1 /* Handle modules, which amounts to loading and saving symbols and
2 their attendant structures.
3 Copyright (C) 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008
4 Free Software Foundation, Inc.
5 Contributed by Andy Vaught
7 This file is part of GCC.
9 GCC is free software; you can redistribute it and/or modify it under
10 the terms of the GNU General Public License as published by the Free
11 Software Foundation; either version 3, or (at your option) any later
14 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
15 WARRANTY; without even the implied warranty of MERCHANTABILITY or
16 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
19 You should have received a copy of the GNU General Public License
20 along with GCC; see the file COPYING3. If not see
21 <http://www.gnu.org/licenses/>. */
23 /* The syntax of gfortran modules resembles that of lisp lists, i.e. a
24 sequence of atoms, which can be left or right parenthesis, names,
25 integers or strings. Parenthesis are always matched which allows
26 us to skip over sections at high speed without having to know
27 anything about the internal structure of the lists. A "name" is
28 usually a fortran 95 identifier, but can also start with '@' in
29 order to reference a hidden symbol.
31 The first line of a module is an informational message about what
32 created the module, the file it came from and when it was created.
33 The second line is a warning for people not to edit the module.
34 The rest of the module looks like:
36 ( ( <Interface info for UPLUS> )
37 ( <Interface info for UMINUS> )
40 ( ( <name of operator interface> <module of op interface> <i/f1> ... )
43 ( ( <name of generic interface> <module of generic interface> <i/f1> ... )
46 ( ( <common name> <symbol> <saved flag>)
52 ( <Symbol Number (in no particular order)>
54 <Module name of symbol>
55 ( <symbol information> )
64 In general, symbols refer to other symbols by their symbol number,
65 which are zero based. Symbols are written to the module in no
73 #include "parse.h" /* FIXME */
76 #define MODULE_EXTENSION ".mod"
79 /* Structure that describes a position within a module file. */
88 /* Structure for list of symbols of intrinsic modules. */
101 P_UNKNOWN
= 0, P_OTHER
, P_NAMESPACE
, P_COMPONENT
, P_SYMBOL
105 /* The fixup structure lists pointers to pointers that have to
106 be updated when a pointer value becomes known. */
108 typedef struct fixup_t
111 struct fixup_t
*next
;
116 /* Structure for holding extra info needed for pointers being read. */
118 typedef struct pointer_info
120 BBT_HEADER (pointer_info
);
124 /* The first component of each member of the union is the pointer
131 void *pointer
; /* Member for doing pointer searches. */
136 char true_name
[GFC_MAX_SYMBOL_LEN
+ 1], module
[GFC_MAX_SYMBOL_LEN
+ 1];
138 { UNUSED
, NEEDED
, USED
}
140 int ns
, referenced
, renamed
;
143 gfc_symtree
*symtree
;
144 char binding_label
[GFC_MAX_SYMBOL_LEN
+ 1];
152 { UNREFERENCED
= 0, NEEDS_WRITE
, WRITTEN
}
162 #define gfc_get_pointer_info() XCNEW (pointer_info)
165 /* Lists of rename info for the USE statement. */
167 typedef struct gfc_use_rename
169 char local_name
[GFC_MAX_SYMBOL_LEN
+ 1], use_name
[GFC_MAX_SYMBOL_LEN
+ 1];
170 struct gfc_use_rename
*next
;
177 #define gfc_get_use_rename() XCNEW (gfc_use_rename);
179 /* Local variables */
181 /* The FILE for the module we're reading or writing. */
182 static FILE *module_fp
;
184 /* MD5 context structure. */
185 static struct md5_ctx ctx
;
187 /* The name of the module we're reading (USE'ing) or writing. */
188 static char module_name
[GFC_MAX_SYMBOL_LEN
+ 1];
190 /* The way the module we're reading was specified. */
191 static bool specified_nonint
, specified_int
;
193 static int module_line
, module_column
, only_flag
;
195 { IO_INPUT
, IO_OUTPUT
}
198 static gfc_use_rename
*gfc_rename_list
;
199 static pointer_info
*pi_root
;
200 static int symbol_number
; /* Counter for assigning symbol numbers */
202 /* Tells mio_expr_ref to make symbols for unused equivalence members. */
203 static bool in_load_equiv
;
207 /*****************************************************************/
209 /* Pointer/integer conversion. Pointers between structures are stored
210 as integers in the module file. The next couple of subroutines
211 handle this translation for reading and writing. */
213 /* Recursively free the tree of pointer structures. */
216 free_pi_tree (pointer_info
*p
)
221 if (p
->fixup
!= NULL
)
222 gfc_internal_error ("free_pi_tree(): Unresolved fixup");
224 free_pi_tree (p
->left
);
225 free_pi_tree (p
->right
);
231 /* Compare pointers when searching by pointer. Used when writing a
235 compare_pointers (void *_sn1
, void *_sn2
)
237 pointer_info
*sn1
, *sn2
;
239 sn1
= (pointer_info
*) _sn1
;
240 sn2
= (pointer_info
*) _sn2
;
242 if (sn1
->u
.pointer
< sn2
->u
.pointer
)
244 if (sn1
->u
.pointer
> sn2
->u
.pointer
)
251 /* Compare integers when searching by integer. Used when reading a
255 compare_integers (void *_sn1
, void *_sn2
)
257 pointer_info
*sn1
, *sn2
;
259 sn1
= (pointer_info
*) _sn1
;
260 sn2
= (pointer_info
*) _sn2
;
262 if (sn1
->integer
< sn2
->integer
)
264 if (sn1
->integer
> sn2
->integer
)
271 /* Initialize the pointer_info tree. */
280 compare
= (iomode
== IO_INPUT
) ? compare_integers
: compare_pointers
;
282 /* Pointer 0 is the NULL pointer. */
283 p
= gfc_get_pointer_info ();
288 gfc_insert_bbt (&pi_root
, p
, compare
);
290 /* Pointer 1 is the current namespace. */
291 p
= gfc_get_pointer_info ();
292 p
->u
.pointer
= gfc_current_ns
;
294 p
->type
= P_NAMESPACE
;
296 gfc_insert_bbt (&pi_root
, p
, compare
);
302 /* During module writing, call here with a pointer to something,
303 returning the pointer_info node. */
305 static pointer_info
*
306 find_pointer (void *gp
)
313 if (p
->u
.pointer
== gp
)
315 p
= (gp
< p
->u
.pointer
) ? p
->left
: p
->right
;
322 /* Given a pointer while writing, returns the pointer_info tree node,
323 creating it if it doesn't exist. */
325 static pointer_info
*
326 get_pointer (void *gp
)
330 p
= find_pointer (gp
);
334 /* Pointer doesn't have an integer. Give it one. */
335 p
= gfc_get_pointer_info ();
338 p
->integer
= symbol_number
++;
340 gfc_insert_bbt (&pi_root
, p
, compare_pointers
);
346 /* Given an integer during reading, find it in the pointer_info tree,
347 creating the node if not found. */
349 static pointer_info
*
350 get_integer (int integer
)
360 c
= compare_integers (&t
, p
);
364 p
= (c
< 0) ? p
->left
: p
->right
;
370 p
= gfc_get_pointer_info ();
371 p
->integer
= integer
;
374 gfc_insert_bbt (&pi_root
, p
, compare_integers
);
380 /* Recursive function to find a pointer within a tree by brute force. */
382 static pointer_info
*
383 fp2 (pointer_info
*p
, const void *target
)
390 if (p
->u
.pointer
== target
)
393 q
= fp2 (p
->left
, target
);
397 return fp2 (p
->right
, target
);
401 /* During reading, find a pointer_info node from the pointer value.
402 This amounts to a brute-force search. */
404 static pointer_info
*
405 find_pointer2 (void *p
)
407 return fp2 (pi_root
, p
);
411 /* Resolve any fixups using a known pointer. */
414 resolve_fixups (fixup_t
*f
, void *gp
)
427 /* Call here during module reading when we know what pointer to
428 associate with an integer. Any fixups that exist are resolved at
432 associate_integer_pointer (pointer_info
*p
, void *gp
)
434 if (p
->u
.pointer
!= NULL
)
435 gfc_internal_error ("associate_integer_pointer(): Already associated");
439 resolve_fixups (p
->fixup
, gp
);
445 /* During module reading, given an integer and a pointer to a pointer,
446 either store the pointer from an already-known value or create a
447 fixup structure in order to store things later. Returns zero if
448 the reference has been actually stored, or nonzero if the reference
449 must be fixed later (i.e., associate_integer_pointer must be called
450 sometime later. Returns the pointer_info structure. */
452 static pointer_info
*
453 add_fixup (int integer
, void *gp
)
459 p
= get_integer (integer
);
461 if (p
->integer
== 0 || p
->u
.pointer
!= NULL
)
464 *cp
= (char *) p
->u
.pointer
;
473 f
->pointer
= (void **) gp
;
480 /*****************************************************************/
482 /* Parser related subroutines */
484 /* Free the rename list left behind by a USE statement. */
489 gfc_use_rename
*next
;
491 for (; gfc_rename_list
; gfc_rename_list
= next
)
493 next
= gfc_rename_list
->next
;
494 gfc_free (gfc_rename_list
);
499 /* Match a USE statement. */
504 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module_nature
[GFC_MAX_SYMBOL_LEN
+ 1];
505 gfc_use_rename
*tail
= NULL
, *new_use
;
506 interface_type type
, type2
;
510 specified_int
= false;
511 specified_nonint
= false;
513 if (gfc_match (" , ") == MATCH_YES
)
515 if ((m
= gfc_match (" %n ::", module_nature
)) == MATCH_YES
)
517 if (gfc_notify_std (GFC_STD_F2003
, "Fortran 2003: module "
518 "nature in USE statement at %C") == FAILURE
)
521 if (strcmp (module_nature
, "intrinsic") == 0)
522 specified_int
= true;
525 if (strcmp (module_nature
, "non_intrinsic") == 0)
526 specified_nonint
= true;
529 gfc_error ("Module nature in USE statement at %C shall "
530 "be either INTRINSIC or NON_INTRINSIC");
537 /* Help output a better error message than "Unclassifiable
539 gfc_match (" %n", module_nature
);
540 if (strcmp (module_nature
, "intrinsic") == 0
541 || strcmp (module_nature
, "non_intrinsic") == 0)
542 gfc_error ("\"::\" was expected after module nature at %C "
543 "but was not found");
549 m
= gfc_match (" ::");
550 if (m
== MATCH_YES
&&
551 gfc_notify_std (GFC_STD_F2003
, "Fortran 2003: "
552 "\"USE :: module\" at %C") == FAILURE
)
557 m
= gfc_match ("% ");
563 m
= gfc_match_name (module_name
);
570 if (gfc_match_eos () == MATCH_YES
)
572 if (gfc_match_char (',') != MATCH_YES
)
575 if (gfc_match (" only :") == MATCH_YES
)
578 if (gfc_match_eos () == MATCH_YES
)
583 /* Get a new rename struct and add it to the rename list. */
584 new_use
= gfc_get_use_rename ();
585 new_use
->where
= gfc_current_locus
;
588 if (gfc_rename_list
== NULL
)
589 gfc_rename_list
= new_use
;
591 tail
->next
= new_use
;
594 /* See what kind of interface we're dealing with. Assume it is
596 new_use
->op
= INTRINSIC_NONE
;
597 if (gfc_match_generic_spec (&type
, name
, &op
) == MATCH_ERROR
)
602 case INTERFACE_NAMELESS
:
603 gfc_error ("Missing generic specification in USE statement at %C");
606 case INTERFACE_USER_OP
:
607 case INTERFACE_GENERIC
:
608 m
= gfc_match (" =>");
610 if (type
== INTERFACE_USER_OP
&& m
== MATCH_YES
611 && (gfc_notify_std (GFC_STD_F2003
, "Fortran 2003: Renaming "
612 "operators in USE statements at %C")
616 if (type
== INTERFACE_USER_OP
)
617 new_use
->op
= INTRINSIC_USER
;
622 strcpy (new_use
->use_name
, name
);
625 strcpy (new_use
->local_name
, name
);
626 m
= gfc_match_generic_spec (&type2
, new_use
->use_name
, &op
);
631 if (m
== MATCH_ERROR
)
639 strcpy (new_use
->local_name
, name
);
641 m
= gfc_match_generic_spec (&type2
, new_use
->use_name
, &op
);
646 if (m
== MATCH_ERROR
)
650 if (strcmp (new_use
->use_name
, module_name
) == 0
651 || strcmp (new_use
->local_name
, module_name
) == 0)
653 gfc_error ("The name '%s' at %C has already been used as "
654 "an external module name.", module_name
);
659 case INTERFACE_INTRINSIC_OP
:
667 if (gfc_match_eos () == MATCH_YES
)
669 if (gfc_match_char (',') != MATCH_YES
)
676 gfc_syntax_error (ST_USE
);
684 /* Given a name and a number, inst, return the inst name
685 under which to load this symbol. Returns NULL if this
686 symbol shouldn't be loaded. If inst is zero, returns
687 the number of instances of this name. If interface is
688 true, a user-defined operator is sought, otherwise only
689 non-operators are sought. */
692 find_use_name_n (const char *name
, int *inst
, bool interface
)
698 for (u
= gfc_rename_list
; u
; u
= u
->next
)
700 if (strcmp (u
->use_name
, name
) != 0
701 || (u
->op
== INTRINSIC_USER
&& !interface
)
702 || (u
->op
!= INTRINSIC_USER
&& interface
))
715 return only_flag
? NULL
: name
;
719 return (u
->local_name
[0] != '\0') ? u
->local_name
: name
;
723 /* Given a name, return the name under which to load this symbol.
724 Returns NULL if this symbol shouldn't be loaded. */
727 find_use_name (const char *name
, bool interface
)
730 return find_use_name_n (name
, &i
, interface
);
734 /* Given a real name, return the number of use names associated with it. */
737 number_use_names (const char *name
, bool interface
)
741 c
= find_use_name_n (name
, &i
, interface
);
746 /* Try to find the operator in the current list. */
748 static gfc_use_rename
*
749 find_use_operator (gfc_intrinsic_op op
)
753 for (u
= gfc_rename_list
; u
; u
= u
->next
)
761 /*****************************************************************/
763 /* The next couple of subroutines maintain a tree used to avoid a
764 brute-force search for a combination of true name and module name.
