remove useless variable.

[bison.git] / src / location.h

diff --git a/src/location.h b/src/location.h
index 150b842f6db80e93c021d7f83d1f3cc5edf27e6d..a99232bdab0b88709facf867a243bbd374ef801a 100644 (file)
--- a/src/location.h
+++ b/src/location.h
@@ -1,27 +1,25 @@
 /* Locations for Bison
-   Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+   Copyright (C) 2002, 2004, 2005, 2006, 2007, 2008, 2009 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
+   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 2, or (at your option)
-   any later version.
+   the Free Software Foundation, either version 3 of the License, or
+   (at your option) any later version.
 
-   Bison is distributed in the hope that it will be useful,
+   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 Bison; see the file COPYING.  If not, write to
-   the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
-   Boston, MA 02110-1301, USA.  */
+   along with this program.  If not, see <http://www.gnu.org/licenses/>.  */
 
 #ifndef LOCATION_H_
 # define LOCATION_H_
 
-# include <stdbool.h>
 # include "uniqstr.h"
 
 /* A boundary between two characters.  */
@@ -30,13 +28,20 @@ typedef struct
   /* The name of the file that contains the boundary.  */
   uniqstr file;
 
-  /* The (origin-1) line that contains the boundary.
-     If this is INT_MAX, the line number has overflowed.  */
+  /* If nonnegative, the (origin-1) line that contains the boundary.
+     If this is INT_MAX, the line number has overflowed.
+
+     Meaningless and not displayed if negative.
+  */
   int line;
 
-  /* The (origin-1) column just after the boundary.  This is neither a
-     byte count, nor a character count; it is a column count.
-     If this is INT_MAX, the column number has overflowed.  */
+  /* If nonnegative, the (origin-1) column just after the boundary.
+     This is neither a byte count, nor a character count; it is a
+     column count.  If this is INT_MAX, the column number has
+     overflowed.
+
+     Meaningless and not displayed if negative.
+  */
   int column;
 
 } boundary;
@@ -45,9 +50,9 @@ typedef struct
 static inline void
 boundary_set (boundary *b, const char *f, int l, int c)
 {
-  b->file = f; 
-  b->line = l;         
-  b->column = c;               
+  b->file = f;
+  b->line = l;
+  b->column = c;
 }
 
 /* Return nonzero if A and B are equal boundaries.  */
@@ -72,6 +77,7 @@ typedef struct
 
 #define YYLTYPE location
 
+#define EMPTY_LOCATION_INIT {{NULL, 0, 0}, {NULL, 0, 0}}
 extern location const empty_location;
 
 /* Set *LOC and adjust scanner cursor to account for token TOKEN of
@@ -81,4 +87,7 @@ void location_compute (location *loc,
 
 void location_print (FILE *out, location loc);
 
+/* LOC_STR must be formatted as `file:line.column', it will be modified.  */
+void boundary_set_from_string (boundary *bound, char *loc_str);
+
 #endif /* ! defined LOCATION_H_ */