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 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 /* The data structure used to record a location in a translation unit.  */
  26 /* Long-term, we want to get rid of this and typedef fileline location_t.  */
  27 struct location_s GTY (())
  28 {
  29   /* The name of the source file involved.  */
  30   const char *file;
  31
  32   /* The line-location in the source file.  */
  33   int line;
  34 };
  35 typedef struct location_s location_t;
  36
  37 struct file_stack
  38 {
  39   struct file_stack *next;
  40   location_t location;
  41 };
  42
  43 /* Top-level source file.  */
  44 extern const char *main_input_filename;
  45
  46 extern location_t input_location;
  47 #define input_line (input_location.line)
  48 #define input_filename (input_location.file)
  49
  50 /* Stack of currently pending input files.
  51    The line member is not accurate for the innermost file on the stack.  */
  52 extern struct file_stack *input_file_stack;
  53
  54 /* Stack of EXPR_WITH_FILE_LOCATION nested expressions.  */
  55 extern struct file_stack *expr_wfl_stack;
  56
  57 /* Incremented on each change to input_file_stack.  */
  58 extern int input_file_stack_tick;
  59
  60 extern void push_srcloc (const char *name, int line);
  61 extern void pop_srcloc (void);
  62
  63 #endif