src/location.h

/* Locations for Bison
   Copyright (C) 2002  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.  */

#ifndef LOCATION_H_
# define LOCATION_H_
# include "quotearg.h"

typedef struct location_s
{
  const char *file;
  int first_line;
  int first_column;
  int last_line;
  int last_column;
}  location_t;
#define YYLTYPE location_t

/* Initialize LOC. */
# define LOCATION_RESET(Loc)			\
do {						\
  (Loc).file = NULL;				\
  (Loc).first_column = (Loc).first_line = 1;	\
  (Loc).last_column =  (Loc).last_line = 1;	\
} while (0)

/* Advance of NUM columns. */
# define LOCATION_COLUMNS(Loc, Num)		\
do {						\
  (Loc).last_column += Num;			\
} while (0)


/* Advance of NUM lines. */
# define LOCATION_LINES(Loc, Num)		\
do {						\
  (Loc).last_column = 1;			\
  (Loc).last_line += Num;			\
} while (0)


/* Restart: move the first cursor to the last position. */
# define LOCATION_STEP(Loc)			\
do {						\
  (Loc).first_column = (Loc).last_column;	\
  (Loc).first_line = (Loc).last_line;		\
} while (0)


/* Output LOC on the stream OUT. */
# define LOCATION_PRINT(Out, Loc)					\
do {									\
  fprintf (stderr, "%s:", quotearg_style (escape_quoting_style, 	\
					  (Loc).file));			\
  if ((Loc).first_line != (Loc).last_line)				\
    fprintf (Out, "%d.%d-%d.%d",					\
             (Loc).first_line, (Loc).first_column,			\
             (Loc).last_line, (Loc).last_column - 1);			\
  else if ((Loc).first_column < (Loc).last_column - 1)			\
    fprintf (Out, "%d.%d-%d", (Loc).first_line,				\
             (Loc).first_column, (Loc).last_column - 1);		\
  else									\
    fprintf (Out, "%d.%d", (Loc).first_line, (Loc).first_column);	\
} while (0)


extern location_t empty_location;
#endif /* !LOCATION_H_ */
Commit	Line	Data
	1	/* Locations for Bison
	2	Copyright (C) 2002 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	#ifndef LOCATION_H_
	22	# define LOCATION_H_
	23	# include "quotearg.h"
	24
	25	typedef struct location_s
	26	{
	27	const char *file;
	28	int first_line;
	29	int first_column;
	30	int last_line;
	31	int last_column;
	32	} location_t;
	33	#define YYLTYPE location_t
	34
	35	/* Initialize LOC. */
	36	# define LOCATION_RESET(Loc) \
	37	do { \
	38	(Loc).file = NULL; \
	39	(Loc).first_column = (Loc).first_line = 1; \
	40	(Loc).last_column = (Loc).last_line = 1; \
	41	} while (0)
	42
	43	/* Advance of NUM columns. */
	44	# define LOCATION_COLUMNS(Loc, Num) \
	45	do { \
	46	(Loc).last_column += Num; \
	47	} while (0)
	48
	49
	50	/* Advance of NUM lines. */
	51	# define LOCATION_LINES(Loc, Num) \
	52	do { \
	53	(Loc).last_column = 1; \
	54	(Loc).last_line += Num; \
	55	} while (0)
	56
	57
	58	/* Restart: move the first cursor to the last position. */
	59	# define LOCATION_STEP(Loc) \
	60	do { \
	61	(Loc).first_column = (Loc).last_column; \
	62	(Loc).first_line = (Loc).last_line; \
	63	} while (0)
	64
	65
	66	/* Output LOC on the stream OUT. */
	67	# define LOCATION_PRINT(Out, Loc) \
	68	do { \
	69	fprintf (stderr, "%s:", quotearg_style (escape_quoting_style, \
	70	(Loc).file)); \
	71	if ((Loc).first_line != (Loc).last_line) \
	72	fprintf (Out, "%d.%d-%d.%d", \
	73	(Loc).first_line, (Loc).first_column, \
	74	(Loc).last_line, (Loc).last_column - 1); \
	75	else if ((Loc).first_column < (Loc).last_column - 1) \
	76	fprintf (Out, "%d.%d-%d", (Loc).first_line, \
	77	(Loc).first_column, (Loc).last_column - 1); \
	78	else \
	79	fprintf (Out, "%d.%d", (Loc).first_line, (Loc).first_column); \
	80	} while (0)
	81
	82
	83
	84	extern location_t empty_location;
	85	#endif /* !LOCATION_H_ */