1 /* Handle modules, which amounts to loading and saving symbols and
2 their attendant structures.
3 Copyright (C) 2000-2013 Free Software Foundation, Inc.
4 Contributed by Andy Vaught
6 This file is part of GCC.
8 GCC is free software; you can redistribute it and/or modify it under
9 the terms of the GNU General Public License as published by the Free
10 Software Foundation; either version 3, or (at your option) any later
13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
18 You should have received a copy of the GNU General Public License
19 along with GCC; see the file COPYING3. If not see
20 <http://www.gnu.org/licenses/>. */
22 /* The syntax of gfortran modules resembles that of lisp lists, i.e. a
23 sequence of atoms, which can be left or right parenthesis, names,
24 integers or strings. Parenthesis are always matched which allows
25 us to skip over sections at high speed without having to know
26 anything about the internal structure of the lists. A "name" is
27 usually a fortran 95 identifier, but can also start with '@' in
28 order to reference a hidden symbol.
30 The first line of a module is an informational message about what
31 created the module, the file it came from and when it was created.
32 The second line is a warning for people not to edit the module.
33 The rest of the module looks like:
35 ( ( <Interface info for UPLUS> )
36 ( <Interface info for UMINUS> )
39 ( ( <name of operator interface> <module of op interface> <i/f1> ... )
42 ( ( <name of generic interface> <module of generic interface> <i/f1> ... )
45 ( ( <common name> <symbol> <saved flag>)
51 ( <Symbol Number (in no particular order)>
53 <Module name of symbol>
54 ( <symbol information> )
63 In general, symbols refer to other symbols by their symbol number,
64 which are zero based. Symbols are written to the module in no
69 #include "coretypes.h"
73 #include "parse.h" /* FIXME */
74 #include "constructor.h"
77 #include "stringpool.h"
81 #define MODULE_EXTENSION ".mod"
83 /* Don't put any single quote (') in MOD_VERSION, if you want it to be
85 #define MOD_VERSION "11"
88 /* Structure that describes a position within a module file. */
97 /* Structure for list of symbols of intrinsic modules. */
110 P_UNKNOWN
= 0, P_OTHER
, P_NAMESPACE
, P_COMPONENT
, P_SYMBOL
114 /* The fixup structure lists pointers to pointers that have to
115 be updated when a pointer value becomes known. */
117 typedef struct fixup_t
120 struct fixup_t
*next
;
125 /* Structure for holding extra info needed for pointers being read. */
141 typedef struct pointer_info
143 BBT_HEADER (pointer_info
);
147 /* The first component of each member of the union is the pointer
154 void *pointer
; /* Member for doing pointer searches. */
159 char *true_name
, *module
, *binding_label
;
161 gfc_symtree
*symtree
;
162 enum gfc_rsym_state state
;
163 int ns
, referenced
, renamed
;
171 enum gfc_wsym_state state
;
180 #define gfc_get_pointer_info() XCNEW (pointer_info)
183 /* Local variables */
185 /* The gzFile for the module we're reading or writing. */
186 static gzFile module_fp
;
189 /* The name of the module we're reading (USE'ing) or writing. */
190 static const char *module_name
;
191 static gfc_use_list
*module_list
;
193 /* Content of module. */
194 static char* module_content
;
196 static long module_pos
;
197 static int module_line
, module_column
, only_flag
;
198 static int prev_module_line
, prev_module_column
;
201 { IO_INPUT
, IO_OUTPUT
}
204 static gfc_use_rename
*gfc_rename_list
;
205 static pointer_info
*pi_root
;
206 static int symbol_number
; /* Counter for assigning symbol numbers */
208 /* Tells mio_expr_ref to make symbols for unused equivalence members. */
209 static bool in_load_equiv
;
213 /*****************************************************************/
215 /* Pointer/integer conversion. Pointers between structures are stored
216 as integers in the module file. The next couple of subroutines
217 handle this translation for reading and writing. */
219 /* Recursively free the tree of pointer structures. */
222 free_pi_tree (pointer_info
*p
)
227 if (p
->fixup
!= NULL
)
228 gfc_internal_error ("free_pi_tree(): Unresolved fixup");
230 free_pi_tree (p
->left
);
231 free_pi_tree (p
->right
);
233 if (iomode
== IO_INPUT
)
235 XDELETEVEC (p
->u
.rsym
.true_name
);
236 XDELETEVEC (p
->u
.rsym
.module
);
237 XDELETEVEC (p
->u
.rsym
.binding_label
);
244 /* Compare pointers when searching by pointer. Used when writing a
248 compare_pointers (void *_sn1
, void *_sn2
)
250 pointer_info
*sn1
, *sn2
;
252 sn1
= (pointer_info
*) _sn1
;
253 sn2
= (pointer_info
*) _sn2
;
255 if (sn1
->u
.pointer
< sn2
->u
.pointer
)
257 if (sn1
->u
.pointer
> sn2
->u
.pointer
)
264 /* Compare integers when searching by integer. Used when reading a
268 compare_integers (void *_sn1
, void *_sn2
)
270 pointer_info
*sn1
, *sn2
;
272 sn1
= (pointer_info
*) _sn1
;
273 sn2
= (pointer_info
*) _sn2
;
275 if (sn1
->integer
< sn2
->integer
)
277 if (sn1
->integer
> sn2
->integer
)
284 /* Initialize the pointer_info tree. */
293 compare
= (iomode
== IO_INPUT
) ? compare_integers
: compare_pointers
;
295 /* Pointer 0 is the NULL pointer. */
296 p
= gfc_get_pointer_info ();
301 gfc_insert_bbt (&pi_root
, p
, compare
);
303 /* Pointer 1 is the current namespace. */
304 p
= gfc_get_pointer_info ();
305 p
->u
.pointer
= gfc_current_ns
;
307 p
->type
= P_NAMESPACE
;
309 gfc_insert_bbt (&pi_root
, p
, compare
);
315 /* During module writing, call here with a pointer to something,
316 returning the pointer_info node. */
318 static pointer_info
*
319 find_pointer (void *gp
)
326 if (p
->u
.pointer
== gp
)
328 p
= (gp
< p
->u
.pointer
) ? p
->left
: p
->right
;
335 /* Given a pointer while writing, returns the pointer_info tree node,
336 creating it if it doesn't exist. */
338 static pointer_info
*
339 get_pointer (void *gp
)
343 p
= find_pointer (gp
);
347 /* Pointer doesn't have an integer. Give it one. */
348 p
= gfc_get_pointer_info ();
351 p
->integer
= symbol_number
++;
353 gfc_insert_bbt (&pi_root
, p
, compare_pointers
);
359 /* Given an integer during reading, find it in the pointer_info tree,
360 creating the node if not found. */
362 static pointer_info
*
363 get_integer (int integer
)
373 c
= compare_integers (&t
, p
);
377 p
= (c
< 0) ? p
->left
: p
->right
;
383 p
= gfc_get_pointer_info ();
384 p
->integer
= integer
;
387 gfc_insert_bbt (&pi_root
, p
, compare_integers
);
393 /* Recursive function to find a pointer within a tree by brute force. */
395 static pointer_info
*
396 fp2 (pointer_info
*p
, const void *target
)
403 if (p
->u
.pointer
== target
)
406 q
= fp2 (p
->left
, target
);
410 return fp2 (p
->right
, target
);
414 /* During reading, find a pointer_info node from the pointer value.
415 This amounts to a brute-force search. */
417 static pointer_info
*
418 find_pointer2 (void *p
)
420 return fp2 (pi_root
, p
);
424 /* Resolve any fixups using a known pointer. */
427 resolve_fixups (fixup_t
*f
, void *gp
)
440 /* Convert a string such that it starts with a lower-case character. Used
441 to convert the symtree name of a derived-type to the symbol name or to
442 the name of the associated generic function. */
445 dt_lower_string (const char *name
)
447 if (name
[0] != (char) TOLOWER ((unsigned char) name
[0]))
448 return gfc_get_string ("%c%s", (char) TOLOWER ((unsigned char) name
[0]),
450 return gfc_get_string (name
);
454 /* Convert a string such that it starts with an upper-case character. Used to
455 return the symtree-name for a derived type; the symbol name itself and the
456 symtree/symbol name of the associated generic function start with a lower-
460 dt_upper_string (const char *name
)
462 if (name
[0] != (char) TOUPPER ((unsigned char) name
[0]))
463 return gfc_get_string ("%c%s", (char) TOUPPER ((unsigned char) name
[0]),
465 return gfc_get_string (name
);
468 /* Call here during module reading when we know what pointer to
469 associate with an integer. Any fixups that exist are resolved at
473 associate_integer_pointer (pointer_info
*p
, void *gp
)
475 if (p
->u
.pointer
!= NULL
)
476 gfc_internal_error ("associate_integer_pointer(): Already associated");
480 resolve_fixups (p
->fixup
, gp
);
486 /* During module reading, given an integer and a pointer to a pointer,
487 either store the pointer from an already-known value or create a
488 fixup structure in order to store things later. Returns zero if
489 the reference has been actually stored, or nonzero if the reference
490 must be fixed later (i.e., associate_integer_pointer must be called
491 sometime later. Returns the pointer_info structure. */
493 static pointer_info
*
494 add_fixup (int integer
, void *gp
)
500 p
= get_integer (integer
);
502 if (p
->integer
== 0 || p
->u
.pointer
!= NULL
)
505 *cp
= (char *) p
->u
.pointer
;
514 f
->pointer
= (void **) gp
;
521 /*****************************************************************/
523 /* Parser related subroutines */
525 /* Free the rename list left behind by a USE statement. */
528 free_rename (gfc_use_rename
*list
)
530 gfc_use_rename
*next
;
532 for (; list
; list
= next
)
540 /* Match a USE statement. */
545 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module_nature
[GFC_MAX_SYMBOL_LEN
+ 1];
546 gfc_use_rename
*tail
= NULL
, *new_use
;
547 interface_type type
, type2
;
550 gfc_use_list
*use_list
;
552 use_list
= gfc_get_use_list ();
554 if (gfc_match (" , ") == MATCH_YES
)
556 if ((m
= gfc_match (" %n ::", module_nature
)) == MATCH_YES
)
558 if (!gfc_notify_std (GFC_STD_F2003
, "module "
559 "nature in USE statement at %C"))
562 if (strcmp (module_nature
, "intrinsic") == 0)
563 use_list
->intrinsic
= true;
566 if (strcmp (module_nature
, "non_intrinsic") == 0)
567 use_list
->non_intrinsic
= true;
570 gfc_error ("Module nature in USE statement at %C shall "
571 "be either INTRINSIC or NON_INTRINSIC");
578 /* Help output a better error message than "Unclassifiable
580 gfc_match (" %n", module_nature
);
581 if (strcmp (module_nature
, "intrinsic") == 0
582 || strcmp (module_nature
, "non_intrinsic") == 0)
583 gfc_error ("\"::\" was expected after module nature at %C "
584 "but was not found");
591 m
= gfc_match (" ::");
592 if (m
== MATCH_YES
&&
593 !gfc_notify_std(GFC_STD_F2003
, "\"USE :: module\" at %C"))
598 m
= gfc_match ("% ");
607 use_list
->where
= gfc_current_locus
;
609 m
= gfc_match_name (name
);
616 use_list
->module_name
= gfc_get_string (name
);
618 if (gfc_match_eos () == MATCH_YES
)
621 if (gfc_match_char (',') != MATCH_YES
)
624 if (gfc_match (" only :") == MATCH_YES
)
625 use_list
->only_flag
= true;
627 if (gfc_match_eos () == MATCH_YES
)
632 /* Get a new rename struct and add it to the rename list. */
633 new_use
= gfc_get_use_rename ();
634 new_use
->where
= gfc_current_locus
;
637 if (use_list
->rename
== NULL
)
638 use_list
->rename
= new_use
;
640 tail
->next
= new_use
;
643 /* See what kind of interface we're dealing with. Assume it is
645 new_use
->op
= INTRINSIC_NONE
;
646 if (gfc_match_generic_spec (&type
, name
, &op
) == MATCH_ERROR
)
651 case INTERFACE_NAMELESS
:
652 gfc_error ("Missing generic specification in USE statement at %C");
655 case INTERFACE_USER_OP
:
656 case INTERFACE_GENERIC
:
657 m
= gfc_match (" =>");
659 if (type
== INTERFACE_USER_OP
&& m
== MATCH_YES
660 && (!gfc_notify_std(GFC_STD_F2003
, "Renaming "
661 "operators in USE statements at %C")))
664 if (type
== INTERFACE_USER_OP
)
665 new_use
->op
= INTRINSIC_USER
;
667 if (use_list
->only_flag
)
670 strcpy (new_use
->use_name
, name
);
673 strcpy (new_use
->local_name
, name
);
674 m
= gfc_match_generic_spec (&type2
, new_use
->use_name
, &op
);
679 if (m
== MATCH_ERROR
)
687 strcpy (new_use
->local_name
, name
);
689 m
= gfc_match_generic_spec (&type2
, new_use
->use_name
, &op
);
694 if (m
== MATCH_ERROR
)
698 if (strcmp (new_use
->use_name
, use_list
->module_name
) == 0
699 || strcmp (new_use
->local_name
, use_list
->module_name
) == 0)
701 gfc_error ("The name '%s' at %C has already been used as "
702 "an external module name.", use_list
->module_name
);
707 case INTERFACE_INTRINSIC_OP
:
715 if (gfc_match_eos () == MATCH_YES
)
717 if (gfc_match_char (',') != MATCH_YES
)
724 gfc_use_list
*last
= module_list
;
727 last
->next
= use_list
;
730 module_list
= use_list
;
735 gfc_syntax_error (ST_USE
);
738 free_rename (use_list
->rename
);
744 /* Given a name and a number, inst, return the inst name
745 under which to load this symbol. Returns NULL if this
746 symbol shouldn't be loaded. If inst is zero, returns
747 the number of instances of this name. If interface is
748 true, a user-defined operator is sought, otherwise only
749 non-operators are sought. */
752 find_use_name_n (const char *name
, int *inst
, bool interface
)
755 const char *low_name
= NULL
;
758 /* For derived types. */
759 if (name
[0] != (char) TOLOWER ((unsigned char) name
[0]))
760 low_name
= dt_lower_string (name
);
763 for (u
= gfc_rename_list
; u
; u
= u
->next
)
765 if ((!low_name
&& strcmp (u
->use_name
, name
) != 0)
766 || (low_name
&& strcmp (u
->use_name
, low_name
) != 0)
767 || (u
->op
== INTRINSIC_USER
&& !interface
)
768 || (u
->op
!= INTRINSIC_USER
&& interface
))
781 return only_flag
? NULL
: name
;
787 if (u
->local_name
[0] == '\0')
789 return dt_upper_string (u
->local_name
);
792 return (u
->local_name
[0] != '\0') ? u
->local_name
: name
;
796 /* Given a name, return the name under which to load this symbol.
797 Returns NULL if this symbol shouldn't be loaded. */
800 find_use_name (const char *name
, bool interface
)
803 return find_use_name_n (name
, &i
, interface
);
807 /* Given a real name, return the number of use names associated with it. */
810 number_use_names (const char *name
, bool interface
)
813 find_use_name_n (name
, &i
, interface
);
818 /* Try to find the operator in the current list. */
820 static gfc_use_rename
*
821 find_use_operator (gfc_intrinsic_op op
)
825 for (u
= gfc_rename_list
; u
; u
= u
->next
)
833 /*****************************************************************/
835 /* The next couple of subroutines maintain a tree used to avoid a
836 brute-force search for a combination of true name and module name.
837 While symtree names, the name that a particular symbol is known by
838 can changed with USE statements, we still have to keep track of the
839 true names to generate the correct reference, and also avoid
840 loading the same real symbol twice in a program unit.
842 When we start reading, the true name tree is built and maintained
843 as symbols are read. The tree is searched as we load new symbols
844 to see if it already exists someplace in the namespace. */
846 typedef struct true_name
848 BBT_HEADER (true_name
);
854 static true_name
*true_name_root
;
857 /* Compare two true_name structures. */
860 compare_true_names (void *_t1
, void *_t2
)
865 t1
= (true_name
*) _t1
;
866 t2
= (true_name
*) _t2
;
868 c
= ((t1
->sym
->module
> t2
->sym
->module
)
869 - (t1
->sym
->module
< t2
->sym
->module
));
873 return strcmp (t1
->name
, t2
->name
);
877 /* Given a true name, search the true name tree to see if it exists
878 within the main namespace. */
881 find_true_name (const char *name
, const char *module
)
887 t
.name
= gfc_get_string (name
);
889 sym
.module
= gfc_get_string (module
);
897 c
= compare_true_names ((void *) (&t
), (void *) p
);
901 p
= (c
< 0) ? p
->left
: p
->right
;
908 /* Given a gfc_symbol pointer that is not in the true name tree, add it. */
911 add_true_name (gfc_symbol
*sym
)
915 t
= XCNEW (true_name
);
917 if (sym
->attr
.flavor
== FL_DERIVED
)
918 t
->name
= dt_upper_string (sym
->name
);
922 gfc_insert_bbt (&true_name_root
, t
, compare_true_names
);
926 /* Recursive function to build the initial true name tree by
927 recursively traversing the current namespace. */
930 build_tnt (gfc_symtree
*st
)
936 build_tnt (st
->left
);
937 build_tnt (st
->right
);
939 if (st
->n
.sym
->attr
.flavor
== FL_DERIVED
)
940 name
= dt_upper_string (st
->n
.sym
->name
);
942 name
= st
->n
.sym
->name
;
944 if (find_true_name (name
, st
->n
.sym
->module
) != NULL
)
947 add_true_name (st
->n
.sym
);
951 /* Initialize the true name tree with the current namespace. */
954 init_true_name_tree (void)
956 true_name_root
= NULL
;
957 build_tnt (gfc_current_ns
->sym_root
);
961 /* Recursively free a true name tree node. */
964 free_true_name (true_name
*t
)
968 free_true_name (t
->left
);
969 free_true_name (t
->right
);
975 /*****************************************************************/
977 /* Module reading and writing. */
979 /* The following are versions similar to the ones in scanner.c, but
980 for dealing with compressed module files. */
983 gzopen_included_file_1 (const char *name
, gfc_directorylist
*list
,
984 bool module
, bool system
)
987 gfc_directorylist
*p
;
990 for (p
= list
; p
; p
= p
->next
)
992 if (module
&& !p
->use_for_modules
)
995 fullname
= (char *) alloca(strlen (p
->path
) + strlen (name
) + 1);
996 strcpy (fullname
, p
->path
);
997 strcat (fullname
, name
);
999 f
= gzopen (fullname
, "r");
1002 if (gfc_cpp_makedep ())
1003 gfc_cpp_add_dep (fullname
, system
);
1013 gzopen_included_file (const char *name
, bool include_cwd
, bool module
)
1017 if (IS_ABSOLUTE_PATH (name
) || include_cwd
)
1019 f
= gzopen (name
, "r");
1020 if (f
&& gfc_cpp_makedep ())
1021 gfc_cpp_add_dep (name
, false);
1025 f
= gzopen_included_file_1 (name
, include_dirs
, module
, false);
1031 gzopen_intrinsic_module (const char* name
)
1035 if (IS_ABSOLUTE_PATH (name
))
1037 f
= gzopen (name
, "r");
1038 if (f
&& gfc_cpp_makedep ())
1039 gfc_cpp_add_dep (name
, true);
1043 f
= gzopen_included_file_1 (name
, intrinsic_modules_dirs
, true, true);
1051 ATOM_NAME
, ATOM_LPAREN
, ATOM_RPAREN
, ATOM_INTEGER
, ATOM_STRING
1055 static atom_type last_atom
;
1058 /* The name buffer must be at least as long as a symbol name. Right
1059 now it's not clear how we're going to store numeric constants--
1060 probably as a hexadecimal string, since this will allow the exact
1061 number to be preserved (this can't be done by a decimal
1062 representation). Worry about that later. TODO! */
1064 #define MAX_ATOM_SIZE 100
1066 static int atom_int
;
1067 static char *atom_string
, atom_name
[MAX_ATOM_SIZE
];
1070 /* Report problems with a module. Error reporting is not very
1071 elaborate, since this sorts of errors shouldn't really happen.
