/* Primary expression subroutines
- Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007
+ Copyright (C) 2000, 2001, 2002, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
Contributed by Andy Vaught
#include "arith.h"
#include "match.h"
#include "parse.h"
+#include "toplev.h"
/* Matches a kind-parameter expression, which is either a named
symbolic constant or a nonnegative integer constant. If
if (p != NULL)
return MATCH_NO;
+ gfc_set_sym_referenced (sym);
+
if (*kind < 0)
return MATCH_NO;
/* Given a character and a radix, see if the character is a valid
digit in that radix. */
-static int
-check_digit (int c, int radix)
+int
+gfc_check_digit (char c, int radix)
{
int r;
break;
default:
- gfc_internal_error ("check_digit(): bad radix");
+ gfc_internal_error ("gfc_check_digit(): bad radix");
}
return r;
match_digits (int signflag, int radix, char *buffer)
{
locus old_loc;
- int length, c;
+ int length;
+ char c;
length = 0;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (signflag && (c == '+' || c == '-'))
{
if (buffer != NULL)
*buffer++ = c;
gfc_gobble_whitespace ();
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
length++;
}
- if (!check_digit (c, radix))
+ if (!gfc_check_digit (c, radix))
return -1;
length++;
for (;;)
{
old_loc = gfc_current_locus;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
- if (!check_digit (c, radix))
+ if (!gfc_check_digit (c, radix))
break;
if (buffer != NULL)
if (length == -1)
return MATCH_NO;
- buffer = alloca (length + 1);
+ buffer = (char *) alloca (length + 1);
memset (buffer, '\0', length + 1);
gfc_gobble_whitespace ();
e = gfc_constant_result (BT_HOLLERITH, gfc_default_character_kind,
&gfc_current_locus);
- e->representation.string = gfc_getmem (num + 1);
+ e->representation.string = XCNEWVEC (char, num + 1);
+
for (i = 0; i < num; i++)
{
- e->representation.string[i] = gfc_next_char_literal (1);
+ gfc_char_t c = gfc_next_char_literal (1);
+ if (! gfc_wide_fits_in_byte (c))
+ {
+ gfc_error ("Invalid Hollerith constant at %L contains a "
+ "wide character", &old_loc);
+ goto cleanup;
+ }
+
+ e->representation.string[i] = (unsigned char) c;
}
+
e->representation.string[num] = '\0';
e->representation.length = num;
static match
match_boz_constant (gfc_expr **result)
{
- int post, radix, delim, length, x_hex, kind;
+ int radix, length, x_hex, kind;
locus old_loc, start_loc;
- char *buffer;
+ char *buffer, post, delim;
gfc_expr *e;
start_loc = old_loc = gfc_current_locus;
gfc_gobble_whitespace ();
x_hex = 0;
- switch (post = gfc_next_char ())
+ switch (post = gfc_next_ascii_char ())
{
case 'b':
radix = 2;
/* No whitespace allowed here. */
if (post == 0)
- delim = gfc_next_char ();
+ delim = gfc_next_ascii_char ();
if (delim != '\'' && delim != '\"')
goto backup;
- if (x_hex && pedantic
+ if (x_hex
&& (gfc_notify_std (GFC_STD_GNU, "Extension: Hexadecimal "
- "constant at %C uses non-standard syntax.")
