1 /* Handle modules, which amounts to loading and saving symbols and
2 their attendant structures.
3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008,
5 Free Software Foundation, Inc.
6 Contributed by Andy Vaught
8 This file is part of GCC.
10 GCC is free software; you can redistribute it and/or modify it under
11 the terms of the GNU General Public License as published by the Free
12 Software Foundation; either version 3, or (at your option) any later
15 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
16 WARRANTY; without even the implied warranty of MERCHANTABILITY or
17 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
20 You should have received a copy of the GNU General Public License
21 along with GCC; see the file COPYING3. If not see
22 <http://www.gnu.org/licenses/>. */
24 /* The syntax of gfortran modules resembles that of lisp lists, i.e. a
25 sequence of atoms, which can be left or right parenthesis, names,
26 integers or strings. Parenthesis are always matched which allows
27 us to skip over sections at high speed without having to know
28 anything about the internal structure of the lists. A "name" is
29 usually a fortran 95 identifier, but can also start with '@' in
30 order to reference a hidden symbol.
32 The first line of a module is an informational message about what
33 created the module, the file it came from and when it was created.
34 The second line is a warning for people not to edit the module.
35 The rest of the module looks like:
37 ( ( <Interface info for UPLUS> )
38 ( <Interface info for UMINUS> )
41 ( ( <name of operator interface> <module of op interface> <i/f1> ... )
44 ( ( <name of generic interface> <module of generic interface> <i/f1> ... )
47 ( ( <common name> <symbol> <saved flag>)
53 ( <Symbol Number (in no particular order)>
55 <Module name of symbol>
56 ( <symbol information> )
65 In general, symbols refer to other symbols by their symbol number,
66 which are zero based. Symbols are written to the module in no
74 #include "parse.h" /* FIXME */
76 #include "constructor.h"
79 #define MODULE_EXTENSION ".mod"
81 /* Don't put any single quote (') in MOD_VERSION,
82 if yout want it to be recognized. */
83 #define MOD_VERSION "8"
86 /* Structure that describes a position within a module file. */
95 /* Structure for list of symbols of intrinsic modules. */
108 P_UNKNOWN = 0, P_OTHER, P_NAMESPACE, P_COMPONENT, P_SYMBOL
112 /* The fixup structure lists pointers to pointers that have to
113 be updated when a pointer value becomes known. */
115 typedef struct fixup_t
118 struct fixup_t *next;
123 /* Structure for holding extra info needed for pointers being read. */
139 typedef struct pointer_info
141 BBT_HEADER (pointer_info);
145 /* The first component of each member of the union is the pointer
152 void *pointer; /* Member for doing pointer searches. */
157 char true_name[GFC_MAX_SYMBOL_LEN + 1], module[GFC_MAX_SYMBOL_LEN + 1];
158 enum gfc_rsym_state state;
159 int ns, referenced, renamed;
162 gfc_symtree *symtree;
163 char binding_label[GFC_MAX_SYMBOL_LEN + 1];
170 enum gfc_wsym_state state;
179 #define gfc_get_pointer_info() XCNEW (pointer_info)
182 /* Local variables */
184 /* The FILE for the module we're reading or writing. */
185 static FILE *module_fp;
187 /* MD5 context structure. */
188 static struct md5_ctx ctx;
190 /* The name of the module we're reading (USE'ing) or writing. */
191 static char module_name[GFC_MAX_SYMBOL_LEN + 1];
193 /* The way the module we're reading was specified. */
194 static bool specified_nonint, specified_int;
196 static int module_line, module_column, only_flag;
198 { IO_INPUT, IO_OUTPUT }
201 static gfc_use_rename *gfc_rename_list;
202 static pointer_info *pi_root;
203 static int symbol_number; /* Counter for assigning symbol numbers */
205 /* Tells mio_expr_ref to make symbols for unused equivalence members. */
206 static bool in_load_equiv;
208 static locus use_locus;
212 /*****************************************************************/
214 /* Pointer/integer conversion. Pointers between structures are stored
215 as integers in the module file. The next couple of subroutines
216 handle this translation for reading and writing. */
218 /* Recursively free the tree of pointer structures. */
221 free_pi_tree (pointer_info *p)
226 if (p->fixup != NULL)
227 gfc_internal_error ("free_pi_tree(): Unresolved fixup");
229 free_pi_tree (p->left);
230 free_pi_tree (p->right);
236 /* Compare pointers when searching by pointer. Used when writing a
240 compare_pointers (void *_sn1, void *_sn2)
242 pointer_info *sn1, *sn2;
244 sn1 = (pointer_info *) _sn1;
245 sn2 = (pointer_info *) _sn2;
247 if (sn1->u.pointer < sn2->u.pointer)
249 if (sn1->u.pointer > sn2->u.pointer)
256 /* Compare integers when searching by integer. Used when reading a
260 compare_integers (void *_sn1, void *_sn2)
262 pointer_info *sn1, *sn2;
264 sn1 = (pointer_info *) _sn1;
265 sn2 = (pointer_info *) _sn2;
267 if (sn1->integer < sn2->integer)
269 if (sn1->integer > sn2->integer)
276 /* Initialize the pointer_info tree. */
285 compare = (iomode == IO_INPUT) ? compare_integers : compare_pointers;
287 /* Pointer 0 is the NULL pointer. */
288 p = gfc_get_pointer_info ();
293 gfc_insert_bbt (&pi_root, p, compare);
295 /* Pointer 1 is the current namespace. */
296 p = gfc_get_pointer_info ();
297 p->u.pointer = gfc_current_ns;
299 p->type = P_NAMESPACE;
301 gfc_insert_bbt (&pi_root, p, compare);
307 /* During module writing, call here with a pointer to something,
308 returning the pointer_info node. */
310 static pointer_info *
311 find_pointer (void *gp)
318 if (p->u.pointer == gp)
320 p = (gp < p->u.pointer) ? p->left : p->right;
327 /* Given a pointer while writing, returns the pointer_info tree node,
328 creating it if it doesn't exist. */
330 static pointer_info *
331 get_pointer (void *gp)
335 p = find_pointer (gp);
339 /* Pointer doesn't have an integer. Give it one. */
340 p = gfc_get_pointer_info ();
343 p->integer = symbol_number++;
345 gfc_insert_bbt (&pi_root, p, compare_pointers);
351 /* Given an integer during reading, find it in the pointer_info tree,
352 creating the node if not found. */
354 static pointer_info *
355 get_integer (int integer)
365 c = compare_integers (&t, p);
369 p = (c < 0) ? p->left : p->right;
375 p = gfc_get_pointer_info ();
376 p->integer = integer;
379 gfc_insert_bbt (&pi_root, p, compare_integers);
385 /* Recursive function to find a pointer within a tree by brute force. */
387 static pointer_info *
388 fp2 (pointer_info *p, const void *target)
395 if (p->u.pointer == target)
398 q = fp2 (p->left, target);
402 return fp2 (p->right, target);
406 /* During reading, find a pointer_info node from the pointer value.
407 This amounts to a brute-force search. */
409 static pointer_info *
410 find_pointer2 (void *p)
412 return fp2 (pi_root, p);
416 /* Resolve any fixups using a known pointer. */
419 resolve_fixups (fixup_t *f, void *gp)
432 /* Convert a string such that it starts with a lower-case character. Used
433 to convert the symtree name of a derived-type to the symbol name or to
434 the name of the associated generic function. */
437 dt_lower_string (const char *name)
439 if (name[0] != (char) TOLOWER ((unsigned char) name[0]))
440 return gfc_get_string ("%c%s", (char) TOLOWER ((unsigned char) name[0]),
442 return gfc_get_string (name);
446 /* Convert a string such that it starts with an upper-case character. Used to
447 return the symtree-name for a derived type; the symbol name itself and the
448 symtree/symbol name of the associated generic function start with a lower-
452 dt_upper_string (const char *name)
454 if (name[0] != (char) TOUPPER ((unsigned char) name[0]))
455 return gfc_get_string ("%c%s", (char) TOUPPER ((unsigned char) name[0]),
457 return gfc_get_string (name);
460 /* Call here during module reading when we know what pointer to
461 associate with an integer. Any fixups that exist are resolved at
465 associate_integer_pointer (pointer_info *p, void *gp)
467 if (p->u.pointer != NULL)
468 gfc_internal_error ("associate_integer_pointer(): Already associated");
472 resolve_fixups (p->fixup, gp);
478 /* During module reading, given an integer and a pointer to a pointer,
479 either store the pointer from an already-known value or create a
480 fixup structure in order to store things later. Returns zero if
481 the reference has been actually stored, or nonzero if the reference
482 must be fixed later (i.e., associate_integer_pointer must be called
483 sometime later. Returns the pointer_info structure. */
485 static pointer_info *
486 add_fixup (int integer, void *gp)
492 p = get_integer (integer);
494 if (p->integer == 0 || p->u.pointer != NULL)
497 *cp = (char *) p->u.pointer;
506 f->pointer = (void **) gp;
513 /*****************************************************************/
515 /* Parser related subroutines */
517 /* Free the rename list left behind by a USE statement. */
522 gfc_use_rename *next;
524 for (; gfc_rename_list; gfc_rename_list = next)
526 next = gfc_rename_list->next;
527 free (gfc_rename_list);
532 /* Match a USE statement. */
537 char name[GFC_MAX_SYMBOL_LEN + 1], module_nature[GFC_MAX_SYMBOL_LEN + 1];
538 gfc_use_rename *tail = NULL, *new_use;
539 interface_type type, type2;
543 specified_int = false;
544 specified_nonint = false;
546 if (gfc_match (" , ") == MATCH_YES)
548 if ((m = gfc_match (" %n ::", module_nature)) == MATCH_YES)
550 if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: module "
551 "nature in USE statement at %C") == FAILURE)
554 if (strcmp (module_nature, "intrinsic") == 0)
555 specified_int = true;
558 if (strcmp (module_nature, "non_intrinsic") == 0)
559 specified_nonint = true;
562 gfc_error ("Module nature in USE statement at %C shall "
563 "be either INTRINSIC or NON_INTRINSIC");
570 /* Help output a better error message than "Unclassifiable
572 gfc_match (" %n", module_nature);
573 if (strcmp (module_nature, "intrinsic") == 0
574 || strcmp (module_nature, "non_intrinsic") == 0)
575 gfc_error ("\"::\" was expected after module nature at %C "
576 "but was not found");
582 m = gfc_match (" ::");
583 if (m == MATCH_YES &&
584 gfc_notify_std (GFC_STD_F2003, "Fortran 2003: "
585 "\"USE :: module\" at %C") == FAILURE)
590 m = gfc_match ("% ");
596 use_locus = gfc_current_locus;
598 m = gfc_match_name (module_name);
605 if (gfc_match_eos () == MATCH_YES)
607 if (gfc_match_char (',') != MATCH_YES)
610 if (gfc_match (" only :") == MATCH_YES)
613 if (gfc_match_eos () == MATCH_YES)
618 /* Get a new rename struct and add it to the rename list. */
619 new_use = gfc_get_use_rename ();
620 new_use->where = gfc_current_locus;
623 if (gfc_rename_list == NULL)
624 gfc_rename_list = new_use;
626 tail->next = new_use;
629 /* See what kind of interface we're dealing with. Assume it is
631 new_use->op = INTRINSIC_NONE;
632 if (gfc_match_generic_spec (&type, name, &op) == MATCH_ERROR)
637 case INTERFACE_NAMELESS:
638 gfc_error ("Missing generic specification in USE statement at %C");
641 case INTERFACE_USER_OP:
642 case INTERFACE_GENERIC:
643 m = gfc_match (" =>");
645 if (type == INTERFACE_USER_OP && m == MATCH_YES
646 && (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Renaming "
647 "operators in USE statements at %C")
651 if (type == INTERFACE_USER_OP)
652 new_use->op = INTRINSIC_USER;
657 strcpy (new_use->use_name, name);
660 strcpy (new_use->local_name, name);
661 m = gfc_match_generic_spec (&type2, new_use->use_name, &op);
666 if (m == MATCH_ERROR)
674 strcpy (new_use->local_name, name);
676 m = gfc_match_generic_spec (&type2, new_use->use_name, &op);
681 if (m == MATCH_ERROR)
685 if (strcmp (new_use->use_name, module_name) == 0
686 || strcmp (new_use->local_name, module_name) == 0)
688 gfc_error ("The name '%s' at %C has already been used as "
689 "an external module name.", module_name);
694 case INTERFACE_INTRINSIC_OP:
702 if (gfc_match_eos () == MATCH_YES)
704 if (gfc_match_char (',') != MATCH_YES)
711 gfc_syntax_error (ST_USE);
719 /* Given a name and a number, inst, return the inst name
720 under which to load this symbol. Returns NULL if this
721 symbol shouldn't be loaded. If inst is zero, returns
722 the number of instances of this name. If interface is
723 true, a user-defined operator is sought, otherwise only
724 non-operators are sought. */
727 find_use_name_n (const char *name, int *inst, bool interface)
730 const char *low_name = NULL;
733 /* For derived types. */
734 if (name[0] != (char) TOLOWER ((unsigned char) name[0]))
735 low_name = dt_lower_string (name);
738 for (u = gfc_rename_list; u; u = u->next)
740 if ((!low_name && strcmp (u->use_name, name) != 0)
741 || (low_name && strcmp (u->use_name, low_name) != 0)
742 || (u->op == INTRINSIC_USER && !interface)
743 || (u->op != INTRINSIC_USER && interface))
756 return only_flag ? NULL : name;
762 if (u->local_name[0] == '\0')
764 return dt_upper_string (u->local_name);
767 return (u->local_name[0] != '\0') ? u->local_name : name;
771 /* Given a name, return the name under which to load this symbol.
772 Returns NULL if this symbol shouldn't be loaded. */
775 find_use_name (const char *name, bool interface)
778 return find_use_name_n (name, &i, interface);
782 /* Given a real name, return the number of use names associated with it. */
785 number_use_names (const char *name, bool interface)
788 find_use_name_n (name, &i, interface);
793 /* Try to find the operator in the current list. */
795 static gfc_use_rename *
796 find_use_operator (gfc_intrinsic_op op)
800 for (u = gfc_rename_list; u; u = u->next)
808 /*****************************************************************/
810 /* The next couple of subroutines maintain a tree used to avoid a
811 brute-force search for a combination of true name and module name.
812 While symtree names, the name that a particular symbol is known by
813 can changed with USE statements, we still have to keep track of the
814 true names to generate the correct reference, and also avoid
815 loading the same real symbol twice in a program unit.
817 When we start reading, the true name tree is built and maintained
818 as symbols are read. The tree is searched as we load new symbols
819 to see if it already exists someplace in the namespace. */
821 typedef struct true_name
823 BBT_HEADER (true_name);
829 static true_name *true_name_root;
832 /* Compare two true_name structures. */
835 compare_true_names (void *_t1, void *_t2)
840 t1 = (true_name *) _t1;
841 t2 = (true_name *) _t2;
843 c = ((t1->sym->module > t2->sym->module)
844 - (t1->sym->module < t2->sym->module));
848 return strcmp (t1->name, t2->name);
852 /* Given a true name, search the true name tree to see if it exists
853 within the main namespace. */
856 find_true_name (const char *name, const char *module)
862 t.name = gfc_get_string (name);
864 sym.module = gfc_get_string (module);
872 c = compare_true_names ((void *) (&t), (void *) p);
876 p = (c < 0) ? p->left : p->right;
883 /* Given a gfc_symbol pointer that is not in the true name tree, add it. */
886 add_true_name (gfc_symbol *sym)
890 t = XCNEW (true_name);
892 if (sym->attr.flavor == FL_DERIVED)
893 t->name = dt_upper_string (sym->name);
897 gfc_insert_bbt (&true_name_root, t, compare_true_names);
901 /* Recursive function to build the initial true name tree by
902 recursively traversing the current namespace. */
905 build_tnt (gfc_symtree *st)
911 build_tnt (st->left);
912 build_tnt (st->right);
914 if (st->n.sym->attr.flavor == FL_DERIVED)
915 name = dt_upper_string (st->n.sym->name);
917 name = st->n.sym->name;
919 if (find_true_name (name, st->n.sym->module) != NULL)
922 add_true_name (st->n.sym);
926 /* Initialize the true name tree with the current namespace. */
929 init_true_name_tree (void)
931 true_name_root = NULL;
932 build_tnt (gfc_current_ns->sym_root);
936 /* Recursively free a true name tree node. */
939 free_true_name (true_name *t)
943 free_true_name (t->left);
944 free_true_name (t->right);
950 /*****************************************************************/
952 /* Module reading and writing. */
956 ATOM_NAME, ATOM_LPAREN, ATOM_RPAREN, ATOM_INTEGER, ATOM_STRING
960 static atom_type last_atom;
963 /* The name buffer must be at least as long as a symbol name. Right
964 now it's not clear how we're going to store numeric constants--
965 probably as a hexadecimal string, since this will allow the exact
966 number to be preserved (this can't be done by a decimal
967 representation). Worry about that later. TODO! */
969 #define MAX_ATOM_SIZE 100
972 static char *atom_string, atom_name[MAX_ATOM_SIZE];
975 /* Report problems with a module. Error reporting is not very
976 elaborate, since this sorts of errors shouldn't really happen.
