1 /* Code to maintain a C++ template repository.
2 Copyright (C) 1995, 1997 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
36 extern char *getpwd
PROTO((void));
38 static tree repo_get_id
PROTO((tree
));
39 static char *extract_string
PROTO((char **));
40 static char *get_base_filename
PROTO((char *));
41 static void open_repo_file
PROTO((char *));
42 static char *afgets
PROTO((FILE *));
43 static void reopen_repo_file_for_write
PROTO((void));
45 static tree pending_repo
;
46 static tree original_repo
;
47 static char *repo_name
;
48 static FILE *repo_file
;
50 static char *old_args
, *old_dir
, *old_main
;
52 extern int flag_use_repository
;
53 extern int errorcount
, sorrycount
;
54 extern struct obstack temporary_obstack
;
55 extern struct obstack permanent_obstack
;
57 #define IDENTIFIER_REPO_USED(NODE) (TREE_LANG_FLAG_3 (NODE))
58 #define IDENTIFIER_REPO_CHOSEN(NODE) (TREE_LANG_FLAG_4 (NODE))
61 /* Record the flags used to compile this translation unit. */
64 repo_compile_flags (argc
, argv
)
70 /* If this template has not been seen before, add a note to the repository
71 saying where the declaration was. This may be used to find the
72 definition at link time. */
75 repo_template_declared (t
)
79 /* Note where the definition of a template lives so that instantiations can
80 be generated later. */
83 repo_template_defined (t
)
87 /* Note where the definition of a class lives to that template
88 instantiations can use it. */
91 repo_class_defined (t
)
100 if (TREE_CODE_CLASS (TREE_CODE (t
)) == 't')
102 t
= TYPE_BINFO_VTABLE (t
);
106 return DECL_ASSEMBLER_NAME (t
);
109 /* Note that a template has been used. If we can see the definition, offer
113 repo_template_used (t
)
118 if (! flag_use_repository
)
121 id
= repo_get_id (t
);
125 if (TREE_CODE_CLASS (TREE_CODE (t
)) == 't')
127 if (IDENTIFIER_REPO_CHOSEN (id
))
128 mark_class_instantiated (t
, 0);
130 else if (TREE_CODE_CLASS (TREE_CODE (t
)) == 'd')
132 if (IDENTIFIER_REPO_CHOSEN (id
))
133 mark_decl_instantiated (t
, 0);
136 my_friendly_abort (1);
138 if (! IDENTIFIER_REPO_USED (id
))
140 IDENTIFIER_REPO_USED (id
) = 1;
141 pending_repo
= perm_tree_cons (NULL_TREE
, id
, pending_repo
);
146 /* Note that the vtable for a class has been used, and offer to emit it. */
152 if (! flag_use_repository
)
155 pending_repo
= perm_tree_cons (NULL_TREE
, t
, pending_repo
);
158 /* Note that an inline with external linkage has been used, and offer to
162 repo_inline_used (fn
)
165 if (! flag_use_repository
)
168 /* Member functions of polymorphic classes go with their vtables. */
169 if (DECL_FUNCTION_MEMBER_P (fn
) && TYPE_VIRTUAL_P (DECL_CLASS_CONTEXT (fn
)))
171 repo_vtable_used (DECL_CLASS_CONTEXT (fn
));
175 pending_repo
= perm_tree_cons (NULL_TREE
, fn
, pending_repo
);
178 /* Note that a particular typeinfo node has been used, and offer to
189 repo_template_instantiated (t
, extern_p
)
195 tree id
= repo_get_id (t
);
197 IDENTIFIER_REPO_CHOSEN (id
) = 1;
201 /* Parse a reasonable subset of shell quoting syntax. */
218 obstack_1grow (&temporary_obstack
, c
);
219 else if (! inside
&& c
== ' ')
221 else if (! inside
&& c
