src/uniqstr.h

/* Keeping a unique copy of strings.

   Copyright (C) 2002, 2003, 2008, 2009 Free Software Foundation, Inc.

   This file is part of Bison, the GNU Compiler Compiler.

   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.

   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 UNIQSTR_H_
# define UNIQSTR_H_

/*-----------------------------------------.
| Pointers to unique copies of C strings.  |
`-----------------------------------------*/

typedef char const *uniqstr;

/* Return the uniqstr for STR.  */
uniqstr uniqstr_new (char const *str);

/* Two uniqstr values have the same value iff they are the same.  */
#define UNIQSTR_EQ(USTR1, USTR2) ((USTR1) == (USTR2))

/* Compare two uniqstr a la strcmp: negative for <, nul for =, and
   positive for >.  Undefined order, relies on addresses.  */
#define UNIQSTR_CMP(USTR1, USTR2) ((USTR1) - (USTR2))

/*--------------------------------------.
| Initializing, destroying, debugging.  |
`--------------------------------------*/

/* Create the string table.  */
void uniqstrs_new (void);

/* Die if STR is not a uniqstr.  */
void uniqstr_assert (char const *str);

/* Free all the memory allocated for symbols.  */
void uniqstrs_free (void);

/* Report them all.  */
void uniqstrs_print (void);

#endif /* ! defined UNIQSTR_H_ */
Commit	Line	Data
	1	/* Keeping a unique copy of strings.
	2
	3	Copyright (C) 2002, 2003, 2008, 2009 Free Software Foundation, Inc.
	4
	5	This file is part of Bison, the GNU Compiler Compiler.
	6
	7	This program is free software: you can redistribute it and/or modify
	8	it under the terms of the GNU General Public License as published by
	9	the Free Software Foundation, either version 3 of the License, or
	10	(at your option) any later version.
	11
	12	This program is distributed in the hope that it will be useful,
	13	but WITHOUT ANY WARRANTY; without even the implied warranty of
	14	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	15	GNU General Public License for more details.
	16
	17	You should have received a copy of the GNU General Public License
	18	along with this program. If not, see <http://www.gnu.org/licenses/>. */
	19
	20	#ifndef UNIQSTR_H_
	21	# define UNIQSTR_H_
	22
	23	/*-----------------------------------------.
	24	\| Pointers to unique copies of C strings. \|
	25	`-----------------------------------------*/
	26
	27	typedef char const *uniqstr;
	28
	29	/* Return the uniqstr for STR. */
	30	uniqstr uniqstr_new (char const *str);
	31
	32	/* Two uniqstr values have the same value iff they are the same. */
	33	#define UNIQSTR_EQ(USTR1, USTR2) ((USTR1) == (USTR2))
	34
	35	/* Compare two uniqstr a la strcmp: negative for <, nul for =, and
	36	positive for >. Undefined order, relies on addresses. */
	37	#define UNIQSTR_CMP(USTR1, USTR2) ((USTR1) - (USTR2))
	38
	39	/*--------------------------------------.
	40	\| Initializing, destroying, debugging. \|
	41	`--------------------------------------*/
	42
	43	/* Create the string table. */
	44	void uniqstrs_new (void);
	45
	46	/* Die if STR is not a uniqstr. */
	47	void uniqstr_assert (char const *str);
	48
	49	/* Free all the memory allocated for symbols. */
	50	void uniqstrs_free (void);
	51
	52	/* Report them all. */
	53	void uniqstrs_print (void);
	54
	55	#endif /* ! defined UNIQSTR_H_ */