X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/04af9e52679a9c9c983078bad2643d22023b4999..57bb17ca85234fac91bfb25dfdb10f01eabe0138:/lib/bitset.h?ds=sidebyside diff --git a/lib/bitset.h b/lib/bitset.h index 06427c38..45c8818c 100644 --- a/lib/bitset.h +++ b/lib/bitset.h @@ -1,5 +1,5 @@ /* Generic bitsets. - Copyright (C) 2002 Free Software Foundation, Inc. + Copyright (C) 2002, 2003, 2004 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 @@ -14,7 +14,7 @@ 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. */ +Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. */ #ifndef _BITSET_H #define _BITSET_H @@ -26,6 +26,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ #include "obstack.h" #include +#if USE_UNLOCKED_IO +# include "unlocked-io.h" +#endif + /* Attributes used to select a bitset implementation. */ enum bitset_attr {BITSET_FIXED = 1, /* Bitset size fixed. */ BITSET_VARIABLE = 2, /* Bitset size variable. */ @@ -44,12 +48,11 @@ union bitset_union { /* This must be the first member of every other structure that is a member of this union. */ - struct bbitset_struct b; + struct bbitset_struct b; /* Base bitset data. */ struct abitset_struct { struct bbitset_struct b; - bitset_bindex n_bits; /* Number of bits. */ bitset_word words[1]; /* The array of bits. */ } a; @@ -72,6 +75,13 @@ union bitset_union struct bbitset_struct b; bitset bset; } s; + + struct vbitset_struct + { + struct bbitset_struct b; + bitset_windex size; /* Allocated size of array. */ + } v; + }; @@ -87,47 +97,45 @@ typedef struct /* Return bytes required for bitset of desired type and size. */ -extern size_t bitset_bytes PARAMS ((enum bitset_type, bitset_bindex)); +extern size_t bitset_bytes (enum bitset_type, bitset_bindex); /* Initialise a bitset with desired type and size. */ -extern bitset bitset_init PARAMS ((bitset, bitset_bindex, enum bitset_type)); +extern bitset bitset_init (bitset, bitset_bindex, enum bitset_type); /* Select an implementation type based on the desired bitset size and attributes. */ -extern enum bitset_type bitset_type_choose PARAMS ((bitset_bindex, - bitset_attrs)); +extern enum bitset_type bitset_type_choose (bitset_bindex, bitset_attrs); /* Create a bitset of desired type and size. The bitset is zeroed. */ -extern bitset bitset_alloc PARAMS ((bitset_bindex, enum bitset_type)); +extern bitset bitset_alloc (bitset_bindex, enum bitset_type); /* Free bitset. */ -extern void bitset_free PARAMS ((bitset)); +extern void bitset_free (bitset); /* Create a bitset of desired type and size using an obstack. The bitset is zeroed. */ -extern bitset bitset_obstack_alloc PARAMS ((struct obstack *bobstack, - bitset_bindex, enum bitset_type)); +extern bitset bitset_obstack_alloc (struct obstack *bobstack, + bitset_bindex, enum bitset_type); /* Free bitset allocated on obstack. */ -extern void bitset_obstack_free PARAMS ((bitset)); +extern void bitset_obstack_free (bitset); /* Create a bitset of desired size and attributes. The bitset is zeroed. */ -extern bitset bitset_create PARAMS ((bitset_bindex, bitset_attrs)); +extern bitset bitset_create (bitset_bindex, bitset_attrs); /* Return bitset type. */ -extern enum bitset_type bitset_type_get PARAMS ((bitset)); +extern enum bitset_type bitset_type_get (bitset); /* Return bitset type name. */ -extern const char *bitset_type_name_get PARAMS ((bitset)); +extern const char *bitset_type_name_get (bitset); -#if BITSET_INLINE /* Set bit BITNO in bitset BSET. */ static inline void bitset_set (bitset bset, bitset_bindex bitno) { - bitset_windex index = bitno / BITSET_WORD_BITS; - bitset_windex