1072 This subroutine never returns. */
1074 static void bad_module (const char *) ATTRIBUTE_NORETURN
;
1077 bad_module (const char *msgid
)
1079 XDELETEVEC (module_content
);
1080 module_content
= NULL
;
1085 gfc_fatal_error ("Reading module %s at line %d column %d: %s",
1086 module_name
, module_line
, module_column
, msgid
);
1089 gfc_fatal_error ("Writing module %s at line %d column %d: %s",
1090 module_name
, module_line
, module_column
, msgid
);
1093 gfc_fatal_error ("Module %s at line %d column %d: %s",
1094 module_name
, module_line
, module_column
, msgid
);
1100 /* Set the module's input pointer. */
1103 set_module_locus (module_locus
*m
)
1105 module_column
= m
->column
;
1106 module_line
= m
->line
;
1107 module_pos
= m
->pos
;
1111 /* Get the module's input pointer so that we can restore it later. */
1114 get_module_locus (module_locus
*m
)
1116 m
->column
= module_column
;
1117 m
->line
= module_line
;
1118 m
->pos
= module_pos
;
1122 /* Get the next character in the module, updating our reckoning of
1128 const char c
= module_content
[module_pos
++];
1130 bad_module ("Unexpected EOF");
1132 prev_module_line
= module_line
;
1133 prev_module_column
= module_column
;
1145 /* Unget a character while remembering the line and column. Works for
1146 a single character only. */
1149 module_unget_char (void)
1151 module_line
= prev_module_line
;
1152 module_column
= prev_module_column
;
1156 /* Parse a string constant. The delimiter is guaranteed to be a
1166 atom_string
= XNEWVEC (char, cursz
);
1174 int c2
= module_char ();
1177 module_unget_char ();
1185 atom_string
= XRESIZEVEC (char, atom_string
, cursz
);
1187 atom_string
[len
] = c
;
1191 atom_string
= XRESIZEVEC (char, atom_string
, len
+ 1);
1192 atom_string
[len
] = '\0'; /* C-style string for debug purposes. */
1196 /* Parse a small integer. */
1199 parse_integer (int c
)
1208 module_unget_char ();
1212 atom_int
= 10 * atom_int
+ c
- '0';
1213 if (atom_int
> 99999999)
1214 bad_module ("Integer overflow");
1236 if (!ISALNUM (c
) && c
!= '_' && c
!= '-')
1238 module_unget_char ();
1243 if (++len
> GFC_MAX_SYMBOL_LEN
)
1244 bad_module ("Name too long");
1252 /* Read the next atom in the module's input stream. */
1263 while (c
== ' ' || c
== '\r' || c
== '\n');
1288 return ATOM_INTEGER
;
1346 bad_module ("Bad name");
1353 /* Peek at the next atom on the input. */
1364 while (c
== ' ' || c
== '\r' || c
== '\n');
1369 module_unget_char ();
1373 module_unget_char ();
1377 module_unget_char ();
1390 module_unget_char ();
1391 return ATOM_INTEGER
;
1445 module_unget_char ();
1449 bad_module ("Bad name");
1454 /* Read the next atom from the input, requiring that it be a
1458 require_atom (atom_type type
)
1464 column
= module_column
;
1473 p
= _("Expected name");
1476 p
= _("Expected left parenthesis");
1479 p
= _("Expected right parenthesis");
1482 p
= _("Expected integer");
1485 p
= _("Expected string");
1488 gfc_internal_error ("require_atom(): bad atom type required");
1491 module_column
= column
;
1498 /* Given a pointer to an mstring array, require that the current input
1499 be one of the strings in the array. We return the enum value. */
1502 find_enum (const mstring
*m
)
1506 i
= gfc_string2code (m
, atom_name
);
1510 bad_module ("find_enum(): Enum not found");
1516 /* Read a string. The caller is responsible for freeing. */
1522 require_atom (ATOM_STRING
);
1529 /**************** Module output subroutines ***************************/
1531 /* Output a character to a module file. */
1534 write_char (char out
)
1536 if (gzputc (module_fp
, out
) == EOF
)
1537 gfc_fatal_error ("Error writing modules file: %s", xstrerror (errno
));
1549 /* Write an atom to a module. The line wrapping isn't perfect, but it
1550 should work most of the time. This isn't that big of a deal, since
1551 the file really isn't meant to be read by people anyway. */
1554 write_atom (atom_type atom
, const void *v
)
1564 p
= (const char *) v
;
1576 i
= *((const int *) v
);
1578 gfc_internal_error ("write_atom(): Writing negative integer");
1580 sprintf (buffer
, "%d", i
);
1585 gfc_internal_error ("write_atom(): Trying to write dab atom");
1589 if(p
== NULL
|| *p
== '\0')
1594 if (atom
!= ATOM_RPAREN
)
1596 if (module_column
+ len
> 72)
1601 if (last_atom
!= ATOM_LPAREN
&& module_column
!= 1)
1606 if (atom
== ATOM_STRING
)
1609 while (p
!= NULL
&& *p
)
1611 if (atom
== ATOM_STRING
&& *p
== '\'')
1616 if (atom
== ATOM_STRING
)
1624 /***************** Mid-level I/O subroutines *****************/
1626 /* These subroutines let their caller read or write atoms without
1627 caring about which of the two is actually happening. This lets a
1628 subroutine concentrate on the actual format of the data being
1631 static void mio_expr (gfc_expr
**);
1632 pointer_info
*mio_symbol_ref (gfc_symbol
**);
1633 pointer_info
*mio_interface_rest (gfc_interface
**);
1634 static void mio_symtree_ref (gfc_symtree
**);
1636 /* Read or write an enumerated value. On writing, we return the input
1637 value for the convenience of callers. We avoid using an integer
1638 pointer because enums are sometimes inside bitfields. */
1641 mio_name (int t
, const mstring
*m
)
1643 if (iomode
== IO_OUTPUT
)
1644 write_atom (ATOM_NAME
, gfc_code2string (m
, t
));
1647 require_atom (ATOM_NAME
);
1654 /* Specialization of mio_name. */
1656 #define DECL_MIO_NAME(TYPE) \
1657 static inline TYPE \
1658 MIO_NAME(TYPE) (TYPE t, const mstring *m) \
1660 return (TYPE) mio_name ((int) t, m); \
1662 #define MIO_NAME(TYPE) mio_name_##TYPE
1667 if (iomode
== IO_OUTPUT
)
1668 write_atom (ATOM_LPAREN
, NULL
);
1670 require_atom (ATOM_LPAREN
);
1677 if (iomode
== IO_OUTPUT
)
1678 write_atom (ATOM_RPAREN
, NULL
);
1680 require_atom (ATOM_RPAREN
);
1685 mio_integer (int *ip
)
1687 if (iomode
== IO_OUTPUT
)
1688 write_atom (ATOM_INTEGER
, ip
);
1691 require_atom (ATOM_INTEGER
);
1697 /* Read or write a gfc_intrinsic_op value. */
1700 mio_intrinsic_op (gfc_intrinsic_op
* op
)
1702 /* FIXME: Would be nicer to do this via the operators symbolic name. */
1703 if (iomode
== IO_OUTPUT
)
1705 int converted
= (int) *op
;
1706 write_atom (ATOM_INTEGER
, &converted
);
1710 require_atom (ATOM_INTEGER
);
1711 *op
= (gfc_intrinsic_op
) atom_int
;
1716 /* Read or write a character pointer that points to a string on the heap. */
1719 mio_allocated_string (const char *s
)
1721 if (iomode
== IO_OUTPUT
)
1723 write_atom (ATOM_STRING
, s
);
1728 require_atom (ATOM_STRING
);
1734 /* Functions for quoting and unquoting strings. */
1737 quote_string (const gfc_char_t
*s
, const size_t slength
)
1739 const gfc_char_t
*p
;
1743 /* Calculate the length we'll need: a backslash takes two ("\\"),
1744 non-printable characters take 10 ("\Uxxxxxxxx") and others take 1. */
1745 for (p
= s
, i
= 0; i
< slength
; p
++, i
++)
1749 else if (!gfc_wide_is_printable (*p
))
1755 q
= res
= XCNEWVEC (char, len
+ 1);
1756 for (p
= s
, i
= 0; i
< slength
; p
++, i
++)
1759 *q
++ = '\\', *q
++ = '\\';
1760 else if (!gfc_wide_is_printable (*p
))
1762 sprintf (q
, "\\U%08" HOST_WIDE_INT_PRINT
"x",
1763 (unsigned HOST_WIDE_INT
) *p
);
1767 *q
++ = (unsigned char) *p
;
1775 unquote_string (const char *s
)
1781 for (p
= s
, len
= 0; *p
; p
++, len
++)
1788 else if (p
[1] == 'U')
1789 p
+= 9; /* That is a "\U????????". */
1791 gfc_internal_error ("unquote_string(): got bad string");
1794 res
= gfc_get_wide_string (len
+ 1);
1795 for (i
= 0, p
= s
; i
< len
; i
++, p
++)
1800 res
[i
] = (unsigned char) *p
;
1801 else if (p
[1] == '\\')
1803 res
[i
] = (unsigned char) '\\';
1808 /* We read the 8-digits hexadecimal constant that follows. */
1813 gcc_assert (p
[1] == 'U');
1814 for (j
= 0; j
< 8; j
++)
1817 gcc_assert (sscanf (&p
[j
+2], "%01x", &n
) == 1);
1831 /* Read or write a character pointer that points to a wide string on the
1832 heap, performing quoting/unquoting of nonprintable characters using the
1833 form \U???????? (where each ? is a hexadecimal digit).
1834 Length is the length of the string, only known and used in output mode. */
1836 static const gfc_char_t
*
1837 mio_allocated_wide_string (const gfc_char_t
*s
, const size_t length
)
1839 if (iomode
== IO_OUTPUT
)
1841 char *quoted
= quote_string (s
, length
);
1842 write_atom (ATOM_STRING
, quoted
);
1848 gfc_char_t
*unquoted
;
1850 require_atom (ATOM_STRING
);
1851 unquoted
= unquote_string (atom_string
);
1858 /* Read or write a string that is in static memory. */
1861 mio_pool_string (const char **stringp
)
1863 /* TODO: one could write the string only once, and refer to it via a
1866 /* As a special case we have to deal with a NULL string. This
1867 happens for the 'module' member of 'gfc_symbol's that are not in a
1868 module. We read / write these as the empty string. */
1869 if (iomode
== IO_OUTPUT
)
1871 const char *p
= *stringp
== NULL
? "" : *stringp
;
1872 write_atom (ATOM_STRING
, p
);
1876 require_atom (ATOM_STRING
);
1877 *stringp
= atom_string
[0] == '\0' ? NULL
: gfc_get_string (atom_string
);
1883 /* Read or write a string that is inside of some already-allocated
1887 mio_internal_string (char *string
)
1889 if (iomode
== IO_OUTPUT
)
1890 write_atom (ATOM_STRING
, string
);
1893 require_atom (ATOM_STRING
);
1894 strcpy (string
, atom_string
);
1901 { AB_ALLOCATABLE
, AB_DIMENSION
, AB_EXTERNAL
, AB_INTRINSIC
, AB_OPTIONAL
,
1902 AB_POINTER
, AB_TARGET
, AB_DUMMY
, AB_RESULT
, AB_DATA
,
1903 AB_IN_NAMELIST
, AB_IN_COMMON
, AB_FUNCTION
, AB_SUBROUTINE
, AB_SEQUENCE
,
1904 AB_ELEMENTAL
, AB_PURE
, AB_RECURSIVE
, AB_GENERIC
, AB_ALWAYS_EXPLICIT
,
1905 AB_CRAY_POINTER
, AB_CRAY_POINTEE
, AB_THREADPRIVATE
,
1906 AB_ALLOC_COMP
, AB_POINTER_COMP
, AB_PROC_POINTER_COMP
, AB_PRIVATE_COMP
,
1907 AB_VALUE
, AB_VOLATILE
, AB_PROTECTED
, AB_LOCK_COMP
,
1908 AB_IS_BIND_C
, AB_IS_C_INTEROP
, AB_IS_ISO_C
, AB_ABSTRACT
, AB_ZERO_COMP
,
1909 AB_IS_CLASS
, AB_PROCEDURE
, AB_PROC_POINTER
, AB_ASYNCHRONOUS
, AB_CODIMENSION
,
1910 AB_COARRAY_COMP
, AB_VTYPE
, AB_VTAB
, AB_CONTIGUOUS
, AB_CLASS_POINTER
,
1911 AB_IMPLICIT_PURE
, AB_ARTIFICIAL
, AB_UNLIMITED_POLY
1915 static const mstring attr_bits
[] =
1917 minit ("ALLOCATABLE", AB_ALLOCATABLE
),
1918 minit ("ARTIFICIAL", AB_ARTIFICIAL
),
1919 minit ("ASYNCHRONOUS", AB_ASYNCHRONOUS
),
1920 minit ("DIMENSION", AB_DIMENSION
),
1921 minit ("CODIMENSION", AB_CODIMENSION
),
1922 minit ("CONTIGUOUS", AB_CONTIGUOUS
),
1923 minit ("EXTERNAL", AB_EXTERNAL
),
1924 minit ("INTRINSIC", AB_INTRINSIC
),
1925 minit ("OPTIONAL", AB_OPTIONAL
),
1926 minit ("POINTER", AB_POINTER
),
1927 minit ("VOLATILE", AB_VOLATILE
),
1928 minit ("TARGET", AB_TARGET
),
1929 minit ("THREADPRIVATE", AB_THREADPRIVATE
),
1930 minit ("DUMMY", AB_DUMMY
),
1931 minit ("RESULT", AB_RESULT
),
1932 minit ("DATA", AB_DATA
),
1933 minit ("IN_NAMELIST", AB_IN_NAMELIST
),
1934 minit ("IN_COMMON", AB_IN_COMMON
),
1935 minit ("FUNCTION", AB_FUNCTION
),
1936 minit ("SUBROUTINE", AB_SUBROUTINE
),
1937 minit ("SEQUENCE", AB_SEQUENCE
),
1938 minit ("ELEMENTAL", AB_ELEMENTAL
),
1939 minit ("PURE", AB_PURE
),
1940 minit ("RECURSIVE", AB_RECURSIVE
),
1941 minit ("GENERIC", AB_GENERIC
),
1942 minit ("ALWAYS_EXPLICIT", AB_ALWAYS_EXPLICIT
),
1943 minit ("CRAY_POINTER", AB_CRAY_POINTER
),
1944 minit ("CRAY_POINTEE", AB_CRAY_POINTEE
),
1945 minit ("IS_BIND_C", AB_IS_BIND_C
),
1946 minit ("IS_C_INTEROP", AB_IS_C_INTEROP
),
1947 minit ("IS_ISO_C", AB_IS_ISO_C
),
1948 minit ("VALUE", AB_VALUE
),
1949 minit ("ALLOC_COMP", AB_ALLOC_COMP
),
1950 minit ("COARRAY_COMP", AB_COARRAY_COMP
),
1951 minit ("LOCK_COMP", AB_LOCK_COMP
),
1952 minit ("POINTER_COMP", AB_POINTER_COMP
),
1953 minit ("PROC_POINTER_COMP", AB_PROC_POINTER_COMP
),
1954 minit ("PRIVATE_COMP", AB_PRIVATE_COMP
),
1955 minit ("ZERO_COMP", AB_ZERO_COMP
),
1956 minit ("PROTECTED", AB_PROTECTED
),
1957 minit ("ABSTRACT", AB_ABSTRACT
),
1958 minit ("IS_CLASS", AB_IS_CLASS
),
1959 minit ("PROCEDURE", AB_PROCEDURE
),
1960 minit ("PROC_POINTER", AB_PROC_POINTER
),
1961 minit ("VTYPE", AB_VTYPE
),
1962 minit ("VTAB", AB_VTAB
),
1963 minit ("CLASS_POINTER", AB_CLASS_POINTER
),
1964 minit ("IMPLICIT_PURE", AB_IMPLICIT_PURE
),
1965 minit ("UNLIMITED_POLY", AB_UNLIMITED_POLY
),
1969 /* For binding attributes. */
1970 static const mstring binding_passing
[] =
1973 minit ("NOPASS", 1),
1976 static const mstring binding_overriding
[] =
1978 minit ("OVERRIDABLE", 0),
1979 minit ("NON_OVERRIDABLE", 1),
1980 minit ("DEFERRED", 2),
1983 static const mstring binding_generic
[] =
1985 minit ("SPECIFIC", 0),
1986 minit ("GENERIC", 1),
1989 static const mstring binding_ppc
[] =
1991 minit ("NO_PPC", 0),
1996 /* Specialization of mio_name. */
1997 DECL_MIO_NAME (ab_attribute
)
1998 DECL_MIO_NAME (ar_type
)
1999 DECL_MIO_NAME (array_type
)
2001 DECL_MIO_NAME (expr_t
)
2002 DECL_MIO_NAME (gfc_access
)
2003 DECL_MIO_NAME (gfc_intrinsic_op
)
2004 DECL_MIO_NAME (ifsrc
)
2005 DECL_MIO_NAME (save_state
)
2006 DECL_MIO_NAME (procedure_type
)
2007 DECL_MIO_NAME (ref_type
)
2008 DECL_MIO_NAME (sym_flavor
)
2009 DECL_MIO_NAME (sym_intent
)
2010 #undef DECL_MIO_NAME
2012 /* Symbol attributes are stored in list with the first three elements
