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- /* Code to maintain a C++ template repository.
- Copyright (C) 1995 Free Software Foundation, Inc.
- Contributed by Jason Merrill (jason@cygnus.com)
-
- This file is part of GNU CC.
-
- GNU CC is free software; you can redistribute it and/or modify
- it under the terms of the GNU General Public License as published by
- the Free Software Foundation; either version 2, or (at your option)
- any later version.
-
- GNU CC is distributed in the hope that it will be useful,
- but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
-
- You should have received a copy of the GNU General Public License
- along with GNU CC; see the file COPYING. If not, write to
- the Free Software Foundation, 59 Temple Place - Suite 330,
- Boston, MA 02111-1307, USA. */
-
- /* My strategy here is as follows:
-
- Everything should be emitted in a translation unit where it is used.
- The results of the automatic process should be easily reproducible with
- explicit code. */
-
- #include <stdio.h>
- #include "config.h"
- #include "tree.h"
- #include "cp-tree.h"
- #include "input.h"
- #include "obstack.h"
-
- extern char * rindex ();
- extern char * getenv ();
- extern char * getpwd ();
-
- static tree pending_repo;
- static tree original_repo;
- static char *repo_name;
- static FILE *repo_file;
-
- extern int flag_use_repository;
- extern int errorcount, sorrycount;
- extern struct obstack temporary_obstack;
- extern struct obstack permanent_obstack;
-
- #define IDENTIFIER_REPO_USED(NODE) (TREE_LANG_FLAG_3 (NODE))
- #define IDENTIFIER_REPO_CHOSEN(NODE) (TREE_LANG_FLAG_4 (NODE))
-
- /* Record the flags used to compile this translation unit. */
-
- void
- repo_compile_flags (argc, argv)
- int argc;
- char **argv;
- {
- }
-
- /* If this template has not been seen before, add a note to the repository
- saying where the declaration was. This may be used to find the
- definition at link time. */
-
- void
- repo_template_declared (t)
- tree t;
- {}
-
- /* Note where the definition of a template lives so that instantiations can
- be generated later. */
-
- void
- repo_template_defined (t)
- tree t;
- {}
-
- /* Note where the definition of a class lives to that template
- instantiations can use it. */
-
- void
- repo_class_defined (t)
- tree t;
- {}
-
- tree
- repo_get_id (t)
- tree t;
- {
- if (TREE_CODE_CLASS (TREE_CODE (t)) == 't')
- {
- t = TYPE_BINFO_VTABLE (t);
- if (t == NULL_TREE)
- return t;
- }
- return DECL_ASSEMBLER_NAME (t);
- }
-
- /* Note that a template has been used. If we can see the definition, offer
- to emit it. */
-
- void
- repo_template_used (t)
- tree t;
- {
- tree id;
-
- if (! flag_use_repository)
- return;
-
- id = repo_get_id (t);
- if (id == NULL_TREE)
- return;
-
- if (TREE_CODE_CLASS (TREE_CODE (t)) == 't')
- {
- if (IDENTIFIER_REPO_CHOSEN (id))
- mark_class_instantiated (t, 0);
- }
- else if (TREE_CODE_CLASS (TREE_CODE (t)) == 'd')
- {
- if (IDENTIFIER_REPO_CHOSEN (id))
- mark_function_instantiated (t, 0);
- }
- else
- my_friendly_abort (1);
-
- if (! IDENTIFIER_REPO_USED (id))
- {
- IDENTIFIER_REPO_USED (id) = 1;
- pending_repo = perm_tree_cons (NULL_TREE, id, pending_repo);
- }
- }
-
- /* Note that the vtable for a class has been used, and offer to emit it. */
-
- void
- repo_vtable_used (t)
- tree t;
- {
- if (! flag_use_repository)
- return;
-
- pending_repo = perm_tree_cons (NULL_TREE, t, pending_repo);
- }
-
- /* Note that an inline with external linkage has been used, and offer to
- emit it. */
-
- void
- repo_inline_used (fn)
- tree fn;
- {
- if (! flag_use_repository)
- return;
-
- /* Member functions of polymorphic classes go with their vtables. */
- if (DECL_FUNCTION_MEMBER_P (fn) && TYPE_VIRTUAL_P (DECL_CLASS_CONTEXT (fn)))
- {
- repo_vtable_used (DECL_CLASS_CONTEXT (fn));
- return;
- }
-
- pending_repo = perm_tree_cons (NULL_TREE, fn, pending_repo);
- }
-
- /* Note that a particular typeinfo node has been used, and offer to
- emit it. */
-
- void
- repo_tinfo_used (ti)
- tree ti;
- {
- }
-
- void
