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* lib/bitset.c, lib/bitset.h, lib/bitsetv.c, lib/bitsetv.h,
* lib/ebitset.c, lib/ebitset.h, lib/lbitset.c, lib/lbitset.h, * lib/sbitset.c, lib/sbitset.h, lib/bbitset.h: Update from the latest sources from Michael.
This commit is contained in:
Akim Demaille
275
lib/bbitset.h
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275
lib/bbitset.h
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/* Base bitset stuff.
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Copyright (C) 2002 Free Software Foundation, Inc.
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Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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#ifndef _BBITSET_H
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#define _BBITSET_H
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/* Bison modifications: BEGIN. */
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#define IN_BISON 1
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#if IN_BISON
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# if HAVE_CONFIG_H
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# include <config.h>
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# endif
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# include <stdlib.h>
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# define BITSET_STATS 1
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/* This file is the public interface to the bitset abstract data type.
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Only use the functions and macros defined in this file. */
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# ifndef PARAMS
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# if defined PROTOTYPES || (defined __STDC__ && __STDC__)
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# define PARAMS(Args) Args
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# else
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# define PARAMS(Args) ()
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# endif
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# endif
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# ifndef __attribute__
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# if __GNUC__ < 2 || (__GNUC__ == 2 && __GNUC_MINOR__ < 8) || __STRICT_ANSI__
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# define __attribute__(x)
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# endif
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# endif
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# ifndef ATTRIBUTE_NORETURN
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# define ATTRIBUTE_NORETURN __attribute__ ((__noreturn__))
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# endif
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# ifndef ATTRIBUTE_UNUSED
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# define ATTRIBUTE_UNUSED __attribute__ ((__unused__))
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# endif
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# include "xalloc.h"
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#else /* ! IN_BISON */
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# include "libiberty.h"
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#endif
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#ifdef HAVE_LIMITS_H
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#include <limits.h>
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#endif
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/* Currently we support three flavours of bitsets:
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BITSET_ARRAY: Array of bits (fixed size, faster).
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BITSET_LIST: Linked list of array of bits (variable size, least storage
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for large very sparse sets).
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BITSET_TABLE: Expandable table of pointers to array of bits
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(variable size, less storage for large sparse sets).
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*/
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enum bitset_type {BITSET_ARRAY, BITSET_LIST, BITSET_TABLE, BITSET_TYPE_NUM};
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#define BITSET_TYPE_NAMES {"sbitset", "lbitset", "ebitset"}
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/* Non-zero to enable bitset caching. */
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#define BITSET_CACHE 1
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/* Non-zero to use inline functions instead of macros. */
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#define BITSET_INLINE 0
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/* Non-zero to enable bitset statistics gathering. */
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#define BITSET_STATS 1
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/* Non-zero to enable bitset type checking. */
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#define BITSET_CHECK 1
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/* Data type used to store a word of bits. */
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typedef unsigned long bitset_word;
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#define BITSET_WORD_BITS ((unsigned) CHAR_BIT * sizeof (bitset_word))
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/* Bit index. */
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typedef unsigned long bitset_bindex;
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/* Word index. */
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typedef unsigned long bitset_windex;
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#define BITSET_INDEX_MAX ((1U << (BITSET_WORD_BITS - 1)))
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#define BITSET_MSB (1U << (BITSET_WORD_BITS - 1))
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#define BITSET_LIST_SIZE 1024
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enum bitset_ops {BITSET_OP_ZERO, BITSET_OP_ONES,