2013 being the enumerated fields, while the remaining elements (if any)
2014 indicate the individual attribute bits. The access field is not
2015 saved-- it controls what symbols are exported when a module is
2019 mio_symbol_attribute (symbol_attribute
*attr
)
2022 unsigned ext_attr
,extension_level
;
2026 attr
->flavor
= MIO_NAME (sym_flavor
) (attr
->flavor
, flavors
);
2027 attr
->intent
= MIO_NAME (sym_intent
) (attr
->intent
, intents
);
2028 attr
->proc
= MIO_NAME (procedure_type
) (attr
->proc
, procedures
);
2029 attr
->if_source
= MIO_NAME (ifsrc
) (attr
->if_source
, ifsrc_types
);
2030 attr
->save
= MIO_NAME (save_state
) (attr
->save
, save_status
);
2032 ext_attr
= attr
->ext_attr
;
2033 mio_integer ((int *) &ext_attr
);
2034 attr
->ext_attr
= ext_attr
;
2036 extension_level
= attr
->extension
;
2037 mio_integer ((int *) &extension_level
);
2038 attr
->extension
= extension_level
;
2040 if (iomode
== IO_OUTPUT
)
2042 if (attr
->allocatable
)
2043 MIO_NAME (ab_attribute
) (AB_ALLOCATABLE
, attr_bits
);
2044 if (attr
->artificial
)
2045 MIO_NAME (ab_attribute
) (AB_ARTIFICIAL
, attr_bits
);
2046 if (attr
->asynchronous
)
2047 MIO_NAME (ab_attribute
) (AB_ASYNCHRONOUS
, attr_bits
);
2048 if (attr
->dimension
)
2049 MIO_NAME (ab_attribute
) (AB_DIMENSION
, attr_bits
);
2050 if (attr
->codimension
)
2051 MIO_NAME (ab_attribute
) (AB_CODIMENSION
, attr_bits
);
2052 if (attr
->contiguous
)
2053 MIO_NAME (ab_attribute
) (AB_CONTIGUOUS
, attr_bits
);
2055 MIO_NAME (ab_attribute
) (AB_EXTERNAL
, attr_bits
);
2056 if (attr
->intrinsic
)
2057 MIO_NAME (ab_attribute
) (AB_INTRINSIC
, attr_bits
);
2059 MIO_NAME (ab_attribute
) (AB_OPTIONAL
, attr_bits
);
2061 MIO_NAME (ab_attribute
) (AB_POINTER
, attr_bits
);
2062 if (attr
->class_pointer
)
2063 MIO_NAME (ab_attribute
) (AB_CLASS_POINTER
, attr_bits
);
2064 if (attr
->is_protected
)
2065 MIO_NAME (ab_attribute
) (AB_PROTECTED
, attr_bits
);
2067 MIO_NAME (ab_attribute
) (AB_VALUE
, attr_bits
);
2068 if (attr
->volatile_
)
2069 MIO_NAME (ab_attribute
) (AB_VOLATILE
, attr_bits
);
2071 MIO_NAME (ab_attribute
) (AB_TARGET
, attr_bits
);
2072 if (attr
->threadprivate
)
2073 MIO_NAME (ab_attribute
) (AB_THREADPRIVATE
, attr_bits
);
2075 MIO_NAME (ab_attribute
) (AB_DUMMY
, attr_bits
);
2077 MIO_NAME (ab_attribute
) (AB_RESULT
, attr_bits
);
2078 /* We deliberately don't preserve the "entry" flag. */
2081 MIO_NAME (ab_attribute
) (AB_DATA
, attr_bits
);
2082 if (attr
->in_namelist
)
2083 MIO_NAME (ab_attribute
) (AB_IN_NAMELIST
, attr_bits
);
2084 if (attr
->in_common
)
2085 MIO_NAME (ab_attribute
) (AB_IN_COMMON
, attr_bits
);
2088 MIO_NAME (ab_attribute
) (AB_FUNCTION
, attr_bits
);
2089 if (attr
->subroutine
)
2090 MIO_NAME (ab_attribute
) (AB_SUBROUTINE
, attr_bits
);
2092 MIO_NAME (ab_attribute
) (AB_GENERIC
, attr_bits
);
2094 MIO_NAME (ab_attribute
) (AB_ABSTRACT
, attr_bits
);
2097 MIO_NAME (ab_attribute
) (AB_SEQUENCE
, attr_bits
);
2098 if (attr
->elemental
)
2099 MIO_NAME (ab_attribute
) (AB_ELEMENTAL
, attr_bits
);
2101 MIO_NAME (ab_attribute
) (AB_PURE
, attr_bits
);
2102 if (attr
->implicit_pure
)
2103 MIO_NAME (ab_attribute
) (AB_IMPLICIT_PURE
, attr_bits
);
2104 if (attr
->unlimited_polymorphic
)
2105 MIO_NAME (ab_attribute
) (AB_UNLIMITED_POLY
, attr_bits
);
2106 if (attr
->recursive
)
2107 MIO_NAME (ab_attribute
) (AB_RECURSIVE
, attr_bits
);
2108 if (attr
->always_explicit
)
2109 MIO_NAME (ab_attribute
) (AB_ALWAYS_EXPLICIT
, attr_bits
);
2110 if (attr
->cray_pointer
)
2111 MIO_NAME (ab_attribute
) (AB_CRAY_POINTER
, attr_bits
);
2112 if (attr
->cray_pointee
)
2113 MIO_NAME (ab_attribute
) (AB_CRAY_POINTEE
, attr_bits
);
2114 if (attr
->is_bind_c
)
2115 MIO_NAME(ab_attribute
) (AB_IS_BIND_C
, attr_bits
);
2116 if (attr
->is_c_interop
)
2117 MIO_NAME(ab_attribute
) (AB_IS_C_INTEROP
, attr_bits
);
2119 MIO_NAME(ab_attribute
) (AB_IS_ISO_C
, attr_bits
);
2120 if (attr
->alloc_comp
)
2121 MIO_NAME (ab_attribute
) (AB_ALLOC_COMP
, attr_bits
);
2122 if (attr
->pointer_comp
)
2123 MIO_NAME (ab_attribute
) (AB_POINTER_COMP
, attr_bits
);
2124 if (attr
->proc_pointer_comp
)
2125 MIO_NAME (ab_attribute
) (AB_PROC_POINTER_COMP
, attr_bits
);
2126 if (attr
->private_comp
)
2127 MIO_NAME (ab_attribute
) (AB_PRIVATE_COMP
, attr_bits
);
2128 if (attr
->coarray_comp
)
2129 MIO_NAME (ab_attribute
) (AB_COARRAY_COMP
, attr_bits
);
2130 if (attr
->lock_comp
)
2131 MIO_NAME (ab_attribute
) (AB_LOCK_COMP
, attr_bits
);
2132 if (attr
->zero_comp
)
2133 MIO_NAME (ab_attribute
) (AB_ZERO_COMP
, attr_bits
);
2135 MIO_NAME (ab_attribute
) (AB_IS_CLASS
, attr_bits
);
2136 if (attr
->procedure
)
2137 MIO_NAME (ab_attribute
) (AB_PROCEDURE
, attr_bits
);
2138 if (attr
->proc_pointer
)
2139 MIO_NAME (ab_attribute
) (AB_PROC_POINTER
, attr_bits
);
2141 MIO_NAME (ab_attribute
) (AB_VTYPE
, attr_bits
);
2143 MIO_NAME (ab_attribute
) (AB_VTAB
, attr_bits
);
2153 if (t
== ATOM_RPAREN
)
2156 bad_module ("Expected attribute bit name");
2158 switch ((ab_attribute
) find_enum (attr_bits
))
2160 case AB_ALLOCATABLE
:
2161 attr
->allocatable
= 1;
2164 attr
->artificial
= 1;
2166 case AB_ASYNCHRONOUS
:
2167 attr
->asynchronous
= 1;
2170 attr
->dimension
= 1;
2172 case AB_CODIMENSION
:
2173 attr
->codimension
= 1;
2176 attr
->contiguous
= 1;
2182 attr
->intrinsic
= 1;
2190 case AB_CLASS_POINTER
:
2191 attr
->class_pointer
= 1;
2194 attr
->is_protected
= 1;
2200 attr
->volatile_
= 1;
2205 case AB_THREADPRIVATE
:
2206 attr
->threadprivate
= 1;
2217 case AB_IN_NAMELIST
:
2218 attr
->in_namelist
= 1;
2221 attr
->in_common
= 1;
2227 attr
->subroutine
= 1;
2239 attr
->elemental
= 1;
2244 case AB_IMPLICIT_PURE
:
2245 attr
->implicit_pure
= 1;
2247 case AB_UNLIMITED_POLY
:
2248 attr
->unlimited_polymorphic
= 1;
2251 attr
->recursive
= 1;
2253 case AB_ALWAYS_EXPLICIT
:
2254 attr
->always_explicit
= 1;
2256 case AB_CRAY_POINTER
:
2257 attr
->cray_pointer
= 1;
2259 case AB_CRAY_POINTEE
:
2260 attr
->cray_pointee
= 1;
2263 attr
->is_bind_c
= 1;
2265 case AB_IS_C_INTEROP
:
2266 attr
->is_c_interop
= 1;
2272 attr
->alloc_comp
= 1;
2274 case AB_COARRAY_COMP
:
2275 attr
->coarray_comp
= 1;
2278 attr
->lock_comp
= 1;
2280 case AB_POINTER_COMP
:
2281 attr
->pointer_comp
= 1;
2283 case AB_PROC_POINTER_COMP
:
2284 attr
->proc_pointer_comp
= 1;
2286 case AB_PRIVATE_COMP
:
2287 attr
->private_comp
= 1;
2290 attr
->zero_comp
= 1;
2296 attr
->procedure
= 1;
2298 case AB_PROC_POINTER
:
2299 attr
->proc_pointer
= 1;
2313 static const mstring bt_types
[] = {
2314 minit ("INTEGER", BT_INTEGER
),
2315 minit ("REAL", BT_REAL
),
2316 minit ("COMPLEX", BT_COMPLEX
),
2317 minit ("LOGICAL", BT_LOGICAL
),
2318 minit ("CHARACTER", BT_CHARACTER
),
2319 minit ("DERIVED", BT_DERIVED
),
2320 minit ("CLASS", BT_CLASS
),
2321 minit ("PROCEDURE", BT_PROCEDURE
),
2322 minit ("UNKNOWN", BT_UNKNOWN
),
2323 minit ("VOID", BT_VOID
),
2324 minit ("ASSUMED", BT_ASSUMED
),
2330 mio_charlen (gfc_charlen
**clp
)
2336 if (iomode
== IO_OUTPUT
)
2340 mio_expr (&cl
->length
);
2344 if (peek_atom () != ATOM_RPAREN
)
2346 cl
= gfc_new_charlen (gfc_current_ns
, NULL
);
2347 mio_expr (&cl
->length
);
2356 /* See if a name is a generated name. */
2359 check_unique_name (const char *name
)
2361 return *name
== '@';
2366 mio_typespec (gfc_typespec
*ts
)
2370 ts
->type
= MIO_NAME (bt
) (ts
->type
, bt_types
);
2372 if (ts
->type
!= BT_DERIVED
&& ts
->type
!= BT_CLASS
)
2373 mio_integer (&ts
->kind
);
2375 mio_symbol_ref (&ts
->u
.derived
);
2377 mio_symbol_ref (&ts
->interface
);
2379 /* Add info for C interop and is_iso_c. */
2380 mio_integer (&ts
->is_c_interop
);
2381 mio_integer (&ts
->is_iso_c
);
2383 /* If the typespec is for an identifier either from iso_c_binding, or
2384 a constant that was initialized to an identifier from it, use the
2385 f90_type. Otherwise, use the ts->type, since it shouldn't matter. */
2387 ts
->f90_type
= MIO_NAME (bt
) (ts
->f90_type
, bt_types
);
2389 ts
->f90_type
= MIO_NAME (bt
) (ts
->type
, bt_types
);
2391 if (ts
->type
!= BT_CHARACTER
)
2393 /* ts->u.cl is only valid for BT_CHARACTER. */
2398 mio_charlen (&ts
->u
.cl
);
2400 /* So as not to disturb the existing API, use an ATOM_NAME to
2401 transmit deferred characteristic for characters (F2003). */
2402 if (iomode
== IO_OUTPUT
)
2404 if (ts
->type
== BT_CHARACTER
&& ts
->deferred
)
2405 write_atom (ATOM_NAME
, "DEFERRED_CL");
2407 else if (peek_atom () != ATOM_RPAREN
)
2409 if (parse_atom () != ATOM_NAME
)
2410 bad_module ("Expected string");
2418 static const mstring array_spec_types
[] = {
2419 minit ("EXPLICIT", AS_EXPLICIT
),
2420 minit ("ASSUMED_RANK", AS_ASSUMED_RANK
),
2421 minit ("ASSUMED_SHAPE", AS_ASSUMED_SHAPE
),
2422 minit ("DEFERRED", AS_DEFERRED
),
2423 minit ("ASSUMED_SIZE", AS_ASSUMED_SIZE
),
2429 mio_array_spec (gfc_array_spec
**asp
)
2436 if (iomode
== IO_OUTPUT
)
2444 /* mio_integer expects nonnegative values. */
2445 rank
= as
->rank
> 0 ? as
->rank
: 0;
2446 mio_integer (&rank
);
2450 if (peek_atom () == ATOM_RPAREN
)
2456 *asp
= as
= gfc_get_array_spec ();
2457 mio_integer (&as
->rank
);
2460 mio_integer (&as
->corank
);
2461 as
->type
= MIO_NAME (array_type
) (as
->type
, array_spec_types
);
2463 if (iomode
== IO_INPUT
&& as
->type
== AS_ASSUMED_RANK
)
2465 if (iomode
== IO_INPUT
&& as
->corank
)
2466 as
->cotype
= (as
->type
== AS_DEFERRED
) ? AS_DEFERRED
: AS_EXPLICIT
;
2468 if (as
->rank
+ as
->corank
> 0)
2469 for (i
= 0; i
< as
->rank
+ as
->corank
; i
++)
2471 mio_expr (&as
->lower
[i
]);
2472 mio_expr (&as
->upper
[i
]);
2480 /* Given a pointer to an array reference structure (which lives in a
2481 gfc_ref structure), find the corresponding array specification
2482 structure. Storing the pointer in the ref structure doesn't quite
2483 work when loading from a module. Generating code for an array
2484 reference also needs more information than just the array spec. */
2486 static const mstring array_ref_types
[] = {
2487 minit ("FULL", AR_FULL
),
2488 minit ("ELEMENT", AR_ELEMENT
),
2489 minit ("SECTION", AR_SECTION
),
2495 mio_array_ref (gfc_array_ref
*ar
)
2500 ar
->type
= MIO_NAME (ar_type
) (ar
->type
, array_ref_types
);
2501 mio_integer (&ar
->dimen
);
2509 for (i
= 0; i
< ar
->dimen
; i
++)
2510 mio_expr (&ar
->start
[i
]);
2515 for (i
= 0; i
< ar
->dimen
; i
++)
2517 mio_expr (&ar
->start
[i
]);
2518 mio_expr (&ar
->end
[i
]);
2519 mio_expr (&ar
->stride
[i
]);
2525 gfc_internal_error ("mio_array_ref(): Unknown array ref");
2528 /* Unfortunately, ar->dimen_type is an anonymous enumerated type so
2529 we can't call mio_integer directly. Instead loop over each element
2530 and cast it to/from an integer. */
2531 if (iomode
== IO_OUTPUT
)
2533 for (i
= 0; i
< ar
->dimen
; i
++)
2535 int tmp
= (int)ar
->dimen_type
[i
];
2536 write_atom (ATOM_INTEGER
, &tmp
);
2541 for (i
= 0; i
< ar
->dimen
; i
++)
2543 require_atom (ATOM_INTEGER
);
2544 ar
->dimen_type
[i
] = (enum gfc_array_ref_dimen_type
) atom_int
;
2548 if (iomode
== IO_INPUT
)
2550 ar
->where
= gfc_current_locus
;
2552 for (i
= 0; i
< ar
->dimen
; i
++)
2553 ar
->c_where
[i
] = gfc_current_locus
;
2560 /* Saves or restores a pointer. The pointer is converted back and
2561 forth from an integer. We return the pointer_info pointer so that
2562 the caller can take additional action based on the pointer type. */
2564 static pointer_info
*
2565 mio_pointer_ref (void *gp
)
2569 if (iomode
== IO_OUTPUT
)
2571 p
= get_pointer (*((char **) gp
));
2572 write_atom (ATOM_INTEGER
, &p
->integer
);
2576 require_atom (ATOM_INTEGER
);
2577 p
= add_fixup (atom_int
, gp
);
2584 /* Save and load references to components that occur within
2585 expressions. We have to describe these references by a number and
2586 by name. The number is necessary for forward references during
2587 reading, and the name is necessary if the symbol already exists in
2588 the namespace and is not loaded again. */
2591 mio_component_ref (gfc_component
**cp
, gfc_symbol
*sym
)
2593 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
2597 p
= mio_pointer_ref (cp
);
2598 if (p
->type
== P_UNKNOWN
)
2599 p
->type
= P_COMPONENT
;
2601 if (iomode
== IO_OUTPUT
)
2602 mio_pool_string (&(*cp
)->name
);
2605 mio_internal_string (name
);
2607 if (sym
&& sym
->attr
.is_class
)
2608 sym
= sym
->components
->ts
.u
.derived
;
2610 /* It can happen that a component reference can be read before the
2611 associated derived type symbol has been loaded. Return now and
2612 wait for a later iteration of load_needed. */
2616 if (sym
->components
!= NULL
&& p
->u
.pointer
== NULL
)
2618 /* Symbol already loaded, so search by name. */
2619 q
= gfc_find_component (sym
, name
, true, true);
2622 associate_integer_pointer (p
, q
);
2625 /* Make sure this symbol will eventually be loaded. */
2626 p
= find_pointer2 (sym
);
2627 if (p
->u
.rsym
.state
== UNUSED
)
2628 p
->u
.rsym
.state
= NEEDED
;
2633 static void mio_namespace_ref (gfc_namespace
**nsp
);
2634 static void mio_formal_arglist (gfc_formal_arglist
**formal
);
2635 static void mio_typebound_proc (gfc_typebound_proc
** proc
);
2638 mio_component (gfc_component
*c
, int vtype
)
2645 if (iomode
