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53 lines
1.6 KiB
C
53 lines
1.6 KiB
C
/* Keeping a unique copy of strings.
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Copyright (C) 2002 Free Software Foundation, Inc.
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This file is part of Bison, the GNU Compiler Compiler.
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Bison 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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Bison 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 Bison; see the file COPYING. If not, write to
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the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
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Boston, MA 02111-1307, USA. */
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#ifndef UNIQSTR_H_
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# define UNIQSTR_H_
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/*-----------------------------------------.
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| Pointers to unique copies of C strings. |
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`-----------------------------------------*/
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typedef char const *uniqstr;
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/* Return the uniqstr for S. */
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uniqstr uniqstr_new (char const *s);
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/* Two uniqstr have the same value iff they are the same. */
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#define UNIQSTR_EQ(S1, S2) ((S1) == (S2))
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/*--------------------------------------.
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| Initializing, destroying, debugging. |
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`--------------------------------------*/
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/* Create the string table. */
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void uniqstrs_new (void);
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/* Die if S is not a uniqstr. */
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void uniqstr_assert (char const *s);
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/* Free all the memory allocated for symbols. */
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void uniqstrs_free (void);
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/* Report them all. */
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void uniqstrs_print (void);
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#endif /* ! defined UNIQSTR_H_ */
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