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BITSET_OP_COPY, BITSET_OP_NOT,
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BITSET_OP_EMPTY_P, BITSET_OP_EQUAL_P,
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BITSET_OP_SUBSET_P, BITSET_OP_DISJOINT_P,
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BITSET_OP_AND, BITSET_OP_OR, BITSET_OP_XOR,
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BITSET_OP_ANDN, BITSET_OP_ORN,
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BITSET_OP_OR_AND, BITSET_OP_AND_OR, BITSET_OP_ANDN_OR};
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/* Return size in bits of bitset SRC. */
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#define BITSET_SIZE_(SRC) (SRC)->b.ops->size (SRC)
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/* Return type of bitset SRC. */
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#define BITSET_TYPE_(DST) (DST)->b.ops->type
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/* Set bit BITNO in bitset DST. */
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#define BITSET_SET_(DST, BITNO) (DST)->b.ops->set (DST, BITNO)
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/* Reset bit BITNO in bitset DST. */
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#define BITSET_RESET_(DST, BITNO) (DST)->b.ops->reset (DST, BITNO)
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/* Return non-zero if bit BITNO in bitset SRC is set. */
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#define BITSET_TEST_(SRC, BITNO) (SRC)->b.ops->test (SRC, BITNO)
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/* Free bitset SRC. */
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#define BITSET_FREE_(SRC)\
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((SRC)->b.ops->free ? (SRC)->b.ops->free (SRC) :(void)0)
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/* Perform operation OP on DST. */
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#define BITSET_OP1_(DST, OP) (DST)->b.ops->op1 (DST, OP)
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/* Perform operation OP on SRC and store in DST. */
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#define BITSET_OP2_(DST, SRC, OP) (DST)->b.ops->op2 (DST, SRC, OP)
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/* DST = SRC1 OP SRC2. */
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#define BITSET_OP3_(DST, SRC1, SRC2, OP) \
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(DST)->b.ops->op3 (DST, SRC1, SRC2, OP)
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/* DST = (SRC1 OP1 SRC2) OP2 SRC3. */
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#define BITSET_OP4_(DST, SRC1, SRC2, SRC3, OP) \
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(DST)->b.ops->op4 (DST, SRC1, SRC2, SRC3, OP)
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/* DST = 0. */
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#define BITSET_ZERO_(DST) BITSET_OP1_ (DST, BITSET_OP_ZERO);
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/* DST = ~0. */
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#define BITSET_ONES_(DST) BITSET_OP1_ (DST, BITSET_OP_ONES);
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/* Return SRC == 0. */
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#define BITSET_EMPTY_P_(SRC) BITSET_OP1_ (SRC, BITSET_OP_EMPTY_P);
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/* Return DST == SRC. */
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#define BITSET_EQUAL_P_(DST, SRC) BITSET_OP2_ (DST, SRC, BITSET_OP_EQUAL_P)
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/* Return DST == DST | SRC. */
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#define BITSET_SUBSET_P_(DST, SRC) BITSET_OP2_ (DST, SRC, BITSET_OP_SUBSET_P)
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/* Return DST & SRC == 0. */
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#define BITSET_DISJOINT_P_(DST, SRC)\
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BITSET_OP2_ (DST, SRC, BITSET_OP_DISJOINT_P)
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/* DST = SRC. */
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#define BITSET_COPY_(DST, SRC) BITSET_OP2_ (DST, SRC, BITSET_OP_COPY)
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/* DST = ~SRC. */
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#define BITSET_NOT_(DST, SRC) BITSET_OP2_ (DST, SRC, BITSET_OP_NOT)
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/* DST = SRC1 | SRC2. */
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#define BITSET_OR_(DST, SRC1, SRC2) BITSET_OP3_ (DST, SRC1, SRC2,\
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BITSET_OP_OR)
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/* DST = SRC1 ^ SRC2. */
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#define BITSET_XOR_(DST, SRC1, SRC2) BITSET_OP3_ (DST, SRC1, SRC2,\
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BITSET_OP_XOR)
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/* DST = SRC1 & SRC2. */
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#define BITSET_AND_(DST, SRC1, SRC2) BITSET_OP3_ (DST, SRC1, SRC2, \
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BITSET_OP_AND)
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/* DST = SRC1 & ~SRC2. */
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#define BITSET_ANDN_(DST, SRC1, SRC2) BITSET_OP3_ (DST, SRC1, SRC2, \
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BITSET_OP_ANDN)
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/* DST = SRC1 | ~SRC2. */
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#define BITSET_ORN_(DST, SRC1, SRC2) BITSET_OP3_ (DST, SRC1, SRC2, \
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BITSET_OP_ORN)
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/* DST = (SRC1 & SRC2) | SRC3. Return non-zero if
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DST != (SRC1 & SRC2) | SRC3. */
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#define BITSET_AND_OR_(DST, SRC1, SRC2, SRC3)\
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BITSET_OP4_ (DST, SRC1, SRC2, SRC3, BITSET_OP_AND_OR)
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/* DST = (SRC1 | SRC2) & SRC3. Return non-zero if
