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/* Declarations for variables relating to reading the source file.

   Used by parsers, lexical analyzers, and error message routines.

   Copyright (C) 1993, 1997, 1998, 2000, 2003, 2004, 2007, 2008, 2009, 2010

   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 3, 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 COPYING3.  If not see

<http://www.gnu.org/licenses/>.  */

#ifndef GCC_INPUT_H

#define GCC_INPUT_H

#include "line-map.h"

extern GTY(()) struct line_maps *line_table;

/* A value which will never be used to represent a real location.  */

#define UNKNOWN_LOCATION ((source_location) 0)

/* The location for declarations in "<built-in>" */

#define BUILTINS_LOCATION ((source_location) 1)

/* line-map.c reserves RESERVED_LOCATION_COUNT to the user.  Ensure

   both UNKNOWN_LOCATION and BUILTINS_LOCATION fit into that.  */

extern char builtins_location_check[(BUILTINS_LOCATION

                                     < RESERVED_LOCATION_COUNT) ? 1 : -1];

extern expanded_location expand_location (source_location);

extern const char * location_get_source_line(expanded_location xloc);

extern expanded_location expand_location_to_spelling_point (source_location);

extern source_location expansion_point_location_if_in_system_header (source_location);

/* Historically GCC used location_t, while cpp used source_location.

   This could be removed but it hardly seems worth the effort.  */

typedef source_location location_t;

extern location_t input_location;

#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)

#define LOCATION_LINE(LOC) ((expand_location (LOC)).line)

#define LOCATION_COLUMN(LOC)((expand_location (LOC)).column)

#define LOCATION_LOCUS(LOC) \

  ((IS_ADHOC_LOC(LOC)) ? get_location_from_adhoc_loc (line_table, LOC) : (LOC))

#define LOCATION_BLOCK(LOC) \

  ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \

  : NULL))

#define input_line LOCATION_LINE (input_location)

#define input_filename LOCATION_FILE (input_location)

#define in_system_header_at(LOC) \

  ((linemap_location_in_system_header_p (line_table, LOC)))

#define in_system_header (in_system_header_at (input_location))

void dump_line_table_statistics (void);

#endif