gcc/input.h

   1 /* Declarations for variables relating to reading the source file.
   2    Used by parsers, lexical analyzers, and error message routines.
   3    Copyright (C) 1993, 1997, 1998, 2000, 2003, 2004 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING.  If not, write to the Free
  19 Software Foundation, 51 Franklin Street, Fifth Floor, Boston, MA
  20 02110-1301, USA.  */
  21
  22 #ifndef GCC_INPUT_H
  23 #define GCC_INPUT_H
  24
  25 #include "line-map.h"
  26 extern struct line_maps line_table;
  27
  28 /* The location for declarations in "<built-in>" */
  29 #define BUILTINS_LOCATION ((source_location) 2)
  30
  31 /* Note: if any of the types defined inside this #ifdef are changed,
  32    gengtype.c:define_location_structures must be updated to match.  */
  33
  34 #ifdef USE_MAPPED_LOCATION
  35
  36 typedef struct
  37 {
  38   /* The name of the source file involved.  */
  39   const char *file;
  40
  41   /* The line-location in the source file.  */
  42   int line;
  43
  44   int column;
  45 } expanded_location;
  46
  47 extern expanded_location expand_location (source_location);
  48
  49 #define UNKNOWN_LOCATION ((source_location) 0)
  50 typedef source_location location_t; /* deprecated typedef */
  51 typedef source_location source_locus; /* to be removed */
  52
  53 #else /* ! USE_MAPPED_LOCATION */
  54
  55 struct location_s GTY(())
  56 {
  57   /* The name of the source file involved.  */
  58   const char *file;
  59
  60   /* The line-location in the source file.  */
  61   int line;
  62 };
  63
  64 typedef struct location_s expanded_location;
  65 typedef struct location_s location_t;
  66 typedef location_t *source_locus;
  67
  68 #define expand_location(FILELINE) (FILELINE)
  69 extern location_t unknown_location;
  70 #define UNKNOWN_LOCATION unknown_location
  71
  72 #endif /* ! USE_MAPPED_LOCATION */
  73
  74 struct file_stack
  75 {
  76   struct file_stack *next;
  77   location_t location;
  78 };
  79
  80 /* Top-level source file.  */
  81 extern const char *main_input_filename;
  82
  83 extern location_t input_location;
  84 #ifdef USE_MAPPED_LOCATION
  85 extern void push_srcloc (location_t);
  86 #else /* ! USE_MAPPED_LOCATION */
  87 extern void push_srcloc (const char *name, int line);
  88 #endif /* ! USE_MAPPED_LOCATION */
  89 extern void pop_srcloc (void);
  90 extern void restore_input_file_stack (int);
  91
  92 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
  93 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
  94
  95 #define input_line LOCATION_LINE(input_location)
  96 #define input_filename LOCATION_FILE(input_location)
  97
  98 /* Stack of currently pending input files.
  99    The line member is not accurate for the innermost file on the stack.  */
 100 extern struct file_stack *input_file_stack;
 101
 102 /* Incremented on each change to input_file_stack.  */
 103 extern int input_file_stack_tick;
 104
 105 /* The number of bits available for input_file_stack_tick.  */
 106 #define INPUT_FILE_STACK_BITS   31
 107
 108 #endif