Revert to 1.28c

This commit is contained in:
Robert Anisko
2001-08-25 13:13:14 +00:00
parent 667a550e7b
commit bbb5bcc6f8
24 changed files with 581 additions and 1251 deletions

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@@ -2,4 +2,3 @@
.deps
Makefile
ansi2knr
*.flc

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@@ -4,7 +4,7 @@ AUTOMAKE_OPTIONS = ansi2knr
noinst_LIBRARIES = libbison.a
INCLUDES = -I.. -I$(srcdir) -I../intl -I$(top_srcdir)/src
INCLUDES = -I.. -I$(srcdir) -I../intl
# Heck, we are still using an old version of Automake which does not
# understand LIBOBJ additions using $objext...
@@ -14,7 +14,6 @@ EXTRA_DIST = malloc.c realloc.c
libbison_a_SOURCES = \
error.c error.h \
getopt.h getopt.c getopt1.c \
hash.h hash.c \
obstack.h obstack.c \
quote.h quote.c quotearg.h quotearg.c \
xalloc.h xmalloc.c xstrdup.c

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@@ -98,14 +98,14 @@ AUTOMAKE_OPTIONS = ansi2knr
noinst_LIBRARIES = libbison.a
INCLUDES = -I.. -I$(srcdir) -I../intl -I$(top_srcdir)/src
INCLUDES = -I.. -I$(srcdir) -I../intl
# Heck, we are still using an old version of Automake which does not
# understand LIBOBJ additions using $objext...
EXTRA_DIST = malloc.c realloc.c
libbison_a_SOURCES = error.c error.h getopt.h getopt.c getopt1.c hash.h hash.c obstack.h obstack.c quote.h quote.c quotearg.h quotearg.c xalloc.h xmalloc.c xstrdup.c
libbison_a_SOURCES = error.c error.h getopt.h getopt.c getopt1.c obstack.h obstack.c quote.h quote.c quotearg.h quotearg.c xalloc.h xmalloc.c xstrdup.c
libbison_a_LIBADD = @LIBOBJS@
@@ -121,8 +121,8 @@ CPPFLAGS = @CPPFLAGS@
LDFLAGS = @LDFLAGS@
LIBS = @LIBS@
ANSI2KNR = @ANSI2KNR@
libbison_a_OBJECTS = error$U.o getopt$U.o getopt1$U.o hash$U.o \
obstack$U.o quote$U.o quotearg$U.o xmalloc$U.o xstrdup$U.o
libbison_a_OBJECTS = error$U.o getopt$U.o getopt1$U.o obstack$U.o \
quote$U.o quotearg$U.o xmalloc$U.o xstrdup$U.o
AR = ar
CFLAGS = @CFLAGS@
COMPILE = $(CC) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) $(AM_CFLAGS) $(CFLAGS)
@@ -136,10 +136,10 @@ DISTFILES = $(DIST_COMMON) $(SOURCES) $(HEADERS) $(TEXINFOS) $(EXTRA_DIST)
TAR = tar
GZIP_ENV = --best
DEP_FILES = .deps/error.P .deps/getopt.P .deps/getopt1.P .deps/hash.P \
.deps/memchr.P .deps/obstack.P .deps/quote.P .deps/quotearg.P \
.deps/stpcpy.P .deps/strndup.P .deps/strnlen.P .deps/strspn.P \
.deps/xmalloc.P .deps/xstrdup.P
DEP_FILES = .deps/error.P .deps/getopt.P .deps/getopt1.P .deps/memchr.P \
.deps/obstack.P .deps/quote.P .deps/quotearg.P .deps/stpcpy.P \
.deps/strndup.P .deps/strnlen.P .deps/strspn.P .deps/xmalloc.P \
.deps/xstrdup.P
SOURCES = $(libbison_a_SOURCES)
OBJECTS = $(libbison_a_OBJECTS)
@@ -213,8 +213,6 @@ getopt_.c: getopt.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/getopt.c; then echo $(srcdir)/getopt.c; else echo getopt.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > getopt_.c
getopt1_.c: getopt1.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/getopt1.c; then echo $(srcdir)/getopt1.c; else echo getopt1.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > getopt1_.c