== IO_OUTPUT
)
2647 p
= get_pointer (c
);
2648 mio_integer (&p
->integer
);
2653 p
= get_integer (n
);
2654 associate_integer_pointer (p
, c
);
2657 if (p
->type
== P_UNKNOWN
)
2658 p
->type
= P_COMPONENT
;
2660 mio_pool_string (&c
->name
);
2661 mio_typespec (&c
->ts
);
2662 mio_array_spec (&c
->as
);
2664 mio_symbol_attribute (&c
->attr
);
2665 if (c
->ts
.type
== BT_CLASS
)
2666 c
->attr
.class_ok
= 1;
2667 c
->attr
.access
= MIO_NAME (gfc_access
) (c
->attr
.access
, access_types
);
2669 if (!vtype
|| strcmp (c
->name
, "_final") == 0
2670 || strcmp (c
->name
, "_hash") == 0)
2671 mio_expr (&c
->initializer
);
2673 if (c
->attr
.proc_pointer
)
2674 mio_typebound_proc (&c
->tb
);
2681 mio_component_list (gfc_component
**cp
, int vtype
)
2683 gfc_component
*c
, *tail
;
2687 if (iomode
== IO_OUTPUT
)
2689 for (c
= *cp
; c
; c
= c
->next
)
2690 mio_component (c
, vtype
);
2699 if (peek_atom () == ATOM_RPAREN
)
2702 c
= gfc_get_component ();
2703 mio_component (c
, vtype
);
2719 mio_actual_arg (gfc_actual_arglist
*a
)
2722 mio_pool_string (&a
->name
);
2723 mio_expr (&a
->expr
);
2729 mio_actual_arglist (gfc_actual_arglist
**ap
)
2731 gfc_actual_arglist
*a
, *tail
;
2735 if (iomode
== IO_OUTPUT
)
2737 for (a
= *ap
; a
; a
= a
->next
)
2747 if (peek_atom () != ATOM_LPAREN
)
2750 a
= gfc_get_actual_arglist ();
2766 /* Read and write formal argument lists. */
2769 mio_formal_arglist (gfc_formal_arglist
**formal
)
2771 gfc_formal_arglist
*f
, *tail
;
2775 if (iomode
== IO_OUTPUT
)
2777 for (f
= *formal
; f
; f
= f
->next
)
2778 mio_symbol_ref (&f
->sym
);
2782 *formal
= tail
= NULL
;
2784 while (peek_atom () != ATOM_RPAREN
)
2786 f
= gfc_get_formal_arglist ();
2787 mio_symbol_ref (&f
->sym
);
2789 if (*formal
== NULL
)
2802 /* Save or restore a reference to a symbol node. */
2805 mio_symbol_ref (gfc_symbol
**symp
)
2809 p
= mio_pointer_ref (symp
);
2810 if (p
->type
== P_UNKNOWN
)
2813 if (iomode
== IO_OUTPUT
)
2815 if (p
->u
.wsym
.state
== UNREFERENCED
)
2816 p
->u
.wsym
.state
= NEEDS_WRITE
;
2820 if (p
->u
.rsym
.state
== UNUSED
)
2821 p
->u
.rsym
.state
= NEEDED
;
2827 /* Save or restore a reference to a symtree node. */
2830 mio_symtree_ref (gfc_symtree
**stp
)
2835 if (iomode
== IO_OUTPUT
)
2836 mio_symbol_ref (&(*stp
)->n
.sym
);
2839 require_atom (ATOM_INTEGER
);
2840 p
= get_integer (atom_int
);
2842 /* An unused equivalence member; make a symbol and a symtree
2844 if (in_load_equiv
&& p
->u
.rsym
.symtree
== NULL
)
2846 /* Since this is not used, it must have a unique name. */
2847 p
->u
.rsym
.symtree
= gfc_get_unique_symtree (gfc_current_ns
);
2849 /* Make the symbol. */
2850 if (p
->u
.rsym
.sym
== NULL
)
2852 p
->u
.rsym
.sym
= gfc_new_symbol (p
->u
.rsym
.true_name
,
2854 p
->u
.rsym
.sym
->module
= gfc_get_string (p
->u
.rsym
.module
);
2857 p
->u
.rsym
.symtree
->n
.sym
= p
->u
.rsym
.sym
;
2858 p
->u
.rsym
.symtree
->n
.sym
->refs
++;
2859 p
->u
.rsym
.referenced
= 1;
2861 /* If the symbol is PRIVATE and in COMMON, load_commons will
2862 generate a fixup symbol, which must be associated. */
2864 resolve_fixups (p
->fixup
, p
->u
.rsym
.sym
);
2868 if (p
->type
== P_UNKNOWN
)
2871 if (p
->u
.rsym
.state
== UNUSED
)
2872 p
->u
.rsym
.state
= NEEDED
;
2874 if (p
->u
.rsym
.symtree
!= NULL
)
2876 *stp
= p
->u
.rsym
.symtree
;
2880 f
= XCNEW (fixup_t
);
2882 f
->next
= p
->u
.rsym
.stfixup
;
2883 p
->u
.rsym
.stfixup
= f
;
2885 f
->pointer
= (void **) stp
;
2892 mio_iterator (gfc_iterator
**ip
)
2898 if (iomode
== IO_OUTPUT
)
2905 if (peek_atom () == ATOM_RPAREN
)
2911 *ip
= gfc_get_iterator ();
2916 mio_expr (&iter
->var
);
2917 mio_expr (&iter
->start
);
2918 mio_expr (&iter
->end
);
2919 mio_expr (&iter
->step
);
2927 mio_constructor (gfc_constructor_base
*cp
)
2933 if (iomode
== IO_OUTPUT
)
2935 for (c
= gfc_constructor_first (*cp
); c
; c
= gfc_constructor_next (c
))
2938 mio_expr (&c
->expr
);
2939 mio_iterator (&c
->iterator
);
2945 while (peek_atom () != ATOM_RPAREN
)
2947 c
= gfc_constructor_append_expr (cp
, NULL
, NULL
);
2950 mio_expr (&c
->expr
);
2951 mio_iterator (&c
->iterator
);
2960 static const mstring ref_types
[] = {
2961 minit ("ARRAY", REF_ARRAY
),
2962 minit ("COMPONENT", REF_COMPONENT
),
2963 minit ("SUBSTRING", REF_SUBSTRING
),
2969 mio_ref (gfc_ref
**rp
)
2976 r
->type
= MIO_NAME (ref_type
) (r
->type
, ref_types
);
2981 mio_array_ref (&r
->u
.ar
);
2985 mio_symbol_ref (&r
->u
.c
.sym
);
2986 mio_component_ref (&r
->u
.c
.component
, r
->u
.c
.sym
);
2990 mio_expr (&r
->u
.ss
.start
);
2991 mio_expr (&r
->u
.ss
.end
);
2992 mio_charlen (&r
->u
.ss
.length
);
3001 mio_ref_list (gfc_ref
**rp
)
3003 gfc_ref
*ref
, *head
, *tail
;
3007 if (iomode
== IO_OUTPUT
)
3009 for (ref
= *rp
; ref
; ref
= ref
->next
)
3016 while (peek_atom () != ATOM_RPAREN
)
3019 head
= tail
= gfc_get_ref ();
3022 tail
->next
= gfc_get_ref ();
3036 /* Read and write an integer value. */
3039 mio_gmp_integer (mpz_t
*integer
)
3043 if (iomode
== IO_INPUT
)
3045 if (parse_atom () != ATOM_STRING
)
3046 bad_module ("Expected integer string");
3048 mpz_init (*integer
);
3049 if (mpz_set_str (*integer
, atom_string
, 10))
3050 bad_module ("Error converting integer");
3056 p
= mpz_get_str (NULL
, 10, *integer
);
3057 write_atom (ATOM_STRING
, p
);
3064 mio_gmp_real (mpfr_t
*real
)
3069 if (iomode
== IO_INPUT
)
3071 if (parse_atom () != ATOM_STRING
)
3072 bad_module ("Expected real string");
3075 mpfr_set_str (*real
, atom_string
, 16, GFC_RND_MODE
);
3080 p
= mpfr_get_str (NULL
, &exponent
, 16, 0, *real
, GFC_RND_MODE
);
3082 if (mpfr_nan_p (*real
) || mpfr_inf_p (*real
))
3084 write_atom (ATOM_STRING
, p
);
3089 atom_string
= XCNEWVEC (char, strlen (p
) + 20);
3091 sprintf (atom_string
, "0.%s@%ld", p
, exponent
);
3093 /* Fix negative numbers. */
3094 if (atom_string
[2] == '-')
3096 atom_string
[0] = '-';
3097 atom_string
[1] = '0';
3098 atom_string
[2] = '.';
3101 write_atom (ATOM_STRING
, atom_string
);
3109 /* Save and restore the shape of an array constructor. */
3112 mio_shape (mpz_t
**pshape
, int rank
)
3118 /* A NULL shape is represented by (). */
3121 if (iomode
== IO_OUTPUT
)
3133 if (t
== ATOM_RPAREN
)
3140 shape
= gfc_get_shape (rank
);
3144 for (n
= 0; n
< rank
; n
++)
3145 mio_gmp_integer (&shape
[n
]);
3151 static const mstring expr_types
[] = {
3152 minit ("OP", EXPR_OP
),
3153 minit ("FUNCTION", EXPR_FUNCTION
),
3154 minit ("CONSTANT", EXPR_CONSTANT
),
3155 minit ("VARIABLE", EXPR_VARIABLE
),
3156 minit ("SUBSTRING", EXPR_SUBSTRING
),
3157 minit ("STRUCTURE", EXPR_STRUCTURE
),
3158 minit ("ARRAY", EXPR_ARRAY
),
3159 minit ("NULL", EXPR_NULL
),
3160 minit ("COMPCALL", EXPR_COMPCALL
),
3164 /* INTRINSIC_ASSIGN is missing because it is used as an index for
3165 generic operators, not in expressions. INTRINSIC_USER is also
3166 replaced by the correct function name by the time we see it. */
3168 static const mstring intrinsics
[] =
3170 minit ("UPLUS", INTRINSIC_UPLUS
),
3171 minit ("UMINUS", INTRINSIC_UMINUS
),
3172 minit ("PLUS", INTRINSIC_PLUS
),
3173 minit ("MINUS", INTRINSIC_MINUS
),
3174 minit ("TIMES", INTRINSIC_TIMES
),
3175 minit ("DIVIDE", INTRINSIC_DIVIDE
),
3176 minit ("POWER", INTRINSIC_POWER
),
3177 minit ("CONCAT", INTRINSIC_CONCAT
),
3178 minit ("AND", INTRINSIC_AND
),
3179 minit ("OR", INTRINSIC_OR
),
3180 minit ("EQV", INTRINSIC_EQV
),
3181 minit ("NEQV", INTRINSIC_NEQV
),
3182 minit ("EQ_SIGN", INTRINSIC_EQ
),
3183 minit ("EQ", INTRINSIC_EQ_OS
),
3184 minit ("NE_SIGN", INTRINSIC_NE
),
3185 minit ("NE", INTRINSIC_NE_OS
),
3186 minit ("GT_SIGN", INTRINSIC_GT
),
3187 minit ("GT", INTRINSIC_GT_OS
),
3188 minit ("GE_SIGN", INTRINSIC_GE
),
3189 minit ("GE", INTRINSIC_GE_OS
),
3190 minit ("LT_SIGN", INTRINSIC_LT
),
3191 minit ("LT", INTRINSIC_LT_OS
),
3192 minit ("LE_SIGN", INTRINSIC_LE
),
3193 minit ("LE", INTRINSIC_LE_OS
),
3194 minit ("NOT", INTRINSIC_NOT
),
3195 minit ("PARENTHESES", INTRINSIC_PARENTHESES
),
3200 /* Remedy a couple of situations where the gfc_expr's can be defective. */
3203 fix_mio_expr (gfc_expr
*e
)
3205 gfc_symtree
*ns_st
= NULL
;
3208 if (iomode
!= IO_OUTPUT
)
3213 /* If this is a symtree for a symbol that came from a contained module
3214 namespace, it has a unique name and we should look in the current
3215 namespace to see if the required, non-contained symbol is available
3216 yet. If so, the latter should be written. */
3217 if (e
->symtree
->n
.sym
&& check_unique_name (e
->symtree
->name
))
3219 const char *name
= e
->symtree
->n
.sym
->name
;
3220 if (e
->symtree
->n
.sym
->attr
.flavor
== FL_DERIVED
)
3221 name
= dt_upper_string (name
);
3222 ns_st
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
3225 /* On the other hand, if the existing symbol is the module name or the
3226 new symbol is a dummy argument, do not do the promotion. */
3227 if (ns_st
&& ns_st
->n
.sym
3228 && ns_st
->n
.sym
->attr
.flavor
!= FL_MODULE
3229 && !e
->symtree
->n
.sym
->attr
.dummy
)
3232 else if (e
->expr_type
== EXPR_FUNCTION
&& e
->value
.function
.name
)
3236 /* In some circumstances, a function used in an initialization
3237 expression, in one use associated module, can fail to be
3238 coupled to its symtree when used in a specification
3239 expression in another module. */
3240 fname
= e
->value
.function
.esym
? e
->value
.function
.esym
->name
3241 : e
->value
.function
.isym
->name
;
3242 e
->symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, fname
);
3247 /* This is probably a reference to a private procedure from another
3248 module. To prevent a segfault, make a generic with no specific
3249 instances. If this module is used, without the required
3250 specific coming from somewhere, the appropriate error message
3252 gfc_get_symbol (fname
, gfc_current_ns
, &sym
);
3253 sym
->attr
.flavor
= FL_PROCEDURE
;
3254 sym
->attr
.generic
= 1;
3255 e
->symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, fname
);
3256 gfc_commit_symbol (sym
);
3261 /* Read and write expressions. The form "()" is allowed to indicate a
3265 mio_expr (gfc_expr
**ep
)
3273 if (iomode
== IO_OUTPUT
)
3282 MIO_NAME (expr_t
) (e
->expr_type
, expr_types
);
3287 if (t
== ATOM_RPAREN
)
3294 bad_module ("Expected expression type");
3296 e
= *ep
= gfc_get_expr ();
3297 e
->where
= gfc_current_locus
;
3298 e
->expr_type
= (expr_t
) find_enum (expr_types
);
3301 mio_typespec (&e
->ts
);
3302 mio_integer (&e
->rank
);
3306 switch (e
->expr_type
)
3310 = MIO_NAME (gfc_intrinsic_op
) (e
->value
.op
.op
, intrinsics
);
3312 switch (e
->value
.op
.op
)
3314 case INTRINSIC_UPLUS
:
3315 case INTRINSIC_UMINUS
:
3317 case INTRINSIC_PARENTHESES
:
3318 mio_expr (&e
->value
.op
.op1
);
3321 case INTRINSIC_PLUS
:
3322 case INTRINSIC_MINUS
:
3323 case INTRINSIC_TIMES
:
3324 case INTRINSIC_DIVIDE
:
3325 case INTRINSIC_POWER
:
3326 case INTRINSIC_CONCAT
:
3330 case INTRINSIC_NEQV
:
3332 case INTRINSIC_EQ_OS
:
3334 case INTRINSIC_NE_OS
:
3336 case INTRINSIC_GT_OS
:
3338 case INTRINSIC_GE_OS
:
3340 case INTRINSIC_LT_OS
:
3342 case INTRINSIC_LE_OS
:
3343 mio_expr (&e
->value
.op
.op1
);
3344 mio_expr (&e
->value
.op
.op2
);
3348 bad_module ("Bad operator");
3354 mio_symtree_ref (&e
->symtree
);
3355 mio_actual_arglist (&e
->value
.function
.actual
);
3357 if (iomode
== IO_OUTPUT
)
3359 e
->value
.function
.name
3360 = mio_allocated_string (e
->value
.function
.name
);
3361 flag
= e
->value
.function
.esym
!= NULL
;
3362 mio_integer (&flag
);
3364 mio_symbol_ref (&e
->value
.function
.esym
);
3366 write_atom (ATOM_STRING
, e
->value
.function
.isym
->name
);
3370 require_atom (ATOM_STRING
);
3371 e
->value
.function
.name
= gfc_get_string (atom_string
);
3374 mio_integer (&flag
);
3376 mio_symbol_ref (&e
->value
.function
.esym
);
3379 require_atom (ATOM_STRING
);
3380 e
->value
.function
.isym
= gfc_find_function (atom_string
);
3388 mio_symtree_ref (&e
->symtree
);
3389 mio_ref_list (&e
->ref
);
3392 case EXPR_SUBSTRING
:
3393 e
->value
.character
.string
3394 = CONST_CAST (gfc_char_t
*,
3395 mio_allocated_wide_string (e
->value
.character
.string
,
3396 e
->value
.character
.length
));
3397 mio_ref_list (&e
->ref
);
3400 case EXPR_STRUCTURE
:
3402 mio_constructor (&e
->value
.constructor
);
3403 mio_shape (&e
->shape
, e
->rank
);
3410 mio_gmp_integer (&e
->value
.integer
);
3414 gfc_set_model_kind (e
->ts
.kind
);
3415 mio_gmp_real (&e
->value
.real
);
3419 gfc_set_model_kind (e
->ts
.kind
);
3420 mio_gmp_real (&mpc_realref (e
->value
.complex));
3421 mio_gmp_real (&mpc_imagref (e
->value
.complex));
3425 mio_integer (&e
->value
.logical
);
3429 mio_integer (&e
->value
.character
.length
);
3430 e
->value
.character
.string
3431 = CONST_CAST (gfc_char_t
*,
3432 mio_allocated_wide_string (e
->value
.character
.string
,
3433 e
->value
.character
.length
));
3437 bad_module ("Bad type in constant expression");
3455 /* Read and write namelists. */
3458 mio_namelist (gfc_symbol
*sym
)
3460 gfc_namelist
*n
, *m
;
3461 const char *check_name
;
3465 if (iomode
== IO_OUTPUT
)
3467 for (n
= sym
->namelist
; n
; n
= n
->next
)
3468 mio_symbol_ref (&n
->sym
);
3472 /* This departure from the standard is flagged as an error.
