/* Array things
- Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008
+ Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008, 2009, 2010
Free Software Foundation, Inc.
Contributed by Andy Vaught
if (as == NULL)
return;
- for (i = 0; i < as->rank; i++)
+ for (i = 0; i < as->rank + as->corank; i++)
{
gfc_free_expr (as->lower[i]);
gfc_free_expr (as->upper[i]);
if (as == NULL)
return SUCCESS;
- for (i = 0; i < as->rank; i++)
+ for (i = 0; i < as->rank + as->corank; i++)
{
e = as->lower[i];
if (resolve_array_bound (e, check_constant) == FAILURE)
gfc_expr **upper, **lower;
match m;
- lower = &as->lower[as->rank - 1];
- upper = &as->upper[as->rank - 1];
+ lower = &as->lower[as->rank + as->corank - 1];
+ upper = &as->upper[as->rank + as->corank - 1];
if (gfc_match_char ('*') == MATCH_YES)
{
/* Matches an array specification, incidentally figuring out what sort
- it is. */
+ it is. Match either a normal array specification, or a coarray spec
+ or both. Optionally allow [:] for coarrays. */
match
-gfc_match_array_spec (gfc_array_spec **asp)
+gfc_match_array_spec (gfc_array_spec **asp, bool match_dim, bool match_codim)
{
array_type current_type;
gfc_array_spec *as;
int i;
-
- if (gfc_match_char ('(') != MATCH_YES)
- {
- *asp = NULL;
- return MATCH_NO;
- }
-
+
as = gfc_get_array_spec ();
+ as->corank = 0;
+ as->rank = 0;
for (i = 0; i < GFC_MAX_DIMENSIONS; i++)
{
as->upper[i] = NULL;
}
- as->rank = 1;
+ if (!match_dim)
+ goto coarray;
+
+ if (gfc_match_char ('(') != MATCH_YES)
+ {
+ if (!match_codim)
+ goto done;
+ goto coarray;
+ }
for (;;)
{
+ as->rank++;
current_type = match_array_element_spec (as);
if (as->rank == 1)
goto cleanup;
}
- if (as->rank >= GFC_MAX_DIMENSIONS)
+ if (as->rank + as->corank >= GFC_MAX_DIMENSIONS)
{
gfc_error ("Array specification at %C has more than %d dimensions",
GFC_MAX_DIMENSIONS);
goto cleanup;
}
- if (as->rank >= 7
+ if (as->corank + as->rank >= 7
&& gfc_notify_std (GFC_STD_F2008, "Fortran 2008: Array "
"specification at %C with more than 7 dimensions")
== FAILURE)
goto cleanup;
+ }
- as->rank++;
+ if (!match_codim)
+ goto done;
+
+coarray:
+ if (gfc_match_char ('[') != MATCH_YES)
+ goto done;
+
+ if (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: Coarray declaration at %C")
+ == FAILURE)
+ goto cleanup;
+
+ if (gfc_option.coarray == GFC_FCOARRAY_NONE)
+ {
+ gfc_error ("Coarrays disabled at %C, use -fcoarray= to enable");
+ goto cleanup;
+ }
+
+ for (;;)
+ {
+ as->corank++;
+ current_type = match_array_element_spec (as);
+
+ if (current_type == AS_UNKNOWN)
+ goto cleanup;
+
+ if (as->corank == 1)
+ as->cotype = current_type;
+ else
+ switch (as->cotype)
+ { /* See how current spec meshes with the existing. */
+ case AS_UNKNOWN:
+ goto cleanup;
+
+ case AS_EXPLICIT:
+ if (current_type == AS_ASSUMED_SIZE)
+ {
+ as->cotype = AS_ASSUMED_SIZE;
+ break;
+ }
+
+ if (current_type == AS_EXPLICIT)
+ break;
+
+ gfc_error ("Bad array specification for an explicitly "
+ "shaped array at %C");
+
+ goto cleanup;
+
+ case AS_ASSUMED_SHAPE:
+ if ((current_type == AS_ASSUMED_SHAPE)
+ || (current_type == AS_DEFERRED))
+ break;
+
+ gfc_error ("Bad array specification for assumed shape "
+ "array at %C");
+ goto cleanup;
+
+ case AS_DEFERRED:
+ if (current_type == AS_DEFERRED)
+ break;
+
+ if (current_type == AS_ASSUMED_SHAPE)
+ {
+ as->cotype = AS_ASSUMED_SHAPE;
+ break;
+ }
+
+ gfc_error ("Bad specification for deferred shape array at %C");
+ goto cleanup;
+
+ case AS_ASSUMED_SIZE:
+ gfc_error ("Bad specification for assumed size array at %C");
+ goto cleanup;
+ }
+
+ if (gfc_match_char (']') == MATCH_YES)
+ break;
+
+ if (gfc_match_char (',') != MATCH_YES)
+ {
+ gfc_error ("Expected another dimension in array declaration at %C");
+ goto cleanup;
+ }
+
+ if (as->corank >= GFC_MAX_DIMENSIONS)
+ {
+ gfc_error ("Array specification at %C has more than %d "
+ "dimensions", GFC_MAX_DIMENSIONS);
+ goto cleanup;
+ }
+ }
+
+ if (current_type == AS_EXPLICIT)
+ {
+ gfc_error ("Upper bound of last coarray dimension must be '*' at %C");
+ goto cleanup;
+ }
+
+ if (as->cotype == AS_ASSUMED_SIZE)
+ as->cotype = AS_EXPLICIT;
+
+ if (as->rank == 0)
+ as->type = as->cotype;
