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79 lines
2.8 KiB
C
79 lines
2.8 KiB
C
/* hash.h -- header file for gas hash table routines
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Copyright (C) 1987, 92, 93, 95, 1999 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS 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 2, or (at your option)
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any later version.
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GAS 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 GAS; see the file COPYING. If not, write to the Free
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Software Foundation, 59 Temple Place - Suite 330, Boston, MA
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02111-1307, USA. */
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#ifndef HASH_H
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#define HASH_H
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struct hash_control;
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/* Create a hash table. This return a control block. */
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extern struct hash_control *hash_new PARAMS ((void));
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/* Delete a hash table, freeing all allocated memory. */
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extern void hash_die PARAMS ((struct hash_control *));
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/* Insert an entry into a hash table. This returns NULL on success.
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On error, it returns a printable string indicating the error. It
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is considered to be an error if the entry already exists in the
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hash table. */
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extern const char *hash_insert PARAMS ((struct hash_control *,
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const char *key, PTR value));
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/* Insert or replace an entry in a hash table. This returns NULL on
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success. On error, it returns a printable string indicating the
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error. If an entry already exists, its value is replaced. */
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extern const char *hash_jam PARAMS ((struct hash_control *,
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const char *key, PTR value));
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/* Replace an existing entry in a hash table. This returns the old
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value stored for the entry. If the entry is not found in the hash
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table, this does nothing and returns NULL. */
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extern PTR hash_replace PARAMS ((struct hash_control *, const char *key,
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PTR value));
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/* Find an entry in a hash table, returning its value. Returns NULL
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if the entry is not found. */
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extern PTR hash_find PARAMS ((struct hash_control *, const char *key));
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/* Delete an entry from a hash table. This returns the value stored
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for that entry, or NULL if there is no such entry. */
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extern PTR hash_delete PARAMS ((struct hash_control *, const char *key));
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/* Traverse a hash table. Call the function on every entry in the
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hash table. */
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extern void hash_traverse PARAMS ((struct hash_control *,
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void (*pfn) (const char *key, PTR value)));
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/* Print hash table statistics on the specified file. NAME is the
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name of the hash table, used for printing a header. */
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extern void hash_print_statistics PARAMS ((FILE *, const char *name,
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struct hash_control *));
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#endif /* HASH_H */
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