X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/dbba6a3be7dd98a7fd33353d79c088d8b66fc324..a17187e56386747a9b4d9633c3d116c2087f2b8b:/lib/bitset.h?ds=inline diff --git a/lib/bitset.h b/lib/bitset.h index c659a2ce..0bc55261 100644 --- a/lib/bitset.h +++ b/lib/bitset.h @@ -1,20 +1,21 @@ /* Generic bitsets. - Copyright (C) 2002 Free Software Foundation, Inc. + + Copyright (C) 2002-2004, 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 . */ #ifndef _BITSET_H #define _BITSET_H @@ -26,13 +27,17 @@ 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. */ - BITSET_DENSE = 4, /* Bitset dense. */ - BITSET_SPARSE = 8, /* Bitset sparse. */ - BITSET_FRUGAL = 16, /* Prefer most compact. */ - BITSET_GREEDY = 32}; /* Prefer fastest at memory expense. */ + BITSET_VARIABLE = 2, /* Bitset size variable. */ + BITSET_DENSE = 4, /* Bitset dense. */ + BITSET_SPARSE = 8, /* Bitset sparse. */ + BITSET_FRUGAL = 16, /* Prefer most compact. */ + BITSET_GREEDY = 32}; /* Prefer fastest at memory expense. */ typedef unsigned int bitset_attrs; @@ -44,27 +49,26 @@ 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. */ + bitset_word words[1]; /* The array of bits. */ } a; struct ebitset_struct { struct bbitset_struct b; - bitset_windex size; /* Number of elements. */ - struct ebitset_elt_struct **elts; /* Expanding array of ptrs to elts. */ + bitset_windex size; /* Number of elements. */ + struct ebitset_elt_struct **elts; /* Expanding array of ptrs to elts. */ } e; struct lbitset_struct { struct bbitset_struct b; - struct lbitset_elt_struct *head; /* First element in linked list. */ - struct lbitset_elt_struct *tail; /* Last element in linked list. */ + struct lbitset_elt_struct *head; /* First element in linked list. */ + struct lbitset_elt_struct *tail; /* Last element in linked list. */ } l; struct bitset_stats_struct @@ -72,6 +76,13 @@ 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; + }; @@ -87,38 +98,37 @@ 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); /* Set bit BITNO in bitset BSET. */ @@ -150,7 +160,7 @@ 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 windex = bitno / BITSET_WORD_BITS; @@ -169,6 +179,9 @@ bitset_test (bitset bset, bitset_bindex bitno) /* 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) @@ -266,65 +279,69 @@ bitset_test (bitset bset, bitset_bindex bitno) #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) \ - for (ITER.next = (MIN), ITER.num = BITSET_LIST_SIZE; \ - (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++) +#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, \ + BITSET_LIST_SIZE, &ITER.next));) \ + 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) \ - for (ITER.next = (MIN), 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++) +#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_reverse (BSET, ITER.list, \ + 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. */ @@ -349,30 +366,28 @@ 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 */ -