/* Deal with I/O statements & related stuff.
- Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006 Free Software
- Foundation, Inc.
+ Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007
+ Free Software Foundation, Inc.
Contributed by Andy Vaught
This file is part of GCC.
#include "match.h"
#include "parse.h"
-gfc_st_label format_asterisk =
- {0, NULL, NULL, -1, ST_LABEL_FORMAT, ST_LABEL_FORMAT, NULL,
- 0, {NULL, NULL}};
+gfc_st_label
+format_asterisk = {0, NULL, NULL, -1, ST_LABEL_FORMAT, ST_LABEL_FORMAT, NULL,
+ 0, {NULL, NULL}};
typedef struct
{
tag_unit = {"UNIT", " unit = %e", BT_INTEGER},
tag_advance = {"ADVANCE", " advance = %e", BT_CHARACTER},
tag_rec = {"REC", " rec = %e", BT_INTEGER},
+ tag_spos = {"POSITION", " pos = %e", BT_INTEGER},
tag_format = {"FORMAT", NULL, BT_CHARACTER},
tag_iomsg = {"IOMSG", " iomsg = %e", BT_CHARACTER},
tag_iostat = {"IOSTAT", " iostat = %v", BT_INTEGER},
tag_s_pad = {"PAD", " pad = %v", BT_CHARACTER},
tag_iolength = {"IOLENGTH", " iolength = %v", BT_INTEGER},
tag_convert = {"CONVERT", " convert = %e", BT_CHARACTER},
+ tag_strm_out = {"POS", " pos = %v", BT_INTEGER},
tag_err = {"ERR", " err = %l", BT_UNKNOWN},
tag_end = {"END", " end = %l", BT_UNKNOWN},
tag_eor = {"EOR", " eor = %l", BT_UNKNOWN};
c = gfc_next_char_literal (in_string);
if (c == '\n')
c = '\0';
+ }
+
+ if (gfc_option.flag_backslash && c == '\\')
+ {
+ locus old_locus = gfc_current_locus;
+
+ switch (gfc_next_char_literal (1))
+ {
+ case 'a':
+ c = '\a';
+ break;
+ case 'b':
+ c = '\b';
+ break;
+ case 't':
+ c = '\t';
+ break;
+ case 'f':
+ c = '\f';
+ break;
+ case 'n':
+ c = '\n';
+ break;
+ case 'r':
+ c = '\r';
+ break;
+ case 'v':
+ c = '\v';
+ break;
+ case '\\':
+ c = '\\';
+ break;
- if (mode == MODE_COPY)
- *format_string++ = c;
+ default:
+ /* Unknown backslash codes are simply not expanded. */
+ gfc_current_locus = old_locus;
+ break;
+ }
+
+ if (!(gfc_option.allow_std & GFC_STD_GNU) && !inhibit_warnings)
+ gfc_warning ("Extension: backslash character at %C");
}
+ if (mode == MODE_COPY)
+ *format_string++ = c;
+
c = TOUPPER (c);
return c;
}
static void
unget_char (void)
{
-
use_last_char = 1;
}
/* Eat up the spaces and return a character. */
static char
-next_char_not_space(void)
+next_char_not_space (void)
{
char c;
do
do
{
c = next_char_not_space ();
- if(ISDIGIT (c))
- value = 10 * value + c - '0';
+ if (ISDIGIT (c))
+ value = 10 * value + c - '0';
}
while (ISDIGIT (c));
unget_char ();
if (negative_flag)
- value = -value;
+ value = -value;
token = FMT_SIGNED_INT;
break;
c = next_char_not_space ();
if (c != '0')
zflag = 0;
- if (ISDIGIT (c))
- value = 10 * value + c - '0';
+ if (ISDIGIT (c))
+ value = 10 * value + c - '0';
}
while (ISDIGIT (c));
break;
}
}
- value++;
+ value++;
}
break;
check_format (void)
{
const char *posint_required = _("Positive width required");
- const char *period_required = _("Period required");
const char *nonneg_required = _("Nonnegative width required");
const char *unexpected_element = _("Unexpected element");
const char *unexpected_end = _("Unexpected end of format string");
t = format_lex ();
if (gfc_notify_std (GFC_STD_GNU, "Extension: $ descriptor at %C")
- == FAILURE)
- return FAILURE;
+ == FAILURE)
+ return FAILURE;
if (t != FMT_RPAREN || level > 0)
{
- error = _("$ must be the last specifier");
- goto syntax;
+ gfc_warning ("$ should be the last specifier in format at %C");
+ goto optional_comma_1;
}
goto finished;
if (t == FMT_POSINT)
break;
- error = posint_required;
- goto syntax;
+ switch (gfc_notification_std (GFC_STD_GNU))
+ {
+ case WARNING:
+ gfc_warning ("Extension: Missing positive width after L "
+ "descriptor at %C");
+ saved_token = t;
+ break;
+
+ case ERROR:
+ error = posint_required;
+ goto syntax;
+
+ case SILENT:
+ saved_token = t;
+ break;
+
+ default:
+ gcc_unreachable ();
+ }
+ break;
case FMT_A:
t = format_lex ();
u = format_lex ();
if (u != FMT_PERIOD)
{
- error = period_required;
- goto syntax;
+ /* Warn if -std=legacy, otherwise error. */
+ if (gfc_option.warn_std != 0)
+ gfc_error_now ("Period required in format specifier at %C");