offset = index - bset->b.cindex; + bitset_windex windex = bitno / BITSET_WORD_BITS; + bitset_windex offset = windex - bset->b.cindex; if (offset < bset->b.csize) bset->b.cdata[offset] |= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS)); @@ -140,8 +148,8 @@ bitset_set (bitset bset, bitset_bindex bitno) static inline void bitset_reset (bitset bset, bitset_bindex bitno) { - bitset_windex index = bitno / BITSET_WORD_BITS; - bitset_windex offset = index - bset->b.cindex; + bitset_windex windex = bitno / BITSET_WORD_BITS; + bitset_windex offset = windex - bset->b.cindex; if (offset < bset->b.csize) bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS)); @@ -151,60 +159,17 @@ bitset_reset (bitset bset, bitset_bindex bitno) /* Test bit BITNO in bitset BSET. */ -static inline int +static inline bool bitset_test (bitset bset, bitset_bindex bitno) { - bitset_windex index = bitno / BITSET_WORD_BITS; - bitset_windex offset = index - bset->b.cindex; + bitset_windex windex = bitno / BITSET_WORD_BITS; + bitset_windex offset = windex - bset->b.cindex; if (offset < bset->b.csize) return (bset->b.cdata[offset] >> (bitno % BITSET_WORD_BITS)) & 1; else return BITSET_TEST_ (bset, bitno); } -#endif - -#if ! BITSET_INLINE - -/* Set bit BITNO in bitset BSET. */ -#define bitset_set(bset, bitno) \ -do \ -{ \ - bitset_bindex _bitno = (bitno); \ - bitset_windex _index = _bitno / BITSET_WORD_BITS; \ - bitset_windex _offset = _index - (bset)->b.cindex; \ - \ - if (_offset < (bset)->b.csize) \ - (bset)->b.cdata[_offset] |= \ - ((bitset_word) 1 << (_bitno % BITSET_WORD_BITS)); \ - else \ - BITSET_SET_ ((bset), _bitno); \ -} while (0) - - -/* Reset bit BITNO in bitset BSET. */ -#define bitset_reset(bset, bitno) \ -do \ -{ \ - bitset_bindex _bitno = (bitno); \ - bitset_windex _index = _bitno / BITSET_WORD_BITS; \ - bitset_windex _offset = _index - (bset)->b.cindex; \ - \ - if (_offset < (bset)->b.csize) \ - (bset)->b.cdata[_offset] &= \ - ~((bitset_word) 1 << (_bitno % BITSET_WORD_BITS)); \ - else \ - BITSET_RESET_ ((bset), _bitno); \ -} while (0) - - -/* Test bit BITNO in bitset BSET. */ -#define bitset_test(bset, bitno) \ -(((((bitno) / BITSET_WORD_BITS) - (bset)->b.cindex) < (bset)->b.csize) \ - ? ((bset)->b.cdata[(((bitno) / BITSET_WORD_BITS) - (bset)->b.cindex)] \ - >> ((bitno) % BITSET_WORD_BITS)) & 1 \ - : (unsigned int) BITSET_TEST_ ((bset), (bitno))) -#endif /* Toggle bit BITNO in bitset BSET and return non-zero if now set. */ @@ -213,6 +178,9 @@ do \ /* Return size in bits of bitset SRC. */ #define bitset_size(SRC) BITSET_SIZE_ (SRC) +/* Change size of bitset. */ +extern void bitset_resize (bitset, bitset_bindex); + /* Return number of bits set in bitset SRC. */ #define bitset_count(SRC) BITSET_COUNT_ (SRC) @@ -310,65 +278,69 @@ do \ #define bitset_list_reverse(BSET, LIST, NUM, NEXT) \ BITSET_LIST_REVERSE_ (BSET, LIST, NUM, NEXT) +/* Return true if both bitsets are of the same type and size. */ +extern bool bitset_compatible_p (bitset bset1, bitset bset2); -/* Find next set bit. */ -extern bitset_bindex bitset_next PARAMS ((bitset, bitset_bindex)); +/* Find next set bit from the given bit index. */ +extern bitset_bindex bitset_next (bitset, bitset_bindex); -/* Find previous set bit. */ -extern bitset_bindex bitset_prev PARAMS ((bitset, bitset_bindex)); +/* Find previous set bit from the given bit index. */ +extern bitset_bindex bitset_prev (bitset, bitset_bindex); /* Find first set bit. */ -extern bitset_bindex bitset_first PARAMS ((bitset)); +extern bitset_bindex bitset_first (bitset); /* Find last set bit. */ -extern