1 /* Declarations for variables relating to reading the source file.
2 Used by parsers, lexical analyzers, and error message routines.
3 Copyright (C) 1993-2016 Free Software Foundation, Inc.
5 This file is part of GCC.
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 3, or (at your option) any later
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
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING3. If not see
19 <http://www.gnu.org/licenses/>. */
26 extern GTY(()) struct line_maps
*line_table
;
27 extern GTY(()) struct line_maps
*saved_line_table
;
29 /* A value which will never be used to represent a real location. */
30 #define UNKNOWN_LOCATION ((source_location) 0)
32 /* The location for declarations in "<built-in>" */
33 #define BUILTINS_LOCATION ((source_location) 1)
35 /* line-map.c reserves RESERVED_LOCATION_COUNT to the user. Ensure
36 both UNKNOWN_LOCATION and BUILTINS_LOCATION fit into that. */
37 extern char builtins_location_check
[(BUILTINS_LOCATION
38 < RESERVED_LOCATION_COUNT
) ? 1 : -1];
40 extern bool is_location_from_builtin_token (source_location
);
41 extern expanded_location
expand_location (source_location
);
42 extern const char *location_get_source_line (const char *file_path
, int line
,
44 extern bool location_missing_trailing_newline (const char *file_path
);
45 extern expanded_location
expand_location_to_spelling_point (source_location
);
46 extern source_location
expansion_point_location_if_in_system_header (source_location
);
47 extern source_location
expansion_point_location (source_location
);
49 /* Historically GCC used location_t, while cpp used source_location.
50 This could be removed but it hardly seems worth the effort. */
51 typedef source_location location_t
;
53 extern location_t input_location
;
55 #define LOCATION_FILE(LOC) ((expand_location (LOC)).file)
56 #define LOCATION_LINE(LOC) ((expand_location (LOC)).line)
57 #define LOCATION_COLUMN(LOC)((expand_location (LOC)).column)
58 #define LOCATION_LOCUS(LOC) \
59 ((IS_ADHOC_LOC (LOC)) ? get_location_from_adhoc_loc (line_table, LOC) \
61 #define LOCATION_BLOCK(LOC) \
62 ((tree) ((IS_ADHOC_LOC (LOC)) ? get_data_from_adhoc_loc (line_table, (LOC)) \
65 /* Return a positive value if LOCATION is the locus of a token that is
66 located in a system header, O otherwise. It returns 1 if LOCATION
67 is the locus of a token that is located in a system header, and 2
68 if LOCATION is the locus of a token located in a C system header
69 that therefore needs to be extern "C" protected in C++.
71 Note that this function returns 1 if LOCATION belongs to a token
72 that is part of a macro replacement-list defined in a system
73 header, but expanded in a non-system file. */
74 #define in_system_header_at(LOC) \
75 (linemap_location_in_system_header_p (line_table, LOC))
76 /* Return a positive value if LOCATION is the locus of a token that
77 comes from a macro expansion, O otherwise. */
78 #define from_macro_expansion_at(LOC) \
79 ((linemap_location_from_macro_expansion_p (line_table, LOC)))
80 /* Return a positive value if LOCATION is the locus of a token that comes from
81 a macro definition, O otherwise. This differs from from_macro_expansion_at
82 in its treatment of macro arguments, for which this returns false. */
83 #define from_macro_definition_at(LOC) \
84 ((linemap_location_from_macro_definition_p (line_table, LOC)))
86 static inline location_t
87 get_pure_location (location_t loc
)
89 return get_pure_location (line_table
, loc
);
92 /* Get the start of any range encoded within location LOC. */
94 static inline location_t
95 get_start (location_t loc
)
97 return get_range_from_loc (line_table
, loc
).m_start
;
100 /* Get the endpoint of any range encoded within location LOC. */
102 static inline location_t
103 get_finish (location_t loc
)
105 return get_range_from_loc (line_table
, loc
).m_finish
;
108 extern location_t
make_location (location_t caret
,
109 location_t start
, location_t finish
);
111 void dump_line_table_statistics (void);
113 void dump_location_info (FILE *stream
);
115 void diagnostics_file_cache_fini (void);
117 void diagnostics_file_cache_forcibly_evict_file (const char *file_path
);
119 struct GTY(()) string_concat
121 string_concat (int num
, location_t
*locs
);
124 location_t
* GTY ((atomic
)) m_locs
;
127 struct location_hash
: int_hash
<location_t
, UNKNOWN_LOCATION
> { };
129 class GTY(()) string_concat_db
133 void record_string_concatenation (int num
, location_t
*locs
);
135 bool get_string_concatenation (location_t loc
,
137 location_t
**out_locs
);
140 static location_t
get_key_loc (location_t loc
);
142 /* For the fields to be private, we must grant access to the
143 generated code in gtype-desc.c. */
145 friend void ::gt_ggc_mx_string_concat_db (void *x_p
);
146 friend void ::gt_pch_nx_string_concat_db (void *x_p
);
147 friend void ::gt_pch_p_16string_concat_db (void *this_obj
, void *x_p
,
148 gt_pointer_operator op
,
151 hash_map
<location_hash
, string_concat
*> *m_table
;