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;
197 static int prev_module_line, prev_module_column, prev_character;
200 { IO_INPUT, IO_OUTPUT }
203 static gfc_use_rename *gfc_rename_list;
204 static pointer_info *pi_root;
205 static int symbol_number; /* Counter for assigning symbol numbers */
207 /* Tells mio_expr_ref to make symbols for unused equivalence members. */
208 static bool in_load_equiv;
210 static locus use_locus;
214 /*****************************************************************/
216 /* Pointer/integer conversion. Pointers between structures are stored
217 as integers in the module file. The next couple of subroutines
218 handle this translation for reading and writing. */
220 /* Recursively free the tree of pointer structures. */
223 free_pi_tree (pointer_info *p)
228 if (p->fixup != NULL)
229 gfc_internal_error ("free_pi_tree(): Unresolved fixup");
231 free_pi_tree (p->left);
232 free_pi_tree (p->right);
238 /* Compare pointers when searching by pointer. Used when writing a
242 compare_pointers (void *_sn1, void *_sn2)
244 pointer_info *sn1, *sn2;
246 sn1 = (pointer_info *) _sn1;
247 sn2 = (pointer_info *) _sn2;
249 if (sn1->u.pointer < sn2->u.pointer)
251 if (sn1->u.pointer > sn2->u.pointer)
258 /* Compare integers when searching by integer. Used when reading a
262 compare_integers (void *_sn1, void *_sn2)
264 pointer_info *sn1, *sn2;
266 sn1 = (pointer_info *) _sn1;
267 sn2 = (pointer_info *) _sn2;
269 if (sn1->integer < sn2->integer)
271 if (sn1->integer > sn2->integer)
278 /* Initialize the pointer_info tree. */
287 compare = (iomode == IO_INPUT) ? compare_integers : compare_pointers;
289 /* Pointer 0 is the NULL pointer. */
290 p = gfc_get_pointer_info ();
295 gfc_insert_bbt (&pi_root, p, compare);
297 /* Pointer 1 is the current namespace. */
298 p = gfc_get_pointer_info ();
299 p->u.pointer = gfc_current_ns;
301 p->type = P_NAMESPACE;
303 gfc_insert_bbt (&pi_root, p, compare);
309 /* During module writing, call here with a pointer to something,
310 returning the pointer_info node. */
312 static pointer_info *
313 find_pointer (void *gp)
320 if (p->u.pointer == gp)
322 p = (gp < p->u.pointer) ? p->left : p->right;
329 /* Given a pointer while writing, returns the pointer_info tree node,
330 creating it if it doesn't exist. */
332 static pointer_info *
333 get_pointer (void *gp)
337 p = find_pointer (gp);
341 /* Pointer doesn't have an integer. Give it one. */
342 p = gfc_get_pointer_info ();
345 p->integer = symbol_number++;
347 gfc_insert_bbt (&pi_root, p, compare_pointers);
353 /* Given an integer during reading, find it in the pointer_info tree,
354 creating the node if not found. */
356 static pointer_info *
357 get_integer (int integer)
367 c = compare_integers (&t, p);
371 p = (c < 0) ? p->left : p->right;
377 p = gfc_get_pointer_info ();
378 p->integer = integer;
381 gfc_insert_bbt (&pi_root, p, compare_integers);
387 /* Recursive function to find a pointer within a tree by brute force. */
389 static pointer_info *
390 fp2 (pointer_info *p, const void *target)
397 if (p->u.pointer == target)
400 q = fp2 (p->left, target);
404 return fp2 (p->right, target);
408 /* During reading, find a pointer_info node from the pointer value.
409 This amounts to a brute-force search. */
411 static pointer_info *
412 find_pointer2 (void *p)
414 return fp2 (pi_root, p);
418 /* Resolve any fixups using a known pointer. */
421 resolve_fixups (fixup_t *f, void *gp)
434 /* Convert a string such that it starts with a lower-case character. Used
435 to convert the symtree name of a derived-type to the symbol name or to
436 the name of the associated generic function. */
439 dt_lower_string (const char *name)
441 if (name[0] != (char) TOLOWER ((unsigned char) name[0]))
442 return gfc_get_string ("%c%s", (char) TOLOWER ((unsigned char) name[0]),
444 return gfc_get_string (name);
448 /* Convert a string such that it starts with an upper-case character. Used to
449 return the symtree-name for a derived type; the symbol name itself and the
450 symtree/symbol name of the associated generic function start with a lower-
454 dt_upper_string (const char *name)
456 if (name[0] != (char) TOUPPER ((unsigned char) name[0]))
457 return gfc_get_string ("%c%s", (char) TOUPPER ((unsigned char) name[0]),
459 return gfc_get_string (name);
462 /* Call here during module reading when we know what pointer to
463 associate with an integer. Any fixups that exist are resolved at
467 associate_integer_pointer (pointer_info *p, void *gp)
469 if (p->u.pointer != NULL)
470 gfc_internal_error ("associate_integer_pointer(): Already associated");
474 resolve_fixups (p->fixup, gp);
480 /* During module reading, given an integer and a pointer to a pointer,
481 either store the pointer from an already-known value or create a
482 fixup structure in order to store things later. Returns zero if
483 the reference has been actually stored, or nonzero if the reference
484 must be fixed later (i.e., associate_integer_pointer must be called
485 sometime later. Returns the pointer_info structure. */
487 static pointer_info *
488 add_fixup (int integer, void *gp)
494 p = get_integer (integer);
496 if (p->integer == 0 || p->u.pointer != NULL)
499 *cp = (char *) p->u.pointer;
508 f->pointer = (void **) gp;
515 /*****************************************************************/
517 /* Parser related subroutines */
519 /* Free the rename list left behind by a USE statement. */
524 gfc_use_rename *next;
526 for (; gfc_rename_list; gfc_rename_list = next)
528 next = gfc_rename_list->next;
529 free (gfc_rename_list);
534 /* Match a USE statement. */
539 char name[GFC_MAX_SYMBOL_LEN + 1], module_nature[GFC_MAX_SYMBOL_LEN + 1];
540 gfc_use_rename *tail = NULL, *new_use;
541 interface_type type, type2;
545 specified_int = false;
546 specified_nonint = false;
548 if (gfc_match (" , ") == MATCH_YES)
550 if ((m = gfc_match (" %n ::", module_nature)) == MATCH_YES)
552 if (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: module "
553 "nature in USE statement at %C") == FAILURE)
556 if (strcmp (module_nature, "intrinsic") == 0)
557 specified_int = true;
560 if (strcmp (module_nature, "non_intrinsic") == 0)
561 specified_nonint = true;
564 gfc_error ("Module nature in USE statement at %C shall "
565 "be either INTRINSIC or NON_INTRINSIC");
572 /* Help output a better error message than "Unclassifiable
574 gfc_match (" %n", module_nature);
575 if (strcmp (module_nature, "intrinsic") == 0
576 || strcmp (module_nature, "non_intrinsic") == 0)
577 gfc_error ("\"::\" was expected after module nature at %C "
578 "but was not found");
584 m = gfc_match (" ::");
585 if (m == MATCH_YES &&
586 gfc_notify_std (GFC_STD_F2003, "Fortran 2003: "
587 "\"USE :: module\" at %C") == FAILURE)
592 m = gfc_match ("% ");
598 use_locus = gfc_current_locus;
600 m = gfc_match_name (module_name);
607 if (gfc_match_eos () == MATCH_YES)
609 if (gfc_match_char (',') != MATCH_YES)
612 if (gfc_match (" only :") == MATCH_YES)
615 if (gfc_match_eos () == MATCH_YES)
620 /* Get a new rename struct and add it to the rename list. */
621 new_use = gfc_get_use_rename ();
622 new_use->where = gfc_current_locus;
625 if (gfc_rename_list == NULL)
626 gfc_rename_list = new_use;
628 tail->next = new_use;
631 /* See what kind of interface we're dealing with. Assume it is
633 new_use->op = INTRINSIC_NONE;
634 if (gfc_match_generic_spec (&type, name, &op) == MATCH_ERROR)
639 case INTERFACE_NAMELESS:
640 gfc_error ("Missing generic specification in USE statement at %C");
643 case INTERFACE_USER_OP:
644 case INTERFACE_GENERIC:
645 m = gfc_match (" =>");
647 if (type == INTERFACE_USER_OP && m == MATCH_YES
648 && (gfc_notify_std (GFC_STD_F2003, "Fortran 2003: Renaming "
649 "operators in USE statements at %C")
653 if (type == INTERFACE_USER_OP)
654 new_use->op = INTRINSIC_USER;
659 strcpy (new_use->use_name, name);
662 strcpy (new_use->local_name, name);
663 m = gfc_match_generic_spec (&type2, new_use->use_name, &op);
668 if (m == MATCH_ERROR)
676 strcpy (new_use->local_name, name);
678 m = gfc_match_generic_spec (&type2, new_use->use_name, &op);
683 if (m == MATCH_ERROR)
687 if (strcmp (new_use->use_name, module_name) == 0
688 || strcmp (new_use->local_name, module_name) == 0)
690 gfc_error ("The name '%s' at %C has already been used as "
691 "an external module name.", module_name);
696 case INTERFACE_INTRINSIC_OP:
704 if (gfc_match_eos () == MATCH_YES)
706 if (gfc_match_char (',') != MATCH_YES)
713 gfc_syntax_error (ST_USE);
721 /* Given a name and a number, inst, return the inst name
722 under which to load this symbol. Returns NULL if this
723 symbol shouldn't be loaded. If inst is zero, returns
724 the number of instances of this name. If interface is
725 true, a user-defined operator is sought, otherwise only
726 non-operators are sought. */
729 find_use_name_n (const char *name, int *inst, bool interface)
732 const char *low_name = NULL;
735 /* For derived types. */
736 if (name[0] != (char) TOLOWER ((unsigned char) name[0]))
737 low_name = dt_lower_string (name);
740 for (u = gfc_rename_list; u; u = u->next)
742 if ((!low_name && strcmp (u->use_name, name) != 0)
743 || (low_name && strcmp (u->use_name, low_name) != 0)
744 || (u->op == INTRINSIC_USER && !interface)
745 || (u->op != INTRINSIC_USER && interface))
758 return only_flag ? NULL : name;
764 if (u->local_name[0] == '\0')
766 return dt_upper_string (u->local_name);
769 return (u->local_name[0] != '\0') ? u->local_name : name;
773 /* Given a name, return the name under which to load this symbol.
774 Returns NULL if this symbol shouldn't be loaded. */
777 find_use_name (const char *name, bool interface)
780 return find_use_name_n (name, &i, interface);
784 /* Given a real name, return the number of use names associated with it. */
787 number_use_names (const char *name, bool interface)
790 find_use_name_n (name, &i, interface);
795 /* Try to find the operator in the current list. */
797 static gfc_use_rename *
798 find_use_operator (gfc_intrinsic_op op)
802 for (u = gfc_rename_list; u; u = u->next)
810 /*****************************************************************/
812 /* The next couple of subroutines maintain a tree used to avoid a
813 brute-force search for a combination of true name and module name.
814 While symtree names, the name that a particular symbol is known by
815 can changed with USE statements, we still have to keep track of the
816 true names to generate the correct reference, and also avoid
817 loading the same real symbol twice in a program unit.
819 When we start reading, the true name tree is built and maintained
820 as symbols are read. The tree is searched as we load new symbols
821 to see if it already exists someplace in the namespace. */
823 typedef struct true_name
825 BBT_HEADER (true_name);
831 static true_name *true_name_root;
834 /* Compare two true_name structures. */
837 compare_true_names (void *_t1, void *_t2)
842 t1 = (true_name *) _t1;
843 t2 = (true_name *) _t2;
845 c = ((t1->sym->module > t2->sym->module)
846 - (t1->sym->module < t2->sym->module));
850 return strcmp (t1->name, t2->name);
854 /* Given a true name, search the true name tree to see if it exists
855 within the main namespace. */
858 find_true_name (const char *name, const char *module)
864 t.name = gfc_get_string (name);
866 sym.module = gfc_get_string (module);
874 c = compare_true_names ((void *) (&t), (void *) p);
878 p = (c < 0) ? p->left : p->right;
885 /* Given a gfc_symbol pointer that is not in the true name tree, add it. */
888 add_true_name (gfc_symbol *sym)
892 t = XCNEW (true_name);
894 if (sym->attr.flavor == FL_DERIVED)
895 t->name = dt_upper_string (sym->name);
899 gfc_insert_bbt (&true_name_root, t, compare_true_names);
903 /* Recursive function to build the initial true name tree by
904 recursively traversing the current namespace. */
907 build_tnt (gfc_symtree *st)
913 build_tnt (st->left);
914 build_tnt (st->right);
916 if (st->n.sym->attr.flavor == FL_DERIVED)
917 name = dt_upper_string (st->n.sym->name);
919 name = st->n.sym->name;
921 if (find_true_name (name, st->n.sym->module) != NULL)
924 add_true_name (st->n.sym);
928 /* Initialize the true name tree with the current namespace. */
931 init_true_name_tree (void)
933 true_name_root = NULL;
934 build_tnt (gfc_current_ns->sym_root);
938 /* Recursively free a true name tree node. */
941 free_true_name (true_name *t)
945 free_true_name (t->left);
946 free_true_name (t->right);
952 /*****************************************************************/
954 /* Module reading and writing. */
958 ATOM_NAME, ATOM_LPAREN, ATOM_RPAREN, ATOM_INTEGER, ATOM_STRING
962 static atom_type last_atom;
965 /* The name buffer must be at least as long as a symbol name. Right
966 now it's not clear how we're going to store numeric constants--
967 probably as a hexadecimal string, since this will allow the exact
968 number to be preserved (this can't be done by a decimal
969 representation). Worry about that later. TODO! */
971 #define MAX_ATOM_SIZE 100
974 static char *atom_string, atom_name[MAX_ATOM_SIZE];
977 /* Report problems with a module. Error reporting is not very
978 elaborate, since this sorts of errors shouldn't really happen.
