper();
83
84 Token lexString();
85 Token lexNumber();
86 Token lexNCName();
87 Token lexQName();
88
89 Token nextTokenInternal();
90 Tokenizer();
91 Tokenizer(const Tokenizer &rhs); // disabled
92 Tokenizer &operator=(const Tokenizer &rhs); // disabled
93 ~Tokenizer();
94public:
95 static Tokenizer &self();
96
97 void reset(QString);
98 Token nextToken();
99};
100
101// Interface to the parser
102int khtmlxpathyylex();
103void khtmlxpathyyerror(const char *str);
104void initTokenizer(const DOM::DOMString& string);
105
106} // namespace XPath
107
108} // namespace khtml
109
110
111#endif
112// kate: indent-width 4; replace-tabs off; tab-width 4; indent-spaces: off;
DOM::DOMString
This class implements the basic string we use in the DOM.
Definition: dom_string.h:44
QHash
QSet
khtml::XPath::Step::AxisType
AxisType
Definition: step.h:45
khtml::XPath::Tokenizer
Definition: tokenizer.h:57
khtml::XPath::Tokenizer::self
static Tokenizer & self()
Definition: tokenizer.cpp:77
khtml::XPath::Tokenizer::nextToken
Token nextToken()
Definition: tokenizer.cpp:411
khtml::XPath::Tokenizer::reset
void reset(QString)
Definition: tokenizer.cpp:429
expression.h
name
const char * name(StandardAction id)
khtml::XPath::khtmlxpathyylex
int khtmlxpathyylex()
Definition: tokenizer.cpp:436
khtml::XPath::khtmlxpathyyerror
void khtmlxpathyyerror(const char *str)
Definition: parser.cpp:2183
khtml::XPath::initTokenizer
void initTokenizer(const DOM::DOMString &string)
Definition: tokenizer.cpp:447
khtml
ERROR
@ ERROR
Definition: parser.cpp:161
parser.h
path.h
predicate.h
step.h
khtml::XPath::Token
Definition: tokenizer.h:44
khtml::XPath::Token::Token
Token(int _type)
Definition: tokenizer.h:50
khtml::XPath::Token::intValue
int intValue
Definition: tokenizer.h:47
khtml::XPath::Token::Token
Token(int _type, int _value)
Definition: tokenizer.h:53
khtml::XPath::Token::hasString
bool hasString
Definition: tokenizer.h:48
khtml::XPath::Token::value
QString value
Definition: tokenizer.h:46
khtml::XPath::Token::type
int type
Definition: tokenizer.h:45
khtml::XPath::Token::Token
Token(QString _value)
Definition: tokenizer.h:51
khtml::XPath::Token::Token
Token(int _type, QString _value)
Definition: tokenizer.h:52
util.h
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