3473 It does, in fact, work correctly. TODO: Allow it
3475 if (sym
->attr
.flavor
== FL_NAMELIST
)
3477 check_name
= find_use_name (sym
->name
, false);
3478 if (check_name
&& strcmp (check_name
, sym
->name
) != 0)
3479 gfc_error ("Namelist %s cannot be renamed by USE "
3480 "association to %s", sym
->name
, check_name
);
3484 while (peek_atom () != ATOM_RPAREN
)
3486 n
= gfc_get_namelist ();
3487 mio_symbol_ref (&n
->sym
);
3489 if (sym
->namelist
== NULL
)
3496 sym
->namelist_tail
= m
;
3503 /* Save/restore lists of gfc_interface structures. When loading an
3504 interface, we are really appending to the existing list of
3505 interfaces. Checking for duplicate and ambiguous interfaces has to
3506 be done later when all symbols have been loaded. */
3509 mio_interface_rest (gfc_interface
**ip
)
3511 gfc_interface
*tail
, *p
;
3512 pointer_info
*pi
= NULL
;
3514 if (iomode
== IO_OUTPUT
)
3517 for (p
= *ip
; p
; p
= p
->next
)
3518 mio_symbol_ref (&p
->sym
);
3533 if (peek_atom () == ATOM_RPAREN
)
3536 p
= gfc_get_interface ();
3537 p
->where
= gfc_current_locus
;
3538 pi
= mio_symbol_ref (&p
->sym
);
3554 /* Save/restore a nameless operator interface. */
3557 mio_interface (gfc_interface
**ip
)
3560 mio_interface_rest (ip
);
3564 /* Save/restore a named operator interface. */
3567 mio_symbol_interface (const char **name
, const char **module
,
3571 mio_pool_string (name
);
3572 mio_pool_string (module
);
3573 mio_interface_rest (ip
);
3578 mio_namespace_ref (gfc_namespace
**nsp
)
3583 p
= mio_pointer_ref (nsp
);
3585 if (p
->type
== P_UNKNOWN
)
3586 p
->type
= P_NAMESPACE
;
3588 if (iomode
== IO_INPUT
&& p
->integer
!= 0)
3590 ns
= (gfc_namespace
*) p
->u
.pointer
;
3593 ns
= gfc_get_namespace (NULL
, 0);
3594 associate_integer_pointer (p
, ns
);
3602 /* Save/restore the f2k_derived namespace of a derived-type symbol. */
3604 static gfc_namespace
* current_f2k_derived
;
3607 mio_typebound_proc (gfc_typebound_proc
** proc
)
3610 int overriding_flag
;
3612 if (iomode
== IO_INPUT
)
3614 *proc
= gfc_get_typebound_proc (NULL
);
3615 (*proc
)->where
= gfc_current_locus
;
3621 (*proc
)->access
= MIO_NAME (gfc_access
) ((*proc
)->access
, access_types
);
3623 /* IO the NON_OVERRIDABLE/DEFERRED combination. */
3624 gcc_assert (!((*proc
)->deferred
&& (*proc
)->non_overridable
));
3625 overriding_flag
= ((*proc
)->deferred
<< 1) | (*proc
)->non_overridable
;
3626 overriding_flag
= mio_name (overriding_flag
, binding_overriding
);
3627 (*proc
)->deferred
= ((overriding_flag
& 2) != 0);
3628 (*proc
)->non_overridable
= ((overriding_flag
& 1) != 0);
3629 gcc_assert (!((*proc
)->deferred
&& (*proc
)->non_overridable
));
3631 (*proc
)->nopass
= mio_name ((*proc
)->nopass
, binding_passing
);
3632 (*proc
)->is_generic
= mio_name ((*proc
)->is_generic
, binding_generic
);
3633 (*proc
)->ppc
= mio_name((*proc
)->ppc
, binding_ppc
);
3635 mio_pool_string (&((*proc
)->pass_arg
));
3637 flag
= (int) (*proc
)->pass_arg_num
;
3638 mio_integer (&flag
);
3639 (*proc
)->pass_arg_num
= (unsigned) flag
;
3641 if ((*proc
)->is_generic
)
3648 if (iomode
== IO_OUTPUT
)
3649 for (g
= (*proc
)->u
.generic
; g
; g
= g
->next
)
3651 iop
= (int) g
->is_operator
;
3653 mio_allocated_string (g
->specific_st
->name
);
3657 (*proc
)->u
.generic
= NULL
;
3658 while (peek_atom () != ATOM_RPAREN
)
3660 gfc_symtree
** sym_root
;
3662 g
= gfc_get_tbp_generic ();
3666 g
->is_operator
= (bool) iop
;
3668 require_atom (ATOM_STRING
);
3669 sym_root
= ¤t_f2k_derived
->tb_sym_root
;
3670 g
->specific_st
= gfc_get_tbp_symtree (sym_root
, atom_string
);
3673 g
->next
= (*proc
)->u
.generic
;
3674 (*proc
)->u
.generic
= g
;
3680 else if (!(*proc
)->ppc
)
3681 mio_symtree_ref (&(*proc
)->u
.specific
);
3686 /* Walker-callback function for this purpose. */
3688 mio_typebound_symtree (gfc_symtree
* st
)
3690 if (iomode
== IO_OUTPUT
&& !st
->n
.tb
)
3693 if (iomode
== IO_OUTPUT
)
3696 mio_allocated_string (st
->name
);
3698 /* For IO_INPUT, the above is done in mio_f2k_derived. */
3700 mio_typebound_proc (&st
->n
.tb
);
3704 /* IO a full symtree (in all depth). */
3706 mio_full_typebound_tree (gfc_symtree
** root
)
3710 if (iomode
== IO_OUTPUT
)
3711 gfc_traverse_symtree (*root
, &mio_typebound_symtree
);
3714 while (peek_atom () == ATOM_LPAREN
)
3720 require_atom (ATOM_STRING
);
3721 st
= gfc_get_tbp_symtree (root
, atom_string
);
3724 mio_typebound_symtree (st
);
3732 mio_finalizer (gfc_finalizer
**f
)
3734 if (iomode
== IO_OUTPUT
)
3737 gcc_assert ((*f
)->proc_tree
); /* Should already be resolved. */
3738 mio_symtree_ref (&(*f
)->proc_tree
);
3742 *f
= gfc_get_finalizer ();
3743 (*f
)->where
= gfc_current_locus
; /* Value should not matter. */
3746 mio_symtree_ref (&(*f
)->proc_tree
);
3747 (*f
)->proc_sym
= NULL
;
3752 mio_f2k_derived (gfc_namespace
*f2k
)
3754 current_f2k_derived
= f2k
;
3756 /* Handle the list of finalizer procedures. */
3758 if (iomode
== IO_OUTPUT
)
3761 for (f
= f2k
->finalizers
; f
; f
= f
->next
)
3766 f2k
->finalizers
= NULL
;
3767 while (peek_atom () != ATOM_RPAREN
)
3769 gfc_finalizer
*cur
= NULL
;
3770 mio_finalizer (&cur
);
3771 cur
->next
= f2k
->finalizers
;
3772 f2k
->finalizers
= cur
;
3777 /* Handle type-bound procedures. */
3778 mio_full_typebound_tree (&f2k
->tb_sym_root
);
3780 /* Type-bound user operators. */
3781 mio_full_typebound_tree (&f2k
->tb_uop_root
);
3783 /* Type-bound intrinsic operators. */
3785 if (iomode
== IO_OUTPUT
)
3788 for (op
= GFC_INTRINSIC_BEGIN
; op
!= GFC_INTRINSIC_END
; ++op
)
3790 gfc_intrinsic_op realop
;
3792 if (op
== INTRINSIC_USER
|| !f2k
->tb_op
[op
])
3796 realop
= (gfc_intrinsic_op
) op
;
3797 mio_intrinsic_op (&realop
);
3798 mio_typebound_proc (&f2k
->tb_op
[op
]);
3803 while (peek_atom () != ATOM_RPAREN
)
3805 gfc_intrinsic_op op
= GFC_INTRINSIC_BEGIN
; /* Silence GCC. */
3808 mio_intrinsic_op (&op
);
3809 mio_typebound_proc (&f2k
->tb_op
[op
]);
3816 mio_full_f2k_derived (gfc_symbol
*sym
)
3820 if (iomode
== IO_OUTPUT
)
3822 if (sym
->f2k_derived
)
3823 mio_f2k_derived (sym
->f2k_derived
);
3827 if (peek_atom () != ATOM_RPAREN
)
3829 sym
->f2k_derived
= gfc_get_namespace (NULL
, 0);
3830 mio_f2k_derived (sym
->f2k_derived
);
3833 gcc_assert (!sym
->f2k_derived
);
3840 /* Unlike most other routines, the address of the symbol node is already
3841 fixed on input and the name/module has already been filled in. */
3844 mio_symbol (gfc_symbol
*sym
)
3846 int intmod
= INTMOD_NONE
;
3850 mio_symbol_attribute (&sym
->attr
);
3851 mio_typespec (&sym
->ts
);
3852 if (sym
->ts
.type
== BT_CLASS
)
3853 sym
->attr
.class_ok
= 1;
3855 if (iomode
== IO_OUTPUT
)
3856 mio_namespace_ref (&sym
->formal_ns
);
3859 mio_namespace_ref (&sym
->formal_ns
);
3861 sym
->formal_ns
->proc_name
= sym
;
3864 /* Save/restore common block links. */
3865 mio_symbol_ref (&sym
->common_next
);
3867 mio_formal_arglist (&sym
->formal
);
3869 if (sym
->attr
.flavor
== FL_PARAMETER
)
3870 mio_expr (&sym
->value
);
3872 mio_array_spec (&sym
->as
);
3874 mio_symbol_ref (&sym
->result
);
3876 if (sym
->attr
.cray_pointee
)
3877 mio_symbol_ref (&sym
->cp_pointer
);
3879 /* Note that components are always saved, even if they are supposed
3880 to be private. Component access is checked during searching. */
3882 mio_component_list (&sym
->components
, sym
->attr
.vtype
);
3884 if (sym
->components
!= NULL
)
3885 sym
->component_access
3886 = MIO_NAME (gfc_access
) (sym
->component_access
, access_types
);
3888 /* Load/save the f2k_derived namespace of a derived-type symbol. */
3889 mio_full_f2k_derived (sym
);
3893 /* Add the fields that say whether this is from an intrinsic module,
3894 and if so, what symbol it is within the module. */
3895 /* mio_integer (&(sym->from_intmod)); */
3896 if (iomode
== IO_OUTPUT
)
3898 intmod
= sym
->from_intmod
;
3899 mio_integer (&intmod
);
3903 mio_integer (&intmod
);
3904 sym
->from_intmod
= (intmod_id
) intmod
;
3907 mio_integer (&(sym
->intmod_sym_id
));
3909 if (sym
->attr
.flavor
== FL_DERIVED
)
3910 mio_integer (&(sym
->hash_value
));
3916 /************************* Top level subroutines *************************/
3918 /* Given a root symtree node and a symbol, try to find a symtree that
3919 references the symbol that is not a unique name. */
3921 static gfc_symtree
*
3922 find_symtree_for_symbol (gfc_symtree
*st
, gfc_symbol
*sym
)
3924 gfc_symtree
*s
= NULL
;
3929 s
= find_symtree_for_symbol (st
->right
, sym
);
3932 s
= find_symtree_for_symbol (st
->left
, sym
);
3936 if (st
->n
.sym
== sym
&& !check_unique_name (st
->name
))
3943 /* A recursive function to look for a specific symbol by name and by
3944 module. Whilst several symtrees might point to one symbol, its
3945 is sufficient for the purposes here than one exist. Note that
3946 generic interfaces are distinguished as are symbols that have been
3947 renamed in another module. */
3948 static gfc_symtree
*
3949 find_symbol (gfc_symtree
*st
, const char *name
,
3950 const char *module
, int generic
)
3953 gfc_symtree
*retval
, *s
;
3955 if (st
== NULL
|| st
->n
.sym
== NULL
)
3958 c
= strcmp (name
, st
->n
.sym
->name
);
3959 if (c
== 0 && st
->n
.sym
->module
3960 && strcmp (module
, st
->n
.sym
->module
) == 0
3961 && !check_unique_name (st
->name
))
3963 s
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
3965 /* Detect symbols that are renamed by use association in another
3966 module by the absence of a symtree and null attr.use_rename,
3967 since the latter is not transmitted in the module file. */
3968 if (((!generic
&& !st
->n
.sym
->attr
.generic
)
3969 || (generic
&& st
->n
.sym
->attr
.generic
))
3970 && !(s
== NULL
&& !st
->n
.sym
->attr
.use_rename
))
3974 retval
= find_symbol (st
->left
, name
, module
, generic
);
3977 retval
= find_symbol (st
->right
, name
, module
, generic
);
3983 /* Skip a list between balanced left and right parens. */
3993 switch (parse_atom ())
4016 /* Load operator interfaces from the module. Interfaces are unusual
4017 in that they attach themselves to existing symbols. */
4020 load_operator_interfaces (void)
4023 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module
[GFC_MAX_SYMBOL_LEN
+ 1];
4025 pointer_info
*pi
= NULL
;
4030 while (peek_atom () != ATOM_RPAREN
)
4034 mio_internal_string (name
);
4035 mio_internal_string (module
);
4037 n
= number_use_names (name
, true);
4040 for (i
= 1; i
<= n
; i
++)
4042 /* Decide if we need to load this one or not. */
4043 p
= find_use_name_n (name
, &i
, true);
4047 while (parse_atom () != ATOM_RPAREN
);
4053 uop
= gfc_get_uop (p
);
4054 pi
= mio_interface_rest (&uop
->op
);
4058 if (gfc_find_uop (p
, NULL
))
4060 uop
= gfc_get_uop (p
);
4061 uop
->op
= gfc_get_interface ();
4062 uop
->op
->where
= gfc_current_locus
;
4063 add_fixup (pi
->integer
, &uop
->op
->sym
);
4072 /* Load interfaces from the module. Interfaces are unusual in that
4073 they attach themselves to existing symbols. */
4076 load_generic_interfaces (void)
4079 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module
[GFC_MAX_SYMBOL_LEN
+ 1];
4081 gfc_interface
*generic
= NULL
, *gen
= NULL
;
4083 bool ambiguous_set
= false;
4087 while (peek_atom () != ATOM_RPAREN
)
4091 mio_internal_string (name
);
4092 mio_internal_string (module
);
4094 n
= number_use_names (name
, false);
4095 renamed
= n
? 1 : 0;
4098 for (i
= 1; i
<= n
; i
++)
4101 /* Decide if we need to load this one or not. */
4102 p
= find_use_name_n (name
, &i
, false);
4104 st
= find_symbol (gfc_current_ns
->sym_root
,
4105 name
, module_name
, 1);
4107 if (!p
|| gfc_find_symbol (p
, NULL
, 0, &sym
))
4109 /* Skip the specific names for these cases. */
4110 while (i
== 1 && parse_atom () != ATOM_RPAREN
);
4115 /* If the symbol exists already and is being USEd without being
4116 in an ONLY clause, do not load a new symtree(11.3.2). */
4117 if (!only_flag
&& st
)
4125 if (strcmp (st
->name
, p
) != 0)
4127 st
= gfc_new_symtree (&gfc_current_ns
->sym_root
, p
);
4133 /* Since we haven't found a valid generic interface, we had
4137 gfc_get_symbol (p
, NULL
, &sym
);
4138 sym
->name
= gfc_get_string (name
);
4139 sym
->module
= module_name
;
4140 sym
->attr
.flavor
= FL_PROCEDURE
;
4141 sym
->attr
.generic
= 1;
4142 sym
->attr
.use_assoc
= 1;
4147 /* Unless sym is a generic interface, this reference
4150 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, p
);
4154 if (st
&& !sym
->attr
.generic
4157 && strcmp (module
, sym
->module
))
4159 ambiguous_set
= true;
4164 sym
->attr
.use_only
= only_flag
;
4165 sym
->attr
.use_rename
= renamed
;
4169 mio_interface_rest (&sym
->generic
);
4170 generic
= sym
->generic
;
4172 else if (!sym
->generic
)
4174 sym
->generic
= generic
;
4175 sym
->attr
.generic_copy
= 1;
4178 /* If a procedure that is not generic has generic interfaces
4179 that include itself, it is generic! We need to take care
4180 to retain symbols ambiguous that were already so. */
4181 if (sym
->attr
.use_assoc
4182 && !sym
->attr
.generic
4183 && sym
->attr
.flavor
== FL_PROCEDURE
)
4185 for (gen
= generic
; gen
; gen
= gen
->next
)
4187 if (gen
->sym
== sym
)
4189 sym
->attr
.generic
= 1;
4204 /* Load common blocks. */
4209 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
4214 while (peek_atom () != ATOM_RPAREN
)
4219 mio_internal_string (name
);
4221 p
= gfc_get_common (name
, 1);
4223 mio_symbol_ref (&p
->head
);
4224 mio_integer (&flags
);
4228 p
->threadprivate
= 1;
4231 /* Get whether this was a bind(c) common or not. */
4232 mio_integer (&p
->is_bind_c
);
4233 /* Get the binding label. */
4234 label
= read_string ();
4236 p
->binding_label
= IDENTIFIER_POINTER (get_identifier (label
));
4246 /* Load equivalences. The flag in_load_equiv informs mio_expr_ref of this
4247 so that unused variables are not loaded and so that the expression can
4253 gfc_equiv
*head
, *tail
, *end
, *eq
;
4257 in_load_equiv
= true;
4259 end
= gfc_current_ns
->equiv
;
4260 while (end
!= NULL
&& end
->next
!= NULL
)
4263 while (peek_atom () != ATOM_RPAREN
) {
4267 while(peek_atom () != ATOM_RPAREN
)
4270 head
= tail
= gfc_get_equiv ();
4273 tail
->eq
= gfc_get_equiv ();
4277 mio_pool_string (&tail
->module
);
4278 mio_expr (&tail
->expr
);
4281 /* Unused equivalence members have a unique name. In addition, it
4282 must be checked that the symbols are from the same module. */
4284 for (eq
= head
; eq
; eq
= eq
->eq
)
4286 if (eq
->expr
->symtree
->n
.sym
->module
4287 && head
->expr
->symtree
->n
.sym
->module
4288 && strcmp (head
->expr
->symtree
->n
.sym
->module
,
4289 eq
->expr
->symtree
->n
.sym
->module
) == 0
4290 && !check_unique_name (eq
->expr
->symtree
->name
))
4299 for (eq
= head
; eq
; eq
= head
)
4302 gfc_free_expr (eq
->expr
);
4308 gfc_current_ns
->equiv
= head
;
4319 in_load_equiv
= false;
4323 /* This function loads the sym_root of f2k_derived with the extensions to
4324 the derived type. */
4326 load_derived_extensions (void)
4329 gfc_symbol
*derived
;
4333 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
4334 char module
[GFC_MAX_SYMBOL_LEN
+ 1];
4338 while (peek_atom () != ATOM_RPAREN
)
4341 mio_integer (&symbol
);
4342 info
= get_integer (symbol
);
4343 derived
= info
->u
.rsym
.sym
;
4345 /* This one is not being loaded. */
4346 if (!info
|| !derived
)
4348 while (peek_atom () != ATOM_RPAREN
)
4353 gcc_assert (derived
->attr
.flavor
== FL_DERIVED
);
4354 if (derived
->f2k_derived
== NULL
)
4355 derived
->f2k_derived
= gfc_get_namespace (NULL
, 0);
4357 while (peek_atom () != ATOM_RPAREN
)
4360 mio_internal_string (name
);
4361 mio_internal_string (module
);
4363 /* Only use one use name to find the symbol. */
4365 p
= find_use_name_n (name
, &j
, false);
4368 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, p
);
4370 st
= gfc_find_symtree (derived
->f2k_derived
->sym_root
, name
);
4373 /* Only use the real name in f2k_derived to ensure a single
4375 st
= gfc_new_symtree (&derived
->f2k_derived
->sym_root
, name
);
4388 /* Recursive function to traverse the pointer_info tree and load a
4389 needed symbol. We return nonzero if we load a symbol and stop the
4390 traversal, because the act of loading can alter the tree. */
4393 load_needed (pointer_info
*p
)
4404 rv
|= load_needed (p
->left
);
4405 rv
|= load_needed (p
->right
);
4407 if (p
->type
!= P_SYMBOL
|| p
->u
.rsym
.state
!= NEEDED
)
4410 p
->u
.rsym
.state
= USED
;
4412 set_module_locus (&p
->u
.rsym
.where
);
4414 sym
= p
->u
.rsym
.sym
;
4417 q
= get_integer (p
->u
.rsym
.ns
);
4419 ns
= (gfc_namespace
*) q
->u
.pointer
;
4422 /* Create an interface namespace if necessary. These are
4423 the namespaces that hold the formal parameters of module
4426 ns
= gfc_get_namespace (NULL
, 0);
4427 associate_integer_pointer (q
, ns
);
4430 /* Use the module sym as 'proc_name' so that gfc_get_symbol_decl
4431 doesn't go pear-shaped if the symbol is used. */
4433 gfc_find_symbol (p
->u
.rsym
.module
, gfc_current_ns
,
4436 sym
= gfc_new_symbol (p
->u
.rsym
.true_name
, ns
);
4437 sym
->name
= dt_lower_string (p
->u
.rsym
.true_name
);
4438 sym
->module
= gfc_get_string (p
->u
.rsym
.module
);
4439 if (p
->u
.rsym
.binding_label
)
4440 sym
->binding_label
= IDENTIFIER_POINTER (get_identifier
4441 (p
->u
.rsym
.binding_label
));
4443 associate_integer_pointer (p
, sym
);
4447 sym
->attr
.use_assoc
= 1;
4449 /* Mark as only or rename for later diagnosis for explicitly imported
4450 but not used warnings; don't mark internal symbols such as __vtab,
4451 __def_init etc. Only mark them if they have been explicitly loaded. */
4453 if (only_flag
&& sym
->name
[0] != '_' && sym
->name
[1] != '_')
4457 /* Search the use/rename list for the variable; if the variable is
4459 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4461 if (strcmp (u
->use_name
, sym
->name
) == 0)
4463 sym
->attr
.use_only
= 1;
4469 if (p
->u
.rsym
.renamed
)
4470 sym
->attr
.use_rename
= 1;
4476 /* Recursive function for cleaning up things after a module has been read. */
4479 read_cleanup (pointer_info
*p
)
4487 read_cleanup (p
->left
);
4488 read_cleanup (p
->right
);
4490 if (p
->type
== P_SYMBOL
&& p
->u
.rsym
.state
== USED
&& !p
->u
.rsym
.referenced
)
4493 /* Add hidden symbols to the symtree. */
4494 q
= get_integer (p
->u
.rsym
.ns
);
4495 ns
= (gfc_namespace
*) q
->u
.pointer
;
4497 if (!p
->u
.rsym
.sym
->attr
.vtype
4498 && !p
->u
.rsym
.sym
->attr
.vtab
)
4499 st
= gfc_get_unique_symtree (ns
);
4502 /* There is no reason to use 'unique_symtrees' for vtabs or
4503 vtypes - their name is fine for a symtree and reduces the
4504 namespace pollution. */
4505 st
= gfc_find_symtree (ns
->sym_root
, p
->u
.rsym
.sym
->name
);
4507 st
= gfc_new_symtree (&ns
->sym_root
, p
->u
.rsym
.sym
->name
);
4510 st
->n
.sym
= p
->u
.rsym
.sym
;
4513 /* Fixup any symtree references. */
4514 p
->u
.rsym
.symtree
= st
;
4515 resolve_fixups (p
->u
.rsym
.stfixup
, st
);
4516 p
->u
.rsym
.stfixup
= NULL
;
4519 /* Free unused symbols. */
4520 if (p
->type
== P_SYMBOL
&& p
->u
.rsym
.state
== UNUSED
)
4521 gfc_free_symbol (p
->u
.rsym
.sym
);
4525 /* It is not quite enough to check for ambiguity in the symbols by
4526 the loaded symbol and the new symbol not being identical. */
4528 check_for_ambiguous (gfc_symbol
*st_sym
, pointer_info
*info
)
4532 symbol_attribute attr
;
4534 if (gfc_current_ns
->proc_name
&& st_sym
->name
== gfc_current_ns
->proc_name
->name
)
4536 gfc_error ("'%s' of module '%s', imported at %C, is also the name of the "
4537 "current program unit", st_sym
->name
, module_name
);
4541 rsym
= info
->u
.rsym
.sym
;
4545 if (st_sym
->attr
.vtab
|| st_sym
->attr
.vtype
)
4548 /* If the existing symbol is generic from a different module and
4549 the new symbol is generic there can be no ambiguity. */
4550 if (st_sym
->attr
.generic
4552 && st_sym
->module
!= module_name
)
4554 /* The new symbol's attributes have not yet been read. Since
4555 we need attr.generic, read it directly. */
4556 get_module_locus (&locus
);
4557 set_module_locus (&info
->u
.rsym
.where
);
4560 mio_symbol_attribute (&attr
);
4561 set_module_locus (&locus
);
4570 /* Read a module file. */
4575 module_locus operator_interfaces
, user_operators
, extensions
;
4577 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
4579 int ambiguous
, j
, nuse
, symbol
;
4580 pointer_info
*info
, *q
;
4581 gfc_use_rename
*u
= NULL
;
4585 get_module_locus (&operator_interfaces
); /* Skip these for now. */
4588 get_module_locus (&user_operators
);
4592 /* Skip commons, equivalences and derived type extensions for now. */
4596 get_module_locus (&extensions
);
4601 /* Create the fixup nodes for all the symbols. */
4603 while (peek_atom () != ATOM_RPAREN
)
4606 require_atom (ATOM_INTEGER
);
4607 info
= get_integer (atom_int
);
4609 info
->type
= P_SYMBOL
;
4610 info
->u
.rsym
.state
= UNUSED
;
4612 info
->u
.rsym
.true_name
= read_string ();
4613 info
->u
.rsym
.module
= read_string ();
4614 bind_label
= read_string ();
4615 if (strlen (bind_label
))
4616 info
->u
.rsym
.binding_label
= bind_label
;
4618 XDELETEVEC (bind_label
);
4620 require_atom (ATOM_INTEGER
);
4621 info
->u
.rsym
.ns
= atom_int
;
4623 get_module_locus (&info
->u
.rsym
.where
);
4626 /* See if the symbol has already been loaded by a previous module.
