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Import of 2003-06-08 libbitset <http://mail.gnu.org/archive/html/bison-patches/2003-06/msg00005.html>

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This commit is contained in:
Paul Eggert
2003-06-05 10:33:45 +00:00
parent 964db18ed6
commit 4bfd57ce09
1 changed files with 66 additions and 63 deletions
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129
lib/bbitset.h
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@@ -1,28 +1,30 @@
/* Base bitset stuff.
Copyright (C) 2002, 2003, 2004, 2006 Free Software Foundation, Inc.
Copyright (C) 2002, 2003 Free Software Foundation, Inc.
Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
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 3 of the License, or
(at your option) any later version.
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.
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, see <http://www.gnu.org/licenses/>. */
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. */
#ifndef _BBITSET_H
#define _BBITSET_H
#include "config.h"
#include "libiberty.h"
#include <stdbool.h>
#include <limits.h>
#include <stddef.h>
#include <sys/types.h>
/* Currently we support five flavours of bitsets:
BITSET_ARRAY: Array of bits (fixed size, fast for dense bitsets).
@@ -33,7 +35,7 @@
BITSET_TABLE: Expandable table of pointers to arrays of bits
(variable size, less storage for large sparse sets).
Faster than BITSET_LIST for random access.
BITSET_VARRAY: Variable array of bits (variable size, fast for
BITSET_VARRAY: Variable array of bits (variable size, fast for
dense bitsets).
BITSET_STATS: Wrapper bitset for internal use only. Used for gathering
statistics and/or better run-time checking.
@@ -47,8 +49,8 @@ extern const char * const bitset_type_names[];
enum bitset_alloc_type {BITSET_MALLOC, BITSET_OBALLOC};
/* Data type used to store a word of bits. */
typedef unsigned long int bitset_word;
#define BITSET_WORD_BITS ((unsigned int) (CHAR_BIT * sizeof (bitset_word)))
typedef unsigned long bitset_word;
#define BITSET_WORD_BITS ((unsigned) (CHAR_BIT * sizeof (bitset_word)))
/* Bit index. In theory we might need a type wider than size_t, but
in practice we lose at most a factor of CHAR_BIT by going with
@@ -110,45 +112,46 @@ typedef union bitset_union *bitset;
/* The contents of this structure should be considered private. */
struct bitset_vtable
{
void (*set) (bitset, bitset_bindex);
void (*reset) (bitset, bitset_bindex);
bool (*toggle) (bitset, bitset_bindex);
bool (*test) (bitset, bitset_bindex);
bitset_bindex (*resize) (bitset, bitset_bindex);
bitset_bindex (*size) (bitset);
bitset_bindex (*count) (bitset);
void (*set) PARAMS ((bitset, bitset_bindex));
void (*reset) PARAMS ((bitset, bitset_bindex));
bool (*toggle) PARAMS ((bitset, bitset_bindex));
bool (*test) PARAMS ((bitset, bitset_bindex));
bitset_bindex (*resize) PARAMS ((bitset, bitset_bindex));
bitset_bindex (*size) PARAMS ((bitset));
bitset_bindex (*count) PARAMS ((bitset));
bool (*empty_p) (bitset);
void (*ones) (bitset);
void (*zero) (bitset);
bool (*empty_p) PARAMS ((bitset));
void (*ones) PARAMS ((bitset));
void (*zero) PARAMS ((bitset));
void (*copy) (bitset, bitset);
bool (*disjoint_p) (bitset, bitset);
bool (*equal_p) (bitset, bitset);
void (*not_) (bitset, bitset);
bool (*subset_p) (bitset, bitset);
void (*copy) PARAMS ((bitset, bitset));
bool (*disjoint_p) PARAMS ((bitset, bitset));
bool (*equal_p) PARAMS ((bitset, bitset));
void (*not) PARAMS ((bitset, bitset));
bool (*subset_p) PARAMS ((bitset, bitset));
void (*and_) (bitset, bitset, bitset);
bool (*and_cmp) (bitset, bitset, bitset);
void (*andn) (bitset, bitset, bitset);
bool (*andn_cmp) (bitset, bitset, bitset);
void (*or_) (bitset, bitset, bitset);
bool (*or_cmp) (bitset, bitset, bitset);
void (*xor_) (bitset, bitset, bitset);
bool (*xor_cmp) (bitset, bitset, bitset);
void (*and) PARAMS ((bitset, bitset, bitset));
bool (*and_cmp) PARAMS ((bitset, bitset, bitset));
void (*andn) PARAMS ((bitset, bitset, bitset));
bool (*andn_cmp) PARAMS ((bitset, bitset, bitset));
