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// -*- C++ -*-
/**
* $Id$
*
* Copyright (C) 1989 Free Software Foundation, Inc.
* written by Douglas C. Schmidt (schmidt@cs.wustl.edu)
*
* This file is part of GNU GPERF.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifndef ITERATOR_H
#define ITERATOR_H
#include "ace/config-all.h"
#if !defined (ACE_LACKS_PRAGMA_ONCE)
# pragma once
#endif /* ACE_LACKS_PRAGMA_ONCE */
#include "Options.h"
#include "ace/Copy_Disabled.h"
/**
* Provides an Iterator that expands and decodes a control string
* containing digits and ranges, returning an integer every time the
* generator function is called.
*
* This class is used to decode the user's key position requests.
* For example: "-k 1,2,5-10,$" will return 1, 2, 5, 6, 7, 8, 9,
* 10, and 0 ( representing the abstract ``last character of the
* key'' on successive calls to the member function operator ().
* No errors are handled in these routines, they are passed back
* to the calling routines via a user-supplied Error_Value
*/
class Iterator : private ACE_Copy_Disabled
{
public:
Iterator (char *s,
int lo,
int hi,
int word_end,
int bad_val,
int key_end);
int operator () (void);
private:
/// A pointer to the string provided by the user.
char *str;
/// Value returned after last key is processed.
int end;
/// A value marking the abstract ``end of word'' (usually '$').
int end_word;
/// Error value returned when input is syntactically erroneous.
int error_value;
/// Greatest possible value, inclusive.
int hi_bound;
/// Smallest possible value, inclusive.
int lo_bound;
};
#endif /* ITERATOR_H */
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