+ else
+ gfc_warning ("Period required in format specifier at %C");
+ saved_token = u;
+ break;
}
u = format_lex ();
t = format_lex ();
if (t != FMT_PERIOD)
{
- error = period_required;
- goto syntax;
+ /* Warn if -std=legacy, otherwise error. */
+ if (gfc_option.warn_std != 0)
+ gfc_error_now ("Period required in format specifier at %C");
+ else
+ gfc_warning ("Period required in format specifier at %C");
+ saved_token = t;
+ break;
}
t = format_lex ();
case FMT_H:
if(mode == MODE_STRING)
{
- format_string += value;
- format_length -= value;
+ format_string += value;
+ format_length -= value;
}
else
{
- while(repeat >0)
- {
- next_char(1);
- repeat -- ;
- }
+ while (repeat >0)
+ {
+ next_char (1);
+ repeat -- ;
+ }
}
break;
optional_comma:
/* Optional comma is a weird between state where we've just finished
- reading a colon, slash or P descriptor. */
+ reading a colon, slash, dollar or P descriptor. */
t = format_lex ();
+optional_comma_1:
switch (t)
{
case FMT_COMMA:
gfc_warning ("%s in format string at %C", error);
/* TODO: More elaborate measures are needed to show where a problem
- is within a format string that has been calculated. */
+ is within a format string that has been calculated. */
}
rv = FAILURE;
like a format string. */
static void
-check_format_string (gfc_expr * e)
+check_format_string (gfc_expr *e)
{
-
mode = MODE_STRING;
format_string = e->value.character.string;
check_format ();
locus start;
if (gfc_current_ns->proc_name
- && gfc_current_ns->proc_name->attr.flavor == FL_MODULE)
+ && gfc_current_ns->proc_name->attr.flavor == FL_MODULE)
{
- gfc_error ("Format statement in module main block at %C.");
+ gfc_error ("Format statement in module main block at %C");
return MATCH_ERROR;
}
e->ts.type = BT_CHARACTER;
e->ts.kind = gfc_default_character_kind;
e->where = start;
- e->value.character.string = format_string = gfc_getmem(format_length+1);
+ e->value.character.string = format_string = gfc_getmem (format_length + 1);
e->value.character.length = format_length;
gfc_statement_label->format = e;
/* Match an expression I/O tag of some sort. */
static match
-match_etag (const io_tag * tag, gfc_expr ** v)
+match_etag (const io_tag *tag, gfc_expr **v)
{
gfc_expr *result;
match m;
/* Match a variable I/O tag of some sort. */
static match
-match_vtag (const io_tag * tag, gfc_expr ** v)
+match_vtag (const io_tag *tag, gfc_expr **v)
{
gfc_expr *result;
match m;
/* Match a label I/O tag. */
static match
-match_ltag (const io_tag * tag, gfc_st_label ** label)
+match_ltag (const io_tag *tag, gfc_st_label ** label)
{
match m;
gfc_st_label *old;
/* Do expression resolution and type-checking on an expression tag. */
static try
-resolve_tag (const io_tag * tag, gfc_expr * e)
+resolve_tag (const io_tag *tag, gfc_expr *e)
{
-
if (e == NULL)
return SUCCESS;
if (e->ts.type != tag->type && tag != &tag_format)
{
gfc_error ("%s tag at %L must be of type %s", tag->name,
- &e->where, gfc_basic_typename (tag->type));
+ &e->where, gfc_basic_typename (tag->type));
return FAILURE;
}
of integer or character type. The integer variable should be
ASSIGNED. */
if (e->symtree == NULL || e->symtree->n.sym->as == NULL
- || e->symtree->n.sym->as->rank == 0)
+ || e->symtree->n.sym->as->rank == 0)
{
if (e->ts.type != BT_CHARACTER && e->ts.type != BT_INTEGER)
{
gfc_error ("%s tag at %L must be of type %s or %s", tag->name,
- &e->where, gfc_basic_typename (BT_CHARACTER),
- gfc_basic_typename (BT_INTEGER));
+ &e->where, gfc_basic_typename (BT_CHARACTER),
+ gfc_basic_typename (BT_INTEGER));
return FAILURE;
}
else if (e->ts.type == BT_INTEGER && e->expr_type == EXPR_VARIABLE)
{
- if (gfc_notify_std (GFC_STD_F95_DEL,
- "Obsolete: ASSIGNED variable in FORMAT tag at %L",
- &e->where) == FAILURE)
+ if (gfc_notify_std (GFC_STD_F95_DEL, "Obsolete: ASSIGNED "
+ "variable in FORMAT tag at %L", &e->where)
+ == FAILURE)
return FAILURE;
if (e->symtree->n.sym->attr.assign != 1)
{
gfc_error ("Variable '%s' at %L has not been assigned a "
- "format label", e->symtree->n.sym->name, &e->where);
+ "format label", e->symtree->n.sym->name,
+ &e->where);
