1/* Declarations for variables relating to reading the source file. 2 Used by parsers, lexical analyzers, and error message routines. 3 Copyright (C) 1993-2015 Free Software Foundation, Inc. 4 5This file is part of GCC. 6 7GCC is free software; you can redistribute it and/or modify it under 8the terms of the GNU General Public License as published by the Free 9Software Foundation; either version 3, or (at your option) any later 10version. 11 12GCC is distributed in the hope that it will be useful, but WITHOUT ANY 13WARRANTY; without even the implied warranty of MERCHANTABILITY or 14FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 15for more details. 16 17You should have received a copy of the GNU General Public License 18along with GCC; see the file COPYING3. If not see 19<http://www.gnu.org/licenses/>. */ 20 21#ifndef GCC_INPUT_H 22#define GCC_INPUT_H 23 24#include "line-map.h" 25 26extern GTY(()) struct line_maps *line_table; 27 28/* A value which will never be used to represent a real location. */ 29#define UNKNOWN_LOCATION ((source_location) 0) 30 31/* The location for declarations in "<built-in>" */ 32#define BUILTINS_LOCATION ((source_location) 1) 33 34/* line-map.c reserves RESERVED_LOCATION_COUNT to the user. Ensure 35 both UNKNOWN_LOCATION and BUILTINS_LOCATION fit into that. */ 36extern char builtins_location_check[(BUILTINS_LOCATION 37 < RESERVED_LOCATION_COUNT) ? 1 : -1]; 38 39extern bool is_location_from_builtin_token (source_location); 40extern expanded_location expand_location (source_location); 41extern const char *location_get_source_line (expanded_location xloc, 42 int *line_size); 43extern expanded_location expand_location_to_spelling_point (source_location); 44extern source_location expansion_point_location_if_in_system_header (source_location); 45 46/* Historically GCC used location_t, while cpp used source_location. 47 This could be removed but it hardly seems worth the effort. */ 48typedef source_location location_t; 49 50extern location_t input_location; 51 52#define LOCATION_FILE(LOC) ((expand_location (LOC)).file) 53#define LOCATION_LINE(LOC) ((expand_location (LOC)).line) 54#define LOCATION_COLUMN(LOC)((expand_location (LOC)).column) 55#define LOCATION_LOCUS(LOC) \ 56 ((IS_ADHOC_LOC (LOC)) ? get_location_from_adhoc_loc (line_table, LOC) \ 57 : (LOC)) 58#define LOCATION_BLOCK(LOC) \ 59 ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \ 60 : NULL)) 61 62/* Return a positive value if LOCATION is the locus of a token that is 63 located in a system header, O otherwise. It returns 1 if LOCATION 64 is the locus of a token that is located in a system header, and 2 65 if LOCATION is the locus of a token located in a C system header 66 that therefore needs to be extern "C" protected in C++. 67 68 Note that this function returns 1 if LOCATION belongs to a token 69 that is part of a macro replacement-list defined in a system 70 header, but expanded in a non-system file. */ 71#define in_system_header_at(LOC) \ 72 (linemap_location_in_system_header_p (line_table, LOC)) 73 74void dump_line_table_statistics (void); 75 76void diagnostics_file_cache_fini (void); 77 78#endif 79