/* Locations for Bison
- Copyright (C) 2002, 2004, 2005, 2006 Free Software Foundation, Inc.
+
+ Copyright (C) 2002, 2004-2012 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_
/* 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;
+/* Set the position of \a a. */
+static inline void
+boundary_set (boundary *b, const char *f, int l, int c)
+{
+ b->file = f;
+ b->line = l;
+ b->column = c;
+}
+
+/* Return -1, 0, 1, depending whether a is before, equal, or
+ after b. */
+static inline int
+boundary_cmp (boundary a, boundary b)
+{
+ int res = strcmp (a.file, b.file);
+ if (!res)
+ res = a.line - b.line;
+ if (!res)
+ res = a.column - b.column;
+ return res;
+}
+
/* Return nonzero if A and B are equal boundaries. */
static inline bool
equal_boundaries (boundary a, boundary b)
{
return (a.column == b.column
- && a.line == b.line
- && UNIQSTR_EQ (a.file, b.file));
+ && a.line == b.line
+ && UNIQSTR_EQ (a.file, b.file));
}
/* A location, that is, a region of source code. */
} location;
-#define YYLTYPE location
+#define GRAM_LTYPE location
+#define EMPTY_LOCATION_INIT {{NULL, 0, 0}, {NULL, 0, 0}}
extern location const empty_location;
-void location_print (FILE *out, location loc);
+/* Set *LOC and adjust scanner cursor to account for token TOKEN of
+ size SIZE. */
+void location_compute (location *loc,
+ boundary *cur, char const *token, size_t size);
+
+/* Print location to file. Return number of actually printed
+ characters. */
+unsigned location_print (FILE *out, location loc);
+
+/* Return -1, 0, 1, depending whether a is before, equal, or
+ after b. */
+static inline int
+location_cmp (location a, location b)
+{
+ int res = boundary_cmp (a.start, b.start);
+ if (!res)
+ res = boundary_cmp (a.end, b.end);
+ return res;
+}
+
+/* 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_ */