765 While symtree names, the name that a particular symbol is known by
766 can changed with USE statements, we still have to keep track of the
767 true names to generate the correct reference, and also avoid
768 loading the same real symbol twice in a program unit.
770 When we start reading, the true name tree is built and maintained
771 as symbols are read. The tree is searched as we load new symbols
772 to see if it already exists someplace in the namespace. */
774 typedef struct true_name
776 BBT_HEADER (true_name
);
781 static true_name
*true_name_root
;
784 /* Compare two true_name structures. */
787 compare_true_names (void *_t1
, void *_t2
)
792 t1
= (true_name
*) _t1
;
793 t2
= (true_name
*) _t2
;
795 c
= ((t1
->sym
->module
> t2
->sym
->module
)
796 - (t1
->sym
->module
< t2
->sym
->module
));
800 return strcmp (t1
->sym
->name
, t2
->sym
->name
);
804 /* Given a true name, search the true name tree to see if it exists
805 within the main namespace. */
808 find_true_name (const char *name
, const char *module
)
814 sym
.name
= gfc_get_string (name
);
816 sym
.module
= gfc_get_string (module
);
824 c
= compare_true_names ((void *) (&t
), (void *) p
);
828 p
= (c
< 0) ? p
->left
: p
->right
;
835 /* Given a gfc_symbol pointer that is not in the true name tree, add it. */
838 add_true_name (gfc_symbol
*sym
)
842 t
= XCNEW (true_name
);
845 gfc_insert_bbt (&true_name_root
, t
, compare_true_names
);
849 /* Recursive function to build the initial true name tree by
850 recursively traversing the current namespace. */
853 build_tnt (gfc_symtree
*st
)
858 build_tnt (st
->left
);
859 build_tnt (st
->right
);
861 if (find_true_name (st
->n
.sym
->name
, st
->n
.sym
->module
) != NULL
)
864 add_true_name (st
->n
.sym
);
868 /* Initialize the true name tree with the current namespace. */
871 init_true_name_tree (void)
873 true_name_root
= NULL
;
874 build_tnt (gfc_current_ns
->sym_root
);
878 /* Recursively free a true name tree node. */
881 free_true_name (true_name
*t
)
885 free_true_name (t
->left
);
886 free_true_name (t
->right
);
892 /*****************************************************************/
894 /* Module reading and writing. */
898 ATOM_NAME
, ATOM_LPAREN
, ATOM_RPAREN
, ATOM_INTEGER
, ATOM_STRING
902 static atom_type last_atom
;
905 /* The name buffer must be at least as long as a symbol name. Right
906 now it's not clear how we're going to store numeric constants--
907 probably as a hexadecimal string, since this will allow the exact
908 number to be preserved (this can't be done by a decimal
909 representation). Worry about that later. TODO! */
911 #define MAX_ATOM_SIZE 100
914 static char *atom_string
, atom_name
[MAX_ATOM_SIZE
];
917 /* Report problems with a module. Error reporting is not very
918 elaborate, since this sorts of errors shouldn't really happen.
919 This subroutine never returns. */
921 static void bad_module (const char *) ATTRIBUTE_NORETURN
;
924 bad_module (const char *msgid
)
931 gfc_fatal_error ("Reading module %s at line %d column %d: %s",
932 module_name
, module_line
, module_column
, msgid
);
935 gfc_fatal_error ("Writing module %s at line %d column %d: %s",
936 module_name
, module_line
, module_column
, msgid
);
939 gfc_fatal_error ("Module %s at line %d column %d: %s",
940 module_name
, module_line
, module_column
, msgid
);
946 /* Set the module's input pointer. */
949 set_module_locus (module_locus
*m
)
951 module_column
= m
->column
;
952 module_line
= m
->line
;
953 fsetpos (module_fp
, &m
->pos
);
957 /* Get the module's input pointer so that we can restore it later. */
960 get_module_locus (module_locus
*m
)
962 m
->column
= module_column
;
963 m
->line
= module_line
;
964 fgetpos (module_fp
, &m
->pos
);
968 /* Get the next character in the module, updating our reckoning of
976 c
= getc (module_fp
);
979 bad_module ("Unexpected EOF");
992 /* Parse a string constant. The delimiter is guaranteed to be a
1002 get_module_locus (&start
);
1006 /* See how long the string is. */
1011 bad_module ("Unexpected end of module in string constant");
1029 set_module_locus (&start
);
1031 atom_string
= p
= XCNEWVEC (char, len
+ 1);
1033 for (; len
> 0; len
--)
1037 module_char (); /* Guaranteed to be another \'. */
1041 module_char (); /* Terminating \'. */
1042 *p
= '\0'; /* C-style string for debug purposes. */
1046 /* Parse a small integer. */
1049 parse_integer (int c
)
1057 get_module_locus (&m
);
1063 atom_int
= 10 * atom_int
+ c
- '0';
1064 if (atom_int
> 99999999)
1065 bad_module ("Integer overflow");
1068 set_module_locus (&m
);
1086 get_module_locus (&m
);
1091 if (!ISALNUM (c
) && c
!= '_' && c
!= '-')
1095 if (++len
> GFC_MAX_SYMBOL_LEN
)
1096 bad_module ("Name too long");
1101 fseek (module_fp
, -1, SEEK_CUR
);
1102 module_column
= m
.column
+ len
- 1;
1109 /* Read the next atom in the module's input stream. */
1120 while (c
== ' ' || c
== '\r' || c
== '\n');
1145 return ATOM_INTEGER
;
1203 bad_module ("Bad name");
1210 /* Peek at the next atom on the input. */
1218 get_module_locus (&m
);
1221 if (a
== ATOM_STRING
)
1222 gfc_free (atom_string
);
1224 set_module_locus (&m
);
1229 /* Read the next atom from the input, requiring that it be a
1233 require_atom (atom_type type
)
1239 get_module_locus (&m
);
1247 p
= _("Expected name");
1250 p
= _("Expected left parenthesis");
1253 p
= _("Expected right parenthesis");
1256 p
= _("Expected integer");
1259 p
= _("Expected string");
1262 gfc_internal_error ("require_atom(): bad atom type required");
1265 set_module_locus (&m
);
1271 /* Given a pointer to an mstring array, require that the current input
1272 be one of the strings in the array. We return the enum value. */
1275 find_enum (const mstring
*m
)
1279 i
= gfc_string2code (m
, atom_name
);
1283 bad_module ("find_enum(): Enum not found");
1289 /**************** Module output subroutines ***************************/
1291 /* Output a character to a module file. */
1294 write_char (char out
)
1296 if (putc (out
, module_fp
) == EOF
)
1297 gfc_fatal_error ("Error writing modules file: %s", strerror (errno
));
1299 /* Add this to our MD5. */
1300 md5_process_bytes (&out
, sizeof (out
), &ctx
);
1312 /* Write an atom to a module. The line wrapping isn't perfect, but it
1313 should work most of the time. This isn't that big of a deal, since
1314 the file really isn't meant to be read by people anyway. */
1317 write_atom (atom_type atom
, const void *v
)
1327 p
= (const char *) v
;
1339 i
= *((const int *) v
);
1341 gfc_internal_error ("write_atom(): Writing negative integer");
1343 sprintf (buffer
, "%d", i
);
1348 gfc_internal_error ("write_atom(): Trying to write dab atom");
1352 if(p
== NULL
|| *p
== '\0')
1357 if (atom
!= ATOM_RPAREN
)
1359 if (module_column
+ len
> 72)
1364 if (last_atom
!= ATOM_LPAREN
&& module_column
!= 1)
1369 if (atom
== ATOM_STRING
)
1372 while (p
!= NULL
&& *p
)
1374 if (atom
== ATOM_STRING
&& *p
== '\'')
1379 if (atom
== ATOM_STRING
)
1387 /***************** Mid-level I/O subroutines *****************/
1389 /* These subroutines let their caller read or write atoms without
1390 caring about which of the two is actually happening. This lets a
1391 subroutine concentrate on the actual format of the data being
1394 static void mio_expr (gfc_expr
**);
1395 pointer_info
*mio_symbol_ref (gfc_symbol
**);
1396 pointer_info
*mio_interface_rest (gfc_interface
**);
1397 static void mio_symtree_ref (gfc_symtree
**);
1399 /* Read or write an enumerated value. On writing, we return the input
1400 value for the convenience of callers. We avoid using an integer
1401 pointer because enums are sometimes inside bitfields. */
1404 mio_name (int t
, const mstring
*m
)
1406 if (iomode
== IO_OUTPUT
)
1407 write_atom (ATOM_NAME
, gfc_code2string (m
, t
));
1410 require_atom (ATOM_NAME
);
1417 /* Specialization of mio_name. */
1419 #define DECL_MIO_NAME(TYPE) \
1420 static inline TYPE \
1421 MIO_NAME(TYPE) (TYPE t, const mstring *m) \
1423 return (TYPE) mio_name ((int) t, m); \
1425 #define MIO_NAME(TYPE) mio_name_##TYPE
1430 if (iomode
== IO_OUTPUT
)
1431 write_atom (ATOM_LPAREN
, NULL
);
1433 require_atom (ATOM_LPAREN
);
1440 if (iomode
== IO_OUTPUT
)
1441 write_atom (ATOM_RPAREN
, NULL
);
1443 require_atom (ATOM_RPAREN
);
1448 mio_integer (int *ip
)
1450 if (iomode
== IO_OUTPUT
)
1451 write_atom (ATOM_INTEGER
, ip
);
1454 require_atom (ATOM_INTEGER
);
1460 /* Read or write a character pointer that points to a string on the heap. */
1463 mio_allocated_string (const char *s
)
1465 if (iomode
== IO_OUTPUT
)
1467 write_atom (ATOM_STRING
, s
);
1472 require_atom (ATOM_STRING
);
1478 /* Functions for quoting and unquoting strings. */
1481 quote_string (const gfc_char_t
*s
, const size_t slength
)
1483 const gfc_char_t
*p
;
1487 /* Calculate the length we'll need: a backslash takes two ("\\"),
1488 non-printable characters take 10 ("\Uxxxxxxxx") and others take 1. */
1489 for (p
= s
, i
= 0; i
< slength
; p
++, i
++)
1493 else if (!gfc_wide_is_printable (*p
))
1499 q
= res
= XCNEWVEC (char, len
+ 1);
1500 for (p
= s
, i
= 0; i
< slength
; p
++, i
++)
1503 *q
++ = '\\', *q
++ = '\\';
1504 else if (!gfc_wide_is_printable (*p
))
1506 sprintf (q
, "\\U%08" HOST_WIDE_INT_PRINT
"x",
1507 (unsigned HOST_WIDE_INT
) *p
);
1511 *q
++ = (unsigned char) *p
;
1519 unquote_string (const char *s
)
1525 for (p
= s
, len
= 0; *p
; p
++, len
++)
1532 else if (p
[1] == 'U')
1533 p
+= 9; /* That is a "\U????????". */
1535 gfc_internal_error ("unquote_string(): got bad string");
1538 res
= gfc_get_wide_string (len
+ 1);
1539 for (i
= 0, p
= s
; i
< len
; i
++, p
++)
1544 res
[i
] = (unsigned char) *p
;
1545 else if (p
[1] == '\\')
1547 res
[i
] = (unsigned char) '\\';
1552 /* We read the 8-digits hexadecimal constant that follows. */
1557 gcc_assert (p
[1] == 'U');
1558 for (j
= 0; j
< 8; j
++)
1561 gcc_assert (sscanf (&p
[j
+2], "%01x", &n
) == 1);
1575 /* Read or write a character pointer that points to a wide string on the
1576 heap, performing quoting/unquoting of nonprintable characters using the
1577 form \U???????? (where each ? is a hexadecimal digit).
