}
-/* Used by match_varspec() to extend the reference list by one
+/* Used by gfc_match_varspec() to extend the reference list by one
element. */
static gfc_ref *
/* Match any additional specifications associated with the current
variable like member references or substrings. If equiv_flag is
set we only match stuff that is allowed inside an EQUIVALENCE
- statement. */
+ statement. sub_flag tells whether we expect a type-bound procedure found
+ to be a subroutine as part of CALL or a FUNCTION. */
-static match
-match_varspec (gfc_expr *primary, int equiv_flag)
+match
+gfc_match_varspec (gfc_expr *primary, int equiv_flag, bool sub_flag)
{
char name[GFC_MAX_SYMBOL_LEN + 1];
gfc_ref *substring, *tail;
if (equiv_flag)
return MATCH_YES;
+ if (sym->ts.type == BT_UNKNOWN && gfc_peek_ascii_char () == '%'
+ && gfc_get_default_type (sym, sym->ns)->type == BT_DERIVED)
+ gfc_set_default_type (sym, 0, sym->ns);
+
if (sym->ts.type != BT_DERIVED || gfc_match_char ('%') != MATCH_YES)
goto check_substring;
for (;;)
{
+ gfc_try t;
+ gfc_symtree *tbp;
+
m = gfc_match_name (name);
if (m == MATCH_NO)
gfc_error ("Expected structure component name at %C");
if (m != MATCH_YES)
return MATCH_ERROR;
- component = gfc_find_component (sym, name);
+ tbp = gfc_find_typebound_proc (sym, &t, name, false);
+ if (tbp)
+ {
+ gfc_symbol* tbp_sym;
+
+ if (t == FAILURE)
+ return MATCH_ERROR;
+
+ gcc_assert (!tail || !tail->next);
+ gcc_assert (primary->expr_type == EXPR_VARIABLE);
+
+ if (tbp->typebound->is_generic)
+ tbp_sym = NULL;
+ else
+ tbp_sym = tbp->typebound->u.specific->n.sym;
+
+ primary->expr_type = EXPR_COMPCALL;
+ primary->value.compcall.tbp = tbp->typebound;
+ primary->value.compcall.name = tbp->name;
+ gcc_assert (primary->symtree->n.sym->attr.referenced);
+ if (tbp_sym)
+ primary->ts = tbp_sym->ts;
+
+ m = gfc_match_actual_arglist (tbp->typebound->subroutine,
+ &primary->value.compcall.actual);
+ if (m == MATCH_ERROR)
+ return MATCH_ERROR;
+ if (m == MATCH_NO)
+ {
+ if (sub_flag)
+ primary->value.compcall.actual = NULL;
+ else
+ {
+ gfc_error ("Expected argument list at %C");
+ return MATCH_ERROR;
+ }
+ }
+
+ gfc_set_sym_referenced (tbp->n.sym);
+
+ break;
+ }
+
+ component = gfc_find_component (sym, name, false, false);
if (component == NULL)
return MATCH_ERROR;
case MATCH_NO:
if (unknown)
- gfc_clear_ts (&primary->ts);
+ {
+ gfc_clear_ts (&primary->ts);
+ gfc_clear_ts (&sym->ts);
+ }
break;
case MATCH_ERROR:
break;
case REF_COMPONENT:
- gfc_get_component_attr (&attr, ref->u.c.component);
+ attr = ref->u.c.component->attr;
if (ts != NULL)
{
*ts = ref->u.c.component->ts;
ts->cl = NULL;
}
- pointer = ref->u.c.component->pointer;
- allocatable = ref->u.c.component->allocatable;
+ pointer = ref->u.c.component->attr.pointer;
+ allocatable = ref->u.c.component->attr.allocatable;
if (pointer)
target = 1;
gfc_free_expr (comp->val);
}
-match
-gfc_match_structure_constructor (gfc_symbol *sym, gfc_expr **result)
+
+/* Translate the component list into the actual constructor by sorting it in
+ the order required; this also checks along the way that each and every
+ component actually has an initializer and handles default initializers
+ for components without explicit value given. */
+static gfc_try
+build_actual_constructor (gfc_structure_ctor_component **comp_head,
+ gfc_constructor **ctor_head, gfc_symbol *sym)
{
- gfc_structure_ctor_component *comp_head, *comp_tail;
gfc_structure_ctor_component *comp_iter;
+ gfc_constructor *ctor_tail = NULL;
+ gfc_component *comp;
+
+ for (comp = sym->components; comp; comp = comp->next)
+ {
+ gfc_structure_ctor_component **next_ptr;
+ gfc_expr *value = NULL;
+
+ /* Try to find the initializer for the current component by name. */
+ next_ptr = comp_head;
+ for (comp_iter = *comp_head; comp_iter; comp_iter = comp_iter->next)
+ {
+ if (!strcmp (comp_iter->name, comp->name))
