mirror of
https://git.savannah.gnu.org/git/bison.git
synced 2026-08-21 08:44:32 +00:00
Akim Demaille
c0ef22ab0b
* data/yacc.c, src/Sbitset.c, src/Sbitset.h, src/muscle-tab.h, * src/output.c, src/parse-gram.y, src/reader.c, src/symtab.c, * src/uniqstr.c, src/uniqstr.h: Fix space before parens. * cfg.mk (_space_before_paren_exempt): Add needed exceptions.
180 lines
3.7 KiB
C
180 lines
3.7 KiB
C
/* Keep a unique copy of strings.
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Copyright (C) 2002-2005, 2009-2013 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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This program is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>. */
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#include <config.h>
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#include "system.h"
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#include <error.h>
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#include <hash.h>
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#include <quotearg.h>
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#include <stdarg.h>
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#include "uniqstr.h"
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/*-----------------------.
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| A uniqstr hash table. |
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`-----------------------*/
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/* Initial capacity of uniqstr hash table. */
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#define HT_INITIAL_CAPACITY 257
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static struct hash_table *uniqstrs_table = NULL;
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/*-------------------------------------.
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| Create the uniqstr for S if needed. |
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`-------------------------------------*/
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uniqstr
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uniqstr_new (char const *str)
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{
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uniqstr res = hash_lookup (uniqstrs_table, str);
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if (!res)
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{
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/* First insertion in the hash. */
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res = xstrdup (str);
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if (!hash_insert (uniqstrs_table, res))
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xalloc_die ();
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}
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return res;
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}
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uniqstr
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uniqstr_vsprintf (char const *format, ...)
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{
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va_list args;
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size_t length;
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va_start (args, format);
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length = vsnprintf (NULL, 0, format, args);
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va_end (args);
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char res[length + 1];
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va_start (args, format);
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vsprintf (res, format, args);
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va_end (args);
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return uniqstr_new (res);
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}
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/*------------------------------.
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| Abort if S is not a uniqstr. |
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`------------------------------*/
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void
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uniqstr_assert (char const *str)
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{
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if (!hash_lookup (uniqstrs_table, str))
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{
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error (0, 0,
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"not a uniqstr: %s", quotearg (str));
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abort ();
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}
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}
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/*--------------------.
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| Print the uniqstr. |
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`--------------------*/
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static inline bool
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uniqstr_print (uniqstr ustr)
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{
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fprintf (stderr, "%s\n", ustr);
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return true;
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}
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static bool
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uniqstr_print_processor (void *ustr, void *null ATTRIBUTE_UNUSED)
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{
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return uniqstr_print (ustr);
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}
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int
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uniqstr_cmp (uniqstr l, uniqstr r)
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{
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return (l == r ? 0
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: !l ? -1
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: !r ? +1
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: strcmp (l, r));
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}
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/*-----------------------.
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| A uniqstr hash table. |
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`-----------------------*/
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static bool
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hash_compare_uniqstr (void const *m1, void const *m2)
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{
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return STREQ (m1, m2);
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}
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static size_t
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hash_uniqstr (void const *m, size_t tablesize)
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{
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return hash_string (m, tablesize);
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}
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/*----------------------------.
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| Create the uniqstrs table. |
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`----------------------------*/
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void
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uniqstrs_new (void)
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{
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uniqstrs_table = hash_initialize (HT_INITIAL_CAPACITY,
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NULL,
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hash_uniqstr,
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hash_compare_uniqstr,
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free);
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}
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/*-------------------------------------.
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| Perform a task on all the uniqstrs. |
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`-------------------------------------*/
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static void
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uniqstrs_do (Hash_processor processor, void *processor_data)
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{
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hash_do_for_each (uniqstrs_table, processor, processor_data);
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}
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/*-----------------.
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| Print them all. |
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`-----------------*/
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void
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uniqstrs_print (void)
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{
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uniqstrs_do (uniqstr_print_processor, NULL);
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}
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/*--------------------.
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| Free the uniqstrs. |
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`--------------------*/
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void
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uniqstrs_free (void)
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{
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hash_free (uniqstrs_table);
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}
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