977 This subroutine never returns. */
979 static void bad_module (const char *) ATTRIBUTE_NORETURN;
982 bad_module (const char *msgid)
989 gfc_fatal_error ("Reading module %s at line %d column %d: %s",
990 module_name, module_line, module_column, msgid);
993 gfc_fatal_error ("Writing module %s at line %d column %d: %s",
994 module_name, module_line, module_column, msgid);
997 gfc_fatal_error ("Module %s at line %d column %d: %s",
998 module_name, module_line, module_column, msgid);
1004 /* Set the module's input pointer. */
1007 set_module_locus (module_locus *m)
1009 module_column = m->column;
1010 module_line = m->line;
1011 fsetpos (module_fp, &m->pos);
1015 /* Get the module's input pointer so that we can restore it later. */
1018 get_module_locus (module_locus *m)
1020 m->column = module_column;
1021 m->line = module_line;
1022 fgetpos (module_fp, &m->pos);
1026 /* Get the next character in the module, updating our reckoning of
1034 c = getc (module_fp);
1037 bad_module ("Unexpected EOF");
1050 /* Parse a string constant. The delimiter is guaranteed to be a
1060 get_module_locus (&start);
1064 /* See how long the string is. */
1069 bad_module ("Unexpected end of module in string constant");
1087 set_module_locus (&start);
1089 atom_string = p = XCNEWVEC (char, len + 1);
1091 for (; len > 0; len--)
1095 module_char (); /* Guaranteed to be another \'. */
1099 module_char (); /* Terminating \'. */
1100 *p = '\0'; /* C-style string for debug purposes. */
1104 /* Parse a small integer. */
1107 parse_integer (int c)
1115 get_module_locus (&m);
1121 atom_int = 10 * atom_int + c - '0';
1122 if (atom_int > 99999999)
1123 bad_module ("Integer overflow");
1126 set_module_locus (&m);
1144 get_module_locus (&m);
1149 if (!ISALNUM (c) && c != '_' && c != '-')
1153 if (++len > GFC_MAX_SYMBOL_LEN)
1154 bad_module ("Name too long");
1159 fseek (module_fp, -1, SEEK_CUR);
1160 module_column = m.column + len - 1;
1167 /* Read the next atom in the module's input stream. */
1178 while (c == ' ' || c == '\r' || c == '\n');
1203 return ATOM_INTEGER;
1261 bad_module ("Bad name");
1268 /* Peek at the next atom on the input. */
1276 get_module_locus (&m);
1279 if (a == ATOM_STRING)
1282 set_module_locus (&m);
1287 /* Read the next atom from the input, requiring that it be a
1291 require_atom (atom_type type)
1297 get_module_locus (&m);
1305 p = _("Expected name");
1308 p = _("Expected left parenthesis");
1311 p = _("Expected right parenthesis");
1314 p = _("Expected integer");
1317 p = _("Expected string");
1320 gfc_internal_error ("require_atom(): bad atom type required");
1323 set_module_locus (&m);
1329 /* Given a pointer to an mstring array, require that the current input
1330 be one of the strings in the array. We return the enum value. */
1333 find_enum (const mstring *m)
1337 i = gfc_string2code (m, atom_name);
1341 bad_module ("find_enum(): Enum not found");
1347 /**************** Module output subroutines ***************************/
1349 /* Output a character to a module file. */
1352 write_char (char out)
1354 if (putc (out, module_fp) == EOF)
1355 gfc_fatal_error ("Error writing modules file: %s", xstrerror (errno));
1357 /* Add this to our MD5. */
1358 md5_process_bytes (&out, sizeof (out), &ctx);
1370 /* Write an atom to a module. The line wrapping isn't perfect, but it
1371 should work most of the time. This isn't that big of a deal, since
1372 the file really isn't meant to be read by people anyway. */
1375 write_atom (atom_type atom, const void *v)
1385 p = (const char *) v;
1397 i = *((const int *) v);
1399 gfc_internal_error ("write_atom(): Writing negative integer");
1401 sprintf (buffer, "%d", i);
1406 gfc_internal_error ("write_atom(): Trying to write dab atom");
1410 if(p == NULL || *p == '\0')
1415 if (atom != ATOM_RPAREN)
1417 if (module_column + len > 72)
1422 if (last_atom != ATOM_LPAREN && module_column != 1)
1427 if (atom == ATOM_STRING)
1430 while (p != NULL && *p)
1432 if (atom == ATOM_STRING && *p == '\'')
1437 if (atom == ATOM_STRING)
1445 /***************** Mid-level I/O subroutines *****************/
1447 /* These subroutines let their caller read or write atoms without
1448 caring about which of the two is actually happening. This lets a
1449 subroutine concentrate on the actual format of the data being
1452 static void mio_expr (gfc_expr **);
1453 pointer_info *mio_symbol_ref (gfc_symbol **);
1454 pointer_info *mio_interface_rest (gfc_interface **);
1455 static void mio_symtree_ref (gfc_symtree **);
1457 /* Read or write an enumerated value. On writing, we return the input
1458 value for the convenience of callers. We avoid using an integer
1459 pointer because enums are sometimes inside bitfields. */
1462 mio_name (int t, const mstring *m)
1464 if (iomode == IO_OUTPUT)
1465 write_atom (ATOM_NAME, gfc_code2string (m, t));
1468 require_atom (ATOM_NAME);
1475 /* Specialization of mio_name. */
1477 #define DECL_MIO_NAME(TYPE) \
1478 static inline TYPE \
1479 MIO_NAME(TYPE) (TYPE t, const mstring *m) \
1481 return (TYPE) mio_name ((int) t, m); \
1483 #define MIO_NAME(TYPE) mio_name_##TYPE
1488 if (iomode == IO_OUTPUT)
1489 write_atom (ATOM_LPAREN, NULL);
1491 require_atom (ATOM_LPAREN);
1498 if (iomode == IO_OUTPUT)
1499 write_atom (ATOM_RPAREN, NULL);
1501 require_atom (ATOM_RPAREN);
1506 mio_integer (int *ip)
1508 if (iomode == IO_OUTPUT)
1509 write_atom (ATOM_INTEGER, ip);
1512 require_atom (ATOM_INTEGER);
1518 /* Read or write a gfc_intrinsic_op value. */
1521 mio_intrinsic_op (gfc_intrinsic_op* op)
1523 /* FIXME: Would be nicer to do this via the operators symbolic name. */
1524 if (iomode == IO_OUTPUT)
1526 int converted = (int) *op;
1527 write_atom (ATOM_INTEGER, &converted);
1531 require_atom (ATOM_INTEGER);
1532 *op = (gfc_intrinsic_op) atom_int;
1537 /* Read or write a character pointer that points to a string on the heap. */
1540 mio_allocated_string (const char *s)
1542 if (iomode == IO_OUTPUT)
1544 write_atom (ATOM_STRING, s);
1549 require_atom (ATOM_STRING);
1555 /* Functions for quoting and unquoting strings. */
1558 quote_string (const gfc_char_t *s, const size_t slength)
1560 const gfc_char_t *p;
1564 /* Calculate the length we'll need: a backslash takes two ("\\"),
1565 non-printable characters take 10 ("\Uxxxxxxxx") and others take 1. */
1566 for (p = s, i = 0; i < slength; p++, i++)
1570 else if (!gfc_wide_is_printable (*p))
1576 q = res = XCNEWVEC (char, len + 1);
1577 for (p = s, i = 0; i < slength; p++, i++)
1580 *q++ = '\\', *q++ = '\\';
1581 else if (!gfc_wide_is_printable (*p))
1583 sprintf (q, "\\U%08" HOST_WIDE_INT_PRINT "x",
1584 (unsigned HOST_WIDE_INT) *p);
1588 *q++ = (unsigned char) *p;
1596 unquote_string (const char *s)
1602 for (p = s, len = 0; *p; p++, len++)
1609 else if (p[1] == 'U')
1610 p += 9; /* That is a "\U????????". */
1612 gfc_internal_error ("unquote_string(): got bad string");
1615 res = gfc_get_wide_string (len + 1);
1616 for (i = 0, p = s; i < len; i++, p++)
1621 res[i] = (unsigned char) *p;
1622 else if (p[1] == '\\')
1624 res[i] = (unsigned char) '\\';
1629 /* We read the 8-digits hexadecimal constant that follows. */
1634 gcc_assert (p[1] == 'U');
1635 for (j = 0; j < 8; j++)
1638 gcc_assert (sscanf (&p[j+2], "%01x", &n) == 1);
1652 /* Read or write a character pointer that points to a wide string on the
1653 heap, performing quoting/unquoting of nonprintable characters using the
1654 form \U???????? (where each ? is a hexadecimal digit).
1655 Length is the length of the string, only known and used in output mode. */
1657 static const gfc_char_t *
1658 mio_allocated_wide_string (const gfc_char_t *s, const size_t length)
1660 if (iomode == IO_OUTPUT)
1662 char *quoted = quote_string (s, length);
1663 write_atom (ATOM_STRING, quoted);
1669 gfc_char_t *unquoted;
1671 require_atom (ATOM_STRING);
1672 unquoted = unquote_string (atom_string);
1679 /* Read or write a string that is in static memory. */
1682 mio_pool_string (const char **stringp)
1684 /* TODO: one could write the string only once, and refer to it via a
1687 /* As a special case we have to deal with a NULL string. This
1688 happens for the 'module' member of 'gfc_symbol's that are not in a
1689 module. We read / write these as the empty string. */
1690 if (iomode == IO_OUTPUT)
1692 const char *p = *stringp == NULL ? "" : *stringp;
1693 write_atom (ATOM_STRING, p);
1697 require_atom (ATOM_STRING);
1698 *stringp = atom_string[0] == '\0' ? NULL : gfc_get_string (atom_string);
1704 /* Read or write a string that is inside of some already-allocated
1708 mio_internal_string (char *string)
1710 if (iomode == IO_OUTPUT)
1711 write_atom (ATOM_STRING, string);
1714 require_atom (ATOM_STRING);
1715 strcpy (string, atom_string);
1722 { AB_ALLOCATABLE, AB_DIMENSION, AB_EXTERNAL, AB_INTRINSIC, AB_OPTIONAL,
1723 AB_POINTER, AB_TARGET, AB_DUMMY, AB_RESULT, AB_DATA,
1724 AB_IN_NAMELIST, AB_IN_COMMON, AB_FUNCTION, AB_SUBROUTINE, AB_SEQUENCE,
1725 AB_ELEMENTAL, AB_PURE, AB_RECURSIVE, AB_GENERIC, AB_ALWAYS_EXPLICIT,
1726 AB_CRAY_POINTER, AB_CRAY_POINTEE, AB_THREADPRIVATE,
1727 AB_ALLOC_COMP, AB_POINTER_COMP, AB_PROC_POINTER_COMP, AB_PRIVATE_COMP,
1728 AB_VALUE, AB_VOLATILE, AB_PROTECTED, AB_LOCK_COMP,
1729 AB_IS_BIND_C, AB_IS_C_INTEROP, AB_IS_ISO_C, AB_ABSTRACT, AB_ZERO_COMP,
1730 AB_IS_CLASS, AB_PROCEDURE, AB_PROC_POINTER, AB_ASYNCHRONOUS, AB_CODIMENSION,
1731 AB_COARRAY_COMP, AB_VTYPE, AB_VTAB, AB_CONTIGUOUS, AB_CLASS_POINTER,
1736 static const mstring attr_bits[] =
1738 minit ("ALLOCATABLE", AB_ALLOCATABLE),
1739 minit ("ASYNCHRONOUS", AB_ASYNCHRONOUS),
1740 minit ("DIMENSION", AB_DIMENSION),
1741 minit ("CODIMENSION", AB_CODIMENSION),
1742 minit ("CONTIGUOUS", AB_CONTIGUOUS),
1743 minit ("EXTERNAL", AB_EXTERNAL),
1744 minit ("INTRINSIC", AB_INTRINSIC),
1745 minit ("OPTIONAL", AB_OPTIONAL),
1746 minit ("POINTER", AB_POINTER),
1747 minit ("VOLATILE", AB_VOLATILE),
1748 minit ("TARGET", AB_TARGET),
1749 minit ("THREADPRIVATE", AB_THREADPRIVATE),
1750 minit ("DUMMY", AB_DUMMY),
1751 minit ("RESULT", AB_RESULT),
1752 minit ("DATA", AB_DATA),
1753 minit ("IN_NAMELIST", AB_IN_NAMELIST),
1754 minit ("IN_COMMON", AB_IN_COMMON),
1755 minit ("FUNCTION", AB_FUNCTION),
1756 minit ("SUBROUTINE", AB_SUBROUTINE),
1757 minit ("SEQUENCE", AB_SEQUENCE),
1758 minit ("ELEMENTAL", AB_ELEMENTAL),
1759 minit ("PURE", AB_PURE),
1760 minit ("RECURSIVE", AB_RECURSIVE),
1761 minit ("GENERIC", AB_GENERIC),
1762 minit ("ALWAYS_EXPLICIT", AB_ALWAYS_EXPLICIT),
1763 minit ("CRAY_POINTER", AB_CRAY_POINTER),
1764 minit ("CRAY_POINTEE", AB_CRAY_POINTEE),
1765 minit ("IS_BIND_C", AB_IS_BIND_C),
1766 minit ("IS_C_INTEROP", AB_IS_C_INTEROP),
1767 minit ("IS_ISO_C", AB_IS_ISO_C),
1768 minit ("VALUE", AB_VALUE),
1769 minit ("ALLOC_COMP", AB_ALLOC_COMP),
1770 minit ("COARRAY_COMP", AB_COARRAY_COMP),
1771 minit ("LOCK_COMP", AB_LOCK_COMP),
1772 minit ("POINTER_COMP", AB_POINTER_COMP),
1773 minit ("PROC_POINTER_COMP", AB_PROC_POINTER_COMP),
1774 minit ("PRIVATE_COMP", AB_PRIVATE_COMP),
1775 minit ("ZERO_COMP", AB_ZERO_COMP),
1776 minit ("PROTECTED", AB_PROTECTED),
1777 minit ("ABSTRACT", AB_ABSTRACT),
1778 minit ("IS_CLASS", AB_IS_CLASS),
1779 minit ("PROCEDURE", AB_PROCEDURE),
1780 minit ("PROC_POINTER", AB_PROC_POINTER),
1781 minit ("VTYPE", AB_VTYPE),
1782 minit ("VTAB", AB_VTAB),
1783 minit ("CLASS_POINTER", AB_CLASS_POINTER),
1784 minit ("IMPLICIT_PURE", AB_IMPLICIT_PURE),
1788 /* For binding attributes. */
1789 static const mstring binding_passing[] =
1792 minit ("NOPASS", 1),
1795 static const mstring binding_overriding[] =
1797 minit ("OVERRIDABLE", 0),
1798 minit ("NON_OVERRIDABLE", 1),
1799 minit ("DEFERRED", 2),
1802 static const mstring binding_generic[] =
1804 minit ("SPECIFIC", 0),
1805 minit ("GENERIC", 1),
1808 static const mstring binding_ppc[] =
1810 minit ("NO_PPC", 0),
1815 /* Specialization of mio_name. */
1816 DECL_MIO_NAME (ab_attribute)
1817 DECL_MIO_NAME (ar_type)
1818 DECL_MIO_NAME (array_type)
1820 DECL_MIO_NAME (expr_t)
1821 DECL_MIO_NAME (gfc_access)
1822 DECL_MIO_NAME (gfc_intrinsic_op)
1823 DECL_MIO_NAME (ifsrc)
1824 DECL_MIO_NAME (save_state)
1825 DECL_MIO_NAME (procedure_type)
1826 DECL_MIO_NAME (ref_type)
1827 DECL_MIO_NAME (sym_flavor)
1828 DECL_MIO_NAME (sym_intent)
1829 #undef DECL_MIO_NAME
1831 /* Symbol attributes are stored in list with the first three elements
