1 /* Declarations for variables relating to reading the source file.
2 Used by parsers, lexical analyzers, and error message routines.
3 Copyright (C) 1993, 1997, 1998, 2000, 2003, 2004, 2007, 2008
4 Free Software Foundation, Inc.
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
27 extern GTY(()) struct line_maps *line_table;
29 /* A value which will never be used to represent a real location. */
30 #define UNKNOWN_LOCATION ((source_location) 0)
32 /* The location for declarations in "<built-in>" */
33 #define BUILTINS_LOCATION ((source_location) 2)
35 typedef struct GTY (())
37 /* The name of the source file involved. */
40 /* The line-location in the source file. */
46 extern expanded_location expand_location (source_location);
48 /* Historically GCC used location_t, while cpp used source_location.
49 This could be removed but it hardly seems worth the effort. */
50 typedef source_location location_t;
54 struct file_stack *next;
58 /* Top-level source file. */
59 extern const char *main_input_filename;
61 extern location_t input_location;
62 extern void push_srcloc (location_t);
63 extern void pop_srcloc (void);
64 extern void restore_input_file_stack (int);
66 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
67 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
69 #define input_line LOCATION_LINE (input_location)
70 #define input_filename LOCATION_FILE (input_location)
72 /* Stack of currently pending input files.
73 The line member is not accurate for the innermost file on the stack. */
74 extern struct file_stack *input_file_stack;
76 /* Incremented on each change to input_file_stack. */
77 extern int input_file_stack_tick;
79 /* The number of bits available for input_file_stack_tick. */
80 #define INPUT_FILE_STACK_BITS 31