hash_.c: hash.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/hash.c; then echo $(srcdir)/hash.c; else echo hash.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > hash_.c
memchr_.c: memchr.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/memchr.c; then echo $(srcdir)/memchr.c; else echo memchr.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > memchr_.c
obstack_.c: obstack.c $(ANSI2KNR)
@@ -235,9 +233,9 @@ xmalloc_.c: xmalloc.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/xmalloc.c; then echo $(srcdir)/xmalloc.c; else echo xmalloc.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > xmalloc_.c
xstrdup_.c: xstrdup.c $(ANSI2KNR)
$(CPP) $(DEFS) $(INCLUDES) $(AM_CPPFLAGS) $(CPPFLAGS) `if test -f $(srcdir)/xstrdup.c; then echo $(srcdir)/xstrdup.c; else echo xstrdup.c; fi` | sed 's/^# \([0-9]\)/#line \1/' | $(ANSI2KNR) > xstrdup_.c
alloca_.o error_.o getopt_.o getopt1_.o hash_.o memchr_.o obstack_.o \
quote_.o quotearg_.o stpcpy_.o strndup_.o strnlen_.o strspn_.o \
xmalloc_.o xstrdup_.o : $(ANSI2KNR)
alloca_.o error_.o getopt_.o getopt1_.o memchr_.o obstack_.o quote_.o \
quotearg_.o stpcpy_.o strndup_.o strnlen_.o strspn_.o xmalloc_.o \
xstrdup_.o : $(ANSI2KNR)
tags: TAGS

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@@ -1,293 +0,0 @@
/* hash.c -- hash table maintenance
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Greg McGary <gkm@gnu.ai.mit.edu>
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, 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.
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.
*/
#include <config.h>
#include <stdio.h>
#include "hash.h"
#include "error.h"
#include "system.h"
#include "xalloc.h"
static void hash_rehash __P((struct hash_table* ht));
static unsigned long round_up_2 __P((unsigned long rough));
/* Implement double hashing with open addressing. The table size is
always a power of two. The secondary (`increment') hash function
is forced to return an odd-value, in order to be relatively prime
to the table size. This guarantees that the increment can
potentially hit every slot in the table during collision
resolution. */
void *hash_deleted_item = &hash_deleted_item;
/* Force the table size to be a power of two, possibly rounding up the
given size. */
void
hash_init (struct hash_table* ht, unsigned long size,
hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp)
{
ht->ht_size = round_up_2 (size);
if (ht->ht_size > (128 * 1024)) /* prevent size from getting out of hand */
ht->ht_size /= 2;
ht->ht_vec = (void**) CALLOC (struct token *, ht->ht_size);
if (ht->ht_vec == 0)
error (1, 0, _("can't allocate %ld bytes for hash table: memory exhausted"),
ht->ht_size * sizeof(struct token *));
ht->ht_capacity = ht->ht_size * 15 / 16; /* 93.75% loading factor */
ht->ht_fill = 0;
ht->ht_collisions = 0;
ht->ht_lookups = 0;
ht->ht_rehashes = 0;
ht->ht_hash_1 = hash_1;
ht->ht_hash_2 = hash_2;
ht->ht_compare = hash_cmp;
}
/* Load an array of items into `ht'. */
void
hash_load (struct hash_table* ht, void *item_table, unsigned long cardinality, unsigned long size)
{
char *items = (char *) item_table;
while (cardinality--)
{
hash_insert (ht, items);
items += size;
}
}