1832 being the enumerated fields, while the remaining elements (if any)
1833 indicate the individual attribute bits. The access field is not
1834 saved-- it controls what symbols are exported when a module is
1838 mio_symbol_attribute (symbol_attribute *attr)
1841 unsigned ext_attr,extension_level;
1845 attr->flavor = MIO_NAME (sym_flavor) (attr->flavor, flavors);
1846 attr->intent = MIO_NAME (sym_intent) (attr->intent, intents);
1847 attr->proc = MIO_NAME (procedure_type) (attr->proc, procedures);
1848 attr->if_source = MIO_NAME (ifsrc) (attr->if_source, ifsrc_types);
1849 attr->save = MIO_NAME (save_state) (attr->save, save_status);
1851 ext_attr = attr->ext_attr;
1852 mio_integer ((int *) &ext_attr);
1853 attr->ext_attr = ext_attr;
1855 extension_level = attr->extension;
1856 mio_integer ((int *) &extension_level);
1857 attr->extension = extension_level;
1859 if (iomode == IO_OUTPUT)
1861 if (attr->allocatable)
1862 MIO_NAME (ab_attribute) (AB_ALLOCATABLE, attr_bits);
1863 if (attr->asynchronous)
1864 MIO_NAME (ab_attribute) (AB_ASYNCHRONOUS, attr_bits);
1865 if (attr->dimension)
1866 MIO_NAME (ab_attribute) (AB_DIMENSION, attr_bits);
1867 if (attr->codimension)
1868 MIO_NAME (ab_attribute) (AB_CODIMENSION, attr_bits);
1869 if (attr->contiguous)
1870 MIO_NAME (ab_attribute) (AB_CONTIGUOUS, attr_bits);
1872 MIO_NAME (ab_attribute) (AB_EXTERNAL, attr_bits);
1873 if (attr->intrinsic)
1874 MIO_NAME (ab_attribute) (AB_INTRINSIC, attr_bits);
1876 MIO_NAME (ab_attribute) (AB_OPTIONAL, attr_bits);
1878 MIO_NAME (ab_attribute) (AB_POINTER, attr_bits);
1879 if (attr->class_pointer)
1880 MIO_NAME (ab_attribute) (AB_CLASS_POINTER, attr_bits);
1881 if (attr->is_protected)
1882 MIO_NAME (ab_attribute) (AB_PROTECTED, attr_bits);
1884 MIO_NAME (ab_attribute) (AB_VALUE, attr_bits);
1885 if (attr->volatile_)
1886 MIO_NAME (ab_attribute) (AB_VOLATILE, attr_bits);
1888 MIO_NAME (ab_attribute) (AB_TARGET, attr_bits);
1889 if (attr->threadprivate)
1890 MIO_NAME (ab_attribute) (AB_THREADPRIVATE, attr_bits);
1892 MIO_NAME (ab_attribute) (AB_DUMMY, attr_bits);
1894 MIO_NAME (ab_attribute) (AB_RESULT, attr_bits);
1895 /* We deliberately don't preserve the "entry" flag. */
1898 MIO_NAME (ab_attribute) (AB_DATA, attr_bits);
1899 if (attr->in_namelist)
1900 MIO_NAME (ab_attribute) (AB_IN_NAMELIST, attr_bits);
1901 if (attr->in_common)
1902 MIO_NAME (ab_attribute) (AB_IN_COMMON, attr_bits);
1905 MIO_NAME (ab_attribute) (AB_FUNCTION, attr_bits);
1906 if (attr->subroutine)
1907 MIO_NAME (ab_attribute) (AB_SUBROUTINE, attr_bits);
1909 MIO_NAME (ab_attribute) (AB_GENERIC, attr_bits);
1911 MIO_NAME (ab_attribute) (AB_ABSTRACT, attr_bits);
1914 MIO_NAME (ab_attribute) (AB_SEQUENCE, attr_bits);
1915 if (attr->elemental)
1916 MIO_NAME (ab_attribute) (AB_ELEMENTAL, attr_bits);
1918 MIO_NAME (ab_attribute) (AB_PURE, attr_bits);
1919 if (attr->implicit_pure)
1920 MIO_NAME (ab_attribute) (AB_IMPLICIT_PURE, attr_bits);
1921 if (attr->recursive)
1922 MIO_NAME (ab_attribute) (AB_RECURSIVE, attr_bits);
1923 if (attr->always_explicit)
1924 MIO_NAME (ab_attribute) (AB_ALWAYS_EXPLICIT, attr_bits);
1925 if (attr->cray_pointer)
1926 MIO_NAME (ab_attribute) (AB_CRAY_POINTER, attr_bits);
1927 if (attr->cray_pointee)
1928 MIO_NAME (ab_attribute) (AB_CRAY_POINTEE, attr_bits);
1929 if (attr->is_bind_c)
1930 MIO_NAME(ab_attribute) (AB_IS_BIND_C, attr_bits);
1931 if (attr->is_c_interop)
1932 MIO_NAME(ab_attribute) (AB_IS_C_INTEROP, attr_bits);
1934 MIO_NAME(ab_attribute) (AB_IS_ISO_C, attr_bits);
1935 if (attr->alloc_comp)
1936 MIO_NAME (ab_attribute) (AB_ALLOC_COMP, attr_bits);
1937 if (attr->pointer_comp)
1938 MIO_NAME (ab_attribute) (AB_POINTER_COMP, attr_bits);
1939 if (attr->proc_pointer_comp)
1940 MIO_NAME (ab_attribute) (AB_PROC_POINTER_COMP, attr_bits);
1941 if (attr->private_comp)
1942 MIO_NAME (ab_attribute) (AB_PRIVATE_COMP, attr_bits);
1943 if (attr->coarray_comp)
1944 MIO_NAME (ab_attribute) (AB_COARRAY_COMP, attr_bits);
1945 if (attr->lock_comp)
1946 MIO_NAME (ab_attribute) (AB_LOCK_COMP, attr_bits);
1947 if (attr->zero_comp)
1948 MIO_NAME (ab_attribute) (AB_ZERO_COMP, attr_bits);
1950 MIO_NAME (ab_attribute) (AB_IS_CLASS, attr_bits);
1951 if (attr->procedure)
1952 MIO_NAME (ab_attribute) (AB_PROCEDURE, attr_bits);
1953 if (attr->proc_pointer)
1954 MIO_NAME (ab_attribute) (AB_PROC_POINTER, attr_bits);
1956 MIO_NAME (ab_attribute) (AB_VTYPE, attr_bits);
1958 MIO_NAME (ab_attribute) (AB_VTAB, attr_bits);
1968 if (t == ATOM_RPAREN)
1971 bad_module ("Expected attribute bit name");
1973 switch ((ab_attribute) find_enum (attr_bits))
1975 case AB_ALLOCATABLE:
1976 attr->allocatable = 1;
1978 case AB_ASYNCHRONOUS:
1979 attr->asynchronous = 1;
1982 attr->dimension = 1;
1984 case AB_CODIMENSION:
1985 attr->codimension = 1;
1988 attr->contiguous = 1;
1994 attr->intrinsic = 1;
2002 case AB_CLASS_POINTER:
2003 attr->class_pointer = 1;
2006 attr->is_protected = 1;
2012 attr->volatile_ = 1;
2017 case AB_THREADPRIVATE:
2018 attr->threadprivate = 1;
2029 case AB_IN_NAMELIST:
2030 attr->in_namelist = 1;
2033 attr->in_common = 1;
2039 attr->subroutine = 1;
2051 attr->elemental = 1;
2056 case AB_IMPLICIT_PURE:
2057 attr->implicit_pure = 1;
2060 attr->recursive = 1;
2062 case AB_ALWAYS_EXPLICIT:
2063 attr->always_explicit = 1;
2065 case AB_CRAY_POINTER:
2066 attr->cray_pointer = 1;
2068 case AB_CRAY_POINTEE:
2069 attr->cray_pointee = 1;
2072 attr->is_bind_c = 1;
2074 case AB_IS_C_INTEROP:
2075 attr->is_c_interop = 1;
2081 attr->alloc_comp = 1;
2083 case AB_COARRAY_COMP:
2084 attr->coarray_comp = 1;
2087 attr->lock_comp = 1;
2089 case AB_POINTER_COMP:
2090 attr->pointer_comp = 1;
2092 case AB_PROC_POINTER_COMP:
2093 attr->proc_pointer_comp = 1;
2095 case AB_PRIVATE_COMP:
2096 attr->private_comp = 1;
2099 attr->zero_comp = 1;
2105 attr->procedure = 1;
2107 case AB_PROC_POINTER:
2108 attr->proc_pointer = 1;
2122 static const mstring bt_types[] = {
2123 minit ("INTEGER", BT_INTEGER),
2124 minit ("REAL", BT_REAL),
2125 minit ("COMPLEX", BT_COMPLEX),
2126 minit ("LOGICAL", BT_LOGICAL),
2127 minit ("CHARACTER", BT_CHARACTER),
2128 minit ("DERIVED", BT_DERIVED),
2129 minit ("CLASS", BT_CLASS),
2130 minit ("PROCEDURE", BT_PROCEDURE),
2131 minit ("UNKNOWN", BT_UNKNOWN),
2132 minit ("VOID", BT_VOID),
2138 mio_charlen (gfc_charlen **clp)
2144 if (iomode == IO_OUTPUT)
2148 mio_expr (&cl->length);
2152 if (peek_atom () != ATOM_RPAREN)
2154 cl = gfc_new_charlen (gfc_current_ns, NULL);
2155 mio_expr (&cl->length);
2164 /* See if a name is a generated name. */
2167 check_unique_name (const char *name)
2169 return *name == '@';
2174 mio_typespec (gfc_typespec *ts)
2178 ts->type = MIO_NAME (bt) (ts->type, bt_types);
2180 if (ts->type != BT_DERIVED && ts->type != BT_CLASS)
2181 mio_integer (&ts->kind);
2183 mio_symbol_ref (&ts->u.derived);
2185 mio_symbol_ref (&ts->interface);
2187 /* Add info for C interop and is_iso_c. */
2188 mio_integer (&ts->is_c_interop);
2189 mio_integer (&ts->is_iso_c);
2191 /* If the typespec is for an identifier either from iso_c_binding, or
2192 a constant that was initialized to an identifier from it, use the
2193 f90_type. Otherwise, use the ts->type, since it shouldn't matter. */
2195 ts->f90_type = MIO_NAME (bt) (ts->f90_type, bt_types);
2197 ts->f90_type = MIO_NAME (bt) (ts->type, bt_types);
2199 if (ts->type != BT_CHARACTER)
2201 /* ts->u.cl is only valid for BT_CHARACTER. */
2206 mio_charlen (&ts->u.cl);
2208 /* So as not to disturb the existing API, use an ATOM_NAME to
2209 transmit deferred characteristic for characters (F2003). */
2210 if (iomode == IO_OUTPUT)
2212 if (ts->type == BT_CHARACTER && ts->deferred)
2213 write_atom (ATOM_NAME, "DEFERRED_CL");
2215 else if (peek_atom () != ATOM_RPAREN)
2217 if (parse_atom () != ATOM_NAME)
2218 bad_module ("Expected string");
2226 static const mstring array_spec_types[] = {
2227 minit ("EXPLICIT", AS_EXPLICIT),
2228 minit ("ASSUMED_SHAPE", AS_ASSUMED_SHAPE),
2229 minit ("DEFERRED", AS_DEFERRED),
2230 minit ("ASSUMED_SIZE", AS_ASSUMED_SIZE),
2236 mio_array_spec (gfc_array_spec **asp)
2243 if (iomode == IO_OUTPUT)
2251 if (peek_atom () == ATOM_RPAREN)
2257 *asp = as = gfc_get_array_spec ();
2260 mio_integer (&as->rank);
2261 mio_integer (&as->corank);
2262 as->type = MIO_NAME (array_type) (as->type, array_spec_types);
2264 if (iomode == IO_INPUT && as->corank)
2265 as->cotype = (as->type == AS_DEFERRED) ? AS_DEFERRED : AS_EXPLICIT;
2267 for (i = 0; i < as->rank + as->corank; i++)
2269 mio_expr (&as->lower[i]);
2270 mio_expr (&as->upper[i]);
2278 /* Given a pointer to an array reference structure (which lives in a
2279 gfc_ref structure), find the corresponding array specification
2280 structure. Storing the pointer in the ref structure doesn't quite
2281 work when loading from a module. Generating code for an array
2282 reference also needs more information than just the array spec. */
2284 static const mstring array_ref_types[] = {
2285 minit ("FULL", AR_FULL),
2286 minit ("ELEMENT", AR_ELEMENT),
2287 minit ("SECTION", AR_SECTION),
2293 mio_array_ref (gfc_array_ref *ar)
2298 ar->type = MIO_NAME (ar_type) (ar->type, array_ref_types);
2299 mio_integer (&ar->dimen);
2307 for (i = 0; i < ar->dimen; i++)
2308 mio_expr (&ar->start[i]);
2313 for (i = 0; i < ar->dimen; i++)
2315 mio_expr (&ar->start[i]);
2316 mio_expr (&ar->end[i]);
2317 mio_expr (&ar->stride[i]);
2323 gfc_internal_error ("mio_array_ref(): Unknown array ref");
2326 /* Unfortunately, ar->dimen_type is an anonymous enumerated type so
2327 we can't call mio_integer directly. Instead loop over each element
2328 and cast it to/from an integer. */
2329 if (iomode == IO_OUTPUT)
2331 for (i = 0; i < ar->dimen; i++)
2333 int tmp = (int)ar->dimen_type[i];
2334 write_atom (ATOM_INTEGER, &tmp);
2339 for (i = 0; i < ar->dimen; i++)
2341 require_atom (ATOM_INTEGER);
2342 ar->dimen_type[i] = (enum gfc_array_ref_dimen_type) atom_int;
2346 if (iomode == IO_INPUT)
2348 ar->where = gfc_current_locus;
2350 for (i = 0; i < ar->dimen; i++)
2351 ar->c_where[i] = gfc_current_locus;
2358 /* Saves or restores a pointer. The pointer is converted back and
2359 forth from an integer. We return the pointer_info pointer so that
2360 the caller can take additional action based on the pointer type. */
2362 static pointer_info *
2363 mio_pointer_ref (void *gp)
2367 if (iomode == IO_OUTPUT)
2369 p = get_pointer (*((char **) gp));
2370 write_atom (ATOM_INTEGER, &p->integer);
2374 require_atom (ATOM_INTEGER);
2375 p = add_fixup (atom_int, gp);
2382 /* Save and load references to components that occur within
2383 expressions. We have to describe these references by a number and
2384 by name. The number is necessary for forward references during
2385 reading, and the name is necessary if the symbol already exists in
2386 the namespace and is not loaded again. */
2389 mio_component_ref (gfc_component **cp, gfc_symbol *sym)
2391 char name[GFC_MAX_SYMBOL_LEN + 1];
2395 p = mio_pointer_ref (cp);
2396 if (p->type == P_UNKNOWN)
2397 p->type = P_COMPONENT;
2399 if (iomode == IO_OUTPUT)
2400 mio_pool_string (&(*cp)->name);
2403 mio_internal_string (name);
2405 if (sym && sym->attr.is_class)
2406 sym = sym->components->ts.u.derived;
2408 /* It can happen that a component reference can be read before the
2409 associated derived type symbol has been loaded. Return now and
2410 wait for a later iteration of load_needed. */
2414 if (sym->components != NULL && p->u.pointer == NULL)
2416 /* Symbol already loaded, so search by name. */
2417 q = gfc_find_component (sym, name, true, true);
2420 associate_integer_pointer (p, q);
2423 /* Make sure this symbol will eventually be loaded. */
2424 p = find_pointer2 (sym);
2425 if (p->u.rsym.state == UNUSED)
2426 p->u.rsym.state = NEEDED;
2431 static void mio_namespace_ref (gfc_namespace **nsp);
2432 static void mio_formal_arglist (gfc_formal_arglist **formal);
2433 static void mio_typebound_proc (gfc_typebound_proc** proc);
2436 mio_component (gfc_component *c, int vtype)
2440 gfc_formal_arglist *formal;
2444 if (iomode == IO_OUTPUT)
2446 p = get_pointer (c);
2447 mio_integer (&p->integer);
2452 p = get_integer (n);
2453 associate_integer_pointer (p, c);
2456 if (p->type == P_UNKNOWN)
2457 p->type = P_COMPONENT;
2459 mio_pool_string (&c->name);
2460 mio_typespec (&c->ts);
2461 mio_array_spec (&c->as);
2463 mio_symbol_attribute (&c->attr);
2464 if (c->ts.type == BT_CLASS)
2465 c->attr.class_ok = 1;