+ "constant at %C uses non-standard syntax")
== FAILURE))
return MATCH_ERROR;
return MATCH_ERROR;
}
- if (gfc_next_char () != delim)
+ if (gfc_next_ascii_char () != delim)
{
gfc_error ("Illegal character in BOZ constant at %C");
return MATCH_ERROR;
if (post == 1)
{
- switch (gfc_next_char ())
+ switch (gfc_next_ascii_char ())
{
case 'b':
radix = 2;
default:
goto backup;
}
- gfc_notify_std (GFC_STD_GNU, "Extension: BOZ constant "
- "at %C uses non-standard postfix syntax.");
+
+ if (gfc_notify_std (GFC_STD_GNU, "Extension: BOZ constant "
+ "at %C uses non-standard postfix syntax")
+ == FAILURE)
+ return MATCH_ERROR;
}
gfc_current_locus = old_loc;
- buffer = alloca (length + 1);
+ buffer = (char *) alloca (length + 1);
memset (buffer, '\0', length + 1);
match_digits (0, radix, buffer);
- gfc_next_char (); /* Eat delimiter. */
+ gfc_next_ascii_char (); /* Eat delimiter. */
if (post == 1)
- gfc_next_char (); /* Eat postfixed b, o, z, or x. */
+ gfc_next_ascii_char (); /* Eat postfixed b, o, z, or x. */
/* In section 5.2.5 and following C567 in the Fortran 2003 standard, we find
"If a data-stmt-constant is a boz-literal-constant, the corresponding
kind = gfc_max_integer_kind;
e = gfc_convert_integer (buffer, kind, radix, &gfc_current_locus);
+ /* Mark as boz variable. */
+ e->is_boz = 1;
+
if (gfc_range_check (e) != ARITH_OK)
{
gfc_error ("Integer too big for integer kind %i at %C", kind);
return MATCH_ERROR;
}
+ if (!gfc_in_match_data ()
+ && (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: BOZ used outside a DATA "
+ "statement at %C")
+ == FAILURE))
+ return MATCH_ERROR;
+
*result = e;
return MATCH_YES;
/* Match a real constant of some sort. Allow a signed constant if signflag
- is nonzero. Allow integer constants if allow_int is true. */
+ is nonzero. */
static match
match_real_constant (gfc_expr **result, int signflag)
{
- int kind, c, count, seen_dp, seen_digits, exp_char;
+ int kind, count, seen_dp, seen_digits;
locus old_loc, temp_loc;
- char *p, *buffer;
+ char *p, *buffer, c, exp_char;
gfc_expr *e;
bool negate;
exp_char = ' ';
negate = FALSE;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (signflag && (c == '+' || c == '-'))
{
if (c == '-')
negate = TRUE;
gfc_gobble_whitespace ();
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
}
/* Scan significand. */
- for (;; c = gfc_next_char (), count++)
+ for (;; c = gfc_next_ascii_char (), count++)
{
if (c == '.')
{
/* Check to see if "." goes with a following operator like
".eq.". */
temp_loc = gfc_current_locus;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (c == 'e' || c == 'd' || c == 'q')
{
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (c == '.')
goto done; /* Operator named .e. or .d. */
}
exp_char = c;
/* Scan exponent. */
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
count++;
if (c == '+' || c == '-')
{ /* optional sign */
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
count++;
}
while (ISDIGIT (c))
{
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
count++;
}
gfc_current_locus = old_loc;
gfc_gobble_whitespace ();
- buffer = alloca (count + 1);
+ buffer = (char *) alloca (count + 1);
memset (buffer, '\0', count + 1);
p = buffer;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (c == '+' || c == '-')
{
gfc_gobble_whitespace ();
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
}
/* Hack for mpfr_set_str(). */
if (--count == 0)
break;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
}
kind = get_kind ();
return doubled delimiters on the input as a single instance of
the delimiter.
