/* Base bitset stuff.
- Copyright (C) 2002, 2003 Free Software Foundation, Inc.
+
+ Copyright (C) 2002-2004, 2006, 2009-2012 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 2 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 3 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, write to the Free Software
-Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
+ You should have received a copy of the GNU General Public License
+ along with this program. If not, see <http://www.gnu.org/licenses/>. */
#ifndef _BBITSET_H
#define _BBITSET_H
#include <stdbool.h>
#include <limits.h>
+#include <stddef.h>
-/* Currently we support three flavours of bitsets:
+/* Currently we support five flavours of bitsets:
BITSET_ARRAY: Array of bits (fixed size, fast for dense bitsets).
- BITSET_LIST: Linked list of array of bits (variable size, least storage
- for large very sparse sets).
- BITSET_TABLE: Expandable table of pointers to array of bits
- (variable size, less storage for large sparse sets).
-
- BITSET_STATS: Wrapper bitset for internal use only.
+ Memory for bit array and bitset structure allocated
+ contiguously.
+ BITSET_LIST: Linked list of arrays of bits (variable size, least storage
+ for large very sparse sets).
+ 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
+ dense bitsets).
+ BITSET_STATS: Wrapper bitset for internal use only. Used for gathering
+ statistics and/or better run-time checking.
*/
-enum bitset_type {BITSET_ARRAY, BITSET_LIST, BITSET_TABLE, BITSET_TYPE_NUM,
- BITSET_STATS};
-#define BITSET_TYPE_NAMES {"abitset", "lbitset", "ebitset"}
+enum bitset_type {BITSET_ARRAY, BITSET_LIST, BITSET_TABLE, BITSET_VARRAY,
+ BITSET_TYPE_NUM, BITSET_STATS};
+#define BITSET_TYPE_NAMES {"abitset", "lbitset", "ebitset", "vbitset"}
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 bitset_word;
-#define BITSET_WORD_BITS ((unsigned) (CHAR_BIT * sizeof (bitset_word)))
+typedef unsigned long int bitset_word;
+#define BITSET_WORD_BITS ((unsigned int) (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
#define BITSET_LIST_SIZE 1024
enum bitset_ops {BITSET_OP_ZERO, BITSET_OP_ONES,
- BITSET_OP_COPY, BITSET_OP_NOT,
- BITSET_OP_EMPTY_P, BITSET_OP_EQUAL_P,
- BITSET_OP_SUBSET_P, BITSET_OP_DISJOINT_P,
- BITSET_OP_AND, BITSET_OP_OR, BITSET_OP_XOR, BITSET_OP_ANDN,
- BITSET_OP_OR_AND, BITSET_OP_AND_OR, BITSET_OP_ANDN_OR};
+ BITSET_OP_COPY, BITSET_OP_NOT,
+ BITSET_OP_EMPTY_P, BITSET_OP_EQUAL_P,
+ BITSET_OP_SUBSET_P, BITSET_OP_DISJOINT_P,
+ BITSET_OP_AND, BITSET_OP_OR, BITSET_OP_XOR, BITSET_OP_ANDN,
+ BITSET_OP_OR_AND, BITSET_OP_AND_OR, BITSET_OP_ANDN_OR};
struct bbitset_struct
{
- const struct bitset_vtable * vtable;
- bitset_windex cindex; /* Cache word index. */
- bitset_windex csize; /* Cache size in words. */
- bitset_word *cdata; /* Cache data pointer. */
+ const struct bitset_vtable *vtable;
+ bitset_windex cindex; /* Cache word index. */
+ bitset_windex csize; /* Cache size in words. */
+ bitset_word *cdata; /* Cache data pointer. */
+ bitset_bindex n_bits; /* Number of bits. */
/* Perhaps we could sacrifice another word to indicate
that the bitset is known to be zero, that a bit has been set
in the cache, and that a bit has been cleared in the cache.