1578 Length is the length of the string, only known and used in output mode. */
1580 static const gfc_char_t
*
1581 mio_allocated_wide_string (const gfc_char_t
*s
, const size_t length
)
1583 if (iomode
== IO_OUTPUT
)
1585 char *quoted
= quote_string (s
, length
);
1586 write_atom (ATOM_STRING
, quoted
);
1592 gfc_char_t
*unquoted
;
1594 require_atom (ATOM_STRING
);
1595 unquoted
= unquote_string (atom_string
);
1596 gfc_free (atom_string
);
1602 /* Read or write a string that is in static memory. */
1605 mio_pool_string (const char **stringp
)
1607 /* TODO: one could write the string only once, and refer to it via a
1610 /* As a special case we have to deal with a NULL string. This
1611 happens for the 'module' member of 'gfc_symbol's that are not in a
1612 module. We read / write these as the empty string. */
1613 if (iomode
== IO_OUTPUT
)
1615 const char *p
= *stringp
== NULL
? "" : *stringp
;
1616 write_atom (ATOM_STRING
, p
);
1620 require_atom (ATOM_STRING
);
1621 *stringp
= atom_string
[0] == '\0' ? NULL
: gfc_get_string (atom_string
);
1622 gfc_free (atom_string
);
1627 /* Read or write a string that is inside of some already-allocated
1631 mio_internal_string (char *string
)
1633 if (iomode
== IO_OUTPUT
)
1634 write_atom (ATOM_STRING
, string
);
1637 require_atom (ATOM_STRING
);
1638 strcpy (string
, atom_string
);
1639 gfc_free (atom_string
);
1645 { AB_ALLOCATABLE
, AB_DIMENSION
, AB_EXTERNAL
, AB_INTRINSIC
, AB_OPTIONAL
,
1646 AB_POINTER
, AB_TARGET
, AB_DUMMY
, AB_RESULT
, AB_DATA
,
1647 AB_IN_NAMELIST
, AB_IN_COMMON
, AB_FUNCTION
, AB_SUBROUTINE
, AB_SEQUENCE
,
1648 AB_ELEMENTAL
, AB_PURE
, AB_RECURSIVE
, AB_GENERIC
, AB_ALWAYS_EXPLICIT
,
1649 AB_CRAY_POINTER
, AB_CRAY_POINTEE
, AB_THREADPRIVATE
, AB_ALLOC_COMP
,
1650 AB_POINTER_COMP
, AB_PRIVATE_COMP
, AB_VALUE
, AB_VOLATILE
, AB_PROTECTED
,
1651 AB_IS_BIND_C
, AB_IS_C_INTEROP
, AB_IS_ISO_C
, AB_ABSTRACT
, AB_ZERO_COMP
,
1656 static const mstring attr_bits
[] =
1658 minit ("ALLOCATABLE", AB_ALLOCATABLE
),
1659 minit ("DIMENSION", AB_DIMENSION
),
1660 minit ("EXTERNAL", AB_EXTERNAL
),
1661 minit ("INTRINSIC", AB_INTRINSIC
),
1662 minit ("OPTIONAL", AB_OPTIONAL
),
1663 minit ("POINTER", AB_POINTER
),
1664 minit ("VOLATILE", AB_VOLATILE
),
1665 minit ("TARGET", AB_TARGET
),
1666 minit ("THREADPRIVATE", AB_THREADPRIVATE
),
1667 minit ("DUMMY", AB_DUMMY
),
1668 minit ("RESULT", AB_RESULT
),
1669 minit ("DATA", AB_DATA
),
1670 minit ("IN_NAMELIST", AB_IN_NAMELIST
),
1671 minit ("IN_COMMON", AB_IN_COMMON
),
1672 minit ("FUNCTION", AB_FUNCTION
),
1673 minit ("SUBROUTINE", AB_SUBROUTINE
),
1674 minit ("SEQUENCE", AB_SEQUENCE
),
1675 minit ("ELEMENTAL", AB_ELEMENTAL
),
1676 minit ("PURE", AB_PURE
),
1677 minit ("RECURSIVE", AB_RECURSIVE
),
1678 minit ("GENERIC", AB_GENERIC
),
1679 minit ("ALWAYS_EXPLICIT", AB_ALWAYS_EXPLICIT
),
1680 minit ("CRAY_POINTER", AB_CRAY_POINTER
),
1681 minit ("CRAY_POINTEE", AB_CRAY_POINTEE
),
1682 minit ("IS_BIND_C", AB_IS_BIND_C
),
1683 minit ("IS_C_INTEROP", AB_IS_C_INTEROP
),
1684 minit ("IS_ISO_C", AB_IS_ISO_C
),
1685 minit ("VALUE", AB_VALUE
),
1686 minit ("ALLOC_COMP", AB_ALLOC_COMP
),
1687 minit ("POINTER_COMP", AB_POINTER_COMP
),
1688 minit ("PRIVATE_COMP", AB_PRIVATE_COMP
),
1689 minit ("ZERO_COMP", AB_ZERO_COMP
),
1690 minit ("PROTECTED", AB_PROTECTED
),
1691 minit ("ABSTRACT", AB_ABSTRACT
),
1692 minit ("EXTENSION", AB_EXTENSION
),
1697 /* Specialization of mio_name. */
1698 DECL_MIO_NAME (ab_attribute
)
1699 DECL_MIO_NAME (ar_type
)
1700 DECL_MIO_NAME (array_type
)
1702 DECL_MIO_NAME (expr_t
)
1703 DECL_MIO_NAME (gfc_access
)
1704 DECL_MIO_NAME (gfc_intrinsic_op
)
1705 DECL_MIO_NAME (ifsrc
)
1706 DECL_MIO_NAME (save_state
)
1707 DECL_MIO_NAME (procedure_type
)
1708 DECL_MIO_NAME (ref_type
)
1709 DECL_MIO_NAME (sym_flavor
)
1710 DECL_MIO_NAME (sym_intent
)
1711 #undef DECL_MIO_NAME
1713 /* Symbol attributes are stored in list with the first three elements
1714 being the enumerated fields, while the remaining elements (if any)
1715 indicate the individual attribute bits. The access field is not
1716 saved-- it controls what symbols are exported when a module is
1720 mio_symbol_attribute (symbol_attribute
*attr
)
1726 attr
->flavor
= MIO_NAME (sym_flavor
) (attr
->flavor
, flavors
);
1727 attr
->intent
= MIO_NAME (sym_intent
) (attr
->intent
, intents
);
1728 attr
->proc
= MIO_NAME (procedure_type
) (attr
->proc
, procedures
);
1729 attr
->if_source
= MIO_NAME (ifsrc
) (attr
->if_source
, ifsrc_types
);
1730 attr
->save
= MIO_NAME (save_state
) (attr
->save
, save_status
);
1732 if (iomode
== IO_OUTPUT
)
1734 if (attr
->allocatable
)
1735 MIO_NAME (ab_attribute
) (AB_ALLOCATABLE
, attr_bits
);
1736 if (attr
->dimension
)
1737 MIO_NAME (ab_attribute
) (AB_DIMENSION
, attr_bits
);
1739 MIO_NAME (ab_attribute
) (AB_EXTERNAL
, attr_bits
);
1740 if (attr
->intrinsic
)
1741 MIO_NAME (ab_attribute
) (AB_INTRINSIC
, attr_bits
);
1743 MIO_NAME (ab_attribute
) (AB_OPTIONAL
, attr_bits
);
1745 MIO_NAME (ab_attribute
) (AB_POINTER
, attr_bits
);
1746 if (attr
->is_protected
)
1747 MIO_NAME (ab_attribute
) (AB_PROTECTED
, attr_bits
);
1749 MIO_NAME (ab_attribute
) (AB_VALUE
, attr_bits
);
1750 if (attr
->volatile_
)
1751 MIO_NAME (ab_attribute
) (AB_VOLATILE
, attr_bits
);
1753 MIO_NAME (ab_attribute
) (AB_TARGET
, attr_bits
);
1754 if (attr
->threadprivate
)
1755 MIO_NAME (ab_attribute
) (AB_THREADPRIVATE
, attr_bits
);
1757 MIO_NAME (ab_attribute
) (AB_DUMMY
, attr_bits
);
1759 MIO_NAME (ab_attribute
) (AB_RESULT
, attr_bits
);
1760 /* We deliberately don't preserve the "entry" flag. */
1763 MIO_NAME (ab_attribute
) (AB_DATA
, attr_bits
);
1764 if (attr
->in_namelist
)
1765 MIO_NAME (ab_attribute
) (AB_IN_NAMELIST
, attr_bits
);
1766 if (attr
->in_common
)
1767 MIO_NAME (ab_attribute
) (AB_IN_COMMON
, attr_bits
);
1770 MIO_NAME (ab_attribute
) (AB_FUNCTION
, attr_bits
);
1771 if (attr
->subroutine
)
1772 MIO_NAME (ab_attribute
) (AB_SUBROUTINE
, attr_bits
);
1774 MIO_NAME (ab_attribute
) (AB_GENERIC
, attr_bits
);
1776 MIO_NAME (ab_attribute
) (AB_ABSTRACT
, attr_bits
);
1779 MIO_NAME (ab_attribute
) (AB_SEQUENCE
, attr_bits
);
1780 if (attr
->elemental
)
1781 MIO_NAME (ab_attribute
) (AB_ELEMENTAL
, attr_bits
);
1783 MIO_NAME (ab_attribute
) (AB_PURE
, attr_bits
);
1784 if (attr
->recursive
)
1785 MIO_NAME (ab_attribute
) (AB_RECURSIVE
, attr_bits
);
1786 if (attr
->always_explicit
)
1787 MIO_NAME (ab_attribute
) (AB_ALWAYS_EXPLICIT
, attr_bits
);
1788 if (attr
->cray_pointer
)
1789 MIO_NAME (ab_attribute
) (AB_CRAY_POINTER
, attr_bits
);
1790 if (attr
->cray_pointee
)
1791 MIO_NAME (ab_attribute
) (AB_CRAY_POINTEE
, attr_bits
);
1792 if (attr
->is_bind_c
)
1793 MIO_NAME(ab_attribute
) (AB_IS_BIND_C
, attr_bits
);
1794 if (attr
->is_c_interop
)
1795 MIO_NAME(ab_attribute
) (AB_IS_C_INTEROP
, attr_bits
);
1797 MIO_NAME(ab_attribute
) (AB_IS_ISO_C
, attr_bits
);
1798 if (attr
->alloc_comp
)
1799 MIO_NAME (ab_attribute
) (AB_ALLOC_COMP
, attr_bits
);
1800 if (attr
->pointer_comp
)
1801 MIO_NAME (ab_attribute
) (AB_POINTER_COMP
, attr_bits
);
1802 if (attr
->private_comp
)
1803 MIO_NAME (ab_attribute
) (AB_PRIVATE_COMP
, attr_bits
);
1804 if (attr
->zero_comp
)
1805 MIO_NAME (ab_attribute
) (AB_ZERO_COMP
, attr_bits
);
1806 if (attr
->extension
)
1807 MIO_NAME (ab_attribute
) (AB_EXTENSION
, attr_bits
);
1817 if (t
== ATOM_RPAREN
)
1820 bad_module ("Expected attribute bit name");
1822 switch ((ab_attribute
) find_enum (attr_bits
))
1824 case AB_ALLOCATABLE
:
1825 attr
->allocatable
= 1;
1828 attr
->dimension
= 1;
1834 attr
->intrinsic
= 1;
1843 attr
->is_protected
= 1;
1849 attr
->volatile_
= 1;
1854 case AB_THREADPRIVATE
:
1855 attr
->threadprivate
= 1;
1866 case AB_IN_NAMELIST
:
1867 attr
->in_namelist
= 1;
1870 attr
->in_common
= 1;
1876 attr
->subroutine
= 1;
1888 attr
->elemental
= 1;
1894 attr
->recursive
= 1;
1896 case AB_ALWAYS_EXPLICIT
:
1897 attr
->always_explicit
= 1;
1899 case AB_CRAY_POINTER
:
1900 attr
->cray_pointer
= 1;
1902 case AB_CRAY_POINTEE
:
1903 attr
->cray_pointee
= 1;
1906 attr
->is_bind_c
= 1;
1908 case AB_IS_C_INTEROP
:
1909 attr
->is_c_interop
= 1;
1915 attr
->alloc_comp
= 1;
1917 case AB_POINTER_COMP
:
1918 attr
->pointer_comp
= 1;
1920 case AB_PRIVATE_COMP
:
1921 attr
->private_comp
= 1;
1924 attr
->zero_comp
= 1;
1927 attr
->extension
= 1;
1935 static const mstring bt_types
[] = {
1936 minit ("INTEGER", BT_INTEGER
),
1937 minit ("REAL", BT_REAL
),
1938 minit ("COMPLEX", BT_COMPLEX
),
1939 minit ("LOGICAL", BT_LOGICAL
),
1940 minit ("CHARACTER", BT_CHARACTER
),
1941 minit ("DERIVED", BT_DERIVED
),
1942 minit ("PROCEDURE", BT_PROCEDURE
),
1943 minit ("UNKNOWN", BT_UNKNOWN
),
1944 minit ("VOID", BT_VOID
),
1950 mio_charlen (gfc_charlen
**clp
)
1956 if (iomode
== IO_OUTPUT
)
1960 mio_expr (&cl
->length
);
1964 if (peek_atom () != ATOM_RPAREN
)
1966 cl
= gfc_get_charlen ();
1967 mio_expr (&cl
->length
);
1971 cl
->next
= gfc_current_ns
->cl_list
;
1972 gfc_current_ns
->cl_list
= cl
;
1980 /* See if a name is a generated name. */
1983 check_unique_name (const char *name
)
1985 return *name
== '@';
1990 mio_typespec (gfc_typespec
*ts
)
1994 ts
->type
= MIO_NAME (bt
) (ts
->type
, bt_types
);
1996 if (ts
->type
!= BT_DERIVED
)
1997 mio_integer (&ts
->kind
);
1999 mio_symbol_ref (&ts
->derived
);
2001 /* Add info for C interop and is_iso_c. */
2002 mio_integer (&ts
->is_c_interop
);
2003 mio_integer (&ts
->is_iso_c
);
2005 /* If the typespec is for an identifier either from iso_c_binding, or
2006 a constant that was initialized to an identifier from it, use the
2007 f90_type. Otherwise, use the ts->type, since it shouldn't matter. */
2009 ts
->f90_type
= MIO_NAME (bt
) (ts
->f90_type
, bt_types
);
2011 ts
->f90_type
= MIO_NAME (bt
) (ts
->type
, bt_types
);
2013 if (ts
->type
!= BT_CHARACTER
)
2015 /* ts->cl is only valid for BT_CHARACTER. */
2020 mio_charlen (&ts
->cl
);
2026 static const mstring array_spec_types
[] = {
2027 minit ("EXPLICIT", AS_EXPLICIT
),
2028 minit ("ASSUMED_SHAPE", AS_ASSUMED_SHAPE
),
2029 minit ("DEFERRED", AS_DEFERRED
),
2030 minit ("ASSUMED_SIZE", AS_ASSUMED_SIZE
),
2036 mio_array_spec (gfc_array_spec
**asp
)
2043 if (iomode
== IO_OUTPUT
)
2051 if (peek_atom () == ATOM_RPAREN
)
2057 *asp
= as
= gfc_get_array_spec ();
