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 cp_warning (ec_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 cp_error (ec_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 cp_error (ec_cant_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));