979 This subroutine never returns. */
981 static void bad_module (const char *) ATTRIBUTE_NORETURN;
984 bad_module (const char *msgid)
991 gfc_fatal_error ("Reading module %s at line %d column %d: %s",
992 module_name, module_line, module_column, msgid);
995 gfc_fatal_error ("Writing module %s at line %d column %d: %s",
996 module_name, module_line, module_column, msgid);
999 gfc_fatal_error ("Module %s at line %d column %d: %s",
1000 module_name, module_line, module_column, msgid);
1006 /* Set the module's input pointer. */
1009 set_module_locus (module_locus *m)
1011 module_column = m->column;
1012 module_line = m->line;
1013 fsetpos (module_fp, &m->pos);
1017 /* Get the module's input pointer so that we can restore it later. */
1020 get_module_locus (module_locus *m)
1022 m->column = module_column;
1023 m->line = module_line;
1024 fgetpos (module_fp, &m->pos);
1028 /* Get the next character in the module, updating our reckoning of
1036 c = getc (module_fp);
1039 bad_module ("Unexpected EOF");
1041 prev_module_line = module_line;
1042 prev_module_column = module_column;
1055 /* Unget a character while remembering the line and column. Works for
1056 a single character only. */
1059 module_unget_char (void)
1061 module_line = prev_module_line;
1062 module_column = prev_module_column;
1063 ungetc (prev_character, module_fp);
1066 /* Parse a string constant. The delimiter is guaranteed to be a
1076 atom_string = XNEWVEC (char, cursz);
1084 int c2 = module_char ();
1087 module_unget_char ();
1095 atom_string = XRESIZEVEC (char, atom_string, cursz);
1097 atom_string[len] = c;
1101 atom_string = XRESIZEVEC (char, atom_string, len + 1);
1102 atom_string[len] = '\0'; /* C-style string for debug purposes. */
1106 /* Parse a small integer. */
1109 parse_integer (int c)
1118 module_unget_char ();
1122 atom_int = 10 * atom_int + c - '0';
1123 if (atom_int > 99999999)
1124 bad_module ("Integer overflow");
1146 if (!ISALNUM (c) && c != '_' && c != '-')
1148 module_unget_char ();
1153 if (++len > GFC_MAX_SYMBOL_LEN)
1154 bad_module ("Name too long");
1162 /* Read the next atom in the module's input stream. */
1173 while (c == ' ' || c == '\r' || c == '\n');
1198 return ATOM_INTEGER;
1256 bad_module ("Bad name");
1263 /* Peek at the next atom on the input. */
1274 while (c == ' ' || c == '\r' || c == '\n');
1279 module_unget_char ();
1283 module_unget_char ();
1287 module_unget_char ();
1300 module_unget_char ();
1301 return ATOM_INTEGER;
1355 module_unget_char ();
1359 bad_module ("Bad name");
1364 /* Read the next atom from the input, requiring that it be a
1368 require_atom (atom_type type)
1374 column = module_column;
1383 p = _("Expected name");
1386 p = _("Expected left parenthesis");
1389 p = _("Expected right parenthesis");
1392 p = _("Expected integer");
1395 p = _("Expected string");
1398 gfc_internal_error ("require_atom(): bad atom type required");
1401 module_column = column;
1408 /* Given a pointer to an mstring array, require that the current input
1409 be one of the strings in the array. We return the enum value. */
1412 find_enum (const mstring *m)
1416 i = gfc_string2code (m, atom_name);
1420 bad_module ("find_enum(): Enum not found");
1426 /**************** Module output subroutines ***************************/
1428 /* Output a character to a module file. */
1431 write_char (char out)
1433 if (putc (out, module_fp) == EOF)
1434 gfc_fatal_error ("Error writing modules file: %s", xstrerror (errno));
1436 /* Add this to our MD5. */
1437 md5_process_bytes (&out, sizeof (out), &ctx);
1449 /* Write an atom to a module. The line wrapping isn't perfect, but it
1450 should work most of the time. This isn't that big of a deal, since
1451 the file really isn't meant to be read by people anyway. */
1454 write_atom (atom_type atom, const void *v)
1464 p = (const char *) v;
1476 i = *((const int *) v);
1478 gfc_internal_error ("write_atom(): Writing negative integer");
1480 sprintf (buffer, "%d", i);
1485 gfc_internal_error ("write_atom(): Trying to write dab atom");
1489 if(p == NULL || *p == '\0')
1494 if (atom != ATOM_RPAREN)
1496 if (module_column + len > 72)
1501 if (last_atom != ATOM_LPAREN && module_column != 1)
1506 if (atom == ATOM_STRING)
1509 while (p != NULL && *p)
1511 if (atom == ATOM_STRING && *p == '\'')
1516 if (atom == ATOM_STRING)
1524 /***************** Mid-level I/O subroutines *****************/
1526 /* These subroutines let their caller read or write atoms without
1527 caring about which of the two is actually happening. This lets a
1528 subroutine concentrate on the actual format of the data being
1531 static void mio_expr (gfc_expr **);
1532 pointer_info *mio_symbol_ref (gfc_symbol **);
1533 pointer_info *mio_interface_rest (gfc_interface **);
1534 static void mio_symtree_ref (gfc_symtree **);
1536 /* Read or write an enumerated value. On writing, we return the input
1537 value for the convenience of callers. We avoid using an integer
1538 pointer because enums are sometimes inside bitfields. */
1541 mio_name (int t, const mstring *m)
1543 if (iomode == IO_OUTPUT)
1544 write_atom (ATOM_NAME, gfc_code2string (m, t));
1547 require_atom (ATOM_NAME);
1554 /* Specialization of mio_name. */
1556 #define DECL_MIO_NAME(TYPE) \
1557 static inline TYPE \
1558 MIO_NAME(TYPE) (TYPE t, const mstring *m) \
1560 return (TYPE) mio_name ((int) t, m); \
1562 #define MIO_NAME(TYPE) mio_name_##TYPE
1567 if (iomode == IO_OUTPUT)
1568 write_atom (ATOM_LPAREN, NULL);
1570 require_atom (ATOM_LPAREN);
1577 if (iomode == IO_OUTPUT)
1578 write_atom (ATOM_RPAREN, NULL);
1580 require_atom (ATOM_RPAREN);
1585 mio_integer (int *ip)
1587 if (iomode == IO_OUTPUT)
1588 write_atom (ATOM_INTEGER, ip);
1591 require_atom (ATOM_INTEGER);
1597 /* Read or write a gfc_intrinsic_op value. */
1600 mio_intrinsic_op (gfc_intrinsic_op* op)
1602 /* FIXME: Would be nicer to do this via the operators symbolic name. */
1603 if (iomode == IO_OUTPUT)
1605 int converted = (int) *op;
1606 write_atom (ATOM_INTEGER, &converted);
1610 require_atom (ATOM_INTEGER);
1611 *op = (gfc_intrinsic_op) atom_int;
1616 /* Read or write a character pointer that points to a string on the heap. */
1619 mio_allocated_string (const char *s)
1621 if (iomode == IO_OUTPUT)
1623 write_atom (ATOM_STRING, s);
1628 require_atom (ATOM_STRING);
1634 /* Functions for quoting and unquoting strings. */
1637 quote_string (const gfc_char_t *s, const size_t slength)
1639 const gfc_char_t *p;
1643 /* Calculate the length we'll need: a backslash takes two ("\\"),
1644 non-printable characters take 10 ("\Uxxxxxxxx") and others take 1. */
1645 for (p = s, i = 0; i < slength; p++, i++)
1649 else if (!gfc_wide_is_printable (*p))
1655 q = res = XCNEWVEC (char, len + 1);
1656 for (p = s, i = 0; i < slength; p++, i++)
1659 *q++ = '\\', *q++ = '\\';
1660 else if (!gfc_wide_is_printable (*p))
1662 sprintf (q, "\\U%08" HOST_WIDE_INT_PRINT "x",
1663 (unsigned HOST_WIDE_INT) *p);
1667 *q++ = (unsigned char) *p;
1675 unquote_string (const char *s)
1681 for (p = s, len = 0; *p; p++, len++)
1688 else if (p[1] == 'U')
1689 p += 9; /* That is a "\U????????". */
1691 gfc_internal_error ("unquote_string(): got bad string");
1694 res = gfc_get_wide_string (len + 1);
1695 for (i = 0, p = s; i < len; i++, p++)
1700 res[i] = (unsigned char) *p;
1701 else if (p[1] == '\\')
1703 res[i] = (unsigned char) '\\';
1708 /* We read the 8-digits hexadecimal constant that follows. */
1713 gcc_assert (p[1] == 'U');
1714 for (j = 0; j < 8; j++)
1717 gcc_assert (sscanf (&p[j+2], "%01x", &n) == 1);
1731 /* Read or write a character pointer that points to a wide string on the
1732 heap, performing quoting/unquoting of nonprintable characters using the
1733 form \U???????? (where each ? is a hexadecimal digit).
1734 Length is the length of the string, only known and used in output mode. */
1736 static const gfc_char_t *
1737 mio_allocated_wide_string (const gfc_char_t *s, const size_t length)
1739 if (iomode == IO_OUTPUT)
1741 char *quoted = quote_string (s, length);
1742 write_atom (ATOM_STRING, quoted);
1748 gfc_char_t *unquoted;
1750 require_atom (ATOM_STRING);
1751 unquoted = unquote_string (atom_string);
1758 /* Read or write a string that is in static memory. */
1761 mio_pool_string (const char **stringp)
1763 /* TODO: one could write the string only once, and refer to it via a
1766 /* As a special case we have to deal with a NULL string. This
1767 happens for the 'module' member of 'gfc_symbol's that are not in a
1768 module. We read / write these as the empty string. */
1769 if (iomode == IO_OUTPUT)
1771 const char *p = *stringp == NULL ? "" : *stringp;
1772 write_atom (ATOM_STRING, p);
1776 require_atom (ATOM_STRING);
1777 *stringp = atom_string[0] == '\0' ? NULL : gfc_get_string (atom_string);
1783 /* Read or write a string that is inside of some already-allocated
1787 mio_internal_string (char *string)
1789 if (iomode == IO_OUTPUT)
1790 write_atom (ATOM_STRING, string);
1793 require_atom (ATOM_STRING);
1794 strcpy (string, atom_string);
1801 { AB_ALLOCATABLE, AB_DIMENSION, AB_EXTERNAL, AB_INTRINSIC, AB_OPTIONAL,
1802 AB_POINTER, AB_TARGET, AB_DUMMY, AB_RESULT, AB_DATA,
1803 AB_IN_NAMELIST, AB_IN_COMMON, AB_FUNCTION, AB_SUBROUTINE, AB_SEQUENCE,
1804 AB_ELEMENTAL, AB_PURE, AB_RECURSIVE, AB_GENERIC, AB_ALWAYS_EXPLICIT,
1805 AB_CRAY_POINTER, AB_CRAY_POINTEE, AB_THREADPRIVATE,
1806 AB_ALLOC_COMP, AB_POINTER_COMP, AB_PROC_POINTER_COMP, AB_PRIVATE_COMP,
1807 AB_VALUE, AB_VOLATILE, AB_PROTECTED, AB_LOCK_COMP,
1808 AB_IS_BIND_C, AB_IS_C_INTEROP, AB_IS_ISO_C, AB_ABSTRACT, AB_ZERO_COMP,
1809 AB_IS_CLASS, AB_PROCEDURE, AB_PROC_POINTER, AB_ASYNCHRONOUS, AB_CODIMENSION,
1810 AB_COARRAY_COMP, AB_VTYPE, AB_VTAB, AB_CONTIGUOUS, AB_CLASS_POINTER,
1815 static const mstring attr_bits[] =
1817 minit ("ALLOCATABLE", AB_ALLOCATABLE),
1818 minit ("ASYNCHRONOUS", AB_ASYNCHRONOUS),
1819 minit ("DIMENSION", AB_DIMENSION),
1820 minit ("CODIMENSION", AB_CODIMENSION),
1821 minit ("CONTIGUOUS", AB_CONTIGUOUS),
1822 minit ("EXTERNAL", AB_EXTERNAL),
1823 minit ("INTRINSIC", AB_INTRINSIC),
1824 minit ("OPTIONAL", AB_OPTIONAL),
1825 minit ("POINTER", AB_POINTER),
1826 minit ("VOLATILE", AB_VOLATILE),
1827 minit ("TARGET", AB_TARGET),
1828 minit ("THREADPRIVATE", AB_THREADPRIVATE),
1829 minit ("DUMMY", AB_DUMMY),
1830 minit ("RESULT", AB_RESULT),
1831 minit ("DATA", AB_DATA),
1832 minit ("IN_NAMELIST", AB_IN_NAMELIST),
1833 minit ("IN_COMMON", AB_IN_COMMON),
1834 minit ("FUNCTION", AB_FUNCTION),
1835 minit ("SUBROUTINE", AB_SUBROUTINE),
1836 minit ("SEQUENCE", AB_SEQUENCE),
1837 minit ("ELEMENTAL", AB_ELEMENTAL),
1838 minit ("PURE", AB_PURE),
1839 minit ("RECURSIVE", AB_RECURSIVE),
1840 minit ("GENERIC", AB_GENERIC),
1841 minit ("ALWAYS_EXPLICIT", AB_ALWAYS_EXPLICIT),
1842 minit ("CRAY_POINTER", AB_CRAY_POINTER),
1843 minit ("CRAY_POINTEE", AB_CRAY_POINTEE),
1844 minit ("IS_BIND_C", AB_IS_BIND_C),
1845 minit ("IS_C_INTEROP", AB_IS_C_INTEROP),
1846 minit ("IS_ISO_C", AB_IS_ISO_C),
1847 minit ("VALUE", AB_VALUE),
1848 minit ("ALLOC_COMP", AB_ALLOC_COMP),
1849 minit ("COARRAY_COMP", AB_COARRAY_COMP),
1850 minit ("LOCK_COMP", AB_LOCK_COMP),
1851 minit ("POINTER_COMP", AB_POINTER_COMP),
1852 minit ("PROC_POINTER_COMP", AB_PROC_POINTER_COMP),
1853 minit ("PRIVATE_COMP", AB_PRIVATE_COMP),
1854 minit ("ZERO_COMP", AB_ZERO_COMP),
1855 minit ("PROTECTED", AB_PROTECTED),
1856 minit ("ABSTRACT", AB_ABSTRACT),
1857 minit ("IS_CLASS", AB_IS_CLASS),
1858 minit ("PROCEDURE", AB_PROCEDURE),
1859 minit ("PROC_POINTER", AB_PROC_POINTER),
1860 minit ("VTYPE", AB_VTYPE),
1861 minit ("VTAB", AB_VTAB),
1862 minit ("CLASS_POINTER", AB_CLASS_POINTER),
1863 minit ("IMPLICIT_PURE", AB_IMPLICIT_PURE),
1867 /* For binding attributes. */
1868 static const mstring binding_passing[] =
1871 minit ("NOPASS", 1),
1874 static const mstring binding_overriding[] =
1876 minit ("OVERRIDABLE", 0),
1877 minit ("NON_OVERRIDABLE", 1),
1878 minit ("DEFERRED", 2),
1881 static const mstring binding_generic[] =
1883 minit ("SPECIFIC", 0),
1884 minit ("GENERIC", 1),
1887 static const mstring binding_ppc[] =
1889 minit ("NO_PPC", 0),
1894 /* Specialization of mio_name. */
1895 DECL_MIO_NAME (ab_attribute)
1896 DECL_MIO_NAME (ar_type)
1897 DECL_MIO_NAME (array_type)
1899 DECL_MIO_NAME (expr_t)
1900 DECL_MIO_NAME (gfc_access)
1901 DECL_MIO_NAME (gfc_intrinsic_op)
1902 DECL_MIO_NAME (ifsrc)
1903 DECL_MIO_NAME (save_state)
1904 DECL_MIO_NAME (procedure_type)
1905 DECL_MIO_NAME (ref_type)
