1 /* Locations for Bison
2 Copyright (C) 2002, 2004, 2005, 2006 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., 51 Franklin Street, Fifth Floor,
19 Boston, MA 02110-1301, USA. */
20
21 #ifndef LOCATION_H_
22 # define LOCATION_H_
23
24 # include "uniqstr.h"
25
26 /* A boundary between two characters. */
27 typedef struct
28 {
29 /* The name of the file that contains the boundary. */
30 uniqstr file;
31
32 /* The (origin-1) line that contains the boundary.
33 If this is INT_MAX, the line number has overflowed. */
34 int line;
35
36 /* The (origin-1) column just after the boundary. This is neither a
37 byte count, nor a character count; it is a column count.
38 If this is INT_MAX, the column number has overflowed. */
39 int column;
40
41 } boundary;
42
43 /* Return nonzero if A and B are equal boundaries. */
44 static inline bool
equal_boundaries(boundary a,boundary b)45 equal_boundaries (boundary a, boundary b)
46 {
47 return (a.column == b.column
48 && a.line == b.line
49 && UNIQSTR_EQ (a.file, b.file));
50 }
51
52 /* A location, that is, a region of source code. */
53 typedef struct
54 {
55 /* Boundary just before the location starts. */
56 boundary start;
57
58 /* Boundary just after the location ends. */
59 boundary end;
60
61 } location;
62
63 #define YYLTYPE location
64
65 extern location const empty_location;
66
67 void location_print (FILE *out, location loc);
68
69 #endif /* ! defined LOCATION_H_ */
70