+ break;
+ next_ptr = &comp_iter->next;
+ }
+
+ /* If an extension, try building the parent derived type by building
+ a value expression for the parent derived type and calling self. */
+ if (!comp_iter && comp == sym->components && sym->attr.extension)
+ {
+ value = gfc_get_expr ();
+ value->expr_type = EXPR_STRUCTURE;
+ value->value.constructor = NULL;
+ value->ts = comp->ts;
+ value->where = gfc_current_locus;
+
+ if (build_actual_constructor (comp_head, &value->value.constructor,
+ comp->ts.derived) == FAILURE)
+ {
+ gfc_free_expr (value);
+ return FAILURE;
+ }
+ *ctor_head = ctor_tail = gfc_get_constructor ();
+ ctor_tail->expr = value;
+ continue;
+ }
+
+ /* If it was not found, try the default initializer if there's any;
+ otherwise, it's an error. */
+ if (!comp_iter)
+ {
+ if (comp->initializer)
+ {
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Structure"
+ " constructor with missing optional arguments"
+ " at %C") == FAILURE)
+ return FAILURE;
+ value = gfc_copy_expr (comp->initializer);
+ }
+ else
+ {
+ gfc_error ("No initializer for component '%s' given in the"
+ " structure constructor at %C!", comp->name);
+ return FAILURE;
+ }
+ }
+ else
+ value = comp_iter->val;
+
+ /* Add the value to the constructor chain built. */
+ if (ctor_tail)
+ {
+ ctor_tail->next = gfc_get_constructor ();
+ ctor_tail = ctor_tail->next;
+ }
+ else
+ *ctor_head = ctor_tail = gfc_get_constructor ();
+ gcc_assert (value);
+ ctor_tail->expr = value;
+
+ /* Remove the entry from the component list. We don't want the expression
+ value to be free'd, so set it to NULL. */
+ if (comp_iter)
+ {
+ *next_ptr = comp_iter->next;
+ comp_iter->val = NULL;
+ gfc_free_structure_ctor_component (comp_iter);
+ }
+ }
+ return SUCCESS;
+}
+
+match
+gfc_match_structure_constructor (gfc_symbol *sym, gfc_expr **result,
+ bool parent)
+{
+ gfc_structure_ctor_component *comp_tail, *comp_head, *comp_iter;
gfc_constructor *ctor_head, *ctor_tail;
gfc_component *comp; /* Is set NULL when named component is first seen */
gfc_expr *e;
match m;
const char* last_name = NULL;
- comp_head = comp_tail = NULL;
+ comp_tail = comp_head = NULL;
ctor_head = ctor_tail = NULL;
- if (gfc_match_char ('(') != MATCH_YES)
+ if (!parent && gfc_match_char ('(') != MATCH_YES)
goto syntax;
where = gfc_current_locus;
- gfc_find_component (sym, NULL);
+ gfc_find_component (sym, NULL, false, true);
+
+ /* Check that we're not about to construct an ABSTRACT type. */
+ if (!parent && sym->attr.abstract)
+ {
+ gfc_error ("Can't construct ABSTRACT type '%s' at %C", sym->name);
+ return MATCH_ERROR;
+ }
/* Match the component list and store it in a list together with the
corresponding component names. Check for empty argument list first. */
if (last_name)
gfc_error ("Component initializer without name after"
" component named %s at %C!", last_name);
- else
+ else if (!parent)
gfc_error ("Too many components in structure constructor at"
" %C!");
goto cleanup;
strncpy (comp_tail->name, comp->name, GFC_MAX_SYMBOL_LEN + 1);
}
- /* Find the current component in the structure definition; this is
- needed to get its access attribute in the private check below. */
+ /* Find the current component in the structure definition and check
+ its access is not private. */
if (comp)
- this_comp = comp;
+ this_comp = gfc_find_component (sym, comp->name, false, false);
else
{
- for (comp = sym->components; comp; comp = comp->next)
- if (!strcmp (comp->name, comp_tail->name))
- {
- this_comp = comp;
- break;
- }
+ this_comp = gfc_find_component (sym,
+ (const char *)comp_tail->name,
+ false, false);
comp = NULL; /* Reset needed! */
-
- /* Here we can check if a component name is given which does not
- correspond to any component of the defined structure. */
- if (!this_comp)
- {
- gfc_error ("Component '%s' in structure constructor at %C"