void (*or) PARAMS ((bitset, bitset, bitset));
bool (*or_cmp) PARAMS ((bitset, bitset, bitset));
void (*xor) PARAMS ((bitset, bitset, bitset));
bool (*xor_cmp) PARAMS ((bitset, bitset, bitset));
void (*and_or) (bitset, bitset, bitset, bitset);
bool (*and_or_cmp) (bitset, bitset, bitset, bitset);
void (*andn_or) (bitset, bitset, bitset, bitset);
bool (*andn_or_cmp) (bitset, bitset, bitset, bitset);
void (*or_and) (bitset, bitset, bitset, bitset);
bool (*or_and_cmp) (bitset, bitset, bitset, bitset);
void (*and_or) PARAMS ((bitset, bitset, bitset, bitset));
bool (*and_or_cmp) PARAMS ((bitset, bitset, bitset, bitset));
void (*andn_or) PARAMS ((bitset, bitset, bitset, bitset));
bool (*andn_or_cmp) PARAMS ((bitset, bitset, bitset, bitset));
void (*or_and) PARAMS ((bitset, bitset, bitset, bitset));
bool (*or_and_cmp) PARAMS ((bitset, bitset, bitset, bitset));
bitset_bindex (*list) (bitset, bitset_bindex *, bitset_bindex,
bitset_bindex *);
bitset_bindex (*list_reverse) (bitset, bitset_bindex *, bitset_bindex,
bitset_bindex *);
void (*free) (bitset);
bitset_bindex (*list) PARAMS ((bitset, bitset_bindex *,
bitset_bindex, bitset_bindex *));
bitset_bindex (*list_reverse) PARAMS ((bitset,
bitset_bindex *, bitset_bindex,
bitset_bindex *));
void (*free) PARAMS ((bitset));
enum bitset_type type;
};
@@ -217,14 +220,14 @@ if (!BITSET_COMPATIBLE_ (DST, SRC1) || !BITSET_COMPATIBLE_ (DST, SRC2) \
#define BITSET_EQUAL_P_(DST, SRC) (SRC)->b.vtable->equal_p (DST, SRC)
/* DST = ~SRC. */
#define BITSET_NOT_(DST, SRC) (SRC)->b.vtable->not_ (DST, SRC)
#define BITSET_NOT_(DST, SRC) (SRC)->b.vtable->not (DST, SRC)
/* Return DST == DST | SRC. */
#define BITSET_SUBSET_P_(DST, SRC) (SRC)->b.vtable->subset_p (DST, SRC)
/* DST = SRC1 & SRC2. */
#define BITSET_AND_(DST, SRC1, SRC2) (SRC1)->b.vtable->and_ (DST, SRC1, SRC2)
#define BITSET_AND_(DST, SRC1, SRC2) (SRC1)->b.vtable->and (DST, SRC1, SRC2)
#define BITSET_AND_CMP_(DST, SRC1, SRC2) (SRC1)->b.vtable->and_cmp (DST, SRC1, SRC2)
/* DST = SRC1 & ~SRC2. */
@@ -232,11 +235,11 @@ if (!BITSET_COMPATIBLE_ (DST, SRC1) || !BITSET_COMPATIBLE_ (DST, SRC2) \
#define BITSET_ANDN_CMP_(DST, SRC1, SRC2) (SRC1)->b.vtable->andn_cmp (DST, SRC1, SRC2)
/* DST = SRC1 | SRC2. */
#define BITSET_OR_(DST, SRC1, SRC2) (SRC1)->b.vtable->or_ (DST, SRC1, SRC2)
#define BITSET_OR_(DST, SRC1, SRC2) (SRC1)->b.vtable->or (DST, SRC1, SRC2)
#define BITSET_OR_CMP_(DST, SRC1, SRC2) (SRC1)->b.vtable->or_cmp (DST, SRC1, SRC2)
/* DST = SRC1 ^ SRC2. */
#define BITSET_XOR_(DST, SRC1, SRC2) (SRC1)->b.vtable->xor_ (DST, SRC1, SRC2)
#define BITSET_XOR_(DST, SRC1, SRC2) (SRC1)->b.vtable->xor (DST, SRC1, SRC2)
#define BITSET_XOR_CMP_(DST, SRC1, SRC2) (SRC1)->b.vtable->xor_cmp (DST, SRC1, SRC2)
@@ -278,24 +281,24 @@ if (!BITSET_COMPATIBLE_ (DST, SRC1) || !BITSET_COMPATIBLE_ (DST, SRC2) \
/* Private functions for bitset implementations. */
extern bool bitset_toggle_ (bitset, bitset_bindex);
extern bool bitset_toggle_ PARAMS ((bitset, bitset_bindex));
extern bitset_bindex bitset_count_ (bitset);
extern bitset_bindex bitset_count_ PARAMS ((bitset));
extern bitset_bindex bitset_size_ (bitset);
extern bitset_bindex bitset_size_ PARAMS ((bitset));
extern bool bitset_copy_ (bitset, bitset);
extern bool bitset_copy_ PARAMS ((bitset, bitset));
extern void bitset_and_or_ (bitset, bitset, bitset, bitset);
extern void bitset_and_or_ PARAMS ((bitset, bitset, bitset, bitset));
extern bool bitset_and_or_cmp_ (bitset, bitset, bitset, bitset);
extern bool bitset_and_or_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
extern void bitset_andn_or_ (bitset, bitset, bitset, bitset);
extern void bitset_andn_or_ PARAMS ((bitset, bitset, bitset, bitset));
extern bool bitset_andn_or_cmp_ (bitset, bitset, bitset, bitset);
extern bool bitset_andn_or_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
extern void bitset_or_and_ (bitset, bitset, bitset, bitset);
extern void bitset_or_and_ PARAMS ((bitset, bitset, bitset, bitset));
extern bool bitset_or_and_cmp_ (bitset, bitset, bitset, bitset);
extern bool bitset_or_and_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
#endif /* _BBITSET_H */