2466 c->attr.access = MIO_NAME (gfc_access) (c->attr.access, access_types);
2469 mio_expr (&c->initializer);
2471 if (c->attr.proc_pointer)
2473 if (iomode == IO_OUTPUT)
2476 while (formal && !formal->sym)
2477 formal = formal->next;
2480 mio_namespace_ref (&formal->sym->ns);
2482 mio_namespace_ref (&c->formal_ns);
2486 mio_namespace_ref (&c->formal_ns);
2487 /* TODO: if (c->formal_ns)
2489 c->formal_ns->proc_name = c;
2494 mio_formal_arglist (&c->formal);
2496 mio_typebound_proc (&c->tb);
2504 mio_component_list (gfc_component **cp, int vtype)
2506 gfc_component *c, *tail;
2510 if (iomode == IO_OUTPUT)
2512 for (c = *cp; c; c = c->next)
2513 mio_component (c, vtype);
2522 if (peek_atom () == ATOM_RPAREN)
2525 c = gfc_get_component ();
2526 mio_component (c, vtype);
2542 mio_actual_arg (gfc_actual_arglist *a)
2545 mio_pool_string (&a->name);
2546 mio_expr (&a->expr);
2552 mio_actual_arglist (gfc_actual_arglist **ap)
2554 gfc_actual_arglist *a, *tail;
2558 if (iomode == IO_OUTPUT)
2560 for (a = *ap; a; a = a->next)
2570 if (peek_atom () != ATOM_LPAREN)
2573 a = gfc_get_actual_arglist ();
2589 /* Read and write formal argument lists. */
2592 mio_formal_arglist (gfc_formal_arglist **formal)
2594 gfc_formal_arglist *f, *tail;
2598 if (iomode == IO_OUTPUT)
2600 for (f = *formal; f; f = f->next)
2601 mio_symbol_ref (&f->sym);
2605 *formal = tail = NULL;
2607 while (peek_atom () != ATOM_RPAREN)
2609 f = gfc_get_formal_arglist ();
2610 mio_symbol_ref (&f->sym);
2612 if (*formal == NULL)
2625 /* Save or restore a reference to a symbol node. */
2628 mio_symbol_ref (gfc_symbol **symp)
2632 p = mio_pointer_ref (symp);
2633 if (p->type == P_UNKNOWN)
2636 if (iomode == IO_OUTPUT)
2638 if (p->u.wsym.state == UNREFERENCED)
2639 p->u.wsym.state = NEEDS_WRITE;
2643 if (p->u.rsym.state == UNUSED)
2644 p->u.rsym.state = NEEDED;
2650 /* Save or restore a reference to a symtree node. */
2653 mio_symtree_ref (gfc_symtree **stp)
2658 if (iomode == IO_OUTPUT)
2659 mio_symbol_ref (&(*stp)->n.sym);
2662 require_atom (ATOM_INTEGER);
2663 p = get_integer (atom_int);
2665 /* An unused equivalence member; make a symbol and a symtree
2667 if (in_load_equiv && p->u.rsym.symtree == NULL)
2669 /* Since this is not used, it must have a unique name. */
2670 p->u.rsym.symtree = gfc_get_unique_symtree (gfc_current_ns);
2672 /* Make the symbol. */
2673 if (p->u.rsym.sym == NULL)
2675 p->u.rsym.sym = gfc_new_symbol (p->u.rsym.true_name,
2677 p->u.rsym.sym->module = gfc_get_string (p->u.rsym.module);
2680 p->u.rsym.symtree->n.sym = p->u.rsym.sym;
2681 p->u.rsym.symtree->n.sym->refs++;
2682 p->u.rsym.referenced = 1;
2684 /* If the symbol is PRIVATE and in COMMON, load_commons will
2685 generate a fixup symbol, which must be associated. */
2687 resolve_fixups (p->fixup, p->u.rsym.sym);
2691 if (p->type == P_UNKNOWN)
2694 if (p->u.rsym.state == UNUSED)
2695 p->u.rsym.state = NEEDED;
2697 if (p->u.rsym.symtree != NULL)
2699 *stp = p->u.rsym.symtree;
2703 f = XCNEW (fixup_t);
2705 f->next = p->u.rsym.stfixup;
2706 p->u.rsym.stfixup = f;
2708 f->pointer = (void **) stp;
2715 mio_iterator (gfc_iterator **ip)
2721 if (iomode == IO_OUTPUT)
2728 if (peek_atom () == ATOM_RPAREN)
2734 *ip = gfc_get_iterator ();
2739 mio_expr (&iter->var);
2740 mio_expr (&iter->start);
2741 mio_expr (&iter->end);
2742 mio_expr (&iter->step);
2750 mio_constructor (gfc_constructor_base *cp)
2756 if (iomode == IO_OUTPUT)
2758 for (c = gfc_constructor_first (*cp); c; c = gfc_constructor_next (c))
2761 mio_expr (&c->expr);
2762 mio_iterator (&c->iterator);
2768 while (peek_atom () != ATOM_RPAREN)
2770 c = gfc_constructor_append_expr (cp, NULL, NULL);
2773 mio_expr (&c->expr);
2774 mio_iterator (&c->iterator);
2783 static const mstring ref_types[] = {
2784 minit ("ARRAY", REF_ARRAY),
2785 minit ("COMPONENT", REF_COMPONENT),
2786 minit ("SUBSTRING", REF_SUBSTRING),
2792 mio_ref (gfc_ref **rp)
2799 r->type = MIO_NAME (ref_type) (r->type, ref_types);
2804 mio_array_ref (&r->u.ar);
2808 mio_symbol_ref (&r->u.c.sym);
2809 mio_component_ref (&r->u.c.component, r->u.c.sym);
2813 mio_expr (&r->u.ss.start);
2814 mio_expr (&r->u.ss.end);
2815 mio_charlen (&r->u.ss.length);
2824 mio_ref_list (gfc_ref **rp)
2826 gfc_ref *ref, *head, *tail;
2830 if (iomode == IO_OUTPUT)
2832 for (ref = *rp; ref; ref = ref->next)
2839 while (peek_atom () != ATOM_RPAREN)
2842 head = tail = gfc_get_ref ();
2845 tail->next = gfc_get_ref ();
2859 /* Read and write an integer value. */
2862 mio_gmp_integer (mpz_t *integer)
2866 if (iomode == IO_INPUT)
2868 if (parse_atom () != ATOM_STRING)
2869 bad_module ("Expected integer string");
2871 mpz_init (*integer);
2872 if (mpz_set_str (*integer, atom_string, 10))
2873 bad_module ("Error converting integer");
2879 p = mpz_get_str (NULL, 10, *integer);
2880 write_atom (ATOM_STRING, p);
2887 mio_gmp_real (mpfr_t *real)
2892 if (iomode == IO_INPUT)
2894 if (parse_atom () != ATOM_STRING)
2895 bad_module ("Expected real string");
2898 mpfr_set_str (*real, atom_string, 16, GFC_RND_MODE);
2903 p = mpfr_get_str (NULL, &exponent, 16, 0, *real, GFC_RND_MODE);
2905 if (mpfr_nan_p (*real) || mpfr_inf_p (*real))
2907 write_atom (ATOM_STRING, p);
2912 atom_string = XCNEWVEC (char, strlen (p) + 20);
2914 sprintf (atom_string, "0.%s@%ld", p, exponent);
2916 /* Fix negative numbers. */
2917 if (atom_string[2] == '-')
2919 atom_string[0] = '-';
2920 atom_string[1] = '0';
2921 atom_string[2] = '.';
2924 write_atom (ATOM_STRING, atom_string);
2932 /* Save and restore the shape of an array constructor. */
2935 mio_shape (mpz_t **pshape, int rank)
2941 /* A NULL shape is represented by (). */
2944 if (iomode == IO_OUTPUT)
2956 if (t == ATOM_RPAREN)
2963 shape = gfc_get_shape (rank);
2967 for (n = 0; n < rank; n++)
2968 mio_gmp_integer (&shape[n]);
2974 static const mstring expr_types[] = {
2975 minit ("OP", EXPR_OP),
2976 minit ("FUNCTION", EXPR_FUNCTION),
2977 minit ("CONSTANT", EXPR_CONSTANT),
2978 minit ("VARIABLE", EXPR_VARIABLE),
2979 minit ("SUBSTRING", EXPR_SUBSTRING),
2980 minit ("STRUCTURE", EXPR_STRUCTURE),
2981 minit ("ARRAY", EXPR_ARRAY),
2982 minit ("NULL", EXPR_NULL),
2983 minit ("COMPCALL", EXPR_COMPCALL),
2987 /* INTRINSIC_ASSIGN is missing because it is used as an index for
2988 generic operators, not in expressions. INTRINSIC_USER is also
2989 replaced by the correct function name by the time we see it. */
2991 static const mstring intrinsics[] =
2993 minit ("UPLUS", INTRINSIC_UPLUS),
2994 minit ("UMINUS", INTRINSIC_UMINUS),
2995 minit ("PLUS", INTRINSIC_PLUS),
2996 minit ("MINUS", INTRINSIC_MINUS),
2997 minit ("TIMES", INTRINSIC_TIMES),
2998 minit ("DIVIDE", INTRINSIC_DIVIDE),
2999 minit ("POWER", INTRINSIC_POWER),
3000 minit ("CONCAT", INTRINSIC_CONCAT),
3001 minit ("AND", INTRINSIC_AND),
3002 minit ("OR", INTRINSIC_OR),
3003 minit ("EQV", INTRINSIC_EQV),
3004 minit ("NEQV", INTRINSIC_NEQV),
3005 minit ("EQ_SIGN", INTRINSIC_EQ),
3006 minit ("EQ", INTRINSIC_EQ_OS),
3007 minit ("NE_SIGN", INTRINSIC_NE),
3008 minit ("NE", INTRINSIC_NE_OS),
3009 minit ("GT_SIGN", INTRINSIC_GT),
3010 minit ("GT", INTRINSIC_GT_OS),
3011 minit ("GE_SIGN", INTRINSIC_GE),
3012 minit ("GE", INTRINSIC_GE_OS),
3013 minit ("LT_SIGN", INTRINSIC_LT),
3014 minit ("LT", INTRINSIC_LT_OS),
3015 minit ("LE_SIGN", INTRINSIC_LE),
3016 minit ("LE", INTRINSIC_LE_OS),
3017 minit ("NOT", INTRINSIC_NOT),
3018 minit ("PARENTHESES", INTRINSIC_PARENTHESES),
3023 /* Remedy a couple of situations where the gfc_expr's can be defective. */
3026 fix_mio_expr (gfc_expr *e)
3028 gfc_symtree *ns_st = NULL;
3031 if (iomode != IO_OUTPUT)
3036 /* If this is a symtree for a symbol that came from a contained module
3037 namespace, it has a unique name and we should look in the current
3038 namespace to see if the required, non-contained symbol is available
3039 yet. If so, the latter should be written. */
3040 if (e->symtree->n.sym && check_unique_name (e->symtree->name))
3042 const char *name = e->symtree->n.sym->name;
3043 if (e->symtree->n.sym->attr.flavor == FL_DERIVED)
3044 name = dt_upper_string (name);
3045 ns_st = gfc_find_symtree (gfc_current_ns->sym_root, name);
3048 /* On the other hand, if the existing symbol is the module name or the
3049 new symbol is a dummy argument, do not do the promotion. */
3050 if (ns_st && ns_st->n.sym
3051 && ns_st->n.sym->attr.flavor != FL_MODULE
3052 && !e->symtree->n.sym->attr.dummy)
3055 else if (e->expr_type == EXPR_FUNCTION && e->value.function.name)
3059 /* In some circumstances, a function used in an initialization
3060 expression, in one use associated module, can fail to be
3061 coupled to its symtree when used in a specification
3062 expression in another module. */
3063 fname = e->value.function.esym ? e->value.function.esym->name
3064 : e->value.function.isym->name;
3065 e->symtree = gfc_find_symtree (gfc_current_ns->sym_root, fname);
3070 /* This is probably a reference to a private procedure from another
3071 module. To prevent a segfault, make a generic with no specific
3072 instances. If this module is used, without the required
3073 specific coming from somewhere, the appropriate error message
3075 gfc_get_symbol (fname, gfc_current_ns, &sym);
3076 sym->attr.flavor = FL_PROCEDURE;
3077 sym->attr.generic = 1;
3078 e->symtree = gfc_find_symtree (gfc_current_ns->sym_root, fname);
3079 gfc_commit_symbol (sym);
3084 /* Read and write expressions. The form "()" is allowed to indicate a
3088 mio_expr (gfc_expr **ep)
3096 if (iomode == IO_OUTPUT)
3105 MIO_NAME (expr_t) (e->expr_type, expr_types);
3110 if (t == ATOM_RPAREN)
3117 bad_module ("Expected expression type");
3119 e = *ep = gfc_get_expr ();
3120 e->where = gfc_current_locus;
3121 e->expr_type = (expr_t) find_enum (expr_types);
3124 mio_typespec (&e->ts);
3125 mio_integer (&e->rank);
3129 switch (e->expr_type)
3133 = MIO_NAME (gfc_intrinsic_op) (e->value.op.op, intrinsics);
3135 switch (e->value.op.op)
3137 case INTRINSIC_UPLUS:
3138 case INTRINSIC_UMINUS:
3140 case INTRINSIC_PARENTHESES:
3141 mio_expr (&e->value.op.op1);
3144 case INTRINSIC_PLUS:
3145 case INTRINSIC_MINUS:
3146 case INTRINSIC_TIMES:
3147 case INTRINSIC_DIVIDE:
3148 case INTRINSIC_POWER:
3149 case INTRINSIC_CONCAT:
3153 case INTRINSIC_NEQV:
3155 case INTRINSIC_EQ_OS:
3157 case INTRINSIC_NE_OS:
3159 case INTRINSIC_GT_OS:
3161 case INTRINSIC_GE_OS:
3163 case INTRINSIC_LT_OS:
3165 case INTRINSIC_LE_OS:
3166 mio_expr (&e->value.op.op1);
3167 mio_expr (&e->value.op.op2);
3171 bad_module ("Bad operator");
3177 mio_symtree_ref (&e->symtree);
3178 mio_actual_arglist (&e->value.function.actual);
3180 if (iomode == IO_OUTPUT)
3182 e->value.function.name
3183 = mio_allocated_string (e->value.function.name);
3184 flag = e->value.function.esym != NULL;
3185 mio_integer (&flag);
3187 mio_symbol_ref (&e->value.function.esym);
3189 write_atom (ATOM_STRING, e->value.function.isym->name);
3193 require_atom (ATOM_STRING);
3194 e->value.function.name = gfc_get_string (atom_string);
3197 mio_integer (&flag);
3199 mio_symbol_ref (&e->value.function.esym);
3202 require_atom (ATOM_STRING);
3203 e->value.function.isym = gfc_find_function (atom_string);
3211 mio_symtree_ref (&e->symtree);
3212 mio_ref_list (&e->ref);
3215 case EXPR_SUBSTRING:
3216 e->value.character.string
3217 = CONST_CAST (gfc_char_t *,
3218 mio_allocated_wide_string (e->value.character.string,
3219 e->value.character.length));
3220 mio_ref_list (&e->ref);
3223 case EXPR_STRUCTURE:
3225 mio_constructor (&e->value.constructor);
3226 mio_shape (&e->shape, e->rank);
3233 mio_gmp_integer (&e->value.integer);
3237 gfc_set_model_kind (e->ts.kind);
3238 mio_gmp_real (&e->value.real);
3242 gfc_set_model_kind (e->ts.kind);
3243 mio_gmp_real (&mpc_realref (e->value.complex));
3244 mio_gmp_real (&mpc_imagref (e->value.complex));
3248 mio_integer (&e->value.logical);
3252 mio_integer (&e->value.character.length);
3253 e->value.character.string
3254 = CONST_CAST (gfc_char_t *,
3255 mio_allocated_wide_string (e->value.character.string,
3256 e->value.character.length));
3260 bad_module ("Bad type in constant expression");
3278 /* Read and write namelists. */
3281 mio_namelist (gfc_symbol *sym)
3283 gfc_namelist *n, *m;
3284 const char *check_name;
3288 if (iomode == IO_OUTPUT)
3290 for (n = sym->namelist; n; n = n->next)
3291 mio_symbol_ref (&n->sym);
3295 /* This departure from the standard is flagged as an error.
