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/* Declarations for variables relating to reading the source file.
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Used by parsers, lexical analyzers, and error message routines.
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Copyright (C) 1993, 1997, 1998, 2000, 2003, 2004, 2007
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Free Software Foundation, Inc.
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This file is part of GCC.
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GCC is free software; you can redistribute it and/or modify it under
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the terms of the GNU General Public License as published by the Free
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Software Foundation; either version 3, or (at your option) any later
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version.
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GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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for more details.
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You should have received a copy of the GNU General Public License
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along with GCC; see the file COPYING3. If not see
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<http://www.gnu.org/licenses/>. */
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#ifndef GCC_INPUT_H
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#define GCC_INPUT_H
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#include "line-map.h"
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extern struct line_maps line_table;
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/* The location for declarations in "<built-in>" */
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#define BUILTINS_LOCATION ((source_location) 2)
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#ifdef USE_MAPPED_LOCATION
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typedef struct
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{
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/* The name of the source file involved. */
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const char *file;
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/* The line-location in the source file. */
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int line;
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int column;
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} expanded_location;
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extern expanded_location expand_location (source_location);
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#define UNKNOWN_LOCATION ((source_location) 0)
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typedef source_location location_t; /* deprecated typedef */
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typedef source_location source_locus; /* to be removed */
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#else /* ! USE_MAPPED_LOCATION */
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struct location_s GTY(())
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{
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/* The name of the source file involved. */
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const char *file;
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/* The line-location in the source file. */
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int line;
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};
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typedef struct location_s expanded_location;
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typedef struct location_s location_t;
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typedef location_t *source_locus;
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#define expand_location(FILELINE) (FILELINE)
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extern location_t unknown_location;
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#define UNKNOWN_LOCATION unknown_location
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#endif /* ! USE_MAPPED_LOCATION */
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struct file_stack
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{
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struct file_stack *next;
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location_t location;
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};
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/* Top-level source file. */
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extern const char *main_input_filename;
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extern location_t input_location;
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#ifdef USE_MAPPED_LOCATION
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extern void push_srcloc (location_t);
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#else /* ! USE_MAPPED_LOCATION */
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extern void push_srcloc (const char *name, int line);
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#endif /* ! USE_MAPPED_LOCATION */
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extern void pop_srcloc (void);
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extern void restore_input_file_stack (int);
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#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
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#define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
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#define input_line LOCATION_LINE(input_location)
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#define input_filename LOCATION_FILE(input_location)
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/* Stack of currently pending input files.
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The line member is not accurate for the innermost file on the stack. */
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extern struct file_stack *input_file_stack;
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/* Incremented on each change to input_file_stack. */
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extern int input_file_stack_tick;
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/* The number of bits available for input_file_stack_tick. */
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#define INPUT_FILE_STACK_BITS 31
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#endif
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