1 /* Code to maintain a C++ template repository.
2 Copyright (C) 1995 Free Software Foundation, Inc.
3 Contributed by Jason Merrill (jason@cygnus.com)
5 This file is part of GNU CC.
7 GNU CC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
12 GNU CC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
17 You should have received a copy of the GNU General Public License
18 along with GNU CC; see the file COPYING. If not, write to
19 the Free Software Foundation, 59 Temple Place - Suite 330,
20 Boston, MA 02111-1307, USA. */
22 /* My strategy here is as follows:
24 Everything should be emitted in a translation unit where it is used.
25 The results of the automatic process should be easily reproducible with
35 extern char * rindex ();
36 extern char * getenv ();
37 extern char * getpwd ();
39 static tree pending_repo
;
40 static tree original_repo
;
41 static char *repo_name
;
42 static FILE *repo_file
;
44 static char *old_args
, *old_dir
, *old_main
;
46 extern int flag_use_repository
;
47 extern int errorcount
, sorrycount
;
48 extern struct obstack temporary_obstack
;
49 extern struct obstack permanent_obstack
;
51 #define IDENTIFIER_REPO_USED(NODE) (TREE_LANG_FLAG_3 (NODE))
52 #define IDENTIFIER_REPO_CHOSEN(NODE) (TREE_LANG_FLAG_4 (NODE))
55 /* Record the flags used to compile this translation unit. */
58 repo_compile_flags (argc
, argv
)
64 /* If this template has not been seen before, add a note to the repository
65 saying where the declaration was. This may be used to find the
66 definition at link time. */
69 repo_template_declared (t
)
73 /* Note where the definition of a template lives so that instantiations can
74 be generated later. */
77 repo_template_defined (t
)
81 /* Note where the definition of a class lives to that template
82 instantiations can use it. */
85 repo_class_defined (t
)
94 if (TREE_CODE_CLASS (TREE_CODE (t
)) == 't')
96 t
= TYPE_BINFO_VTABLE (t
);
100 return DECL_ASSEMBLER_NAME (t
);
103 /* Note that a template has been used. If we can see the definition, offer
107 repo_template_used (t
)
112 if (! flag_use_repository
)
115 id
= repo_get_id (t
);
119 if (TREE_CODE_CLASS (TREE_CODE (t
)) == 't')
121 if (IDENTIFIER_REPO_CHOSEN (id
))
122 mark_class_instantiated (t
, 0);
124 else if (TREE_CODE_CLASS (TREE_CODE (t
)) == 'd')
126 if (IDENTIFIER_REPO_CHOSEN (id
))
127 mark_decl_instantiated (t
, 0);
130 my_friendly_abort (1);
132 if (! IDENTIFIER_REPO_USED (id
))
134 IDENTIFIER_REPO_USED (id
) = 1;
135 pending_repo
= perm_tree_cons (NULL_TREE
, id
, pending_repo
);
140 /* Note that the vtable for a class has been used, and offer to emit it. */
146 if (! flag_use_repository
)
149 pending_repo
= perm_tree_cons (NULL_TREE
, t
, pending_repo
);
152 /* Note that an inline with external linkage has been used, and offer to
156 repo_inline_used (fn
)
159 if (! flag_use_repository
)
162 /* Member functions of polymorphic classes go with their vtables. */
163 if (DECL_FUNCTION_MEMBER_P (fn
) && TYPE_VIRTUAL_P (DECL_CLASS_CONTEXT (fn
)))
165 repo_vtable_used (DECL_CLASS_CONTEXT (fn
));
169 pending_repo
= perm_tree_cons (NULL_TREE
, fn
, pending_repo
);
172 /* Note that a particular typeinfo node has been used, and offer to
183 repo_template_instantiated (t
, extern_p
)
189 tree id
= repo_get_id (t
);
191 IDENTIFIER_REPO_CHOSEN (id
) = 1;
