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;
}
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;
}
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;
}
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;
}
