Esempio n. 1
0
static bool
gfc_init (void)
{
  if (!gfc_cpp_enabled ())
    {
      linemap_add (line_table, LC_ENTER, false, gfc_source_file, 1);
      linemap_add (line_table, LC_RENAME, false, "<built-in>", 0);
    }
  else
    gfc_cpp_init_0 ();

  gfc_init_decl_processing ();
  gfc_static_ctors = NULL_TREE;

  if (gfc_cpp_enabled ())
    gfc_cpp_init ();

  gfc_init_1 ();

  if (!gfc_new_file ())
    fatal_error ("can't open input file: %s", gfc_source_file);

  if (flag_preprocess_only)
    return false;

  return true;
}
source_location
linemap_line_start (struct line_maps *set, linenum_type to_line,
		    unsigned int max_column_hint)
{
  struct line_map *map = &set->maps[set->used - 1];
  source_location highest = set->highest_location;
  source_location r;
  linenum_type last_line = SOURCE_LINE (map, set->highest_line);
  int line_delta = to_line - last_line;
  bool add_map = false;
  if (line_delta < 0
      || (line_delta > 10 && line_delta * map->column_bits > 1000)
      || (max_column_hint >= (1U << map->column_bits))
      || (max_column_hint <= 80 && map->column_bits >= 10))
    {
      add_map = true;
    }
  else
    max_column_hint = set->max_column_hint;
  if (add_map)
    {
      int column_bits;
      if (max_column_hint > 100000 || highest > 0xC0000000)
	{
	  /* If the column number is ridiculous or we've allocated a huge
	     number of source_locations, give up on column numbers. */
	  max_column_hint = 0;
	  if (highest >0xF0000000)
	    return 0;
	  column_bits = 0;
	}
      else
	{
	  column_bits = 7;
	  while (max_column_hint >= (1U << column_bits))
	    column_bits++;
	  max_column_hint = 1U << column_bits;
	}
      /* Allocate the new line_map.  However, if the current map only has a
	 single line we can sometimes just increase its column_bits instead. */
      if (line_delta < 0
	  || last_line != map->to_line
	  || SOURCE_COLUMN (map, highest) >= (1U << column_bits))
	map = (struct line_map *) linemap_add (set, LC_RENAME, map->sysp,
					       map->to_file, to_line);
      map->column_bits = column_bits;
      r = map->start_location + ((to_line - map->to_line) << column_bits);
    }
  else
    r = highest - SOURCE_COLUMN (map, highest)
      + (line_delta << map->column_bits);
  set->highest_line = r;
  if (r > set->highest_location)
    set->highest_location = r;
  set->max_column_hint = max_column_hint;
  return r;
}
Esempio n. 3
0
static gfc_file *
get_file (char *name, enum lc_reason reason ATTRIBUTE_UNUSED)
{
  gfc_file *f;

  f = gfc_getmem (sizeof (gfc_file));

  f->filename = gfc_getmem (strlen (name) + 1);
  strcpy (f->filename, name);

  f->next = file_head;
  file_head = f;

  f->included_by = current_file;
  if (current_file != NULL)
    f->inclusion_line = current_file->line;

#ifdef USE_MAPPED_LOCATION
  linemap_add (&line_table, reason, false, f->filename, 1);
#endif

  return f;
}
Esempio n. 4
0
load_file (char *filename, bool initial)
{
  char *line;
  gfc_linebuf *b;
  gfc_file *f;
  FILE *input;
  int len, line_len;

  for (f = current_file; f; f = f->up)
    if (strcmp (filename, f->filename) == 0)
      {
	gfc_error_now ("File '%s' is being included recursively", filename);
	return FAILURE;
      }

  if (initial)
    {
      input = gfc_open_file (filename);
      if (input == NULL)
	{
	  gfc_error_now ("Can't open file '%s'", filename);
	  return FAILURE;
	}
    }
  else
    {
      input = gfc_open_included_file (filename, false);
      if (input == NULL)
	{
	  gfc_error_now ("Can't open included file '%s'", filename);
	  return FAILURE;
	}
    }

