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Diffstat (limited to 'src/qml/qml/parser/qqmljslexer_p.h')
| -rw-r--r-- | src/qml/qml/parser/qqmljslexer_p.h | 248 |
1 files changed, 248 insertions, 0 deletions
diff --git a/src/qml/qml/parser/qqmljslexer_p.h b/src/qml/qml/parser/qqmljslexer_p.h new file mode 100644 index 0000000000..6b51852f5f --- /dev/null +++ b/src/qml/qml/parser/qqmljslexer_p.h @@ -0,0 +1,248 @@ +/**************************************************************************** +** +** Copyright (C) 2012 Nokia Corporation and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/ +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** GNU Lesser General Public License Usage +** 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 1.1, 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. +** +** Other Usage +** Alternatively, this file may be used in accordance with the terms and +** conditions contained in a signed written agreement between you and Nokia. +** +** +** +** +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QQMLJSLEXER_P_H +#define QQMLJSLEXER_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 "qqmljsglobal_p.h" +#include "qqmljsgrammar_p.h" +#include <QtCore/QString> + +QT_QML_BEGIN_NAMESPACE + +namespace QQmlJS { + +class Engine; + +class QML_PARSER_EXPORT Directives { +public: + virtual ~Directives() {} + + virtual void pragmaLibrary() + { + } + + virtual void importFile(const QString &jsfile, const QString &module) + { + Q_UNUSED(jsfile); + Q_UNUSED(module); + } + + virtual void importModule(const QString &uri, const QString &version, const QString &module) + { + Q_UNUSED(uri); + Q_UNUSED(version); + Q_UNUSED(module); + } +}; + +class QML_PARSER_EXPORT Lexer: public QQmlJSGrammar +{ +public: + enum { + T_ABSTRACT = T_RESERVED_WORD, + T_BOOLEAN = T_RESERVED_WORD, + T_BYTE = T_RESERVED_WORD, + T_CHAR = T_RESERVED_WORD, + T_CLASS = T_RESERVED_WORD, + T_DOUBLE = T_RESERVED_WORD, + T_ENUM = T_RESERVED_WORD, + T_EXPORT = T_RESERVED_WORD, + T_EXTENDS = T_RESERVED_WORD, + T_FINAL = T_RESERVED_WORD, + T_FLOAT = T_RESERVED_WORD, + T_GOTO = T_RESERVED_WORD, + T_IMPLEMENTS = T_RESERVED_WORD, + T_INT = T_RESERVED_WORD, + T_INTERFACE = T_RESERVED_WORD, + T_LET = T_RESERVED_WORD, + T_LONG = T_RESERVED_WORD, + T_NATIVE = T_RESERVED_WORD, + T_PACKAGE = T_RESERVED_WORD, + T_PRIVATE = T_RESERVED_WORD, + T_PROTECTED = T_RESERVED_WORD, + T_SHORT = T_RESERVED_WORD, + T_STATIC = T_RESERVED_WORD, + T_SUPER = T_RESERVED_WORD, + T_SYNCHRONIZED = T_RESERVED_WORD, + T_THROWS = T_RESERVED_WORD, + T_TRANSIENT = T_RESERVED_WORD, + T_VOLATILE = T_RESERVED_WORD, + T_YIELD = T_RESERVED_WORD + }; + + enum Error { + NoError, + IllegalCharacter, + UnclosedStringLiteral, + IllegalEscapeSequence, + IllegalUnicodeEscapeSequence, + UnclosedComment, + IllegalExponentIndicator, + IllegalIdentifier + }; + + enum RegExpBodyPrefix { + NoPrefix, + EqualPrefix + }; + + enum RegExpFlag { + RegExp_Global = 0x01, + RegExp_IgnoreCase = 0x02, + RegExp_Multiline = 0x04 + }; + +public: + Lexer(Engine *engine); + + bool qmlMode() const; + + QString code() const; + void setCode(const QString &code, int lineno, bool qmlMode = true); + + int lex(); + + bool scanRegExp(RegExpBodyPrefix prefix = NoPrefix); + bool scanDirectives(Directives *directives); + + int regExpFlags() const { return _patternFlags; } + QString regExpPattern() const { return _tokenText; } + + int tokenKind() const; + int tokenOffset() const; + int tokenLength() const; + + int tokenStartLine() const; + int tokenStartColumn() const; + + int tokenEndLine() const; + int tokenEndColumn() const; + + QStringRef tokenSpell() const; + double tokenValue() const; + QString tokenText() const; + + Error errorCode() const; + QString errorMessage() const; + + bool prevTerminator() const; + bool followsClosingBrace() const; + bool canInsertAutomaticSemicolon(int token) const; + + enum ParenthesesState { + IgnoreParentheses, + CountParentheses, + BalancedParentheses + }; + +protected: + int classify(const QChar *s, int n, bool qmlMode); + +private: + inline void scanChar(); + int scanToken(); + + bool isLineTerminator() const; + static bool isIdentLetter(QChar c); + static bool isDecimalDigit(ushort c); + static bool isHexDigit(QChar c); + static bool isOctalDigit(ushort c); + static bool isUnicodeEscapeSequence(const QChar *chars); + + void syncProhibitAutomaticSemicolon(); + QChar decodeUnicodeEscapeCharacter(bool *ok); + +private: + Engine *_engine; + + QString _code; + QString _tokenText; + QString _errorMessage; + QStringRef _tokenSpell; + + const QChar *_codePtr; + const QChar *_lastLinePtr; + const QChar *_tokenLinePtr; + const QChar *_tokenStartPtr; + + QChar _char; + Error _errorCode; + + int _currentLineNumber; + double _tokenValue; + + // parentheses state + ParenthesesState _parenthesesState; + int _parenthesesCount; + + int _stackToken; + + int _patternFlags; + int _tokenKind; + int _tokenLength; + int _tokenLine; + + bool _validTokenText; + bool _prohibitAutomaticSemicolon; + bool _restrictedKeyword; + bool _terminator; + bool _followsClosingBrace; + bool _delimited; + bool _qmlMode; +}; + +} // end of namespace QQmlJS + +QT_QML_END_NAMESPACE + +#endif // LEXER_H |