portability: fix several issues with M4 subprocess.

[bison.git] / lib / bitset.h

diff --git a/lib/bitset.h b/lib/bitset.h
index 420ad88eef359aa841f1e874f5b906dba73f7ab7..8e319380b914e27dea5f9594482dc4ff76302cd1 100644 (file)
--- a/lib/bitset.h
+++ b/lib/bitset.h
@@ -1,23 +1,22 @@
 /* Generic bitsets.
 /* Generic bitsets.

-   Copyright (C) 2002 Free Software Foundation, Inc.
+   Copyright (C) 2002-2004, 2009-2010 Free Software Foundation, Inc.

    Contributed by Michael Hayes (m.hayes@elec.canterbury.ac.nz).
 
    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 _BITSET_H
 
 #ifndef _BITSET_H

-#define _BITSET_H 
+#define _BITSET_H

 
 /* This file is the public interface to the bitset abstract data type.
    Only use the functions and macros defined in this file.  */
 
 /* This file is the public interface to the bitset abstract data type.
    Only use the functions and macros defined in this file.  */


@@ -26,6 +25,10 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */
 #include "obstack.h"
 #include <stdio.h>
 
 #include "obstack.h"
 #include <stdio.h>
 

+#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.  */
 /* Attributes used to select a bitset implementation.  */
 enum bitset_attr {BITSET_FIXED = 1,    /* Bitset size fixed.  */
                  BITSET_VARIABLE = 2, /* Bitset size variable.  */


@@ -36,12 +39,48 @@ enum bitset_attr {BITSET_FIXED = 1,    /* Bitset size fixed.  */
 
 typedef unsigned int bitset_attrs;
 
 
 typedef unsigned int bitset_attrs;
 

-/* The contents of the structure should be considered to be private.
-   While I would like to make this structure opaque, it needs to be
-   visible for the inline bit set/test functions.  */
-struct bitset_struct
+/* The contents of the union should be considered to be private.
+   While I would like to make this union opaque, it needs to be
+   visible for the inline bit set/test functions, and for delegation
+   to the proper implementation.  */
+union bitset_union

 {
 {

-  struct bbitset_struct b;
+  /* This must be the first member of every other structure that is a
+     member of this union.  */
+  struct bbitset_struct b;             /* Base bitset data.  */
+
+  struct abitset_struct
+  {
+    struct bbitset_struct b;
+    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.  */
+  } 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.  */
+  } l;
+
+  struct bitset_stats_struct
+  {
+    struct bbitset_struct b;
+    bitset bset;
+  } s;
+
+  struct vbitset_struct
+  {
+    struct bbitset_struct b;
+    bitset_windex size;                        /* Allocated size of array.  */
+  } v;
+

 };
 
 
 };
 
 


@@ -57,52 +96,46 @@ typedef struct
 
 
 /* Return bytes required for bitset of desired type and size.  */
 
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* Return bitset type.  */

-extern enum bitset_type bitset_type_get PARAMS ((bitset));
+extern enum bitset_type bitset_type_get (bitset);

 
 /* Return bitset type name.  */
 
 /* Return bitset type name.  */

-extern const char *bitset_type_name_get PARAMS ((bitset));
+extern const char *bitset_type_name_get (bitset);

 
 

-#if BITSET_INLINE
-static inline void bitset_set PARAMS ((bitset, bitset_bindex));
-static inline void bitset_reset PARAMS ((bitset, bitset_bindex));
-static inline int bitset_test PARAMS ((bitset, bitset_bindex));

 
 /* Set bit BITNO in bitset BSET.  */
 
 /* Set bit BITNO in bitset BSET.  */

-static inline void bitset_set (bset, bitno)
-    bitset bset;
-    bitset_bindex bitno;
+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));
   else
   if (offset < bset->b.csize)
     bset->b.cdata[offset] |= ((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
   else


@@ -111,13 +144,12 @@ static inline void bitset_set (bset, bitno)
 
 
 /* Reset bit BITNO in bitset BSET.  */
 
 
 /* Reset bit BITNO in bitset BSET.  */

-static inline void bitset_reset (bset, bitno)
-    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));
   else
   if (offset < bset->b.csize)
     bset->b.cdata[offset] &= ~((bitset_word) 1 << (bitno % BITSET_WORD_BITS));
   else


@@ -126,60 +158,17 @@ static inline void bitset_reset (bset, bitno)
 
 
 /* Test bit BITNO in bitset BSET.  */
 
 
 /* Test bit BITNO in bitset BSET.  */

-static inline int bitset_test (bset, bitno)
-    bitset bset;
-    bitset_bindex bitno;
+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);
 }
   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] &= ~(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.  */
 
 
 /* Toggle bit BITNO in bitset BSET and return non-zero if now set.  */


@@ -188,6 +177,9 @@ do                                                                  \
 /* Return size in bits of bitset SRC.  */
 #define bitset_size(SRC) BITSET_SIZE_ (SRC)
 
 /* 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)
 
 /* Return number of bits set in bitset SRC.  */
 #define bitset_count(SRC) BITSET_COUNT_ (SRC)
 


@@ -273,116 +265,127 @@ do                                                              \
 #define bitset_or_and_cmp(DST, SRC1, SRC2, SRC3)\
  BITSET_OR_AND_CMP_ (DST, SRC1, SRC2, SRC3)
 
 #define bitset_or_and_cmp(DST, SRC1, SRC2, SRC3)\
  BITSET_OR_AND_CMP_ (DST, SRC1, SRC2, SRC3)
 

-/* Find list of up to NUM bits set in BSET starting from and including 
+/* Find list of up to NUM bits set in BSET starting from and including

