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