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