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Diffstat (limited to 'src/script/qscriptasm_p.h')
| -rw-r--r-- | src/script/qscriptasm_p.h | 183 |
1 files changed, 183 insertions, 0 deletions
diff --git a/src/script/qscriptasm_p.h b/src/script/qscriptasm_p.h new file mode 100644 index 0000000000..3f0058d7c4 --- /dev/null +++ b/src/script/qscriptasm_p.h @@ -0,0 +1,183 @@ +/**************************************************************************** +** +** 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 QSCRIPTASM_P_H +#define QSCRIPTASM_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/qglobal.h> + +#ifndef QT_NO_SCRIPT + +#include <QtCore/qvector.h> + +#include "qscriptvalueimplfwd_p.h" + +QT_BEGIN_NAMESPACE + +class QTextStream; + +class QScriptInstruction +{ +public: + enum Operator { +#define Q_SCRIPT_DEFINE_OPERATOR(op) OP_##op, +#include "instruction.table" +#undef Q_SCRIPT_DEFINE_OPERATOR + OP_Dummy + }; + +public: + Operator op; + QScriptValueImpl operand[2]; +#if defined(Q_SCRIPT_DIRECT_CODE) + void *code; +#endif + + void print(QTextStream &out) const; + + static const char *opcode[]; +}; + +namespace QScript { + +class NodePool; + +class ExceptionHandlerDescriptor +{ +public: + ExceptionHandlerDescriptor() + : m_startInstruction(0), + m_endInstruction(0), + m_handlerInstruction(0) {} + + ExceptionHandlerDescriptor( + int startInstruction, + int endInstruction, + int handlerInstruction) + : m_startInstruction(startInstruction), + m_endInstruction(endInstruction), + m_handlerInstruction(handlerInstruction) {} + + inline int startInstruction() const { return m_startInstruction; } + inline int endInstruction() const { return m_endInstruction; } + inline int handlerInstruction() const { return m_handlerInstruction; } + +private: + int m_startInstruction; + int m_endInstruction; + int m_handlerInstruction; +}; + +class CompilationUnit +{ +public: + CompilationUnit(): m_valid(true), + m_errorLineNumber(-1) {} + + bool isValid() const { return m_valid; } + + void setError(const QString &message, int lineNumber) + { + m_errorMessage = message; + m_errorLineNumber = lineNumber; + m_valid = false; + } + + QString errorMessage() const + { return m_errorMessage; } + int errorLineNumber() const + { return m_errorLineNumber; } + + QVector<QScriptInstruction> instructions() const + { return m_instructions; } + void setInstructions(const QVector<QScriptInstruction> &instructions) + { m_instructions = instructions; } + + QVector<ExceptionHandlerDescriptor> exceptionHandlers() const + { return m_exceptionHandlers; } + void setExceptionHandlers(const QVector<ExceptionHandlerDescriptor> &exceptionHandlers) + { m_exceptionHandlers = exceptionHandlers; } + +private: + bool m_valid; + QString m_errorMessage; + int m_errorLineNumber; + QVector<QScriptInstruction> m_instructions; + QVector<ExceptionHandlerDescriptor> m_exceptionHandlers; +}; + +class Code +{ +public: + Code(); + ~Code(); + + void init(const CompilationUnit &compilation, NodePool *astPool); + +public: // attributes + bool optimized; + QScriptInstruction *firstInstruction; + QScriptInstruction *lastInstruction; + QVector<ExceptionHandlerDescriptor> exceptionHandlers; + NodePool *astPool; + +private: + Q_DISABLE_COPY(Code) +}; + + +} // namespace QScript + +QT_END_NAMESPACE + +#endif // QT_NO_SCRIPT +#endif // QSCRIPTASM_P_H |