diff options
author | Lars Knoll <lars.knoll@digia.com> | 2013-08-08 13:17:32 +0200 |
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committer | The Qt Project <gerrit-noreply@qt-project.org> | 2013-08-08 15:35:11 +0200 |
commit | 3cefb43441a9879cc512dc3fcc7dca0d42e9ca8c (patch) | |
tree | 5332a086584448dafbce7f736d19c4242521ee3f /src/qml/parser/qqmljslexer_p.h | |
parent | 6c51b182f3fc3abdd6330b402c4fe16d623d1b0a (diff) |
Move the parser folder from src/qml/qml to src/qml
Change-Id: I5e5684f5b98b00f791ade99c4cb6bc2ed880ad6a
Reviewed-by: Simon Hausmann <simon.hausmann@digia.com>
Diffstat (limited to 'src/qml/parser/qqmljslexer_p.h')
-rw-r--r-- | src/qml/parser/qqmljslexer_p.h | 253 |
1 files changed, 253 insertions, 0 deletions
diff --git a/src/qml/parser/qqmljslexer_p.h b/src/qml/parser/qqmljslexer_p.h new file mode 100644 index 0000000000..23af61d650 --- /dev/null +++ b/src/qml/parser/qqmljslexer_p.h @@ -0,0 +1,253 @@ +/**************************************************************************** +** +** Copyright (C) 2013 Digia Plc and/or its subsidiary(-ies). +** Contact: http://www.qt-project.org/legal +** +** This file is part of the QtQml module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL$ +** Commercial License Usage +** Licensees holding valid commercial Qt licenses may use this file in +** accordance with the commercial license agreement provided with the +** Software or, alternatively, in accordance with the terms contained in +** a written agreement between you and Digia. For licensing terms and +** conditions see http://qt.digia.com/licensing. For further information +** use the contact form at http://qt.digia.com/contact-us. +** +** 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, Digia gives you certain additional +** rights. These rights are described in the Digia 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. +** +** +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#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.h> + +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_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 + }; + + enum Error { + NoError, + IllegalCharacter, + IllegalHexNumber, + UnclosedStringLiteral, + IllegalEscapeSequence, + IllegalUnicodeEscapeSequence, + UnclosedComment, + IllegalExponentIndicator, + IllegalIdentifier, + IllegalHexadecimalEscapeSequence + }; + + 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 { return _tokenKind; } + int tokenOffset() const { return _tokenStartPtr - _code.unicode(); } + int tokenLength() const { return _tokenLength; } + + int tokenStartLine() const { return _tokenLine; } + int tokenStartColumn() const { return _tokenStartPtr - _tokenLinePtr + 1; } + + int tokenEndLine() const; + int tokenEndColumn() const; + + inline QStringRef tokenSpell() const { return _tokenSpell; } + double tokenValue() const { return _tokenValue; } + 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(); + int scanNumber(QChar ch); + + bool isLineTerminator() const; + unsigned isLineTerminatorSequence() 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); + QChar decodeHexEscapeCharacter(bool *ok); + +private: + Engine *_engine; + + QString _code; + QString _tokenText; + QString _errorMessage; + QStringRef _tokenSpell; + + const QChar *_codePtr; + const QChar *_endPtr; + 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 |