2060 mio_integer (&as
->rank
);
2061 as
->type
= MIO_NAME (array_type
) (as
->type
, array_spec_types
);
2063 for (i
= 0; i
< as
->rank
; i
++)
2065 mio_expr (&as
->lower
[i
]);
2066 mio_expr (&as
->upper
[i
]);
2074 /* Given a pointer to an array reference structure (which lives in a
2075 gfc_ref structure), find the corresponding array specification
2076 structure. Storing the pointer in the ref structure doesn't quite
2077 work when loading from a module. Generating code for an array
2078 reference also needs more information than just the array spec. */
2080 static const mstring array_ref_types
[] = {
2081 minit ("FULL", AR_FULL
),
2082 minit ("ELEMENT", AR_ELEMENT
),
2083 minit ("SECTION", AR_SECTION
),
2089 mio_array_ref (gfc_array_ref
*ar
)
2094 ar
->type
= MIO_NAME (ar_type
) (ar
->type
, array_ref_types
);
2095 mio_integer (&ar
->dimen
);
2103 for (i
= 0; i
< ar
->dimen
; i
++)
2104 mio_expr (&ar
->start
[i
]);
2109 for (i
= 0; i
< ar
->dimen
; i
++)
2111 mio_expr (&ar
->start
[i
]);
2112 mio_expr (&ar
->end
[i
]);
2113 mio_expr (&ar
->stride
[i
]);
2119 gfc_internal_error ("mio_array_ref(): Unknown array ref");
2122 /* Unfortunately, ar->dimen_type is an anonymous enumerated type so
2123 we can't call mio_integer directly. Instead loop over each element
2124 and cast it to/from an integer. */
2125 if (iomode
== IO_OUTPUT
)
2127 for (i
= 0; i
< ar
->dimen
; i
++)
2129 int tmp
= (int)ar
->dimen_type
[i
];
2130 write_atom (ATOM_INTEGER
, &tmp
);
2135 for (i
= 0; i
< ar
->dimen
; i
++)
2137 require_atom (ATOM_INTEGER
);
2138 ar
->dimen_type
[i
] = atom_int
;
2142 if (iomode
== IO_INPUT
)
2144 ar
->where
= gfc_current_locus
;
2146 for (i
= 0; i
< ar
->dimen
; i
++)
2147 ar
->c_where
[i
] = gfc_current_locus
;
2154 /* Saves or restores a pointer. The pointer is converted back and
2155 forth from an integer. We return the pointer_info pointer so that
2156 the caller can take additional action based on the pointer type. */
2158 static pointer_info
*
2159 mio_pointer_ref (void *gp
)
2163 if (iomode
== IO_OUTPUT
)
2165 p
= get_pointer (*((char **) gp
));
2166 write_atom (ATOM_INTEGER
, &p
->integer
);
2170 require_atom (ATOM_INTEGER
);
2171 p
= add_fixup (atom_int
, gp
);
2178 /* Save and load references to components that occur within
2179 expressions. We have to describe these references by a number and
2180 by name. The number is necessary for forward references during
2181 reading, and the name is necessary if the symbol already exists in
2182 the namespace and is not loaded again. */
2185 mio_component_ref (gfc_component
**cp
, gfc_symbol
*sym
)
2187 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
2191 p
= mio_pointer_ref (cp
);
2192 if (p
->type
== P_UNKNOWN
)
2193 p
->type
= P_COMPONENT
;
2195 if (iomode
== IO_OUTPUT
)
2196 mio_pool_string (&(*cp
)->name
);
2199 mio_internal_string (name
);
2201 /* It can happen that a component reference can be read before the
2202 associated derived type symbol has been loaded. Return now and
2203 wait for a later iteration of load_needed. */
2207 if (sym
->components
!= NULL
&& p
->u
.pointer
== NULL
)
2209 /* Symbol already loaded, so search by name. */
2210 for (q
= sym
->components
; q
; q
= q
->next
)
2211 if (strcmp (q
->name
, name
) == 0)
2215 gfc_internal_error ("mio_component_ref(): Component not found");
2217 associate_integer_pointer (p
, q
);
2220 /* Make sure this symbol will eventually be loaded. */
2221 p
= find_pointer2 (sym
);
2222 if (p
->u
.rsym
.state
== UNUSED
)
2223 p
->u
.rsym
.state
= NEEDED
;
2229 mio_component (gfc_component
*c
)
2236 if (iomode
== IO_OUTPUT
)
2238 p
= get_pointer (c
);
2239 mio_integer (&p
->integer
);
2244 p
= get_integer (n
);
2245 associate_integer_pointer (p
, c
);
2248 if (p
->type
== P_UNKNOWN
)
2249 p
->type
= P_COMPONENT
;
2251 mio_pool_string (&c
->name
);
2252 mio_typespec (&c
->ts
);
2253 mio_array_spec (&c
->as
);
2255 mio_symbol_attribute (&c
->attr
);
2256 c
->attr
.access
= MIO_NAME (gfc_access
) (c
->attr
.access
, access_types
);
2258 mio_expr (&c
->initializer
);
2264 mio_component_list (gfc_component
**cp
)
2266 gfc_component
*c
, *tail
;
2270 if (iomode
== IO_OUTPUT
)
2272 for (c
= *cp
; c
; c
= c
->next
)
2282 if (peek_atom () == ATOM_RPAREN
)
2285 c
= gfc_get_component ();
2302 mio_actual_arg (gfc_actual_arglist
*a
)
2305 mio_pool_string (&a
->name
);
2306 mio_expr (&a
->expr
);
2312 mio_actual_arglist (gfc_actual_arglist
**ap
)
2314 gfc_actual_arglist
*a
, *tail
;
2318 if (iomode
== IO_OUTPUT
)
2320 for (a
= *ap
; a
; a
= a
->next
)
2330 if (peek_atom () != ATOM_LPAREN
)
2333 a
= gfc_get_actual_arglist ();
2349 /* Read and write formal argument lists. */
2352 mio_formal_arglist (gfc_symbol
*sym
)
2354 gfc_formal_arglist
*f
, *tail
;
2358 if (iomode
== IO_OUTPUT
)
2360 for (f
= sym
->formal
; f
; f
= f
->next
)
2361 mio_symbol_ref (&f
->sym
);
2365 sym
->formal
= tail
= NULL
;
2367 while (peek_atom () != ATOM_RPAREN
)
2369 f
= gfc_get_formal_arglist ();
2370 mio_symbol_ref (&f
->sym
);
2372 if (sym
->formal
== NULL
)
2385 /* Save or restore a reference to a symbol node. */
2388 mio_symbol_ref (gfc_symbol
**symp
)
2392 p
= mio_pointer_ref (symp
);
2393 if (p
->type
== P_UNKNOWN
)
2396 if (iomode
== IO_OUTPUT
)
2398 if (p
->u
.wsym
.state
== UNREFERENCED
)
2399 p
->u
.wsym
.state
= NEEDS_WRITE
;
2403 if (p
->u
.rsym
.state
== UNUSED
)
2404 p
->u
.rsym
.state
= NEEDED
;
2410 /* Save or restore a reference to a symtree node. */
2413 mio_symtree_ref (gfc_symtree
**stp
)
2418 if (iomode
== IO_OUTPUT
)
2419 mio_symbol_ref (&(*stp
)->n
.sym
);
2422 require_atom (ATOM_INTEGER
);
2423 p
= get_integer (atom_int
);
2425 /* An unused equivalence member; make a symbol and a symtree
2427 if (in_load_equiv
&& p
->u
.rsym
.symtree
== NULL
)
2429 /* Since this is not used, it must have a unique name. */
2430 p
->u
.rsym
.symtree
= gfc_get_unique_symtree (gfc_current_ns
);
2432 /* Make the symbol. */
2433 if (p
->u
.rsym
.sym
== NULL
)
2435 p
->u
.rsym
.sym
= gfc_new_symbol (p
->u
.rsym
.true_name
,
2437 p
->u
.rsym
.sym
->module
= gfc_get_string (p
->u
.rsym
.module
);
2440 p
->u
.rsym
.symtree
->n
.sym
= p
->u
.rsym
.sym
;
2441 p
->u
.rsym
.symtree
->n
.sym
->refs
++;
2442 p
->u
.rsym
.referenced
= 1;
2444 /* If the symbol is PRIVATE and in COMMON, load_commons will
2445 generate a fixup symbol, which must be associated. */
2447 resolve_fixups (p
->fixup
, p
->u
.rsym
.sym
);
2451 if (p
->type
== P_UNKNOWN
)
2454 if (p
->u
.rsym
.state
== UNUSED
)
2455 p
->u
.rsym
.state
= NEEDED
;
2457 if (p
->u
.rsym
.symtree
!= NULL
)
2459 *stp
= p
->u
.rsym
.symtree
;
2463 f
= XCNEW (fixup_t
);
2465 f
->next
= p
->u
.rsym
.stfixup
;
2466 p
->u
.rsym
.stfixup
= f
;
2468 f
->pointer
= (void **) stp
;
2475 mio_iterator (gfc_iterator
**ip
)
2481 if (iomode
== IO_OUTPUT
)
2488 if (peek_atom () == ATOM_RPAREN
)
2494 *ip
= gfc_get_iterator ();
2499 mio_expr (&iter
->var
);
2500 mio_expr (&iter
->start
);
2501 mio_expr (&iter
->end
);
2502 mio_expr (&iter
->step
);
2510 mio_constructor (gfc_constructor
**cp
)
2512 gfc_constructor
*c
, *tail
;
2516 if (iomode
== IO_OUTPUT
)
2518 for (c
= *cp
; c
; c
= c
->next
)
2521 mio_expr (&c
->expr
);
2522 mio_iterator (&c
->iterator
);
2531 while (peek_atom () != ATOM_RPAREN
)
2533 c
= gfc_get_constructor ();
2543 mio_expr (&c
->expr
);
2544 mio_iterator (&c
->iterator
);
2553 static const mstring ref_types
[] = {
2554 minit ("ARRAY", REF_ARRAY
),
2555 minit ("COMPONENT", REF_COMPONENT
),
2556 minit ("SUBSTRING", REF_SUBSTRING
),
2562 mio_ref (gfc_ref
**rp
)
2569 r
->type
= MIO_NAME (ref_type
) (r
->type
, ref_types
);
2574 mio_array_ref (&r
->u
.ar
);
2578 mio_symbol_ref (&r
->u
.c
.sym
);
2579 mio_component_ref (&r
->u
.c
.component
, r
->u
.c
.sym
);
2583 mio_expr (&r
->u
.ss
.start
);
2584 mio_expr (&r
->u
.ss
.end
);
2585 mio_charlen (&r
->u
.ss
.length
);
2594 mio_ref_list (gfc_ref
**rp
)
2596 gfc_ref
*ref
, *head
, *tail
;
2600 if (iomode
== IO_OUTPUT
)
2602 for (ref
= *rp
; ref
; ref
= ref
->next
)
2609 while (peek_atom () != ATOM_RPAREN
)
2612 head
= tail
= gfc_get_ref ();
2615 tail
->next
= gfc_get_ref ();
2629 /* Read and write an integer value. */
2632 mio_gmp_integer (mpz_t
*integer
)
2636 if (iomode
== IO_INPUT
)
2638 if (parse_atom () != ATOM_STRING
)
2639 bad_module ("Expected integer string");
2641 mpz_init (*integer
);
2642 if (mpz_set_str (*integer
, atom_string
, 10))
2643 bad_module ("Error converting integer");
2645 gfc_free (atom_string
);
2649 p
= mpz_get_str (NULL
, 10, *integer
);
2650 write_atom (ATOM_STRING
, p
);
2657 mio_gmp_real (mpfr_t
*real
)
2662 if (iomode
== IO_INPUT
)
2664 if (parse_atom () != ATOM_STRING
)
2665 bad_module ("Expected real string");
2668 mpfr_set_str (*real
, atom_string
, 16, GFC_RND_MODE
);
2669 gfc_free (atom_string
);
2673 p
= mpfr_get_str (NULL
, &exponent
, 16, 0, *real
, GFC_RND_MODE
);
2675 if (mpfr_nan_p (*real
) || mpfr_inf_p (*real
))
2677 write_atom (ATOM_STRING
, p
);
2682 atom_string
= XCNEWVEC (char, strlen (p
) + 20);
2684 sprintf (atom_string
, "0.%s@%ld", p
, exponent
);
2686 /* Fix negative numbers. */
2687 if (atom_string
[2] == '-')
2689 atom_string
[0] = '-';
2690 atom_string
[1] = '0';
2691 atom_string
[2] = '.';
2694 write_atom (ATOM_STRING
, atom_string
);
2696 gfc_free (atom_string
);
2702 /* Save and restore the shape of an array constructor. */
2705 mio_shape (mpz_t
**pshape
, int rank
)
2711 /* A NULL shape is represented by (). */
2714 if (iomode
== IO_OUTPUT
)
2726 if (t
== ATOM_RPAREN
)
2733 shape
= gfc_get_shape (rank
);
2737 for (n
= 0; n
< rank
; n
++)
2738 mio_gmp_integer (&shape
[n
]);
2744 static const mstring expr_types
[] = {
2745 minit ("OP", EXPR_OP
),
2746 minit ("FUNCTION", EXPR_FUNCTION
),
2747 minit ("CONSTANT", EXPR_CONSTANT
),
2748 minit ("VARIABLE", EXPR_VARIABLE
),
2749 minit ("SUBSTRING", EXPR_SUBSTRING
),
2750 minit ("STRUCTURE", EXPR_STRUCTURE
),
2751 minit ("ARRAY", EXPR_ARRAY
),
2752 minit ("NULL", EXPR_NULL
),
2756 /* INTRINSIC_ASSIGN is missing because it is used as an index for
2757 generic operators, not in expressions. INTRINSIC_USER is also
2758 replaced by the correct function name by the time we see it. */
2760 static const mstring intrinsics
[] =
2762 minit ("UPLUS", INTRINSIC_UPLUS
),