/* Returns the address of the table slot matching `key'. If `key' is
not found, return the address of an empty slot suitable for
inserting `key'. The caller is responsible for incrementing
ht_fill on insertion. */
void **
hash_find_slot (struct hash_table* ht, void const *key)
{
void **slot;
void **deleted_slot = 0;
unsigned int hash_2 = 0;
unsigned int hash_1 = (*ht->ht_hash_1) (key);
ht->ht_lookups++;
for (;;)
{
hash_1 %= ht->ht_size;
slot = &ht->ht_vec[hash_1];
if (*slot == 0)
return slot;
if (*slot == hash_deleted_item)
{
if (deleted_slot == 0)
deleted_slot = slot;
}
else
{
if (key == *slot)
return slot;
if ((*ht->ht_compare) (key, *slot) == 0)
return slot;
ht->ht_collisions++;
}
if (!hash_2)
hash_2 = (*ht->ht_hash_2) (key) | 1;
hash_1 += hash_2;
}
}
void *
hash_find_item (struct hash_table* ht, void const *key)
{
void **slot = hash_find_slot (ht, key);
return ((HASH_VACANT (*slot)) ? 0 : *slot);
}
void *
hash_insert (struct hash_table* ht, void *item)
{
void **slot = hash_find_slot (ht, item);
return hash_insert_at (ht, item, slot);
}
void *
hash_insert_at (struct hash_table* ht, void *item, void const *slot)
{
void *old_item = *(void **) slot;
if (HASH_VACANT (old_item))
{
ht->ht_fill++;
old_item = item;
}
*(void const **) slot = item;
if (ht->ht_fill >= ht->ht_capacity)
hash_rehash (ht);
return old_item;
}
void *
hash_delete (struct hash_table* ht, void const *item)
{
void **slot = hash_find_slot (ht, item);
return hash_delete_at (ht, slot);
}
void *
hash_delete_at (struct hash_table* ht, void const *slot)
{
void *item = *(void **) slot;
if (!HASH_VACANT (item))
{
*(void const **) slot = hash_deleted_item;
ht->ht_fill--;
return item;
}
else
return 0;
}
void
hash_free_items (struct hash_table* ht)
{
void **vec = ht->ht_vec;
void **end = &vec[ht->ht_size];
for (; vec < end; vec++)
{
void *item = *vec;
if (!HASH_VACANT (item))
free (item);
*vec = 0;
}
ht->ht_fill = 0;
}
void
hash_delete_items (struct hash_table* ht)
{
void **vec = ht->ht_vec;
void **end = &vec[ht->ht_size];
for (; vec < end; vec++)
*vec = 0;
ht->ht_fill = 0;
ht->ht_collisions = 0;
ht->ht_lookups = 0;
ht->ht_rehashes = 0;
}
void
hash_free (struct hash_table* ht, int free_items)
{
if (free_items)
hash_free_items (ht);
free (ht->ht_vec);
ht->ht_vec = 0;
ht->ht_fill = 0;
ht->ht_capacity = 0;
}
void
hash_map (struct hash_table *ht, hash_map_func_t map)
{
void **slot;
void **end = &ht->ht_vec[ht->ht_size];
for (slot = ht->ht_vec; slot < end; slot++)
{
if (!HASH_VACANT (*slot))
(*map) (*slot);
}
}
/* Double the size of the hash table in the event of overflow... */
static void
hash_rehash (struct hash_table* ht)
{
unsigned long old_ht_size = ht->ht_size;
void **old_vec = ht->ht_vec;
void **ovp;
void **slot;
ht->ht_size *= 2;
ht->ht_rehashes++;
ht->ht_capacity = ht->ht_size - (ht->ht_size >> 4);
ht->ht_vec = (void **) CALLOC (struct token *, ht->ht_size);
for (ovp = old_vec; ovp < &old_vec[old_ht_size]; ovp++)
{
if (*ovp == 0)
continue;
slot = hash_find_slot (ht, *ovp);
*slot = *ovp;
}
free (old_vec);
}
void
hash_print_stats (struct hash_table *ht, FILE *out_FILE)
{
fprintf (out_FILE, _("Load=%ld/%ld=%.0f%%, "), ht->ht_fill, ht->ht_size,
