/* Declarations for variables relating to reading the source file.
   Used by parsers, lexical analyzers, and error message routines.
   Copyright (C) 1993, 1997, 1998, 2000 Free Software Foundation, Inc.

This file is part of GCC.

GCC is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free
Software Foundation; either version 2, or (at your option) any later
version.

GCC is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or
FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
for more details.

You should have received a copy of the GNU General Public License
along with GCC; see the file COPYING.  If not, write to the Free
Software Foundation, 59 Temple Place - Suite 330, Boston, MA
02111-1307, USA.  */

/* Source file current line is coming from.  */
extern const char *input_filename;

/* Top-level source file.  */
extern const char *main_input_filename;

/* Line number in current source file.  */
extern int lineno;

/* Stream for reading from input file.  */
extern FILE *finput;

struct file_stack
  {
    const char *name;
    struct file_stack *next;
    int line;
  };

/* Stack of currently pending input files.
   The line member is not accurate for the innermost file on the stack.  */
extern struct file_stack *input_file_stack;

/* Incremented on each change to input_file_stack.  */
extern int input_file_stack_tick;

extern void push_srcloc PARAMS ((const char *name, int line));
extern void pop_srcloc PARAMS ((void));