200 return obstack_copy0 (&temporary_obstack
, s
, len
);
203 /* Parse a reasonable subset of shell quoting syntax. */
220 obstack_1grow (&temporary_obstack
, c
);
221 else if (! inside
&& c
== ' ')
223 else if (! inside
&& c
== '\\')
228 obstack_1grow (&temporary_obstack
, c
);
231 obstack_1grow (&temporary_obstack
, '\0');
233 return obstack_finish (&temporary_obstack
);
237 get_base_filename (filename
)
240 char *p
= getenv ("COLLECT_GCC_OPTIONS");
246 char *q
= extract_string (&p
);
248 if (strcmp (q
, "-o") == 0)
249 output
= extract_string (&p
);
250 else if (strcmp (q
, "-c") == 0)
254 if (compiling
&& output
)
257 if (p
&& ! compiling
)
259 warning ("-frepo must be used with -c");
260 flag_use_repository
= 0;
264 p
= rindex (filename
, '/');
272 open_repo_file (filename
)
276 char *s
= get_base_filename (filename
);
288 obstack_grow (&permanent_obstack
, s
, p
- s
);
289 repo_name
= obstack_copy0 (&permanent_obstack
, ".rpo", 4);
291 repo_file
= fopen (repo_name
, "r");
299 while ((c
= getc (stream
)) != EOF
&& c
!= '\n')
300 obstack_1grow (&temporary_obstack
, c
);
301 if (obstack_object_size (&temporary_obstack
) == 0)
303 obstack_1grow (&temporary_obstack
, '\0');
304 return obstack_finish (&temporary_obstack
);
313 if (! flag_use_repository
)
316 open_repo_file (filename
);
321 while (buf
= afgets (repo_file
))
326 old_args
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
330 old_dir
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
334 old_main
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
340 tree id
= get_identifier (buf
+ 2);
345 IDENTIFIER_REPO_CHOSEN (id
) = 1;
346 orig
= integer_one_node
;
351 original_repo
= perm_tree_cons (orig
, id
, original_repo
);
355 error ("mysterious repository information in %s", repo_name
);
357 obstack_free (&temporary_obstack
, buf
);
362 reopen_repo_file_for_write ()
366 repo_file
= fopen (repo_name
, "w");
370 error ("can't create repository information file `%s'", repo_name
);
371 flag_use_repository
= 0;
375 /* Emit any pending repos. */
382 int repo_changed
= 0;
385 if (! flag_use_repository
)
388 /* Do we have to write out a new info file? */
390 /* Are there any old templates that aren't used any longer or that are
393 for (t
= original_repo
; t
; t
= TREE_CHAIN (t
))
395 if (! IDENTIFIER_REPO_USED (TREE_VALUE (t
))
396 || (! TREE_PURPOSE (t
) && IDENTIFIER_REPO_CHOSEN (TREE_VALUE (t
))))
401 IDENTIFIER_REPO_USED (TREE_VALUE (t
)) = 0;
404 /* Are there any templates that are newly used? */
407 for (t
= pending_repo
; t
; t
= TREE_CHAIN (t
))
409 if (IDENTIFIER_REPO_USED (TREE_VALUE (t
)))
417 args
= getenv ("COLLECT_GCC_OPTIONS");
419 if (! repo_changed
&& pending_repo
)
420 if (strcmp (old_main
, main_input_filename
) != 0
421 || strcmp (old_dir
, dir
) != 0
422 || (args
== NULL
) != (old_args
== NULL
)
423 || strcmp (old_args
, args
) != 0)
426 if (! repo_changed
|| errorcount
|| sorrycount
)
429 reopen_repo_file_for_write ();
434 fprintf (repo_file
, "M %s\n", main_input_filename
);
435 fprintf (repo_file
, "D %s\n", dir
);
437 fprintf (repo_file
, "A %s\n", args
);
439 for (t
= pending_repo
; t
; t
= TREE_CHAIN (t
))
441 tree val
= TREE_VALUE (t
);
442 char type
= IDENTIFIER_REPO_CHOSEN (val
) ? 'C' : 'O';
444 fprintf (repo_file
, "%c %s\n", type
, IDENTIFIER_POINTER (val
));