- Special return values are:
+ Special return values for "ret" argument are:
-1 End of the string, as determined by the delimiter
-2 Unterminated string detected
Backslash codes are also expanded at this time. */
-static int
-next_string_char (char delimiter)
+static gfc_char_t
+next_string_char (gfc_char_t delimiter, int *ret)
{
locus old_locus;
- int c;
+ gfc_char_t c;
c = gfc_next_char_literal (1);
+ *ret = 0;
if (c == '\n')
- return -2;
+ {
+ *ret = -2;
+ return 0;
+ }
if (gfc_option.flag_backslash && c == '\\')
{
return c;
gfc_current_locus = old_locus;
- return -1;
+ *ret = -1;
+ return 0;
}
int len;
gfc_gobble_whitespace ();
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (!ISALPHA (c))
return MATCH_NO;
for (;;)
{
old_loc = gfc_current_locus;
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
if (c == '_')
{
- peek = gfc_peek_char ();
+ peek = gfc_peek_ascii_char ();
if (peek == '\'' || peek == '\"')
{
static match
match_string_constant (gfc_expr **result)
{
- char *p, name[GFC_MAX_SYMBOL_LEN + 1];
- int i, c, kind, length, delimiter, warn_ampersand;
+ char name[GFC_MAX_SYMBOL_LEN + 1], peek;
+ int i, kind, length, warn_ampersand, ret;
locus old_locus, start_locus;
gfc_symbol *sym;
gfc_expr *e;
const char *q;
match m;
+ gfc_char_t c, delimiter, *p;
old_locus = gfc_current_locus;
goto got_delim;
}
- if (ISDIGIT (c))
+ if (gfc_wide_is_digit (c))
{
kind = 0;
- while (ISDIGIT (c))
+ while (gfc_wide_is_digit (c))
{
kind = kind * 10 + c - '0';
if (kind > 9999999)
gfc_error (q);
return MATCH_ERROR;
}
+ gfc_set_sym_referenced (sym);
}
if (gfc_validate_kind (BT_CHARACTER, kind, true) < 0)
for (;;)
{
- c = next_string_char (delimiter);
- if (c == -1)
+ c = next_string_char (delimiter, &ret);
+ if (ret == -1)
break;
- if (c == -2)
+ if (ret == -2)
{
gfc_current_locus = start_locus;
gfc_error ("Unterminated character constant beginning at %C");
/* Peek at the next character to see if it is a b, o, z, or x for the
postfixed BOZ literal constants. */
- c = gfc_peek_char ();
- if (c == 'b' || c == 'o' || c =='z' || c == 'x')
+ peek = gfc_peek_ascii_char ();
+ if (peek == 'b' || peek == 'o' || peek =='z' || peek == 'x')
goto no_match;
e->ts.is_iso_c = 0;
e->where = start_locus;
- e->value.character.string = p = gfc_getmem (length + 1);
+ e->value.character.string = p = gfc_get_wide_string (length + 1);
e->value.character.length = length;
gfc_current_locus = start_locus;
gfc_option.warn_ampersand = 0;
for (i = 0; i < length; i++)
- *p++ = next_string_char (delimiter);
+ {
+ c = next_string_char (delimiter, &ret);
+
+ if (!gfc_check_character_range (c, kind))
+ {
+ gfc_error ("Character '%s' in string at %C is not representable "
+ "in character kind %d", gfc_print_wide_char (c), kind);
+ return MATCH_ERROR;
+ }
+
+ *p++ = c;
+ }
*p = '\0'; /* TODO: C-style string is for development/debug purposes. */
gfc_option.warn_ampersand = warn_ampersand;
- if (next_string_char (delimiter) != -1)
+ next_string_char (delimiter, &ret);
+ if (ret != -1)
gfc_internal_error ("match_string_constant(): Delimiter not found");
if (match_substring (NULL, 0, &e->ref) != MATCH_NO)
locus orig_loc = gfc_current_locus;
gfc_gobble_whitespace ();
- if (gfc_next_char () == '.')
+ if (gfc_next_ascii_char () == '.')
{
- int ch = gfc_next_char();
+ char ch = gfc_next_ascii_char ();
if (ch == 'f')
{
- if (gfc_next_char () == 'a'
- && gfc_next_char () == 'l'
- && gfc_next_char () == 's'
- && gfc_next_char () == 'e'
- && gfc_next_char () == '.')
+ if (gfc_next_ascii_char () == 'a'
+ && gfc_next_ascii_char () == 'l'
+ && gfc_next_ascii_char () == 's'
+ && gfc_next_ascii_char () == 'e'
+ && gfc_next_ascii_char () == '.')
/* Matched ".false.". */
return 0;
}
else if (ch == 't')
{
- if (gfc_next_char () == 'r'
- && gfc_next_char () == 'u'
- && gfc_next_char () == 'e'
- && gfc_next_char () == '.')