return FAILURE;
}
}
+ else if (e->ts.type == BT_INTEGER)
+ {
+ gfc_error ("scalar '%s' FORMAT tag at %L is not an ASSIGNED "
+ "variable", gfc_basic_typename (e->ts.type),
+ &e->where);
+ return FAILURE;
+ }
+
return SUCCESS;
}
else
assigned an Hollerith constant. */
if (e->ts.type == BT_CHARACTER)
{
- if (gfc_notify_std (GFC_STD_GNU,
- "Extension: Character array in FORMAT tag at %L",
- &e->where) == FAILURE)
+ if (gfc_notify_std (GFC_STD_GNU, "Extension: Character array "
+ "in FORMAT tag at %L", &e->where)
+ == FAILURE)
return FAILURE;
}
else
{
- if (gfc_notify_std (GFC_STD_LEGACY,
- "Extension: Non-character in FORMAT tag at %L",
- &e->where) == FAILURE)
+ if (gfc_notify_std (GFC_STD_LEGACY, "Extension: Non-character "
+ "in FORMAT tag at %L", &e->where)
+ == FAILURE)
return FAILURE;
}
return SUCCESS;
if (tag == &tag_iostat && e->ts.kind != gfc_default_integer_kind)
{
if (gfc_notify_std (GFC_STD_GNU, "Fortran 95 requires default "
- "INTEGER in IOSTAT tag at %L",
- &e->where) == FAILURE)
+ "INTEGER in IOSTAT tag at %L", &e->where)
+ == FAILURE)
return FAILURE;
}
if (tag == &tag_size && e->ts.kind != gfc_default_integer_kind)
{
- if (gfc_notify_std (GFC_STD_GNU, "Fortran 95 requires default "
- "INTEGER in SIZE tag at %L",
- &e->where) == FAILURE)
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 95 requires default "
+ "INTEGER in SIZE tag at %L", &e->where)
+ == FAILURE)
return FAILURE;
}
&e->where) == FAILURE)
return FAILURE;
}
+
+ if (tag == &tag_iolength && e->ts.kind != gfc_default_integer_kind)
+ {
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 95 requires default "
+ "INTEGER in IOLENGTH tag at %L", &e->where)
+ == FAILURE)
+ return FAILURE;
+ }
}
return SUCCESS;
/* Match a single tag of an OPEN statement. */
static match
-match_open_element (gfc_open * open)
+match_open_element (gfc_open *open)
{
match m;
/* Free the gfc_open structure and all the expressions it contains. */
void
-gfc_free_open (gfc_open * open)
+gfc_free_open (gfc_open *open)
{
-
if (open == NULL)
return;
gfc_free_expr (open->delim);
gfc_free_expr (open->pad);
gfc_free_expr (open->convert);
-
gfc_free (open);
}
/* Resolve everything in a gfc_open structure. */
try
-gfc_resolve_open (gfc_open * open)
+gfc_resolve_open (gfc_open *open)
{
RESOLVE_TAG (&tag_unit, open->unit);
RESOLVE_TAG (&tag_e_access, open->access);
RESOLVE_TAG (&tag_e_form, open->form);
RESOLVE_TAG (&tag_e_recl, open->recl);
-
RESOLVE_TAG (&tag_e_blank, open->blank);
RESOLVE_TAG (&tag_e_position, open->position);
RESOLVE_TAG (&tag_e_action, open->action);
}
+/* Check if a given value for a SPECIFIER is either in the list of values
+ allowed in F95 or F2003, issuing an error message and returning a zero
+ value if it is not allowed. */
+
+static int
+compare_to_allowed_values (const char *specifier, const char *allowed[],
+ const char *allowed_f2003[],
+ const char *allowed_gnu[], char *value,
+ const char *statement, bool warn)
+{
+ int i;
+ unsigned int len;
+
+ len = strlen (value);
+ if (len > 0)
+ {
+ for (len--; len > 0; len--)
+ if (value[len] != ' ')
+ break;
+ len++;
+ }
+
+ for (i = 0; allowed[i]; i++)
+ if (len == strlen (allowed[i])
+ && strncasecmp (value, allowed[i], strlen (allowed[i])) == 0)
+ return 1;
+
+ for (i = 0; allowed_f2003 && allowed_f2003[i]; i++)
+ if (len == strlen (allowed_f2003[i])
+ && strncasecmp (value, allowed_f2003[i], strlen (allowed_f2003[i]))
+ == 0)
+ {
+ notification n = gfc_notification_std (GFC_STD_F2003);
+
+ if (n == WARNING || (warn && n == ERROR))
+ {
+ gfc_warning ("Fortran 2003: %s specifier in %s statement at %C "
+ "has value '%s'", specifier, statement,
+ allowed_f2003[i]);
+ return 1;
+ }
+ else
+ if (n == ERROR)
+ {
+ gfc_notify_std (GFC_STD_F2003, "Fortran 2003: %s specifier in "
+ "%s statement at %C has value '%s'", specifier,
+ statement, allowed_f2003[i]);
+ return 0;
+ }
+
+ /* n == SILENT */
+ return 1;
+ }
+
+ for (i = 0; allowed_gnu && allowed_gnu[i]; i++)
+ if (len == strlen (allowed_gnu[i])
+ && strncasecmp (value, allowed_gnu[i], strlen (allowed_gnu[i])) == 0)
+ {
+ notification n = gfc_notification_std (GFC_STD_GNU);