== '\\')
226 obstack_1grow (&temporary_obstack
, c
);
229 obstack_1grow (&temporary_obstack
, '\0');
231 return obstack_finish (&temporary_obstack
);
235 get_base_filename (filename
)
238 char *p
= getenv ("COLLECT_GCC_OPTIONS");
244 char *q
= extract_string (&p
);
246 if (strcmp (q
, "-o") == 0)
247 output
= extract_string (&p
);
248 else if (strcmp (q
, "-c") == 0)
252 if (compiling
&& output
)
255 if (p
&& ! compiling
)
257 warning ("-frepo must be used with -c");
258 flag_use_repository
= 0;
262 return file_name_nondirectory (filename
);
266 open_repo_file (filename
)
270 char *s
= get_base_filename (filename
);
275 p
= file_name_nondirectory (s
);
280 obstack_grow (&permanent_obstack
, s
, p
- s
);
281 repo_name
= obstack_copy0 (&permanent_obstack
, ".rpo", 4);
283 repo_file
= fopen (repo_name
, "r");
291 while ((c
= getc (stream
)) != EOF
&& c
!= '\n')
292 obstack_1grow (&temporary_obstack
, c
);
293 if (obstack_object_size (&temporary_obstack
) == 0)
295 obstack_1grow (&temporary_obstack
, '\0');
296 return obstack_finish (&temporary_obstack
);
305 if (! flag_use_repository
)
308 open_repo_file (filename
);
313 while ((buf
= afgets (repo_file
)))
318 old_args
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
322 old_dir
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
326 old_main
= obstack_copy0 (&permanent_obstack
, buf
+ 2,
332 tree id
= get_identifier (buf
+ 2);
337 IDENTIFIER_REPO_CHOSEN (id
) = 1;
338 orig
= integer_one_node
;
343 original_repo
= perm_tree_cons (orig
, id
, original_repo
);
347 error ("mysterious repository information in %s", repo_name
);
349 obstack_free (&temporary_obstack
, buf
);
354 reopen_repo_file_for_write ()
358 repo_file
= fopen (repo_name
, "w");
362 error ("can't create repository information file `%s'", repo_name
);
363 flag_use_repository
= 0;
367 /* Emit any pending repos. */
373 int repo_changed
= 0;
376 if (! flag_use_repository
)
379 /* Do we have to write out a new info file? */
381 /* Are there any old templates that aren't used any longer or that are
384 for (t
= original_repo
; t
; t
= TREE_CHAIN (t
))
386 if (! IDENTIFIER_REPO_USED (TREE_VALUE (t
))
387 || (! TREE_PURPOSE (t
) && IDENTIFIER_REPO_CHOSEN (TREE_VALUE (t
))))
392 IDENTIFIER_REPO_USED (TREE_VALUE (t
)) = 0;
395 /* Are there any templates that are newly used? */
398 for (t
= pending_repo
; t
; t
= TREE_CHAIN (t
))
400 if (IDENTIFIER_REPO_USED (TREE_VALUE (t
)))
408 args
= getenv ("COLLECT_GCC_OPTIONS");
410 if (! repo_changed
&& pending_repo
)
411 if (strcmp (old_main
, main_input_filename
) != 0
412 || strcmp (old_dir
, dir
) != 0
413 || (args
== NULL
) != (old_args
== NULL
)
414 || (args
&& strcmp (old_args
, args
) != 0))
417 if (! repo_changed
|| errorcount
|| sorrycount
)
420 reopen_repo_file_for_write ();
425 fprintf (repo_file
, "M %s\n", main_input_filename
);
426 fprintf (repo_file
, "D %s\n", dir
);
428 fprintf (repo_file
, "A %s\n", args
);
430 for (t
= pending_repo
; t
; t
= TREE_CHAIN (t
))
432 tree val
= TREE_VALUE (t
);
433 char type
= IDENTIFIER_REPO_CHOSEN (val
) ? 'C' : 'O';
435 fprintf (repo_file
, "%c %s\n", type
, IDENTIFIER_POINTER (val
));