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, 2007
   4    Free Software Foundation, Inc.
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  21
  22 #ifndef GCC_INPUT_H
  23 #define GCC_INPUT_H
  24
  25 #include "line-map.h"
  26 extern GTY(()) 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 #define location_from_locus(LOCUS) (LOCUS)
  54
  55 #else /* ! USE_MAPPED_LOCATION */
  56
  57 struct location_s GTY(())
  58 {
  59   /* The name of the source file involved.  */
  60   const char *file;
  61
  62   /* The line-location in the source file.  */
  63   int line;
  64 };
  65
  66 typedef struct location_s expanded_location;
  67 typedef struct location_s location_t;
  68 typedef location_t *source_locus;
  69
  70 #define expand_location(FILELINE) (FILELINE)
  71 extern location_t unknown_location;
  72 #define UNKNOWN_LOCATION unknown_location
  73
  74 #define location_from_locus(LOCUS) (* (LOCUS))
  75
  76 #endif /* ! USE_MAPPED_LOCATION */
  77
  78 struct file_stack
  79 {
  80   struct file_stack *next;
  81   location_t location;
  82 };
  83
  84 /* Top-level source file.  */
  85 extern const char *main_input_filename;
  86
  87 extern location_t input_location;
  88 #ifdef USE_MAPPED_LOCATION
  89 extern void push_srcloc (location_t);
  90 #else /* ! USE_MAPPED_LOCATION */
  91 extern void push_srcloc (const char *name, int line);
  92 #endif /* ! USE_MAPPED_LOCATION */
  93 extern void pop_srcloc (void);
  94 extern void restore_input_file_stack (int);
  95
  96 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
  97 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
  98
  99 #define input_line LOCATION_LINE(input_location)
 100 #define input_filename LOCATION_FILE(input_location)
 101
 102 /* Stack of currently pending input files.
 103    The line member is not accurate for the innermost file on the stack.  */
 104 extern struct file_stack *input_file_stack;
 105
 106 /* Incremented on each change to input_file_stack.  */
 107 extern int input_file_stack_tick;
 108
 109 /* The number of bits available for input_file_stack_tick.  */
 110 #define INPUT_FILE_STACK_BITS   31
 111
 112 #endif