2763 minit ("UMINUS", INTRINSIC_UMINUS
),
2764 minit ("PLUS", INTRINSIC_PLUS
),
2765 minit ("MINUS", INTRINSIC_MINUS
),
2766 minit ("TIMES", INTRINSIC_TIMES
),
2767 minit ("DIVIDE", INTRINSIC_DIVIDE
),
2768 minit ("POWER", INTRINSIC_POWER
),
2769 minit ("CONCAT", INTRINSIC_CONCAT
),
2770 minit ("AND", INTRINSIC_AND
),
2771 minit ("OR", INTRINSIC_OR
),
2772 minit ("EQV", INTRINSIC_EQV
),
2773 minit ("NEQV", INTRINSIC_NEQV
),
2774 minit ("EQ_SIGN", INTRINSIC_EQ
),
2775 minit ("EQ", INTRINSIC_EQ_OS
),
2776 minit ("NE_SIGN", INTRINSIC_NE
),
2777 minit ("NE", INTRINSIC_NE_OS
),
2778 minit ("GT_SIGN", INTRINSIC_GT
),
2779 minit ("GT", INTRINSIC_GT_OS
),
2780 minit ("GE_SIGN", INTRINSIC_GE
),
2781 minit ("GE", INTRINSIC_GE_OS
),
2782 minit ("LT_SIGN", INTRINSIC_LT
),
2783 minit ("LT", INTRINSIC_LT_OS
),
2784 minit ("LE_SIGN", INTRINSIC_LE
),
2785 minit ("LE", INTRINSIC_LE_OS
),
2786 minit ("NOT", INTRINSIC_NOT
),
2787 minit ("PARENTHESES", INTRINSIC_PARENTHESES
),
2792 /* Remedy a couple of situations where the gfc_expr's can be defective. */
2795 fix_mio_expr (gfc_expr
*e
)
2797 gfc_symtree
*ns_st
= NULL
;
2800 if (iomode
!= IO_OUTPUT
)
2805 /* If this is a symtree for a symbol that came from a contained module
2806 namespace, it has a unique name and we should look in the current
2807 namespace to see if the required, non-contained symbol is available
2808 yet. If so, the latter should be written. */
2809 if (e
->symtree
->n
.sym
&& check_unique_name (e
->symtree
->name
))
2810 ns_st
= gfc_find_symtree (gfc_current_ns
->sym_root
,
2811 e
->symtree
->n
.sym
->name
);
2813 /* On the other hand, if the existing symbol is the module name or the
2814 new symbol is a dummy argument, do not do the promotion. */
2815 if (ns_st
&& ns_st
->n
.sym
2816 && ns_st
->n
.sym
->attr
.flavor
!= FL_MODULE
2817 && !e
->symtree
->n
.sym
->attr
.dummy
)
2820 else if (e
->expr_type
== EXPR_FUNCTION
&& e
->value
.function
.name
)
2822 /* In some circumstances, a function used in an initialization
2823 expression, in one use associated module, can fail to be
2824 coupled to its symtree when used in a specification
2825 expression in another module. */
2826 fname
= e
->value
.function
.esym
? e
->value
.function
.esym
->name
2827 : e
->value
.function
.isym
->name
;
2828 e
->symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, fname
);
2833 /* Read and write expressions. The form "()" is allowed to indicate a
2837 mio_expr (gfc_expr
**ep
)
2845 if (iomode
== IO_OUTPUT
)
2854 MIO_NAME (expr_t
) (e
->expr_type
, expr_types
);
2859 if (t
== ATOM_RPAREN
)
2866 bad_module ("Expected expression type");
2868 e
= *ep
= gfc_get_expr ();
2869 e
->where
= gfc_current_locus
;
2870 e
->expr_type
= (expr_t
) find_enum (expr_types
);
2873 mio_typespec (&e
->ts
);
2874 mio_integer (&e
->rank
);
2878 switch (e
->expr_type
)
2882 = MIO_NAME (gfc_intrinsic_op
) (e
->value
.op
.op
, intrinsics
);
2884 switch (e
->value
.op
.op
)
2886 case INTRINSIC_UPLUS
:
2887 case INTRINSIC_UMINUS
:
2889 case INTRINSIC_PARENTHESES
:
2890 mio_expr (&e
->value
.op
.op1
);
2893 case INTRINSIC_PLUS
:
2894 case INTRINSIC_MINUS
:
2895 case INTRINSIC_TIMES
:
2896 case INTRINSIC_DIVIDE
:
2897 case INTRINSIC_POWER
:
2898 case INTRINSIC_CONCAT
:
2902 case INTRINSIC_NEQV
:
2904 case INTRINSIC_EQ_OS
:
2906 case INTRINSIC_NE_OS
:
2908 case INTRINSIC_GT_OS
:
2910 case INTRINSIC_GE_OS
:
2912 case INTRINSIC_LT_OS
:
2914 case INTRINSIC_LE_OS
:
2915 mio_expr (&e
->value
.op
.op1
);
2916 mio_expr (&e
->value
.op
.op2
);
2920 bad_module ("Bad operator");
2926 mio_symtree_ref (&e
->symtree
);
2927 mio_actual_arglist (&e
->value
.function
.actual
);
2929 if (iomode
== IO_OUTPUT
)
2931 e
->value
.function
.name
2932 = mio_allocated_string (e
->value
.function
.name
);
2933 flag
= e
->value
.function
.esym
!= NULL
;
2934 mio_integer (&flag
);
2936 mio_symbol_ref (&e
->value
.function
.esym
);
2938 write_atom (ATOM_STRING
, e
->value
.function
.isym
->name
);
2942 require_atom (ATOM_STRING
);
2943 e
->value
.function
.name
= gfc_get_string (atom_string
);
2944 gfc_free (atom_string
);
2946 mio_integer (&flag
);
2948 mio_symbol_ref (&e
->value
.function
.esym
);
2951 require_atom (ATOM_STRING
);
2952 e
->value
.function
.isym
= gfc_find_function (atom_string
);
2953 gfc_free (atom_string
);
2960 mio_symtree_ref (&e
->symtree
);
2961 mio_ref_list (&e
->ref
);
2964 case EXPR_SUBSTRING
:
2965 e
->value
.character
.string
2966 = CONST_CAST (gfc_char_t
*,
2967 mio_allocated_wide_string (e
->value
.character
.string
,
2968 e
->value
.character
.length
));
2969 mio_ref_list (&e
->ref
);
2972 case EXPR_STRUCTURE
:
2974 mio_constructor (&e
->value
.constructor
);
2975 mio_shape (&e
->shape
, e
->rank
);
2982 mio_gmp_integer (&e
->value
.integer
);
2986 gfc_set_model_kind (e
->ts
.kind
);
2987 mio_gmp_real (&e
->value
.real
);
2991 gfc_set_model_kind (e
->ts
.kind
);
2992 mio_gmp_real (&e
->value
.complex.r
);
2993 mio_gmp_real (&e
->value
.complex.i
);
2997 mio_integer (&e
->value
.logical
);
3001 mio_integer (&e
->value
.character
.length
);
3002 e
->value
.character
.string
3003 = CONST_CAST (gfc_char_t
*,
3004 mio_allocated_wide_string (e
->value
.character
.string
,
3005 e
->value
.character
.length
));
3009 bad_module ("Bad type in constant expression");
3022 /* Read and write namelists. */
3025 mio_namelist (gfc_symbol
*sym
)
3027 gfc_namelist
*n
, *m
;
3028 const char *check_name
;
3032 if (iomode
== IO_OUTPUT
)
3034 for (n
= sym
->namelist
; n
; n
= n
->next
)
3035 mio_symbol_ref (&n
->sym
);
3039 /* This departure from the standard is flagged as an error.
3040 It does, in fact, work correctly. TODO: Allow it
3042 if (sym
->attr
.flavor
== FL_NAMELIST
)
3044 check_name
= find_use_name (sym
->name
, false);
3045 if (check_name
&& strcmp (check_name
, sym
->name
) != 0)
3046 gfc_error ("Namelist %s cannot be renamed by USE "
3047 "association to %s", sym
->name
, check_name
);
3051 while (peek_atom () != ATOM_RPAREN
)
3053 n
= gfc_get_namelist ();
3054 mio_symbol_ref (&n
->sym
);
3056 if (sym
->namelist
== NULL
)
3063 sym
->namelist_tail
= m
;
3070 /* Save/restore lists of gfc_interface structures. When loading an
3071 interface, we are really appending to the existing list of
3072 interfaces. Checking for duplicate and ambiguous interfaces has to
3073 be done later when all symbols have been loaded. */
3076 mio_interface_rest (gfc_interface
**ip
)
3078 gfc_interface
*tail
, *p
;
3079 pointer_info
*pi
= NULL
;
3081 if (iomode
== IO_OUTPUT
)
3084 for (p
= *ip
; p
; p
= p
->next
)
3085 mio_symbol_ref (&p
->sym
);
3100 if (peek_atom () == ATOM_RPAREN
)
3103 p
= gfc_get_interface ();
3104 p
->where
= gfc_current_locus
;
3105 pi
= mio_symbol_ref (&p
->sym
);
3121 /* Save/restore a nameless operator interface. */
3124 mio_interface (gfc_interface
**ip
)
3127 mio_interface_rest (ip
);
3131 /* Save/restore a named operator interface. */
3134 mio_symbol_interface (const char **name
, const char **module
,
3138 mio_pool_string (name
);
3139 mio_pool_string (module
);
3140 mio_interface_rest (ip
);
3145 mio_namespace_ref (gfc_namespace
**nsp
)
3150 p
= mio_pointer_ref (nsp
);
3152 if (p
->type
== P_UNKNOWN
)
3153 p
->type
= P_NAMESPACE
;
3155 if (iomode
== IO_INPUT
&& p
->integer
!= 0)
3157 ns
= (gfc_namespace
*) p
->u
.pointer
;
3160 ns
= gfc_get_namespace (NULL
, 0);
3161 associate_integer_pointer (p
, ns
);
3169 /* Save/restore the f2k_derived namespace of a derived-type symbol. */
3172 mio_finalizer (gfc_finalizer
**f
)
3174 if (iomode
== IO_OUTPUT
)
3177 gcc_assert ((*f
)->proc_tree
); /* Should already be resolved. */
3178 mio_symtree_ref (&(*f
)->proc_tree
);
3182 *f
= gfc_get_finalizer ();
3183 (*f
)->where
= gfc_current_locus
; /* Value should not matter. */
3186 mio_symtree_ref (&(*f
)->proc_tree
);
3187 (*f
)->proc_sym
= NULL
;
3192 mio_f2k_derived (gfc_namespace
*f2k
)
3194 /* Handle the list of finalizer procedures. */
3196 if (iomode
== IO_OUTPUT
)
3199 for (f
= f2k
->finalizers
; f
; f
= f
->next
)
3204 f2k
->finalizers
= NULL
;
3205 while (peek_atom () != ATOM_RPAREN
)
3208 mio_finalizer (&cur
);
3209 cur
->next
= f2k
->finalizers
;
3210 f2k
->finalizers
= cur
;
3217 mio_full_f2k_derived (gfc_symbol
*sym
)
3221 if (iomode
== IO_OUTPUT
)
3223 if (sym
->f2k_derived
)
3224 mio_f2k_derived (sym
->f2k_derived
);
3228 if (peek_atom () != ATOM_RPAREN
)
3230 sym
->f2k_derived
= gfc_get_namespace (NULL
, 0);
3231 mio_f2k_derived (sym
->f2k_derived
);
3234 gcc_assert (!sym
->f2k_derived
);
3241 /* Unlike most other routines, the address of the symbol node is already
3242 fixed on input and the name/module has already been filled in. */
3245 mio_symbol (gfc_symbol
*sym
)
3247 int intmod
= INTMOD_NONE
;
3249 gfc_formal_arglist
*formal
;
3253 mio_symbol_attribute (&sym
->attr
);
3254 mio_typespec (&sym
->ts
);
3256 /* Contained procedures don't have formal namespaces. Instead we output the
3257 procedure namespace. The will contain the formal arguments. */
3258 if (iomode
== IO_OUTPUT
)
3260 formal
= sym
->formal
;
3261 while (formal
&& !formal
->sym
)
3262 formal
= formal
->next
;
3265 mio_namespace_ref (&formal
->sym
->ns
);
3267 mio_namespace_ref (&sym
->formal_ns
);
3271 mio_namespace_ref (&sym
->formal_ns
);
3274 sym
->formal_ns
->proc_name
= sym
;
3279 /* Save/restore common block links. */
3280 mio_symbol_ref (&sym
->common_next
);
3282 mio_formal_arglist (sym
);
3284 if (sym
->attr
.flavor
== FL_PARAMETER
)
3285 mio_expr (&sym
->value
);
3287 mio_array_spec (&sym
->as
);
3289 mio_symbol_ref (&sym
->result
);
3291 if (sym
->attr
.cray_pointee
)
3292 mio_symbol_ref (&sym
->cp_pointer
);
3294 /* Note that components are always saved, even if they are supposed
3295 to be private. Component access is checked during searching. */
3297 mio_component_list (&sym
->components
);
3299 if (sym
->components
!= NULL
)
3300 sym
->component_access
3301 = MIO_NAME (gfc_access
) (sym
->component_access
, access_types
);
3303 /* Load/save the f2k_derived namespace of a derived-type symbol. */
3304 mio_full_f2k_derived (sym
);
3308 /* Add the fields that say whether this is from an intrinsic module,
3309 and if so, what symbol it is within the module. */
3310 /* mio_integer (&(sym->from_intmod)); */
3311 if (iomode
== IO_OUTPUT
)
3313 intmod
= sym
->from_intmod