100.0 * (double) ht->ht_fill / (double) ht->ht_size);
fprintf (out_FILE, _("Rehash=%d, "), ht->ht_rehashes);
fprintf (out_FILE, _("Collisions=%ld/%ld=%.0f%%"), ht->ht_collisions, ht->ht_lookups,
(ht->ht_lookups
? (100.0 * (double) ht->ht_collisions / (double) ht->ht_lookups)
: 0));
}
/* Dump all items into a NULL-terminated vector. Use the
user-supplied vector, or malloc one. */
void**
hash_dump (struct hash_table *ht, void **vector_0, qsort_cmp_t compare)
{
void **vector;
void **slot;
void **end = &ht->ht_vec[ht->ht_size];
if (vector_0 == 0)
vector_0 = MALLOC (void *, ht->ht_fill + 1);
vector = vector_0;
for (slot = ht->ht_vec; slot < end; slot++)
if (!HASH_VACANT (*slot))
*vector++ = *slot;
*vector = 0;
if (compare)
qsort (vector_0, ht->ht_fill, sizeof (void *), compare);
return vector_0;
}
/* Round a given number up to the nearest power of 2. */
static unsigned long
round_up_2 (unsigned long rough)
{
int round;
round = 1;
while (rough)
{
round <<= 1;
rough >>= 1;
}
return round;
}

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@@ -1,144 +0,0 @@
/* hash.h -- decls for hash table
Copyright (C) 1995 Free Software Foundation, Inc.
Written by Greg McGary <gkm@gnu.ai.mit.edu>
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, 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.
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. */
#ifndef _hash_h_
#define _hash_h_
#include <stdio.h>
typedef unsigned long (*hash_func_t) __P((void const *key));
typedef int (*hash_cmp_func_t) __P((void const *x, void const *y));
typedef void (*hash_map_func_t) __P((void const *item));
struct hash_table
{
void **ht_vec;
unsigned long ht_size; /* total number of slots (power of 2) */
unsigned long ht_capacity; /* usable slots, limited by loading-factor */
unsigned long ht_fill; /* items in table */
unsigned long ht_collisions; /* # of failed calls to comparison function */
unsigned long ht_lookups; /* # of queries */
unsigned int ht_rehashes; /* # of times we've expanded table */
hash_func_t ht_hash_1; /* primary hash function */
hash_func_t ht_hash_2; /* secondary hash function */
hash_cmp_func_t ht_compare; /* comparison function */
};
typedef int (*qsort_cmp_t) __P((void const *, void const *));
void hash_init __P((struct hash_table *ht, unsigned long size,
hash_func_t hash_1, hash_func_t hash_2, hash_cmp_func_t hash_cmp));
void hash_load __P((struct hash_table *ht, void *item_table,
unsigned long cardinality, unsigned long size));
void **hash_find_slot __P((struct hash_table *ht, void const *key));
void *hash_find_item __P((struct hash_table *ht, void const *key));
void *hash_insert __P((struct hash_table *ht, void *item));
void *hash_insert_at __P((struct hash_table *ht, void *item, void const *slot));
void *hash_delete __P((struct hash_table *ht, void const *item));
void *hash_delete_at __P((struct hash_table *ht, void const *slot));
void hash_delete_items __P((struct hash_table *ht));
void hash_free_items __P((struct hash_table *ht));
void hash_free __P((struct hash_table *ht, int free_items));
void hash_map __P((struct hash_table *ht, hash_map_func_t map));
