/* Main parser.
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
Free Software Foundation, Inc.
Contributed by Andy Vaught
{
gfc_statement st;
locus old_locus;
- int c;
+ char c;
if (gfc_match_eos () == MATCH_YES)
return ST_NONE;
match ("import", gfc_match_import, ST_IMPORT);
match ("use", gfc_match_use, ST_USE);
- if (gfc_numeric_ts (&gfc_current_block ()->ts))
+ if (gfc_current_block ()->ts.type != BT_DERIVED)
goto end_of_block;
match (NULL, gfc_match_st_function, ST_STATEMENT_FUNCTION);
statement, we eliminate most possibilities by peeking at the
first character. */
- c = gfc_peek_char ();
+ c = gfc_peek_ascii_char ();
switch (c)
{
gfc_statement st;
locus old_locus;
match m;
- int c;
+ char c;
#ifdef GFC_DEBUG
gfc_symbol_state ();
statement, we eliminate most possibilities by peeking at the
first character. */
- c = gfc_peek_char ();
+ c = gfc_peek_ascii_char ();
switch (c)
{
break;
case 'f':
+ match ("final", gfc_match_final_decl, ST_FINAL);
match ("flush", gfc_match_flush, ST_FLUSH);
match ("format", gfc_match_format, ST_FORMAT);
break;
break;
case 'w':
+ match ("wait", gfc_match_wait, ST_WAIT);
match ("write", gfc_match_write, ST_WRITE);
break;
}
decode_omp_directive (void)
{
locus old_locus;
- int c;
+ char c;
#ifdef GFC_DEBUG
gfc_symbol_state ();
statement, we eliminate most possibilities by peeking at the
first character. */
- c = gfc_peek_char ();
+ c = gfc_peek_ascii_char ();
switch (c)
{
match ("end parallel", gfc_match_omp_eos, ST_OMP_END_PARALLEL);
match ("end sections", gfc_match_omp_end_nowait, ST_OMP_END_SECTIONS);
match ("end single", gfc_match_omp_end_single, ST_OMP_END_SINGLE);
+ match ("end task", gfc_match_omp_eos, ST_OMP_END_TASK);
match ("end workshare", gfc_match_omp_end_nowait,
ST_OMP_END_WORKSHARE);
break;
match ("single", gfc_match_omp_single, ST_OMP_SINGLE);
break;
case 't':
+ match ("task", gfc_match_omp_task, ST_OMP_TASK);
+ match ("taskwait", gfc_match_omp_taskwait, ST_OMP_TASKWAIT);
match ("threadprivate", gfc_match_omp_threadprivate,
ST_OMP_THREADPRIVATE);
case 'w':
next_free (void)
{
match m;
- int c, d, cnt, at_bol;
+ int i, cnt, at_bol;
+ char c;
at_bol = gfc_at_bol ();
gfc_gobble_whitespace ();
- c = gfc_peek_char ();
+ c = gfc_peek_ascii_char ();
if (ISDIGIT (c))
{
+ char d;
+
/* Found a statement label? */
m = gfc_match_st_label (&gfc_statement_label);
- d = gfc_peek_char ();
+ d = gfc_peek_ascii_char ();
if (m != MATCH_YES || !gfc_is_whitespace (d))
{
- gfc_match_small_literal_int (&c, &cnt);
+ gfc_match_small_literal_int (&i, &cnt);
if (cnt > 5)
gfc_error_now ("Too many digits in statement label at %C");
- if (c == 0)
+ if (i == 0)
gfc_error_now ("Zero is not a valid statement label at %C");
do
- c = gfc_next_char ();
+ c = gfc_next_ascii_char ();
while (ISDIGIT(c));
if (!gfc_is_whitespace (c))
gfc_gobble_whitespace ();
- if (at_bol && gfc_peek_char () == ';')
+ if (at_bol && gfc_peek_ascii_char () == ';')
{
gfc_error_now ("Semicolon at %C needs to be preceded by "
"statement");
- gfc_next_char (); /* Eat up the semicolon. */
+ gfc_next_ascii_char (); /* Eat up the semicolon. */
return ST_NONE;
}
{
int i;
- c = gfc_next_char ();
