+++ /dev/null
-/* Map logical line numbers to (source file, line number) pairs.
- Copyright (C) 2001
- Free Software Foundation, Inc.
-
-This program 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 2, or (at your option) any
-later version.
-
-This program 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 this program; if not, write to the Free Software
-Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
-
- In other words, you are welcome to use, share and improve this program.
- You are forbidden to forbid anyone else to use, share and improve
- what you give them. Help stamp out software-hoarding! */
-
-#include "config.h"
-#include "system.h"
-#include "line-map.h"
-#include "intl.h"
-
-static void trace_include
- PARAMS ((const struct line_maps *, const struct line_map *));
-
-/* Initialize a line map set. */
-
-void
-init_line_maps (set)
- struct line_maps *set;
-{
- set->maps = 0;
- set->allocated = 0;
- set->used = 0;
- set->last_listed = -1;
- set->trace_includes = false;
- set->depth = 0;
-}
-
-/* Free a line map set. */
-
-void
-free_line_maps (set)
- struct line_maps *set;
-{
- if (set->maps)
- {
- struct line_map *map;
-
- /* Depending upon whether we are handling preprocessed input or
- not, this can be a user error or an ICE. */
- for (map = CURRENT_LINE_MAP (set); ! MAIN_FILE_P (map);
- map = INCLUDED_FROM (set, map))
- fprintf (stderr, "line-map.c: file \"%s\" entered but not left\n",
- map->to_file);
-
- free (set->maps);
- }
-}
-
-/* Add a mapping of logical source line to physical source file and
- line number. Ther text pointed to by TO_FILE must have a lifetime
- at least as long as the final call to lookup_line ().
-
- FROM_LINE should be monotonic increasing across calls to this
- function. */
-
-const struct line_map *
-add_line_map (set, reason, sysp, from_line, to_file, to_line)
- struct line_maps *set;
- enum lc_reason reason;
- unsigned int sysp;
- unsigned int from_line;
- const char *to_file;
- unsigned int to_line;
-{
- struct line_map *map;
-
- if (set->used && from_line < set->maps[set->used - 1].from_line)
- abort ();
-
- if (set->used == set->allocated)
- {
- set->allocated = 2 * set->allocated + 256;
- set->maps = (struct line_map *)
- xrealloc (set->maps, set->allocated * sizeof (struct line_map));
- }
-
- map = &set->maps[set->used++];
-
- /* If we don't keep our line maps consistent, we can easily
- segfault. Don't rely on the client to do it for us. */
- if (set->depth == 0)
- reason = LC_ENTER;
- else if (reason == LC_LEAVE)
- {
- struct line_map *from;
- bool error;
-
- if (MAIN_FILE_P (map - 1))
- {
- error = true;
- reason = LC_RENAME;
- from = map - 1;
- }
- else
- {
- from = INCLUDED_FROM (set, map - 1);
- error = to_file && strcmp (from->to_file, to_file);
- }
-
- /* Depending upon whether we are handling preprocessed input or
- not, this can be a user error or an ICE. */
- if (error)
- fprintf (stderr, "line-map.c: file \"%s\" left but not entered\n",
- to_file);
-
- /* A TO_FILE of NULL is special - we use the natural values. */
- if (error || to_file == NULL)
- {
- to_file = from->to_file;
- to_line = LAST_SOURCE_LINE (from) + 1;
- sysp = from->sysp;
- }
- }
-
- map->reason = reason;
- map->sysp = sysp;
- map->from_line = from_line;
- map->to_file = to_file;
- map->to_line = to_line;
-
- if (reason == LC_ENTER)
- {
- set->depth++;
- map->included_from = set->used - 2;
- if (set->trace_includes)
- trace_include (set, map);
- }
- else if (reason == LC_RENAME)
- map->included_from = map[-1].included_from;
- else if (reason == LC_LEAVE)
- {
- set->depth--;
- map->included_from = INCLUDED_FROM (set, map - 1)->included_from;
- }
-
- return map;
-}
-
-/* Given a logical line, returns the map from which the corresponding
- (source file, line) pair can be deduced. Since the set is built
- chronologically, the logical lines are monotonic increasing, and so
- the list is sorted and we can use a binary search. */
-
-const struct line_map *
-lookup_line (set, line)
- struct line_maps *set;
- unsigned int line;
-{
- unsigned int md, mn = 0, mx = set->used;
-
- if (mx == 0)
- abort ();
-
- while (mx - mn > 1)
- {
- md = (mn + mx) / 2;
- if (set->maps[md].from_line > line)
- mx = md;
- else
- mn = md;
- }
-
- return &set->maps[mn];
-}
-
-/* Print the file names and line numbers of the #include commands
- which led to the map MAP, if any, to stderr. Nothing is output if
- the most recently listed stack is the same as the current one. */
-
-void
-print_containing_files (set, map)
- struct line_maps *set;
- const struct line_map *map;
-{
- if (MAIN_FILE_P (map) || set->last_listed == map->included_from)
- return;
-
- set->last_listed = map->included_from;
- map = INCLUDED_FROM (set, map);
-
- fprintf (stderr, _("In file included from %s:%u"),
- map->to_file, LAST_SOURCE_LINE (map));
-
- while (! MAIN_FILE_P (map))
- {
- map = INCLUDED_FROM (set, map);
- /* Translators note: this message is used in conjunction
- with "In file included from %s:%ld" and some other
- tricks. We want something like this:
-
- | In file included from sys/select.h:123,
- | from sys/types.h:234,
- | from userfile.c:31:
- | bits/select.h:45: <error message here>
-
- with all the "from"s lined up.
- The trailing comma is at the beginning of this message,
- and the trailing colon is not translated. */
- fprintf (stderr, _(",\n from %s:%u"),
- map->to_file, LAST_SOURCE_LINE (map));
- }
-
- fputs (":\n", stderr);
-}
-
-/* Print an include trace, for e.g. the -H option of the preprocessor. */
-
-static void
-trace_include (set, map)
- const struct line_maps *set;
- const struct line_map *map;
-{
- unsigned int i = set->depth;
-
- while (--i)
- putc ('.', stderr);
- fprintf (stderr, " %s\n", map->to_file);
-}
projects / msp430-gcc.git / blobdiff