3296 It does, in fact, work correctly. TODO: Allow it
3298 if (sym->attr.flavor == FL_NAMELIST)
3300 check_name = find_use_name (sym->name, false);
3301 if (check_name && strcmp (check_name, sym->name) != 0)
3302 gfc_error ("Namelist %s cannot be renamed by USE "
3303 "association to %s", sym->name, check_name);
3307 while (peek_atom () != ATOM_RPAREN)
3309 n = gfc_get_namelist ();
3310 mio_symbol_ref (&n->sym);
3312 if (sym->namelist == NULL)
3319 sym->namelist_tail = m;
3326 /* Save/restore lists of gfc_interface structures. When loading an
3327 interface, we are really appending to the existing list of
3328 interfaces. Checking for duplicate and ambiguous interfaces has to
3329 be done later when all symbols have been loaded. */
3332 mio_interface_rest (gfc_interface **ip)
3334 gfc_interface *tail, *p;
3335 pointer_info *pi = NULL;
3337 if (iomode == IO_OUTPUT)
3340 for (p = *ip; p; p = p->next)
3341 mio_symbol_ref (&p->sym);
3356 if (peek_atom () == ATOM_RPAREN)
3359 p = gfc_get_interface ();
3360 p->where = gfc_current_locus;
3361 pi = mio_symbol_ref (&p->sym);
3377 /* Save/restore a nameless operator interface. */
3380 mio_interface (gfc_interface **ip)
3383 mio_interface_rest (ip);
3387 /* Save/restore a named operator interface. */
3390 mio_symbol_interface (const char **name, const char **module,
3394 mio_pool_string (name);
3395 mio_pool_string (module);
3396 mio_interface_rest (ip);
3401 mio_namespace_ref (gfc_namespace **nsp)
3406 p = mio_pointer_ref (nsp);
3408 if (p->type == P_UNKNOWN)
3409 p->type = P_NAMESPACE;
3411 if (iomode == IO_INPUT && p->integer != 0)
3413 ns = (gfc_namespace *) p->u.pointer;
3416 ns = gfc_get_namespace (NULL, 0);
3417 associate_integer_pointer (p, ns);
3425 /* Save/restore the f2k_derived namespace of a derived-type symbol. */
3427 static gfc_namespace* current_f2k_derived;
3430 mio_typebound_proc (gfc_typebound_proc** proc)
3433 int overriding_flag;
3435 if (iomode == IO_INPUT)
3437 *proc = gfc_get_typebound_proc (NULL);
3438 (*proc)->where = gfc_current_locus;
3444 (*proc)->access = MIO_NAME (gfc_access) ((*proc)->access, access_types);
3446 /* IO the NON_OVERRIDABLE/DEFERRED combination. */
3447 gcc_assert (!((*proc)->deferred && (*proc)->non_overridable));
3448 overriding_flag = ((*proc)->deferred << 1) | (*proc)->non_overridable;
3449 overriding_flag = mio_name (overriding_flag, binding_overriding);
3450 (*proc)->deferred = ((overriding_flag & 2) != 0);
3451 (*proc)->non_overridable = ((overriding_flag & 1) != 0);
3452 gcc_assert (!((*proc)->deferred && (*proc)->non_overridable));
3454 (*proc)->nopass = mio_name ((*proc)->nopass, binding_passing);
3455 (*proc)->is_generic = mio_name ((*proc)->is_generic, binding_generic);
3456 (*proc)->ppc = mio_name((*proc)->ppc, binding_ppc);
3458 mio_pool_string (&((*proc)->pass_arg));
3460 flag = (int) (*proc)->pass_arg_num;
3461 mio_integer (&flag);
3462 (*proc)->pass_arg_num = (unsigned) flag;
3464 if ((*proc)->is_generic)
3470 if (iomode == IO_OUTPUT)
3471 for (g = (*proc)->u.generic; g; g = g->next)
3472 mio_allocated_string (g->specific_st->name);
3475 (*proc)->u.generic = NULL;
3476 while (peek_atom () != ATOM_RPAREN)
3478 gfc_symtree** sym_root;
3480 g = gfc_get_tbp_generic ();
3483 require_atom (ATOM_STRING);
3484 sym_root = ¤t_f2k_derived->tb_sym_root;
3485 g->specific_st = gfc_get_tbp_symtree (sym_root, atom_string);
3488 g->next = (*proc)->u.generic;
3489 (*proc)->u.generic = g;
3495 else if (!(*proc)->ppc)
3496 mio_symtree_ref (&(*proc)->u.specific);
3501 /* Walker-callback function for this purpose. */
3503 mio_typebound_symtree (gfc_symtree* st)
3505 if (iomode == IO_OUTPUT && !st->n.tb)
3508 if (iomode == IO_OUTPUT)
3511 mio_allocated_string (st->name);
3513 /* For IO_INPUT, the above is done in mio_f2k_derived. */
3515 mio_typebound_proc (&st->n.tb);
3519 /* IO a full symtree (in all depth). */
3521 mio_full_typebound_tree (gfc_symtree** root)
3525 if (iomode == IO_OUTPUT)
3526 gfc_traverse_symtree (*root, &mio_typebound_symtree);
3529 while (peek_atom () == ATOM_LPAREN)
3535 require_atom (ATOM_STRING);
3536 st = gfc_get_tbp_symtree (root, atom_string);
3539 mio_typebound_symtree (st);
3547 mio_finalizer (gfc_finalizer **f)
3549 if (iomode == IO_OUTPUT)
3552 gcc_assert ((*f)->proc_tree); /* Should already be resolved. */
3553 mio_symtree_ref (&(*f)->proc_tree);
3557 *f = gfc_get_finalizer ();
3558 (*f)->where = gfc_current_locus; /* Value should not matter. */
3561 mio_symtree_ref (&(*f)->proc_tree);
3562 (*f)->proc_sym = NULL;
3567 mio_f2k_derived (gfc_namespace *f2k)
3569 current_f2k_derived = f2k;
3571 /* Handle the list of finalizer procedures. */
3573 if (iomode == IO_OUTPUT)
3576 for (f = f2k->finalizers; f; f = f->next)
3581 f2k->finalizers = NULL;
3582 while (peek_atom () != ATOM_RPAREN)
3584 gfc_finalizer *cur = NULL;
3585 mio_finalizer (&cur);
3586 cur->next = f2k->finalizers;
3587 f2k->finalizers = cur;
3592 /* Handle type-bound procedures. */
3593 mio_full_typebound_tree (&f2k->tb_sym_root);
3595 /* Type-bound user operators. */
3596 mio_full_typebound_tree (&f2k->tb_uop_root);
3598 /* Type-bound intrinsic operators. */
3600 if (iomode == IO_OUTPUT)
3603 for (op = GFC_INTRINSIC_BEGIN; op != GFC_INTRINSIC_END; ++op)
3605 gfc_intrinsic_op realop;
3607 if (op == INTRINSIC_USER || !f2k->tb_op[op])
3611 realop = (gfc_intrinsic_op) op;
3612 mio_intrinsic_op (&realop);
3613 mio_typebound_proc (&f2k->tb_op[op]);
3618 while (peek_atom () != ATOM_RPAREN)
3620 gfc_intrinsic_op op = GFC_INTRINSIC_BEGIN; /* Silence GCC. */
3623 mio_intrinsic_op (&op);
3624 mio_typebound_proc (&f2k->tb_op[op]);
3631 mio_full_f2k_derived (gfc_symbol *sym)
3635 if (iomode == IO_OUTPUT)
3637 if (sym->f2k_derived)
3638 mio_f2k_derived (sym->f2k_derived);
3642 if (peek_atom () != ATOM_RPAREN)
3644 sym->f2k_derived = gfc_get_namespace (NULL, 0);
3645 mio_f2k_derived (sym->f2k_derived);
3648 gcc_assert (!sym->f2k_derived);
3655 /* Unlike most other routines, the address of the symbol node is already
3656 fixed on input and the name/module has already been filled in. */
3659 mio_symbol (gfc_symbol *sym)
3661 int intmod = INTMOD_NONE;
3665 mio_symbol_attribute (&sym->attr);
3666 mio_typespec (&sym->ts);
3667 if (sym->ts.type == BT_CLASS)
3668 sym->attr.class_ok = 1;
3670 if (iomode == IO_OUTPUT)
3671 mio_namespace_ref (&sym->formal_ns);
3674 mio_namespace_ref (&sym->formal_ns);
3677 sym->formal_ns->proc_name = sym;
3682 /* Save/restore common block links. */
3683 mio_symbol_ref (&sym->common_next);
3685 mio_formal_arglist (&sym->formal);
3687 if (sym->attr.flavor == FL_PARAMETER)
3688 mio_expr (&sym->value);
3690 mio_array_spec (&sym->as);
3692 mio_symbol_ref (&sym->result);
3694 if (sym->attr.cray_pointee)
3695 mio_symbol_ref (&sym->cp_pointer);
3697 /* Note that components are always saved, even if they are supposed
3698 to be private. Component access is checked during searching. */
3700 mio_component_list (&sym->components, sym->attr.vtype);
3702 if (sym->components != NULL)
3703 sym->component_access
3704 = MIO_NAME (gfc_access) (sym->component_access, access_types);
3706 /* Load/save the f2k_derived namespace of a derived-type symbol. */
3707 mio_full_f2k_derived (sym);
3711 /* Add the fields that say whether this is from an intrinsic module,
3712 and if so, what symbol it is within the module. */
3713 /* mio_integer (&(sym->from_intmod)); */
3714 if (iomode == IO_OUTPUT)
3716 intmod = sym->from_intmod;
3717 mio_integer (&intmod);
3721 mio_integer (&intmod);
3722 sym->from_intmod = (intmod_id) intmod;
3725 mio_integer (&(sym->intmod_sym_id));
3727 if (sym->attr.flavor == FL_DERIVED)
3728 mio_integer (&(sym->hash_value));
3734 /************************* Top level subroutines *************************/
3736 /* Given a root symtree node and a symbol, try to find a symtree that
3737 references the symbol that is not a unique name. */
3739 static gfc_symtree *
3740 find_symtree_for_symbol (gfc_symtree *st, gfc_symbol *sym)
3742 gfc_symtree *s = NULL;
3747 s = find_symtree_for_symbol (st->right, sym);
3750 s = find_symtree_for_symbol (st->left, sym);
3754 if (st->n.sym == sym && !check_unique_name (st->name))
3761 /* A recursive function to look for a specific symbol by name and by
3762 module. Whilst several symtrees might point to one symbol, its
3763 is sufficient for the purposes here than one exist. Note that
3764 generic interfaces are distinguished as are symbols that have been
3765 renamed in another module. */
3766 static gfc_symtree *
3767 find_symbol (gfc_symtree *st, const char *name,
3768 const char *module, int generic)
3771 gfc_symtree *retval, *s;
3773 if (st == NULL || st->n.sym == NULL)
3776 c = strcmp (name, st->n.sym->name);
3777 if (c == 0 && st->n.sym->module
3778 && strcmp (module, st->n.sym->module) == 0
3779 && !check_unique_name (st->name))
3781 s = gfc_find_symtree (gfc_current_ns->sym_root, name);
3783 /* Detect symbols that are renamed by use association in another
3784 module by the absence of a symtree and null attr.use_rename,
3785 since the latter is not transmitted in the module file. */
3786 if (((!generic && !st->n.sym->attr.generic)
3787 || (generic && st->n.sym->attr.generic))
3788 && !(s == NULL && !st->n.sym->attr.use_rename))
3792 retval = find_symbol (st->left, name, module, generic);
3795 retval = find_symbol (st->right, name, module, generic);
3801 /* Skip a list between balanced left and right parens. */
3811 switch (parse_atom ())
3834 /* Load operator interfaces from the module. Interfaces are unusual
3835 in that they attach themselves to existing symbols. */
3838 load_operator_interfaces (void)
3841 char name[GFC_MAX_SYMBOL_LEN + 1], module[GFC_MAX_SYMBOL_LEN + 1];
3843 pointer_info *pi = NULL;
3848 while (peek_atom () != ATOM_RPAREN)
3852 mio_internal_string (name);
3853 mio_internal_string (module);
3855 n = number_use_names (name, true);
3858 for (i = 1; i <= n; i++)
3860 /* Decide if we need to load this one or not. */
3861 p = find_use_name_n (name, &i, true);
3865 while (parse_atom () != ATOM_RPAREN);
3871 uop = gfc_get_uop (p);
3872 pi = mio_interface_rest (&uop->op);
3876 if (gfc_find_uop (p, NULL))
3878 uop = gfc_get_uop (p);
3879 uop->op = gfc_get_interface ();
3880 uop->op->where = gfc_current_locus;
3881 add_fixup (pi->integer, &uop->op->sym);
3890 /* Load interfaces from the module. Interfaces are unusual in that
3891 they attach themselves to existing symbols. */
3894 load_generic_interfaces (void)
3897 char name[GFC_MAX_SYMBOL_LEN + 1], module[GFC_MAX_SYMBOL_LEN + 1];
3899 gfc_interface *generic = NULL, *gen = NULL;
3901 bool ambiguous_set = false;
3905 while (peek_atom () != ATOM_RPAREN)
3909 mio_internal_string (name);
3910 mio_internal_string (module);
3912 n = number_use_names (name, false);
3913 renamed = n ? 1 : 0;
3916 for (i = 1; i <= n; i++)
3919 /* Decide if we need to load this one or not. */
3920 p = find_use_name_n (name, &i, false);
3922 st = find_symbol (gfc_current_ns->sym_root,
3923 name, module_name, 1);
3925 if (!p || gfc_find_symbol (p, NULL, 0, &sym))
3927 /* Skip the specific names for these cases. */
3928 while (i == 1 && parse_atom () != ATOM_RPAREN);
3933 /* If the symbol exists already and is being USEd without being
3934 in an ONLY clause, do not load a new symtree(11.3.2). */
3935 if (!only_flag && st)
3940 /* Make the symbol inaccessible if it has been added by a USE
3941 statement without an ONLY(11.3.2). */
3943 && !st->n.sym->attr.use_only
3944 && !st->n.sym->attr.use_rename
3945 && strcmp (st->n.sym->module, module_name) == 0)
3948 gfc_delete_symtree (&gfc_current_ns->sym_root, name);
3949 st = gfc_get_unique_symtree (gfc_current_ns);
3956 if (strcmp (st->name, p) != 0)
3958 st = gfc_new_symtree (&gfc_current_ns->sym_root, p);
3964 /* Since we haven't found a valid generic interface, we had
3968 gfc_get_symbol (p, NULL, &sym);
3969 sym->name = gfc_get_string (name);
3970 sym->module = gfc_get_string (module_name);
3971 sym->attr.flavor = FL_PROCEDURE;
3972 sym->attr.generic = 1;
3973 sym->attr.use_assoc = 1;
3978 /* Unless sym is a generic interface, this reference
3981 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
3985 if (st && !sym->attr.generic
3988 && strcmp(module, sym->module))
3990 ambiguous_set = true;
3995 sym->attr.use_only = only_flag;
3996 sym->attr.use_rename = renamed;
4000 mio_interface_rest (&sym->generic);
4001 generic = sym->generic;
4003 else if (!sym->generic)
4005 sym->generic = generic;
4006 sym->attr.generic_copy = 1;
4009 /* If a procedure that is not generic has generic interfaces
4010 that include itself, it is generic! We need to take care
4011 to retain symbols ambiguous that were already so. */
4012 if (sym->attr.use_assoc
4013 && !sym->attr.generic
4014 && sym->attr.flavor == FL_PROCEDURE)
4016 for (gen = generic; gen; gen = gen->next)
4018 if (gen->sym == sym)
4020 sym->attr.generic = 1;
4035 /* Load common blocks. */
4040 char name[GFC_MAX_SYMBOL_LEN + 1];
4045 while (peek_atom () != ATOM_RPAREN)
4049 mio_internal_string (name);
4051 p = gfc_get_common (name, 1);
4053 mio_symbol_ref (&p->head);
4054 mio_integer (&flags);
4058 p->threadprivate = 1;
4061 /* Get whether this was a bind(c) common or not. */
4062 mio_integer (&p->is_bind_c);
4063 /* Get the binding label. */
4064 mio_internal_string (p->binding_label);
4073 /* Load equivalences. The flag in_load_equiv informs mio_expr_ref of this
4074 so that unused variables are not loaded and so that the expression can
4080 gfc_equiv *head, *tail, *end, *eq;
4084 in_load_equiv = true;
4086 end = gfc_current_ns->equiv;
4087 while (end != NULL && end->next != NULL)
4090 while (peek_atom () != ATOM_RPAREN) {
4094 while(peek_atom () != ATOM_RPAREN)
4097 head = tail = gfc_get_equiv ();
4100 tail->eq = gfc_get_equiv ();
4104 mio_pool_string (&tail->module);
4105 mio_expr (&tail->expr);
4108 /* Unused equivalence members have a unique name. In addition, it