1906 DECL_MIO_NAME (sym_flavor)
1907 DECL_MIO_NAME (sym_intent)
1908 #undef DECL_MIO_NAME
1910 /* Symbol attributes are stored in list with the first three elements
1911 being the enumerated fields, while the remaining elements (if any)
1912 indicate the individual attribute bits. The access field is not
1913 saved-- it controls what symbols are exported when a module is
1917 mio_symbol_attribute (symbol_attribute *attr)
1920 unsigned ext_attr,extension_level;
1924 attr->flavor = MIO_NAME (sym_flavor) (attr->flavor, flavors);
1925 attr->intent = MIO_NAME (sym_intent) (attr->intent, intents);
1926 attr->proc = MIO_NAME (procedure_type) (attr->proc, procedures);
1927 attr->if_source = MIO_NAME (ifsrc) (attr->if_source, ifsrc_types);
1928 attr->save = MIO_NAME (save_state) (attr->save, save_status);
1930 ext_attr = attr->ext_attr;
1931 mio_integer ((int *) &ext_attr);
1932 attr->ext_attr = ext_attr;
1934 extension_level = attr->extension;
1935 mio_integer ((int *) &extension_level);
1936 attr->extension = extension_level;
1938 if (iomode == IO_OUTPUT)
1940 if (attr->allocatable)
1941 MIO_NAME (ab_attribute) (AB_ALLOCATABLE, attr_bits);
1942 if (attr->asynchronous)
1943 MIO_NAME (ab_attribute) (AB_ASYNCHRONOUS, attr_bits);
1944 if (attr->dimension)
1945 MIO_NAME (ab_attribute) (AB_DIMENSION, attr_bits);
1946 if (attr->codimension)
1947 MIO_NAME (ab_attribute) (AB_CODIMENSION, attr_bits);
1948 if (attr->contiguous)
1949 MIO_NAME (ab_attribute) (AB_CONTIGUOUS, attr_bits);
1951 MIO_NAME (ab_attribute) (AB_EXTERNAL, attr_bits);
1952 if (attr->intrinsic)
1953 MIO_NAME (ab_attribute) (AB_INTRINSIC, attr_bits);
1955 MIO_NAME (ab_attribute) (AB_OPTIONAL, attr_bits);
1957 MIO_NAME (ab_attribute) (AB_POINTER, attr_bits);
1958 if (attr->class_pointer)
1959 MIO_NAME (ab_attribute) (AB_CLASS_POINTER, attr_bits);
1960 if (attr->is_protected)
1961 MIO_NAME (ab_attribute) (AB_PROTECTED, attr_bits);
1963 MIO_NAME (ab_attribute) (AB_VALUE, attr_bits);
1964 if (attr->volatile_)
1965 MIO_NAME (ab_attribute) (AB_VOLATILE, attr_bits);
1967 MIO_NAME (ab_attribute) (AB_TARGET, attr_bits);
1968 if (attr->threadprivate)
1969 MIO_NAME (ab_attribute) (AB_THREADPRIVATE, attr_bits);
1971 MIO_NAME (ab_attribute) (AB_DUMMY, attr_bits);
1973 MIO_NAME (ab_attribute) (AB_RESULT, attr_bits);
1974 /* We deliberately don't preserve the "entry" flag. */
1977 MIO_NAME (ab_attribute) (AB_DATA, attr_bits);
1978 if (attr->in_namelist)
1979 MIO_NAME (ab_attribute) (AB_IN_NAMELIST, attr_bits);
1980 if (attr->in_common)
1981 MIO_NAME (ab_attribute) (AB_IN_COMMON, attr_bits);
1984 MIO_NAME (ab_attribute) (AB_FUNCTION, attr_bits);
1985 if (attr->subroutine)
1986 MIO_NAME (ab_attribute) (AB_SUBROUTINE, attr_bits);
1988 MIO_NAME (ab_attribute) (AB_GENERIC, attr_bits);
1990 MIO_NAME (ab_attribute) (AB_ABSTRACT, attr_bits);
1993 MIO_NAME (ab_attribute) (AB_SEQUENCE, attr_bits);
1994 if (attr->elemental)
1995 MIO_NAME (ab_attribute) (AB_ELEMENTAL, attr_bits);
1997 MIO_NAME (ab_attribute) (AB_PURE, attr_bits);
1998 if (attr->implicit_pure)
1999 MIO_NAME (ab_attribute) (AB_IMPLICIT_PURE, attr_bits);
2000 if (attr->recursive)
2001 MIO_NAME (ab_attribute) (AB_RECURSIVE, attr_bits);
2002 if (attr->always_explicit)
2003 MIO_NAME (ab_attribute) (AB_ALWAYS_EXPLICIT, attr_bits);
2004 if (attr->cray_pointer)
2005 MIO_NAME (ab_attribute) (AB_CRAY_POINTER, attr_bits);
2006 if (attr->cray_pointee)
2007 MIO_NAME (ab_attribute) (AB_CRAY_POINTEE, attr_bits);
2008 if (attr->is_bind_c)
2009 MIO_NAME(ab_attribute) (AB_IS_BIND_C, attr_bits);
2010 if (attr->is_c_interop)
2011 MIO_NAME(ab_attribute) (AB_IS_C_INTEROP, attr_bits);
2013 MIO_NAME(ab_attribute) (AB_IS_ISO_C, attr_bits);
2014 if (attr->alloc_comp)
2015 MIO_NAME (ab_attribute) (AB_ALLOC_COMP, attr_bits);
2016 if (attr->pointer_comp)
2017 MIO_NAME (ab_attribute) (AB_POINTER_COMP, attr_bits);
2018 if (attr->proc_pointer_comp)
2019 MIO_NAME (ab_attribute) (AB_PROC_POINTER_COMP, attr_bits);
2020 if (attr->private_comp)
2021 MIO_NAME (ab_attribute) (AB_PRIVATE_COMP, attr_bits);
2022 if (attr->coarray_comp)
2023 MIO_NAME (ab_attribute) (AB_COARRAY_COMP, attr_bits);
2024 if (attr->lock_comp)
2025 MIO_NAME (ab_attribute) (AB_LOCK_COMP, attr_bits);
2026 if (attr->zero_comp)
2027 MIO_NAME (ab_attribute) (AB_ZERO_COMP, attr_bits);
2029 MIO_NAME (ab_attribute) (AB_IS_CLASS, attr_bits);
2030 if (attr->procedure)
2031 MIO_NAME (ab_attribute) (AB_PROCEDURE, attr_bits);
2032 if (attr->proc_pointer)
2033 MIO_NAME (ab_attribute) (AB_PROC_POINTER, attr_bits);
2035 MIO_NAME (ab_attribute) (AB_VTYPE, attr_bits);
2037 MIO_NAME (ab_attribute) (AB_VTAB, attr_bits);
2047 if (t == ATOM_RPAREN)
2050 bad_module ("Expected attribute bit name");
2052 switch ((ab_attribute) find_enum (attr_bits))
2054 case AB_ALLOCATABLE:
2055 attr->allocatable = 1;
2057 case AB_ASYNCHRONOUS:
2058 attr->asynchronous = 1;
2061 attr->dimension = 1;
2063 case AB_CODIMENSION:
2064 attr->codimension = 1;
2067 attr->contiguous = 1;
2073 attr->intrinsic = 1;
2081 case AB_CLASS_POINTER:
2082 attr->class_pointer = 1;
2085 attr->is_protected = 1;
2091 attr->volatile_ = 1;
2096 case AB_THREADPRIVATE:
2097 attr->threadprivate = 1;
2108 case AB_IN_NAMELIST:
2109 attr->in_namelist = 1;
2112 attr->in_common = 1;
2118 attr->subroutine = 1;
2130 attr->elemental = 1;
2135 case AB_IMPLICIT_PURE:
2136 attr->implicit_pure = 1;
2139 attr->recursive = 1;
2141 case AB_ALWAYS_EXPLICIT:
2142 attr->always_explicit = 1;
2144 case AB_CRAY_POINTER:
2145 attr->cray_pointer = 1;
2147 case AB_CRAY_POINTEE:
2148 attr->cray_pointee = 1;
2151 attr->is_bind_c = 1;
2153 case AB_IS_C_INTEROP:
2154 attr->is_c_interop = 1;
2160 attr->alloc_comp = 1;
2162 case AB_COARRAY_COMP:
2163 attr->coarray_comp = 1;
2166 attr->lock_comp = 1;
2168 case AB_POINTER_COMP:
2169 attr->pointer_comp = 1;
2171 case AB_PROC_POINTER_COMP:
2172 attr->proc_pointer_comp = 1;
2174 case AB_PRIVATE_COMP:
2175 attr->private_comp = 1;
2178 attr->zero_comp = 1;
2184 attr->procedure = 1;
2186 case AB_PROC_POINTER:
2187 attr->proc_pointer = 1;
2201 static const mstring bt_types[] = {
2202 minit ("INTEGER", BT_INTEGER),
2203 minit ("REAL", BT_REAL),
2204 minit ("COMPLEX", BT_COMPLEX),
2205 minit ("LOGICAL", BT_LOGICAL),
2206 minit ("CHARACTER", BT_CHARACTER),
2207 minit ("DERIVED", BT_DERIVED),
2208 minit ("CLASS", BT_CLASS),
2209 minit ("PROCEDURE", BT_PROCEDURE),
2210 minit ("UNKNOWN", BT_UNKNOWN),
2211 minit ("VOID", BT_VOID),
2217 mio_charlen (gfc_charlen **clp)
2223 if (iomode == IO_OUTPUT)
2227 mio_expr (&cl->length);
2231 if (peek_atom () != ATOM_RPAREN)
2233 cl = gfc_new_charlen (gfc_current_ns, NULL);
2234 mio_expr (&cl->length);
2243 /* See if a name is a generated name. */
2246 check_unique_name (const char *name)
2248 return *name == '@';
2253 mio_typespec (gfc_typespec *ts)
2257 ts->type = MIO_NAME (bt) (ts->type, bt_types);
2259 if (ts->type != BT_DERIVED && ts->type != BT_CLASS)
2260 mio_integer (&ts->kind);
2262 mio_symbol_ref (&ts->u.derived);
2264 mio_symbol_ref (&ts->interface);
2266 /* Add info for C interop and is_iso_c. */
2267 mio_integer (&ts->is_c_interop);
2268 mio_integer (&ts->is_iso_c);
2270 /* If the typespec is for an identifier either from iso_c_binding, or
2271 a constant that was initialized to an identifier from it, use the
2272 f90_type. Otherwise, use the ts->type, since it shouldn't matter. */
2274 ts->f90_type = MIO_NAME (bt) (ts->f90_type, bt_types);
2276 ts->f90_type = MIO_NAME (bt) (ts->type, bt_types);
2278 if (ts->type != BT_CHARACTER)
2280 /* ts->u.cl is only valid for BT_CHARACTER. */
2285 mio_charlen (&ts->u.cl);
2287 /* So as not to disturb the existing API, use an ATOM_NAME to
2288 transmit deferred characteristic for characters (F2003). */
2289 if (iomode == IO_OUTPUT)
2291 if (ts->type == BT_CHARACTER && ts->deferred)
2292 write_atom (ATOM_NAME, "DEFERRED_CL");
2294 else if (peek_atom () != ATOM_RPAREN)
2296 if (parse_atom () != ATOM_NAME)
2297 bad_module ("Expected string");
2305 static const mstring array_spec_types[] = {
2306 minit ("EXPLICIT", AS_EXPLICIT),
2307 minit ("ASSUMED_SHAPE", AS_ASSUMED_SHAPE),
2308 minit ("DEFERRED", AS_DEFERRED),
2309 minit ("ASSUMED_SIZE", AS_ASSUMED_SIZE),
2315 mio_array_spec (gfc_array_spec **asp)
2322 if (iomode == IO_OUTPUT)
2330 if (peek_atom () == ATOM_RPAREN)
2336 *asp = as = gfc_get_array_spec ();
2339 mio_integer (&as->rank);
2340 mio_integer (&as->corank);
2341 as->type = MIO_NAME (array_type) (as->type, array_spec_types);
2343 if (iomode == IO_INPUT && as->corank)
2344 as->cotype = (as->type == AS_DEFERRED) ? AS_DEFERRED : AS_EXPLICIT;
2346 for (i = 0; i < as->rank + as->corank; i++)
2348 mio_expr (&as->lower[i]);
2349 mio_expr (&as->upper[i]);
2357 /* Given a pointer to an array reference structure (which lives in a
2358 gfc_ref structure), find the corresponding array specification
2359 structure. Storing the pointer in the ref structure doesn't quite
2360 work when loading from a module. Generating code for an array
2361 reference also needs more information than just the array spec. */
2363 static const mstring array_ref_types[] = {
2364 minit ("FULL", AR_FULL),
2365 minit ("ELEMENT", AR_ELEMENT),
2366 minit ("SECTION", AR_SECTION),
2372 mio_array_ref (gfc_array_ref *ar)
2377 ar->type = MIO_NAME (ar_type) (ar->type, array_ref_types);
2378 mio_integer (&ar->dimen);
2386 for (i = 0; i < ar->dimen; i++)
2387 mio_expr (&ar->start[i]);
2392 for (i = 0; i < ar->dimen; i++)
2394 mio_expr (&ar->start[i]);
2395 mio_expr (&ar->end[i]);
2396 mio_expr (&ar->stride[i]);
2402 gfc_internal_error ("mio_array_ref(): Unknown array ref");
2405 /* Unfortunately, ar->dimen_type is an anonymous enumerated type so
2406 we can't call mio_integer directly. Instead loop over each element
2407 and cast it to/from an integer. */
2408 if (iomode == IO_OUTPUT)
2410 for (i = 0; i < ar->dimen; i++)
2412 int tmp = (int)ar->dimen_type[i];
2413 write_atom (ATOM_INTEGER, &tmp);
2418 for (i = 0; i < ar->dimen; i++)
2420 require_atom (ATOM_INTEGER);
2421 ar->dimen_type[i] = (enum gfc_array_ref_dimen_type) atom_int;
2425 if (iomode == IO_INPUT)
2427 ar->where = gfc_current_locus;
2429 for (i = 0; i < ar->dimen; i++)
2430 ar->c_where[i] = gfc_current_locus;
2437 /* Saves or restores a pointer. The pointer is converted back and
2438 forth from an integer. We return the pointer_info pointer so that
2439 the caller can take additional action based on the pointer type. */
2441 static pointer_info *
2442 mio_pointer_ref (void *gp)
2446 if (iomode == IO_OUTPUT)
2448 p = get_pointer (*((char **) gp));
2449 write_atom (ATOM_INTEGER, &p->integer);
2453 require_atom (ATOM_INTEGER);
2454 p = add_fixup (atom_int, gp);
2461 /* Save and load references to components that occur within
2462 expressions. We have to describe these references by a number and
2463 by name. The number is necessary for forward references during
2464 reading, and the name is necessary if the symbol already exists in
2465 the namespace and is not loaded again. */
2468 mio_component_ref (gfc_component **cp, gfc_symbol *sym)
2470 char name[GFC_MAX_SYMBOL_LEN + 1];
2474 p = mio_pointer_ref (cp);
2475 if (p->type == P_UNKNOWN)
2476 p->type = P_COMPONENT;
2478 if (iomode == IO_OUTPUT)
2479 mio_pool_string (&(*cp)->name);
2482 mio_internal_string (name);
2484 if (sym && sym->attr.is_class)
2485 sym = sym->components->ts.u.derived;
2487 /* It can happen that a component reference can be read before the
2488 associated derived type symbol has been loaded. Return now and
2489 wait for a later iteration of load_needed. */
2493 if (sym->components != NULL && p->u.pointer == NULL)
2495 /* Symbol already loaded, so search by name. */
2496 q = gfc_find_component (sym, name, true, true);
2499 associate_integer_pointer (p, q);
2502 /* Make sure this symbol will eventually be loaded. */
2503 p = find_pointer2 (sym);
2504 if (p->u.rsym.state == UNUSED)
2505 p->u.rsym.state = NEEDED;
2510 static void mio_namespace_ref (gfc_namespace **nsp);
2511 static void mio_formal_arglist (gfc_formal_arglist **formal);
2512 static void mio_typebound_proc (gfc_typebound_proc** proc);
2515 mio_component (gfc_component *c, int vtype)
2519 gfc_formal_arglist *formal;
2523 if (iomode == IO_OUTPUT)
2525 p = get_pointer (c);
2526 mio_integer (&p->integer);
2531 p = get_integer (n);
2532 associate_integer_pointer (p, c);
2535 if (p->type == P_UNKNOWN)
2536 p->type = P_COMPONENT;
2538 mio_pool_string (&c->name);
2539 mio_typespec (&c->ts);
2540 mio_array_spec (&c->as);