4627 If so, we reference the existing symbol and prevent it from
4628 being loaded again. This should not happen if the symbol being
4629 read is an index for an assumed shape dummy array (ns != 1). */
4631 sym
= find_true_name (info
->u
.rsym
.true_name
, info
->u
.rsym
.module
);
4634 || (sym
->attr
.flavor
== FL_VARIABLE
&& info
->u
.rsym
.ns
!=1))
4637 info
->u
.rsym
.state
= USED
;
4638 info
->u
.rsym
.sym
= sym
;
4640 /* Some symbols do not have a namespace (eg. formal arguments),
4641 so the automatic "unique symtree" mechanism must be suppressed
4642 by marking them as referenced. */
4643 q
= get_integer (info
->u
.rsym
.ns
);
4644 if (q
->u
.pointer
== NULL
)
4646 info
->u
.rsym
.referenced
= 1;
4650 /* If possible recycle the symtree that references the symbol.
4651 If a symtree is not found and the module does not import one,
4652 a unique-name symtree is found by read_cleanup. */
4653 st
= find_symtree_for_symbol (gfc_current_ns
->sym_root
, sym
);
4656 info
->u
.rsym
.symtree
= st
;
4657 info
->u
.rsym
.referenced
= 1;
4663 /* Parse the symtree lists. This lets us mark which symbols need to
4664 be loaded. Renaming is also done at this point by replacing the
4669 while (peek_atom () != ATOM_RPAREN
)
4671 mio_internal_string (name
);
4672 mio_integer (&ambiguous
);
4673 mio_integer (&symbol
);
4675 info
= get_integer (symbol
);
4677 /* See how many use names there are. If none, go through the start
4678 of the loop at least once. */
4679 nuse
= number_use_names (name
, false);
4680 info
->u
.rsym
.renamed
= nuse
? 1 : 0;
4685 for (j
= 1; j
<= nuse
; j
++)
4687 /* Get the jth local name for this symbol. */
4688 p
= find_use_name_n (name
, &j
, false);
4690 if (p
== NULL
&& strcmp (name
, module_name
) == 0)
4693 /* Exception: Always import vtabs & vtypes. */
4694 if (p
== NULL
&& name
[0] == '_'
4695 && (strncmp (name
, "__vtab_", 5) == 0
4696 || strncmp (name
, "__vtype_", 6) == 0))
4699 /* Skip symtree nodes not in an ONLY clause, unless there
4700 is an existing symtree loaded from another USE statement. */
4703 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
4705 && strcmp (st
->n
.sym
->name
, info
->u
.rsym
.true_name
) == 0
4706 && st
->n
.sym
->module
!= NULL
4707 && strcmp (st
->n
.sym
->module
, info
->u
.rsym
.module
) == 0)
4709 info
->u
.rsym
.symtree
= st
;
4710 info
->u
.rsym
.sym
= st
->n
.sym
;
4715 /* If a symbol of the same name and module exists already,
4716 this symbol, which is not in an ONLY clause, must not be
4717 added to the namespace(11.3.2). Note that find_symbol
4718 only returns the first occurrence that it finds. */
4719 if (!only_flag
&& !info
->u
.rsym
.renamed
4720 && strcmp (name
, module_name
) != 0
4721 && find_symbol (gfc_current_ns
->sym_root
, name
,
4725 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, p
);
4729 /* Check for ambiguous symbols. */
4730 if (check_for_ambiguous (st
->n
.sym
, info
))
4733 info
->u
.rsym
.symtree
= st
;
4737 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
4739 /* Create a symtree node in the current namespace for this
4741 st
= check_unique_name (p
)
4742 ? gfc_get_unique_symtree (gfc_current_ns
)
4743 : gfc_new_symtree (&gfc_current_ns
->sym_root
, p
);
4744 st
->ambiguous
= ambiguous
;
4746 sym
= info
->u
.rsym
.sym
;
4748 /* Create a symbol node if it doesn't already exist. */
4751 info
->u
.rsym
.sym
= gfc_new_symbol (info
->u
.rsym
.true_name
,
4753 info
->u
.rsym
.sym
->name
= dt_lower_string (info
->u
.rsym
.true_name
);
4754 sym
= info
->u
.rsym
.sym
;
4755 sym
->module
= gfc_get_string (info
->u
.rsym
.module
);
4757 if (info
->u
.rsym
.binding_label
)
4758 sym
->binding_label
=
4759 IDENTIFIER_POINTER (get_identifier
4760 (info
->u
.rsym
.binding_label
));
4766 if (strcmp (name
, p
) != 0)
4767 sym
->attr
.use_rename
= 1;
4770 || (strncmp (name
, "__vtab_", 5) != 0
4771 && strncmp (name
, "__vtype_", 6) != 0))
4772 sym
->attr
.use_only
= only_flag
;
4774 /* Store the symtree pointing to this symbol. */
4775 info
->u
.rsym
.symtree
= st
;
4777 if (info
->u
.rsym
.state
== UNUSED
)
4778 info
->u
.rsym
.state
= NEEDED
;
4779 info
->u
.rsym
.referenced
= 1;
4786 /* Load intrinsic operator interfaces. */
4787 set_module_locus (&operator_interfaces
);
4790 for (i
= GFC_INTRINSIC_BEGIN
; i
!= GFC_INTRINSIC_END
; i
++)
4792 if (i
== INTRINSIC_USER
)
4797 u
= find_use_operator ((gfc_intrinsic_op
) i
);
4808 mio_interface (&gfc_current_ns
->op
[i
]);
4809 if (u
&& !gfc_current_ns
->op
[i
])
4815 /* Load generic and user operator interfaces. These must follow the
4816 loading of symtree because otherwise symbols can be marked as
4819 set_module_locus (&user_operators
);
4821 load_operator_interfaces ();
4822 load_generic_interfaces ();
4827 /* At this point, we read those symbols that are needed but haven't
4828 been loaded yet. If one symbol requires another, the other gets
4829 marked as NEEDED if its previous state was UNUSED. */
4831 while (load_needed (pi_root
));
4833 /* Make sure all elements of the rename-list were found in the module. */
4835 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4840 if (u
->op
== INTRINSIC_NONE
)
4842 gfc_error ("Symbol '%s' referenced at %L not found in module '%s'",
4843 u
->use_name
, &u
->where
, module_name
);
4847 if (u
->op
== INTRINSIC_USER
)
4849 gfc_error ("User operator '%s' referenced at %L not found "
4850 "in module '%s'", u
->use_name
, &u
->where
, module_name
);
4854 gfc_error ("Intrinsic operator '%s' referenced at %L not found "
4855 "in module '%s'", gfc_op2string (u
->op
), &u
->where
,
4859 /* Now we should be in a position to fill f2k_derived with derived type
4860 extensions, since everything has been loaded. */
4861 set_module_locus (&extensions
);
4862 load_derived_extensions ();
4864 /* Clean up symbol nodes that were never loaded, create references
4865 to hidden symbols. */
4867 read_cleanup (pi_root
);
4871 /* Given an access type that is specific to an entity and the default
4872 access, return nonzero if the entity is publicly accessible. If the
4873 element is declared as PUBLIC, then it is public; if declared
4874 PRIVATE, then private, and otherwise it is public unless the default
4875 access in this context has been declared PRIVATE. */
4878 check_access (gfc_access specific_access
, gfc_access default_access
)
4880 if (specific_access
== ACCESS_PUBLIC
)
4882 if (specific_access
== ACCESS_PRIVATE
)
4885 if (gfc_option
.flag_module_private
)
4886 return default_access
== ACCESS_PUBLIC
;
4888 return default_access
!= ACCESS_PRIVATE
;
4893 gfc_check_symbol_access (gfc_symbol
*sym
)
4895 if (sym
->attr
.vtab
|| sym
->attr
.vtype
)
4898 return check_access (sym
->attr
.access
, sym
->ns
->default_access
);
4902 /* A structure to remember which commons we've already written. */
4904 struct written_common
4906 BBT_HEADER(written_common
);
4907 const char *name
, *label
;
4910 static struct written_common
*written_commons
= NULL
;
4912 /* Comparison function used for balancing the binary tree. */
4915 compare_written_commons (void *a1
, void *b1
)
4917 const char *aname
= ((struct written_common
*) a1
)->name
;
4918 const char *alabel
= ((struct written_common
*) a1
)->label
;
4919 const char *bname
= ((struct written_common
*) b1
)->name
;
4920 const char *blabel
= ((struct written_common
*) b1
)->label
;
4921 int c
= strcmp (aname
, bname
);
4923 return (c
!= 0 ? c
: strcmp (alabel
, blabel
));
4926 /* Free a list of written commons. */
4929 free_written_common (struct written_common
*w
)
4935 free_written_common (w
->left
);
4937 free_written_common (w
->right
);
4942 /* Write a common block to the module -- recursive helper function. */
4945 write_common_0 (gfc_symtree
*st
, bool this_module
)
4951 struct written_common
*w
;
4952 bool write_me
= true;
4957 write_common_0 (st
->left
, this_module
);
4959 /* We will write out the binding label, or "" if no label given. */
4960 name
= st
->n
.common
->name
;
4962 label
= (p
->is_bind_c
&& p
->binding_label
) ? p
->binding_label
: "";
4964 /* Check if we've already output this common. */
4965 w
= written_commons
;
4968 int c
= strcmp (name
, w
->name
);
4969 c
= (c
!= 0 ? c
: strcmp (label
, w
->label
));
4973 w
= (c
< 0) ? w
->left
: w
->right
;
4976 if (this_module
&& p
->use_assoc
)
4981 /* Write the common to the module. */
4983 mio_pool_string (&name
);
4985 mio_symbol_ref (&p
->head
);
4986 flags
= p
->saved
? 1 : 0;
4987 if (p
->threadprivate
)
4989 mio_integer (&flags
);
4991 /* Write out whether the common block is bind(c) or not. */
4992 mio_integer (&(p
->is_bind_c
));
4994 mio_pool_string (&label
);
4997 /* Record that we have written this common. */
4998 w
= XCNEW (struct written_common
);
5001 gfc_insert_bbt (&written_commons
, w
, compare_written_commons
);
5004 write_common_0 (st
->right
, this_module
);
5008 /* Write a common, by initializing the list of written commons, calling
5009 the recursive function write_common_0() and cleaning up afterwards. */
5012 write_common (gfc_symtree
*st
)
5014 written_commons
= NULL
;
5015 write_common_0 (st
, true);
5016 write_common_0 (st
, false);
5017 free_written_common (written_commons
);
5018 written_commons
= NULL
;
5022 /* Write the blank common block to the module. */
5025 write_blank_common (void)
5027 const char * name
= BLANK_COMMON_NAME
;
5029 /* TODO: Blank commons are not bind(c). The F2003 standard probably says
5030 this, but it hasn't been checked. Just making it so for now. */
5033 if (gfc_current_ns
->blank_common
.head
== NULL
)
5038 mio_pool_string (&name
);
5040 mio_symbol_ref (&gfc_current_ns
->blank_common
.head
);
5041 saved
= gfc_current_ns
->blank_common
.saved
;
5042 mio_integer (&saved
);
5044 /* Write out whether the common block is bind(c) or not. */
5045 mio_integer (&is_bind_c
);
5047 /* Write out an empty binding label. */
5048 write_atom (ATOM_STRING
, "");
5054 /* Write equivalences to the module. */
5063 for (eq
= gfc_current_ns
->equiv
; eq
; eq
= eq
->next
)
5067 for (e
= eq
; e
; e
= e
->eq
)
5069 if (e
->module
== NULL
)
5070 e
->module
= gfc_get_string ("%s.eq.%d", module_name
, num
);
5071 mio_allocated_string (e
->module
);
5072 mio_expr (&e
->expr
);
5081 /* Write derived type extensions to the module. */
5084 write_dt_extensions (gfc_symtree
*st
)
5086 if (!gfc_check_symbol_access (st
->n
.sym
))
5088 if (!(st
->n
.sym
->ns
&& st
->n
.sym
->ns
->proc_name
5089 && st
->n
.sym
->ns
->proc_name
->attr
.flavor
== FL_MODULE
))
5093 mio_pool_string (&st
->name
);
5094 if (st
->n
.sym
->module
!= NULL
)
5095 mio_pool_string (&st
->n
.sym
->module
);
5098 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
5099 if (iomode
== IO_OUTPUT
)
5100 strcpy (name
, module_name
);
5101 mio_internal_string (name
);
5102 if (iomode
== IO_INPUT
)
5103 module_name
= gfc_get_string (name
);
5109 write_derived_extensions (gfc_symtree
*st
)
5111 if (!((st
->n
.sym
->attr
.flavor
== FL_DERIVED
)
5112 && (st
->n
.sym
->f2k_derived
!= NULL
)
5113 && (st
->n
.sym
->f2k_derived
->sym_root
!= NULL
)))
5117 mio_symbol_ref (&(st
->n
.sym
));
5118 gfc_traverse_symtree (st
->n
.sym
->f2k_derived
->sym_root
,
5119 write_dt_extensions
);
5124 /* Write a symbol to the module. */
5127 write_symbol (int n
, gfc_symbol
*sym
)
5131 if (sym
->attr
.flavor
== FL_UNKNOWN
|| sym
->attr
.flavor
== FL_LABEL
)
5132 gfc_internal_error ("write_symbol(): bad module symbol '%s'", sym
->name
);
5136 if (sym
->attr
.flavor
== FL_DERIVED
)
5139 name
= dt_upper_string (sym
->name
);
5140 mio_pool_string (&name
);
5143 mio_pool_string (&sym
->name
);
5145 mio_pool_string (&sym
->module
);
5146 if ((sym
->attr
.is_bind_c
|| sym
->attr
.is_iso_c
) && sym
->binding_label
)
5148 label
= sym
->binding_label
;
5149 mio_pool_string (&label
);
5152 write_atom (ATOM_STRING
, "");
5154 mio_pointer_ref (&sym
->ns
);
5161 /* Recursive traversal function to write the initial set of symbols to
5162 the module. We check to see if the symbol should be written
5163 according to the access specification. */
5166 write_symbol0 (gfc_symtree
*st
)
5170 bool dont_write
= false;
5175 write_symbol0 (st
->left
);
5178 if (sym
->module
== NULL
)
5179 sym
->module
= module_name
;
5181 if (sym
->attr
.flavor
== FL_PROCEDURE
&& sym
->attr
.generic
5182 && !sym
->attr
.subroutine
&& !sym
->attr
.function
)
5185 if (!gfc_check_symbol_access (sym
))
5190 p
= get_pointer (sym
);
5191 if (p
->type
== P_UNKNOWN
)
5194 if (p
->u
.wsym
.state
!= WRITTEN
)
5196 write_symbol (p
->integer
, sym
);
5197 p
->u
.wsym
.state
= WRITTEN
;
5201 write_symbol0 (st
->right
);
5205 /* Type for the temporary tree used when writing secondary symbols. */
5207 struct sorted_pointer_info
5209 BBT_HEADER (sorted_pointer_info
);
5214 #define gfc_get_sorted_pointer_info() XCNEW (sorted_pointer_info)
5216 /* Recursively traverse the temporary tree, free its contents. */
5219 free_sorted_pointer_info_tree (sorted_pointer_info
*p
)
5224 free_sorted_pointer_info_tree (p
->left
);
5225 free_sorted_pointer_info_tree (p
->right
);
5230 /* Comparison function for the temporary tree. */
5233 compare_sorted_pointer_info (void *_spi1
, void *_spi2
)
5235 sorted_pointer_info
*spi1
, *spi2
;
5236 spi1
= (sorted_pointer_info
*)_spi1
;
5237 spi2
= (sorted_pointer_info
*)_spi2
;
5239 if (spi1
->p
->integer
< spi2
->p
->integer
)
5241 if (spi1
->p
->integer
> spi2
->p
->integer
)
5247 /* Finds the symbols that need to be written and collects them in the
5248 sorted_pi tree so that they can be traversed in an order
5249 independent of memory addresses. */
5252 find_symbols_to_write(sorted_pointer_info
**tree
, pointer_info
*p
)
5257 if (p
->type
== P_SYMBOL
&& p
->u
.wsym
.state
== NEEDS_WRITE
)
5259 sorted_pointer_info
*sp
= gfc_get_sorted_pointer_info();
5262 gfc_insert_bbt (tree
, sp
, compare_sorted_pointer_info
);
5265 find_symbols_to_write (tree
, p
->left
);
5266 find_symbols_to_write (tree
, p
->right
);
5270 /* Recursive function that traverses the tree of symbols that need to be
5271 written and writes them in order. */
5274 write_symbol1_recursion (sorted_pointer_info
*sp
)
5279 write_symbol1_recursion (sp
->left
);
5281 pointer_info
*p1
= sp
->p
;
5282 gcc_assert (p1
->type
== P_SYMBOL
&& p1
->u
.wsym
.state
== NEEDS_WRITE
);
5284 p1
->u
.wsym
.state
= WRITTEN
;
5285 write_symbol (p1
->integer
, p1
->u
.wsym
.sym
);
5286 p1
->u
.wsym
.sym
->attr
.public_used
= 1;
5288 write_symbol1_recursion (sp
->right
);
5292 /* Write the secondary set of symbols to the module file. These are
5293 symbols that were not public yet are needed by the public symbols
5294 or another dependent symbol. The act of writing a symbol can add
5295 symbols to the pointer_info tree, so we return nonzero if a symbol
5296 was written and pass that information upwards. The caller will
5297 then call this function again until nothing was written. It uses
5298 the utility functions and a temporary tree to ensure a reproducible
5299 ordering of the symbol output and thus the module file. */
5302 write_symbol1 (pointer_info
*p
)
5307 /* Put symbols that need to be written into a tree sorted on the
5310 sorted_pointer_info
*spi_root
= NULL
;
5311 find_symbols_to_write (&spi_root
, p
);
5313 /* No symbols to write, return. */
5317 /* Otherwise, write and free the tree again. */
5318 write_symbol1_recursion (spi_root
);
5319 free_sorted_pointer_info_tree (spi_root
);
5325 /* Write operator interfaces associated with a symbol. */
5328 write_operator (gfc_user_op
*uop
)
5330 static char nullstring
[] = "";
5331 const char *p
= nullstring
;
5333 if (uop
->op
== NULL
|| !check_access (uop
->access
, uop
->ns
->default_access
))
5336 mio_symbol_interface (&uop
->name
, &p
, &uop
->op
);
5340 /* Write generic interfaces from the namespace sym_root. */
5343 write_generic (gfc_symtree
*st
)
5350 write_generic (st
->left
);
5353 if (sym
&& !check_unique_name (st
->name
)
5354 && sym
->generic
&& gfc_check_symbol_access (sym
))
5357 sym
->module
= module_name
;
5359 mio_symbol_interface (&st
->name
, &sym
->module
, &sym
->generic
);
5362 write_generic (st
->right
);
5367 write_symtree (gfc_symtree
*st
)
5374 /* A symbol in an interface body must not be visible in the
5376 if (sym
->ns
!= gfc_current_ns
5377 && sym
->ns
->proc_name
5378 && sym
->ns
->proc_name
->attr
.if_source
== IFSRC_IFBODY
)
5381 if (!gfc_check_symbol_access (sym
)
5382 || (sym
->attr
.flavor
== FL_PROCEDURE
&& sym
->attr
.generic
5383 && !sym
->attr
.subroutine
&& !sym
->attr
.function
))
5386 if (check_unique_name (st
->name
))
5389 p
= find_pointer (sym
);
5391 gfc_internal_error ("write_symtree(): Symbol not written");
5393 mio_pool_string (&st
->name
);
5394 mio_integer (&st
->ambiguous
);
5395 mio_integer (&p
->integer
);
5404 /* Write the operator interfaces. */
5407 for (i
= GFC_INTRINSIC_BEGIN
; i
!= GFC_INTRINSIC_END
; i
++)
5409 if (i
== INTRINSIC_USER
)
5412 mio_interface (check_access (gfc_current_ns
->operator_access
[i
],
5413 gfc_current_ns
->default_access
)
5414 ? &gfc_current_ns
->op
[i
] : NULL
);
5422 gfc_traverse_user_op (gfc_current_ns
, write_operator
);
5428 write_generic (gfc_current_ns
->sym_root
);
5434 write_blank_common ();
5435 write_common (gfc_current_ns
->common_root
);
5447 gfc_traverse_symtree (gfc_current_ns
->sym_root
,
5448 write_derived_extensions
);
5453 /* Write symbol information. First we traverse all symbols in the
5454 primary namespace, writing those that need to be written.
