gcc-4_9/gcc/input.h

   1 /* Declarations for variables relating to reading the source file.
   2    Used by parsers, lexical analyzers, and error message routines.
   3    Copyright (C) 1993-2014 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 3, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along 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
  26 extern 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.  */
  36 extern char builtins_location_check[(BUILTINS_LOCATION
  37                                      < RESERVED_LOCATION_COUNT) ? 1 : -1];
  38
  39 extern expanded_location expand_location (source_location);
  40 extern const char *location_get_source_line (expanded_location xloc,
  41                                              int *line_size);
  42 extern expanded_location expand_location_to_spelling_point (source_location);
  43 extern source_location expansion_point_location_if_in_system_header (source_location);
  44
  45 /* Historically GCC used location_t, while cpp used source_location.
  46    This could be removed but it hardly seems worth the effort.  */
  47 typedef source_location location_t;
  48
  49 extern location_t input_location;
  50
  51 extern location_t location_with_discriminator (location_t, int);
  52 extern bool has_discriminator (location_t);
  53 extern location_t map_discriminator_location (location_t);
  54 extern int get_discriminator_from_locus (location_t);
  55
  56 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
  57 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
  58 #define LOCATION_COLUMN(LOC)((expand_location (LOC)).column)
  59 #define LOCATION_LOCUS(LOC) \
  60   ((IS_ADHOC_LOC (LOC)) ? get_location_from_adhoc_loc (line_table, LOC) \
  61    : (LOC))
  62 #define LOCATION_BLOCK(LOC) \
  63   ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \
  64    : NULL))
  65
  66 #define in_system_header_at(LOC) \
  67   ((linemap_location_in_system_header_p (line_table, \
  68                                          map_discriminator_location (LOC))))
  69
  70 void dump_line_table_statistics (void);
  71
  72 void diagnostics_file_cache_fini (void);
  73
  74 #endif