/* 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 Free Software Foundation, Inc.
+ 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 2, or (at your option) any later
+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
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. */
+along with GCC; see the file COPYING3. If not see
+<http://www.gnu.org/licenses/>. */
#ifndef GCC_INPUT_H
#define GCC_INPUT_H
-/* The data structure used to record a location in a translation unit. */
-/* Long-term, we want to get rid of this and typedef fileline location_t. */
-struct location_s GTY (())
+#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];
+
+typedef struct GTY (())
{
/* The name of the source file involved. */
const char *file;
/* The line-location in the source file. */
int line;
-};
-typedef struct location_s location_t;
-struct file_stack
-{
- struct file_stack *next;
- location_t location;
-};
+ int column;
-/* Top-level source file. */
-extern const char *main_input_filename;
+ /* In a system header?. */
+ bool sysp;
+} expanded_location;
-extern location_t input_location;
-#define input_line (input_location.line)
-#define input_filename (input_location.file)
+extern expanded_location expand_location (source_location);
-/* 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;
+/* 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;
-/* Incremented on each change to input_file_stack. */
-extern int input_file_stack_tick;
+#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
+#define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
-extern void push_srcloc (const char *name, int line);
-extern void pop_srcloc (void);
+#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))
#endif