5455 Sometimes writing one symbol will cause another to need to be
5456 written. A list of these symbols ends up on the write stack, and
5457 we end by popping the bottom of the stack and writing the symbol
5458 until the stack is empty. */
5462 write_symbol0 (gfc_current_ns
->sym_root
);
5463 while (write_symbol1 (pi_root
))
5472 gfc_traverse_symtree (gfc_current_ns
->sym_root
, write_symtree
);
5477 /* Read a CRC32 sum from the gzip trailer of a module file. Returns
5478 true on success, false on failure. */
5481 read_crc32_from_module_file (const char* filename
, uLong
* crc
)
5487 /* Open the file in binary mode. */
5488 if ((file
= fopen (filename
, "rb")) == NULL
)
5491 /* The gzip crc32 value is found in the [END-8, END-4] bytes of the
5492 file. See RFC 1952. */
5493 if (fseek (file
, -8, SEEK_END
) != 0)
5499 /* Read the CRC32. */
5500 if (fread (buf
, 1, 4, file
) != 4)
5506 /* Close the file. */
5509 val
= (buf
[0] & 0xFF) + ((buf
[1] & 0xFF) << 8) + ((buf
[2] & 0xFF) << 16)
5510 + ((buf
[3] & 0xFF) << 24);
5513 /* For debugging, the CRC value printed in hexadecimal should match
5514 the CRC printed by "zcat -l -v filename".
5515 printf("CRC of file %s is %x\n", filename, val); */
5521 /* Given module, dump it to disk. If there was an error while
5522 processing the module, dump_flag will be set to zero and we delete
5523 the module file, even if it was already there. */
5526 gfc_dump_module (const char *name
, int dump_flag
)
5529 char *filename
, *filename_tmp
;
5532 n
= strlen (name
) + strlen (MODULE_EXTENSION
) + 1;
5533 if (gfc_option
.module_dir
!= NULL
)
5535 n
+= strlen (gfc_option
.module_dir
);
5536 filename
= (char *) alloca (n
);
5537 strcpy (filename
, gfc_option
.module_dir
);
5538 strcat (filename
, name
);
5542 filename
= (char *) alloca (n
);
5543 strcpy (filename
, name
);
5545 strcat (filename
, MODULE_EXTENSION
);
5547 /* Name of the temporary file used to write the module. */
5548 filename_tmp
= (char *) alloca (n
+ 1);
5549 strcpy (filename_tmp
, filename
);
5550 strcat (filename_tmp
, "0");
5552 /* There was an error while processing the module. We delete the
5553 module file, even if it was already there. */
5560 if (gfc_cpp_makedep ())
5561 gfc_cpp_add_target (filename
);
5563 /* Write the module to the temporary file. */
5564 module_fp
= gzopen (filename_tmp
, "w");
5565 if (module_fp
== NULL
)
5566 gfc_fatal_error ("Can't open module file '%s' for writing at %C: %s",
5567 filename_tmp
, xstrerror (errno
));
5569 gzprintf (module_fp
, "GFORTRAN module version '%s' created from %s\n",
5570 MOD_VERSION
, gfc_source_file
);
5572 /* Write the module itself. */
5574 module_name
= gfc_get_string (name
);
5580 free_pi_tree (pi_root
);
5585 if (gzclose (module_fp
))
5586 gfc_fatal_error ("Error writing module file '%s' for writing: %s",
5587 filename_tmp
, xstrerror (errno
));
5589 /* Read the CRC32 from the gzip trailers of the module files and
5591 if (!read_crc32_from_module_file (filename_tmp
, &crc
)
5592 || !read_crc32_from_module_file (filename
, &crc_old
)
5595 /* Module file have changed, replace the old one. */
5596 if (rename (filename_tmp
, filename
))
5597 gfc_fatal_error ("Can't rename module file '%s' to '%s': %s",
5598 filename_tmp
, filename
, xstrerror (errno
));
5602 if (unlink (filename_tmp
))
5603 gfc_fatal_error ("Can't delete temporary module file '%s': %s",
5604 filename_tmp
, xstrerror (errno
));
5610 create_intrinsic_function (const char *name
, int id
,
5611 const char *modname
, intmod_id module
,
5612 bool subroutine
, gfc_symbol
*result_type
)
5614 gfc_intrinsic_sym
*isym
;
5615 gfc_symtree
*tmp_symtree
;
5618 tmp_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
5621 if (strcmp (modname
, tmp_symtree
->n
.sym
->module
) == 0)
5623 gfc_error ("Symbol '%s' already declared", name
);
5626 gfc_get_sym_tree (name
, gfc_current_ns
, &tmp_symtree
, false);
5627 sym
= tmp_symtree
->n
.sym
;
5631 gfc_isym_id isym_id
= gfc_isym_id_by_intmod (module
, id
);
5632 isym
= gfc_intrinsic_subroutine_by_id (isym_id
);
5633 sym
->attr
.subroutine
= 1;
5637 gfc_isym_id isym_id
= gfc_isym_id_by_intmod (module
, id
);
5638 isym
= gfc_intrinsic_function_by_id (isym_id
);
5640 sym
->attr
.function
= 1;
5643 sym
->ts
.type
= BT_DERIVED
;
5644 sym
->ts
.u
.derived
= result_type
;
5645 sym
->ts
.is_c_interop
= 1;
5646 isym
->ts
.f90_type
= BT_VOID
;
5647 isym
->ts
.type
= BT_DERIVED
;
5648 isym
->ts
.f90_type
= BT_VOID
;
5649 isym
->ts
.u
.derived
= result_type
;
5650 isym
->ts
.is_c_interop
= 1;
5655 sym
->attr
.flavor
= FL_PROCEDURE
;
5656 sym
->attr
.intrinsic
= 1;
5658 sym
->module
= gfc_get_string (modname
);
5659 sym
->attr
.use_assoc
= 1;
5660 sym
->from_intmod
= module
;
5661 sym
->intmod_sym_id
= id
;
5665 /* Import the intrinsic ISO_C_BINDING module, generating symbols in
5666 the current namespace for all named constants, pointer types, and
5667 procedures in the module unless the only clause was used or a rename
5668 list was provided. */
5671 import_iso_c_binding_module (void)
5673 gfc_symbol
*mod_sym
= NULL
, *return_type
;
5674 gfc_symtree
*mod_symtree
= NULL
, *tmp_symtree
;
5675 gfc_symtree
*c_ptr
= NULL
, *c_funptr
= NULL
;
5676 const char *iso_c_module_name
= "__iso_c_binding";
5679 bool want_c_ptr
= false, want_c_funptr
= false;
5681 /* Look only in the current namespace. */
5682 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, iso_c_module_name
);
5684 if (mod_symtree
== NULL
)
5686 /* symtree doesn't already exist in current namespace. */
5687 gfc_get_sym_tree (iso_c_module_name
, gfc_current_ns
, &mod_symtree
,
5690 if (mod_symtree
!= NULL
)
5691 mod_sym
= mod_symtree
->n
.sym
;
5693 gfc_internal_error ("import_iso_c_binding_module(): Unable to "
5694 "create symbol for %s", iso_c_module_name
);
5696 mod_sym
->attr
.flavor
= FL_MODULE
;
5697 mod_sym
->attr
.intrinsic
= 1;
5698 mod_sym
->module
= gfc_get_string (iso_c_module_name
);
5699 mod_sym
->from_intmod
= INTMOD_ISO_C_BINDING
;
5702 /* Check whether C_PTR or C_FUNPTR are in the include list, if so, load it;
5703 check also whether C_NULL_(FUN)PTR or C_(FUN)LOC are requested, which
5705 for (u
= gfc_rename_list
; u
; u
= u
->next
)
5707 if (strcmp (c_interop_kinds_table
[ISOCBINDING_NULL_PTR
].name
,
5710 else if (strcmp (c_interop_kinds_table
[ISOCBINDING_LOC
].name
,
5713 else if (strcmp (c_interop_kinds_table
[ISOCBINDING_NULL_FUNPTR
].name
,
5715 want_c_funptr
= true;
5716 else if (strcmp (c_interop_kinds_table
[ISOCBINDING_FUNLOC
].name
,
5718 want_c_funptr
= true;
5719 else if (strcmp (c_interop_kinds_table
[ISOCBINDING_PTR
].name
,
5722 c_ptr
= generate_isocbinding_symbol (iso_c_module_name
,
5723 (iso_c_binding_symbol
)
5725 u
->local_name
[0] ? u
->local_name
5729 else if (strcmp (c_interop_kinds_table
[ISOCBINDING_FUNPTR
].name
,
5733 = generate_isocbinding_symbol (iso_c_module_name
,
5734 (iso_c_binding_symbol
)
5736 u
->local_name
[0] ? u
->local_name
5742 if ((want_c_ptr
|| !only_flag
) && !c_ptr
)
5743 c_ptr
= generate_isocbinding_symbol (iso_c_module_name
,
5744 (iso_c_binding_symbol
)
5746 NULL
, NULL
, only_flag
);
5747 if ((want_c_funptr
|| !only_flag
) && !c_funptr
)
5748 c_funptr
= generate_isocbinding_symbol (iso_c_module_name
,
5749 (iso_c_binding_symbol
)
5751 NULL
, NULL
, only_flag
);
5753 /* Generate the symbols for the named constants representing
5754 the kinds for intrinsic data types. */
5755 for (i
= 0; i
< ISOCBINDING_NUMBER
; i
++)
5758 for (u
= gfc_rename_list
; u
; u
= u
->next
)
5759 if (strcmp (c_interop_kinds_table
[i
].name
, u
->use_name
) == 0)
5768 #define NAMED_FUNCTION(a,b,c,d) \
5770 not_in_std = (gfc_option.allow_std & d) == 0; \
5773 #define NAMED_SUBROUTINE(a,b,c,d) \
5775 not_in_std = (gfc_option.allow_std & d) == 0; \
5778 #define NAMED_INTCST(a,b,c,d) \
5780 not_in_std = (gfc_option.allow_std & d) == 0; \
5783 #define NAMED_REALCST(a,b,c,d) \
5785 not_in_std = (gfc_option.allow_std & d) == 0; \
5788 #define NAMED_CMPXCST(a,b,c,d) \
5790 not_in_std = (gfc_option.allow_std & d) == 0; \
5793 #include "iso-c-binding.def"
5801 gfc_error ("The symbol '%s', referenced at %L, is not "
5802 "in the selected standard", name
, &u
->where
);
5808 #define NAMED_FUNCTION(a,b,c,d) \
5810 if (a == ISOCBINDING_LOC) \
5811 return_type = c_ptr->n.sym; \
5812 else if (a == ISOCBINDING_FUNLOC) \
5813 return_type = c_funptr->n.sym; \
5815 return_type = NULL; \
5816 create_intrinsic_function (u->local_name[0] \
5817 ? u->local_name : u->use_name, \
5818 a, iso_c_module_name, \
5819 INTMOD_ISO_C_BINDING, false, \
5822 #define NAMED_SUBROUTINE(a,b,c,d) \
5824 create_intrinsic_function (u->local_name[0] ? u->local_name \
5826 a, iso_c_module_name, \
5827 INTMOD_ISO_C_BINDING, true, NULL); \
5829 #include "iso-c-binding.def"
5831 case ISOCBINDING_PTR
:
5832 case ISOCBINDING_FUNPTR
:
5833 /* Already handled above. */
5836 if (i
== ISOCBINDING_NULL_PTR
)
5837 tmp_symtree
= c_ptr
;
5838 else if (i
== ISOCBINDING_NULL_FUNPTR
)
5839 tmp_symtree
= c_funptr
;
5842 generate_isocbinding_symbol (iso_c_module_name
,
5843 (iso_c_binding_symbol
) i
,
5845 ? u
->local_name
: u
->use_name
,
5846 tmp_symtree
, false);
5850 if (!found
&& !only_flag
)
5852 /* Skip, if the symbol is not in the enabled standard. */
5855 #define NAMED_FUNCTION(a,b,c,d) \
5857 if ((gfc_option.allow_std & d) == 0) \
5860 #define NAMED_SUBROUTINE(a,b,c,d) \
5862 if ((gfc_option.allow_std & d) == 0) \
5865 #define NAMED_INTCST(a,b,c,d) \
5867 if ((gfc_option.allow_std & d) == 0) \
5870 #define NAMED_REALCST(a,b,c,d) \
5872 if ((gfc_option.allow_std & d) == 0) \
5875 #define NAMED_CMPXCST(a,b,c,d) \
5877 if ((gfc_option.allow_std & d) == 0) \
5880 #include "iso-c-binding.def"
5882 ; /* Not GFC_STD_* versioned. */
5887 #define NAMED_FUNCTION(a,b,c,d) \
5889 if (a == ISOCBINDING_LOC) \
5890 return_type = c_ptr->n.sym; \
5891 else if (a == ISOCBINDING_FUNLOC) \
5892 return_type = c_funptr->n.sym; \
5894 return_type = NULL; \
5895 create_intrinsic_function (b, a, iso_c_module_name, \
5896 INTMOD_ISO_C_BINDING, false, \
5899 #define NAMED_SUBROUTINE(a,b,c,d) \
5901 create_intrinsic_function (b, a, iso_c_module_name, \
5902 INTMOD_ISO_C_BINDING, true, NULL); \
5904 #include "iso-c-binding.def"
5906 case ISOCBINDING_PTR
:
5907 case ISOCBINDING_FUNPTR
:
5908 /* Already handled above. */
5911 if (i
== ISOCBINDING_NULL_PTR
)
5912 tmp_symtree
= c_ptr
;
5913 else if (i
== ISOCBINDING_NULL_FUNPTR
)
5914 tmp_symtree
= c_funptr
;
5917 generate_isocbinding_symbol (iso_c_module_name
,
5918 (iso_c_binding_symbol
) i
, NULL
,
5919 tmp_symtree
, false);
5924 for (u
= gfc_rename_list
; u
; u
= u
->next
)
5929 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
5930 "module ISO_C_BINDING", u
->use_name
, &u
->where
);
5935 /* Add an integer named constant from a given module. */
5938 create_int_parameter (const char *name
, int value
, const char *modname
,
5939 intmod_id module
, int id
)
5941 gfc_symtree
*tmp_symtree
;
5944 tmp_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
5945 if (tmp_symtree
!= NULL
)
5947 if (strcmp (modname
, tmp_symtree
->n
.sym
->module
) == 0)
5950 gfc_error ("Symbol '%s' already declared", name
);
5953 gfc_get_sym_tree (name
, gfc_current_ns
, &tmp_symtree
, false);
5954 sym
= tmp_symtree
->n
.sym
;
5956 sym
->module
= gfc_get_string (modname
);
5957 sym
->attr
.flavor
= FL_PARAMETER
;
5958 sym
->ts
.type
= BT_INTEGER
;
5959 sym
->ts
.kind
= gfc_default_integer_kind
;
5960 sym
->value
= gfc_get_int_expr (gfc_default_integer_kind
, NULL
, value
);
5961 sym
->attr
.use_assoc
= 1;
5962 sym
->from_intmod
= module
;
5963 sym
->intmod_sym_id
= id
;
5967 /* Value is already contained by the array constructor, but not
5971 create_int_parameter_array (const char *name
, int size
, gfc_expr
*value
,
5972 const char *modname
, intmod_id module
, int id
)
5974 gfc_symtree
*tmp_symtree
;
5977 tmp_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
5978 if (tmp_symtree
!= NULL
)
5980 if (strcmp (modname
, tmp_symtree
->n
.sym
->module
) == 0)
5983 gfc_error ("Symbol '%s' already declared", name
);
5986 gfc_get_sym_tree (name
, gfc_current_ns
, &tmp_symtree
, false);
5987 sym
= tmp_symtree
->n
.sym
;
5989 sym
->module
= gfc_get_string (modname
);
5990 sym
->attr
.flavor
= FL_PARAMETER
;
5991 sym
->ts
.type
= BT_INTEGER
;
5992 sym
->ts
.kind
= gfc_default_integer_kind
;
5993 sym
->attr
.use_assoc
= 1;
5994 sym
->from_intmod
= module
;
5995 sym
->intmod_sym_id
= id
;
5996 sym
->attr
.dimension
= 1;
5997 sym
->as
= gfc_get_array_spec ();
5999 sym
->as
->type
= AS_EXPLICIT
;
6000 sym
->as
->lower
[0] = gfc_get_int_expr (gfc_default_integer_kind
, NULL
, 1);
6001 sym
->as
->upper
[0] = gfc_get_int_expr (gfc_default_integer_kind
, NULL
, size
);
6004 sym
->value
->shape
= gfc_get_shape (1);
6005 mpz_init_set_ui (sym
->value
->shape