2542 mio_symbol_attribute (&c->attr);
2543 if (c->ts.type == BT_CLASS)
2544 c->attr.class_ok = 1;
2545 c->attr.access = MIO_NAME (gfc_access) (c->attr.access, access_types);
2548 mio_expr (&c->initializer);
2550 if (c->attr.proc_pointer)
2552 if (iomode == IO_OUTPUT)
2555 while (formal && !formal->sym)
2556 formal = formal->next;
2559 mio_namespace_ref (&formal->sym->ns);
2561 mio_namespace_ref (&c->formal_ns);
2565 mio_namespace_ref (&c->formal_ns);
2566 /* TODO: if (c->formal_ns)
2568 c->formal_ns->proc_name = c;
2573 mio_formal_arglist (&c->formal);
2575 mio_typebound_proc (&c->tb);
2583 mio_component_list (gfc_component **cp, int vtype)
2585 gfc_component *c, *tail;
2589 if (iomode == IO_OUTPUT)
2591 for (c = *cp; c; c = c->next)
2592 mio_component (c, vtype);
2601 if (peek_atom () == ATOM_RPAREN)
2604 c = gfc_get_component ();
2605 mio_component (c, vtype);
2621 mio_actual_arg (gfc_actual_arglist *a)
2624 mio_pool_string (&a->name);
2625 mio_expr (&a->expr);
2631 mio_actual_arglist (gfc_actual_arglist **ap)
2633 gfc_actual_arglist *a, *tail;
2637 if (iomode == IO_OUTPUT)
2639 for (a = *ap; a; a = a->next)
2649 if (peek_atom () != ATOM_LPAREN)
2652 a = gfc_get_actual_arglist ();
2668 /* Read and write formal argument lists. */
2671 mio_formal_arglist (gfc_formal_arglist **formal)
2673 gfc_formal_arglist *f, *tail;
2677 if (iomode == IO_OUTPUT)
2679 for (f = *formal; f; f = f->next)
2680 mio_symbol_ref (&f->sym);
2684 *formal = tail = NULL;
2686 while (peek_atom () != ATOM_RPAREN)
2688 f = gfc_get_formal_arglist ();
2689 mio_symbol_ref (&f->sym);
2691 if (*formal == NULL)
2704 /* Save or restore a reference to a symbol node. */
2707 mio_symbol_ref (gfc_symbol **symp)
2711 p = mio_pointer_ref (symp);
2712 if (p->type == P_UNKNOWN)
2715 if (iomode == IO_OUTPUT)
2717 if (p->u.wsym.state == UNREFERENCED)
2718 p->u.wsym.state = NEEDS_WRITE;
2722 if (p->u.rsym.state == UNUSED)
2723 p->u.rsym.state = NEEDED;
2729 /* Save or restore a reference to a symtree node. */
2732 mio_symtree_ref (gfc_symtree **stp)
2737 if (iomode == IO_OUTPUT)
2738 mio_symbol_ref (&(*stp)->n.sym);
2741 require_atom (ATOM_INTEGER);
2742 p = get_integer (atom_int);
2744 /* An unused equivalence member; make a symbol and a symtree
2746 if (in_load_equiv && p->u.rsym.symtree == NULL)
2748 /* Since this is not used, it must have a unique name. */
2749 p->u.rsym.symtree = gfc_get_unique_symtree (gfc_current_ns);
2751 /* Make the symbol. */
2752 if (p->u.rsym.sym == NULL)
2754 p->u.rsym.sym = gfc_new_symbol (p->u.rsym.true_name,
2756 p->u.rsym.sym->module = gfc_get_string (p->u.rsym.module);
2759 p->u.rsym.symtree->n.sym = p->u.rsym.sym;
2760 p->u.rsym.symtree->n.sym->refs++;
2761 p->u.rsym.referenced = 1;
2763 /* If the symbol is PRIVATE and in COMMON, load_commons will
2764 generate a fixup symbol, which must be associated. */
2766 resolve_fixups (p->fixup, p->u.rsym.sym);
2770 if (p->type == P_UNKNOWN)
2773 if (p->u.rsym.state == UNUSED)
2774 p->u.rsym.state = NEEDED;
2776 if (p->u.rsym.symtree != NULL)
2778 *stp = p->u.rsym.symtree;
2782 f = XCNEW (fixup_t);
2784 f->next = p->u.rsym.stfixup;
2785 p->u.rsym.stfixup = f;
2787 f->pointer = (void **) stp;
2794 mio_iterator (gfc_iterator **ip)
2800 if (iomode == IO_OUTPUT)
2807 if (peek_atom () == ATOM_RPAREN)
2813 *ip = gfc_get_iterator ();
2818 mio_expr (&iter->var);
2819 mio_expr (&iter->start);
2820 mio_expr (&iter->end);
2821 mio_expr (&iter->step);
2829 mio_constructor (gfc_constructor_base *cp)
2835 if (iomode == IO_OUTPUT)
2837 for (c = gfc_constructor_first (*cp); c; c = gfc_constructor_next (c))
2840 mio_expr (&c->expr);
2841 mio_iterator (&c->iterator);
2847 while (peek_atom () != ATOM_RPAREN)
2849 c = gfc_constructor_append_expr (cp, NULL, NULL);
2852 mio_expr (&c->expr);
2853 mio_iterator (&c->iterator);
2862 static const mstring ref_types[] = {
2863 minit ("ARRAY", REF_ARRAY),
2864 minit ("COMPONENT", REF_COMPONENT),
2865 minit ("SUBSTRING", REF_SUBSTRING),
2871 mio_ref (gfc_ref **rp)
2878 r->type = MIO_NAME (ref_type) (r->type, ref_types);
2883 mio_array_ref (&r->u.ar);
2887 mio_symbol_ref (&r->u.c.sym);
2888 mio_component_ref (&r->u.c.component, r->u.c.sym);
2892 mio_expr (&r->u.ss.start);
2893 mio_expr (&r->u.ss.end);
2894 mio_charlen (&r->u.ss.length);
2903 mio_ref_list (gfc_ref **rp)
2905 gfc_ref *ref, *head, *tail;
2909 if (iomode == IO_OUTPUT)
2911 for (ref = *rp; ref; ref = ref->next)
2918 while (peek_atom () != ATOM_RPAREN)
2921 head = tail = gfc_get_ref ();
2924 tail->next = gfc_get_ref ();
2938 /* Read and write an integer value. */
2941 mio_gmp_integer (mpz_t *integer)
2945 if (iomode == IO_INPUT)
2947 if (parse_atom () != ATOM_STRING)
2948 bad_module ("Expected integer string");
2950 mpz_init (*integer);
2951 if (mpz_set_str (*integer, atom_string, 10))
2952 bad_module ("Error converting integer");
2958 p = mpz_get_str (NULL, 10, *integer);
2959 write_atom (ATOM_STRING, p);
2966 mio_gmp_real (mpfr_t *real)
2971 if (iomode == IO_INPUT)
2973 if (parse_atom () != ATOM_STRING)
2974 bad_module ("Expected real string");
2977 mpfr_set_str (*real, atom_string, 16, GFC_RND_MODE);
2982 p = mpfr_get_str (NULL, &exponent, 16, 0, *real, GFC_RND_MODE);
2984 if (mpfr_nan_p (*real) || mpfr_inf_p (*real))
2986 write_atom (ATOM_STRING, p);
2991 atom_string = XCNEWVEC (char, strlen (p) + 20);
2993 sprintf (atom_string, "0.%s@%ld", p, exponent);
2995 /* Fix negative numbers. */
2996 if (atom_string[2] == '-')
2998 atom_string[0] = '-';
2999 atom_string[1] = '0';
3000 atom_string[2] = '.';
3003 write_atom (ATOM_STRING, atom_string);
3011 /* Save and restore the shape of an array constructor. */
3014 mio_shape (mpz_t **pshape, int rank)
3020 /* A NULL shape is represented by (). */
3023 if (iomode == IO_OUTPUT)
3035 if (t == ATOM_RPAREN)
3042 shape = gfc_get_shape (rank);
3046 for (n = 0; n < rank; n++)
3047 mio_gmp_integer (&shape[n]);
3053 static const mstring expr_types[] = {
3054 minit ("OP", EXPR_OP),
3055 minit ("FUNCTION", EXPR_FUNCTION),
3056 minit ("CONSTANT", EXPR_CONSTANT),
3057 minit ("VARIABLE", EXPR_VARIABLE),
3058 minit ("SUBSTRING", EXPR_SUBSTRING),
3059 minit ("STRUCTURE", EXPR_STRUCTURE),
3060 minit ("ARRAY", EXPR_ARRAY),
3061 minit ("NULL", EXPR_NULL),
3062 minit ("COMPCALL", EXPR_COMPCALL),
3066 /* INTRINSIC_ASSIGN is missing because it is used as an index for
3067 generic operators, not in expressions. INTRINSIC_USER is also
3068 replaced by the correct function name by the time we see it. */
3070 static const mstring intrinsics[] =
3072 minit ("UPLUS", INTRINSIC_UPLUS),
3073 minit ("UMINUS", INTRINSIC_UMINUS),
3074 minit ("PLUS", INTRINSIC_PLUS),
3075 minit ("MINUS", INTRINSIC_MINUS),
3076 minit ("TIMES", INTRINSIC_TIMES),
3077 minit ("DIVIDE", INTRINSIC_DIVIDE),
3078 minit ("POWER", INTRINSIC_POWER),
3079 minit ("CONCAT", INTRINSIC_CONCAT),
3080 minit ("AND", INTRINSIC_AND),
3081 minit ("OR", INTRINSIC_OR),
3082 minit ("EQV", INTRINSIC_EQV),
3083 minit ("NEQV", INTRINSIC_NEQV),
3084 minit ("EQ_SIGN", INTRINSIC_EQ),
3085 minit ("EQ", INTRINSIC_EQ_OS),
3086 minit ("NE_SIGN", INTRINSIC_NE),
3087 minit ("NE", INTRINSIC_NE_OS),
3088 minit ("GT_SIGN", INTRINSIC_GT),
3089 minit ("GT", INTRINSIC_GT_OS),
3090 minit ("GE_SIGN", INTRINSIC_GE),
3091 minit ("GE", INTRINSIC_GE_OS),
3092 minit ("LT_SIGN", INTRINSIC_LT),
3093 minit ("LT", INTRINSIC_LT_OS),
3094 minit ("LE_SIGN", INTRINSIC_LE),
3095 minit ("LE", INTRINSIC_LE_OS),
3096 minit ("NOT", INTRINSIC_NOT),
3097 minit ("PARENTHESES", INTRINSIC_PARENTHESES),
3102 /* Remedy a couple of situations where the gfc_expr's can be defective. */
3105 fix_mio_expr (gfc_expr *e)
3107 gfc_symtree *ns_st = NULL;
3110 if (iomode != IO_OUTPUT)
3115 /* If this is a symtree for a symbol that came from a contained module
3116 namespace, it has a unique name and we should look in the current
3117 namespace to see if the required, non-contained symbol is available
3118 yet. If so, the latter should be written. */
3119 if (e->symtree->n.sym && check_unique_name (e->symtree->name))
3121 const char *name = e->symtree->n.sym->name;
3122 if (e->symtree->n.sym->attr.flavor == FL_DERIVED)
3123 name = dt_upper_string (name);
3124 ns_st = gfc_find_symtree (gfc_current_ns->sym_root, name);
3127 /* On the other hand, if the existing symbol is the module name or the
3128 new symbol is a dummy argument, do not do the promotion. */
3129 if (ns_st && ns_st->n.sym
3130 && ns_st->n.sym->attr.flavor != FL_MODULE
3131 && !e->symtree->n.sym->attr.dummy)
3134 else if (e->expr_type == EXPR_FUNCTION && e->value.function.name)
3138 /* In some circumstances, a function used in an initialization
3139 expression, in one use associated module, can fail to be
3140 coupled to its symtree when used in a specification
3141 expression in another module. */
3142 fname = e->value.function.esym ? e->value.function.esym->name
3143 : e->value.function.isym->name;
3144 e->symtree = gfc_find_symtree (gfc_current_ns->sym_root, fname);
3149 /* This is probably a reference to a private procedure from another
3150 module. To prevent a segfault, make a generic with no specific
3151 instances. If this module is used, without the required
3152 specific coming from somewhere, the appropriate error message
3154 gfc_get_symbol (fname, gfc_current_ns, &sym);
3155 sym->attr.flavor = FL_PROCEDURE;
3156 sym->attr.generic = 1;
3157 e->symtree = gfc_find_symtree (gfc_current_ns->sym_root, fname);
3158 gfc_commit_symbol (sym);
3163 /* Read and write expressions. The form "()" is allowed to indicate a
3167 mio_expr (gfc_expr **ep)
3175 if (iomode == IO_OUTPUT)
3184 MIO_NAME (expr_t) (e->expr_type, expr_types);
3189 if (t == ATOM_RPAREN)
3196 bad_module ("Expected expression type");
3198 e = *ep = gfc_get_expr ();
3199 e->where = gfc_current_locus;
3200 e->expr_type = (expr_t) find_enum (expr_types);
3203 mio_typespec (&e->ts);
3204 mio_integer (&e->rank);
3208 switch (e->expr_type)
3212 = MIO_NAME (gfc_intrinsic_op) (e->value.op.op, intrinsics);
3214 switch (e->value.op.op)
3216 case INTRINSIC_UPLUS:
3217 case INTRINSIC_UMINUS:
3219 case INTRINSIC_PARENTHESES:
3220 mio_expr (&e->value.op.op1);
3223 case INTRINSIC_PLUS:
3224 case INTRINSIC_MINUS:
3225 case INTRINSIC_TIMES:
3226 case INTRINSIC_DIVIDE:
3227 case INTRINSIC_POWER:
3228 case INTRINSIC_CONCAT:
3232 case INTRINSIC_NEQV:
3234 case INTRINSIC_EQ_OS:
3236 case INTRINSIC_NE_OS:
3238 case INTRINSIC_GT_OS:
3240 case INTRINSIC_GE_OS:
3242 case INTRINSIC_LT_OS:
3244 case INTRINSIC_LE_OS:
3245 mio_expr (&e->value.op.op1);
3246 mio_expr (&e->value.op.op2);
3250 bad_module ("Bad operator");
3256 mio_symtree_ref (&e->symtree);
3257 mio_actual_arglist (&e->value.function.actual);
3259 if (iomode == IO_OUTPUT)
3261 e->value.function.name
3262 = mio_allocated_string (e->value.function.name);
3263 flag = e->value.function.esym != NULL;
3264 mio_integer (&flag);
3266 mio_symbol_ref (&e->value.function.esym);
3268 write_atom (ATOM_STRING, e->value.function.isym->name);
3272 require_atom (ATOM_STRING);
3273 e->value.function.name = gfc_get_string (atom_string);
3276 mio_integer (&flag);
3278 mio_symbol_ref (&e->value.function.esym);
3281 require_atom (ATOM_STRING);
3282 e->value.function.isym = gfc_find_function (atom_string);
3290 mio_symtree_ref (&e->symtree);
3291 mio_ref_list (&e->ref);
3294 case EXPR_SUBSTRING:
3295 e->value.character.string
3296 = CONST_CAST (gfc_char_t *,
3297 mio_allocated_wide_string (e->value.character.string,
3298 e->value.character.length));
3299 mio_ref_list (&e->ref);
3302 case EXPR_STRUCTURE:
3304 mio_constructor (&e->value.constructor);
3305 mio_shape (&e->shape, e->rank);
3312 mio_gmp_integer (&e->value.integer);
3316 gfc_set_model_kind (e->ts.kind);
3317 mio_gmp_real (&e->value.real);
3321 gfc_set_model_kind (e->ts.kind);
3322 mio_gmp_real (&mpc_realref (e->value.complex));
3323 mio_gmp_real (&mpc_imagref (e->value.complex));
3327 mio_integer (&e->value.logical);
3331 mio_integer (&e->value.character.length);
3332 e->value.character.string
3333 = CONST_CAST (gfc_char_t *,
3334 mio_allocated_wide_string (e->value.character.string,
3335 e->value.character.length));
3339 bad_module ("Bad type in constant expression");
3357 /* Read and write namelists. */
3360 mio_namelist (gfc_symbol *sym)
3362 gfc_namelist *n, *m;
3363 const char *check_name;
3367 if (iomode == IO_OUTPUT)
3369 for (n = sym->namelist; n; n = n->next)
3370 mio_symbol_ref (&n->sym);
3374 /* This departure from the standard is flagged as an error.
