gcclibs/libcpp/line-map.c

29 /* Initialize a line map set.  */
32 linemap_init (struct line_maps *set)
34   set->maps = NULL;
35   set->allocated = 0;
36   set->used = 0;
37   set->last_listed = -1;
38   set->trace_includes = false;
39   set->depth = 0;
40   set->cache = 0;
41   set->highest_location = 0;
42   set->highest_line = 0;
43   set->max_column_hint = 0;
49 linemap_check_files_exited (struct line_maps *set)
54   for (map = &set->maps[set->used - 1]; ! MAIN_FILE_P (map);
55        map = INCLUDED_FROM (set, map))
60 /* Free a line map set.  */
63 linemap_free (struct line_maps *set)
65   if (set->maps)
67       linemap_check_files_exited (set);
69       free (set->maps);
83    function.  A call to this function can relocate the previous set of
84    A call to this function can relocate the previous set of
88 linemap_add (struct line_maps *set, enum lc_reason reason,
92   source_location start_location = set->highest_location + 1;
94   if (set->used && start_location < set->maps[set->used - 1].start_location)
97   if (set->used == set->allocated)
99       set->allocated = 2 * set->allocated + 256;
100       set->maps = XRESIZEVEC (struct line_map, set->maps, set->allocated);
103   map = &set->maps[set->used];
110   if (set->depth == 0)
121 	      set->depth--;
130 	  from = INCLUDED_FROM (set, map - 1);
154   set->cache = set->used++;
156   set->highest_location = start_location;
157   set->highest_line = start_location;
158   set->max_column_hint = 0;
162       map->included_from = set->depth == 0 ? -1 : (int) (set->used - 2);
163       set->depth++;
164       if (set->trace_includes)
165 	trace_include (set, map);
171       set->depth--;
172       map->included_from = INCLUDED_FROM (set, map - 1)->included_from;
179 linemap_line_start (struct line_maps *set, unsigned int to_line,
182   struct line_map *map = &set->maps[set->used - 1];
183   source_location highest = set->highest_location;
185   unsigned int last_line = SOURCE_LINE (map, set->highest_line);
196     max_column_hint = set->max_column_hint;
221 	map = (struct line_map*) linemap_add (set, LC_RENAME, map->sysp,
229   set->highest_line = r;
230   if (r > set->highest_location)
231     set->highest_location = r;
232   set->max_column_hint = max_column_hint;
237 linemap_position_for_column (struct line_maps *set, unsigned int to_column)
239   source_location r = set->highest_line;
240   if (to_column >= set->max_column_hint)
249 	  struct line_map *map = &set->maps[set->used - 1];
250 	  r = linemap_line_start (set, SOURCE_LINE (map, r), to_column + 50);
254   if (r >= set->highest_location)
255     set->highest_location = r;
260    (source file, line) pair can be deduced.  Since the set is built
265 linemap_lookup (struct line_maps *set, source_location line)
270   mn = set->cache;
271   mx = set->used;
273   cached = &set->maps[mn];
289       if (set->maps[md].start_location > line)
295   set->cache = mn;
296   return &set->maps[mn];
304 linemap_print_containing_files (struct line_maps *set,
307   if (MAIN_FILE_P (map) || set->last_listed == map->included_from)
310   set->last_listed = map->included_from;
311   map = INCLUDED_FROM (set, map);
318       map = INCLUDED_FROM (set, map);
341 trace_include (const struct line_maps *set, const struct line_map *map)
343   unsigned int i = set->depth;