- " does not correspond to any component in the"
- " constructed structure!", comp_tail->name);
- goto cleanup;
- }
}
- gcc_assert (this_comp);
- /* Check the current component's access status. */
- if (sym->attr.use_assoc && this_comp->access == ACCESS_PRIVATE)
- {
- gfc_error ("Component '%s' is PRIVATE in structure constructor"
- " at %C!", comp_tail->name);
- goto cleanup;
- }
+ /* Here we can check if a component name is given which does not
+ correspond to any component of the defined structure. */
+ if (!this_comp)
+ goto cleanup;
/* Check if this component is already given a value. */
for (comp_iter = comp_head; comp_iter != comp_tail;
if (m == MATCH_ERROR)
goto cleanup;
- if (comp)
- comp = comp->next;
- }
- while (gfc_match_char (',') == MATCH_YES);
+ /* If not explicitly a parent constructor, gather up the components
+ and build one. */
+ if (comp && comp == sym->components
+ && sym->attr.extension
+ && (comp_tail->val->ts.type != BT_DERIVED
+ ||
+ comp_tail->val->ts.derived != this_comp->ts.derived))
+ {
+ gfc_current_locus = where;
+ gfc_free_expr (comp_tail->val);
+ comp_tail->val = NULL;
- if (gfc_match_char (')') != MATCH_YES)
- goto syntax;
-
- /* If there were components given and all components are private, error
- out at this place. */
- if (sym->attr.use_assoc && sym->component_access == ACCESS_PRIVATE)
- {
- gfc_error ("All components of '%s' are PRIVATE in structure"
- " constructor at %C", sym->name);
- goto cleanup;
- }
- }
+ m = gfc_match_structure_constructor (comp->ts.derived,
+ &comp_tail->val, true);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ }
- /* Translate the component list into the actual constructor by sorting it in
- the order required; this also checks along the way that each and every
- component actually has an initializer and handles default initializers
- for components without explicit value given. */
- for (comp = sym->components; comp; comp = comp->next)
- {
- gfc_structure_ctor_component **next_ptr;
- gfc_expr *value = NULL;
+ if (comp)
+ comp = comp->next;
- /* Try to find the initializer for the current component by name. */
- next_ptr = &comp_head;
- for (comp_iter = comp_head; comp_iter; comp_iter = comp_iter->next)
- {
- if (!strcmp (comp_iter->name, comp->name))
+ if (parent && !comp)
break;
- next_ptr = &comp_iter->next;
- }
-
- /* If it was not found, try the default initializer if there's any;
- otherwise, it's an error. */
- if (!comp_iter)
- {
- if (comp->initializer)
- {
- if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Structure"
- " constructor with missing optional arguments"
- " at %C") == FAILURE)
- goto cleanup;
- value = gfc_copy_expr (comp->initializer);
- }
- else
- {
- gfc_error ("No initializer for component '%s' given in the"
- " structure constructor at %C!", comp->name);
- goto cleanup;
- }
}
- else
- value = comp_iter->val;
- /* Add the value to the constructor chain built. */
- if (ctor_tail)
- {
- ctor_tail->next = gfc_get_constructor ();
- ctor_tail = ctor_tail->next;
- }
- else
- ctor_head = ctor_tail = gfc_get_constructor ();
- gcc_assert (value);
- ctor_tail->expr = value;
+ while (gfc_match_char (',') == MATCH_YES);
- /* Remove the entry from the component list. We don't want the expression
- value to be free'd, so set it to NULL. */
- if (comp_iter)
- {
- *next_ptr = comp_iter->next;
- comp_iter->val = NULL;
- gfc_free_structure_ctor_component (comp_iter);
- }
+ if (!parent && gfc_match_char (')') != MATCH_YES)
+ goto syntax;
}
+ if (build_actual_constructor (&comp_head, &ctor_head, sym) == FAILURE)
+ goto cleanup;
+
/* No component should be left, as this should have caused an error in the
loop constructing the component-list (name that does not correspond to any
component in the structure definition). */
- gcc_assert (!comp_head);
+ if (comp_head && sym->attr.extension)
+ {