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DST != (SRC1 | SRC2) & SRC3. */
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#define BITSET_OR_AND_(DST, SRC1, SRC2, SRC3)\
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BITSET_OP4_ (DST, SRC1, SRC2, SRC3, BITSET_OP_OR_AND)
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/* DST = (SRC1 & ~SRC2) | SRC3. Return non-zero if
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DST != (SRC1 & ~SRC2) | SRC3. */
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#define BITSET_ANDN_OR_(DST, SRC1, SRC2, SRC3)\
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BITSET_OP4_ (DST, SRC1, SRC2, SRC3, BITSET_OP_ANDN_OR)
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/* Find list of up to NUM bits set in BSET starting from and including
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*NEXT. Return with actual number of bits found and with *NEXT
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indicating where search stopped. */
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#define BITSET_LIST_(BSET, LIST, NUM, NEXT) \
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(BSET)->b.ops->list (BSET, LIST, NUM, NEXT)
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/* Find reverse list of up to NUM bits set in BSET starting from and
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including NEXT. Return with actual number of bits found and with
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*NEXT indicating where search stopped. */
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#define BITSET_REVERSE_LIST_(BSET, LIST, NUM, NEXT) \
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(BSET)->b.ops->reverse_list (BSET, LIST, NUM, NEXT)
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struct bbitset_struct
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{
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struct bitset_ops_struct *ops;
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bitset_windex cindex; /* Cache word index. */
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bitset_windex csize; /* Cache size in words. */
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bitset_word *cdata; /* Cache data pointer. */
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};
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typedef struct bitset_struct *bitset;
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/* The contents of this structure should be considered private. */
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struct bitset_ops_struct
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{
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void (*set) PARAMS ((struct bitset_struct *, bitset_bindex));
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void (*reset) PARAMS ((struct bitset_struct *, bitset_bindex));
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int (*test) PARAMS ((struct bitset_struct *, bitset_bindex));
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int (*size) PARAMS ((struct bitset_struct *));
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int (*op1) PARAMS ((struct bitset_struct *, enum bitset_ops));
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int (*op2) PARAMS ((struct bitset_struct *, struct bitset_struct *,
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enum bitset_ops));
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int (*op3) PARAMS ((struct bitset_struct *, struct bitset_struct *,
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struct bitset_struct *, enum bitset_ops));
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int (*op4) PARAMS ((struct bitset_struct *, struct bitset_struct *,
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struct bitset_struct *, struct bitset_struct *,
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enum bitset_ops));
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int (*list) PARAMS ((struct bitset_struct *, bitset_bindex *,
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bitset_bindex, bitset_bindex *));
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int (*reverse_list) PARAMS ((struct bitset_struct *, bitset_bindex *,
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bitset_bindex, bitset_bindex *));
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void (*free) PARAMS ((struct bitset_struct *));
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enum bitset_type type;
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};
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#define BITSET_COMPATIBLE_(BSET1, BSET2) ((BSET1)->b.ops == (BSET2)->b.ops)
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#if BITSET_CHECK
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#define BITSET_CHECK2_(DST, SRC) \
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if (!BITSET_COMPATIBLE_ (DST, SRC)) abort ();
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#define BITSET_CHECK3_(DST, SRC1, SRC2) \
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if (!BITSET_COMPATIBLE_ (DST, SRC1) \
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|| !BITSET_COMPATIBLE_ (DST, SRC2)) abort ();
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#define BITSET_CHECK4_(DST, SRC1, SRC2, SRC3) \
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if (!BITSET_COMPATIBLE_ (DST, SRC1) || !BITSET_COMPATIBLE_ (DST, SRC2) \
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|| !BITSET_COMPATIBLE_ (DST, SRC3)) abort ();
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#else
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#define BITSET_CHECK2_(DST, SRC)
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#define BITSET_CHECK3_(DST, SRC1, SRC2)
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#define BITSET_CHECK4_(DST, SRC1, SRC2, SRC3)
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#endif
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extern int bitset_op4 PARAMS ((bitset, bitset, bitset, bitset,
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enum bitset_ops op));
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#endif /* _BBITSET_H */
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