;
3314 mio_integer (&intmod
);
3318 mio_integer (&intmod
);
3319 sym
->from_intmod
= intmod
;
3322 mio_integer (&(sym
->intmod_sym_id
));
3328 /************************* Top level subroutines *************************/
3330 /* Given a root symtree node and a symbol, try to find a symtree that
3331 references the symbol that is not a unique name. */
3333 static gfc_symtree
*
3334 find_symtree_for_symbol (gfc_symtree
*st
, gfc_symbol
*sym
)
3336 gfc_symtree
*s
= NULL
;
3341 s
= find_symtree_for_symbol (st
->right
, sym
);
3344 s
= find_symtree_for_symbol (st
->left
, sym
);
3348 if (st
->n
.sym
== sym
&& !check_unique_name (st
->name
))
3355 /* A recursive function to look for a specific symbol by name and by
3356 module. Whilst several symtrees might point to one symbol, its
3357 is sufficient for the purposes here than one exist. Note that
3358 generic interfaces are distinguished as are symbols that have been
3359 renamed in another module. */
3360 static gfc_symtree
*
3361 find_symbol (gfc_symtree
*st
, const char *name
,
3362 const char *module
, int generic
)
3365 gfc_symtree
*retval
, *s
;
3367 if (st
== NULL
|| st
->n
.sym
== NULL
)
3370 c
= strcmp (name
, st
->n
.sym
->name
);
3371 if (c
== 0 && st
->n
.sym
->module
3372 && strcmp (module
, st
->n
.sym
->module
) == 0
3373 && !check_unique_name (st
->name
))
3375 s
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
3377 /* Detect symbols that are renamed by use association in another
3378 module by the absence of a symtree and null attr.use_rename,
3379 since the latter is not transmitted in the module file. */
3380 if (((!generic
&& !st
->n
.sym
->attr
.generic
)
3381 || (generic
&& st
->n
.sym
->attr
.generic
))
3382 && !(s
== NULL
&& !st
->n
.sym
->attr
.use_rename
))
3386 retval
= find_symbol (st
->left
, name
, module
, generic
);
3389 retval
= find_symbol (st
->right
, name
, module
, generic
);
3395 /* Skip a list between balanced left and right parens. */
3405 switch (parse_atom ())
3416 gfc_free (atom_string
);
3428 /* Load operator interfaces from the module. Interfaces are unusual
3429 in that they attach themselves to existing symbols. */
3432 load_operator_interfaces (void)
3435 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module
[GFC_MAX_SYMBOL_LEN
+ 1];
3437 pointer_info
*pi
= NULL
;
3442 while (peek_atom () != ATOM_RPAREN
)
3446 mio_internal_string (name
);
3447 mio_internal_string (module
);
3449 n
= number_use_names (name
, true);
3452 for (i
= 1; i
<= n
; i
++)
3454 /* Decide if we need to load this one or not. */
3455 p
= find_use_name_n (name
, &i
, true);
3459 while (parse_atom () != ATOM_RPAREN
);
3465 uop
= gfc_get_uop (p
);
3466 pi
= mio_interface_rest (&uop
->op
);
3470 if (gfc_find_uop (p
, NULL
))
3472 uop
= gfc_get_uop (p
);
3473 uop
->op
= gfc_get_interface ();
3474 uop
->op
->where
= gfc_current_locus
;
3475 add_fixup (pi
->integer
, &uop
->op
->sym
);
3484 /* Load interfaces from the module. Interfaces are unusual in that
3485 they attach themselves to existing symbols. */
3488 load_generic_interfaces (void)
3491 char name
[GFC_MAX_SYMBOL_LEN
+ 1], module
[GFC_MAX_SYMBOL_LEN
+ 1];
3493 gfc_interface
*generic
= NULL
;
3498 while (peek_atom () != ATOM_RPAREN
)
3502 mio_internal_string (name
);
3503 mio_internal_string (module
);
3505 n
= number_use_names (name
, false);
3506 renamed
= n
? 1 : 0;
3509 for (i
= 1; i
<= n
; i
++)
3512 /* Decide if we need to load this one or not. */
3513 p
= find_use_name_n (name
, &i
, false);
3515 st
= find_symbol (gfc_current_ns
->sym_root
,
3516 name
, module_name
, 1);
3518 if (!p
|| gfc_find_symbol (p
, NULL
, 0, &sym
))
3520 /* Skip the specific names for these cases. */
3521 while (i
== 1 && parse_atom () != ATOM_RPAREN
);
3526 /* If the symbol exists already and is being USEd without being
3527 in an ONLY clause, do not load a new symtree(11.3.2). */
3528 if (!only_flag
&& st
)
3533 /* Make the symbol inaccessible if it has been added by a USE
3534 statement without an ONLY(11.3.2). */
3536 && !st
->n
.sym
->attr
.use_only
3537 && !st
->n
.sym
->attr
.use_rename
3538 && strcmp (st
->n
.sym
->module
, module_name
) == 0)
3541 gfc_delete_symtree (&gfc_current_ns
->sym_root
, name
);
3542 st
= gfc_get_unique_symtree (gfc_current_ns
);
3549 if (strcmp (st
->name
, p
) != 0)
3551 st
= gfc_new_symtree (&gfc_current_ns
->sym_root
, p
);
3557 /* Since we haven't found a valid generic interface, we had
3561 gfc_get_symbol (p
, NULL
, &sym
);
3562 sym
->name
= gfc_get_string (name
);
3563 sym
->module
= gfc_get_string (module_name
);
3564 sym
->attr
.flavor
= FL_PROCEDURE
;
3565 sym
->attr
.generic
= 1;
3566 sym
->attr
.use_assoc
= 1;
3571 /* Unless sym is a generic interface, this reference
3574 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, p
);
3578 if (st
&& !sym
->attr
.generic
3580 && strcmp(module
, sym
->module
))
3584 sym
->attr
.use_only
= only_flag
;
3585 sym
->attr
.use_rename
= renamed
;
3589 mio_interface_rest (&sym
->generic
);
3590 generic
= sym
->generic
;
3592 else if (!sym
->generic
)
3594 sym
->generic
= generic
;
3595 sym
->attr
.generic_copy
= 1;
3604 /* Load common blocks. */
3609 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
3614 while (peek_atom () != ATOM_RPAREN
)
3618 mio_internal_string (name
);
3620 p
= gfc_get_common (name
, 1);
3622 mio_symbol_ref (&p
->head
);
3623 mio_integer (&flags
);
3627 p
->threadprivate
= 1;
3630 /* Get whether this was a bind(c) common or not. */
3631 mio_integer (&p
->is_bind_c
);
3632 /* Get the binding label. */
3633 mio_internal_string (p
->binding_label
);
3642 /* Load equivalences. The flag in_load_equiv informs mio_expr_ref of this
3643 so that unused variables are not loaded and so that the expression can
3649 gfc_equiv
*head
, *tail
, *end
, *eq
;
3653 in_load_equiv
= true;
3655 end
= gfc_current_ns
->equiv
;
3656 while (end
!= NULL
&& end
->next
!= NULL
)
3659 while (peek_atom () != ATOM_RPAREN
) {
3663 while(peek_atom () != ATOM_RPAREN
)
3666 head
= tail
= gfc_get_equiv ();
3669 tail
->eq
= gfc_get_equiv ();
3673 mio_pool_string (&tail
->module
);
3674 mio_expr (&tail
->expr
);
3677 /* Unused equivalence members have a unique name. */
3679 for (eq
= head
; eq
; eq
= eq
->eq
)
3681 if (!check_unique_name (eq
->expr
->symtree
->name
))
3690 for (eq
= head
; eq
; eq
= head
)
3693 gfc_free_expr (eq
->expr
);
3699 gfc_current_ns
->equiv
= head
;
3710 in_load_equiv
= false;
3714 /* Recursive function to traverse the pointer_info tree and load a
3715 needed symbol. We return nonzero if we load a symbol and stop the
3716 traversal, because the act of loading can alter the tree. */
3719 load_needed (pointer_info
*p
)
3730 rv
|= load_needed (p
->left
);
3731 rv
|= load_needed (p
->right
);
3733 if (p
->type
!= P_SYMBOL
|| p
->u
.rsym
.state
!= NEEDED
)
3736 p
->u
.rsym
.state
= USED
;
3738 set_module_locus (&p
->u
.rsym
.where
);
3740 sym
= p
->u
.rsym
.sym
;
3743 q
= get_integer (p
->u
.rsym
.ns
);
3745 ns
= (gfc_namespace
*) q
->u
.pointer
;
3748 /* Create an interface namespace if necessary. These are
3749 the namespaces that hold the formal parameters of module
3752 ns
= gfc_get_namespace (NULL
, 0);
3753 associate_integer_pointer (q
, ns
);
3756 /* Use the module sym as 'proc_name' so that gfc_get_symbol_decl
3757 doesn't go pear-shaped if the symbol is used. */
3759 gfc_find_symbol (p
->u
.rsym
.module
, gfc_current_ns
,
3762 sym
= gfc_new_symbol (p
->u
.rsym
.true_name
, ns
);
3763 sym
->module
= gfc_get_string (p
->u
.rsym
.module
);
3764 strcpy (sym
->binding_label
, p
->u
.rsym
.binding_label
);
3766 associate_integer_pointer (p
, sym
);
3770 sym
->attr
.use_assoc
= 1;
3772 sym
->attr
.use_only
= 1;
3773 if (p
->u
.rsym
.renamed
)
3774 sym
->attr
.use_rename
= 1;
3780 /* Recursive function for cleaning up things after a module has been read. */
3783 read_cleanup (pointer_info
*p
)
3791 read_cleanup (p
->left
);
3792 read_cleanup (p
->right
);
3794 if (p
->type
== P_SYMBOL
&& p
->u
.rsym
.state
== USED
&& !p
->u
.rsym
.referenced
)
3796 /* Add hidden symbols to the symtree. */
3797 q
= get_integer (p
->u
.rsym
.ns
);
3798 st
= gfc_get_unique_symtree ((gfc_namespace
*) q
->u
.pointer
);
3800 st
->n
.sym
= p
->u
.rsym
.sym
;
3803 /* Fixup any symtree references. */
3804 p
->u
.rsym
.symtree
= st
;
3805 resolve_fixups (p
->u
.rsym
.stfixup
, st
);
3806 p
->u
.rsym
.stfixup
= NULL
;
3809 /* Free unused symbols. */
3810 if (p
->type
== P_SYMBOL
&& p
->u
.rsym
.state
== UNUSED
)
3811 gfc_free_symbol (p
->u
.rsym
.sym
);
3815 /* Read a module file. */
3820 module_locus operator_interfaces
, user_operators
;
3822 char name
[GFC_MAX_SYMBOL_LEN
+ 1];
3824 int ambiguous
, j
, nuse
, symbol
;
3825 pointer_info
*info
, *q
;
3830 get_module_locus (&operator_interfaces
); /* Skip these for now. */
3833 get_module_locus (&user_operators
);
3837 /* Skip commons and equivalences for now. */
3843 /* Create the fixup nodes for all the symbols. */
3845 while (peek_atom () != ATOM_RPAREN
)
3847 require_atom (ATOM_INTEGER
);
3848 info
= get_integer (atom_int
);
3850 info
->type
= P_SYMBOL
;
3851 info
->u
.rsym
.state
= UNUSED
;
3853 mio_internal_string (info
->u
.rsym
.true_name
);
3854 mio_internal_string (info
->u
.rsym
.module
);
3855 mio_internal_string (info
->u
.rsym
.binding_label
);
3858 require_atom (ATOM_INTEGER
);
3859 info
->u
.rsym
.ns
= atom_int
;
3861 get_module_locus (&info
->u
.rsym
.where
);
3864 /* See if the symbol has already been loaded by a previous module.
3865 If so, we reference the existing symbol and prevent it from
3866 being loaded again. This should not happen if the symbol being
3867 read is an index for an assumed shape dummy array (ns != 1). */
3869 sym
= find_true_name (info
->u
.rsym
.true_name
, info
->u
.rsym
.module
);
3872 || (sym
->attr
.flavor
== FL_VARIABLE
&& info
->u
.rsym
.ns
!=1))
3875 info
->u
.rsym
.state
= USED
;
3876 info
->u
.rsym
.sym
= sym
;
3878 /* Some symbols do not have a namespace (eg. formal arguments),
3879 so the automatic "unique symtree" mechanism must be suppressed
3880 by marking them as referenced. */
3881 q
= get_integer (info
->u
.rsym
.ns
);
3882 if (q
->u
.pointer
== NULL
)
3884 info
->u
.rsym
.referenced
= 1;
3888 /* If possible recycle the symtree that references the symbol.