void hash_print_stats __P((struct hash_table *ht, FILE *out_FILE));
void **hash_dump __P((struct hash_table *ht, void **vector_0, qsort_cmp_t compare));
extern void *hash_deleted_item;
#define HASH_VACANT(item) ((item) == 0 || (void *) (item) == hash_deleted_item)
/* hash and comparison macros for string keys. */
#define STRING_HASH_1(_key_, _result_) { \
unsigned char const *kk = (unsigned char const *) (_key_) - 1; \
while (*++kk) \
(_result_) += (*kk << (kk[1] & 0xf)); \
} while (0)
#define return_STRING_HASH_1(_key_) do { \
unsigned long result = 0; \
STRING_HASH_1 ((_key_), result); \
return result; \
} while (0)
#define STRING_HASH_2(_key_, _result_) do { \
unsigned char const *kk = (unsigned char const *) (_key_) - 1; \
while (*++kk) \
(_result_) += (*kk << (kk[1] & 0x7)); \
} while (0)
#define return_STRING_HASH_2(_key_) do { \
unsigned long result = 0; \
STRING_HASH_2 ((_key_), result); \
return result; \
} while (0)
#define STRING_COMPARE(_x_, _y_, _result_) do { \
unsigned char const *xx = (unsigned char const *) (_x_) - 1; \
unsigned char const *yy = (unsigned char const *) (_y_) - 1; \
do { \
if (*++xx == '\0') { \
yy++; \
break; \
} \
} while (*xx == *++yy); \
(_result_) = *xx - *yy; \
} while (0)
#define return_STRING_COMPARE(_x_, _y_) do { \
int result; \
STRING_COMPARE (_x_, _y_, result); \
return result; \
} while (0)
/* hash and comparison macros for integer keys. */
#define INTEGER_HASH_1(_key_, _result_) do { \
(_result_) += ((unsigned long)(_key_)); \
} while (0)
#define return_INTEGER_HASH_1(_key_) do { \
unsigned long result = 0; \
INTEGER_HASH_1 ((_key_), result); \
return result; \
} while (0)
#define INTEGER_HASH_2(_key_, _result_) do { \
(_result_) += ~((unsigned long)(_key_)); \
} while (0)
#define return_INTEGER_HASH_2(_key_) do { \
unsigned long result = 0; \
INTEGER_HASH_2 ((_key_), result); \
return result; \
} while (0)
#define INTEGER_COMPARE(_x_, _y_, _result_) do { \
(_result_) = _x_ - _y_; \
} while (0)
#define return_INTEGER_COMPARE(_x_, _y_) do { \
int result; \
INTEGER_COMPARE (_x_, _y_, result); \
return result; \
} while (0)
/* hash and comparison macros for address keys. */
#define ADDRESS_HASH_1(_key_, _result_) INTEGER_HASH_1 (((unsigned long)(_key_)) >> 3, (_result_))
#define ADDRESS_HASH_2(_key_, _result_) INTEGER_HASH_2 (((unsigned long)(_key_)) >> 3, (_result_))
#define ADDRESS_COMPARE(_x_, _y_, _result_) INTEGER_COMPARE ((_x_), (_y_), (_result_))
#define return_ADDRESS_HASH_1(_key_) return_INTEGER_HASH_1 (((unsigned long)(_key_)) >> 3)
#define return_ADDRESS_HASH_2(_key_) return_INTEGER_HASH_2 (((unsigned long)(_key_)) >> 3)
#define return_ADDRESS_COMPARE(_x_, _y_) return_INTEGER_COMPARE ((_x_), (_y_))
#endif /* not _hash_h_ */

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@@ -83,9 +83,5 @@ char *xstrdup PARAMS ((const char *str));
/* Return a malloc'ed copy of SRC. */
# define CLONE(Src) CCLONE (Src, 1)
/* Wrappers for standard functions. */
#define CALLOC(t, n) ((t *) calloc (sizeof (t), (n)))
#define MALLOC(t, n) ((t *) xmalloc (sizeof (t) * (n)))
#define REALLOC(o, t, n) ((t *) xrealloc ((o), sizeof (t) * (n)))
#endif /* !XALLOC_H_ */