4109 must be checked that the symbols are from the same module. */
4111 for (eq = head; eq; eq = eq->eq)
4113 if (eq->expr->symtree->n.sym->module
4114 && head->expr->symtree->n.sym->module
4115 && strcmp (head->expr->symtree->n.sym->module,
4116 eq->expr->symtree->n.sym->module) == 0
4117 && !check_unique_name (eq->expr->symtree->name))
4126 for (eq = head; eq; eq = head)
4129 gfc_free_expr (eq->expr);
4135 gfc_current_ns->equiv = head;
4146 in_load_equiv = false;
4150 /* This function loads the sym_root of f2k_derived with the extensions to
4151 the derived type. */
4153 load_derived_extensions (void)
4156 gfc_symbol *derived;
4160 char name[GFC_MAX_SYMBOL_LEN + 1];
4161 char module[GFC_MAX_SYMBOL_LEN + 1];
4165 while (peek_atom () != ATOM_RPAREN)
4168 mio_integer (&symbol);
4169 info = get_integer (symbol);
4170 derived = info->u.rsym.sym;
4172 /* This one is not being loaded. */
4173 if (!info || !derived)
4175 while (peek_atom () != ATOM_RPAREN)
4180 gcc_assert (derived->attr.flavor == FL_DERIVED);
4181 if (derived->f2k_derived == NULL)
4182 derived->f2k_derived = gfc_get_namespace (NULL, 0);
4184 while (peek_atom () != ATOM_RPAREN)
4187 mio_internal_string (name);
4188 mio_internal_string (module);
4190 /* Only use one use name to find the symbol. */
4192 p = find_use_name_n (name, &j, false);
4195 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
4197 st = gfc_find_symtree (derived->f2k_derived->sym_root, name);
4200 /* Only use the real name in f2k_derived to ensure a single
4202 st = gfc_new_symtree (&derived->f2k_derived->sym_root, name);
4215 /* Recursive function to traverse the pointer_info tree and load a
4216 needed symbol. We return nonzero if we load a symbol and stop the
4217 traversal, because the act of loading can alter the tree. */
4220 load_needed (pointer_info *p)
4231 rv |= load_needed (p->left);
4232 rv |= load_needed (p->right);
4234 if (p->type != P_SYMBOL || p->u.rsym.state != NEEDED)
4237 p->u.rsym.state = USED;
4239 set_module_locus (&p->u.rsym.where);
4241 sym = p->u.rsym.sym;
4244 q = get_integer (p->u.rsym.ns);
4246 ns = (gfc_namespace *) q->u.pointer;
4249 /* Create an interface namespace if necessary. These are
4250 the namespaces that hold the formal parameters of module
4253 ns = gfc_get_namespace (NULL, 0);
4254 associate_integer_pointer (q, ns);
4257 /* Use the module sym as 'proc_name' so that gfc_get_symbol_decl
4258 doesn't go pear-shaped if the symbol is used. */
4260 gfc_find_symbol (p->u.rsym.module, gfc_current_ns,
4263 sym = gfc_new_symbol (p->u.rsym.true_name, ns);
4264 sym->name = dt_lower_string (p->u.rsym.true_name);
4265 sym->module = gfc_get_string (p->u.rsym.module);
4266 strcpy (sym->binding_label, p->u.rsym.binding_label);
4268 associate_integer_pointer (p, sym);
4272 sym->attr.use_assoc = 1;
4274 sym->attr.use_only = 1;
4275 if (p->u.rsym.renamed)
4276 sym->attr.use_rename = 1;
4282 /* Recursive function for cleaning up things after a module has been read. */
4285 read_cleanup (pointer_info *p)
4293 read_cleanup (p->left);
4294 read_cleanup (p->right);
4296 if (p->type == P_SYMBOL && p->u.rsym.state == USED && !p->u.rsym.referenced)
4299 /* Add hidden symbols to the symtree. */
4300 q = get_integer (p->u.rsym.ns);
4301 ns = (gfc_namespace *) q->u.pointer;
4303 if (!p->u.rsym.sym->attr.vtype
4304 && !p->u.rsym.sym->attr.vtab)
4305 st = gfc_get_unique_symtree (ns);
4308 /* There is no reason to use 'unique_symtrees' for vtabs or
4309 vtypes - their name is fine for a symtree and reduces the
4310 namespace pollution. */
4311 st = gfc_find_symtree (ns->sym_root, p->u.rsym.sym->name);
4313 st = gfc_new_symtree (&ns->sym_root, p->u.rsym.sym->name);
4316 st->n.sym = p->u.rsym.sym;
4319 /* Fixup any symtree references. */
4320 p->u.rsym.symtree = st;
4321 resolve_fixups (p->u.rsym.stfixup, st);
4322 p->u.rsym.stfixup = NULL;
4325 /* Free unused symbols. */
4326 if (p->type == P_SYMBOL && p->u.rsym.state == UNUSED)
4327 gfc_free_symbol (p->u.rsym.sym);
4331 /* It is not quite enough to check for ambiguity in the symbols by
4332 the loaded symbol and the new symbol not being identical. */
4334 check_for_ambiguous (gfc_symbol *st_sym, pointer_info *info)
4338 symbol_attribute attr;
4340 if (st_sym->ns->proc_name && st_sym->name == st_sym->ns->proc_name->name)
4342 gfc_error ("'%s' of module '%s', imported at %C, is also the name of the "
4343 "current program unit", st_sym->name, module_name);
4347 rsym = info->u.rsym.sym;
4351 if (st_sym->attr.vtab || st_sym->attr.vtype)
4354 /* If the existing symbol is generic from a different module and
4355 the new symbol is generic there can be no ambiguity. */
4356 if (st_sym->attr.generic
4358 && strcmp (st_sym->module, module_name))
4360 /* The new symbol's attributes have not yet been read. Since
4361 we need attr.generic, read it directly. */
4362 get_module_locus (&locus);
4363 set_module_locus (&info->u.rsym.where);
4366 mio_symbol_attribute (&attr);
4367 set_module_locus (&locus);
4376 /* Read a module file. */
4381 module_locus operator_interfaces, user_operators, extensions;
4383 char name[GFC_MAX_SYMBOL_LEN + 1];
4385 int ambiguous, j, nuse, symbol;
4386 pointer_info *info, *q;
4391 get_module_locus (&operator_interfaces); /* Skip these for now. */
4394 get_module_locus (&user_operators);
4398 /* Skip commons, equivalences and derived type extensions for now. */
4402 get_module_locus (&extensions);
4407 /* Create the fixup nodes for all the symbols. */
4409 while (peek_atom () != ATOM_RPAREN)
4411 require_atom (ATOM_INTEGER);
4412 info = get_integer (atom_int);
4414 info->type = P_SYMBOL;
4415 info->u.rsym.state = UNUSED;
4417 mio_internal_string (info->u.rsym.true_name);
4418 mio_internal_string (info->u.rsym.module);
4419 mio_internal_string (info->u.rsym.binding_label);
4422 require_atom (ATOM_INTEGER);
4423 info->u.rsym.ns = atom_int;
4425 get_module_locus (&info->u.rsym.where);
4428 /* See if the symbol has already been loaded by a previous module.
4429 If so, we reference the existing symbol and prevent it from
4430 being loaded again. This should not happen if the symbol being
4431 read is an index for an assumed shape dummy array (ns != 1). */
4433 sym = find_true_name (info->u.rsym.true_name, info->u.rsym.module);
4436 || (sym->attr.flavor == FL_VARIABLE && info->u.rsym.ns !=1))
4439 info->u.rsym.state = USED;
4440 info->u.rsym.sym = sym;
4442 /* Some symbols do not have a namespace (eg. formal arguments),
4443 so the automatic "unique symtree" mechanism must be suppressed
4444 by marking them as referenced. */
4445 q = get_integer (info->u.rsym.ns);
4446 if (q->u.pointer == NULL)
4448 info->u.rsym.referenced = 1;
4452 /* If possible recycle the symtree that references the symbol.
4453 If a symtree is not found and the module does not import one,
4454 a unique-name symtree is found by read_cleanup. */
4455 st = find_symtree_for_symbol (gfc_current_ns->sym_root, sym);
4458 info->u.rsym.symtree = st;
4459 info->u.rsym.referenced = 1;
4465 /* Parse the symtree lists. This lets us mark which symbols need to
4466 be loaded. Renaming is also done at this point by replacing the
4471 while (peek_atom () != ATOM_RPAREN)
4473 mio_internal_string (name);
4474 mio_integer (&ambiguous);
4475 mio_integer (&symbol);
4477 info = get_integer (symbol);
4479 /* See how many use names there are. If none, go through the start
4480 of the loop at least once. */
4481 nuse = number_use_names (name, false);
4482 info->u.rsym.renamed = nuse ? 1 : 0;
4487 for (j = 1; j <= nuse; j++)
4489 /* Get the jth local name for this symbol. */
4490 p = find_use_name_n (name, &j, false);
4492 if (p == NULL && strcmp (name, module_name) == 0)
4495 /* Exception: Always import vtabs & vtypes. */
4496 if (p == NULL && (strncmp (name, "__vtab_", 5) == 0
4497 || strncmp (name, "__vtype_", 6) == 0))
4500 /* Skip symtree nodes not in an ONLY clause, unless there
4501 is an existing symtree loaded from another USE statement. */
4504 st = gfc_find_symtree (gfc_current_ns->sym_root, name);
4506 info->u.rsym.symtree = st;
4510 /* If a symbol of the same name and module exists already,
4511 this symbol, which is not in an ONLY clause, must not be
4512 added to the namespace(11.3.2). Note that find_symbol
4513 only returns the first occurrence that it finds. */
4514 if (!only_flag && !info->u.rsym.renamed
4515 && strcmp (name, module_name) != 0
4516 && find_symbol (gfc_current_ns->sym_root, name,
4520 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
4524 /* Check for ambiguous symbols. */
4525 if (check_for_ambiguous (st->n.sym, info))
4527 info->u.rsym.symtree = st;
4531 st = gfc_find_symtree (gfc_current_ns->sym_root, name);
4533 /* Delete the symtree if the symbol has been added by a USE
4534 statement without an ONLY(11.3.2). Remember that the rsym
4535 will be the same as the symbol found in the symtree, for
4537 if (st && (only_flag || info->u.rsym.renamed)
4538 && !st->n.sym->attr.use_only
4539 && !st->n.sym->attr.use_rename
4540 && info->u.rsym.sym == st->n.sym)
4541 gfc_delete_symtree (&gfc_current_ns->sym_root, name);
4543 /* Create a symtree node in the current namespace for this
4545 st = check_unique_name (p)
4546 ? gfc_get_unique_symtree (gfc_current_ns)
4547 : gfc_new_symtree (&gfc_current_ns->sym_root, p);
4548 st->ambiguous = ambiguous;
4550 sym = info->u.rsym.sym;
4552 /* Create a symbol node if it doesn't already exist. */
4555 info->u.rsym.sym = gfc_new_symbol (info->u.rsym.true_name,
4557 info->u.rsym.sym->name = dt_lower_string (info->u.rsym.true_name);
4558 sym = info->u.rsym.sym;
4559 sym->module = gfc_get_string (info->u.rsym.module);
4561 /* TODO: hmm, can we test this? Do we know it will be
4562 initialized to zeros? */
4563 if (info->u.rsym.binding_label[0] != '\0')
4564 strcpy (sym->binding_label, info->u.rsym.binding_label);
4570 if (strcmp (name, p) != 0)
4571 sym->attr.use_rename = 1;
4573 /* We need to set the only_flag here so that symbols from the
4574 same USE...ONLY but earlier are not deleted from the tree in
4575 the gfc_delete_symtree above. */
4576 sym->attr.use_only = only_flag;
4578 /* Store the symtree pointing to this symbol. */
4579 info->u.rsym.symtree = st;
4581 if (info->u.rsym.state == UNUSED)
4582 info->u.rsym.state = NEEDED;
4583 info->u.rsym.referenced = 1;
4590 /* Load intrinsic operator interfaces. */
4591 set_module_locus (&operator_interfaces);
4594 for (i = GFC_INTRINSIC_BEGIN; i != GFC_INTRINSIC_END; i++)
4596 if (i == INTRINSIC_USER)
4601 u = find_use_operator ((gfc_intrinsic_op) i);
4612 mio_interface (&gfc_current_ns->op[i]);
4617 /* Load generic and user operator interfaces. These must follow the
4618 loading of symtree because otherwise symbols can be marked as
4621 set_module_locus (&user_operators);
4623 load_operator_interfaces ();
4624 load_generic_interfaces ();
4629 /* At this point, we read those symbols that are needed but haven't
4630 been loaded yet. If one symbol requires another, the other gets
4631 marked as NEEDED if its previous state was UNUSED. */
4633 while (load_needed (pi_root));
4635 /* Make sure all elements of the rename-list were found in the module. */
4637 for (u = gfc_rename_list; u; u = u->next)
4642 if (u->op == INTRINSIC_NONE)
4644 gfc_error ("Symbol '%s' referenced at %L not found in module '%s'",
4645 u->use_name, &u->where, module_name);
4649 if (u->op == INTRINSIC_USER)
4651 gfc_error ("User operator '%s' referenced at %L not found "
4652 "in module '%s'", u->use_name, &u->where, module_name);
4656 gfc_error ("Intrinsic operator '%s' referenced at %L not found "
4657 "in module '%s'", gfc_op2string (u->op), &u->where,
4661 /* Now we should be in a position to fill f2k_derived with derived type
4662 extensions, since everything has been loaded. */
4663 set_module_locus (&extensions);
4664 load_derived_extensions ();
4666 /* Clean up symbol nodes that were never loaded, create references
4667 to hidden symbols. */
4669 read_cleanup (pi_root);
4673 /* Given an access type that is specific to an entity and the default
4674 access, return nonzero if the entity is publicly accessible. If the
4675 element is declared as PUBLIC, then it is public; if declared
4676 PRIVATE, then private, and otherwise it is public unless the default
4677 access in this context has been declared PRIVATE. */
4680 check_access (gfc_access specific_access, gfc_access default_access)
4682 if (specific_access == ACCESS_PUBLIC)
4684 if (specific_access == ACCESS_PRIVATE)
4687 if (gfc_option.flag_module_private)
4688 return default_access == ACCESS_PUBLIC;
4690 return default_access != ACCESS_PRIVATE;
4695 gfc_check_symbol_access (gfc_symbol *sym)
4697 if (sym->attr.vtab || sym->attr.vtype)
4700 return check_access (sym->attr.access, sym->ns->default_access);
4704 /* A structure to remember which commons we've already written. */
4706 struct written_common
4708 BBT_HEADER(written_common);
4709 const char *name, *label;
4712 static struct written_common *written_commons = NULL;
4714 /* Comparison function used for balancing the binary tree. */
4717 compare_written_commons (void *a1, void *b1)
4719 const char *aname = ((struct written_common *) a1)->name;
4720 const char *alabel = ((struct written_common *) a1)->label;
4721 const char *bname = ((struct written_common *) b1)->name;
4722 const char *blabel = ((struct written_common *) b1)->label;
4723 int c = strcmp (aname, bname);
4725 return (c != 0 ? c : strcmp (alabel, blabel));
4728 /* Free a list of written commons. */
4731 free_written_common (struct written_common *w)
4737 free_written_common (w->left);
4739 free_written_common (w->right);
4744 /* Write a common block to the module -- recursive helper function. */
4747 write_common_0 (gfc_symtree *st, bool this_module)
4753 struct written_common *w;
4754 bool write_me = true;
4759 write_common_0 (st->left, this_module);