3375 It does, in fact, work correctly. TODO: Allow it
3377 if (sym->attr.flavor == FL_NAMELIST)
3379 check_name = find_use_name (sym->name, false);
3380 if (check_name && strcmp (check_name, sym->name) != 0)
3381 gfc_error ("Namelist %s cannot be renamed by USE "
3382 "association to %s", sym->name, check_name);
3386 while (peek_atom () != ATOM_RPAREN)
3388 n = gfc_get_namelist ();
3389 mio_symbol_ref (&n->sym);
3391 if (sym->namelist == NULL)
3398 sym->namelist_tail = m;
3405 /* Save/restore lists of gfc_interface structures. When loading an
3406 interface, we are really appending to the existing list of
3407 interfaces. Checking for duplicate and ambiguous interfaces has to
3408 be done later when all symbols have been loaded. */
3411 mio_interface_rest (gfc_interface **ip)
3413 gfc_interface *tail, *p;
3414 pointer_info *pi = NULL;
3416 if (iomode == IO_OUTPUT)
3419 for (p = *ip; p; p = p->next)
3420 mio_symbol_ref (&p->sym);
3435 if (peek_atom () == ATOM_RPAREN)
3438 p = gfc_get_interface ();
3439 p->where = gfc_current_locus;
3440 pi = mio_symbol_ref (&p->sym);
3456 /* Save/restore a nameless operator interface. */
3459 mio_interface (gfc_interface **ip)
3462 mio_interface_rest (ip);
3466 /* Save/restore a named operator interface. */
3469 mio_symbol_interface (const char **name, const char **module,
3473 mio_pool_string (name);
3474 mio_pool_string (module);
3475 mio_interface_rest (ip);
3480 mio_namespace_ref (gfc_namespace **nsp)
3485 p = mio_pointer_ref (nsp);
3487 if (p->type == P_UNKNOWN)
3488 p->type = P_NAMESPACE;
3490 if (iomode == IO_INPUT && p->integer != 0)
3492 ns = (gfc_namespace *) p->u.pointer;
3495 ns = gfc_get_namespace (NULL, 0);
3496 associate_integer_pointer (p, ns);
3504 /* Save/restore the f2k_derived namespace of a derived-type symbol. */
3506 static gfc_namespace* current_f2k_derived;
3509 mio_typebound_proc (gfc_typebound_proc** proc)
3512 int overriding_flag;
3514 if (iomode == IO_INPUT)
3516 *proc = gfc_get_typebound_proc (NULL);
3517 (*proc)->where = gfc_current_locus;
3523 (*proc)->access = MIO_NAME (gfc_access) ((*proc)->access, access_types);
3525 /* IO the NON_OVERRIDABLE/DEFERRED combination. */
3526 gcc_assert (!((*proc)->deferred && (*proc)->non_overridable));
3527 overriding_flag = ((*proc)->deferred << 1) | (*proc)->non_overridable;
3528 overriding_flag = mio_name (overriding_flag, binding_overriding);
3529 (*proc)->deferred = ((overriding_flag & 2) != 0);
3530 (*proc)->non_overridable = ((overriding_flag & 1) != 0);
3531 gcc_assert (!((*proc)->deferred && (*proc)->non_overridable));
3533 (*proc)->nopass = mio_name ((*proc)->nopass, binding_passing);
3534 (*proc)->is_generic = mio_name ((*proc)->is_generic, binding_generic);
3535 (*proc)->ppc = mio_name((*proc)->ppc, binding_ppc);
3537 mio_pool_string (&((*proc)->pass_arg));
3539 flag = (int) (*proc)->pass_arg_num;
3540 mio_integer (&flag);
3541 (*proc)->pass_arg_num = (unsigned) flag;
3543 if ((*proc)->is_generic)
3549 if (iomode == IO_OUTPUT)
3550 for (g = (*proc)->u.generic; g; g = g->next)
3551 mio_allocated_string (g->specific_st->name);
3554 (*proc)->u.generic = NULL;
3555 while (peek_atom () != ATOM_RPAREN)
3557 gfc_symtree** sym_root;
3559 g = gfc_get_tbp_generic ();
3562 require_atom (ATOM_STRING);
3563 sym_root = ¤t_f2k_derived->tb_sym_root;
3564 g->specific_st = gfc_get_tbp_symtree (sym_root, atom_string);
3567 g->next = (*proc)->u.generic;
3568 (*proc)->u.generic = g;
3574 else if (!(*proc)->ppc)
3575 mio_symtree_ref (&(*proc)->u.specific);
3580 /* Walker-callback function for this purpose. */
3582 mio_typebound_symtree (gfc_symtree* st)
3584 if (iomode == IO_OUTPUT && !st->n.tb)
3587 if (iomode == IO_OUTPUT)
3590 mio_allocated_string (st->name);
3592 /* For IO_INPUT, the above is done in mio_f2k_derived. */
3594 mio_typebound_proc (&st->n.tb);
3598 /* IO a full symtree (in all depth). */
3600 mio_full_typebound_tree (gfc_symtree** root)
3604 if (iomode == IO_OUTPUT)
3605 gfc_traverse_symtree (*root, &mio_typebound_symtree);
3608 while (peek_atom () == ATOM_LPAREN)
3614 require_atom (ATOM_STRING);
3615 st = gfc_get_tbp_symtree (root, atom_string);
3618 mio_typebound_symtree (st);
3626 mio_finalizer (gfc_finalizer **f)
3628 if (iomode == IO_OUTPUT)
3631 gcc_assert ((*f)->proc_tree); /* Should already be resolved. */
3632 mio_symtree_ref (&(*f)->proc_tree);
3636 *f = gfc_get_finalizer ();
3637 (*f)->where = gfc_current_locus; /* Value should not matter. */
3640 mio_symtree_ref (&(*f)->proc_tree);
3641 (*f)->proc_sym = NULL;
3646 mio_f2k_derived (gfc_namespace *f2k)
3648 current_f2k_derived = f2k;
3650 /* Handle the list of finalizer procedures. */
3652 if (iomode == IO_OUTPUT)
3655 for (f = f2k->finalizers; f; f = f->next)
3660 f2k->finalizers = NULL;
3661 while (peek_atom () != ATOM_RPAREN)
3663 gfc_finalizer *cur = NULL;
3664 mio_finalizer (&cur);
3665 cur->next = f2k->finalizers;
3666 f2k->finalizers = cur;
3671 /* Handle type-bound procedures. */
3672 mio_full_typebound_tree (&f2k->tb_sym_root);
3674 /* Type-bound user operators. */
3675 mio_full_typebound_tree (&f2k->tb_uop_root);
3677 /* Type-bound intrinsic operators. */
3679 if (iomode == IO_OUTPUT)
3682 for (op = GFC_INTRINSIC_BEGIN; op != GFC_INTRINSIC_END; ++op)
3684 gfc_intrinsic_op realop;
3686 if (op == INTRINSIC_USER || !f2k->tb_op[op])
3690 realop = (gfc_intrinsic_op) op;
3691 mio_intrinsic_op (&realop);
3692 mio_typebound_proc (&f2k->tb_op[op]);
3697 while (peek_atom () != ATOM_RPAREN)
3699 gfc_intrinsic_op op = GFC_INTRINSIC_BEGIN; /* Silence GCC. */
3702 mio_intrinsic_op (&op);
3703 mio_typebound_proc (&f2k->tb_op[op]);
3710 mio_full_f2k_derived (gfc_symbol *sym)
3714 if (iomode == IO_OUTPUT)
3716 if (sym->f2k_derived)
3717 mio_f2k_derived (sym->f2k_derived);
3721 if (peek_atom () != ATOM_RPAREN)
3723 sym->f2k_derived = gfc_get_namespace (NULL, 0);
3724 mio_f2k_derived (sym->f2k_derived);
3727 gcc_assert (!sym->f2k_derived);
3734 /* Unlike most other routines, the address of the symbol node is already
3735 fixed on input and the name/module has already been filled in. */
3738 mio_symbol (gfc_symbol *sym)
3740 int intmod = INTMOD_NONE;
3744 mio_symbol_attribute (&sym->attr);
3745 mio_typespec (&sym->ts);
3746 if (sym->ts.type == BT_CLASS)
3747 sym->attr.class_ok = 1;
3749 if (iomode == IO_OUTPUT)
3750 mio_namespace_ref (&sym->formal_ns);
3753 mio_namespace_ref (&sym->formal_ns);
3756 sym->formal_ns->proc_name = sym;
3761 /* Save/restore common block links. */
3762 mio_symbol_ref (&sym->common_next);
3764 mio_formal_arglist (&sym->formal);
3766 if (sym->attr.flavor == FL_PARAMETER)
3767 mio_expr (&sym->value);
3769 mio_array_spec (&sym->as);
3771 mio_symbol_ref (&sym->result);
3773 if (sym->attr.cray_pointee)
3774 mio_symbol_ref (&sym->cp_pointer);
3776 /* Note that components are always saved, even if they are supposed
3777 to be private. Component access is checked during searching. */
3779 mio_component_list (&sym->components, sym->attr.vtype);
3781 if (sym->components != NULL)
3782 sym->component_access
3783 = MIO_NAME (gfc_access) (sym->component_access, access_types);
3785 /* Load/save the f2k_derived namespace of a derived-type symbol. */
3786 mio_full_f2k_derived (sym);
3790 /* Add the fields that say whether this is from an intrinsic module,
3791 and if so, what symbol it is within the module. */
3792 /* mio_integer (&(sym->from_intmod)); */
3793 if (iomode == IO_OUTPUT)
3795 intmod = sym->from_intmod;
3796 mio_integer (&intmod);
3800 mio_integer (&intmod);
3801 sym->from_intmod = (intmod_id) intmod;
3804 mio_integer (&(sym->intmod_sym_id));
3806 if (sym->attr.flavor == FL_DERIVED)
3807 mio_integer (&(sym->hash_value));
3813 /************************* Top level subroutines *************************/
3815 /* Given a root symtree node and a symbol, try to find a symtree that
3816 references the symbol that is not a unique name. */
3818 static gfc_symtree *
3819 find_symtree_for_symbol (gfc_symtree *st, gfc_symbol *sym)
3821 gfc_symtree *s = NULL;
3826 s = find_symtree_for_symbol (st->right, sym);
3829 s = find_symtree_for_symbol (st->left, sym);
3833 if (st->n.sym == sym && !check_unique_name (st->name))
3840 /* A recursive function to look for a specific symbol by name and by
3841 module. Whilst several symtrees might point to one symbol, its
3842 is sufficient for the purposes here than one exist. Note that
3843 generic interfaces are distinguished as are symbols that have been
3844 renamed in another module. */
3845 static gfc_symtree *
3846 find_symbol (gfc_symtree *st, const char *name,
3847 const char *module, int generic)
3850 gfc_symtree *retval, *s;
3852 if (st == NULL || st->n.sym == NULL)
3855 c = strcmp (name, st->n.sym->name);
3856 if (c == 0 && st->n.sym->module
3857 && strcmp (module, st->n.sym->module) == 0
3858 && !check_unique_name (st->name))
3860 s = gfc_find_symtree (gfc_current_ns->sym_root, name);
3862 /* Detect symbols that are renamed by use association in another
3863 module by the absence of a symtree and null attr.use_rename,
3864 since the latter is not transmitted in the module file. */
3865 if (((!generic && !st->n.sym->attr.generic)
3866 || (generic && st->n.sym->attr.generic))
3867 && !(s == NULL && !st->n.sym->attr.use_rename))
3871 retval = find_symbol (st->left, name, module, generic);
3874 retval = find_symbol (st->right, name, module, generic);
3880 /* Skip a list between balanced left and right parens. */
3890 switch (parse_atom ())
3913 /* Load operator interfaces from the module. Interfaces are unusual
3914 in that they attach themselves to existing symbols. */
3917 load_operator_interfaces (void)
3920 char name[GFC_MAX_SYMBOL_LEN + 1], module[GFC_MAX_SYMBOL_LEN + 1];
3922 pointer_info *pi = NULL;
3927 while (peek_atom () != ATOM_RPAREN)
3931 mio_internal_string (name);
3932 mio_internal_string (module);
3934 n = number_use_names (name, true);
3937 for (i = 1; i <= n; i++)
3939 /* Decide if we need to load this one or not. */
3940 p = find_use_name_n (name, &i, true);
3944 while (parse_atom () != ATOM_RPAREN);
3950 uop = gfc_get_uop (p);
3951 pi = mio_interface_rest (&uop->op);
3955 if (gfc_find_uop (p, NULL))
3957 uop = gfc_get_uop (p);
3958 uop->op = gfc_get_interface ();
3959 uop->op->where = gfc_current_locus;
3960 add_fixup (pi->integer, &uop->op->sym);
3969 /* Load interfaces from the module. Interfaces are unusual in that
3970 they attach themselves to existing symbols. */
3973 load_generic_interfaces (void)
3976 char name[GFC_MAX_SYMBOL_LEN + 1], module[GFC_MAX_SYMBOL_LEN + 1];
3978 gfc_interface *generic = NULL, *gen = NULL;
3980 bool ambiguous_set = false;
3984 while (peek_atom () != ATOM_RPAREN)
3988 mio_internal_string (name);
3989 mio_internal_string (module);
3991 n = number_use_names (name, false);
3992 renamed = n ? 1 : 0;
3995 for (i = 1; i <= n; i++)
3998 /* Decide if we need to load this one or not. */
3999 p = find_use_name_n (name, &i, false);
4001 st = find_symbol (gfc_current_ns->sym_root,
4002 name, module_name, 1);
4004 if (!p || gfc_find_symbol (p, NULL, 0, &sym))
4006 /* Skip the specific names for these cases. */
4007 while (i == 1 && parse_atom () != ATOM_RPAREN);
4012 /* If the symbol exists already and is being USEd without being
4013 in an ONLY clause, do not load a new symtree(11.3.2). */
4014 if (!only_flag && st)
4019 /* Make the symbol inaccessible if it has been added by a USE
4020 statement without an ONLY(11.3.2). */
4022 && !st->n.sym->attr.use_only
4023 && !st->n.sym->attr.use_rename
4024 && strcmp (st->n.sym->module, module_name) == 0)
4027 gfc_delete_symtree (&gfc_current_ns->sym_root, name);
4028 st = gfc_get_unique_symtree (gfc_current_ns);
4035 if (strcmp (st->name, p) != 0)
4037 st = gfc_new_symtree (&gfc_current_ns->sym_root, p);
4043 /* Since we haven't found a valid generic interface, we had
4047 gfc_get_symbol (p, NULL, &sym);
4048 sym->name = gfc_get_string (name);
4049 sym->module = gfc_get_string (module_name);
4050 sym->attr.flavor = FL_PROCEDURE;
4051 sym->attr.generic = 1;
4052 sym->attr.use_assoc = 1;
4057 /* Unless sym is a generic interface, this reference
4060 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
4064 if (st && !sym->attr.generic
4067 && strcmp(module, sym->module))
4069 ambiguous_set = true;
4074 sym->attr.use_only = only_flag;
4075 sym->attr.use_rename = renamed;
4079 mio_interface_rest (&sym->generic);
4080 generic = sym->generic;
4082 else if (!sym->generic)
4084 sym->generic = generic;
4085 sym->attr.generic_copy = 1;
4088 /* If a procedure that is not generic has generic interfaces
4089 that include itself, it is generic! We need to take care
4090 to retain symbols ambiguous that were already so. */
4091 if (sym->attr.use_assoc
4092 && !sym->attr.generic
4093 && sym->attr.flavor == FL_PROCEDURE)
4095 for (gen = generic; gen; gen = gen->next)
4097 if (gen->sym == sym)
4099 sym->attr.generic = 1;
4114 /* Load common blocks. */
4119 char name[GFC_MAX_SYMBOL_LEN + 1];
4124 while (peek_atom () != ATOM_RPAREN)
4128 mio_internal_string (name);
4130 p = gfc_get_common (name, 1);
4132 mio_symbol_ref (&p->head);
4133 mio_integer (&flags);
4137 p->threadprivate = 1;
4140 /* Get whether this was a bind(c) common or not. */
4141 mio_integer (&p->is_bind_c);
4142 /* Get the binding label. */
4143 mio_internal_string (p->binding_label);
4152 /* Load equivalences. The flag in_load_equiv informs mio_expr_ref of this
4153 so that unused variables are not loaded and so that the expression can
4159 gfc_equiv *head, *tail, *end, *eq;
4163 in_load_equiv = true;
4165 end = gfc_current_ns->equiv;
4166 while (end != NULL && end->next != NULL)
4169 while (peek_atom () != ATOM_RPAREN) {
4173 while(peek_atom () != ATOM_RPAREN)
4176 head = tail = gfc_get_equiv ();
4179 tail->eq = gfc_get_equiv ();
4183 mio_pool_string (&tail->module);
4184 mio_expr (&tail->expr);
4187 /* Unused equivalence members have a unique name. In addition, it