  /* Load the file.  */

  f = get_file (filename, initial ? LC_RENAME : LC_ENTER);
  f->up = current_file;
  current_file = f;
  current_file->line = 1;
  line = NULL;
  line_len = 0;

  for (;;) 
    {
      int trunc = load_line (input, &line, &line_len);

      len = strlen (line);
      if (feof (input) && len == 0)
	break;

      /* There are three things this line can be: a line of Fortran
	 source, an include line or a C preprocessor directive.  */

      if (line[0] == '#')
	{
	  preprocessor_line (line);
	  continue;
	}

      if (include_line (line))
	{
	  current_file->line++;
	  continue;
	}

      /* Add line.  */

      b = gfc_getmem (gfc_linebuf_header_size + len + 1);

#ifdef USE_MAPPED_LOCATION
      b->location
	= linemap_line_start (&line_table, current_file->line++, 120);
#else
      b->linenum = current_file->line++;
#endif
      b->file = current_file;
      b->truncated = trunc;
      strcpy (b->line, line);

      if (line_head == NULL)
	line_head = b;
      else
	line_tail->next = b;

      line_tail = b;
    }

  /* Release the line buffer allocated in load_line.  */
  gfc_free (line);

  fclose (input);

  current_file = current_file->up;
#ifdef USE_MAPPED_LOCATION
  linemap_add (&line_table, LC_LEAVE, 0, NULL, 0);
#endif
  return SUCCESS;
}
Esempio n. 5
0
source_location
linemap_line_start (struct line_maps *set, linenum_type to_line,
		    unsigned int max_column_hint)
{
  struct line_map *map = LINEMAPS_LAST_ORDINARY_MAP (set);
  source_location highest = set->highest_location;
  source_location r;
  linenum_type last_line =
    SOURCE_LINE (map, set->highest_line);
  int line_delta = to_line - last_line;
  bool add_map = false;

  if (line_delta < 0
      || (line_delta > 10
	  && line_delta * ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map) > 1000)
      || (max_column_hint >= (1U << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map)))
      || (max_column_hint <= 80
	  && ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map) >= 10))
    {
      add_map = true;
    }
  else
    max_column_hint = set->max_column_hint;
  if (add_map)
    {
      int column_bits;
      if (max_column_hint > 100000 || highest > 0xC0000000)
	{
	  /* If the column number is ridiculous or we've allocated a huge
	     number of source_locations, give up on column numbers. */
	  max_column_hint = 0;
	  if (highest >0xF0000000)
	    return 0;
	  column_bits = 0;
	}
      else
	{
	  column_bits = 7;
	  while (max_column_hint >= (1U << column_bits))
	    column_bits++;
	  max_column_hint = 1U << column_bits;
	}
      /* Allocate the new line_map.  However, if the current map only has a
	 single line we can sometimes just increase its column_bits instead. */
      if (line_delta < 0
	  || last_line != ORDINARY_MAP_STARTING_LINE_NUMBER (map)
	  || SOURCE_COLUMN (map, highest) >= (1U << column_bits))
	map = (struct line_map *) linemap_add (set, LC_RENAME,
					       ORDINARY_MAP_IN_SYSTEM_HEADER_P
					       (map),
					       ORDINARY_MAP_FILE_NAME (map),
					       to_line);
      ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map) = column_bits;
      r = (MAP_START_LOCATION (map)
	   + ((to_line - ORDINARY_MAP_STARTING_LINE_NUMBER (map))
	      << column_bits));
    }
  else
    r = highest - SOURCE_COLUMN (map, highest)
      + (line_delta << ORDINARY_MAP_NUMBER_OF_COLUMN_BITS (map));

  /* Locations of ordinary tokens are always lower than locations of
     macro tokens.  */
  if (r >= LINEMAPS_MACRO_LOWEST_LOCATION (set))
    return 0;

  set->highest_line = r;
  if (r > set->highest_location)
    set->highest_location = r;
  set->max_column_hint = max_column_hint;
  return r;
}