-/* Source file current line is coming from. */
-extern char *input_filename;
+/* 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
+ Free Software Foundation, Inc.
-/* Top-level source file. */
-extern char *main_input_filename;
+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 number in current source file. */
-extern int lineno;
+/* 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];
+
+typedef struct GTY (())
+{
+ /* The name of the source file involved. */
+ const char *file;
+
+ /* The line-location in the source file. */
+ int line;
+
+ int column;
+
+ /* In a system header?. */
+ bool sysp;
+} expanded_location;
+
+extern expanded_location expand_location (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;
+
+/* Top-level source file. */
+extern const char *main_input_filename;
-/* Stream for reading from input file. */
-extern FILE *finput;
+extern location_t input_location;
-struct file_stack
- {
- char *name;
- struct file_stack *next;
- int line;
- };
+#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
+#define LOCATION_LINE(LOC) ((expand_location (LOC)).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;
+#define input_line LOCATION_LINE (input_location)
+#define input_filename LOCATION_FILE (input_location)
+#define in_system_header_at(LOC) ((expand_location (LOC)).sysp != 0)
+#define in_system_header (in_system_header_at (input_location))
-/* Incremented on each change to input_file_stack. */
-extern int input_file_stack_tick;
+#endif
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