typedef union bitset_union *bitset;
+/* Private accessor macros to bitset structure. */
+#define BITSET_VTABLE_(SRC) (SRC)->b.vtable
+#define BITSET_CINDEX_(SRC) (SRC)->b.cindex
+#define BITSET_CDATA_(SRC) (SRC)->b.cdata
+#define BITSET_CSIZE_(SRC) (SRC)->b.csize
+#define BITSET_NBITS_(SRC) (SRC)->b.n_bits
+
+
/* The contents of this structure should be considered private. */
struct bitset_vtable
{
- 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 (*size) PARAMS ((bitset));
- bitset_bindex (*count) PARAMS ((bitset));
-
- bool (*empty_p) PARAMS ((bitset));
- void (*ones) PARAMS ((bitset));
- void (*zero) PARAMS ((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) 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) 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) PARAMS ((bitset, bitset_bindex *,
- bitset_bindex, bitset_bindex *));
- bitset_bindex (*list_reverse) PARAMS ((bitset,
- bitset_bindex *, bitset_bindex,
- bitset_bindex *));
- void (*free) PARAMS ((bitset));
+ 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);
+
+ bool (*empty_p) (bitset);
+ void (*ones) (bitset);
+ void (*zero) (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 (*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_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);
+
+ bitset_bindex (*list) (bitset, bitset_bindex *, bitset_bindex,
+ bitset_bindex *);
+ bitset_bindex (*list_reverse) (bitset, bitset_bindex *, bitset_bindex,
+ bitset_bindex *);
+ void (*free) (bitset);
enum bitset_type type;
};
-#define BITSET_COMPATIBLE_(BSET1, BSET2) ((BSET1)->b.vtable == (BSET2)->b.vtable)
+#define BITSET_COMPATIBLE_(BSET1, BSET2) \
+((BSET1)->b.vtable == (BSET2)->b.vtable)
#define BITSET_CHECK2_(DST, SRC) \
if (!BITSET_COMPATIBLE_ (DST, SRC)) abort ();
|| !BITSET_COMPATIBLE_ (DST, SRC3)) abort ();
+/* Redefine number of bits in bitset DST. */
+#define BITSET_RESIZE_(DST, SIZE) (DST)->b.vtable->resize (DST, SIZE)
+
/* Return size in bits of bitset SRC. */
#define BITSET_SIZE_(SRC) (SRC)->b.vtable->size (SRC)
#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. */
#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)
/* Private functions for bitset implementations. */
-extern bool bitset_toggle_ PARAMS ((bitset, bitset_bindex));
+extern bool bitset_toggle_ (bitset, bitset_bindex);
+
+extern bitset_bindex bitset_count_ (bitset);
-extern bitset_bindex bitset_count_ PARAMS ((bitset));
+extern bitset_bindex bitset_size_ (bitset);
-extern bool bitset_copy_ PARAMS ((bitset, bitset));
+extern bool bitset_copy_ (bitset, bitset);
-extern void bitset_and_or_ PARAMS ((bitset, bitset, bitset, bitset));
+extern void bitset_and_or_ (bitset, bitset, bitset, bitset);
-extern bool bitset_and_or_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
+extern bool bitset_and_or_cmp_ (bitset, bitset, bitset, bitset);
-extern void bitset_andn_or_ PARAMS ((bitset, bitset, bitset, bitset));
+extern void bitset_andn_or_ (bitset, bitset, bitset, bitset);
-extern bool bitset_andn_or_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
+extern bool bitset_andn_or_cmp_ (bitset, bitset, bitset, bitset);
-extern void bitset_or_and_ PARAMS ((bitset, bitset, bitset, bitset));
+extern void bitset_or_and_ (bitset, bitset, bitset, bitset);
-extern bool bitset_or_and_cmp_ PARAMS ((bitset, bitset, bitset, bitset));
+extern bool bitset_or_and_cmp_ (bitset, bitset, bitset, bitset);
#endif /* _BBITSET_H */
projects / bison.git / blobdiff