X-Git-Url: https://git.saurik.com/bison.git/blobdiff_plain/a911db9cba6e6449801452c4baef09ab1899346a..d6bdb90a2a2ced43828cf6591b3baf513d38285d:/lib/abitset.c?ds=sidebyside
diff --git a/lib/abitset.c b/lib/abitset.c
index 2d5ca293..dc71713d 100644
--- a/lib/abitset.c
+++ b/lib/abitset.c
@@ -1,10 +1,11 @@
/* Array bitsets.
- Copyright (C) 2002 Free Software Foundation, Inc.
+ Copyright (C) 2002-2003, 2006, 2009-2010 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
+ 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
+ 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,
@@ -13,13 +14,9 @@
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.
-*/
+ along with this program. If not, see . */
-#ifdef HAVE_CONFIG_H
-#include "config.h"
-#endif
+#include
#include "abitset.h"
#include
@@ -31,16 +28,17 @@
#define ABITSET_N_WORDS(N) (((N) + BITSET_WORD_BITS - 1) / BITSET_WORD_BITS)
#define ABITSET_WORDS(X) ((X)->a.words)
-#define ABITSET_N_BITS(X) ((X)->a.n_bits)
-/* Return size in bits of bitset SRC. */
static bitset_bindex
-abitset_size (bitset src)
+abitset_resize (bitset src, bitset_bindex size)
{
- return ABITSET_N_BITS (src);
-}
+ /* These bitsets have a fixed size. */
+ if (BITSET_SIZE_ (src) != size)
+ abort ();
+ return size;
+}
/* Find list of up to NUM bits set in BSET starting from and including
*NEXT and store in array LIST. Return with actual number of bits
@@ -60,7 +58,7 @@ abitset_small_list (bitset src, bitset_bindex *list,
if (!word)
return 0;
- size = ABITSET_N_BITS (src);
+ size = BITSET_SIZE_ (src);
bitno = *next;
if (bitno >= size)
return 0;
@@ -105,8 +103,9 @@ abitset_small_list (bitset src, bitset_bindex *list,
static void
abitset_set (bitset dst ATTRIBUTE_UNUSED, bitset_bindex bitno ATTRIBUTE_UNUSED)
{
- /* This should never occur for abitsets since we should always
- hit the cache. */
+ /* This should never occur for abitsets since we should always hit
+ the cache. It is likely someone is trying to access outside the
+ bounds of the bitset. */
abort ();
}
@@ -116,21 +115,20 @@ static void
abitset_reset (bitset dst ATTRIBUTE_UNUSED,
bitset_bindex bitno ATTRIBUTE_UNUSED)
{
- /* This should never occur for abitsets since we should always
- hit the cache. */
- abort ();
+ /* This should never occur for abitsets since we should always hit
+ the cache. It is likely someone is trying to access outside the
+ bounds of the bitset. Since the bit is zero anyway, let it pass. */
}
/* Test bit BITNO in bitset SRC. */
-static int
+static bool
abitset_test (bitset src ATTRIBUTE_UNUSED,
bitset_bindex bitno ATTRIBUTE_UNUSED)
{
/* This should never occur for abitsets since we should always
hit the cache. */
- abort ();
- return 0;
+ return false;
}
@@ -149,7 +147,7 @@ abitset_list_reverse (bitset src, bitset_bindex *list,
unsigned int bitcnt;
bitset_bindex bitoff;
bitset_word *srcp = ABITSET_WORDS (src);
- bitset_bindex n_bits = ABITSET_N_BITS (src);
+ bitset_bindex n_bits = BITSET_SIZE_ (src);
rbitno = *next;
@@ -228,7 +226,7 @@ abitset_list (bitset src, bitset_bindex *list,
}
else
{
- if (bitno >= ABITSET_N_BITS (src))
+ if (bitno >= BITSET_SIZE_ (src))
return 0;
windex = bitno / BITSET_WORD_BITS;
@@ -304,7 +302,7 @@ abitset_unused_clear (bitset dst)
{
unsigned int last_bit;
- last_bit = ABITSET_N_BITS (dst) % BITSET_WORD_BITS;
+ last_bit = BITSET_SIZE_ (dst) % BITSET_WORD_BITS;
if (last_bit)
ABITSET_WORDS (dst)[dst->b.csize - 1] &=
((bitset_word) 1 << last_bit) - 1;
@@ -336,7 +334,7 @@ abitset_zero (bitset dst)
}
-static int
+static bool
abitset_empty_p (bitset dst)
{
bitset_windex i;
@@ -344,9 +342,9 @@ abitset_empty_p (bitset dst)
for (i = 0; i < dst->b.csize; i++)
if (dstp[i])
- return 0;
+ return false;
- return 1;
+ return true;
}
@@ -377,7 +375,7 @@ abitset_not (bitset dst, bitset src)
}
-static int
+static bool
abitset_equal_p (bitset dst, bitset src)
{
bitset_windex i;
@@ -387,12 +385,12 @@ abitset_equal_p (bitset dst, bitset src)
