#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tree.h"
#include "flags.h"
#include "intl.h"
#include "opts.h"
#include "options.h"
#include "tree-inline.h"
#include "gfortran.h"
#include "target.h"
gfc_option_t gfc_option;
static void
set_default_std_flags (void)
{
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95_DEL
| GFC_STD_F2003 | GFC_STD_F95 | GFC_STD_F77 | GFC_STD_GNU
| GFC_STD_LEGACY;
gfc_option.warn_std = GFC_STD_F95_DEL | GFC_STD_LEGACY;
}
unsigned int
gfc_init_options (unsigned int argc ATTRIBUTE_UNUSED,
const char **argv ATTRIBUTE_UNUSED)
{
gfc_source_file = NULL;
gfc_option.module_dir = NULL;
gfc_option.source_form = FORM_UNKNOWN;
gfc_option.fixed_line_length = -1;
gfc_option.free_line_length = -1;
gfc_option.max_continue_fixed = 19;
gfc_option.max_continue_free = 39;
gfc_option.max_identifier_length = GFC_MAX_SYMBOL_LEN;
gfc_option.max_subrecord_length = 0;
gfc_option.convert = CONVERT_NATIVE;
gfc_option.record_marker = 0;
gfc_option.verbose = 0;
gfc_option.warn_aliasing = 0;
gfc_option.warn_ampersand = 0;
gfc_option.warn_character_truncation = 0;
gfc_option.warn_conversion = 0;
gfc_option.warn_implicit_interface = 0;
gfc_option.warn_line_truncation = 0;
gfc_option.warn_surprising = 0;
gfc_option.warn_tabs = 1;
gfc_option.warn_underflow = 1;
gfc_option.max_errors = 25;
gfc_option.flag_all_intrinsics = 0;
gfc_option.flag_default_double = 0;
gfc_option.flag_default_integer = 0;
gfc_option.flag_default_real = 0;
gfc_option.flag_dollar_ok = 0;
gfc_option.flag_underscoring = 1;
gfc_option.flag_f2c = 0;
gfc_option.flag_second_underscore = -1;
gfc_option.flag_implicit_none = 0;
gfc_option.flag_max_stack_var_size = 32768;
gfc_option.flag_no_backend = 0;
gfc_option.flag_range_check = 1;
gfc_option.flag_pack_derived = 0;
gfc_option.flag_repack_arrays = 0;
gfc_option.flag_preprocessed = 0;
gfc_option.flag_automatic = 1;
gfc_option.flag_backslash = 1;
gfc_option.flag_cray_pointer = 0;
gfc_option.flag_d_lines = -1;
gfc_option.flag_openmp = 0;
gfc_option.fpe = 0;
flag_argument_noalias = 3;
flag_errno_math = 0;
set_default_std_flags ();
gfc_option.warn_nonstd_intrinsics = 0;
gfc_option.fshort_enums = targetm.default_short_enums ();
return CL_Fortran;
}
static gfc_source_form
form_from_filename (const char *filename)
{
static const struct
{
const char *extension;
gfc_source_form form;
}
exttype[] =
{
{
".f90", FORM_FREE}
,
{
".f95", FORM_FREE}
,
{
".f03", FORM_FREE}
,
{
".f", FORM_FIXED}
,
{
".for", FORM_FIXED}
,
{
"", FORM_UNKNOWN}
};
gfc_source_form f_form;
const char *fileext;
int i;
i = 0;
while (filename[i] != '\0')
i++;
while (i >= 0 && (filename[i] != '.'))