+
+ if (n == WARNING || (warn && n == ERROR))
+ {
+ gfc_warning ("Extension: %s specifier in %s statement at %C "
+ "has value '%s'", specifier, statement,
+ allowed_gnu[i]);
+ return 1;
+ }
+ else
+ if (n == ERROR)
+ {
+ gfc_notify_std (GFC_STD_GNU, "Extension: %s specifier in "
+ "%s statement at %C has value '%s'", specifier,
+ statement, allowed_gnu[i]);
+ return 0;
+ }
+
+ /* n == SILENT */
+ return 1;
+ }
+
+ if (warn)
+ {
+ gfc_warning ("%s specifier in %s statement at %C has invalid value '%s'",
+ specifier, statement, value);
+ return 1;
+ }
+ else
+ {
+ gfc_error ("%s specifier in %s statement at %C has invalid value '%s'",
+ specifier, statement, value);
+ return 0;
+ }
+}
+
+
/* Match an OPEN statement. */
match
{
gfc_open *open;
match m;
+ bool warn;
m = gfc_match_char ('(');
if (m == MATCH_NO)
goto cleanup;
}
+ warn = (open->err || open->iostat) ? true : false;
+ /* Checks on the ACCESS specifier. */
+ if (open->access && open->access->expr_type == EXPR_CONSTANT)
+ {
+ static const char *access_f95[] = { "SEQUENTIAL", "DIRECT", NULL };
+ static const char *access_f2003[] = { "STREAM", NULL };
+ static const char *access_gnu[] = { "APPEND", NULL };
+
+ if (!compare_to_allowed_values ("ACCESS", access_f95, access_f2003,
+ access_gnu,
+ open->access->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the ACTION specifier. */
+ if (open->action && open->action->expr_type == EXPR_CONSTANT)
+ {
+ static const char *action[] = { "READ", "WRITE", "READWRITE", NULL };
+
+ if (!compare_to_allowed_values ("ACTION", action, NULL, NULL,
+ open->action->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the ASYNCHRONOUS specifier. */
+ /* TODO: code is ready, just needs uncommenting when async I/O support
+ is added ;-)
+ if (open->asynchronous && open->asynchronous->expr_type == EXPR_CONSTANT)
+ {
+ static const char * asynchronous[] = { "YES", "NO", NULL };
+
+ if (!compare_to_allowed_values
+ ("action", asynchronous, NULL, NULL,
+ open->asynchronous->value.character.string, "OPEN", warn))
+ goto cleanup;
+ }*/
+
+ /* Checks on the BLANK specifier. */
+ if (open->blank && open->blank->expr_type == EXPR_CONSTANT)
+ {
+ static const char *blank[] = { "ZERO", "NULL", NULL };
+
+ if (!compare_to_allowed_values ("BLANK", blank, NULL, NULL,
+ open->blank->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the DECIMAL specifier. */
+ /* TODO: uncomment this code when DECIMAL support is added
+ if (open->decimal && open->decimal->expr_type == EXPR_CONSTANT)
+ {
+ static const char * decimal[] = { "COMMA", "POINT", NULL };
+
+ if (!compare_to_allowed_values ("DECIMAL", decimal, NULL, NULL,
+ open->decimal->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ } */
+
+ /* Checks on the DELIM specifier. */
+ if (open->delim && open->delim->expr_type == EXPR_CONSTANT)
+ {
+ static const char *delim[] = { "APOSTROPHE", "QUOTE", "NONE", NULL };
+
+ if (!compare_to_allowed_values ("DELIM", delim, NULL, NULL,
+ open->delim->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the ENCODING specifier. */
+ /* TODO: uncomment this code when ENCODING support is added
+ if (open->encoding && open->encoding->expr_type == EXPR_CONSTANT)
+ {
+ static const char * encoding[] = { "UTF-8", "DEFAULT", NULL };
+
+ if (!compare_to_allowed_values ("ENCODING", encoding, NULL, NULL,
+ open->encoding->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ } */
+
+ /* Checks on the FORM specifier. */
+ if (open->form && open->form->expr_type == EXPR_CONSTANT)
+ {
+ static const char *form[] = { "FORMATTED", "UNFORMATTED", NULL };
+
+ if (!compare_to_allowed_values ("FORM", form, NULL, NULL,
+ open->form->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the PAD specifier. */
+ if (open->pad && open->pad->expr_type == EXPR_CONSTANT)
+ {
+ static const char *pad[] = { "YES", "NO", NULL };
+
+ if (!compare_to_allowed_values ("PAD", pad, NULL, NULL,
+ open->pad->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the POSITION specifier. */
+ if (open->position && open->position->expr_type == EXPR_CONSTANT)
+ {
