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# qsinterpreter.h

This is the verbatim text of the qsinterpreter.h include file. It is provided only for illustration; the copyright remains with Trolltech.

    /****************************************************************************
    ** $Id$
    **
    ** Copyright (C) 2001-2003 Trolltech AS.  All rights reserved.
    **
    ** This file is part of the Qt Script for Applications framework (QSA).
    **
    ** This file may be distributed and/or modified under the terms of the
    ** GNU General Public License version 2 as published by the Free Software
    ** Foundation and appearing in the file LICENSE.GPL included in the
    ** packaging of this file.
    **
    ** Licensees holding a valid Qt Script for Applications license may use
    ** this file in accordance with the Qt Script for Applications License
    ** Agreement provided with the Software.
    **
    ** This file is provided AS IS with NO WARRANTY OF ANY KIND, INCLUDING THE
    ** WARRANTY OF DESIGN, MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.
    **
    ** See http://www.trolltech.com/pricing.html or email sales@trolltech.com for
    **   information about QSA Commercial License Agreements.
    ** See http://www.trolltech.com/gpl/ for GPL licensing information.
    **
    ** Contact info@trolltech.com if any conditions of this licensing are
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    #ifndef QSINTERPRETER_H
    #define QSINTERPRETER_H

    #include "qsaglobal.h"
    #include "qsproject.h"
    #include "qsargument.h"

    #include <qobject.h>
    #include <qvariant.h>
    #include <qobjectlist.h>

    class QSProject;
    class QSInterpreterPrivate;
    class QuickInterpreter;
    class QSObjectFactory;
    class QSWrapperFactory;

    class QSA_EXPORT QSStackFrame
    {
    public:
        QSStackFrame( const QString &fun = QString::null,
    		  const QString &file = QString::null,
    		  int line = 0,
    		  QObject *con = 0 ) :
    	fname( file ), func( fun ), ln( line ), cont( con )
        {
        }

        QString scriptName() const { return fname; }
        QString function() const { return func; }
        int line() const { return ln; }
        QObject *context() const { return cont; }
    private:
        QString fname, func;
        int ln;
        QObject *cont;
    };

    bool operator==( const QSStackFrame &a, const QSStackFrame &b );

    class QSA_EXPORT QSStackTrace : public QValueList<QSStackFrame>
    {
    public:
        QString toString() const;
    };

    class QSA_EXPORT QSInterpreter : public QObject
    {
        friend class QSProject;
        friend class QSWrapperFactory; // for access to interpreter()
        friend class QSObjectFactory;
        friend class QSInterfaceFactory;
        friend class QSToolkitFactory;
        friend QuickInterpreter *get_quick_interpreter( QSInterpreter *ip );

        Q_OBJECT
        Q_ENUMS( ErrorMode )
        Q_PROPERTY( ErrorMode errorMode READ errorMode WRITE setErrorMode )
        Q_PROPERTY( int timeoutInterval READ timeoutInterval WRITE setTimeoutInterval )

    public:
        enum ErrorMode { Notify, Nothing };
        enum ClassFlags { AllClasses, GlobalClasses };
        enum FunctionFlags { FunctionNames = 0,
    			 FunctionSignatures = 1,
    			 IncludeMemberFunctions = 2 };

        QSInterpreter( QObject *parent = 0, const char *name = 0 );
        virtual ~QSInterpreter();

        static QSInterpreter *defaultInterpreter();

        QSArgument evaluate( const QString &code, QObject *context = 0,
    			 const QString &scriptName = QString::null );
        QSArgument call( const QString &function,
    		   const QSArgumentList &arguments = QSArgumentList(),
    		   QObject *context = 0 );
        QObject *currentContext() const;

        bool checkSyntax( const QString &code );

        void setErrorMode( ErrorMode m );
        ErrorMode errorMode() const;

        QSProject* project() const;

        QStringList functions( FunctionFlags flag = FunctionNames ) const;
        QStringList functions( const QString &context,
    			   uint mask = FunctionNames ) const;
        QStringList functions( QObject *context,
    			   FunctionFlags flag = FunctionNames ) const;

        QStringList classes( ClassFlags = AllClasses ) const;
        QStringList classes( const QString &context ) const;
        QStringList classes( QObject *context ) const;

        QStringList variables() const;
        QStringList variables( const QString &context ) const;
        QStringList variables( QObject *context ) const;

        bool hasFunction(const QString &function) const;
        bool hasClass(const QString &className) const;
        bool hasVariable(const QString &variable) const;

        void addTransientVariable(const QString &variable, const QSArgument &arg, QObject *context=0);
        QSArgument variable(const QString &variable, QObject *context=0) const;

        QObjectList presentObjects() const;
        void addTransientObject( QObject *object );

        bool isRunning() const;

        void throwError( const QString &message );

        void addObjectFactory( QSObjectFactory *factory );
        void addWrapperFactory( QSWrapperFactory *factory );

        QSStackTrace stackTrace() const;
        QString errorMessage() const;
        bool hadError() const;

        void addTransientSignalHandler( QObject *sender,
    				    const char *signal,
    				    const char *qtscriptFunction );

        void removeTransientSignalHandler( QObject *sender,
    				       const char *signal,
    				       const char *qtscriptFunction );

        void setTimeoutInterval(int msecs);
        int timeoutInterval() const;

    public slots:
        void clear();
        void stopExecution();

    signals:
        void error( const QString &message, const QString &scriptName,
    		int lineNumber );
        void error( const QString &message, QObject *context,
    		const QString &scriptName, int lineNumber );

        void timeout(int runnningTime);

    private:
        // disabled copy constructor and assignment operator
        QSInterpreter( const QSInterpreter & );
        QSInterpreter& operator=( const QSInterpreter & );
        QSInterpreter( QSProject *project, const char *name = 0);

        void init();

        // used by factory classes
        QuickInterpreter *interpreter() const;

        void removeObjectFactory( QSObjectFactory *factory );
        void removeWrapperFactory( QSWrapperFactory *factory );

    private slots:
        void runtimeError( const QString &message, const QString &filename, int lineNumber );
        void runtimeError();
        void parseError();

    private:
        QSInterpreterPrivate *d;

        uint running:1;
    };

    inline bool QSInterpreter::isRunning() const
    {
        return running;
    }

    #endif