3889 If a symtree is not found and the module does not import one,
3890 a unique-name symtree is found by read_cleanup. */
3891 st
= find_symtree_for_symbol (gfc_current_ns
->sym_root
, sym
);
3894 info
->u
.rsym
.symtree
= st
;
3895 info
->u
.rsym
.referenced
= 1;
3901 /* Parse the symtree lists. This lets us mark which symbols need to
3902 be loaded. Renaming is also done at this point by replacing the
3907 while (peek_atom () != ATOM_RPAREN
)
3909 mio_internal_string (name
);
3910 mio_integer (&ambiguous
);
3911 mio_integer (&symbol
);
3913 info
= get_integer (symbol
);
3915 /* See how many use names there are. If none, go through the start
3916 of the loop at least once. */
3917 nuse
= number_use_names (name
, false);
3918 info
->u
.rsym
.renamed
= nuse
? 1 : 0;
3923 for (j
= 1; j
<= nuse
; j
++)
3925 /* Get the jth local name for this symbol. */
3926 p
= find_use_name_n (name
, &j
, false);
3928 if (p
== NULL
&& strcmp (name
, module_name
) == 0)
3931 /* Skip symtree nodes not in an ONLY clause, unless there
3932 is an existing symtree loaded from another USE statement. */
3935 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
3937 info
->u
.rsym
.symtree
= st
;
3941 /* If a symbol of the same name and module exists already,
3942 this symbol, which is not in an ONLY clause, must not be
3943 added to the namespace(11.3.2). Note that find_symbol
3944 only returns the first occurrence that it finds. */
3945 if (!only_flag
&& !info
->u
.rsym
.renamed
3946 && strcmp (name
, module_name
) != 0
3947 && find_symbol (gfc_current_ns
->sym_root
, name
,
3951 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, p
);
3955 /* Check for ambiguous symbols. */
3956 if (st
->n
.sym
!= info
->u
.rsym
.sym
)
3958 info
->u
.rsym
.symtree
= st
;
3962 st
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
3964 /* Delete the symtree if the symbol has been added by a USE
3965 statement without an ONLY(11.3.2). Remember that the rsym
3966 will be the same as the symbol found in the symtree, for
3968 if (st
&& (only_flag
|| info
->u
.rsym
.renamed
)
3969 && !st
->n
.sym
->attr
.use_only
3970 && !st
->n
.sym
->attr
.use_rename
3971 && info
->u
.rsym
.sym
== st
->n
.sym
)
3972 gfc_delete_symtree (&gfc_current_ns
->sym_root
, name
);
3974 /* Create a symtree node in the current namespace for this
3976 st
= check_unique_name (p
)
3977 ? gfc_get_unique_symtree (gfc_current_ns
)
3978 : gfc_new_symtree (&gfc_current_ns
->sym_root
, p
);
3979 st
->ambiguous
= ambiguous
;
3981 sym
= info
->u
.rsym
.sym
;
3983 /* Create a symbol node if it doesn't already exist. */
3986 info
->u
.rsym
.sym
= gfc_new_symbol (info
->u
.rsym
.true_name
,
3988 sym
= info
->u
.rsym
.sym
;
3989 sym
->module
= gfc_get_string (info
->u
.rsym
.module
);
3991 /* TODO: hmm, can we test this? Do we know it will be
3992 initialized to zeros? */
3993 if (info
->u
.rsym
.binding_label
[0] != '\0')
3994 strcpy (sym
->binding_label
, info
->u
.rsym
.binding_label
);
4000 if (strcmp (name
, p
) != 0)
4001 sym
->attr
.use_rename
= 1;
4003 /* Store the symtree pointing to this symbol. */
4004 info
->u
.rsym
.symtree
= st
;
4006 if (info
->u
.rsym
.state
== UNUSED
)
4007 info
->u
.rsym
.state
= NEEDED
;
4008 info
->u
.rsym
.referenced
= 1;
4015 /* Load intrinsic operator interfaces. */
4016 set_module_locus (&operator_interfaces
);
4019 for (i
= GFC_INTRINSIC_BEGIN
; i
!= GFC_INTRINSIC_END
; i
++)
4021 if (i
== INTRINSIC_USER
)
4026 u
= find_use_operator (i
);
4037 mio_interface (&gfc_current_ns
->op
[i
]);
4042 /* Load generic and user operator interfaces. These must follow the
4043 loading of symtree because otherwise symbols can be marked as
4046 set_module_locus (&user_operators
);
4048 load_operator_interfaces ();
4049 load_generic_interfaces ();
4054 /* At this point, we read those symbols that are needed but haven't
4055 been loaded yet. If one symbol requires another, the other gets
4056 marked as NEEDED if its previous state was UNUSED. */
4058 while (load_needed (pi_root
));
4060 /* Make sure all elements of the rename-list were found in the module. */
4062 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4067 if (u
->op
== INTRINSIC_NONE
)
4069 gfc_error ("Symbol '%s' referenced at %L not found in module '%s'",
4070 u
->use_name
, &u
->where
, module_name
);
4074 if (u
->op
== INTRINSIC_USER
)
4076 gfc_error ("User operator '%s' referenced at %L not found "
4077 "in module '%s'", u
->use_name
, &u
->where
, module_name
);
4081 gfc_error ("Intrinsic operator '%s' referenced at %L not found "
4082 "in module '%s'", gfc_op2string (u
->op
), &u
->where
,
4086 gfc_check_interfaces (gfc_current_ns
);
4088 /* Clean up symbol nodes that were never loaded, create references
4089 to hidden symbols. */
4091 read_cleanup (pi_root
);
4095 /* Given an access type that is specific to an entity and the default
4096 access, return nonzero if the entity is publicly accessible. If the
4097 element is declared as PUBLIC, then it is public; if declared
4098 PRIVATE, then private, and otherwise it is public unless the default
4099 access in this context has been declared PRIVATE. */
4102 gfc_check_access (gfc_access specific_access
, gfc_access default_access
)
4104 if (specific_access
== ACCESS_PUBLIC
)
4106 if (specific_access
== ACCESS_PRIVATE
)
4109 if (gfc_option
.flag_module_private
)
4110 return default_access
== ACCESS_PUBLIC
;
4112 return default_access
!= ACCESS_PRIVATE
;
4116 /* A structure to remember which commons we've already written. */
4118 struct written_common
4120 BBT_HEADER(written_common
);
4121 const char *name
, *label
;
4124 static struct written_common
*written_commons
= NULL
;
4126 /* Comparison function used for balancing the binary tree. */
4129 compare_written_commons (void *a1
, void *b1
)
4131 const char *aname
= ((struct written_common
*) a1
)->name
;
4132 const char *alabel
= ((struct written_common
*) a1
)->label
;
4133 const char *bname
= ((struct written_common
*) b1
)->name
;
4134 const char *blabel
= ((struct written_common
*) b1
)->label
;
4135 int c
= strcmp (aname
, bname
);
4137 return (c
!= 0 ? c
: strcmp (alabel
, blabel
));
4140 /* Free a list of written commons. */
4143 free_written_common (struct written_common
*w
)
4149 free_written_common (w
->left
);
4151 free_written_common (w
->right
);
4156 /* Write a common block to the module -- recursive helper function. */
4159 write_common_0 (gfc_symtree
*st
)
4165 struct written_common
*w
;
4166 bool write_me
= true;
4171 write_common_0 (st
->left
);
4173 /* We will write out the binding label, or the name if no label given. */
4174 name
= st
->n
.common
->name
;
4176 label
= p
->is_bind_c
? p
->binding_label
: p
->name
;
4178 /* Check if we've already output this common. */
4179 w
= written_commons
;
4182 int c
= strcmp (name
, w
->name
);
4183 c
= (c
!= 0 ? c
: strcmp (label
, w
->label
));
4187 w
= (c
< 0) ? w
->left
: w
->right
;
4192 /* Write the common to the module. */
4194 mio_pool_string (&name
);
4196 mio_symbol_ref (&p
->head
);
4197 flags
= p
->saved
? 1 : 0;
4198 if (p
->threadprivate
)
4200 mio_integer (&flags
);
4202 /* Write out whether the common block is bind(c) or not. */
4203 mio_integer (&(p
->is_bind_c
));
4205 mio_pool_string (&label
);
4208 /* Record that we have written this common. */
4209 w
= XCNEW (struct written_common
);
4212 gfc_insert_bbt (&written_commons
, w
, compare_written_commons
);
4215 write_common_0 (st
->right
);
4219 /* Write a common, by initializing the list of written commons, calling
4220 the recursive function write_common_0() and cleaning up afterwards. */
4223 write_common (gfc_symtree
*st
)
4225 written_commons
= NULL
;
4226 write_common_0 (st
);
4227 free_written_common (written_commons
);
4228 written_commons
= NULL
;
4232 /* Write the blank common block to the module. */
4235 write_blank_common (void)
4237 const char * name
= BLANK_COMMON_NAME
;
4239 /* TODO: Blank commons are not bind(c). The F2003 standard probably says
4240 this, but it hasn't been checked. Just making it so for now. */
4243 if (gfc_current_ns
->blank_common
.head
== NULL
)
4248 mio_pool_string (&name
);
4250 mio_symbol_ref (&gfc_current_ns
->blank_common
.head
);
4251 saved
= gfc_current_ns
->blank_common
.saved
;
4252 mio_integer (&saved
);
4254 /* Write out whether the common block is bind(c) or not. */
4255 mio_integer (&is_bind_c
);
4257 /* Write out the binding label, which is BLANK_COMMON_NAME, though
4258 it doesn't matter because the label isn't used. */
4259 mio_pool_string (&name
);
4265 /* Write equivalences to the module. */
4274 for (eq
= gfc_current_ns
->equiv
; eq
; eq
= eq
->next
)
4278 for (e
= eq
; e
; e
= e
->eq
)
4280 if (e
->module
== NULL
)
4281 e
->module
= gfc_get_string ("%s.eq.%d", module_name
, num
);
4282 mio_allocated_string (e
->module
);
4283 mio_expr (&e
->expr
);
4292 /* Write a symbol to the module. */
4295 write_symbol (int n
, gfc_symbol
*sym
)
4299 if (sym
->attr
.flavor
== FL_UNKNOWN
|| sym
->attr
.flavor
== FL_LABEL
)
4300 gfc_internal_error ("write_symbol(): bad module symbol '%s'", sym
->name
);
4303 mio_pool_string (&sym
->name
);
4305 mio_pool_string (&sym
->module
);
4306 if (sym
->attr
.is_bind_c
|| sym
->attr
.is_iso_c
)
4308 label
= sym
->binding_label
;
4309 mio_pool_string (&label
);
4312 mio_pool_string (&sym
->name
);
4314 mio_pointer_ref (&sym
->ns
);
4321 /* Recursive traversal function to write the initial set of symbols to
4322 the module. We check to see if the symbol should be written
4323 according to the access specification. */
4326 write_symbol0 (gfc_symtree
*st
)
4330 bool dont_write
= false;
4335 write_symbol0 (st
->left
);
4338 if (sym
->module
== NULL
)
4339 sym
->module
= gfc_get_string (module_name
);
4341 if (sym
->attr
.flavor
== FL_PROCEDURE
&& sym
->attr
.generic
4342 && !sym
->attr
.subroutine
&& !sym
->attr
.function
)
4345 if (!gfc_check_access (sym
->attr
.access
, sym
->ns
->default_access
))
4350 p
= get_pointer (sym
);
4351 if (p
->type
== P_UNKNOWN
)
4354 if (p
->u
.wsym
.state
!= WRITTEN
)
4356 write_symbol (p
->integer
, sym
);
4357 p
->u
.wsym
.state
= WRITTEN
;
4361 write_symbol0 (st
->right
);
4365 /* Recursive traversal function to write the secondary set of symbols
4366 to the module file. These are symbols that were not public yet are
4367 needed by the public symbols or another dependent symbol. The act
4368 of writing a symbol can modify the pointer_info tree, so we cease
4369 traversal if we find a symbol to write. We return nonzero if a
4370 symbol was written and pass that information upwards. */
4373 write_symbol1 (pointer_info
*p
)
4380 result
= write_symbol1 (p
->left
);
4382 if (!(p
->type
!= P_SYMBOL
|| p
->u
.wsym
.state
!= NEEDS_WRITE
))
4384 p
->u
.wsym
.state
= WRITTEN
;
4385 write_symbol (p
->integer
, p
->u
.wsym
.sym
);
4389 result
|= write_symbol1 (p
->right
);
4394 /* Write operator interfaces associated with a symbol. */
4397 write_operator (gfc_user_op
*uop
)
4399 static char nullstring
[] = "";
4400 const char *p
= nullstring
;
4403 || !gfc_check_access (uop
->access
, uop
->ns
->default_access
))
4406 mio_symbol_interface (&uop
->name
, &p
, &uop
->op
);
4410 /* Write generic interfaces from the namespace sym_root. */
4413 write_generic (gfc_symtree
*st
)
4420 write_generic (st
->left
);
4421 write_generic (st
->right
);
4424 if (!sym
|| check_unique_name (st
->name
))
4427 if (sym
->generic
== NULL
4428 || !gfc_check_access (sym
->attr
.access
, sym
->ns
->default_access
))
4431 if (sym
->module
== NULL
)
4432 sym
->module
= gfc_get_string (module_name
);
4434 mio_symbol_interface (&st
->name
, &sym
->module
, &sym
->generic
);
4439 write_symtree (gfc_symtree
*st
)
4445 if (!gfc_check_access (sym
->attr
.access
, sym
->ns
->default_access
)
4446 || (sym
->attr
.flavor
== FL_PROCEDURE
&& sym
->attr
.generic
4447 && !sym
->attr
.subroutine
&& !sym
->attr
.function
))
4450 if (check_unique_name (st
->name
))
4453 p
= find_pointer (sym
);
4455 gfc_internal_error ("write_symtree(): Symbol not written");
4457 mio_pool_string (&st
->name
);
4458 mio_integer (&st
->ambiguous
);
4459 mio_integer (&p
->integer
);
4468 /* Write the operator interfaces. */
4471 for (i
= GFC_INTRINSIC_BEGIN
; i
!= GFC_INTRINSIC_END
; i
++)
4473 if (i
== INTRINSIC_USER
)
4476 mio_interface (gfc_check_access (gfc_current_ns
->operator_access
[i
],
4477 gfc_current_ns
->default_access
)
4478 ? &gfc_current_ns
->op
[i
] : NULL
);
4486 gfc_traverse_user_op (gfc_current_ns
, write_operator
);
4492 write_generic (gfc_current_ns
->sym_root
);
4498 write_blank_common ();
4499 write_common (gfc_current_ns
->common_root
);
4510 /* Write symbol information. First we traverse all symbols in the
4511 primary namespace, writing those that need to be written.