+
+done:
+ if (as->rank == 0 && as->corank == 0)
+ {
+ *asp = NULL;
+ gfc_free_array_spec (as);
+ return MATCH_NO;
}
/* If a lower bounds of an assumed shape array is blank, put in one. */
if (as->type == AS_ASSUMED_SHAPE)
{
- for (i = 0; i < as->rank; i++)
+ for (i = 0; i < as->rank + as->corank; i++)
{
if (as->lower[i] == NULL)
as->lower[i] = gfc_int_expr (1);
}
}
+
*asp = as;
+
return MATCH_YES;
cleanup:
gfc_try
gfc_set_array_spec (gfc_symbol *sym, gfc_array_spec *as, locus *error_loc)
{
+ int i;
+
if (as == NULL)
return SUCCESS;
- if (gfc_add_dimension (&sym->attr, sym->name, error_loc) == FAILURE)
+ if (as->rank
+ && gfc_add_dimension (&sym->attr, sym->name, error_loc) == FAILURE)
+ return FAILURE;
+
+ if (as->corank
+ && gfc_add_codimension (&sym->attr, sym->name, error_loc) == FAILURE)
return FAILURE;
- sym->as = as;
+ if (sym->as == NULL)
+ {
+ sym->as = as;
+ return SUCCESS;
+ }
+
+ if (as->corank)
+ {
+ /* The "sym" has no corank (checked via gfc_add_codimension). Thus
+ the codimension is simply added. */
+ gcc_assert (as->rank == 0 && sym->as->corank == 0);
+
+ sym->as->cotype = as->cotype;
+ sym->as->corank = as->corank;
+ for (i = 0; i < as->corank; i++)
+ {
+ sym->as->lower[sym->as->rank + i] = as->lower[i];
+ sym->as->upper[sym->as->rank + i] = as->upper[i];
+ }
+ }
+ else
+ {
+ /* The "sym" has no rank (checked via gfc_add_dimension). Thus
+ the dimension is added - but first the codimensions (if existing
+ need to be shifted to make space for the dimension. */
+ gcc_assert (as->corank == 0 && sym->as->rank == 0);
+
+ sym->as->rank = as->rank;
+ sym->as->type = as->type;
+ sym->as->cray_pointee = as->cray_pointee;
+ sym->as->cp_was_assumed = as->cp_was_assumed;
+
+ for (i = 0; i < sym->as->corank; i++)
+ {
+ sym->as->lower[as->rank + i] = sym->as->lower[i];
+ sym->as->upper[as->rank + i] = sym->as->upper[i];
+ }
+ for (i = 0; i < as->rank; i++)
+ {
+ sym->as->lower[i] = as->lower[i];
+ sym->as->upper[i] = as->upper[i];
+ }
+ }
+ gfc_free (as);
return SUCCESS;
}
*dest = *src;
- for (i = 0; i < dest->rank; i++)
+ for (i = 0; i < dest->rank + dest->corank; i++)
{
dest->lower[i] = gfc_copy_expr (dest->lower[i]);
dest->upper[i] = gfc_copy_expr (dest->upper[i]);
if (as1->rank != as2->rank)
return 0;
+ if (as1->corank != as2->corank)
+ return 0;
+
if (as1->rank == 0)
return 1;
return 0;
if (as1->type == AS_EXPLICIT)
- for (i = 0; i < as1->rank; i++)
+ for (i = 0; i < as1->rank + as1->corank; i++)
{
if (compare_bounds (as1->lower[i], as2->lower[i]) == 0)
return 0;
static gfc_try
extract_element (gfc_expr *e)
{
-
if (e->rank != 0)
{ /* Something unextractable */
gfc_free_expr (e);
gfc_free_expr (e);
current_expand.extract_count++;
+
return SUCCESS;
}
FAILURE if not so. */
static gfc_try
-constant_element (gfc_expr *e)
+is_constant_element (gfc_expr *e)
{
int rv;
{
expand_info expand_save;
gfc_try rc;
+ gfc_constructor * con;
+
+ rc = SUCCESS;
- iter_stack = NULL;
- expand_save = current_expand;
- current_expand.expand_work_function = constant_element;
+ if (e->value.constructor
+ && e->value.constructor->expr->expr_type == EXPR_ARRAY)
+ {
+ /* Expand the constructor. */
+ iter_stack = NULL;
+ expand_save = current_expand;
+ current_expand.expand_work_function = is_constant_element;
- rc = expand_constructor (e->value.constructor);
+ rc = expand_constructor (e->value.constructor);
+
+ current_expand = expand_save;
+ }
+ else
+ {
+ /* No need to expand this further. */
+ for (con = e->value.constructor; con; con = con->next)
+ {
+ if (con->expr->expr_type == EXPR_CONSTANT)
+ continue;
+ else
+ {
+ if (!gfc_is_constant_expr (con->expr))
+ rc = FAILURE;
+ }
+ }
+ }
- current_expand = expand_save;
if (rc == FAILURE)
return 0;
return SUCCESS;
}
- if (spec_dimen_size (array->symtree->n.sym->as, dimen, result) == FAILURE)
+ if (array->symtree->n.sym->attr.generic
+ && array->value.function.esym != NULL)
+ {
+ if (spec_dimen_size (array->value.function.esym->as, dimen, result)
+ == FAILURE)
+ return FAILURE;
+ }
+ else if (spec_dimen_size (array->symtree->n.sym->as, dimen, result)
+ == FAILURE)
return FAILURE;
break;
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