4761 /* We will write out the binding label, or the name if no label given. */
4762 name = st->n.common->name;
4764 label = p->is_bind_c ? p->binding_label : p->name;
4766 /* Check if we've already output this common. */
4767 w = written_commons;
4770 int c = strcmp (name, w->name);
4771 c = (c != 0 ? c : strcmp (label, w->label));
4775 w = (c < 0) ? w->left : w->right;
4778 if (this_module && p->use_assoc)
4783 /* Write the common to the module. */
4785 mio_pool_string (&name);
4787 mio_symbol_ref (&p->head);
4788 flags = p->saved ? 1 : 0;
4789 if (p->threadprivate)
4791 mio_integer (&flags);
4793 /* Write out whether the common block is bind(c) or not. */
4794 mio_integer (&(p->is_bind_c));
4796 mio_pool_string (&label);
4799 /* Record that we have written this common. */
4800 w = XCNEW (struct written_common);
4803 gfc_insert_bbt (&written_commons, w, compare_written_commons);
4806 write_common_0 (st->right, this_module);
4810 /* Write a common, by initializing the list of written commons, calling
4811 the recursive function write_common_0() and cleaning up afterwards. */
4814 write_common (gfc_symtree *st)
4816 written_commons = NULL;
4817 write_common_0 (st, true);
4818 write_common_0 (st, false);
4819 free_written_common (written_commons);
4820 written_commons = NULL;
4824 /* Write the blank common block to the module. */
4827 write_blank_common (void)
4829 const char * name = BLANK_COMMON_NAME;
4831 /* TODO: Blank commons are not bind(c). The F2003 standard probably says
4832 this, but it hasn't been checked. Just making it so for now. */
4835 if (gfc_current_ns->blank_common.head == NULL)
4840 mio_pool_string (&name);
4842 mio_symbol_ref (&gfc_current_ns->blank_common.head);
4843 saved = gfc_current_ns->blank_common.saved;
4844 mio_integer (&saved);
4846 /* Write out whether the common block is bind(c) or not. */
4847 mio_integer (&is_bind_c);
4849 /* Write out the binding label, which is BLANK_COMMON_NAME, though
4850 it doesn't matter because the label isn't used. */
4851 mio_pool_string (&name);
4857 /* Write equivalences to the module. */
4866 for (eq = gfc_current_ns->equiv; eq; eq = eq->next)
4870 for (e = eq; e; e = e->eq)
4872 if (e->module == NULL)
4873 e->module = gfc_get_string ("%s.eq.%d", module_name, num);
4874 mio_allocated_string (e->module);
4875 mio_expr (&e->expr);
4884 /* Write derived type extensions to the module. */
4887 write_dt_extensions (gfc_symtree *st)
4889 if (!gfc_check_symbol_access (st->n.sym))
4891 if (!(st->n.sym->ns && st->n.sym->ns->proc_name
4892 && st->n.sym->ns->proc_name->attr.flavor == FL_MODULE))
4896 mio_pool_string (&st->name);
4897 if (st->n.sym->module != NULL)
4898 mio_pool_string (&st->n.sym->module);
4900 mio_internal_string (module_name);
4905 write_derived_extensions (gfc_symtree *st)
4907 if (!((st->n.sym->attr.flavor == FL_DERIVED)
4908 && (st->n.sym->f2k_derived != NULL)
4909 && (st->n.sym->f2k_derived->sym_root != NULL)))
4913 mio_symbol_ref (&(st->n.sym));
4914 gfc_traverse_symtree (st->n.sym->f2k_derived->sym_root,
4915 write_dt_extensions);
4920 /* Write a symbol to the module. */
4923 write_symbol (int n, gfc_symbol *sym)
4927 if (sym->attr.flavor == FL_UNKNOWN || sym->attr.flavor == FL_LABEL)
4928 gfc_internal_error ("write_symbol(): bad module symbol '%s'", sym->name);
4932 if (sym->attr.flavor == FL_DERIVED)
4935 name = dt_upper_string (sym->name);
4936 mio_pool_string (&name);
4939 mio_pool_string (&sym->name);
4941 mio_pool_string (&sym->module);
4942 if (sym->attr.is_bind_c || sym->attr.is_iso_c)
4944 label = sym->binding_label;
4945 mio_pool_string (&label);
4948 mio_pool_string (&sym->name);
4950 mio_pointer_ref (&sym->ns);
4957 /* Recursive traversal function to write the initial set of symbols to
4958 the module. We check to see if the symbol should be written
4959 according to the access specification. */
4962 write_symbol0 (gfc_symtree *st)
4966 bool dont_write = false;
4971 write_symbol0 (st->left);
4974 if (sym->module == NULL)
4975 sym->module = gfc_get_string (module_name);
4977 if (sym->attr.flavor == FL_PROCEDURE && sym->attr.generic
4978 && !sym->attr.subroutine && !sym->attr.function)
4981 if (!gfc_check_symbol_access (sym))
4986 p = get_pointer (sym);
4987 if (p->type == P_UNKNOWN)
4990 if (p->u.wsym.state != WRITTEN)
4992 write_symbol (p->integer, sym);
4993 p->u.wsym.state = WRITTEN;
4997 write_symbol0 (st->right);
5001 /* Recursive traversal function to write the secondary set of symbols
5002 to the module file. These are symbols that were not public yet are
5003 needed by the public symbols or another dependent symbol. The act
5004 of writing a symbol can modify the pointer_info tree, so we cease
5005 traversal if we find a symbol to write. We return nonzero if a
5006 symbol was written and pass that information upwards. */
5009 write_symbol1 (pointer_info *p)
5016 result = write_symbol1 (p->left);
5018 if (!(p->type != P_SYMBOL || p->u.wsym.state != NEEDS_WRITE))
5020 p->u.wsym.state = WRITTEN;
5021 write_symbol (p->integer, p->u.wsym.sym);
5025 result |= write_symbol1 (p->right);
5030 /* Write operator interfaces associated with a symbol. */
5033 write_operator (gfc_user_op *uop)
5035 static char nullstring[] = "";
5036 const char *p = nullstring;
5038 if (uop->op == NULL || !check_access (uop->access, uop->ns->default_access))
5041 mio_symbol_interface (&uop->name, &p, &uop->op);
5045 /* Write generic interfaces from the namespace sym_root. */
5048 write_generic (gfc_symtree *st)
5055 write_generic (st->left);
5056 write_generic (st->right);
5059 if (!sym || check_unique_name (st->name))
5062 if (sym->generic == NULL || !gfc_check_symbol_access (sym))
5065 if (sym->module == NULL)
5066 sym->module = gfc_get_string (module_name);
5068 mio_symbol_interface (&st->name, &sym->module, &sym->generic);
5073 write_symtree (gfc_symtree *st)
5080 /* A symbol in an interface body must not be visible in the
5082 if (sym->ns != gfc_current_ns
5083 && sym->ns->proc_name
5084 && sym->ns->proc_name->attr.if_source == IFSRC_IFBODY)
5087 if (!gfc_check_symbol_access (sym)
5088 || (sym->attr.flavor == FL_PROCEDURE && sym->attr.generic
5089 && !sym->attr.subroutine && !sym->attr.function))
5092 if (check_unique_name (st->name))
5095 p = find_pointer (sym);
5097 gfc_internal_error ("write_symtree(): Symbol not written");
5099 mio_pool_string (&st->name);
5100 mio_integer (&st->ambiguous);
5101 mio_integer (&p->integer);
5110 /* Write the operator interfaces. */
5113 for (i = GFC_INTRINSIC_BEGIN; i != GFC_INTRINSIC_END; i++)
5115 if (i == INTRINSIC_USER)
5118 mio_interface (check_access (gfc_current_ns->operator_access[i],
5119 gfc_current_ns->default_access)
5120 ? &gfc_current_ns->op[i] : NULL);
5128 gfc_traverse_user_op (gfc_current_ns, write_operator);
5134 write_generic (gfc_current_ns->sym_root);
5140 write_blank_common ();
5141 write_common (gfc_current_ns->common_root);
5153 gfc_traverse_symtree (gfc_current_ns->sym_root,
5154 write_derived_extensions);
5159 /* Write symbol information. First we traverse all symbols in the
5160 primary namespace, writing those that need to be written.
5161 Sometimes writing one symbol will cause another to need to be
5162 written. A list of these symbols ends up on the write stack, and
5163 we end by popping the bottom of the stack and writing the symbol
5164 until the stack is empty. */
5168 write_symbol0 (gfc_current_ns->sym_root);
5169 while (write_symbol1 (pi_root))
5178 gfc_traverse_symtree (gfc_current_ns->sym_root, write_symtree);
5183 /* Read a MD5 sum from the header of a module file. If the file cannot
5184 be opened, or we have any other error, we return -1. */
5187 read_md5_from_module_file (const char * filename, unsigned char md5[16])
5193 /* Open the file. */
5194 if ((file = fopen (filename, "r")) == NULL)
5197 /* Read the first line. */
5198 if (fgets (buf, sizeof (buf) - 1, file) == NULL)
5204 /* The file also needs to be overwritten if the version number changed. */
5205 n = strlen ("GFORTRAN module version '" MOD_VERSION "' created");
5206 if (strncmp (buf, "GFORTRAN module version '" MOD_VERSION "' created", n) != 0)
5212 /* Read a second line. */
5213 if (fgets (buf, sizeof (buf) - 1, file) == NULL)
5219 /* Close the file. */
5222 /* If the header is not what we expect, or is too short, bail out. */
5223 if (strncmp (buf, "MD5:", 4) != 0 || strlen (buf) < 4 + 16)
5226 /* Now, we have a real MD5, read it into the array. */
5227 for (n = 0; n < 16; n++)
5231 if (sscanf (&(buf[4+2*n]), "%02x", &x) != 1)
5241 /* Given module, dump it to disk. If there was an error while
5242 processing the module, dump_flag will be set to zero and we delete
5243 the module file, even if it was already there. */
5246 gfc_dump_module (const char *name, int dump_flag)
5249 char *filename, *filename_tmp;
5251 unsigned char md5_new[16], md5_old[16];
5253 n = strlen (name) + strlen (MODULE_EXTENSION) + 1;
5254 if (gfc_option.module_dir != NULL)
5256 n += strlen (gfc_option.module_dir);
5257 filename = (char *) alloca (n);
5258 strcpy (filename, gfc_option.module_dir);
5259 strcat (filename, name);
5263 filename = (char *) alloca (n);
5264 strcpy (filename, name);
5266 strcat (filename, MODULE_EXTENSION);
5268 /* Name of the temporary file used to write the module. */
5269 filename_tmp = (char *) alloca (n + 1);
5270 strcpy (filename_tmp, filename);
5271 strcat (filename_tmp, "0");
5273 /* There was an error while processing the module. We delete the
5274 module file, even if it was already there. */
5281 if (gfc_cpp_makedep ())
5282 gfc_cpp_add_target (filename);
5284 /* Write the module to the temporary file. */
5285 module_fp = fopen (filename_tmp, "w");
5286 if (module_fp == NULL)
5287 gfc_fatal_error ("Can't open module file '%s' for writing at %C: %s",
5288 filename_tmp, xstrerror (errno));
5290 /* Write the header, including space reserved for the MD5 sum. */
5291 fprintf (module_fp, "GFORTRAN module version '%s' created from %s\n"
5292 "MD5:", MOD_VERSION, gfc_source_file);
5293 fgetpos (module_fp, &md5_pos);
5294 fputs ("00000000000000000000000000000000 -- "
5295 "If you edit this, you'll get what you deserve.\n\n", module_fp);
5297 /* Initialize the MD5 context that will be used for output. */
5298 md5_init_ctx (&ctx);
5300 /* Write the module itself. */
5302 strcpy (module_name, name);
5308 free_pi_tree (pi_root);
5313 /* Write the MD5 sum to the header of the module file. */
5314 md5_finish_ctx (&ctx, md5_new);
5315 fsetpos (module_fp, &md5_pos);
5316 for (n = 0; n < 16; n++)
5317 fprintf (module_fp, "%02x", md5_new[n]);
5319 if (fclose (module_fp))
5320 gfc_fatal_error ("Error writing module file '%s' for writing: %s",
5321 filename_tmp, xstrerror (errno));
5323 /* Read the MD5 from the header of the old module file and compare. */
5324 if (read_md5_from_module_file (filename, md5_old) != 0
5325 || memcmp (md5_old, md5_new, sizeof (md5_old)) != 0)
5327 /* Module file have changed, replace the old one. */
5328 if (unlink (filename) && errno != ENOENT)
5329 gfc_fatal_error ("Can't delete module file '%s': %s", filename,
5331 if (rename (filename_tmp, filename))
5332 gfc_fatal_error ("Can't rename module file '%s' to '%s': %s",
5333 filename_tmp, filename, xstrerror (errno));
5337 if (unlink (filename_tmp))
5338 gfc_fatal_error ("Can't delete temporary module file '%s': %s",
5339 filename_tmp, xstrerror (errno));
5345 create_intrinsic_function (const char *name, gfc_isym_id id,
5346 const char *modname, intmod_id module)
5348 gfc_intrinsic_sym *isym;
5349 gfc_symtree *tmp_symtree;
5352 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5355 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5357 gfc_error ("Symbol '%s' already declared", name);
5360 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5361 sym = tmp_symtree->n.sym;
5363 isym = gfc_intrinsic_function_by_id (id);
5366 sym->attr.flavor = FL_PROCEDURE;
5367 sym->attr.intrinsic = 1;
5369 sym->module = gfc_get_string (modname);
5370 sym->attr.use_assoc = 1;
5371 sym->from_intmod = module;
5372 sym->intmod_sym_id = id;
5376 /* Import the intrinsic ISO_C_BINDING module, generating symbols in
5377 the current namespace for all named constants, pointer types, and
5378 procedures in the module unless the only clause was used or a rename
5379 list was provided. */
5382 import_iso_c_binding_module (void)
5384 gfc_symbol *mod_sym = NULL;
5385 gfc_symtree *mod_symtree = NULL;
5386 const char *iso_c_module_name = "__iso_c_binding";
5390 /* Look only in the current namespace. */
5391 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, iso_c_module_name);
5393 if (mod_symtree == NULL)
5395 /* symtree doesn't already exist in current namespace. */
5396 gfc_get_sym_tree (iso_c_module_name, gfc_current_ns, &mod_symtree,
5399 if (mod_symtree != NULL)
5400 mod_sym = mod_symtree->n.sym;
5402 gfc_internal_error ("import_iso_c_binding_module(): Unable to "
5403 "create symbol for %s", iso_c_module_name);
5405 mod_sym->attr.flavor = FL_MODULE;
5406 mod_sym->attr.intrinsic = 1;
5407 mod_sym->module = gfc_get_string (iso_c_module_name);
5408 mod_sym->from_intmod = INTMOD_ISO_C_BINDING;
5411 /* Generate the symbols for the named constants representing
5412 the kinds for intrinsic data types. */
5413 for (i = 0; i < ISOCBINDING_NUMBER; i++)
5416 for (u = gfc_rename_list; u; u = u->next)
5417 if (strcmp (c_interop_kinds_table[i].name, u->use_name) == 0)
5426 #define NAMED_FUNCTION(a,b,c,d) \
5428 not_in_std = (gfc_option.allow_std & d) == 0; \
5431 #include "iso-c-binding.def"
5432 #undef NAMED_FUNCTION
5433 #define NAMED_INTCST(a,b,c,d) \
5435 not_in_std = (gfc_option.allow_std & d) == 0; \
5438 #include "iso-c-binding.def"
5440 #define NAMED_REALCST(a,b,c,d) \
5442 not_in_std = (gfc_option.allow_std & d) == 0; \
5445 #include "iso-c-binding.def"
5446 #undef NAMED_REALCST
5447 #define NAMED_CMPXCST(a,b,c,d) \
5449 not_in_std = (gfc_option.allow_std & d) == 0; \
