| /**************************************************************/ |
| /* ********************************************************** */ |
| /* * * */ |
| /* * SIGNATURE TABLE * */ |
| /* * * */ |
| /* * $Module: TABLE * */ |
| /* * * */ |
| /* * Copyright (C) 1999, 2000, 2001 MPI fuer Informatik * */ |
| /* * * */ |
| /* * 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 * */ |
| /* * * */ |
| /* * * */ |
| /* $Revision$ * */ |
| /* $State$ * */ |
| /* $Date$ * */ |
| /* $Author$ * */ |
| /* * * */ |
| /* * Contact: * */ |
| /* * Christoph Weidenbach * */ |
| /* * MPI fuer Informatik * */ |
| /* * Stuhlsatzenhausweg 85 * */ |
| /* * 66123 Saarbruecken * */ |
| /* * Email: weidenb@mpi-sb.mpg.de * */ |
| /* * Germany * */ |
| /* * * */ |
| /* ********************************************************** */ |
| /**************************************************************/ |
| |
| /* module manages signature tables i. e. tables of terms (including the empty */ |
| /* term NULL) where the lookup key is the tuple of top symbol index and */ |
| /* arguments' equivalence classes with respect to a partition p, the */ |
| /* _p-signature_ (sigtab_Index(top symbol), [arg 1] , ..., [arg n] ) */ |
| /* p p */ |
| |
| #ifndef _TABLE_ |
| #define _TABLE_ |
| |
| |
| /**************************************************************/ |
| /* Includes */ |
| /**************************************************************/ |
| |
| #include "term.h" |
| #include "partition.h" |
| |
| |
| /**************************************************************/ |
| /* Basic types */ |
| /**************************************************************/ |
| |
| typedef struct termarray { |
| TERM term; |
| int stamp; |
| struct termarray *child; |
| } *TERMARRAY; |
| |
| typedef struct table { |
| TERMARRAY ta, *pos; |
| int *posstamp, stampcounter, opbound, varbound, termbound; |
| } |
| *TABLE; |
| |
| /* a signature table is an "array of terms allocated by need" (i. e. a tree */ |
| /* where the nodes of the same layer represent array entries with the same */ |
| /* dimension), an array of positions in this "array", stamps for the */ |
| /* positions, the stamp counter and bounds for the operator symbol, variable */ |
| /* and term indices of the terms to be stored in the signature table (i. e. */ |
| /* for every such term its top symbol index has to be in [1, opbound] and the */ |
| /* term numbers of its arguments in [0, termbound] - or its variable index in */ |
| /* [1, varbound] if it is a variable) */ |
| |
| |
| /**************************************************************/ |
| /* Prototypes */ |
| /**************************************************************/ |
| |
| TABLE table_Null(void); |
| TABLE table_Create(int, int, int); |
| void table_Free(TABLE); |
| TABLE table_Init(TABLE, int, int, int); |
| TERM table_QueryAndEnter(TABLE, PARTITION, TERM); |
| TABLE table_Delete(TABLE, TERM); |
| |
| |
| #endif |
| |