4512 Sometimes writing one symbol will cause another to need to be
4513 written. A list of these symbols ends up on the write stack, and
4514 we end by popping the bottom of the stack and writing the symbol
4515 until the stack is empty. */
4519 write_symbol0 (gfc_current_ns
->sym_root
);
4520 while (write_symbol1 (pi_root
))
4529 gfc_traverse_symtree (gfc_current_ns
->sym_root
, write_symtree
);
4534 /* Read a MD5 sum from the header of a module file. If the file cannot
4535 be opened, or we have any other error, we return -1. */
4538 read_md5_from_module_file (const char * filename
, unsigned char md5
[16])
4544 /* Open the file. */
4545 if ((file
= fopen (filename
, "r")) == NULL
)
4548 /* Read two lines. */
4549 if (fgets (buf
, sizeof (buf
) - 1, file
) == NULL
4550 || fgets (buf
, sizeof (buf
) - 1, file
) == NULL
)
4556 /* Close the file. */
4559 /* If the header is not what we expect, or is too short, bail out. */
4560 if (strncmp (buf
, "MD5:", 4) != 0 || strlen (buf
) < 4 + 16)
4563 /* Now, we have a real MD5, read it into the array. */
4564 for (n
= 0; n
< 16; n
++)
4568 if (sscanf (&(buf
[4+2*n
]), "%02x", &x
) != 1)
4578 /* Given module, dump it to disk. If there was an error while
4579 processing the module, dump_flag will be set to zero and we delete
4580 the module file, even if it was already there. */
4583 gfc_dump_module (const char *name
, int dump_flag
)
4586 char *filename
, *filename_tmp
, *p
;
4589 unsigned char md5_new
[16], md5_old
[16];
4591 n
= strlen (name
) + strlen (MODULE_EXTENSION
) + 1;
4592 if (gfc_option
.module_dir
!= NULL
)
4594 n
+= strlen (gfc_option
.module_dir
);
4595 filename
= (char *) alloca (n
);
4596 strcpy (filename
, gfc_option
.module_dir
);
4597 strcat (filename
, name
);
4601 filename
= (char *) alloca (n
);
4602 strcpy (filename
, name
);
4604 strcat (filename
, MODULE_EXTENSION
);
4606 /* Name of the temporary file used to write the module. */
4607 filename_tmp
= (char *) alloca (n
+ 1);
4608 strcpy (filename_tmp
, filename
);
4609 strcat (filename_tmp
, "0");
4611 /* There was an error while processing the module. We delete the
4612 module file, even if it was already there. */
4619 /* Write the module to the temporary file. */
4620 module_fp
= fopen (filename_tmp
, "w");
4621 if (module_fp
== NULL
)
4622 gfc_fatal_error ("Can't open module file '%s' for writing at %C: %s",
4623 filename_tmp
, strerror (errno
));
4625 /* Write the header, including space reserved for the MD5 sum. */
4629 *strchr (p
, '\n') = '\0';
4631 fprintf (module_fp
, "GFORTRAN module created from %s on %s\nMD5:",
4632 gfc_source_file
, p
);
4633 fgetpos (module_fp
, &md5_pos
);
4634 fputs ("00000000000000000000000000000000 -- "
4635 "If you edit this, you'll get what you deserve.\n\n", module_fp
);
4637 /* Initialize the MD5 context that will be used for output. */
4638 md5_init_ctx (&ctx
);
4640 /* Write the module itself. */
4642 strcpy (module_name
, name
);
4648 free_pi_tree (pi_root
);
4653 /* Write the MD5 sum to the header of the module file. */
4654 md5_finish_ctx (&ctx
, md5_new
);
4655 fsetpos (module_fp
, &md5_pos
);
4656 for (n
= 0; n
< 16; n
++)
4657 fprintf (module_fp
, "%02x", md5_new
[n
]);
4659 if (fclose (module_fp
))
4660 gfc_fatal_error ("Error writing module file '%s' for writing: %s",
4661 filename_tmp
, strerror (errno
));
4663 /* Read the MD5 from the header of the old module file and compare. */
4664 if (read_md5_from_module_file (filename
, md5_old
) != 0
4665 || memcmp (md5_old
, md5_new
, sizeof (md5_old
)) != 0)
4667 /* Module file have changed, replace the old one. */
4669 rename (filename_tmp
, filename
);
4672 unlink (filename_tmp
);
4677 sort_iso_c_rename_list (void)
4679 gfc_use_rename
*tmp_list
= NULL
;
4680 gfc_use_rename
*curr
;
4681 gfc_use_rename
*kinds_used
[ISOCBINDING_NUMBER
] = {NULL
};
4685 for (curr
= gfc_rename_list
; curr
; curr
= curr
->next
)
4687 c_kind
= get_c_kind (curr
->use_name
, c_interop_kinds_table
);
4688 if (c_kind
== ISOCBINDING_INVALID
|| c_kind
== ISOCBINDING_LAST
)
4690 gfc_error ("Symbol '%s' referenced at %L does not exist in "
4691 "intrinsic module ISO_C_BINDING.", curr
->use_name
,
4695 /* Put it in the list. */
4696 kinds_used
[c_kind
] = curr
;
4699 /* Make a new (sorted) rename list. */
4701 while (i
< ISOCBINDING_NUMBER
&& kinds_used
[i
] == NULL
)
4704 if (i
< ISOCBINDING_NUMBER
)
4706 tmp_list
= kinds_used
[i
];
4710 for (; i
< ISOCBINDING_NUMBER
; i
++)
4711 if (kinds_used
[i
] != NULL
)
4713 curr
->next
= kinds_used
[i
];
4719 gfc_rename_list
= tmp_list
;
4723 /* Import the intrinsic ISO_C_BINDING module, generating symbols in
4724 the current namespace for all named constants, pointer types, and
4725 procedures in the module unless the only clause was used or a rename
4726 list was provided. */
4729 import_iso_c_binding_module (void)
4731 gfc_symbol
*mod_sym
= NULL
;
4732 gfc_symtree
*mod_symtree
= NULL
;
4733 const char *iso_c_module_name
= "__iso_c_binding";
4738 /* Look only in the current namespace. */
4739 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, iso_c_module_name
);
4741 if (mod_symtree
== NULL
)
4743 /* symtree doesn't already exist in current namespace. */
4744 gfc_get_sym_tree (iso_c_module_name
, gfc_current_ns
, &mod_symtree
);
4746 if (mod_symtree
!= NULL
)
4747 mod_sym
= mod_symtree
->n
.sym
;
4749 gfc_internal_error ("import_iso_c_binding_module(): Unable to "
4750 "create symbol for %s", iso_c_module_name
);
4752 mod_sym
->attr
.flavor
= FL_MODULE
;
4753 mod_sym
->attr
.intrinsic
= 1;
4754 mod_sym
->module
= gfc_get_string (iso_c_module_name
);
4755 mod_sym
->from_intmod
= INTMOD_ISO_C_BINDING
;
4758 /* Generate the symbols for the named constants representing
4759 the kinds for intrinsic data types. */
4762 /* Sort the rename list because there are dependencies between types
4763 and procedures (e.g., c_loc needs c_ptr). */
4764 sort_iso_c_rename_list ();
4766 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4768 i
= get_c_kind (u
->use_name
, c_interop_kinds_table
);
4770 if (i
== ISOCBINDING_INVALID
|| i
== ISOCBINDING_LAST
)
4772 gfc_error ("Symbol '%s' referenced at %L does not exist in "
4773 "intrinsic module ISO_C_BINDING.", u
->use_name
,
4778 generate_isocbinding_symbol (iso_c_module_name
, i
, u
->local_name
);
4783 for (i
= 0; i
< ISOCBINDING_NUMBER
; i
++)
4786 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4788 if (strcmp (c_interop_kinds_table
[i
].name
, u
->use_name
) == 0)
4790 local_name
= u
->local_name
;
4795 generate_isocbinding_symbol (iso_c_module_name
, i
, local_name
);
4798 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4803 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
4804 "module ISO_C_BINDING", u
->use_name
, &u
->where
);
4810 /* Add an integer named constant from a given module. */
4813 create_int_parameter (const char *name
, int value
, const char *modname
,
4814 intmod_id module
, int id
)
4816 gfc_symtree
*tmp_symtree
;
4819 tmp_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, name
);
4820 if (tmp_symtree
!= NULL
)
4822 if (strcmp (modname
, tmp_symtree
->n
.sym
->module
) == 0)
4825 gfc_error ("Symbol '%s' already declared", name
);
4828 gfc_get_sym_tree (name
, gfc_current_ns
, &tmp_symtree
);
4829 sym
= tmp_symtree
->n
.sym
;
4831 sym
->module
= gfc_get_string (modname
);
4832 sym
->attr
.flavor
= FL_PARAMETER
;
4833 sym
->ts
.type
= BT_INTEGER
;
4834 sym
->ts
.kind
= gfc_default_integer_kind
;
4835 sym
->value
= gfc_int_expr (value
);
4836 sym
->attr
.use_assoc
= 1;
4837 sym
->from_intmod
= module
;
4838 sym
->intmod_sym_id
= id
;
4842 /* USE the ISO_FORTRAN_ENV intrinsic module. */
4845 use_iso_fortran_env_module (void)
4847 static char mod
[] = "iso_fortran_env";
4848 const char *local_name
;
4850 gfc_symbol
*mod_sym
;
4851 gfc_symtree
*mod_symtree
;
4854 intmod_sym symbol
[] = {
4855 #define NAMED_INTCST(a,b,c,d) { a, b, 0, d },
4856 #include "iso-fortran-env.def"
4858 { ISOFORTRANENV_INVALID
, NULL
, -1234, 0 } };
4861 #define NAMED_INTCST(a,b,c,d) symbol[i++].value = c;
4862 #include "iso-fortran-env.def"
4865 /* Generate the symbol for the module itself. */
4866 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, mod
);
4867 if (mod_symtree
== NULL
)
4869 gfc_get_sym_tree (mod
, gfc_current_ns
, &mod_symtree
);
4870 gcc_assert (mod_symtree
);
4871 mod_sym
= mod_symtree
->n
.sym
;
4873 mod_sym
->attr
.flavor
= FL_MODULE
;
4874 mod_sym
->attr
.intrinsic
= 1;
4875 mod_sym
->module
= gfc_get_string (mod
);
4876 mod_sym
->from_intmod
= INTMOD_ISO_FORTRAN_ENV
;
4879 if (!mod_symtree
->n
.sym
->attr
.intrinsic
)
4880 gfc_error ("Use of intrinsic module '%s' at %C conflicts with "
4881 "non-intrinsic module name used previously", mod
);
4883 /* Generate the symbols for the module integer named constants. */
4885 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4887 for (i
= 0; symbol
[i
].name
; i
++)
4888 if (strcmp (symbol
[i
].name
, u
->use_name
) == 0)
4891 if (symbol
[i
].name
== NULL
)
4893 gfc_error ("Symbol '%s' referenced at %L does not exist in "
4894 "intrinsic module ISO_FORTRAN_ENV", u
->use_name
,
4899 if ((gfc_option
.flag_default_integer
|| gfc_option
.flag_default_real
)
4900 && symbol
[i
].id
== ISOFORTRANENV_NUMERIC_STORAGE_SIZE
)
4901 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named constant "
4902 "from intrinsic module ISO_FORTRAN_ENV at %L is "
4903 "incompatible with option %s", &u
->where
,
4904 gfc_option
.flag_default_integer
4905 ? "-fdefault-integer-8" : "-fdefault-real-8");
4907 create_int_parameter (u
->local_name
[0] ? u
->local_name
4909 symbol
[i
].value
, mod
, INTMOD_ISO_FORTRAN_ENV
,
4914 for (i
= 0; symbol
[i
].name
; i
++)
4917 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4919 if (strcmp (symbol
[i
].name
, u
->use_name
) == 0)
4921 local_name
= u
->local_name
;
4927 if ((gfc_option
.flag_default_integer
|| gfc_option
.flag_default_real
)
4928 && symbol
[i
].id
== ISOFORTRANENV_NUMERIC_STORAGE_SIZE
)
4929 gfc_warning_now ("Use of the NUMERIC_STORAGE_SIZE named constant "
4930 "from intrinsic module ISO_FORTRAN_ENV at %C is "
4931 "incompatible with option %s",
4932 gfc_option
.flag_default_integer
4933 ? "-fdefault-integer-8" : "-fdefault-real-8");
4935 create_int_parameter (local_name
? local_name
: symbol
[i
].name
,
4936 symbol
[i
].value
, mod
, INTMOD_ISO_FORTRAN_ENV
,
4940 for (u
= gfc_rename_list
; u
; u
= u
->next
)
4945 gfc_error ("Symbol '%s' referenced at %L not found in intrinsic "
4946 "module ISO_FORTRAN_ENV", u
->use_name
, &u
->where
);
4952 /* Process a USE directive. */
4955 gfc_use_module (void)
4960 gfc_symtree
*mod_symtree
;
4962 filename
= (char *) alloca (strlen (module_name
) + strlen (MODULE_EXTENSION
)
4964 strcpy (filename
, module_name
);
4965 strcat (filename
, MODULE_EXTENSION
);
4967 /* First, try to find an non-intrinsic module, unless the USE statement
4968 specified that the module is intrinsic. */
4971 module_fp
= gfc_open_included_file (filename
, true, true);
4973 /* Then, see if it's an intrinsic one, unless the USE statement
4974 specified that the module is non-intrinsic. */
4975 if (module_fp
== NULL
&& !specified_nonint
)
4977 if (strcmp (module_name
, "iso_fortran_env") == 0
4978 && gfc_notify_std (GFC_STD_F2003
, "Fortran 2003: ISO_FORTRAN_ENV "
4979 "intrinsic module at %C") != FAILURE
)
4981 use_iso_fortran_env_module ();
4985 if (strcmp (module_name
, "iso_c_binding") == 0
4986 && gfc_notify_std (GFC_STD_F2003
, "Fortran 2003: "
4987 "ISO_C_BINDING module at %C") != FAILURE
)
4989 import_iso_c_binding_module();
4993 module_fp
= gfc_open_intrinsic_module (filename
);
4995 if (module_fp
== NULL
&& specified_int
)
4996 gfc_fatal_error ("Can't find an intrinsic module named '%s' at %C",
5000 if (module_fp
== NULL
)
5001 gfc_fatal_error ("Can't open module file '%s' for reading at %C: %s",
5002 filename
, strerror (errno
));
5004 /* Check that we haven't already USEd an intrinsic module with the
5007 mod_symtree
= gfc_find_symtree (gfc_current_ns
->sym_root
, module_name
);
5008 if (mod_symtree
&& mod_symtree
->n
.sym
->attr
.intrinsic
)
5009 gfc_error ("Use of non-intrinsic module '%s' at %C conflicts with "
5010 "intrinsic module name used previously", module_name
);
5017 /* Skip the first two lines of the module, after checking that this is
5018 a gfortran module file. */
5024 bad_module ("Unexpected end of module");
5027 if ((start
== 1 && strcmp (atom_name
, "GFORTRAN") != 0)
5028 || (start
== 2 && strcmp (atom_name
, " module") != 0))
5029 gfc_fatal_error ("File '%s' opened at %C is not a GFORTRAN module "
5036 /* Make sure we're not reading the same module that we may be building. */
5037 for (p
= gfc_state_stack
; p
; p
= p
->previous
)
5038 if (p
->state
== COMP_MODULE
&& strcmp (p
->sym
->name
, module_name
) == 0)
5039 gfc_fatal_error ("Can't USE the same module we're building!");
5042 init_true_name_tree ();
5046 free_true_name (true_name_root
);
5047 true_name_root
= NULL
;
5049 free_pi_tree (pi_root
);
5057 gfc_module_init_2 (void)
5059 last_atom
= ATOM_LPAREN
;
5064 gfc_module_done_2 (void)