- repo_template_instantiated (t, extern_p)
- tree t;
- int extern_p;
- {
- if (! extern_p)
- {
- tree id = repo_get_id (t);
- if (id)
- IDENTIFIER_REPO_CHOSEN (id) = 1;
- }
- }
-
- static char *
- save_string (s, len)
- char *s;
- int len;
- {
- return obstack_copy0 (&temporary_obstack, s, len);
- }
-
- static char *
- get_base_filename (filename)
- char *filename;
- {
- char *p = getenv ("COLLECT_GCC_OPTIONS");
- char *output = 0;
- int compiling = 0;
-
- if (p)
- while (*p)
- {
- char *q = p;
- while (*q && *q != ' ') q++;
- if (*p == '-' && p[1] == 'o')
- {
- p += 2;
- if (p == q)
- {
- p++; q++;
- if (*q)
- while (*q && *q != ' ') q++;
- }
-
- output = save_string (p, q - p);
- }
- else if (*p == '-' && p[1] == 'c')
- compiling = 1;
- if (*q) q++;
- p = q;
- }
-
- if (compiling && output)
- return output;
-
- if (p && ! compiling)
- {
- warning ("-frepo must be used with -c");
- flag_use_repository = 0;
- return NULL;
- }
-
- p = rindex (filename, '/');
- if (p)
- return p+1;
- else
- return filename;
- }
-
- static void
- open_repo_file (filename)
- char *filename;
- {
- register char *p, *q;
- char *s = get_base_filename (filename);
-
- if (s == NULL)
- return;
-
- p = rindex (s, '/');
- if (! p)
- p = s;
- p = rindex (p, '.');
- if (! p)
- p = s + strlen (s);
-
- obstack_grow (&permanent_obstack, s, p - s);
- repo_name = obstack_copy0 (&permanent_obstack, ".rpo", 4);
-
- repo_file = fopen (repo_name, "r");
- }
-
- static char *
- afgets (stream)
- FILE *stream;
- {
- int c;
- while ((c = getc (stream)) != EOF && c != '\n')
- obstack_1grow (&temporary_obstack, c);
- if (obstack_object_size (&temporary_obstack) == 0)
- return NULL;
- obstack_1grow (&temporary_obstack, '\0');
- return obstack_finish (&temporary_obstack);
- }
-
- void
- init_repo (filename)
- char *filename;
- {
- char *buf;
-
- if (! flag_use_repository)
- return;
-
- open_repo_file (filename);
-
- if (repo_file == 0)
- return;
-
- while (buf = afgets (repo_file))
- {
- switch (buf[0])
- {
- case 'A':
- case 'D':
- case 'M':
- break;
- case 'C':
- case 'O':
- {
- tree id = get_identifier (buf + 2);
- tree orig;
-
- if (buf[0] == 'C')
- {
- IDENTIFIER_REPO_CHOSEN (id) = 1;
- orig = integer_one_node;
- }
- else
- orig = NULL_TREE;
-
- original_repo = perm_tree_cons (orig, id, original_repo);
- }
- break;
- default:
- error ("mysterious repository information in %s", repo_name);
- }
- obstack_free (&temporary_obstack, buf);
- }
- }
-
- static void
- reopen_repo_file_for_write ()
- {
- if (repo_file)
- fclose (repo_file);
- repo_file = fopen (repo_name, "w");
-
- if (repo_file == 0)
- {
- error ("can't create repository information file `%s'", repo_name);
- flag_use_repository = 0;
- }
- }
-
- /* Emit any pending repos. */
-
- void
- finish_repo ()
- {
- tree t;
- char *p;
- int repo_changed = 0;
-
- if (! flag_use_repository)
- return;
-
- /* Do we have to write out a new info file? */
-
- /* Are there any old templates that aren't used any longer or that are
- newly chosen? */
-
- for (t = original_repo; t; t = TREE_CHAIN (t))
- {
- if (! IDENTIFIER_REPO_USED (TREE_VALUE (t))
- || (! TREE_PURPOSE (t) && IDENTIFIER_REPO_CHOSEN (TREE_VALUE (t))))
- {
- repo_changed = 1;
- break;
- }
- IDENTIFIER_REPO_USED (TREE_VALUE (t)) = 0;
- }
-
- /* Are there any templates that are newly used? */
-
- if (! repo_changed)
- for (t = pending_repo; t; t = TREE_CHAIN (t))
- {
- if (IDENTIFIER_REPO_USED (TREE_VALUE (t)))
- {
- repo_changed = 1;
- break;
- }
- }
-
- if (! repo_changed || errorcount || sorrycount)
- goto out;
-
- reopen_repo_file_for_write ();
-
- if (repo_file == 0)
- goto out;
-
- fprintf (repo_file, "M %s\n", main_input_filename);
-
- p = getpwd ();
- fprintf (repo_file, "D %s\n", p);
-
- p = getenv ("COLLECT_GCC_OPTIONS");
- if (p != 0)
- fprintf (repo_file, "A %s\n", p);
-
- for (t = pending_repo; t; t = TREE_CHAIN (t))
- {
- tree val = TREE_VALUE (t);
- char type = IDENTIFIER_REPO_CHOSEN (val) ? 'C' : 'O';
-
- fprintf (repo_file, "%c %s\n", type, IDENTIFIER_POINTER (val));
- }
-
- out:
- if (repo_file)
- fclose (repo_file);
- }
-