+ if (gfc_next_ascii_char () == 'r'
+ && gfc_next_ascii_char () == 'u'
+ && gfc_next_ascii_char () == 'e'
+ && gfc_next_ascii_char () == '.')
/* Matched ".true.". */
return 1;
}
{
/* Give the matcher for implied do-loops a chance to run. This
yields a much saner error message for (/ (i, 4=i, 6) /). */
- if (gfc_peek_char () == '=')
+ if (gfc_peek_ascii_char () == '=')
{
m = MATCH_ERROR;
goto cleanup;
gfc_symtree *symtree;
locus where, w;
gfc_expr *e;
- int c;
+ char c;
where = gfc_current_locus;
case MATCH_YES:
w = gfc_current_locus;
gfc_gobble_whitespace ();
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
gfc_current_locus = w;
if (c != ',' && c != ')')
gfc_component *component;
gfc_symbol *sym = primary->symtree->n.sym;
match m;
+ bool unknown;
tail = NULL;
- if ((equiv_flag && gfc_peek_char () == '(') || sym->attr.dimension)
+ gfc_gobble_whitespace ();
+ if ((equiv_flag && gfc_peek_ascii_char () == '(') || sym->attr.dimension)
{
/* In EQUIVALENCE, we don't know yet whether we are seeing
an array, character variable or array of character
if (m != MATCH_YES)
return m;
- if (equiv_flag && gfc_peek_char () == '(')
+ gfc_gobble_whitespace ();
+ if (equiv_flag && gfc_peek_ascii_char () == '(')
{
tail = extend_ref (primary, tail);
tail->type = REF_ARRAY;
}
check_substring:
+ unknown = false;
if (primary->ts.type == BT_UNKNOWN)
{
if (gfc_get_default_type (sym, sym->ns)->type == BT_CHARACTER)
{
gfc_set_default_type (sym, 0, sym->ns);
primary->ts = sym->ts;
+ unknown = true;
}
}
break;
case MATCH_NO:
+ if (unknown)
+ gfc_clear_ts (&primary->ts);
break;
case MATCH_ERROR:
/* Match a structure constructor. The initial symbol has already been
seen. */
+typedef struct gfc_structure_ctor_component
+{
+ char* name;
+ gfc_expr* val;
+ locus where;
+ struct gfc_structure_ctor_component* next;
+}
+gfc_structure_ctor_component;
+
+#define gfc_get_structure_ctor_component() XCNEW (gfc_structure_ctor_component)
+
+static void
+gfc_free_structure_ctor_component (gfc_structure_ctor_component *comp)
+{
+ gfc_free (comp->name);
+ gfc_free_expr (comp->val);
+}
+
match
gfc_match_structure_constructor (gfc_symbol *sym, gfc_expr **result)
{
- gfc_constructor *head, *tail;
- gfc_component *comp;
+ gfc_structure_ctor_component *comp_head, *comp_tail;
+ gfc_structure_ctor_component *comp_iter;
+ gfc_constructor *ctor_head, *ctor_tail;
+ gfc_component *comp; /* Is set NULL when named component is first seen */
gfc_expr *e;
locus where;
match m;
- bool private_comp = false;
+ const char* last_name = NULL;
- head = tail = NULL;
+ comp_head = comp_tail = NULL;
+ ctor_head = ctor_tail = NULL;
if (gfc_match_char ('(') != MATCH_YES)
goto syntax;
gfc_find_component (sym, NULL);
- for (comp = sym->components; comp; comp = comp->next)
+ /* Match the component list and store it in a list together with the
+ corresponding component names. Check for empty argument list first. */
+ if (gfc_match_char (')') != MATCH_YES)
{
- if (comp->access == ACCESS_PRIVATE)
- {
- private_comp = true;
- break;
- }
- if (head == NULL)
- tail = head = gfc_get_constructor ();
- else
+ comp = sym->components;
+ do
{
- tail->next = gfc_get_constructor ();
- tail = tail->next;
- }
+ gfc_component *this_comp = NULL;
- m = gfc_match_expr (&tail->expr);
- if (m == MATCH_NO)
- goto syntax;
- if (m == MATCH_ERROR)
- goto cleanup;
+ if (!comp_head)