- for (i = 0; i < 5; i++, c = gfc_next_char ())
+ c = gfc_next_ascii_char ();
+ for (i = 0; i < 5; i++, c = gfc_next_ascii_char ())
gcc_assert (c == "!$omp"[i]);
- gcc_assert (c == ' ');
+ gcc_assert (c == ' ' || c == '\t');
gfc_gobble_whitespace ();
return decode_omp_directive ();
}
if (at_bol && c == ';')
{
gfc_error_now ("Semicolon at %C needs to be preceded by statement");
- gfc_next_char (); /* Eat up the semicolon. */
+ gfc_next_ascii_char (); /* Eat up the semicolon. */
return ST_NONE;
}
{
int label, digit_flag, i;
locus loc;
- char c;
+ gfc_char_t c;
if (!gfc_at_bol ())
return decode_statement ();
case '7':
case '8':
case '9':
- label = label * 10 + c - '0';
+ label = label * 10 + ((unsigned char) c - '0');
label_locus = gfc_current_locus;
digit_flag = 1;
break;
if (gfc_option.flag_openmp)
{
for (i = 0; i < 5; i++, c = gfc_next_char_literal (0))
- gcc_assert (TOLOWER (c) == "*$omp"[i]);
+ gcc_assert ((char) gfc_wide_tolower (c) == "*$omp"[i]);
if (c != ' ' && c != '0')
{
next_statement (void)
{
gfc_statement st;
-
+ locus old_locus;
gfc_new_block = NULL;
for (;;)
if (gfc_define_undef_line ())
continue;
+ old_locus = gfc_current_locus;
+
st = (gfc_current_form == FORM_FIXED) ? next_fixed () : next_free ();
if (st != ST_NONE)
gfc_buffer_error (0);
+ if (st == ST_GET_FCN_CHARACTERISTICS && gfc_statement_label != NULL)
+ {
+ gfc_free_st_label (gfc_statement_label);
+ gfc_statement_label = NULL;
+ gfc_current_locus = old_locus;
+ }
+
if (st != ST_NONE)
check_statement_label (st);
case ST_CLOSE: case ST_CONTINUE: case ST_DEALLOCATE: case ST_END_FILE: \
case ST_GOTO: case ST_INQUIRE: case ST_NULLIFY: case ST_OPEN: \
case ST_READ: case ST_RETURN: case ST_REWIND: case ST_SIMPLE_IF: \
- case ST_PAUSE: case ST_STOP: case ST_WRITE: case ST_ASSIGNMENT: \
+ case ST_PAUSE: case ST_STOP: case ST_WAIT: case ST_WRITE: \
case ST_POINTER_ASSIGNMENT: case ST_EXIT: case ST_CYCLE: \
- case ST_ARITHMETIC_IF: case ST_WHERE: case ST_FORALL: \
+ case ST_ASSIGNMENT: case ST_ARITHMETIC_IF: case ST_WHERE: case ST_FORALL: \
case ST_LABEL_ASSIGNMENT: case ST_FLUSH: case ST_OMP_FLUSH: \
- case ST_OMP_BARRIER
+ case ST_OMP_BARRIER: case ST_OMP_TASKWAIT
/* Statements that mark other executable statements. */
case ST_OMP_PARALLEL_SECTIONS: case ST_OMP_SECTIONS: case ST_OMP_ORDERED: \
case ST_OMP_CRITICAL: case ST_OMP_MASTER: case ST_OMP_SINGLE: \
case ST_OMP_DO: case ST_OMP_PARALLEL_DO: case ST_OMP_ATOMIC: \
- case ST_OMP_WORKSHARE: case ST_OMP_PARALLEL_WORKSHARE
+ case ST_OMP_WORKSHARE: case ST_OMP_PARALLEL_WORKSHARE: \
+ case ST_OMP_TASK
/* Declaration statements */
case ST_WHERE:
p = "WHERE";
break;
+ case ST_WAIT:
+ p = "WAIT";
+ break;
case ST_WRITE:
p = "WRITE";
break;
case ST_OMP_END_SINGLE:
p = "!$OMP END SINGLE";
break;
+ case ST_OMP_END_TASK:
+ p = "!$OMP END TASK";
+ break;
case ST_OMP_END_WORKSHARE:
p = "!$OMP END WORKSHARE";
break;
case ST_OMP_SINGLE:
p = "!$OMP SINGLE";
break;
+ case ST_OMP_TASK:
+ p = "!$OMP TASK";
+ break;
+ case ST_OMP_TASKWAIT:
+ p = "!$OMP TASKWAIT";
+ break;
case ST_OMP_THREADPRIVATE:
p = "!$OMP THREADPRIVATE";
break;
issue an error and return FAILURE. Otherwise we return SUCCESS.
