summaryrefslogtreecommitdiff
path: root/gcc/input.h
blob: f58d248834228cea17b15c2b73b155e32dec1153 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
/* Declarations for variables relating to reading the source file.
   Used by parsers, lexical analyzers, and error message routines.
   Copyright (C) 1993-2017 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 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;
extern GTY(()) struct line_maps *saved_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];

extern bool is_location_from_builtin_token (source_location);
extern expanded_location expand_location (source_location);
extern const char *location_get_source_line (const char *file_path, int line,
					     int *line_size);
extern bool location_missing_trailing_newline (const char *file_path);
extern expanded_location expand_location_to_spelling_point (source_location);
extern source_location expansion_point_location_if_in_system_header (source_location);
extern source_location expansion_point_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;

extern location_t input_location;

#define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
#define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
#define LOCATION_COLUMN(LOC)((expand_location (LOC)).column)
#define LOCATION_LOCUS(LOC) \
  ((IS_ADHOC_LOC (LOC)) ? get_location_from_adhoc_loc (line_table, LOC) \
   : (LOC))
#define LOCATION_BLOCK(LOC) \
  ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \
   : NULL))
#define RESERVED_LOCATION_P(LOC) \
  (LOCATION_LOCUS (LOC) < RESERVED_LOCATION_COUNT)

/* Return a positive value if LOCATION is the locus of a token that is
   located in a system header, O otherwise. It returns 1 if LOCATION
   is the locus of a token that is located in a system header, and 2
   if LOCATION is the locus of a token located in a C system header
   that therefore needs to be extern "C" protected in C++.

   Note that this function returns 1 if LOCATION belongs to a token
   that is part of a macro replacement-list defined in a system
   header, but expanded in a non-system file.  */
#define in_system_header_at(LOC) \
  (linemap_location_in_system_header_p (line_table, LOC))
/* Return a positive value if LOCATION is the locus of a token that
   comes from a macro expansion, O otherwise.  */
#define from_macro_expansion_at(LOC) \
  ((linemap_location_from_macro_expansion_p (line_table, LOC)))
/* Return a positive value if LOCATION is the locus of a token that comes from
   a macro definition, O otherwise.  This differs from from_macro_expansion_at
   in its treatment of macro arguments, for which this returns false.  */
#define from_macro_definition_at(LOC) \
  ((linemap_location_from_macro_definition_p (line_table, LOC)))

static inline location_t
get_pure_location (location_t loc)
{
  return get_pure_location (line_table, loc);
}

/* Get the start of any range encoded within location LOC.  */

static inline location_t
get_start (location_t loc)
{
  return get_range_from_loc (line_table, loc).m_start;
}

/* Get the endpoint of any range encoded within location LOC.  */

static inline location_t
get_finish (location_t loc)
{
  return get_range_from_loc (line_table, loc).m_finish;
}

extern location_t make_location (location_t caret,
				 location_t start, location_t finish);
extern location_t make_location (location_t caret, source_range src_range);

void dump_line_table_statistics (void);

void dump_location_info (FILE *stream);

void diagnostics_file_cache_fini (void);

void diagnostics_file_cache_forcibly_evict_file (const char *file_path);

struct GTY(()) string_concat
{
  string_concat (int num, location_t *locs);

  int m_num;
  location_t * GTY ((atomic)) m_locs;
};

struct location_hash : int_hash <location_t, UNKNOWN_LOCATION> { };

class GTY(()) string_concat_db
{
 public:
  string_concat_db ();
  void record_string_concatenation (int num, location_t *locs);

  bool get_string_concatenation (location_t loc,
				 int *out_num,
				 location_t **out_locs);

 private:
  static location_t get_key_loc (location_t loc);

  /* For the fields to be private, we must grant access to the
     generated code in gtype-desc.c.  */

  friend void ::gt_ggc_mx_string_concat_db (void *x_p);
  friend void ::gt_pch_nx_string_concat_db (void *x_p);
  friend void ::gt_pch_p_16string_concat_db (void *this_obj, void *x_p,
					     gt_pointer_operator op,
					     void *cookie);

  hash_map <location_hash, string_concat *> *m_table;
};

#endif