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5 ** Contact: Nokia Corporation (qt-info@nokia.com)
7 ** This file is part of the QtDeclarative module of the Qt Toolkit.
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10 ** GNU Lesser General Public License Usage
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14 ** file. Please review the following information to ensure the GNU Lesser
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20 ** version 1.1, included in the file LGPL_EXCEPTION.txt in this package.
22 ** GNU General Public License Usage
23 ** Alternatively, this file may be used under the terms of the GNU General
24 ** Public License version 3.0 as published by the Free Software Foundation
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40 ****************************************************************************/
42 #ifndef QDECLARATIVEJSLEXER_P_H
43 #define QDECLARATIVEJSLEXER_P_H
49 // This file is not part of the Qt API. It exists purely as an
50 // implementation detail. This header file may change from version to
51 // version without notice, or even be removed.
56 #include "qdeclarativejsglobal_p.h"
57 #include "qdeclarativejsgrammar_p.h"
58 #include <QtCore/QString>
60 QT_QML_BEGIN_NAMESPACE
62 namespace QDeclarativeJS {
66 class QML_PARSER_EXPORT Lexer: public QDeclarativeJSGrammar
70 T_ABSTRACT = T_RESERVED_WORD,
71 T_BOOLEAN = T_RESERVED_WORD,
72 T_BYTE = T_RESERVED_WORD,
73 T_CHAR = T_RESERVED_WORD,
74 T_CLASS = T_RESERVED_WORD,
75 T_DOUBLE = T_RESERVED_WORD,
76 T_ENUM = T_RESERVED_WORD,
77 T_EXPORT = T_RESERVED_WORD,
78 T_EXTENDS = T_RESERVED_WORD,
79 T_FINAL = T_RESERVED_WORD,
80 T_FLOAT = T_RESERVED_WORD,
81 T_GOTO = T_RESERVED_WORD,
82 T_IMPLEMENTS = T_RESERVED_WORD,
83 T_INT = T_RESERVED_WORD,
84 T_INTERFACE = T_RESERVED_WORD,
85 T_LET = T_RESERVED_WORD,
86 T_LONG = T_RESERVED_WORD,
87 T_NATIVE = T_RESERVED_WORD,
88 T_PACKAGE = T_RESERVED_WORD,
89 T_PRIVATE = T_RESERVED_WORD,
90 T_PROTECTED = T_RESERVED_WORD,
91 T_SHORT = T_RESERVED_WORD,
92 T_STATIC = T_RESERVED_WORD,
93 T_SUPER = T_RESERVED_WORD,
94 T_SYNCHRONIZED = T_RESERVED_WORD,
95 T_THROWS = T_RESERVED_WORD,
96 T_TRANSIENT = T_RESERVED_WORD,
97 T_VOLATILE = T_RESERVED_WORD,
98 T_YIELD = T_RESERVED_WORD
104 UnclosedStringLiteral,
105 IllegalEscapeSequence,
106 IllegalUnicodeEscapeSequence,
108 IllegalExponentIndicator,
112 enum RegExpBodyPrefix {
118 Lexer(Engine *engine);
120 QString code() const;
121 void setCode(const QString &code, int lineno, bool qmlMode = true);
125 bool scanRegExp(RegExpBodyPrefix prefix = NoPrefix);
127 int regExpFlags() const { return _patternFlags; }
128 QString regExpPattern() const { return _tokenText; }
130 int tokenOffset() const;
131 int tokenLength() const;
133 int tokenStartLine() const;
134 int tokenStartColumn() const;
136 int tokenEndLine() const;
137 int tokenEndColumn() const;
139 QStringRef tokenSpell() const;
140 double tokenValue() const;
141 QString tokenText() const;
143 Error errorCode() const;
144 QString errorMessage() const;
146 bool prevTerminator() const;
148 enum ParenthesesState {
155 inline void scanChar();
158 int classify(const QChar *s, int n, bool qmlMode);
160 bool isLineTerminator() const;
161 static bool isIdentLetter(QChar c);
162 static bool isDecimalDigit(ushort c);
163 static bool isHexDigit(QChar c);
164 static bool isOctalDigit(ushort c);
165 static bool isUnicodeEscapeSequence(const QChar *chars);
167 void syncProhibitAutomaticSemicolon();
168 QChar decodeUnicodeEscapeCharacter(bool *ok);
175 QString _errorMessage;
176 QStringRef _tokenSpell;
178 const QChar *_codePtr;
179 const QChar *_lastLinePtr;
180 const QChar *_tokenLinePtr;
181 const QChar *_tokenStartPtr;
186 int _currentLineNumber;
190 ParenthesesState _parenthesesState;
191 int _parenthesesCount;
200 bool _validTokenText;
201 bool _prohibitAutomaticSemicolon;
202 bool _restrictedKeyword;
208 } // end of namespace QDeclarativeJS