Individual parsers need to verify that the statements seen are
- valid before calling here, ie ENTRY statements are not allowed in
+ valid before calling here, i.e., ENTRY statements are not allowed in
INTERFACE blocks. The following diagram is taken from the standard:
+---------------------------------------+
parse_derived (void)
{
int compiling_type, seen_private, seen_sequence, seen_component, error_flag;
+ int seen_contains, seen_contains_comp;
gfc_statement st;
gfc_state_data s;
gfc_symbol *derived_sym = NULL;
seen_private = 0;
seen_sequence = 0;
seen_component = 0;
+ seen_contains = 0;
+ seen_contains_comp = 0;
compiling_type = 1;
case ST_DATA_DECL:
case ST_PROCEDURE:
+ if (seen_contains)
+ {
+ gfc_error ("Components in TYPE at %C must precede CONTAINS");
+ error_flag = 1;
+ }
+
accept_statement (st);
seen_component = 1;
break;
+ case ST_FINAL:
+ if (!seen_contains)
+ {
+ gfc_error ("FINAL declaration at %C must be inside CONTAINS");
+ error_flag = 1;
+ }
+
+ if (gfc_notify_std (GFC_STD_F2003,
+ "Fortran 2003: FINAL procedure declaration"
+ " at %C") == FAILURE)
+ error_flag = 1;
+
+ accept_statement (ST_FINAL);
+ seen_contains_comp = 1;
+ break;
+
case ST_END_TYPE:
compiling_type = 0;
if (!seen_component
&& (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Derived type "
- "definition at %C without components")
+ "definition at %C without components")
== FAILURE))
error_flag = 1;
+ if (seen_contains && !seen_contains_comp
+ && (gfc_notify_std (GFC_STD_F2008, "Fortran 2008: Derived type "
+ "definition at %C with empty CONTAINS "
+ "section") == FAILURE))
+ error_flag = 1;
+
accept_statement (ST_END_TYPE);
break;
case ST_PRIVATE:
+ if (seen_contains)
+ {
+ gfc_error ("PRIVATE statement at %C must precede CONTAINS");
+ error_flag = 1;
+ }
+
if (gfc_find_state (COMP_MODULE) == FAILURE)
{
gfc_error ("PRIVATE statement in TYPE at %C must be inside "
break;
case ST_SEQUENCE:
+ if (seen_contains)
+ {
+ gfc_error ("SEQUENCE statement at %C must precede CONTAINS");
+ error_flag = 1;
+ }
+
if (seen_component)
{
gfc_error ("SEQUENCE statement at %C must precede "
gfc_current_block ()->name, NULL);
break;
+ case ST_CONTAINS:
+ if (gfc_notify_std (GFC_STD_F2003,
+ "Fortran 2003: CONTAINS block in derived type"
+ " definition at %C") == FAILURE)
+ error_flag = 1;
+
+ if (seen_contains)
+ {
+ gfc_error ("Already inside a CONTAINS block at %C");
+ error_flag = 1;
+ }
+
+ seen_contains = 1;
+ accept_statement (ST_CONTAINS);
+ break;
+
default:
unexpected_statement (st);
break;
unexpected_eof ();
case ST_SUBROUTINE:
- new_state = COMP_SUBROUTINE;
