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Diffstat (limited to 'src/script/parser/qscriptsyntaxchecker_p.h')
-rw-r--r-- | src/script/parser/qscriptsyntaxchecker_p.h | 96 |
1 files changed, 96 insertions, 0 deletions
diff --git a/src/script/parser/qscriptsyntaxchecker_p.h b/src/script/parser/qscriptsyntaxchecker_p.h new file mode 100644 index 0000000..3b16c64 --- /dev/null +++ b/src/script/parser/qscriptsyntaxchecker_p.h @@ -0,0 +1,96 @@ +/**************************************************************************** +** +** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies). +** All rights reserved. +** Contact: Nokia Corporation (qt-info@nokia.com) +** +** This file is part of the QtScript module of the Qt Toolkit. +** +** $QT_BEGIN_LICENSE:LGPL-ONLY$ +** 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. +** +** If you have questions regarding the use of this file, please contact +** Nokia at qt-info@nokia.com. +** $QT_END_LICENSE$ +** +****************************************************************************/ + +#ifndef QSCRIPTSYNTAXCHECKER_H +#define QSCRIPTSYNTAXCHECKER_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.h> + +#include "qscriptgrammar_p.h" + +QT_BEGIN_NAMESPACE + +namespace QScript { + +class Lexer; + +class SyntaxChecker: protected QScriptGrammar +{ +public: + enum State { + Error, + Intermediate, + Valid, + }; + + struct Result { + Result(State s, int ln, int col, const QString &msg) + : state(s), errorLineNumber(ln), errorColumnNumber(col), + errorMessage(msg) {} + State state; + int errorLineNumber; + int errorColumnNumber; + QString errorMessage; + }; + + SyntaxChecker(); + ~SyntaxChecker(); + + Result checkSyntax(const QString &code); + +protected: + bool automatic(QScript::Lexer *lexer, int token) const; + inline void reallocateStack(); + +protected: + int tos; + int stack_size; + int *state_stack; +}; + +inline void SyntaxChecker::reallocateStack() +{ + if (! stack_size) + stack_size = 128; + else + stack_size <<= 1; + + state_stack = reinterpret_cast<int*> (qRealloc(state_stack, stack_size * sizeof(int))); +} + +} // namespace QScript + +QT_END_NAMESPACE + +#endif |