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qscriptfunction_p.h

/****************************************************************************
**
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**
** This file is part of the QtScript module of the Qt Toolkit.
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** License versions 2.0 or 3.0 as published by the Free Software
** Foundation and appearing in the files LICENSE.GPL2 and LICENSE.GPL3
** included in the packaging of this file.  Alternatively you may (at
** your option) use any later version of the GNU General Public
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** (or its successors, if any) and the KDE Free Qt Foundation. In
** addition, as a special exception, Trolltech gives you certain
** additional rights. These rights are described in the Trolltech GPL
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** GPL_EXCEPTION.txt in this package.
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#ifndef QSCRIPTFUNCTION_P_H
#define QSCRIPTFUNCTION_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 "qscriptobjectdata_p.h"

#ifndef QT_NO_SCRIPT

#include "qscriptglobals_p.h"
#include "qscriptcontext_p.h"
#include "qscriptnodepool_p.h"

#include <QtCore/QList>
#ifndef QT_NO_QOBJECT
#include <QtCore/QPointer>
#include <QtCore/QMetaMethod>
#endif

class QScriptContext;
class QScriptNameIdImpl;

class QScriptFunction: public QScriptObjectData
{
public:
    enum Type {
        Unknown,
        Script,
        C,
        C2,
        Qt,
        QtProperty
    };

    QScriptFunction(int len = 0)
        : length(len)
        { }
    virtual ~QScriptFunction();

    virtual void execute(QScriptContextPrivate *context) = 0;
    virtual QString toString(QScriptContextPrivate *context) const;

    virtual Type type() const { return Unknown; }

    // name of the file the function is defined in
    virtual QString fileName() const;

    virtual QString functionName() const;

public: // ### private
    int length;
    QList<QScriptNameIdImpl*> formals; // ### mark the formals
};

namespace QScript {

// public API function
class CFunction: public QScriptFunction
{
public:
    CFunction(QScriptFunctionSignature funPtr, int length)
        : QScriptFunction(length), m_funPtr(funPtr)
        { }

    virtual ~CFunction() { }

    virtual void execute(QScriptContextPrivate *context);

    virtual Type type() const { return QScriptFunction::C; }

    virtual QString functionName() const;

private:
    QScriptFunctionSignature m_funPtr;
};

// internal API function
class C2Function: public QScriptFunction
{
public:
    C2Function(QScriptInternalFunctionSignature funPtr, int length,
               QScriptClassInfo *classInfo)
        : QScriptFunction(length), m_funPtr(funPtr),
          m_classInfo(classInfo)
        { }

    virtual ~C2Function() {}

    virtual void execute(QScriptContextPrivate *context);

    virtual Type type() const { return QScriptFunction::C2; }

    virtual QString functionName() const;

private:
    QScriptInternalFunctionSignature m_funPtr;
    QScriptClassInfo *m_classInfo;
};

namespace AST {
    class FunctionExpression;
}

// implemented in qscriptcontext_p.cpp
class ScriptFunction: public QScriptFunction
{
public:
    ScriptFunction(AST::FunctionExpression *definition, NodePool *astPool):
        m_definition(definition), m_astPool(astPool), m_compiledCode(0) {}

    virtual ~ScriptFunction() {}

    virtual void execute(QScriptContextPrivate *context);

    virtual QString toString(QScriptContextPrivate *context) const;

    virtual Type type() const
    { return QScriptFunction::Script; }

    virtual QString fileName() const;

    virtual QString functionName() const;

private:
    AST::FunctionExpression *m_definition;
    QExplicitlySharedDataPointer<NodePool> m_astPool;
    Code *m_compiledCode;
};

} // namespace QScript

#endif // QT_NO_SCRIPT
#endif


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