+ static const char *position[] = { "ASIS", "REWIND", "APPEND", NULL };
+
+ if (!compare_to_allowed_values ("POSITION", position, NULL, NULL,
+ open->position->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ }
+
+ /* Checks on the ROUND specifier. */
+ /* TODO: uncomment this code when ROUND support is added
+ if (open->round && open->round->expr_type == EXPR_CONSTANT)
+ {
+ static const char * round[] = { "UP", "DOWN", "ZERO", "NEAREST",
+ "COMPATIBLE", "PROCESSOR_DEFINED", NULL };
+
+ if (!compare_to_allowed_values ("ROUND", round, NULL, NULL,
+ open->round->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ } */
+
+ /* Checks on the SIGN specifier. */
+ /* TODO: uncomment this code when SIGN support is added
+ if (open->sign && open->sign->expr_type == EXPR_CONSTANT)
+ {
+ static const char * sign[] = { "PLUS", "SUPPRESS", "PROCESSOR_DEFINED",
+ NULL };
+
+ if (!compare_to_allowed_values ("SIGN", sign, NULL, NULL,
+ open->sign->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+ } */
+
+#define warn_or_error(...) \
+{ \
+ if (warn) \
+ gfc_warning (__VA_ARGS__); \
+ else \
+ { \
+ gfc_error (__VA_ARGS__); \
+ goto cleanup; \
+ } \
+}
+
+ /* Checks on the RECL specifier. */
+ if (open->recl && open->recl->expr_type == EXPR_CONSTANT
+ && open->recl->ts.type == BT_INTEGER
+ && mpz_sgn (open->recl->value.integer) != 1)
+ {
+ warn_or_error ("RECL in OPEN statement at %C must be positive");
+ }
+
+ /* Checks on the STATUS specifier. */
+ if (open->status && open->status->expr_type == EXPR_CONSTANT)
+ {
+ static const char *status[] = { "OLD", "NEW", "SCRATCH",
+ "REPLACE", "UNKNOWN", NULL };
+
+ if (!compare_to_allowed_values ("STATUS", status, NULL, NULL,
+ open->status->value.character.string,
+ "OPEN", warn))
+ goto cleanup;
+
+ /* F2003, 9.4.5: If the STATUS= specifier has the value NEW or REPLACE,
+ the FILE= specifier shall appear. */
+ if (open->file == NULL
+ && (strncasecmp (open->status->value.character.string, "replace", 7)
+ == 0
+ || strncasecmp (open->status->value.character.string, "new", 3)
+ == 0))
+ {
+ warn_or_error ("The STATUS specified in OPEN statement at %C is "
+ "'%s' and no FILE specifier is present",
+ open->status->value.character.string);
+ }
+
+ /* F2003, 9.4.5: If the STATUS= specifier has the value SCRATCH,
+ the FILE= specifier shall not appear. */
+ if (strncasecmp (open->status->value.character.string, "scratch", 7)
+ == 0 && open->file)
+ {
+ warn_or_error ("The STATUS specified in OPEN statement at %C "
+ "cannot have the value SCRATCH if a FILE specifier "
+ "is present");
+ }
+ }
+
+ /* Things that are not allowed for unformatted I/O. */
+ if (open->form && open->form->expr_type == EXPR_CONSTANT
+ && (open->delim
+ /* TODO uncomment this code when F2003 support is finished */
+ /* || open->decimal || open->encoding || open->round
+ || open->sign */
+ || open->pad || open->blank)
+ && strncasecmp (open->form->value.character.string,
+ "unformatted", 11) == 0)
+ {
+ const char *spec = (open->delim ? "DELIM "
+ : (open->pad ? "PAD " : open->blank
+ ? "BLANK " : ""));
+
+ warn_or_error ("%s specifier at %C not allowed in OPEN statement for "
+ "unformatted I/O", spec);
+ }
+
+ if (open->recl && open->access && open->access->expr_type == EXPR_CONSTANT
+ && strncasecmp (open->access->value.character.string, "stream", 6) == 0)
+ {
+ warn_or_error ("RECL specifier not allowed in OPEN statement at %C for "
+ "stream I/O");
+ }
+
+ if (open->position
+ && open->access && open->access->expr_type == EXPR_CONSTANT
+ && !(strncasecmp (open->access->value.character.string,
+ "sequential", 10) == 0
+ || strncasecmp (open->access->value.character.string,
+ "stream", 6) == 0
+ || strncasecmp (open->access->value.character.string,
+ "append", 6) == 0))
+ {
+ warn_or_error ("POSITION specifier in OPEN statement at %C only allowed "
+ "for stream or sequential ACCESS");
+ }
+
+#undef warn_or_error
+
new_st.op = EXEC_OPEN;
new_st.ext.open = open;
return MATCH_YES;
/* Free a gfc_close structure an all its expressions. */
void
-gfc_free_close (gfc_close * close)
+gfc_free_close (gfc_close *close)
{
-