i--;
if (i < 0)
return FORM_UNKNOWN;
fileext = &(filename[i]);
i = -1;
f_form = FORM_UNKNOWN;
do
{
i++;
if (strcasecmp (fileext, exttype[i].extension) == 0)
{
f_form = exttype[i].form;
break;
}
}
while (exttype[i].form != FORM_UNKNOWN);
return f_form;
}
bool
gfc_post_options (const char **pfilename)
{
const char *filename = *pfilename, *canon_source_file = NULL;
char *source_path;
int i;
if (!filename || strcmp (filename, "-") == 0)
{
filename = "";
}
if (gfc_option.flag_preprocessed)
{
gfc_source_file = gfc_read_orig_filename (filename, &canon_source_file);
if (gfc_source_file == NULL)
gfc_source_file = filename;
else
*pfilename = gfc_source_file;
}
else
gfc_source_file = filename;
if (canon_source_file == NULL)
canon_source_file = gfc_source_file;
i = strlen (canon_source_file);
while (i > 0 && !IS_DIR_SEPARATOR (canon_source_file[i]))
i--;
if (i != 0)
{
source_path = alloca (i + 1);
memcpy (source_path, canon_source_file, i);
source_path[i] = 0;
gfc_add_include_path (source_path);
}
else
gfc_add_include_path (".");
if (canon_source_file != gfc_source_file)
gfc_free ((void *) canon_source_file);
if (gfc_option.source_form != FORM_UNKNOWN)
gfc_current_form = gfc_option.source_form;
else
{
gfc_current_form = form_from_filename (filename);
if (gfc_current_form == FORM_UNKNOWN)
{
gfc_current_form = FORM_FREE;
gfc_warning_now ("Reading file '%s' as free form.",
(filename[0] == '\0') ? "<stdin>" : filename);
}
}
if (gfc_current_form == FORM_FREE)
{
if (gfc_option.flag_d_lines == 0)
gfc_warning_now ("'-fd-lines-as-comments' has no effect "
"in free form.");
else if (gfc_option.flag_d_lines == 1)
gfc_warning_now ("'-fd-lines-as-code' has no effect "
"in free form.");
}
flag_inline_trees = 1;
if (!flag_no_inline)
flag_no_inline = 1;
if (flag_inline_functions)
flag_inline_trees = 2;
if (pedantic && (gfc_option.allow_std & GFC_STD_GNU) != 0)
gfc_option.warn_std |= GFC_STD_GNU;
if (pedantic && (gfc_option.allow_std & GFC_STD_LEGACY) != 0)
gfc_option.warn_std |= GFC_STD_F95_OBS | GFC_STD_F95_DEL | GFC_STD_LEGACY;
if (gfc_option.flag_second_underscore == -1)
gfc_option.flag_second_underscore = gfc_option.flag_f2c;
if (!gfc_option.flag_automatic)
gfc_option.flag_max_stack_var_size = 0;
if (pedantic)
{
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
}
if (gfc_option.flag_all_intrinsics)
gfc_option.warn_nonstd_intrinsics = 0;
return false;
}
static void
set_Wall (int setting)
{
gfc_option.warn_aliasing = setting;
gfc_option.warn_ampersand = setting;
gfc_option.warn_line_truncation = setting;
gfc_option.warn_nonstd_intrinsics = setting;
gfc_option.warn_surprising = setting;
gfc_option.warn_tabs = !setting;
gfc_option.warn_underflow = setting;
gfc_option.warn_character_truncation = setting;
set_Wunused (setting);
warn_return_type = setting;
warn_switch = setting;
if (setting == 0)
warn_uninitialized = 0;
else if (warn_uninitialized != 1)
warn_uninitialized = 2;
}
static void
gfc_handle_module_path_options (const char *arg)
{
if (gfc_option.module_dir != NULL)
{
gfc_status ("gfortran: Only one -M option allowed\n");
exit (3);
}
if (arg == NULL)
{
gfc_status ("gfortran: Directory required after -M\n");
exit (3);
}
gfc_option.module_dir = (char *) gfc_getmem (strlen (arg) + 2);
strcpy (gfc_option.module_dir, arg);
strcat (gfc_option.module_dir, "/");
gfc_add_include_path (gfc_option.module_dir);
}
static void
gfc_handle_fpe_trap_option (const char *arg)
{
int result, pos = 0, n;
static const char * const exception[] = { "invalid", "denormal", "zero",
"overflow", "underflow",
"precision", NULL };
static const int opt_exception[] = { GFC_FPE_INVALID, GFC_FPE_DENORMAL,
GFC_FPE_ZERO, GFC_FPE_OVERFLOW,
GFC_FPE_UNDERFLOW, GFC_FPE_PRECISION,
0 };
while (*arg)
{
while (*arg == ',')
arg++;
while (arg[pos] && arg[pos] != ',')
pos++;
result = 0;
for (n = 0; exception[n] != NULL; n++)
{
if (exception[n] && strncmp (exception[n], arg, pos) == 0)
{
gfc_option.fpe |= opt_exception[n];
arg += pos;
pos = 0;
result = 1;
break;
}
}
if (! result)
gfc_fatal_error ("Argument to -ffpe-trap is not valid: %s", arg);
}
}
int
gfc_handle_option (size_t scode, const char *arg, int value)
{
int result = 1;
enum opt_code code = (enum opt_code) scode;
if (code == N_OPTS)
return 1;
switch (code)
{
default:
result = 0;
break;
case OPT_Wall:
set_Wall (value);
break;
case OPT_Waliasing:
gfc_option.warn_aliasing = value;
break;
case OPT_Wampersand:
