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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, USA. */
#ifndef GEN_PERF_H
#define GEN_PERF_H
#include "Options.h"
#include "Key_List.h"
#include "Bool_Array.h"
#if defined (ACE_HAS_GPERF)
class Gen_Perf
{
// = TITLE
// Provides high-level routines to manipulate the keyword list
// structures the code generation output.
public:
// = Initialization and termination methods.
Gen_Perf (void);
// Constructor.
~Gen_Perf (void);
// Destructor
int run (void);
// Attempt to generate a perfect hash function.
private:
int open (void);
int change (List_Node *prior, List_Node *curr);
int affects_prev (char c, List_Node *curr);
int compute_perfect_hash (void);
int compute_binary_search (void);
int compute_linear_search (void);
static int hash (List_Node *key_node);
static int compute_disjoint_union (char *s1, char *s2, char *s3);
static void sort_set (char *union_set, int len);
int max_hash_value;
// Maximum possible hash value.
int fewest_collisions;
// Records fewest # of collisions for asso value.
int num_done;
// Number of keywords processed without a collision.
char *union_set;
// Disjoint union.
Key_List key_list;
// List of the keys we're trying to map into a perfect hash
// function.
Bool_Array char_search;
// Table that keeps track of key collisions.
};
#endif /* ACE_HAS_GPERF */
#endif /* GEN_PERF_H */
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