if (close == NULL)
return;
gfc_free_expr (close->iomsg);
gfc_free_expr (close->iostat);
gfc_free_expr (close->status);
-
gfc_free (close);
}
/* Match elements of a CLOSE statement. */
static match
-match_close_element (gfc_close * close)
+match_close_element (gfc_close *close)
{
match m;
{
gfc_close *close;
match m;
+ bool warn;
m = gfc_match_char ('(');
if (m == MATCH_NO)
goto cleanup;
}
+ warn = (close->iostat || close->err) ? true : false;
+
+ /* Checks on the STATUS specifier. */
+ if (close->status && close->status->expr_type == EXPR_CONSTANT)
+ {
+ static const char *status[] = { "KEEP", "DELETE", NULL };
+
+ if (!compare_to_allowed_values ("STATUS", status, NULL, NULL,
+ close->status->value.character.string,
+ "CLOSE", warn))
+ goto cleanup;
+ }
+
new_st.op = EXEC_CLOSE;
new_st.ext.close = close;
return MATCH_YES;
/* Resolve everything in a gfc_close structure. */
try
-gfc_resolve_close (gfc_close * close)
+gfc_resolve_close (gfc_close *close)
{
-
RESOLVE_TAG (&tag_unit, close->unit);
RESOLVE_TAG (&tag_iomsg, close->iomsg);
RESOLVE_TAG (&tag_iostat, close->iostat);
/* Free a gfc_filepos structure. */
void
-gfc_free_filepos (gfc_filepos * fp)
+gfc_free_filepos (gfc_filepos *fp)
{
-
gfc_free_expr (fp->unit);
gfc_free_expr (fp->iomsg);
gfc_free_expr (fp->iostat);
/* Match elements of a REWIND, BACKSPACE, ENDFILE, or FLUSH statement. */
static match
-match_file_element (gfc_filepos * fp)
+match_file_element (gfc_filepos *fp)
{
match m;
try
-gfc_resolve_filepos (gfc_filepos * fp)
+gfc_resolve_filepos (gfc_filepos *fp)
{
-
RESOLVE_TAG (&tag_unit, fp->unit);
RESOLVE_TAG (&tag_iostat, fp->iostat);
RESOLVE_TAG (&tag_iomsg, fp->iomsg);
match
gfc_match_endfile (void)
{
-
return match_filepos (ST_END_FILE, EXEC_ENDFILE);
}
match
gfc_match_backspace (void)
{
-
return match_filepos (ST_BACKSPACE, EXEC_BACKSPACE);
}
match
gfc_match_rewind (void)
{
-
return match_filepos (ST_REWIND, EXEC_REWIND);
}
match
gfc_match_flush (void)
{
- if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: FLUSH statement at %C") == FAILURE)
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: FLUSH statement at %C")
+ == FAILURE)
return MATCH_ERROR;
return match_filepos (ST_FLUSH, EXEC_FLUSH);
/* Match a unit specification for a data transfer statement. */
static match
-match_dt_unit (io_kind k, gfc_dt * dt)
+match_dt_unit (io_kind k, gfc_dt *dt)
{
gfc_expr *e;
/* Match a format specification. */
static match
-match_dt_format (gfc_dt * dt)
+match_dt_format (gfc_dt *dt)
{
locus where;
gfc_expr *e;
nonzero if we find such a variable. */
static int
-check_namelist (gfc_symbol * sym)
+check_namelist (gfc_symbol *sym)
{
gfc_namelist *p;
/* Match a single data transfer element. */
static match
-match_dt_element (io_kind k, gfc_dt * dt)
+match_dt_element (io_kind k, gfc_dt *dt)
{
char name[GFC_MAX_SYMBOL_LEN + 1];
gfc_symbol *sym;
m = match_etag (&tag_rec, &dt->rec);
if (m != MATCH_NO)
return m;
+ m = match_etag (&tag_spos, &dt->rec);
+ if (m != MATCH_NO)
+ return m;
m = match_out_tag (&tag_iomsg, &dt->iomsg);
if (m != MATCH_NO)
return m;
{
if (k == M_WRITE)
{
- gfc_error ("END tag at %C not allowed in output statement");
- return MATCH_ERROR;
+ gfc_error ("END tag at %C not allowed in output statement");
+ return MATCH_ERROR;
}
dt->end_where = gfc_current_locus;
}
/* Free a data transfer structure and everything below it. */
void
-gfc_free_dt (gfc_dt * dt)
+gfc_free_dt (gfc_dt *dt)
{
-
if (dt == NULL)
return;
gfc_free_expr (dt->iomsg);
gfc_free_expr (dt->iostat);
gfc_free_expr (dt->size);
-
gfc_free (dt);
}
/* Resolve everything in a gfc_dt structure. */
try
-gfc_resolve_dt (gfc_dt * dt)
+gfc_resolve_dt (gfc_dt *dt)
{
gfc_expr *e;
RESOLVE_TAG (&tag_format, dt->format_expr);
RESOLVE_TAG (&tag_rec, dt->rec);
+ RESOLVE_TAG (&tag_spos, dt->rec);
RESOLVE_TAG (&tag_advance, dt->advance);
RESOLVE_TAG (&tag_iomsg, dt->iomsg);
RESOLVE_TAG (&tag_iostat, dt->iostat);
e = dt->io_unit;
if (gfc_resolve_expr (e) == SUCCESS
&& (e->ts.type != BT_INTEGER
- && (e->ts.type != BT_CHARACTER
- || e->expr_type != EXPR_VARIABLE)))
+ && (e->ts.type != BT_CHARACTER || e->expr_type != EXPR_VARIABLE)))