bitset_bindex bitset_last PARAMS ((bitset)); +extern bitset_bindex bitset_last (bitset); /* Return nonzero if this is the only set bit. */ -extern int bitset_only_set_p PARAMS ((bitset, bitset_bindex)); +extern bool bitset_only_set_p (bitset, bitset_bindex); /* Dump bitset. */ -extern void bitset_dump PARAMS ((FILE *, bitset)); +extern void bitset_dump (FILE *, bitset); -/* Loop over all elements of BSET, starting with MIN, setting BIT +/* Loop over all elements of BSET, starting with MIN, setting INDEX to the index of each set bit. For example, the following will print the bits set in a bitset: bitset_bindex i; bitset_iterator iter; - bitset_zero (dst); BITSET_FOR_EACH (iter, src, i, 0) { - printf ("%ld ", i); + printf ("%lu ", (unsigned long int) i); }; */ -#define BITSET_FOR_EACH(ITER, BSET, BIT, MIN) \ +#define BITSET_FOR_EACH(ITER, BSET, INDEX, MIN) \ for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \ - (ITER.num == BITSET_LIST_SIZE) \ - && (ITER.num = bitset_list (BSET, ITER.list, \ + (ITER.num == BITSET_LIST_SIZE) \ + && (ITER.num = bitset_list (BSET, ITER.list, \ BITSET_LIST_SIZE, &ITER.next));) \ - for (ITER.i = 0; (BIT) = ITER.list[ITER.i], ITER.i < ITER.num; ITER.i++) + for (ITER.i = 0; \ + ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \ + ITER.i++) /* Loop over all elements of BSET, in reverse order starting with - MIN, setting BIT to the index of each set bit. For example, the + MIN, setting INDEX to the index of each set bit. For example, the following will print the bits set in a bitset in reverse order: bitset_bindex i; bitset_iterator iter; - bitset_zero (dst); BITSET_FOR_EACH_REVERSE (iter, src, i, 0) { - printf ("%ld ", i); + printf ("%lu ", (unsigned long int) i); }; */ -#define BITSET_FOR_EACH_REVERSE(ITER, BSET, BIT, MIN) \ +#define BITSET_FOR_EACH_REVERSE(ITER, BSET, INDEX, MIN) \ for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \ - (ITER.num == BITSET_LIST_SIZE) \ + (ITER.num == BITSET_LIST_SIZE) \ && (ITER.num = bitset_list_reverse (BSET, ITER.list, \ - BITSET_LIST_SIZE, &ITER.next));) \ - for (ITER.i = 0; (BIT) = ITER.list[ITER.i], ITER.i < ITER.num; ITER.i++) + BITSET_LIST_SIZE, &ITER.next));) \ + for (ITER.i = 0; \ + ITER.i < ITER.num && ((INDEX) = ITER.list[ITER.i], 1); \ + ITER.i++) /* Define set operations in terms of logical operations. */ @@ -393,30 +365,28 @@ extern void bitset_dump PARAMS ((FILE *, bitset)); bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3) - /* Release any memory tied up with bitsets. */ -extern void bitset_release_memory PARAMS ((void)); +extern void bitset_release_memory (void); /* Enable bitset stats gathering. */ -extern void bitset_stats_enable PARAMS ((void)); +extern void bitset_stats_enable (void); /* Disable bitset stats gathering. */ -extern void bitset_stats_disable PARAMS ((void)); +extern void bitset_stats_disable (void); /* Read bitset stats file of accummulated stats. */ -void bitset_stats_read PARAMS ((const char *filename)); +void bitset_stats_read (const char *file_name); /* Write bitset stats file of accummulated stats. */ -void bitset_stats_write PARAMS ((const char *filename)); +void bitset_stats_write (const char *file_name); /* Dump bitset stats. */ -extern void bitset_stats_dump PARAMS ((FILE *)); +extern void bitset_stats_dump (FILE *); /* Function to debug bitset from debugger. */ -extern void debug_bitset PARAMS ((bitset)); +extern void debug_bitset (bitset); /* Function to debug bitset stats from debugger. */ -extern void debug_bitset_stats PARAMS ((void)); +extern void debug_bitset_stats (void); #endif /* _BITSET_H */ -