[0], size
);
6009 /* Add an derived type for a given module. */
6012 create_derived_type (const char *name
, const char *modname
,
6013 intmod_id module
, int id
)
6015 gfc_symtree
*tmp_symtree
;
6016 gfc_symbol
*sym
, *dt_sym
;
6017 gfc_interface
*intr
, *head
;
6019 tmp_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
6020 if (tmp_symtree
!= NULL
)
6022 if (strcmp (modname
, tmp_symtree
->n
.sym
->module
) == 0)
6025 gfc_error ("Symbol '%s' already declared", name
);
6028 gfc_get_sym_tree (name
, gfc_current_ns
, &tmp_symtree
, false);
6029 sym
= tmp_symtree
->n
.sym
;
6030 sym
->module
= gfc_get_string (modname
);
6031 sym
->from_intmod
= module
;
6032 sym
->intmod_sym_id
= id
;
6033 sym
->attr
.flavor
= FL_PROCEDURE
;
6034 sym
->attr
.function
= 1;
6035 sym
->attr
.generic
= 1;
6037 gfc_get_sym_tree (dt_upper_string (sym
->name
),
6038 gfc_current_ns
, &tmp_symtree
, false);
6039 dt_sym
= tmp_symtree
->n
.sym
;
6040 dt_sym
->name
= gfc_get_string (sym
->name
);
6041 dt_sym
->attr
.flavor
= FL_DERIVED
;
6042 dt_sym
->attr
.private_comp
= 1;
6043 dt_sym
->attr
.zero_comp
= 1;
6044 dt_sym
->attr
.use_assoc
= 1;
6045 dt_sym
->module
= gfc_get_string (modname
);
6046 dt_sym
->from_intmod
= module
;
6047 dt_sym
->intmod_sym_id
= id
;
6049 head
= sym
->generic
;
6050 intr
= gfc_get_interface ();
6052 intr
->where
= gfc_current_locus
;
6054 sym
->generic
= intr
;
6055 sym
->attr
.if_source
= IFSRC_DECL
;
6059 /* Read the contents of the module file into a temporary buffer. */
6062 read_module_to_tmpbuf ()
6064 /* We don't know the uncompressed size, so enlarge the buffer as
6070 module_content
= XNEWVEC (char, cursz
);
6074 int nread
= gzread (module_fp
, module_content
+ len
, rsize
);
6079 module_content
= XRESIZEVEC (char, module_content
, cursz
);
6080 rsize
= cursz
- len
;
6083 module_content
= XRESIZEVEC (char, module_content
, len
+ 1);
6084 module_content
[len
] = '\0';
6090 /* USE the ISO_FORTRAN_ENV intrinsic module. */
6093 use_iso_fortran_env_module (void)
6095 static char mod
[] = "iso_fortran_env";
6097 gfc_symbol
*mod_sym
;
6098 gfc_symtree
*mod_symtree
;
6102 intmod_sym symbol
[] = {
6103 #define NAMED_INTCST(a,b,c,d) { a, b, 0, d },
6104 #define NAMED_KINDARRAY(a,b,c,d) { a, b, 0, d },
6105 #define NAMED_DERIVED_TYPE(a,b,c,d) { a, b, 0, d },
6106 #define NAMED_FUNCTION(a,b,c,d) { a, b, c, d },
6107 #define NAMED_SUBROUTINE(a,b,c,d) { a, b, c, d },
6108 #include "iso-fortran-env.def"
6109 { ISOFORTRANENV_INVALID
, NULL
, -1234, 0 } };
6112 #define NAMED_INTCST(a,b,c,d) symbol[i++].value = c;
6113 #include "iso-fortran-env.def"
6115 /* Generate the symbol for the module itself. */
6116 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, mod
);
6117 if (mod_symtree
== NULL
)
6119 gfc_get_sym_tree (mod
, gfc_current_ns
, &mod_symtree
, false);
6120 gcc_assert (mod_symtree
);
6121 mod_sym
= mod_symtree
->n
.sym
;
6123 mod_sym
->attr
.flavor
= FL_MODULE
;
6124 mod_sym
->attr
.intrinsic
= 1;
6125 mod_sym
->module
= gfc_get_string (mod
);
6126 mod_sym
->from_intmod
= INTMOD_ISO_FORTRAN_ENV
;
6129 if (!mod_symtree
->n
.sym
->attr
.intrinsic
)
6130 gfc_error ("Use of intrinsic module '%s' at %C conflicts with "
6131 "non-intrinsic module name used previously", mod
);
6133 /* Generate the symbols for the module integer named constants. */
6135 for (i
= 0; symbol
[i
].name
; i
++)
6138 for (u
= gfc_rename_list
; u
; u
= u
->next
)
6140 if (strcmp (symbol
[i
].name
, u
->use_name
) == 0)
6145 if (!gfc_notify_std (symbol
[i
].standard
, "The symbol '%s', "
6146 "referenced at %L, is not in the selected "
6147 "standard", symbol
[i
].name
, &u
->where
))
6150 if ((gfc_option
.flag_default_integer
|| gfc_option
.flag_default_real
)
6151 && symbol
[i
].id
== ISOFORTRANENV_NUMERIC_STORAGE_SIZE
)
6152 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named "
6153 "constant from intrinsic module "
6154 "ISO_FORTRAN_ENV at %L is incompatible with "
6155 "option %s", &u
->where
,
6156 gfc_option
.flag_default_integer
6157 ? "-fdefault-integer-8"
6158 : "-fdefault-real-8");
6159 switch (symbol
[i
].id
)
6161 #define NAMED_INTCST(a,b,c,d) \
6163 #include "iso-fortran-env.def"
6164 create_int_parameter (u
->local_name
[0] ? u
->local_name
6166 symbol
[i
].value
, mod
,
6167 INTMOD_ISO_FORTRAN_ENV
, symbol
[i
].id
);
6170 #define NAMED_KINDARRAY(a,b,KINDS,d) \
6172 expr = gfc_get_array_expr (BT_INTEGER, \
6173 gfc_default_integer_kind,\
6175 for (j = 0; KINDS[j].kind != 0; j++) \
6176 gfc_constructor_append_expr (&expr->value.constructor, \
6177 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
6178 KINDS[j].kind), NULL); \
6179 create_int_parameter_array (u->local_name[0] ? u->local_name \
6182 INTMOD_ISO_FORTRAN_ENV, \
6185 #include "iso-fortran-env.def"
6187 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
6189 #include "iso-fortran-env.def"
6190 create_derived_type (u
->local_name
[0] ? u
->local_name
6192 mod
, INTMOD_ISO_FORTRAN_ENV
,
6196 #define NAMED_FUNCTION(a,b,c,d) \
6198 #include "iso-fortran-env.def"
6199 create_intrinsic_function (u
->local_name
[0] ? u
->local_name
6202 INTMOD_ISO_FORTRAN_ENV
, false,
6212 if (!found
&& !only_flag
)
6214 if ((gfc_option
.allow_std
& symbol
[i
].standard
) == 0)
6217 if ((gfc_option
.flag_default_integer
|| gfc_option
.flag_default_real
)
6218 && symbol
[i
].id
== ISOFORTRANENV_NUMERIC_STORAGE_SIZE
)
6219 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named constant "
6220 "from intrinsic module ISO_FORTRAN_ENV at %C is "
6221 "incompatible with option %s",
6222 gfc_option
.flag_default_integer
6223 ? "-fdefault-integer-8" : "-fdefault-real-8");
6225 switch (symbol
[i
].id
)
6227 #define NAMED_INTCST(a,b,c,d) \
6229 #include "iso-fortran-env.def"
6230 create_int_parameter (symbol
[i
].name
, symbol
[i
].value
, mod
,
6231 INTMOD_ISO_FORTRAN_ENV
, symbol
[i
].id
);
6234 #define NAMED_KINDARRAY(a,b,KINDS,d) \
6236 expr = gfc_get_array_expr (BT_INTEGER, gfc_default_integer_kind, \
6238 for (j = 0; KINDS[j].kind != 0; j++) \
6239 gfc_constructor_append_expr (&expr->value.constructor, \
6240 gfc_get_int_expr (gfc_default_integer_kind, NULL, \
6241 KINDS[j].kind), NULL); \
6242 create_int_parameter_array (symbol[i].name, j, expr, mod, \
6243 INTMOD_ISO_FORTRAN_ENV, symbol[i].id);\
6245 #include "iso-fortran-env.def"
6247 #define NAMED_DERIVED_TYPE(a,b,TYPE,STD) \
6249 #include "iso-fortran-env.def"
6250 create_derived_type (symbol
[i
].name
, mod
, INTMOD_ISO_FORTRAN_ENV
,
6254 #define NAMED_FUNCTION(a,b,c,d) \
6256 #include "iso-fortran-env.def"
6257 create_intrinsic_function (symbol
[i
].name
, symbol
[i
].id
, mod
,
6258 INTMOD_ISO_FORTRAN_ENV
, false,
6268 for (u
= gfc_rename_list
; u
; u
= u
->next
)
6273 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
6274 "module ISO_FORTRAN_ENV", u
->use_name
, &u
->where
);
6279 /* Process a USE directive. */
6282 gfc_use_module (gfc_use_list
*module
)
6287 gfc_symtree
*mod_symtree
;
6288 gfc_use_list
*use_stmt
;
6289 locus old_locus
= gfc_current_locus
;
6291 gfc_current_locus
= module
->where
;
6292 module_name
= module
->module_name
;
6293 gfc_rename_list
= module
->rename
;
6294 only_flag
= module
->only_flag
;
6296 filename
= XALLOCAVEC (char, strlen (module_name
) + strlen (MODULE_EXTENSION
)
6298 strcpy (filename
, module_name
);
6299 strcat (filename
, MODULE_EXTENSION
);
6301 /* First, try to find an non-intrinsic module, unless the USE statement
6302 specified that the module is intrinsic. */
6304 if (!module
->intrinsic
)
6305 module_fp
= gzopen_included_file (filename
, true, true);
6307 /* Then, see if it's an intrinsic one, unless the USE statement
6308 specified that the module is non-intrinsic. */
6309 if (module_fp
== NULL
&& !module
->non_intrinsic
)
6311 if (strcmp (module_name
, "iso_fortran_env") == 0
6312 && gfc_notify_std (GFC_STD_F2003
, "ISO_FORTRAN_ENV "
6313 "intrinsic module at %C"))
6315 use_iso_fortran_env_module ();
6316 free_rename (module
->rename
);
6317 module
->rename
= NULL
;
6318 gfc_current_locus
= old_locus
;
6319 module
->intrinsic
= true;
6323 if (strcmp (module_name
, "iso_c_binding") == 0
6324 && gfc_notify_std (GFC_STD_F2003
, "ISO_C_BINDING module at %C"))
6326 import_iso_c_binding_module();
6327 free_rename (module
->rename
);
6328 module
->rename
= NULL
;
6329 gfc_current_locus
= old_locus
;
6330 module
->intrinsic
= true;
6334 module_fp
= gzopen_intrinsic_module (filename
);
6336 if (module_fp
== NULL
&& module
->intrinsic
)
6337 gfc_fatal_error ("Can't find an intrinsic module named '%s' at %C",
6341 if (module_fp
== NULL
)
6342 gfc_fatal_error ("Can't open module file '%s' for reading at %C: %s",
6343 filename
, xstrerror (errno
));
6345 /* Check that we haven't already USEd an intrinsic module with the
6348 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, module_name
);
6349 if (mod_symtree
&& mod_symtree
->n
.sym
->attr
.intrinsic
)
6350 gfc_error ("Use of non-intrinsic module '%s' at %C conflicts with "
6351 "intrinsic module name used previously", module_name
);
6358 read_module_to_tmpbuf ();
6359 gzclose (module_fp
);
6361 /* Skip the first line of the module, after checking that this is
6362 a gfortran module file. */
6368 bad_module ("Unexpected end of module");
6371 if ((start
== 1 && strcmp (atom_name
, "GFORTRAN") != 0)
6372 || (start
== 2 && strcmp (atom_name
, " module") != 0))
6373 gfc_fatal_error ("File '%s' opened at %C is not a GNU Fortran"
6374 " module file", filename
);
6377 if (strcmp (atom_name
, " version") != 0
6378 || module_char () != ' '
6379 || parse_atom () != ATOM_STRING
6380 || strcmp (atom_string
, MOD_VERSION
))
6381 gfc_fatal_error ("Cannot read module file '%s' opened at %C,"
6382 " because it was created by a different"
6383 " version of GNU Fortran", filename
);
6392 /* Make sure we're not reading the same module that we may be building. */
6393 for (p
= gfc_state_stack
; p
; p
= p
->previous
)
6394 if (p
->state
== COMP_MODULE
&& strcmp (p
->sym
->name
, module_name
) == 0)
6395 gfc_fatal_error ("Can't USE the same module we're building!");
6398 init_true_name_tree ();
6402 free_true_name (true_name_root
);
6403 true_name_root
= NULL
;
6405 free_pi_tree (pi_root
);
6408 XDELETEVEC (module_content
);
6409 module_content
= NULL
;
6411 use_stmt
= gfc_get_use_list ();
6412 *use_stmt
= *module
;
6413 use_stmt
->next
= gfc_current_ns
->use_stmts
;
6414 gfc_current_ns
->use_stmts
= use_stmt
;
6416 gfc_current_locus
= old_locus
;
6420 /* Remove duplicated intrinsic operators from the rename list. */
6423 rename_list_remove_duplicate (gfc_use_rename
*list
)
6425 gfc_use_rename
*seek
, *last
;
6427 for (; list
; list
= list
->next
)
6428 if (list
->op
!= INTRINSIC_USER
&& list
->op
!= INTRINSIC_NONE
)
6431 for (seek
= list
->next
; seek
; seek
= last
->next
)
6433 if (list
->op
== seek
->op
)
6435 last
->next
= seek
->next
;
6445 /* Process all USE directives. */
6448 gfc_use_modules (void)
6450 gfc_use_list
*next
, *seek
, *last
;
6452 for (next
= module_list
; next
; next
= next
->next
)
6454 bool non_intrinsic
= next
->non_intrinsic
;
6455 bool intrinsic
= next
->intrinsic
;
6456 bool neither
= !non_intrinsic
&& !intrinsic
;
6458 for (seek
= next
->next
; seek
; seek
= seek
->next
)
6460 if (next
->module_name
!= seek
->module_name
)
6463 if (seek
->non_intrinsic
)
6464 non_intrinsic
= true;
6465 else if (seek
->intrinsic
)
6471 if (intrinsic
&& neither
&& !non_intrinsic
)
6476 filename
= XALLOCAVEC (char,
6477 strlen (next
->module_name
)
6478 + strlen (MODULE_EXTENSION
) + 1);
6479 strcpy (filename
, next
->module_name
);
6480 strcat (filename
, MODULE_EXTENSION
);
6481 fp
= gfc_open_included_file (filename
, true, true);
6484 non_intrinsic
= true;
6490 for (seek
= next
->next
; seek
; seek
= last
->next
)
6492 if (next
->module_name
!= seek
->module_name
)
6498 if ((!next
->intrinsic
&& !seek
->intrinsic
)
6499 || (next
->intrinsic
&& seek
->intrinsic
)
6502 if (!seek
->only_flag
)
6503 next
->only_flag
= false;
6506 gfc_use_rename
*r
= seek
->rename
;
6509 r
->next
= next
->rename
;
6510 next
->rename
= seek
->rename
;
6512 last
->next
= seek
->next
;
6520 for (; module_list
; module_list
= next
)
6522 next
= module_list
->next
;
6523 rename_list_remove_duplicate (module_list
->rename
);
6524 gfc_use_module (module_list
);
6527 gfc_rename_list
= NULL
;
6532 gfc_free_use_stmts (gfc_use_list
*use_stmts
)
6535 for (; use_stmts
; use_stmts
= next
)
6537 gfc_use_rename
*next_rename
;
6539 for (; use_stmts
->rename
; use_stmts
->rename
= next_rename
)
6541 next_rename
= use_stmts
->rename
->next
;
6542 free (use_stmts
->rename
);
6544 next
= use_stmts
->next
;
6551 gfc_module_init_2 (void)
6553 last_atom
= ATOM_LPAREN
;
6554 gfc_rename_list
= NULL
;
6560 gfc_module_done_2 (void)
6562 free_rename (gfc_rename_list
);
6563 gfc_rename_list
= NULL
;