+ comp_tail = comp_head = gfc_get_structure_ctor_component ();
+ else
+ {
+ comp_tail->next = gfc_get_structure_ctor_component ();
+ comp_tail = comp_tail->next;
+ }
+ comp_tail->name = XCNEWVEC (char, GFC_MAX_SYMBOL_LEN + 1);
+ comp_tail->val = NULL;
+ comp_tail->where = gfc_current_locus;
- if (gfc_match_char (',') == MATCH_YES)
- {
- if (comp->next == NULL)
+ /* Try matching a component name. */
+ if (gfc_match_name (comp_tail->name) == MATCH_YES
+ && gfc_match_char ('=') == MATCH_YES)
{
- gfc_error ("Too many components in structure constructor at %C");
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Structure"
+ " constructor with named arguments at %C")
+ == FAILURE)
+ goto cleanup;
+
+ last_name = comp_tail->name;
+ comp = NULL;
+ }
+ else
+ {
+ /* Components without name are not allowed after the first named
+ component initializer! */
+ if (!comp)
+ {
+ if (last_name)
+ gfc_error ("Component initializer without name after"
+ " component named %s at %C!", last_name);
+ else
+ gfc_error ("Too many components in structure constructor at"
+ " %C!");
+ goto cleanup;
+ }
+
+ gfc_current_locus = comp_tail->where;
+ 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. */
+ if (comp)
+ this_comp = comp;
+ else
+ {
+ for (comp = sym->components; comp; comp = comp->next)
+ if (!strcmp (comp->name, comp_tail->name))
+ {
+ this_comp = comp;
+ break;
+ }
+ 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;
}
- continue;
+ /* Check if this component is already given a value. */
+ for (comp_iter = comp_head; comp_iter != comp_tail;
+ comp_iter = comp_iter->next)
+ {
+ gcc_assert (comp_iter);
+ if (!strcmp (comp_iter->name, comp_tail->name))
+ {
+ gfc_error ("Component '%s' is initialized twice in the"
+ " structure constructor at %C!", comp_tail->name);
+ goto cleanup;
+ }
+ }
+
+ /* Match the current initializer expression. */
+ m = gfc_match_expr (&comp_tail->val);
+ if (m == MATCH_NO)
+ goto syntax;
+ if (m == MATCH_ERROR)
+ goto cleanup;
+
+ if (comp)
+ comp = comp->next;
}
+ while (gfc_match_char (',') == MATCH_YES);
- break;
+ 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;
+ }
}
- if (sym->attr.use_assoc
- && (sym->component_access == ACCESS_PRIVATE || private_comp))
+ /* 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_error ("Structure constructor for '%s' at %C has PRIVATE "
- "components", sym->name);
- goto cleanup;
- }
+ gfc_structure_ctor_component **next_ptr;
+ gfc_expr *value = NULL;
- if (gfc_match_char (')') != MATCH_YES)
- goto syntax;
+ /* 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 (comp && comp->next != NULL)
- {
- gfc_error ("Too few components in structure constructor at %C");
- goto cleanup;
+ /* 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;
+
+ /* 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);
+ }
}
+ /* 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);
+
e = gfc_get_expr ();
e->expr_type = EXPR_STRUCTURE;
e->ts.derived = sym;
e->where = where;
- e->value.constructor = head;
+ e->value.constructor = ctor_head;
*result = e;
return MATCH_YES;
gfc_error ("Syntax error in structure constructor at %C");
cleanup:
- gfc_free_constructor (head);
+ for (comp_iter = comp_head; comp_iter; )
+ {
+ gfc_structure_ctor_component *next = comp_iter->next;
+ gfc_free_structure_ctor_component (comp_iter);
+ comp_iter = next;
+ }