+ for (comp_iter = comp_head; comp_iter; comp_iter = comp_iter->next)
+ {
+ gfc_error ("component '%s' at %L has already been set by a "
+ "parent derived type constructor", comp_iter->name,
+ &comp_iter->where);
+ }
+ goto cleanup;
+ }
+ else
+ gcc_assert (!comp_head);
e = gfc_get_expr ();
}
}
+ if (gfc_matching_procptr_assignment)
+ goto procptr0;
+
if (sym->attr.function || sym->attr.external || sym->attr.intrinsic)
goto function0;
{
case FL_VARIABLE:
variable:
- if (sym->ts.type == BT_UNKNOWN && gfc_peek_ascii_char () == '%'
- && gfc_get_default_type (sym, sym->ns)->type == BT_DERIVED)
- gfc_set_default_type (sym, 0, sym->ns);
-
e = gfc_get_expr ();
e->expr_type = EXPR_VARIABLE;
e->symtree = symtree;
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
break;
case FL_PARAMETER:
}
e->symtree = symtree;
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
if (sym->ts.is_c_interop || sym->ts.is_iso_c)
break;
if (sym == NULL)
m = MATCH_ERROR;
else
- m = gfc_match_structure_constructor (sym, &e);
+ m = gfc_match_structure_constructor (sym, &e, false);
break;
/* If we're here, then the name is known to be the name of a
procedure, yet it is not sure to be the name of a function. */
case FL_PROCEDURE:
+
+ /* Procedure Pointer Assignments. */
+ procptr0:
+ if (gfc_matching_procptr_assignment)
+ {
+ gfc_gobble_whitespace ();
+ if (sym->attr.function && gfc_peek_ascii_char () == '(')
+ /* Parse functions returning a procptr. */
+ goto function0;
+
+ if (sym->attr.flavor == FL_UNKNOWN) sym->attr.flavor = FL_PROCEDURE;
+ if (gfc_is_intrinsic (sym, 0, gfc_current_locus)
+ || gfc_is_intrinsic (sym, 1, gfc_current_locus))
+ sym->attr.intrinsic = 1;
+ e = gfc_get_expr ();
+ e->expr_type = EXPR_VARIABLE;
+ e->symtree = symtree;
+ m = gfc_match_varspec (e, 0, false);
+ break;
+ }
+
if (sym->attr.subroutine)
{
gfc_error ("Unexpected use of subroutine name '%s' at %C",
e->symtree = symtree;
e->expr_type = EXPR_VARIABLE;
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
break;
}
e = gfc_get_expr ();
e->symtree = symtree;
e->expr_type = EXPR_VARIABLE;
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
break;
}
break;
}
- /*FIXME:??? match_varspec does set this for us: */
+ /*FIXME:??? gfc_match_varspec does set this for us: */
e->ts = sym->ts;
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
break;
}
/* If our new function returns a character, array or structure
type, it might have subsequent references. */
- m = match_varspec (e, 0);
+ m = gfc_match_varspec (e, 0, false);
if (m == MATCH_NO)
m = MATCH_YES;
}
-/* Match a variable, ie something that can be assigned to. This
+/* Match a variable, i.e. something that can be assigned to. This
starts as a symbol, can be a structure component or an array
reference. It can be a function if the function doesn't have a
separate RESULT variable. If the symbol has not been previously
we force the changed_symbols mechanism to work by setting
host_flag to 0. This prevents valid symbols that have the name
of keywords, such as 'end', being turned into variables by
- failed matching to assignments for, eg., END INTERFACE. */
+ failed matching to assignments for, e.g., END INTERFACE. */
if (gfc_current_state () == COMP_MODULE
|| gfc_current_state () == COMP_INTERFACE
|| gfc_current_state () == COMP_CONTAINS)
switch (sym->attr.flavor)
{
case FL_VARIABLE:
- if (sym->attr.protected && sym->attr.use_assoc)
+ if (sym->attr.is_protected && sym->attr.use_assoc)
{
gfc_error ("Assigning to PROTECTED variable at %C");
return MATCH_ERROR;
break;
}
+ if (sym->attr.proc_pointer)
+ break;
+
/* Fall through to error */
default:
expr->where = where;
/* Now see if we have to do more. */
- m = match_varspec (expr, equiv_flag);
+ m = gfc_match_varspec (expr, equiv_flag, false);
if (m != MATCH_YES)
{
gfc_free_expr (expr);
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