gfc_option.warn_ampersand = value;
break;
case OPT_Wcharacter_truncation:
gfc_option.warn_character_truncation = value;
break;
case OPT_Wconversion:
gfc_option.warn_conversion = value;
break;
case OPT_Wimplicit_interface:
gfc_option.warn_implicit_interface = value;
break;
case OPT_Wline_truncation:
gfc_option.warn_line_truncation = value;
break;
case OPT_Wsurprising:
gfc_option.warn_surprising = value;
break;
case OPT_Wtabs:
gfc_option.warn_tabs = value;
break;
case OPT_Wunderflow:
gfc_option.warn_underflow = value;
break;
case OPT_fall_intrinsics:
gfc_option.flag_all_intrinsics = 1;
break;
case OPT_fautomatic:
gfc_option.flag_automatic = value;
break;
case OPT_fbackslash:
gfc_option.flag_backslash = value;
break;
case OPT_fcray_pointer:
gfc_option.flag_cray_pointer = value;
break;
case OPT_ff2c:
gfc_option.flag_f2c = value;
break;
case OPT_fdollar_ok:
gfc_option.flag_dollar_ok = value;
break;
case OPT_fd_lines_as_code:
gfc_option.flag_d_lines = 1;
break;
case OPT_fd_lines_as_comments:
gfc_option.flag_d_lines = 0;
break;
case OPT_fdump_parse_tree:
gfc_option.verbose = value;
break;
case OPT_ffixed_form:
gfc_option.source_form = FORM_FIXED;
break;
case OPT_ffixed_line_length_none:
gfc_option.fixed_line_length = 0;
break;
case OPT_ffixed_line_length_:
if (value != 0 && value < 7)
gfc_fatal_error ("Fixed line length must be at least seven.");
gfc_option.fixed_line_length = value;
break;
case OPT_ffree_form:
gfc_option.source_form = FORM_FREE;
break;
case OPT_fopenmp:
gfc_option.flag_openmp = value;
break;
case OPT_ffree_line_length_none:
gfc_option.free_line_length = 0;
break;
case OPT_ffree_line_length_:
gfc_option.free_line_length = value;
break;
case OPT_funderscoring:
gfc_option.flag_underscoring = value;
break;
case OPT_fsecond_underscore:
gfc_option.flag_second_underscore = value;
break;
case OPT_fimplicit_none:
gfc_option.flag_implicit_none = value;
break;
case OPT_fmax_errors_:
gfc_option.max_errors = value;
break;
case OPT_fmax_stack_var_size_:
gfc_option.flag_max_stack_var_size = value;
break;
case OPT_fno_backend:
gfc_option.flag_no_backend = value;
break;
case OPT_frange_check:
gfc_option.flag_range_check = value;
break;
case OPT_fpack_derived:
gfc_option.flag_pack_derived = value;
break;
case OPT_frepack_arrays:
gfc_option.flag_repack_arrays = value;
break;
case OPT_fpreprocessed:
gfc_option.flag_preprocessed = value;
break;
case OPT_fmax_identifier_length_:
if (value > GFC_MAX_SYMBOL_LEN)
gfc_fatal_error ("Maximum supported identifier length is %d",
GFC_MAX_SYMBOL_LEN);
gfc_option.max_identifier_length = value;
break;
case OPT_fdefault_integer_8:
gfc_option.flag_default_integer = value;
break;
case OPT_fdefault_real_8:
gfc_option.flag_default_real = value;
break;
case OPT_fdefault_double_8:
gfc_option.flag_default_double = value;
break;
case OPT_I:
gfc_add_include_path (arg);
break;
case OPT_J:
case OPT_M:
gfc_handle_module_path_options (arg);
break;
case OPT_ffpe_trap_:
gfc_handle_fpe_trap_option (arg);
break;
case OPT_std_f95:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F95 | GFC_STD_F77;
gfc_option.warn_std = GFC_STD_F95_OBS;
gfc_option.max_identifier_length = 31;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_f2003:
gfc_option.allow_std = GFC_STD_F95_OBS | GFC_STD_F77
| GFC_STD_F2003 | GFC_STD_F95;
gfc_option.warn_std = GFC_STD_F95_OBS;
gfc_option.max_continue_fixed = 255;
gfc_option.max_continue_free = 255;
gfc_option.max_identifier_length = 63;
gfc_option.warn_ampersand = 1;
gfc_option.warn_tabs = 0;
break;
case OPT_std_gnu:
set_default_std_flags ();
break;
case OPT_std_legacy:
set_default_std_flags ();
gfc_option.warn_std = 0;
break;
case OPT_Wnonstd_intrinsics:
gfc_option.warn_nonstd_intrinsics = value;
break;
case OPT_fshort_enums:
gfc_option.fshort_enums = 1;
break;
case OPT_fconvert_little_endian:
gfc_option.convert = CONVERT_LITTLE;
break;
case OPT_fconvert_big_endian:
gfc_option.convert = CONVERT_BIG;
break;
case OPT_fconvert_native:
gfc_option.convert = CONVERT_NATIVE;
break;
case OPT_fconvert_swap:
gfc_option.convert = CONVERT_SWAP;
break;
case OPT_frecord_marker_4:
gfc_option.record_marker = 4;
break;
case OPT_frecord_marker_8:
gfc_option.record_marker = 8;
break;
case OPT_fmax_subrecord_length_:
if (value > MAX_SUBRECORD_LENGTH)
gfc_fatal_error ("Maximum subrecord length cannot exceed %d", MAX_SUBRECORD_LENGTH);
gfc_option.max_subrecord_length = value;
}
return result;
}