+ gfc_free_constructor (ctor_head);
return MATCH_ERROR;
}
/* See if this is a directly recursive function call. */
gfc_gobble_whitespace ();
if (sym->attr.recursive
- && gfc_peek_char () == '('
+ && gfc_peek_ascii_char () == '('
&& gfc_current_ns->proc_name == sym
&& !sym->attr.dimension)
{
}
}
+ 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_char () == '%'
+ 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 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_intrinsic_name (sym->name, 0)
+ || gfc_intrinsic_name (sym->name, 1))
+ sym->attr.intrinsic = 1;
+ e = gfc_get_expr ();
+ e->expr_type = EXPR_VARIABLE;
+ e->symtree = symtree;
+ m = match_varspec (e, 0);
+ break;
+ }
+
if (sym->attr.subroutine)
{
gfc_error ("Unexpected use of subroutine name '%s' at %C",
via an IMPLICIT statement. This can't wait for the
resolution phase. */
- if (gfc_peek_char () == '%'
+ if (gfc_peek_ascii_char () == '%'
&& sym->ts.type == BT_UNKNOWN
&& gfc_get_default_type (sym, sym->ns)->type == BT_DERIVED)
gfc_set_default_type (sym, 0, sym->ns);
variable is just a scalar. */
gfc_gobble_whitespace ();
- if (gfc_peek_char () != '(')
+ if (gfc_peek_ascii_char () != '(')
{
/* Assume a scalar variable */
e = gfc_get_expr ();
break;
case FL_UNKNOWN:
- if (sym->attr.access == ACCESS_PUBLIC
- || sym->attr.access == ACCESS_PRIVATE)
- break;
- if (gfc_add_flavor (&sym->attr, FL_VARIABLE,
- sym->name, NULL) == FAILURE)
- return MATCH_ERROR;
+ {
+ sym_flavor flavor = FL_UNKNOWN;
+
+ gfc_gobble_whitespace ();
+
+ if (sym->attr.external || sym->attr.procedure
+ || sym->attr.function || sym->attr.subroutine)
+ flavor = FL_PROCEDURE;
+
+ /* If it is not a procedure, is not typed and is host associated,
+ we cannot give it a flavor yet. */
+ else if (sym->ns == gfc_current_ns->parent
+ && sym->ts.type == BT_UNKNOWN)
+ break;
+
+ /* These are definitive indicators that this is a variable. */
+ else if (gfc_peek_ascii_char () != '(' || sym->ts.type != BT_UNKNOWN
+ || sym->attr.pointer || sym->as != NULL)
+ flavor = FL_VARIABLE;
+
+ if (flavor != FL_UNKNOWN
+ && gfc_add_flavor (&sym->attr, flavor, sym->name, NULL) == FAILURE)
+ return MATCH_ERROR;
+ }
break;
case FL_PARAMETER:
break;
case FL_PROCEDURE:
- /* Check for a nonrecursive function result */
- if (sym->attr.function && sym->result == sym && !sym->attr.external)
+ /* Check for a nonrecursive function result variable. */
+ if (sym->attr.function
+ && !sym->attr.external
+ && sym->result == sym
+ && ((sym == gfc_current_ns->proc_name
+ && sym == gfc_current_ns->proc_name->result)
+ || (gfc_current_ns->parent
+ && sym == gfc_current_ns->parent->proc_name->result)
+ || (sym->attr.entry
+ && sym->ns == gfc_current_ns)
+ || (sym->attr.entry
+ && sym->ns == gfc_current_ns->parent)))
{
/* If a function result is a derived type, then the derived
type may still have to be resolved. */
break;
}
+ if (sym->attr.proc_pointer)
+ break;
+
/* Fall through to error */
default:
- gfc_error ("Expected VARIABLE at %C");
+ gfc_error ("'%s' at %C is not a variable", sym->name);
return MATCH_ERROR;
}
else
implicit_ns = sym->ns;
- if (gfc_peek_char () == '%'
+ if (gfc_peek_ascii_char () == '%'
&& sym->ts.type == BT_UNKNOWN
&& gfc_get_default_type (sym, implicit_ns)->type == BT_DERIVED)
gfc_set_default_type (sym, 0, implicit_ns);
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