    *NEXT.  Return with actual number of bits found and with *NEXT
    indicating where search stopped.  */
 #define bitset_list(BSET, LIST, NUM, NEXT) \
    *NEXT.  Return with actual number of bits found and with *NEXT
    indicating where search stopped.  */
 #define bitset_list(BSET, LIST, NUM, NEXT) \

- BITSET_LIST_ (BSET, LIST, NUM, NEXT) 
+ BITSET_LIST_ (BSET, LIST, NUM, NEXT)

 
 /* Find reverse list of up to NUM bits set in BSET starting from and
    including NEXT.  Return with actual number of bits found and with
    *NEXT indicating where search stopped.  */
 #define bitset_list_reverse(BSET, LIST, NUM, NEXT) \
 
 /* Find reverse list of up to NUM bits set in BSET starting from and
    including NEXT.  Return with actual number of bits found and with
    *NEXT indicating where search stopped.  */
 #define bitset_list_reverse(BSET, LIST, NUM, NEXT) \

- 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 from the given bit index.  */
+extern bitset_bindex bitset_next (bitset, bitset_bindex);

 
 

+/* Find previous set bit from the given bit index.  */
+extern bitset_bindex bitset_prev (bitset, bitset_bindex);

 
 /* Find first set bit.  */
 
 /* Find first set bit.  */

-extern bitset_bindex bitset_first PARAMS ((bitset));
+extern bitset_bindex bitset_first (bitset);

 
 /* Find last set bit.  */
 
 /* 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 bool bitset_only_set_p (bitset, bitset_bindex);

 
 /* Dump bitset.  */
 
 /* 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;
 
    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)
    {
    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;                       \
   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++)
+       (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
 
 
 /* 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;
 
    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)
    {
    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;                       \
   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,                  \
        && (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.  */
 
 
 
 /* Define set operations in terms of logical operations.  */
 

-#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2) 
-#define bitset_diff_cmp(DST, SRC1, SRC2) bitset_andn_cmp (DST, SRC1, SRC2) 
+#define bitset_diff(DST, SRC1, SRC2) bitset_andn (DST, SRC1, SRC2)
+#define bitset_diff_cmp(DST, SRC1, SRC2) bitset_andn_cmp (DST, SRC1, SRC2)

 
 

-#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2) 
-#define bitset_intersection_cmp(DST, SRC1, SRC2) bitset_and_cmp (DST, SRC1, SRC2) 
+#define bitset_intersection(DST, SRC1, SRC2) bitset_and (DST, SRC1, SRC2)
+#define bitset_intersection_cmp(DST, SRC1, SRC2) bitset_and_cmp (DST, SRC1, SRC2)

 
 

-#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2) 
-#define bitset_union_cmp(DST, SRC1, SRC2) bitset_or_cmp (DST, SRC1, SRC2) 
+#define bitset_union(DST, SRC1, SRC2) bitset_or (DST, SRC1, SRC2)
+#define bitset_union_cmp(DST, SRC1, SRC2) bitset_or_cmp (DST, SRC1, SRC2)

 
 /* Symmetrical difference.  */
 
 /* Symmetrical difference.  */

-#define bitset_symdiff(DST, SRC1, SRC2) bitset_xor (DST, SRC1, SRC2) 
-#define bitset_symdiff_cmp(DST, SRC1, SRC2) bitset_xor_cmp (DST, SRC1, SRC2) 
+#define bitset_symdiff(DST, SRC1, SRC2) bitset_xor (DST, SRC1, SRC2)
+#define bitset_symdiff_cmp(DST, SRC1, SRC2) bitset_xor_cmp (DST, SRC1, SRC2)

 
 /* Union of difference.  */
 #define bitset_diff_union(DST, SRC1, SRC2, SRC3) \
 
 /* Union of difference.  */
 #define bitset_diff_union(DST, SRC1, SRC2, SRC3) \

-  bitset_andn_or (DST, SRC1, SRC2, SRC3) 
+  bitset_andn_or (DST, SRC1, SRC2, SRC3)

 #define bitset_diff_union_cmp(DST, SRC1, SRC2, SRC3) \
 #define bitset_diff_union_cmp(DST, SRC1, SRC2, SRC3) \

-  bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3) 
-
+  bitset_andn_or_cmp (DST, SRC1, SRC2, SRC3)

 
 
 /* Release any memory tied up with bitsets.  */
 
 
 /* Release any memory tied up with bitsets.  */

-extern void bitset_release_memory PARAMS ((void));
+extern void bitset_release_memory (void);

 
 /* Enable bitset stats gathering.  */
 
 /* Enable bitset stats gathering.  */

-extern void bitset_stats_enable PARAMS ((void));
+extern void bitset_stats_enable (void);

 
 /* Disable bitset stats gathering.  */
 
 /* Disable bitset stats gathering.  */

-extern void bitset_stats_disable PARAMS ((void));
+extern void bitset_stats_disable (void);

 
 /* Read bitset stats file of accummulated stats.  */
 
 /* 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.  */
 
 /* 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.  */
 
 /* Dump bitset stats.  */

-extern void bitset_stats_dump PARAMS ((FILE *));
+extern void bitset_stats_dump (FILE *);

 
 /* Function to debug bitset from debugger.  */
 
 /* Function to debug bitset from debugger.  */

-extern void debug_bitset PARAMS ((bitset));
+extern void debug_bitset (bitset);

 
 /* Function to debug bitset stats from debugger.  */
 
 /* Function to debug bitset stats from debugger.  */

-extern void debug_bitset_stats PARAMS ((void));
+extern void debug_bitset_stats (void);

 
 #endif /* _BITSET_H  */
 
 #endif /* _BITSET_H  */

-