4188 must be checked that the symbols are from the same module. */
4190 for (eq = head; eq; eq = eq->eq)
4192 if (eq->expr->symtree->n.sym->module
4193 && head->expr->symtree->n.sym->module
4194 && strcmp (head->expr->symtree->n.sym->module,
4195 eq->expr->symtree->n.sym->module) == 0
4196 && !check_unique_name (eq->expr->symtree->name))
4205 for (eq = head; eq; eq = head)
4208 gfc_free_expr (eq->expr);
4214 gfc_current_ns->equiv = head;
4225 in_load_equiv = false;
4229 /* This function loads the sym_root of f2k_derived with the extensions to
4230 the derived type. */
4232 load_derived_extensions (void)
4235 gfc_symbol *derived;
4239 char name[GFC_MAX_SYMBOL_LEN + 1];
4240 char module[GFC_MAX_SYMBOL_LEN + 1];
4244 while (peek_atom () != ATOM_RPAREN)
4247 mio_integer (&symbol);
4248 info = get_integer (symbol);
4249 derived = info->u.rsym.sym;
4251 /* This one is not being loaded. */
4252 if (!info || !derived)
4254 while (peek_atom () != ATOM_RPAREN)
4259 gcc_assert (derived->attr.flavor == FL_DERIVED);
4260 if (derived->f2k_derived == NULL)
4261 derived->f2k_derived = gfc_get_namespace (NULL, 0);
4263 while (peek_atom () != ATOM_RPAREN)
4266 mio_internal_string (name);
4267 mio_internal_string (module);
4269 /* Only use one use name to find the symbol. */
4271 p = find_use_name_n (name, &j, false);
4274 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
4276 st = gfc_find_symtree (derived->f2k_derived->sym_root, name);
4279 /* Only use the real name in f2k_derived to ensure a single
4281 st = gfc_new_symtree (&derived->f2k_derived->sym_root, name);
4294 /* Recursive function to traverse the pointer_info tree and load a
4295 needed symbol. We return nonzero if we load a symbol and stop the
4296 traversal, because the act of loading can alter the tree. */
4299 load_needed (pointer_info *p)
4310 rv |= load_needed (p->left);
4311 rv |= load_needed (p->right);
4313 if (p->type != P_SYMBOL || p->u.rsym.state != NEEDED)
4316 p->u.rsym.state = USED;
4318 set_module_locus (&p->u.rsym.where);
4320 sym = p->u.rsym.sym;
4323 q = get_integer (p->u.rsym.ns);
4325 ns = (gfc_namespace *) q->u.pointer;
4328 /* Create an interface namespace if necessary. These are
4329 the namespaces that hold the formal parameters of module
4332 ns = gfc_get_namespace (NULL, 0);
4333 associate_integer_pointer (q, ns);
4336 /* Use the module sym as 'proc_name' so that gfc_get_symbol_decl
4337 doesn't go pear-shaped if the symbol is used. */
4339 gfc_find_symbol (p->u.rsym.module, gfc_current_ns,
4342 sym = gfc_new_symbol (p->u.rsym.true_name, ns);
4343 sym->name = dt_lower_string (p->u.rsym.true_name);
4344 sym->module = gfc_get_string (p->u.rsym.module);
4345 strcpy (sym->binding_label, p->u.rsym.binding_label);
4347 associate_integer_pointer (p, sym);
4351 sym->attr.use_assoc = 1;
4353 sym->attr.use_only = 1;
4354 if (p->u.rsym.renamed)
4355 sym->attr.use_rename = 1;
4361 /* Recursive function for cleaning up things after a module has been read. */
4364 read_cleanup (pointer_info *p)
4372 read_cleanup (p->left);
4373 read_cleanup (p->right);
4375 if (p->type == P_SYMBOL && p->u.rsym.state == USED && !p->u.rsym.referenced)
4378 /* Add hidden symbols to the symtree. */
4379 q = get_integer (p->u.rsym.ns);
4380 ns = (gfc_namespace *) q->u.pointer;
4382 if (!p->u.rsym.sym->attr.vtype
4383 && !p->u.rsym.sym->attr.vtab)
4384 st = gfc_get_unique_symtree (ns);
4387 /* There is no reason to use 'unique_symtrees' for vtabs or
4388 vtypes - their name is fine for a symtree and reduces the
4389 namespace pollution. */
4390 st = gfc_find_symtree (ns->sym_root, p->u.rsym.sym->name);
4392 st = gfc_new_symtree (&ns->sym_root, p->u.rsym.sym->name);
4395 st->n.sym = p->u.rsym.sym;
4398 /* Fixup any symtree references. */
4399 p->u.rsym.symtree = st;
4400 resolve_fixups (p->u.rsym.stfixup, st);
4401 p->u.rsym.stfixup = NULL;
4404 /* Free unused symbols. */
4405 if (p->type == P_SYMBOL && p->u.rsym.state == UNUSED)
4406 gfc_free_symbol (p->u.rsym.sym);
4410 /* It is not quite enough to check for ambiguity in the symbols by
4411 the loaded symbol and the new symbol not being identical. */
4413 check_for_ambiguous (gfc_symbol *st_sym, pointer_info *info)
4417 symbol_attribute attr;
4419 if (st_sym->ns->proc_name && st_sym->name == st_sym->ns->proc_name->name)
4421 gfc_error ("'%s' of module '%s', imported at %C, is also the name of the "
4422 "current program unit", st_sym->name, module_name);
4426 rsym = info->u.rsym.sym;
4430 if (st_sym->attr.vtab || st_sym->attr.vtype)
4433 /* If the existing symbol is generic from a different module and
4434 the new symbol is generic there can be no ambiguity. */
4435 if (st_sym->attr.generic
4437 && strcmp (st_sym->module, module_name))
4439 /* The new symbol's attributes have not yet been read. Since
4440 we need attr.generic, read it directly. */
4441 get_module_locus (&locus);
4442 set_module_locus (&info->u.rsym.where);
4445 mio_symbol_attribute (&attr);
4446 set_module_locus (&locus);
4455 /* Read a module file. */
4460 module_locus operator_interfaces, user_operators, extensions;
4462 char name[GFC_MAX_SYMBOL_LEN + 1];
4464 int ambiguous, j, nuse, symbol;
4465 pointer_info *info, *q;
4470 get_module_locus (&operator_interfaces); /* Skip these for now. */
4473 get_module_locus (&user_operators);
4477 /* Skip commons, equivalences and derived type extensions for now. */
4481 get_module_locus (&extensions);
4486 /* Create the fixup nodes for all the symbols. */
4488 while (peek_atom () != ATOM_RPAREN)
4490 require_atom (ATOM_INTEGER);
4491 info = get_integer (atom_int);
4493 info->type = P_SYMBOL;
4494 info->u.rsym.state = UNUSED;
4496 mio_internal_string (info->u.rsym.true_name);
4497 mio_internal_string (info->u.rsym.module);
4498 mio_internal_string (info->u.rsym.binding_label);
4501 require_atom (ATOM_INTEGER);
4502 info->u.rsym.ns = atom_int;
4504 get_module_locus (&info->u.rsym.where);
4507 /* See if the symbol has already been loaded by a previous module.
4508 If so, we reference the existing symbol and prevent it from
4509 being loaded again. This should not happen if the symbol being
4510 read is an index for an assumed shape dummy array (ns != 1). */
4512 sym = find_true_name (info->u.rsym.true_name, info->u.rsym.module);
4515 || (sym->attr.flavor == FL_VARIABLE && info->u.rsym.ns !=1))
4518 info->u.rsym.state = USED;
4519 info->u.rsym.sym = sym;
4521 /* Some symbols do not have a namespace (eg. formal arguments),
4522 so the automatic "unique symtree" mechanism must be suppressed
4523 by marking them as referenced. */
4524 q = get_integer (info->u.rsym.ns);
4525 if (q->u.pointer == NULL)
4527 info->u.rsym.referenced = 1;
4531 /* If possible recycle the symtree that references the symbol.
4532 If a symtree is not found and the module does not import one,
4533 a unique-name symtree is found by read_cleanup. */
4534 st = find_symtree_for_symbol (gfc_current_ns->sym_root, sym);
4537 info->u.rsym.symtree = st;
4538 info->u.rsym.referenced = 1;
4544 /* Parse the symtree lists. This lets us mark which symbols need to
4545 be loaded. Renaming is also done at this point by replacing the
4550 while (peek_atom () != ATOM_RPAREN)
4552 mio_internal_string (name);
4553 mio_integer (&ambiguous);
4554 mio_integer (&symbol);
4556 info = get_integer (symbol);
4558 /* See how many use names there are. If none, go through the start
4559 of the loop at least once. */
4560 nuse = number_use_names (name, false);
4561 info->u.rsym.renamed = nuse ? 1 : 0;
4566 for (j = 1; j <= nuse; j++)
4568 /* Get the jth local name for this symbol. */
4569 p = find_use_name_n (name, &j, false);
4571 if (p == NULL && strcmp (name, module_name) == 0)
4574 /* Exception: Always import vtabs & vtypes. */
4575 if (p == NULL && (strncmp (name, "__vtab_", 5) == 0
4576 || strncmp (name, "__vtype_", 6) == 0))
4579 /* Skip symtree nodes not in an ONLY clause, unless there
4580 is an existing symtree loaded from another USE statement. */
4583 st = gfc_find_symtree (gfc_current_ns->sym_root, name);
4585 info->u.rsym.symtree = st;
4589 /* If a symbol of the same name and module exists already,
4590 this symbol, which is not in an ONLY clause, must not be
4591 added to the namespace(11.3.2). Note that find_symbol
4592 only returns the first occurrence that it finds. */
4593 if (!only_flag && !info->u.rsym.renamed
4594 && strcmp (name, module_name) != 0
4595 && find_symbol (gfc_current_ns->sym_root, name,
4599 st = gfc_find_symtree (gfc_current_ns->sym_root, p);
4603 /* Check for ambiguous symbols. */
4604 if (check_for_ambiguous (st->n.sym, info))
4606 info->u.rsym.symtree = st;
4610 st = gfc_find_symtree (gfc_current_ns->sym_root, name);
4612 /* Delete the symtree if the symbol has been added by a USE
4613 statement without an ONLY(11.3.2). Remember that the rsym
4614 will be the same as the symbol found in the symtree, for
4616 if (st && (only_flag || info->u.rsym.renamed)
4617 && !st->n.sym->attr.use_only
4618 && !st->n.sym->attr.use_rename
4619 && info->u.rsym.sym == st->n.sym)
4620 gfc_delete_symtree (&gfc_current_ns->sym_root, name);
4622 /* Create a symtree node in the current namespace for this
4624 st = check_unique_name (p)
4625 ? gfc_get_unique_symtree (gfc_current_ns)
4626 : gfc_new_symtree (&gfc_current_ns->sym_root, p);
4627 st->ambiguous = ambiguous;
4629 sym = info->u.rsym.sym;
4631 /* Create a symbol node if it doesn't already exist. */
4634 info->u.rsym.sym = gfc_new_symbol (info->u.rsym.true_name,
4636 info->u.rsym.sym->name = dt_lower_string (info->u.rsym.true_name);
4637 sym = info->u.rsym.sym;
4638 sym->module = gfc_get_string (info->u.rsym.module);
4640 /* TODO: hmm, can we test this? Do we know it will be
4641 initialized to zeros? */
4642 if (info->u.rsym.binding_label[0] != '\0')
4643 strcpy (sym->binding_label, info->u.rsym.binding_label);
4649 if (strcmp (name, p) != 0)
4650 sym->attr.use_rename = 1;
4652 /* We need to set the only_flag here so that symbols from the
4653 same USE...ONLY but earlier are not deleted from the tree in
4654 the gfc_delete_symtree above. */
4655 sym->attr.use_only = only_flag;
4657 /* Store the symtree pointing to this symbol. */
4658 info->u.rsym.symtree = st;
4660 if (info->u.rsym.state == UNUSED)
4661 info->u.rsym.state = NEEDED;
4662 info->u.rsym.referenced = 1;
4669 /* Load intrinsic operator interfaces. */
4670 set_module_locus (&operator_interfaces);
4673 for (i = GFC_INTRINSIC_BEGIN; i != GFC_INTRINSIC_END; i++)
4675 if (i == INTRINSIC_USER)
4680 u = find_use_operator ((gfc_intrinsic_op) i);
4691 mio_interface (&gfc_current_ns->op[i]);
4696 /* Load generic and user operator interfaces. These must follow the
4697 loading of symtree because otherwise symbols can be marked as
4700 set_module_locus (&user_operators);
4702 load_operator_interfaces ();
4703 load_generic_interfaces ();
4708 /* At this point, we read those symbols that are needed but haven't
4709 been loaded yet. If one symbol requires another, the other gets
4710 marked as NEEDED if its previous state was UNUSED. */
4712 while (load_needed (pi_root));
4714 /* Make sure all elements of the rename-list were found in the module. */
4716 for (u = gfc_rename_list; u; u = u->next)
4721 if (u->op == INTRINSIC_NONE)
4723 gfc_error ("Symbol '%s' referenced at %L not found in module '%s'",
4724 u->use_name, &u->where, module_name);
4728 if (u->op == INTRINSIC_USER)
4730 gfc_error ("User operator '%s' referenced at %L not found "
4731 "in module '%s'", u->use_name, &u->where, module_name);
4735 gfc_error ("Intrinsic operator '%s' referenced at %L not found "
4736 "in module '%s'", gfc_op2string (u->op), &u->where,
4740 /* Now we should be in a position to fill f2k_derived with derived type
4741 extensions, since everything has been loaded. */
4742 set_module_locus (&extensions);
4743 load_derived_extensions ();
4745 /* Clean up symbol nodes that were never loaded, create references
4746 to hidden symbols. */
4748 read_cleanup (pi_root);
4752 /* Given an access type that is specific to an entity and the default
4753 access, return nonzero if the entity is publicly accessible. If the
4754 element is declared as PUBLIC, then it is public; if declared
4755 PRIVATE, then private, and otherwise it is public unless the default
4756 access in this context has been declared PRIVATE. */
4759 check_access (gfc_access specific_access, gfc_access default_access)
4761 if (specific_access == ACCESS_PUBLIC)
4763 if (specific_access == ACCESS_PRIVATE)
4766 if (gfc_option.flag_module_private)
4767 return default_access == ACCESS_PUBLIC;
4769 return default_access != ACCESS_PRIVATE;
4774 gfc_check_symbol_access (gfc_symbol *sym)
4776 if (sym->attr.vtab || sym->attr.vtype)
4779 return check_access (sym->attr.access, sym->ns->default_access);
4783 /* A structure to remember which commons we've already written. */
4785 struct written_common
4787 BBT_HEADER(written_common);
4788 const char *name, *label;
4791 static struct written_common *written_commons = NULL;
4793 /* Comparison function used for balancing the binary tree. */
4796 compare_written_commons (void *a1, void *b1)
4798 const char *aname = ((struct written_common *) a1)->name;
4799 const char *alabel = ((struct written_common *) a1)->label;
4800 const char *bname = ((struct written_common *) b1)->name;
4801 const char *blabel = ((struct written_common *) b1)->label;
4802 int c = strcmp (aname, bname);
4804 return (c != 0 ? c : strcmp (alabel, blabel));
4807 /* Free a list of written commons. */
4810 free_written_common (struct written_common *w)
4816 free_written_common (w->left);
4818 free_written_common (w->right);
4823 /* Write a common block to the module -- recursive helper function. */
4826 write_common_0 (gfc_symtree *st, bool this_module)
4832 struct written_common *w;
4833 bool write_me = true;
4838 write_common_0 (st->left, this_module);