{
- gfc_error
- ("UNIT specification at %L must be an INTEGER expression or a "
- "CHARACTER variable", &e->where);
+ gfc_error ("UNIT specification at %L must be an INTEGER expression "
+ "or a CHARACTER variable", &e->where);
return FAILURE;
}
{
if (gfc_has_vector_index (e))
{
- gfc_error ("Internal unit with vector subscript at %L",
- &e->where);
+ gfc_error ("Internal unit with vector subscript at %L", &e->where);
return FAILURE;
}
}
&& dt->format_label->defined == ST_LABEL_UNKNOWN)
{
gfc_error ("FORMAT label %d at %L not defined", dt->format_label->value,
- &dt->format_label->where);
+ &dt->format_label->where);
return FAILURE;
}
return SUCCESS;
which is equivalent to a single IO element. This function is
mutually recursive with match_io_element(). */
-static match match_io_element (io_kind k, gfc_code **);
+static match match_io_element (io_kind, gfc_code **);
static match
-match_io_iterator (io_kind k, gfc_code ** result)
+match_io_iterator (io_kind k, gfc_code **result)
{
gfc_code *head, *tail, *new;
gfc_iterator *iter;
expression or an IO Iterator. */
static match
-match_io_element (io_kind k, gfc_code ** cpp)
+match_io_element (io_kind k, gfc_code **cpp)
{
gfc_expr *expr;
gfc_code *cp;
case M_READ:
if (expr->symtree->n.sym->attr.intent == INTENT_IN)
{
- gfc_error
- ("Variable '%s' in input list at %C cannot be INTENT(IN)",
- expr->symtree->n.sym->name);
+ gfc_error ("Variable '%s' in input list at %C cannot be "
+ "INTENT(IN)", expr->symtree->n.sym->name);
m = MATCH_ERROR;
}
&& current_dt->io_unit->expr_type == EXPR_VARIABLE
&& gfc_impure_variable (current_dt->io_unit->symtree->n.sym))
{
- gfc_error
- ("Cannot write to internal file unit '%s' at %C inside a "
- "PURE procedure", current_dt->io_unit->symtree->n.sym->name);
+ gfc_error ("Cannot write to internal file unit '%s' at %C "
+ "inside a PURE procedure",
+ current_dt->io_unit->symtree->n.sym->name);
m = MATCH_ERROR;
}
/* Match an I/O list, building gfc_code structures as we go. */
static match
-match_io_list (io_kind k, gfc_code ** head_p)
+match_io_list (io_kind k, gfc_code **head_p)
{
gfc_code *head, *tail, *new;
match m;
/* Attach the data transfer end node. */
static void
-terminate_io (gfc_code * io_code)
+terminate_io (gfc_code *io_code)
{
gfc_code *c;
in resolve_tag and others in gfc_resolve_dt. */
static match
-check_io_constraints (io_kind k, gfc_dt *dt, gfc_code * io_code, locus * spec_end)
+check_io_constraints (io_kind k, gfc_dt *dt, gfc_code *io_code,
+ locus *spec_end)
{
#define io_constraint(condition,msg,arg)\
if (condition) \
}
match m;
- gfc_expr * expr;
- gfc_symbol * sym = NULL;
+ gfc_expr *expr;
+ gfc_symbol *sym = NULL;
m = MATCH_YES;
expr = dt->io_unit;
if (expr && expr->expr_type == EXPR_VARIABLE
- && expr->ts.type == BT_CHARACTER)
+ && expr->ts.type == BT_CHARACTER)
{
sym = expr->symtree->n.sym;
"REC tag at %L is incompatible with internal file",
&dt->rec->where);
- io_constraint (dt->namelist != NULL,
- "Internal file at %L is incompatible with namelist",
- &expr->where);
+ if (dt->namelist != NULL)
+ {
+ if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Internal file "
+ "at %L with namelist", &expr->where)
+ == FAILURE)
+ m = MATCH_ERROR;
+ }
io_constraint (dt->advance != NULL,
"ADVANCE tag at %L is incompatible with internal file",
if (expr && expr->ts.type != BT_CHARACTER)
{
- io_constraint (gfc_pure (NULL)
- && (k == M_READ || k == M_WRITE),
+ io_constraint (gfc_pure (NULL) && (k == M_READ || k == M_WRITE),
"IO UNIT in %s statement at %C must be "
"an internal file in a PURE procedure",
io_kind_name (k));
if (k != M_READ)
{
- io_constraint (dt->end,
- "END tag not allowed with output at %L",
+ io_constraint (dt->end, "END tag not allowed with output at %L",
&dt->end_where);
- io_constraint (dt->eor,
- "EOR tag not allowed with output at %L",
+ io_constraint (dt->eor, "EOR tag not allowed with output at %L",
&dt->eor_where);
io_constraint (k != M_READ && dt->size,
if (dt->advance)
{
- const char * advance;
int not_yes, not_no;
expr = dt->advance;
- advance = expr->value.character.string;