for (i = 0; i < size; i++)
if (*srcp++ != *dstp++)
- return 0;
- return 1;
+ return false;
+ return true;
}
-static int
+static bool
abitset_subset_p (bitset dst, bitset src)
{
bitset_windex i;
@@ -402,12 +400,12 @@ abitset_subset_p (bitset dst, bitset src)
for (i = 0; i < size; i++, dstp++, srcp++)
if (*dstp != (*srcp | *dstp))
- return 0;
- return 1;
+ return false;
+ return true;
}
-static int
+static bool
abitset_disjoint_p (bitset dst, bitset src)
{
bitset_windex i;
@@ -417,9 +415,9 @@ abitset_disjoint_p (bitset dst, bitset src)
for (i = 0; i < size; i++)
if (*srcp++ & *dstp++)
- return 0;
+ return false;
- return 1;
+ return true;
}
@@ -437,11 +435,11 @@ abitset_and (bitset dst, bitset src1, bitset src2)
}
-static int
+static bool
abitset_and_cmp (bitset dst, bitset src1, bitset src2)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *dstp = ABITSET_WORDS (dst);
@@ -453,7 +451,7 @@ abitset_and_cmp (bitset dst, bitset src1, bitset src2)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -475,11 +473,11 @@ abitset_andn (bitset dst, bitset src1, bitset src2)
}
-static int
+static bool
abitset_andn_cmp (bitset dst, bitset src1, bitset src2)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *dstp = ABITSET_WORDS (dst);
@@ -491,7 +489,7 @@ abitset_andn_cmp (bitset dst, bitset src1, bitset src2)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -513,11 +511,11 @@ abitset_or (bitset dst, bitset src1, bitset src2)
}
-static int
+static bool
abitset_or_cmp (bitset dst, bitset src1, bitset src2)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *dstp = ABITSET_WORDS (dst);
@@ -529,7 +527,7 @@ abitset_or_cmp (bitset dst, bitset src1, bitset src2)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -551,11 +549,11 @@ abitset_xor (bitset dst, bitset src1, bitset src2)
}
-static int
+static bool
abitset_xor_cmp (bitset dst, bitset src1, bitset src2)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *dstp = ABITSET_WORDS (dst);
@@ -567,7 +565,7 @@ abitset_xor_cmp (bitset dst, bitset src1, bitset src2)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -590,11 +588,11 @@ abitset_and_or (bitset dst, bitset src1, bitset src2, bitset src3)
}
-static int
+static bool
abitset_and_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *src3p = ABITSET_WORDS (src3);
@@ -607,7 +605,7 @@ abitset_and_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -630,11 +628,11 @@ abitset_andn_or (bitset dst, bitset src1, bitset src2, bitset src3)
}
-static int
+static bool
abitset_andn_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *src3p = ABITSET_WORDS (src3);
@@ -647,7 +645,7 @@ abitset_andn_or_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -670,11 +668,11 @@ abitset_or_and (bitset dst, bitset src1, bitset src2, bitset src3)
}
-static int
+static bool
abitset_or_and_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
{
bitset_windex i;
- int changed = 0;
+ bool changed = false;
bitset_word *src1p = ABITSET_WORDS (src1);
bitset_word *src2p = ABITSET_WORDS (src2);
bitset_word *src3p = ABITSET_WORDS (src3);
@@ -687,7 +685,7 @@ abitset_or_and_cmp (bitset dst, bitset src1, bitset src2, bitset src3)
if (*dstp != tmp)
{
- changed = 1;
+ changed = true;
*dstp = tmp;
}
}
@@ -711,7 +709,8 @@ struct bitset_vtable abitset_small_vtable = {
abitset_reset,
bitset_toggle_,
abitset_test,
- abitset_size,
+ abitset_resize,
+ bitset_size_,
bitset_count_,
abitset_empty_p,
abitset_ones,
@@ -748,7 +747,8 @@ struct bitset_vtable abitset_vtable = {
abitset_reset,
bitset_toggle_,
abitset_test,
- abitset_size,
+ abitset_resize,
+ bitset_size_,
bitset_count_,
abitset_empty_p,
abitset_ones,
@@ -809,7 +809,7 @@ abitset_init (bitset bset, bitset_bindex n_bits)
bitset_windex size;
size = ABITSET_N_WORDS (n_bits);
- ABITSET_N_BITS (bset) = n_bits;
+ BITSET_NBITS_ (bset) = n_bits;
/* Use optimized routines if bitset fits within a single word.
There is probably little merit if using caching since