4840 /* We will write out the binding label, or the name if no label given. */
4841 name = st->n.common->name;
4843 label = p->is_bind_c ? p->binding_label : p->name;
4845 /* Check if we've already output this common. */
4846 w = written_commons;
4849 int c = strcmp (name, w->name);
4850 c = (c != 0 ? c : strcmp (label, w->label));
4854 w = (c < 0) ? w->left : w->right;
4857 if (this_module && p->use_assoc)
4862 /* Write the common to the module. */
4864 mio_pool_string (&name);
4866 mio_symbol_ref (&p->head);
4867 flags = p->saved ? 1 : 0;
4868 if (p->threadprivate)
4870 mio_integer (&flags);
4872 /* Write out whether the common block is bind(c) or not. */
4873 mio_integer (&(p->is_bind_c));
4875 mio_pool_string (&label);
4878 /* Record that we have written this common. */
4879 w = XCNEW (struct written_common);
4882 gfc_insert_bbt (&written_commons, w, compare_written_commons);
4885 write_common_0 (st->right, this_module);
4889 /* Write a common, by initializing the list of written commons, calling
4890 the recursive function write_common_0() and cleaning up afterwards. */
4893 write_common (gfc_symtree *st)
4895 written_commons = NULL;
4896 write_common_0 (st, true);
4897 write_common_0 (st, false);
4898 free_written_common (written_commons);
4899 written_commons = NULL;
4903 /* Write the blank common block to the module. */
4906 write_blank_common (void)
4908 const char * name = BLANK_COMMON_NAME;
4910 /* TODO: Blank commons are not bind(c). The F2003 standard probably says
4911 this, but it hasn't been checked. Just making it so for now. */
4914 if (gfc_current_ns->blank_common.head == NULL)
4919 mio_pool_string (&name);
4921 mio_symbol_ref (&gfc_current_ns->blank_common.head);
4922 saved = gfc_current_ns->blank_common.saved;
4923 mio_integer (&saved);
4925 /* Write out whether the common block is bind(c) or not. */
4926 mio_integer (&is_bind_c);
4928 /* Write out the binding label, which is BLANK_COMMON_NAME, though
4929 it doesn't matter because the label isn't used. */
4930 mio_pool_string (&name);
4936 /* Write equivalences to the module. */
4945 for (eq = gfc_current_ns->equiv; eq; eq = eq->next)
4949 for (e = eq; e; e = e->eq)
4951 if (e->module == NULL)
4952 e->module = gfc_get_string ("%s.eq.%d", module_name, num);
4953 mio_allocated_string (e->module);
4954 mio_expr (&e->expr);
4963 /* Write derived type extensions to the module. */
4966 write_dt_extensions (gfc_symtree *st)
4968 if (!gfc_check_symbol_access (st->n.sym))
4970 if (!(st->n.sym->ns && st->n.sym->ns->proc_name
4971 && st->n.sym->ns->proc_name->attr.flavor == FL_MODULE))
4975 mio_pool_string (&st->name);
4976 if (st->n.sym->module != NULL)
4977 mio_pool_string (&st->n.sym->module);
4979 mio_internal_string (module_name);
4984 write_derived_extensions (gfc_symtree *st)
4986 if (!((st->n.sym->attr.flavor == FL_DERIVED)
4987 && (st->n.sym->f2k_derived != NULL)
4988 && (st->n.sym->f2k_derived->sym_root != NULL)))
4992 mio_symbol_ref (&(st->n.sym));
4993 gfc_traverse_symtree (st->n.sym->f2k_derived->sym_root,
4994 write_dt_extensions);
4999 /* Write a symbol to the module. */
5002 write_symbol (int n, gfc_symbol *sym)
5006 if (sym->attr.flavor == FL_UNKNOWN || sym->attr.flavor == FL_LABEL)
5007 gfc_internal_error ("write_symbol(): bad module symbol '%s'", sym->name);
5011 if (sym->attr.flavor == FL_DERIVED)
5014 name = dt_upper_string (sym->name);
5015 mio_pool_string (&name);
5018 mio_pool_string (&sym->name);
5020 mio_pool_string (&sym->module);
5021 if (sym->attr.is_bind_c || sym->attr.is_iso_c)
5023 label = sym->binding_label;
5024 mio_pool_string (&label);
5027 mio_pool_string (&sym->name);
5029 mio_pointer_ref (&sym->ns);
5036 /* Recursive traversal function to write the initial set of symbols to
5037 the module. We check to see if the symbol should be written
5038 according to the access specification. */
5041 write_symbol0 (gfc_symtree *st)
5045 bool dont_write = false;
5050 write_symbol0 (st->left);
5053 if (sym->module == NULL)
5054 sym->module = gfc_get_string (module_name);
5056 if (sym->attr.flavor == FL_PROCEDURE && sym->attr.generic
5057 && !sym->attr.subroutine && !sym->attr.function)
5060 if (!gfc_check_symbol_access (sym))
5065 p = get_pointer (sym);
5066 if (p->type == P_UNKNOWN)
5069 if (p->u.wsym.state != WRITTEN)
5071 write_symbol (p->integer, sym);
5072 p->u.wsym.state = WRITTEN;
5076 write_symbol0 (st->right);
5080 /* Recursive traversal function to write the secondary set of symbols
5081 to the module file. These are symbols that were not public yet are
5082 needed by the public symbols or another dependent symbol. The act
5083 of writing a symbol can modify the pointer_info tree, so we cease
5084 traversal if we find a symbol to write. We return nonzero if a
5085 symbol was written and pass that information upwards. */
5088 write_symbol1 (pointer_info *p)
5095 result = write_symbol1 (p->left);
5097 if (!(p->type != P_SYMBOL || p->u.wsym.state != NEEDS_WRITE))
5099 p->u.wsym.state = WRITTEN;
5100 write_symbol (p->integer, p->u.wsym.sym);
5104 result |= write_symbol1 (p->right);
5109 /* Write operator interfaces associated with a symbol. */
5112 write_operator (gfc_user_op *uop)
5114 static char nullstring[] = "";
5115 const char *p = nullstring;
5117 if (uop->op == NULL || !check_access (uop->access, uop->ns->default_access))
5120 mio_symbol_interface (&uop->name, &p, &uop->op);
5124 /* Write generic interfaces from the namespace sym_root. */
5127 write_generic (gfc_symtree *st)
5134 write_generic (st->left);
5135 write_generic (st->right);
5138 if (!sym || check_unique_name (st->name))
5141 if (sym->generic == NULL || !gfc_check_symbol_access (sym))
5144 if (sym->module == NULL)
5145 sym->module = gfc_get_string (module_name);
5147 mio_symbol_interface (&st->name, &sym->module, &sym->generic);
5152 write_symtree (gfc_symtree *st)
5159 /* A symbol in an interface body must not be visible in the
5161 if (sym->ns != gfc_current_ns
5162 && sym->ns->proc_name
5163 && sym->ns->proc_name->attr.if_source == IFSRC_IFBODY)
5166 if (!gfc_check_symbol_access (sym)
5167 || (sym->attr.flavor == FL_PROCEDURE && sym->attr.generic
5168 && !sym->attr.subroutine && !sym->attr.function))
5171 if (check_unique_name (st->name))
5174 p = find_pointer (sym);
5176 gfc_internal_error ("write_symtree(): Symbol not written");
5178 mio_pool_string (&st->name);
5179 mio_integer (&st->ambiguous);
5180 mio_integer (&p->integer);
5189 /* Write the operator interfaces. */
5192 for (i = GFC_INTRINSIC_BEGIN; i != GFC_INTRINSIC_END; i++)
5194 if (i == INTRINSIC_USER)
5197 mio_interface (check_access (gfc_current_ns->operator_access[i],
5198 gfc_current_ns->default_access)
5199 ? &gfc_current_ns->op[i] : NULL);
5207 gfc_traverse_user_op (gfc_current_ns, write_operator);
5213 write_generic (gfc_current_ns->sym_root);
5219 write_blank_common ();
5220 write_common (gfc_current_ns->common_root);
5232 gfc_traverse_symtree (gfc_current_ns->sym_root,
5233 write_derived_extensions);
5238 /* Write symbol information. First we traverse all symbols in the
5239 primary namespace, writing those that need to be written.
5240 Sometimes writing one symbol will cause another to need to be
5241 written. A list of these symbols ends up on the write stack, and
5242 we end by popping the bottom of the stack and writing the symbol
5243 until the stack is empty. */
5247 write_symbol0 (gfc_current_ns->sym_root);
5248 while (write_symbol1 (pi_root))
5257 gfc_traverse_symtree (gfc_current_ns->sym_root, write_symtree);
5262 /* Read a MD5 sum from the header of a module file. If the file cannot
5263 be opened, or we have any other error, we return -1. */
5266 read_md5_from_module_file (const char * filename, unsigned char md5[16])
5272 /* Open the file. */
5273 if ((file = fopen (filename, "r")) == NULL)
5276 /* Read the first line. */
5277 if (fgets (buf, sizeof (buf) - 1, file) == NULL)
5283 /* The file also needs to be overwritten if the version number changed. */
5284 n = strlen ("GFORTRAN module version '" MOD_VERSION "' created");
5285 if (strncmp (buf, "GFORTRAN module version '" MOD_VERSION "' created", n) != 0)
5291 /* Read a second line. */
5292 if (fgets (buf, sizeof (buf) - 1, file) == NULL)
5298 /* Close the file. */
5301 /* If the header is not what we expect, or is too short, bail out. */
5302 if (strncmp (buf, "MD5:", 4) != 0 || strlen (buf) < 4 + 16)
5305 /* Now, we have a real MD5, read it into the array. */
5306 for (n = 0; n < 16; n++)
5310 if (sscanf (&(buf[4+2*n]), "%02x", &x) != 1)
5320 /* Given module, dump it to disk. If there was an error while
5321 processing the module, dump_flag will be set to zero and we delete
5322 the module file, even if it was already there. */
5325 gfc_dump_module (const char *name, int dump_flag)
5328 char *filename, *filename_tmp;
5330 unsigned char md5_new[16], md5_old[16];
5332 n = strlen (name) + strlen (MODULE_EXTENSION) + 1;
5333 if (gfc_option.module_dir != NULL)
5335 n += strlen (gfc_option.module_dir);
5336 filename = (char *) alloca (n);
5337 strcpy (filename, gfc_option.module_dir);
5338 strcat (filename, name);
5342 filename = (char *) alloca (n);
5343 strcpy (filename, name);
5345 strcat (filename, MODULE_EXTENSION);
5347 /* Name of the temporary file used to write the module. */
5348 filename_tmp = (char *) alloca (n + 1);
5349 strcpy (filename_tmp, filename);
5350 strcat (filename_tmp, "0");
5352 /* There was an error while processing the module. We delete the
5353 module file, even if it was already there. */
5360 if (gfc_cpp_makedep ())
5361 gfc_cpp_add_target (filename);
5363 /* Write the module to the temporary file. */
5364 module_fp = fopen (filename_tmp, "w");
5365 if (module_fp == NULL)
5366 gfc_fatal_error ("Can't open module file '%s' for writing at %C: %s",
5367 filename_tmp, xstrerror (errno));
5369 /* Write the header, including space reserved for the MD5 sum. */
5370 fprintf (module_fp, "GFORTRAN module version '%s' created from %s\n"
5371 "MD5:", MOD_VERSION, gfc_source_file);
5372 fgetpos (module_fp, &md5_pos);
5373 fputs ("00000000000000000000000000000000 -- "
5374 "If you edit this, you'll get what you deserve.\n\n", module_fp);
5376 /* Initialize the MD5 context that will be used for output. */
5377 md5_init_ctx (&ctx);
5379 /* Write the module itself. */
5381 strcpy (module_name, name);
5387 free_pi_tree (pi_root);
5392 /* Write the MD5 sum to the header of the module file. */
5393 md5_finish_ctx (&ctx, md5_new);
5394 fsetpos (module_fp, &md5_pos);
5395 for (n = 0; n < 16; n++)
5396 fprintf (module_fp, "%02x", md5_new[n]);
5398 if (fclose (module_fp))
5399 gfc_fatal_error ("Error writing module file '%s' for writing: %s",
5400 filename_tmp, xstrerror (errno));
5402 /* Read the MD5 from the header of the old module file and compare. */
5403 if (read_md5_from_module_file (filename, md5_old) != 0
5404 || memcmp (md5_old, md5_new, sizeof (md5_old)) != 0)
5406 /* Module file have changed, replace the old one. */
5407 if (unlink (filename) && errno != ENOENT)
5408 gfc_fatal_error ("Can't delete module file '%s': %s", filename,
5410 if (rename (filename_tmp, filename))
5411 gfc_fatal_error ("Can't rename module file '%s' to '%s': %s",
5412 filename_tmp, filename, xstrerror (errno));
5416 if (unlink (filename_tmp))
5417 gfc_fatal_error ("Can't delete temporary module file '%s': %s",
5418 filename_tmp, xstrerror (errno));
5424 create_intrinsic_function (const char *name, gfc_isym_id id,
5425 const char *modname, intmod_id module)
5427 gfc_intrinsic_sym *isym;
5428 gfc_symtree *tmp_symtree;
5431 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5434 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5436 gfc_error ("Symbol '%s' already declared", name);
5439 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5440 sym = tmp_symtree->n.sym;
5442 isym = gfc_intrinsic_function_by_id (id);
5445 sym->attr.flavor = FL_PROCEDURE;
5446 sym->attr.intrinsic = 1;
5448 sym->module = gfc_get_string (modname);
5449 sym->attr.use_assoc = 1;
5450 sym->from_intmod = module;
5451 sym->intmod_sym_id = id;
5455 /* Import the intrinsic ISO_C_BINDING module, generating symbols in
5456 the current namespace for all named constants, pointer types, and
5457 procedures in the module unless the only clause was used or a rename
5458 list was provided. */
5461 import_iso_c_binding_module (void)
5463 gfc_symbol *mod_sym = NULL;
5464 gfc_symtree *mod_symtree = NULL;
5465 const char *iso_c_module_name = "__iso_c_binding";
5469 /* Look only in the current namespace. */
5470 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, iso_c_module_name);
5472 if (mod_symtree == NULL)
5474 /* symtree doesn't already exist in current namespace. */
5475 gfc_get_sym_tree (iso_c_module_name, gfc_current_ns, &mod_symtree,
5478 if (mod_symtree != NULL)
5479 mod_sym = mod_symtree->n.sym;
5481 gfc_internal_error ("import_iso_c_binding_module(): Unable to "
5482 "create symbol for %s", iso_c_module_name);
5484 mod_sym->attr.flavor = FL_MODULE;
5485 mod_sym->attr.intrinsic = 1;
5486 mod_sym->module = gfc_get_string (iso_c_module_name);
5487 mod_sym->from_intmod = INTMOD_ISO_C_BINDING;
5490 /* Generate the symbols for the named constants representing
5491 the kinds for intrinsic data types. */
5492 for (i = 0; i < ISOCBINDING_NUMBER; i++)
5495 for (u = gfc_rename_list; u; u = u->next)
5496 if (strcmp (c_interop_kinds_table[i].name, u->use_name) == 0)
5505 #define NAMED_FUNCTION(a,b,c,d) \
5507 not_in_std = (gfc_option.allow_std & d) == 0; \
5510 #include "iso-c-binding.def"
5511 #undef NAMED_FUNCTION
5512 #define NAMED_INTCST(a,b,c,d) \
5514 not_in_std = (gfc_option.allow_std & d) == 0; \
5517 #include "iso-c-binding.def"
5519 #define NAMED_REALCST(a,b,c,d) \
5521 not_in_std = (gfc_option.allow_std & d) == 0; \
5524 #include "iso-c-binding.def"
5525 #undef NAMED_REALCST
5526 #define NAMED_CMPXCST(a,b,c,d) \
5528 not_in_std = (gfc_option.allow_std & d) == 0; \