5452 #include "iso-c-binding.def"
5453 #undef NAMED_CMPXCST
5461 gfc_error ("The symbol '%s', referenced at %C, is not "
5462 "in the selected standard", name);
5468 #define NAMED_FUNCTION(a,b,c,d) \
5470 create_intrinsic_function (u->local_name[0] ? u->local_name \
5473 iso_c_module_name, \
5474 INTMOD_ISO_C_BINDING); \
5476 #include "iso-c-binding.def"
5477 #undef NAMED_FUNCTION
5480 generate_isocbinding_symbol (iso_c_module_name,
5481 (iso_c_binding_symbol) i,
5482 u->local_name[0] ? u->local_name
5487 if (!found && !only_flag)
5489 /* Skip, if the symbol is not in the enabled standard. */
5492 #define NAMED_FUNCTION(a,b,c,d) \
5494 if ((gfc_option.allow_std & d) == 0) \
5497 #include "iso-c-binding.def"
5498 #undef NAMED_FUNCTION
5500 #define NAMED_INTCST(a,b,c,d) \
5502 if ((gfc_option.allow_std & d) == 0) \
5505 #include "iso-c-binding.def"
5507 #define NAMED_REALCST(a,b,c,d) \
5509 if ((gfc_option.allow_std & d) == 0) \
5512 #include "iso-c-binding.def"
5513 #undef NAMED_REALCST
5514 #define NAMED_CMPXCST(a,b,c,d) \
5516 if ((gfc_option.allow_std & d) == 0) \
5519 #include "iso-c-binding.def"
5520 #undef NAMED_CMPXCST
5522 ; /* Not GFC_STD_* versioned. */
5527 #define NAMED_FUNCTION(a,b,c,d) \
5529 create_intrinsic_function (b, (gfc_isym_id) c, \
5530 iso_c_module_name, \
5531 INTMOD_ISO_C_BINDING); \
5533 #include "iso-c-binding.def"
5534 #undef NAMED_FUNCTION
5537 generate_isocbinding_symbol (iso_c_module_name,
5538 (iso_c_binding_symbol) i, NULL);
5543 for (u = gfc_rename_list; u; u = u->next)
5548 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
5549 "module ISO_C_BINDING", u->use_name, &u->where);
5554 /* Add an integer named constant from a given module. */
5557 create_int_parameter (const char *name, int value, const char *modname,
5558 intmod_id module, int id)
5560 gfc_symtree *tmp_symtree;
5563 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5564 if (tmp_symtree != NULL)
5566 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5569 gfc_error ("Symbol '%s' already declared", name);
5572 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5573 sym = tmp_symtree->n.sym;
5575 sym->module = gfc_get_string (modname);
5576 sym->attr.flavor = FL_PARAMETER;
5577 sym->ts.type = BT_INTEGER;
5578 sym->ts.kind = gfc_default_integer_kind;
5579 sym->value = gfc_get_int_expr (gfc_default_integer_kind, NULL, value);
5580 sym->attr.use_assoc = 1;
5581 sym->from_intmod = module;
5582 sym->intmod_sym_id = id;
5586 /* Value is already contained by the array constructor, but not
5590 create_int_parameter_array (const char *name, int size, gfc_expr *value,
5591 const char *modname, intmod_id module, int id)
5593 gfc_symtree *tmp_symtree;
5596 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5597 if (tmp_symtree != NULL)
5599 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5602 gfc_error ("Symbol '%s' already declared", name);
5605 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5606 sym = tmp_symtree->n.sym;
5608 sym->module = gfc_get_string (modname);
5609 sym->attr.flavor = FL_PARAMETER;
5610 sym->ts.type = BT_INTEGER;
5611 sym->ts.kind = gfc_default_integer_kind;
5612 sym->attr.use_assoc = 1;
5613 sym->from_intmod = module;
5614 sym->intmod_sym_id = id;
5615 sym->attr.dimension = 1;
5616 sym->as = gfc_get_array_spec ();
5618 sym->as->type = AS_EXPLICIT;
5619 sym->as->lower[0] = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1);
5620 sym->as->upper[0] = gfc_get_int_expr (gfc_default_integer_kind, NULL, size);
5623 sym->value->shape = gfc_get_shape (1);
5624 mpz_init_set_ui (sym->value->shape[0], size);
5628 /* Add an derived type for a given module. */
5631 create_derived_type (const char *name, const char *modname,
5632 intmod_id module, int id)
5634 gfc_symtree *tmp_symtree;
5635 gfc_symbol *sym, *dt_sym;
5636 gfc_interface *intr, *head;
5638 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5639 if (tmp_symtree != NULL)
5641 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5644 gfc_error ("Symbol '%s' already declared", name);
5647 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5648 sym = tmp_symtree->n.sym;
5649 sym->module = gfc_get_string (modname);
5650 sym->from_intmod = module;
5651 sym->intmod_sym_id = id;
5652 sym->attr.flavor = FL_PROCEDURE;
5653 sym->attr.function = 1;
5654 sym->attr.generic = 1;
5656 gfc_get_sym_tree (dt_upper_string (sym->name),
5657 gfc_current_ns, &tmp_symtree, false);
5658 dt_sym = tmp_symtree->n.sym;
5659 dt_sym->name = gfc_get_string (sym->name);
5660 dt_sym->attr.flavor = FL_DERIVED;
5661 dt_sym->attr.private_comp = 1;
5662 dt_sym->attr.zero_comp = 1;
5663 dt_sym->attr.use_assoc = 1;
5664 dt_sym->module = gfc_get_string (modname);
5665 dt_sym->from_intmod = module;
5666 dt_sym->intmod_sym_id = id;
5668 head = sym->generic;
5669 intr = gfc_get_interface ();
5671 intr->where = gfc_current_locus;
5673 sym->generic = intr;
5674 sym->attr.if_source = IFSRC_DECL;
5678 /* USE the ISO_FORTRAN_ENV intrinsic module. */
5681 use_iso_fortran_env_module (void)
5683 static char mod[] = "iso_fortran_env";
5685 gfc_symbol *mod_sym;
5686 gfc_symtree *mod_symtree;
5690 intmod_sym symbol[] = {
5691 #define NAMED_INTCST(a,b,c,d) { a, b, 0, d },
5692 #include "iso-fortran-env.def"
5694 #define NAMED_KINDARRAY(a,b,c,d) { a, b, 0, d },
5695 #include "iso-fortran-env.def"
5696 #undef NAMED_KINDARRAY
5697 #define NAMED_DERIVED_TYPE(a,b,c,d) { a, b, 0, d },
5698 #include "iso-fortran-env.def"
5699 #undef NAMED_DERIVED_TYPE
5700 #define NAMED_FUNCTION(a,b,c,d) { a, b, c, d },
5701 #include "iso-fortran-env.def"
5702 #undef NAMED_FUNCTION
5703 { ISOFORTRANENV_INVALID, NULL, -1234, 0 } };
5706 #define NAMED_INTCST(a,b,c,d) symbol[i++].value = c;
5707 #include "iso-fortran-env.def"
5710 /* Generate the symbol for the module itself. */
5711 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, mod);
5712 if (mod_symtree == NULL)
5714 gfc_get_sym_tree (mod, gfc_current_ns, &mod_symtree, false);
5715 gcc_assert (mod_symtree);
5716 mod_sym = mod_symtree->n.sym;
5718 mod_sym->attr.flavor = FL_MODULE;
5719 mod_sym->attr.intrinsic = 1;
5720 mod_sym->module = gfc_get_string (mod);
5721 mod_sym->from_intmod = INTMOD_ISO_FORTRAN_ENV;
5724 if (!mod_symtree->n.sym->attr.intrinsic)
5725 gfc_error ("Use of intrinsic module '%s' at %C conflicts with "
5726 "non-intrinsic module name used previously", mod);
5728 /* Generate the symbols for the module integer named constants. */
5730 for (i = 0; symbol[i].name; i++)
5733 for (u = gfc_rename_list; u; u = u->next)
5735 if (strcmp (symbol[i].name, u->use_name) == 0)
5740 if (gfc_notify_std (symbol[i].standard, "The symbol '%s', "
5741 "referenced at %C, is not in the selected "
5742 "standard", symbol[i].name) == FAILURE)
5745 if ((gfc_option.flag_default_integer || gfc_option.flag_default_real)
5746 && symbol[i].id == ISOFORTRANENV_NUMERIC_STORAGE_SIZE)
5747 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named "
5748 "constant from intrinsic module "
5749 "ISO_FORTRAN_ENV at %C is incompatible with "
5751 gfc_option.flag_default_integer
5752 ? "-fdefault-integer-8"
5753 : "-fdefault-real-8");
5754 switch (symbol[i].id)
5756 #define NAMED_INTCST(a,b,c,d) \
5758 #include "iso-fortran-env.def"
5760 create_int_parameter (u->local_name[0] ? u->local_name
5762 symbol[i].value, mod,
5763 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);
5766 #define NAMED_KINDARRAY(a,b,KINDS,d) \
5768 expr = gfc_get_array_expr (BT_INTEGER, \
5769 gfc_default_integer_kind,\
5771 for (j = 0; KINDS[j].kind != 0; j++) \
5772 gfc_constructor_append_expr (&expr->value.constructor, \
5773 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
5774 KINDS[j].kind), NULL); \
5775 create_int_parameter_array (u->local_name[0] ? u->local_name \
5778 INTMOD_ISO_FORTRAN_ENV, \
5781 #include "iso-fortran-env.def"
5782 #undef NAMED_KINDARRAY
5784 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
5786 #include "iso-fortran-env.def"
5787 create_derived_type (u->local_name[0] ? u->local_name
5789 mod, INTMOD_ISO_FORTRAN_ENV,
5792 #undef NAMED_DERIVED_TYPE
5794 #define NAMED_FUNCTION(a,b,c,d) \
5796 #include "iso-fortran-env.def"
5797 #undef NAMED_FUNCTION
5798 create_intrinsic_function (u->local_name[0] ? u->local_name
5800 (gfc_isym_id) symbol[i].value, mod,
5801 INTMOD_ISO_FORTRAN_ENV);
5810 if (!found && !only_flag)
5812 if ((gfc_option.allow_std & symbol[i].standard) == 0)
5815 if ((gfc_option.flag_default_integer || gfc_option.flag_default_real)
5816 && symbol[i].id == ISOFORTRANENV_NUMERIC_STORAGE_SIZE)
5817 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named constant "
5818 "from intrinsic module ISO_FORTRAN_ENV at %C is "
5819 "incompatible with option %s",
5820 gfc_option.flag_default_integer
5821 ? "-fdefault-integer-8" : "-fdefault-real-8");
5823 switch (symbol[i].id)
5825 #define NAMED_INTCST(a,b,c,d) \
5827 #include "iso-fortran-env.def"
5829 create_int_parameter (symbol[i].name, symbol[i].value, mod,
5830 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);
5833 #define NAMED_KINDARRAY(a,b,KINDS,d) \
5835 expr = gfc_get_array_expr (BT_INTEGER, gfc_default_integer_kind, \
5837 for (j = 0; KINDS[j].kind != 0; j++) \
5838 gfc_constructor_append_expr (&expr->value.constructor, \
5839 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
5840 KINDS[j].kind), NULL); \
5841 create_int_parameter_array (symbol[i].name, j, expr, mod, \
5842 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);\
5844 #include "iso-fortran-env.def"
5845 #undef NAMED_KINDARRAY
5847 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
5849 #include "iso-fortran-env.def"
5850 create_derived_type (symbol[i].name, mod, INTMOD_ISO_FORTRAN_ENV,
5853 #undef NAMED_DERIVED_TYPE
5855 #define NAMED_FUNCTION(a,b,c,d) \
5857 #include "iso-fortran-env.def"
5858 #undef NAMED_FUNCTION
5859 create_intrinsic_function (symbol[i].name,
5860 (gfc_isym_id) symbol[i].value, mod,
5861 INTMOD_ISO_FORTRAN_ENV);
5870 for (u = gfc_rename_list; u; u = u->next)
5875 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
5876 "module ISO_FORTRAN_ENV", u->use_name, &u->where);
5881 /* Process a USE directive. */
5884 gfc_use_module (void)
5889 gfc_symtree *mod_symtree;
5890 gfc_use_list *use_stmt;
5891 locus old_locus = gfc_current_locus;
5893 gfc_current_locus = use_locus;
5895 filename = (char *) alloca (strlen (module_name) + strlen (MODULE_EXTENSION)
5897 strcpy (filename, module_name);
5898 strcat (filename, MODULE_EXTENSION);
5900 /* First, try to find an non-intrinsic module, unless the USE statement
5901 specified that the module is intrinsic. */
5904 module_fp = gfc_open_included_file (filename, true, true);
5906 /* Then, see if it's an intrinsic one, unless the USE statement
5907 specified that the module is non-intrinsic. */
5908 if (module_fp == NULL && !specified_nonint)
5910 if (strcmp (module_name, "iso_fortran_env") == 0
5911 && gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ISO_FORTRAN_ENV "
5912 "intrinsic module at %C") != FAILURE)
5914 use_iso_fortran_env_module ();
5915 gfc_current_locus = old_locus;
5919 if (strcmp (module_name, "iso_c_binding") == 0
5920 && gfc_notify_std (GFC_STD_F2003, "Fortran 2003: "
5921 "ISO_C_BINDING module at %C") != FAILURE)
5923 import_iso_c_binding_module();
5924 gfc_current_locus = old_locus;
5928 module_fp = gfc_open_intrinsic_module (filename);
5930 if (module_fp == NULL && specified_int)
5931 gfc_fatal_error ("Can't find an intrinsic module named '%s' at %C",
5935 if (module_fp == NULL)
5936 gfc_fatal_error ("Can't open module file '%s' for reading at %C: %s",
5937 filename, xstrerror (errno));
5939 /* Check that we haven't already USEd an intrinsic module with the
5942 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, module_name);
5943 if (mod_symtree && mod_symtree->n.sym->attr.intrinsic)
5944 gfc_error ("Use of non-intrinsic module '%s' at %C conflicts with "
5945 "intrinsic module name used previously", module_name);
5952 /* Skip the first two lines of the module, after checking that this is
5953 a gfortran module file. */
5959 bad_module ("Unexpected end of module");
5962 if ((start == 1 && strcmp (atom_name, "GFORTRAN") != 0)
5963 || (start == 2 && strcmp (atom_name, " module") != 0))
5964 gfc_fatal_error ("File '%s' opened at %C is not a GFORTRAN module "
5968 if (strcmp (atom_name, " version") != 0
5969 || module_char () != ' '
5970 || parse_atom () != ATOM_STRING)
5971 gfc_fatal_error ("Parse error when checking module version"
5972 " for file '%s' opened at %C", filename);
5974 if (strcmp (atom_string, MOD_VERSION))
5976 gfc_fatal_error ("Wrong module version '%s' (expected '%s') "
5977 "for file '%s' opened at %C", atom_string,
5978 MOD_VERSION, filename);
5988 /* Make sure we're not reading the same module that we may be building. */
5989 for (p = gfc_state_stack; p; p = p->previous)
5990 if (p->state == COMP_MODULE && strcmp (p->sym->name, module_name) == 0)
5991 gfc_fatal_error ("Can't USE the same module we're building!");
5994 init_true_name_tree ();
5998 free_true_name (true_name_root);
5999 true_name_root = NULL;
6001 free_pi_tree (pi_root);
6006 use_stmt = gfc_get_use_list ();
6007 use_stmt->module_name = gfc_get_string (module_name);
6008 use_stmt->only_flag = only_flag;
6009 use_stmt->rename = gfc_rename_list;
6010 use_stmt->where = use_locus;
6011 gfc_rename_list = NULL;
6012 use_stmt->next = gfc_current_ns->use_stmts;
6013 gfc_current_ns->use_stmts = use_stmt;
6015 gfc_current_locus = old_locus;
6020 gfc_free_use_stmts (gfc_use_list *use_stmts)
6023 for (; use_stmts; use_stmts = next)
6025 gfc_use_rename *next_rename;
6027 for (; use_stmts->rename; use_stmts->rename = next_rename)
6029 next_rename = use_stmts->rename->next;
6030 free (use_stmts->rename);
6032 next = use_stmts->next;
6039 gfc_module_init_2 (void)
6041 last_atom = ATOM_LPAREN;
6046 gfc_module_done_2 (void)