File: word_info.h

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/*
**	SWISH++
**	word_info.h
**
**	Copyright (C) 1998  Paul J. Lucas
**
**	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., 675 Mass Ave, Cambridge, MA 02139, USA.
*/

#ifndef	word_info_H
#define	word_info_H

// standard
#include <list>
#include <map>
#include <string>

// local
#include "fake_ansi.h"

//*****************************************************************************
//
// SYNOPSIS
//
	class word_info
//
// DESCRIPTION
//
//	An instance of this class stores information for a word in the index
//	being generated.
//
//*****************************************************************************
{
public:
	struct file {
		int		index_;		// occurs in i-th file
		union {
			int	occurrences_;	// in this file only
			int	rank_;
		};

		explicit file( int i ) : index_( i ), occurrences_( 1 ) { }
	};

	typedef std::list< file > file_set;

	file_set	files_;
	int		occurrences_;		// over all files

	word_info() : occurrences_( 0 ) { }
};

typedef std::map< std::string, word_info > word_map;

#endif	/* word_info_H */