io_constraint (dt->format_label == &format_asterisk,
"List directed format(*) is not allowed with a "
"ADVANCE=specifier at %L.", &expr->where);
- not_no = strncasecmp (advance, "no", 2) != 0;
- not_yes = strncasecmp (advance, "yes", 2) != 0;
+ io_constraint (dt->format_expr == NULL && dt->format_label == NULL
+ && dt->namelist == NULL,
+ "the ADVANCE=specifier at %L must appear with an "
+ "explicit format expression", &expr->where);
+
+ if (expr->expr_type == EXPR_CONSTANT && expr->ts.type == BT_CHARACTER)
+ {
+ const char * advance = expr->value.character.string;
+ not_no = strcasecmp (advance, "no") != 0;
+ not_yes = strcasecmp (advance, "yes") != 0;
+ }
+ else
+ {
+ not_no = 0;
+ not_yes = 0;
+ }
- io_constraint (expr->expr_type == EXPR_CONSTANT
- && not_no && not_yes,
+ io_constraint (not_no && not_yes,
"ADVANCE=specifier at %L must have value = "
"YES or NO.", &expr->where);
- io_constraint (dt->size && expr->expr_type == EXPR_CONSTANT
- && not_no && k == M_READ,
+ io_constraint (dt->size && not_no && k == M_READ,
"SIZE tag at %L requires an ADVANCE = 'NO'",
&dt->size->where);
- io_constraint (dt->eor && expr->expr_type == EXPR_CONSTANT
- && not_no && k == M_READ,
+ io_constraint (dt->eor && not_no && k == M_READ,
"EOR tag at %L requires an ADVANCE = 'NO'",
&dt->eor_where);
}
}
#undef io_constraint
+
/* Match a READ, WRITE or PRINT statement. */
static match
where = gfc_current_locus;
comma_flag = 0;
current_dt = dt = gfc_getmem (sizeof (gfc_dt));
- if (gfc_match_char ('(') == MATCH_NO)
+ m = gfc_match_char ('(');
+ if (m == MATCH_NO)
{
where = gfc_current_locus;
if (k == M_WRITE)
dt->io_unit = default_unit (k);
goto get_io_list;
}
+ else
+ {
+ /* Before issuing an error for a malformed 'print (1,*)' type of
+ error, check for a default-char-expr of the form ('(I0)'). */
+ if (k == M_PRINT && m == MATCH_YES)
+ {
+ /* Reset current locus to get the initial '(' in an expression. */
+ gfc_current_locus = where;
+ dt->format_expr = NULL;
+ m = match_dt_format (dt);
+
+ if (m == MATCH_ERROR)
+ goto cleanup;
+ if (m == MATCH_NO || dt->format_expr == NULL)
+ goto syntax;
+
+ comma_flag = 1;
+ dt->io_unit = default_unit (k);
+ goto get_io_list;
+ }
+ }
/* Match a control list */
if (match_dt_element (k, dt) == MATCH_YES)
/* Free a gfc_inquire structure. */
void
-gfc_free_inquire (gfc_inquire * inquire)
+gfc_free_inquire (gfc_inquire *inquire)
{
if (inquire == NULL)
gfc_free_expr (inquire->pad);
gfc_free_expr (inquire->iolength);
gfc_free_expr (inquire->convert);
-
+ gfc_free_expr (inquire->strm_pos);
gfc_free (inquire);
}
#define RETM if (m != MATCH_NO) return m;
static match
-match_inquire_element (gfc_inquire * inquire)
+match_inquire_element (gfc_inquire *inquire)
{
match m;
RETM m = match_vtag (&tag_s_pad, &inquire->pad);
RETM m = match_vtag (&tag_iolength, &inquire->iolength);
RETM m = match_vtag (&tag_convert, &inquire->convert);
+ RETM m = match_out_tag (&tag_strm_out, &inquire->strm_pos);
RETM return MATCH_NO;
}
if (inquire->unit != NULL && inquire->file != NULL)
{
- gfc_error ("INQUIRE statement at %L cannot contain both FILE and"
- " UNIT specifiers", &loc);
+ gfc_error ("INQUIRE statement at %L cannot contain both FILE and "
+ "UNIT specifiers", &loc);
goto cleanup;
}
if (inquire->unit == NULL && inquire->file == NULL)
{
- gfc_error ("INQUIRE statement at %L requires either FILE or"
- " UNIT specifier", &loc);
+ gfc_error ("INQUIRE statement at %L requires either FILE or "
+ "UNIT specifier", &loc);
goto cleanup;
}
/* Resolve everything in a gfc_inquire structure. */
try
-gfc_resolve_inquire (gfc_inquire * inquire)
+gfc_resolve_inquire (gfc_inquire *inquire)
{
-
RESOLVE_TAG (&tag_unit, inquire->unit);
RESOLVE_TAG (&tag_file, inquire->file);
RESOLVE_TAG (&tag_iomsg, inquire->iomsg);
RESOLVE_TAG (&tag_s_pad, inquire->pad);
RESOLVE_TAG (&tag_iolength, inquire->iolength);
RESOLVE_TAG (&tag_convert, inquire->convert);
+ RESOLVE_TAG (&tag_strm_out, inquire->strm_pos);
if (gfc_reference_st_label (inquire->err, ST_LABEL_TARGET) == FAILURE)
return FAILURE;
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