- gfc_add_explicit_interface (gfc_new_block, IFSRC_IFBODY,
- gfc_new_block->formal, NULL);
- break;
-
case ST_FUNCTION:
- new_state = COMP_FUNCTION;
- gfc_add_explicit_interface (gfc_new_block, IFSRC_IFBODY,
- gfc_new_block->formal, NULL);
+ if (st == ST_SUBROUTINE)
+ new_state = COMP_SUBROUTINE;
+ else if (st == ST_FUNCTION)
+ new_state = COMP_FUNCTION;
+ if (gfc_new_block->attr.pointer)
+ {
+ gfc_new_block->attr.pointer = 0;
+ gfc_new_block->attr.proc_pointer = 1;
+ }
+ if (gfc_add_explicit_interface (gfc_new_block, IFSRC_IFBODY,
+ gfc_new_block->formal, NULL) == FAILURE)
+ {
+ reject_statement ();
+ gfc_free_namespace (gfc_current_ns);
+ goto loop;
+ }
+ if (current_interface.type != INTERFACE_ABSTRACT &&
+ !gfc_new_block->attr.dummy &&
+ gfc_add_external (&gfc_new_block->attr, &gfc_current_locus) == FAILURE)
+ {
+ reject_statement ();
+ gfc_free_namespace (gfc_current_ns);
+ goto loop;
+ }
break;
case ST_PROCEDURE:
gfc_current_block ()->ts.kind = 0;
/* Keep the derived type; if it's bad, it will be discovered later. */
- if (!(ts->type = BT_DERIVED && ts->derived))
+ if (!(ts->type == BT_DERIVED && ts->derived))
ts->type = BT_UNKNOWN;
}
case ST_OMP_SINGLE:
omp_end_st = ST_OMP_END_SINGLE;
break;
+ case ST_OMP_TASK:
+ omp_end_st = ST_OMP_END_TASK;
+ break;
case ST_OMP_WORKSHARE:
omp_end_st = ST_OMP_END_WORKSHARE;
break;
case ST_OMP_CRITICAL:
case ST_OMP_MASTER:
case ST_OMP_SINGLE:
+ case ST_OMP_TASK:
parse_omp_structured_block (st, false);
break;
pop_state ();
if (!contains_statements)
- /* This is valid in Fortran 2008. */
- gfc_notify_std (GFC_STD_GNU, "Extension: CONTAINS statement without "
+ gfc_notify_std (GFC_STD_F2008, "Fortran 2008: CONTAINS statement without "
"FUNCTION or SUBROUTINE statement at %C");
}
name = "MODULE";
break;
default:
- gfc_internal_error ("gfc_gsymbol_type(): Bad type");
+ gfc_internal_error ("gfc_global_used(): Bad type");
name = NULL;
}
gfc_resolve (gfc_current_ns);
/* Dump the parse tree if requested. */
- if (gfc_option.verbose)
- gfc_show_namespace (gfc_current_ns);
+ if (gfc_option.dump_parse_tree)
+ gfc_dump_parse_tree (gfc_current_ns, stdout);
gfc_get_errors (NULL, &errors);
if (s.state == COMP_MODULE)
duplicate_main:
/* If we see a duplicate main program, shut down. If the second
- instance is an implied main program, ie data decls or executable
+ instance is an implied main program, i.e. data decls or executable
statements, we're in for lots of errors. */
gfc_error ("Two main PROGRAMs at %L and %C", &prog_locus);
reject_statement ();
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