| /**************************************************************************** |
| ** |
| ** 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 |