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author | Roberto Raggi <roberto.raggi@nokia.com> | 2009-06-11 08:46:43 (GMT) |
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committer | Roberto Raggi <roberto.raggi@nokia.com> | 2009-06-11 09:02:53 (GMT) |
commit | 7d7c1da715474cefa5404df684d680c36e4b6b20 (patch) | |
tree | 9a47bae6183401f0d846a2723a7f43fafcab77ef /src/declarative/qml/parser/qmljslexer_p.h | |
parent | f88167c39259967912540cf50d3f9df9524da4b3 (diff) | |
download | Qt-7d7c1da715474cefa5404df684d680c36e4b6b20.zip Qt-7d7c1da715474cefa5404df684d680c36e4b6b20.tar.gz Qt-7d7c1da715474cefa5404df684d680c36e4b6b20.tar.bz2 |
Renamed the QML front-end.
Diffstat (limited to 'src/declarative/qml/parser/qmljslexer_p.h')
-rw-r--r-- | src/declarative/qml/parser/qmljslexer_p.h | 269 |
1 files changed, 269 insertions, 0 deletions
diff --git a/src/declarative/qml/parser/qmljslexer_p.h b/src/declarative/qml/parser/qmljslexer_p.h new file mode 100644 index 0000000..e1ff23e --- /dev/null +++ b/src/declarative/qml/parser/qmljslexer_p.h @@ -0,0 +1,269 @@ +/**************************************************************************** +** +** Copyright (C) 2009 Nokia Corporation and/or its subsidiary(-ies). +** Contact: Qt Software Information (qt-info@nokia.com) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** No Commercial Usage +** This file contains pre-release code and may not be distributed. +** You may use this file in accordance with the terms and conditions +** contained in the either Technology Preview License Agreement or the +** Beta Release License Agreement. +** +** GNU Lesser General Public License Usage +** Alternatively, this file may be used under the terms of the GNU Lesser +** General Public License version 2.1 as published by the Free Software +** Foundation and appearing in the file LICENSE.LGPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU Lesser General Public License version 2.1 requirements +** will be met: http://www.gnu.org/licenses/old-licenses/lgpl-2.1.html. +** +** In addition, as a special exception, Nokia gives you certain +** additional rights. These rights are described in the Nokia Qt LGPL +** Exception version 1.0, included in the file LGPL_EXCEPTION.txt in this +** package. +** +** GNU General Public License Usage +** Alternatively, this file may be used under the terms of the GNU +** General Public License version 3.0 as published by the Free Software +** Foundation and appearing in the file LICENSE.GPL included in the +** packaging of this file. Please review the following information to +** ensure the GNU General Public License version 3.0 requirements will be +** met: http://www.gnu.org/copyleft/gpl.html. +** +** If you are unsure which license is appropriate for your use, please +** contact the sales department at qt-sales@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QMLJSLEXER_P_H +#define QMLJSLEXER_P_H + +// +// W A R N I N G +// ------------- +// +// This file is not part of the Qt API. It exists purely as an +// implementation detail. This header file may change from version to +// version without notice, or even be removed. +// +// We mean it. +// + +#include <QtCore/QString> + + + +QT_BEGIN_NAMESPACE + +namespace QmlJS { + +class Engine; +class NameId; + +class Lexer +{ +public: + Lexer(Engine *eng); + ~Lexer(); + + void setCode(const QString &c, int lineno); + int lex(); + + int currentLineNo() const { return yylineno; } + int currentColumnNo() const { return yycolumn; } + + int tokenOffset() const { return startpos; } + int tokenLength() const { return pos - startpos; } + + int startLineNo() const { return startlineno; } + int startColumnNo() const { return startcolumn; } + + int endLineNo() const { return currentLineNo(); } + int endColumnNo() const + { int col = currentColumnNo(); return (col > 0) ? col - 1 : col; } + + bool prevTerminator() const { return terminator; } + + enum State { Start, + Identifier, + InIdentifier, + InSingleLineComment, + InMultiLineComment, + InNum, + InNum0, + InHex, + InOctal, + InDecimal, + InExponentIndicator, + InExponent, + Hex, + Octal, + Number, + String, + Eof, + InString, + InEscapeSequence, + InHexEscape, + InUnicodeEscape, + Other, + Bad }; + + enum Suffix { + noSuffix, + emSuffix, + exSuffix, + pxSuffix, + cmSuffix, + mmSuffix, + inSuffix, + ptSuffix, + pcSuffix, + degSuffix, + radSuffix, + gradSuffix, + msSuffix, + sSuffix, + hzSuffix, + khzSuffix + }; + + enum Error { + NoError, + IllegalCharacter, + UnclosedStringLiteral, + IllegalEscapeSequence, + IllegalUnicodeEscapeSequence, + UnclosedComment, + IllegalExponentIndicator, + IllegalIdentifier + }; + + enum ParenthesesState { + IgnoreParentheses, + CountParentheses, + BalancedParentheses + }; + + enum RegExpBodyPrefix { + NoPrefix, + EqualPrefix + }; + + bool scanRegExp(RegExpBodyPrefix prefix = NoPrefix); + + NameId *pattern; + int flags; + + State lexerState() const + { return state; } + + QString errorMessage() const + { return errmsg; } + void setErrorMessage(const QString &err) + { errmsg = err; } + void setErrorMessage(const char *err) + { setErrorMessage(QString::fromLatin1(err)); } + + Error error() const + { return err; } + void clearError() + { err = NoError; } + +private: + Engine *driver; + int yylineno; + bool done; + char *buffer8; + QChar *buffer16; + uint size8, size16; + uint pos8, pos16; + bool terminator; + bool restrKeyword; + // encountered delimiter like "'" and "}" on last run + bool delimited; + int stackToken; + + State state; + void setDone(State s); + uint pos; + void shift(uint p); + int lookupKeyword(const char *); + + bool isWhiteSpace() const; + bool isLineTerminator() const; + bool isHexDigit(ushort c) const; + bool isOctalDigit(ushort c) const; + + int matchPunctuator(ushort c1, ushort c2, + ushort c3, ushort c4); + ushort singleEscape(ushort c) const; + ushort convertOctal(ushort c1, ushort c2, + ushort c3) const; +public: + static unsigned char convertHex(ushort c1); + static unsigned char convertHex(ushort c1, ushort c2); + static QChar convertUnicode(ushort c1, ushort c2, + ushort c3, ushort c4); + static bool isIdentLetter(ushort c); + static bool isDecimalDigit(ushort c); + + inline int ival() const { return qsyylval.ival; } + inline double dval() const { return qsyylval.dval; } + inline NameId *ustr() const { return qsyylval.ustr; } + + const QChar *characterBuffer() const { return buffer16; } + int characterCount() const { return pos16; } + +private: + void record8(ushort c); + void record16(QChar c); + void recordStartPos(); + + int findReservedWord(const QChar *buffer, int size) const; + + void syncProhibitAutomaticSemicolon(); + + const QChar *code; + uint length; + int yycolumn; + int startpos; + int startlineno; + int startcolumn; + int bol; // begin of line + + union { + int ival; + double dval; + NameId *ustr; + } qsyylval; + + // current and following unicode characters + ushort current, next1, next2, next3; + + struct keyword { + const char *name; + int token; + }; + + QString errmsg; + Error err; + + bool wantRx; + bool check_reserved; + + ParenthesesState parenthesesState; + int parenthesesCount; + bool prohibitAutomaticSemicolon; +}; + +} // namespace QmlJS + +QT_END_NAMESPACE + + + +#endif |