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// -*- c-basic-offset: 2 -*-
/*
* This file is part of the KDE libraries
* Copyright (C) 1999-2001 Harri Porten (porten@kde.org)
* Copyright (C) 2001 Peter Kelly (pmk@post.com)
* Copyright (C) 2003 Apple Computer, Inc
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Library General Public
* License as published by the Free Software Foundation; either
* version 2 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Library General Public License for more details.
*
* You should have received a copy of the GNU Library General Public License
* along with this library; see the file COPYING.LIB. If not, write to
* the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301, USA.
*
*/
#ifndef _KJS_COMPLETION_H_
#define _KJS_COMPLETION_H_
#include "CommonIdentifiers.h"
namespace KJS {
typedef unsigned Addr; // ### should there be some separare types h?
class Node;
class JSValue;
/**
* Completion types.
*/
enum ComplType { Normal, Break, Continue, ReturnValue, Throw, Interrupted };
/**
* Completion objects are used to convey the return status and value
* from functions.
*
* See FunctionImp::execute()
*
* @see FunctionImp
*
* @short Handle for a Completion type.
*/
class KJS_EXPORT Completion {
public:
explicit Completion(ComplType c = Normal, JSValue *v = NULL, Addr t = 0 )
: comp(c), val(v), tar(t) { }
/**
* Returns the type of this completion.
*/
ComplType complType() const { return comp; }
/**
* Returns the value of this completion if it is of type
* value-completion, 0 otherwise.
*/
JSValue *value() const { return val; }
/**
* Returns the address a break or a continue statement targets
*/
Addr target() const { return tar; }
/**
* Returns true if this is a value completion, false otherwise.
*/
bool isValueCompletion() const { return !!val; }
private:
ComplType comp;
JSValue *val;
Addr tar;
};
}
#endif
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