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, 2009, 2010 4 Free Software Foundation, Inc. 5 6 This file is part of GCC. 7 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 11 version. 12 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 16 for more details. 17 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/>. */ 21 22 #ifndef GCC_INPUT_H 23 #define GCC_INPUT_H 24 25 #include "line-map.h" 26 27 extern GTY(()) struct line_maps *line_table; 28 29 /* A value which will never be used to represent a real location. */ 30 #define UNKNOWN_LOCATION ((source_location) 0) 31 32 /* The location for declarations in "<built-in>" */ 33 #define BUILTINS_LOCATION ((source_location) 1) 34 35 /* line-map.c reserves RESERVED_LOCATION_COUNT to the user. Ensure 36 both UNKNOWN_LOCATION and BUILTINS_LOCATION fit into that. */ 37 extern char builtins_location_check[(BUILTINS_LOCATION 38 < RESERVED_LOCATION_COUNT) ? 1 : -1]; 39 40 extern expanded_location expand_location (source_location); 41 42 /* Historically GCC used location_t, while cpp used source_location. 43 This could be removed but it hardly seems worth the effort. */ 44 typedef source_location location_t; 45 46 extern location_t input_location; 47 48 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file) 49 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line) 50 #define LOCATION_COLUMN(LOC)((expand_location (LOC)).column) 51 52 #define input_line LOCATION_LINE (input_location) 53 #define input_filename LOCATION_FILE (input_location) 54 #define in_system_header_at(LOC) \ 55 ((linemap_location_in_system_header_p (line_table, LOC))) 56 #define in_system_header (in_system_header_at (input_location)) 57 58 void dump_line_table_statistics (void); 59 60 #endif 61