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