5531 #include "iso-c-binding.def"
5532 #undef NAMED_CMPXCST
5540 gfc_error ("The symbol '%s', referenced at %C, is not "
5541 "in the selected standard", name);
5547 #define NAMED_FUNCTION(a,b,c,d) \
5549 create_intrinsic_function (u->local_name[0] ? u->local_name \
5552 iso_c_module_name, \
5553 INTMOD_ISO_C_BINDING); \
5555 #include "iso-c-binding.def"
5556 #undef NAMED_FUNCTION
5559 generate_isocbinding_symbol (iso_c_module_name,
5560 (iso_c_binding_symbol) i,
5561 u->local_name[0] ? u->local_name
5566 if (!found && !only_flag)
5568 /* Skip, if the symbol is not in the enabled standard. */
5571 #define NAMED_FUNCTION(a,b,c,d) \
5573 if ((gfc_option.allow_std & d) == 0) \
5576 #include "iso-c-binding.def"
5577 #undef NAMED_FUNCTION
5579 #define NAMED_INTCST(a,b,c,d) \
5581 if ((gfc_option.allow_std & d) == 0) \
5584 #include "iso-c-binding.def"
5586 #define NAMED_REALCST(a,b,c,d) \
5588 if ((gfc_option.allow_std & d) == 0) \
5591 #include "iso-c-binding.def"
5592 #undef NAMED_REALCST
5593 #define NAMED_CMPXCST(a,b,c,d) \
5595 if ((gfc_option.allow_std & d) == 0) \
5598 #include "iso-c-binding.def"
5599 #undef NAMED_CMPXCST
5601 ; /* Not GFC_STD_* versioned. */
5606 #define NAMED_FUNCTION(a,b,c,d) \
5608 create_intrinsic_function (b, (gfc_isym_id) c, \
5609 iso_c_module_name, \
5610 INTMOD_ISO_C_BINDING); \
5612 #include "iso-c-binding.def"
5613 #undef NAMED_FUNCTION
5616 generate_isocbinding_symbol (iso_c_module_name,
5617 (iso_c_binding_symbol) i, NULL);
5622 for (u = gfc_rename_list; u; u = u->next)
5627 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
5628 "module ISO_C_BINDING", u->use_name, &u->where);
5633 /* Add an integer named constant from a given module. */
5636 create_int_parameter (const char *name, int value, const char *modname,
5637 intmod_id module, int id)
5639 gfc_symtree *tmp_symtree;
5642 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5643 if (tmp_symtree != NULL)
5645 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5648 gfc_error ("Symbol '%s' already declared", name);
5651 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5652 sym = tmp_symtree->n.sym;
5654 sym->module = gfc_get_string (modname);
5655 sym->attr.flavor = FL_PARAMETER;
5656 sym->ts.type = BT_INTEGER;
5657 sym->ts.kind = gfc_default_integer_kind;
5658 sym->value = gfc_get_int_expr (gfc_default_integer_kind, NULL, value);
5659 sym->attr.use_assoc = 1;
5660 sym->from_intmod = module;
5661 sym->intmod_sym_id = id;
5665 /* Value is already contained by the array constructor, but not
5669 create_int_parameter_array (const char *name, int size, gfc_expr *value,
5670 const char *modname, intmod_id module, int id)
5672 gfc_symtree *tmp_symtree;
5675 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5676 if (tmp_symtree != NULL)
5678 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5681 gfc_error ("Symbol '%s' already declared", name);
5684 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5685 sym = tmp_symtree->n.sym;
5687 sym->module = gfc_get_string (modname);
5688 sym->attr.flavor = FL_PARAMETER;
5689 sym->ts.type = BT_INTEGER;
5690 sym->ts.kind = gfc_default_integer_kind;
5691 sym->attr.use_assoc = 1;
5692 sym->from_intmod = module;
5693 sym->intmod_sym_id = id;
5694 sym->attr.dimension = 1;
5695 sym->as = gfc_get_array_spec ();
5697 sym->as->type = AS_EXPLICIT;
5698 sym->as->lower[0] = gfc_get_int_expr (gfc_default_integer_kind, NULL, 1);
5699 sym->as->upper[0] = gfc_get_int_expr (gfc_default_integer_kind, NULL, size);
5702 sym->value->shape = gfc_get_shape (1);
5703 mpz_init_set_ui (sym->value->shape[0], size);
5707 /* Add an derived type for a given module. */
5710 create_derived_type (const char *name, const char *modname,
5711 intmod_id module, int id)
5713 gfc_symtree *tmp_symtree;
5714 gfc_symbol *sym, *dt_sym;
5715 gfc_interface *intr, *head;
5717 tmp_symtree = gfc_find_symtree (gfc_current_ns->sym_root, name);
5718 if (tmp_symtree != NULL)
5720 if (strcmp (modname, tmp_symtree->n.sym->module) == 0)
5723 gfc_error ("Symbol '%s' already declared", name);
5726 gfc_get_sym_tree (name, gfc_current_ns, &tmp_symtree, false);
5727 sym = tmp_symtree->n.sym;
5728 sym->module = gfc_get_string (modname);
5729 sym->from_intmod = module;
5730 sym->intmod_sym_id = id;
5731 sym->attr.flavor = FL_PROCEDURE;
5732 sym->attr.function = 1;
5733 sym->attr.generic = 1;
5735 gfc_get_sym_tree (dt_upper_string (sym->name),
5736 gfc_current_ns, &tmp_symtree, false);
5737 dt_sym = tmp_symtree->n.sym;
5738 dt_sym->name = gfc_get_string (sym->name);
5739 dt_sym->attr.flavor = FL_DERIVED;
5740 dt_sym->attr.private_comp = 1;
5741 dt_sym->attr.zero_comp = 1;
5742 dt_sym->attr.use_assoc = 1;
5743 dt_sym->module = gfc_get_string (modname);
5744 dt_sym->from_intmod = module;
5745 dt_sym->intmod_sym_id = id;
5747 head = sym->generic;
5748 intr = gfc_get_interface ();
5750 intr->where = gfc_current_locus;
5752 sym->generic = intr;
5753 sym->attr.if_source = IFSRC_DECL;
5757 /* USE the ISO_FORTRAN_ENV intrinsic module. */
5760 use_iso_fortran_env_module (void)
5762 static char mod[] = "iso_fortran_env";
5764 gfc_symbol *mod_sym;
5765 gfc_symtree *mod_symtree;
5769 intmod_sym symbol[] = {
5770 #define NAMED_INTCST(a,b,c,d) { a, b, 0, d },
5771 #include "iso-fortran-env.def"
5773 #define NAMED_KINDARRAY(a,b,c,d) { a, b, 0, d },
5774 #include "iso-fortran-env.def"
5775 #undef NAMED_KINDARRAY
5776 #define NAMED_DERIVED_TYPE(a,b,c,d) { a, b, 0, d },
5777 #include "iso-fortran-env.def"
5778 #undef NAMED_DERIVED_TYPE
5779 #define NAMED_FUNCTION(a,b,c,d) { a, b, c, d },
5780 #include "iso-fortran-env.def"
5781 #undef NAMED_FUNCTION
5782 { ISOFORTRANENV_INVALID, NULL, -1234, 0 } };
5785 #define NAMED_INTCST(a,b,c,d) symbol[i++].value = c;
5786 #include "iso-fortran-env.def"
5789 /* Generate the symbol for the module itself. */
5790 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, mod);
5791 if (mod_symtree == NULL)
5793 gfc_get_sym_tree (mod, gfc_current_ns, &mod_symtree, false);
5794 gcc_assert (mod_symtree);
5795 mod_sym = mod_symtree->n.sym;
5797 mod_sym->attr.flavor = FL_MODULE;
5798 mod_sym->attr.intrinsic = 1;
5799 mod_sym->module = gfc_get_string (mod);
5800 mod_sym->from_intmod = INTMOD_ISO_FORTRAN_ENV;
5803 if (!mod_symtree->n.sym->attr.intrinsic)
5804 gfc_error ("Use of intrinsic module '%s' at %C conflicts with "
5805 "non-intrinsic module name used previously", mod);
5807 /* Generate the symbols for the module integer named constants. */
5809 for (i = 0; symbol[i].name; i++)
5812 for (u = gfc_rename_list; u; u = u->next)
5814 if (strcmp (symbol[i].name, u->use_name) == 0)
5819 if (gfc_notify_std (symbol[i].standard, "The symbol '%s', "
5820 "referenced at %C, is not in the selected "
5821 "standard", symbol[i].name) == FAILURE)
5824 if ((gfc_option.flag_default_integer || gfc_option.flag_default_real)
5825 && symbol[i].id == ISOFORTRANENV_NUMERIC_STORAGE_SIZE)
5826 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named "
5827 "constant from intrinsic module "
5828 "ISO_FORTRAN_ENV at %C is incompatible with "
5830 gfc_option.flag_default_integer
5831 ? "-fdefault-integer-8"
5832 : "-fdefault-real-8");
5833 switch (symbol[i].id)
5835 #define NAMED_INTCST(a,b,c,d) \
5837 #include "iso-fortran-env.def"
5839 create_int_parameter (u->local_name[0] ? u->local_name
5841 symbol[i].value, mod,
5842 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);
5845 #define NAMED_KINDARRAY(a,b,KINDS,d) \
5847 expr = gfc_get_array_expr (BT_INTEGER, \
5848 gfc_default_integer_kind,\
5850 for (j = 0; KINDS[j].kind != 0; j++) \
5851 gfc_constructor_append_expr (&expr->value.constructor, \
5852 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
5853 KINDS[j].kind), NULL); \
5854 create_int_parameter_array (u->local_name[0] ? u->local_name \
5857 INTMOD_ISO_FORTRAN_ENV, \
5860 #include "iso-fortran-env.def"
5861 #undef NAMED_KINDARRAY
5863 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
5865 #include "iso-fortran-env.def"
5866 create_derived_type (u->local_name[0] ? u->local_name
5868 mod, INTMOD_ISO_FORTRAN_ENV,
5871 #undef NAMED_DERIVED_TYPE
5873 #define NAMED_FUNCTION(a,b,c,d) \
5875 #include "iso-fortran-env.def"
5876 #undef NAMED_FUNCTION
5877 create_intrinsic_function (u->local_name[0] ? u->local_name
5879 (gfc_isym_id) symbol[i].value, mod,
5880 INTMOD_ISO_FORTRAN_ENV);
5889 if (!found && !only_flag)
5891 if ((gfc_option.allow_std & symbol[i].standard) == 0)
5894 if ((gfc_option.flag_default_integer || gfc_option.flag_default_real)
5895 && symbol[i].id == ISOFORTRANENV_NUMERIC_STORAGE_SIZE)
5896 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named constant "
5897 "from intrinsic module ISO_FORTRAN_ENV at %C is "
5898 "incompatible with option %s",
5899 gfc_option.flag_default_integer
5900 ? "-fdefault-integer-8" : "-fdefault-real-8");
5902 switch (symbol[i].id)
5904 #define NAMED_INTCST(a,b,c,d) \
5906 #include "iso-fortran-env.def"
5908 create_int_parameter (symbol[i].name, symbol[i].value, mod,
5909 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);
5912 #define NAMED_KINDARRAY(a,b,KINDS,d) \
5914 expr = gfc_get_array_expr (BT_INTEGER, gfc_default_integer_kind, \
5916 for (j = 0; KINDS[j].kind != 0; j++) \
5917 gfc_constructor_append_expr (&expr->value.constructor, \
5918 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
5919 KINDS[j].kind), NULL); \
5920 create_int_parameter_array (symbol[i].name, j, expr, mod, \
5921 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);\
5923 #include "iso-fortran-env.def"
5924 #undef NAMED_KINDARRAY
5926 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
5928 #include "iso-fortran-env.def"
5929 create_derived_type (symbol[i].name, mod, INTMOD_ISO_FORTRAN_ENV,
5932 #undef NAMED_DERIVED_TYPE
5934 #define NAMED_FUNCTION(a,b,c,d) \
5936 #include "iso-fortran-env.def"
5937 #undef NAMED_FUNCTION
5938 create_intrinsic_function (symbol[i].name,
5939 (gfc_isym_id) symbol[i].value, mod,
5940 INTMOD_ISO_FORTRAN_ENV);
5949 for (u = gfc_rename_list; u; u = u->next)
5954 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
5955 "module ISO_FORTRAN_ENV", u->use_name, &u->where);
5960 /* Process a USE directive. */
5963 gfc_use_module (void)
5968 gfc_symtree *mod_symtree;
5969 gfc_use_list *use_stmt;
5970 locus old_locus = gfc_current_locus;
5972 gfc_current_locus = use_locus;
5974 filename = (char *) alloca (strlen (module_name) + strlen (MODULE_EXTENSION)
5976 strcpy (filename, module_name);
5977 strcat (filename, MODULE_EXTENSION);
5979 /* First, try to find an non-intrinsic module, unless the USE statement
5980 specified that the module is intrinsic. */
5983 module_fp = gfc_open_included_file (filename, true, true);
5985 /* Then, see if it's an intrinsic one, unless the USE statement
5986 specified that the module is non-intrinsic. */
5987 if (module_fp == NULL && !specified_nonint)
5989 if (strcmp (module_name, "iso_fortran_env") == 0
5990 && gfc_notify_std (GFC_STD_F2003, "Fortran 2003: ISO_FORTRAN_ENV "
5991 "intrinsic module at %C") != FAILURE)
5993 use_iso_fortran_env_module ();
5994 gfc_current_locus = old_locus;
5998 if (strcmp (module_name, "iso_c_binding") == 0
5999 && gfc_notify_std (GFC_STD_F2003, "Fortran 2003: "
6000 "ISO_C_BINDING module at %C") != FAILURE)
6002 import_iso_c_binding_module();
6003 gfc_current_locus = old_locus;
6007 module_fp = gfc_open_intrinsic_module (filename);
6009 if (module_fp == NULL && specified_int)
6010 gfc_fatal_error ("Can't find an intrinsic module named '%s' at %C",
6014 if (module_fp == NULL)
6015 gfc_fatal_error ("Can't open module file '%s' for reading at %C: %s",
6016 filename, xstrerror (errno));
6018 /* Check that we haven't already USEd an intrinsic module with the
6021 mod_symtree = gfc_find_symtree (gfc_current_ns->sym_root, module_name);
6022 if (mod_symtree && mod_symtree->n.sym->attr.intrinsic)
6023 gfc_error ("Use of non-intrinsic module '%s' at %C conflicts with "
6024 "intrinsic module name used previously", module_name);
6031 /* Skip the first two lines of the module, after checking that this is
6032 a gfortran module file. */
6038 bad_module ("Unexpected end of module");
6041 if ((start == 1 && strcmp (atom_name, "GFORTRAN") != 0)
6042 || (start == 2 && strcmp (atom_name, " module") != 0))
6043 gfc_fatal_error ("File '%s' opened at %C is not a GFORTRAN module "
6047 if (strcmp (atom_name, " version") != 0
6048 || module_char () != ' '
6049 || parse_atom () != ATOM_STRING)
6050 gfc_fatal_error ("Parse error when checking module version"
6051 " for file '%s' opened at %C", filename);
6053 if (strcmp (atom_string, MOD_VERSION))
6055 gfc_fatal_error ("Wrong module version '%s' (expected '%s') "
6056 "for file '%s' opened at %C", atom_string,
6057 MOD_VERSION, filename);
6067 /* Make sure we're not reading the same module that we may be building. */
6068 for (p = gfc_state_stack; p; p = p->previous)
6069 if (p->state == COMP_MODULE && strcmp (p->sym->name, module_name) == 0)
6070 gfc_fatal_error ("Can't USE the same module we're building!");
6073 init_true_name_tree ();
6077 free_true_name (true_name_root);
6078 true_name_root = NULL;
6080 free_pi_tree (pi_root);
6085 use_stmt = gfc_get_use_list ();
6086 use_stmt->module_name = gfc_get_string (module_name);
6087 use_stmt->only_flag = only_flag;
6088 use_stmt->rename = gfc_rename_list;
6089 use_stmt->where = use_locus;
6090 gfc_rename_list = NULL;
6091 use_stmt->next = gfc_current_ns->use_stmts;
6092 gfc_current_ns->use_stmts = use_stmt;
6094 gfc_current_locus = old_locus;
6099 gfc_free_use_stmts (gfc_use_list *use_stmts)
6102 for (; use_stmts; use_stmts = next)
6104 gfc_use_rename *next_rename;
6106 for (; use_stmts->rename; use_stmts->rename = next_rename)
6108 next_rename = use_stmts->rename->next;
6109 free (use_stmts->rename);
6111 next = use_stmts->next;
6118 gfc_module_init_2 (void)
6120 last_atom = ATOM_LPAREN;
6125 gfc_module_done_2 (void)