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. 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) 2) 34 35 typedef struct GTY (()) 36 { 37 /* The name of the source file involved. */ 38 const char *file; 39 40 /* The line-location in the source file. */ 41 int line; 42 43 int column; 44 45 /* In a system header?. */ 46 bool sysp; 47 } expanded_location; 48 49 extern expanded_location expand_location (source_location); 50 51 /* Historically GCC used location_t, while cpp used source_location. 52 This could be removed but it hardly seems worth the effort. */ 53 typedef source_location location_t; 54 55 /* Top-level source file. */ 56 extern const char *main_input_filename; 57 58 extern location_t input_location; 59 60 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file) 61 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line) 62 63 #define input_line LOCATION_LINE (input_location) 64 #define input_filename LOCATION_FILE (input_location) 65 #define in_system_header_at(LOC) ((expand_location (LOC)).sysp != 0) 66 #define in_system_header (in_system_header_at (input_location)) 67 68 #endif 69
