src/state.c

/* Type definitions for nondeterministic finite state machine for bison,
   Copyright 2001 Free Software Foundation, Inc.

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

   Bison 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.

   Bison 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 Bison; see the file COPYING.  If not, write to
   the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
   Boston, MA 02111-1307, USA.  */


#include "system.h"
#include "state.h"

/*---------------------------------.
| Create a new array of N shitfs.  |
`---------------------------------*/

#define SHIFTS_ALLOC(Nshifts)						\
  (shifts *) xcalloc ((unsigned) (sizeof (shifts) 			\
                                  + (Nshifts - 1) * sizeof (short)), 1)

shifts *
shifts_new (int n)
{
  shifts *res = SHIFTS_ALLOC (n);
  res->nshifts = n;
  return res;
}


/*-------------------------------.
| Create a new array of N errs.  |
`-------------------------------*/

#define ERRS_ALLOC(Nerrs)						\
  (errs *) xcalloc ((unsigned) (sizeof (errs) 				\
                                  + (Nerrs - 1) * sizeof (short)), 1)


errs *
errs_new (int n)
{
  errs *res = ERRS_ALLOC (n);
  res->nerrs = n;
  return res;
}


errs *
errs_dup (errs *src)
{
  errs *res = errs_new (src->nerrs);
  memcpy (res->errs, src->errs, src->nerrs);
  return res;
}

/*-------------------------------------.
| Create a new array of N reductions.  |
`-------------------------------------*/

#define REDUCTIONS_ALLOC(Nreductions)					\
  (reductions *) xcalloc ((unsigned) (sizeof (reductions)		\
                                  + (Nreductions - 1) * sizeof (short)), 1)

reductions *
reductions_new (int n)
{
  reductions *res = REDUCTIONS_ALLOC (n);
  res->nreds = n;
  return res;
}
Commit	Line	Data
	1	/* Type definitions for nondeterministic finite state machine for bison,
	2	Copyright 2001 Free Software Foundation, Inc.
	3
	4	This file is part of Bison, the GNU Compiler Compiler.
	5
	6	Bison is free software; you can redistribute it and/or modify
	7	it under the terms of the GNU General Public License as published by
	8	the Free Software Foundation; either version 2, or (at your option)
	9	any later version.
	10
	11	Bison is distributed in the hope that it will be useful,
	12	but WITHOUT ANY WARRANTY; without even the implied warranty of
	13	MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	14	GNU General Public License for more details.
	15
	16	You should have received a copy of the GNU General Public License
	17	along with Bison; see the file COPYING. If not, write to
	18	the Free Software Foundation, Inc., 59 Temple Place - Suite 330,
	19	Boston, MA 02111-1307, USA. */
	20
	21
	22	#include "system.h"
	23	#include "state.h"
	24
	25	/*---------------------------------.
	26	\| Create a new array of N shitfs. \|
	27	`---------------------------------*/
	28
	29	#define SHIFTS_ALLOC(Nshifts) \
	30	(shifts *) xcalloc ((unsigned) (sizeof (shifts) \
	31	+ (Nshifts - 1) * sizeof (short)), 1)
	32
	33	shifts *
	34	shifts_new (int n)
	35	{
	36	shifts *res = SHIFTS_ALLOC (n);
	37	res->nshifts = n;
	38	return res;
	39	}
	40
	41
	42	/*-------------------------------.
	43	\| Create a new array of N errs. \|
	44	`-------------------------------*/
	45
	46	#define ERRS_ALLOC(Nerrs) \
	47	(errs *) xcalloc ((unsigned) (sizeof (errs) \
	48	+ (Nerrs - 1) * sizeof (short)), 1)
	49
	50
	51	errs *
	52	errs_new (int n)
	53	{
	54	errs *res = ERRS_ALLOC (n);
	55	res->nerrs = n;
	56	return res;
	57	}
	58
	59
	60	errs *
	61	errs_dup (errs *src)
	62	{
	63	errs *res = errs_new (src->nerrs);
	64	memcpy (res->errs, src->errs, src->nerrs);
	65	return res;
	66	}
	67
	68	/*-------------------------------------.
	69	\| Create a new array of N reductions. \|
	70	`-------------------------------------*/
	71
	72	#define REDUCTIONS_ALLOC(Nreductions) \
	73	(reductions *) xcalloc ((unsigned) (sizeof (reductions) \
	74	+ (Nreductions - 1) * sizeof (short)), 1)
	75
	76	reductions *
	77	reductions_new (int n)
	78	{
	79	reductions *res = REDUCTIONS_ALLOC (n);
	80	res->nreds = n;
	81	return res;
	82	}