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 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 2, 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 COPYING.  If not, write to the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22 #ifndef GCC_INPUT_H
  23 #define GCC_INPUT_H
  24
  25 #include "line-map.h"
  26 extern struct line_maps line_table;
  27
  28 /* The location for declarations in "<built-in>" */
  29 #define BUILTINS_LOCATION ((source_location) 2)
  30
  31 typedef struct location_s GTY(())
  32 {
  33   /* The name of the source file involved.  */
  34   const char *file;
  35
  36   /* The line-location in the source file.  */
  37   int line;
  38
  39   /* FUTURE (but confuses gentype): int column. */
  40 } expanded_location;
  41
  42 #ifdef USE_MAPPED_LOCATION
  43
  44 extern expanded_location expand_location (source_location);
  45
  46 #define UNKNOWN_LOCATION ((source_location) 0)
  47 typedef source_location location_t; /* deprecated typedef */
  48 typedef source_location source_locus; /* to be removed */
  49
  50 #else /* ! USE_MAPPED_LOCATION */
  51
  52 typedef struct location_s location_t;
  53 typedef location_t *source_locus;
  54
  55 #define expand_location(FILELINE) (FILELINE)
  56 extern location_t unknown_location;
  57 #define UNKNOWN_LOCATION unknown_location
  58
  59 #endif /* ! USE_MAPPED_LOCATION */
  60
  61 struct file_stack
  62 {
  63   struct file_stack *next;
  64   location_t location;
  65 };
  66
  67 /* Top-level source file.  */
  68 extern const char *main_input_filename;
  69
  70 extern location_t input_location;
  71 #ifdef USE_MAPPED_LOCATION
  72 extern void push_srcloc (location_t);
  73 #else /* ! USE_MAPPED_LOCATION */
  74 extern void push_srcloc (const char *name, int line);
  75 #endif /* ! USE_MAPPED_LOCATION */
  76 extern void pop_srcloc (void);
  77
  78 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
  79 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
  80
  81 #define input_line LOCATION_LINE(input_location)
  82 #define input_filename LOCATION_FILE(input_location)
  83
  84 /* Stack of currently pending input files.
  85    The line member is not accurate for the innermost file on the stack.  */
  86 extern struct file_stack *input_file_stack;
  87
  88 /* Incremented on each change to input_file_stack.  */
  89 extern int input_file_stack_tick;
  90
  91 #endif