/* Code to maintain a C++ template repository.
- Copyright (C) 1995 Free Software Foundation, Inc.
+ Copyright (C) 1995, 1996, 1997, 1998, 2000, 2001, 2002, 2003
+ Free Software Foundation, Inc.
Contributed by Jason Merrill (jason@cygnus.com)
-This file is part of GNU CC.
+This file is part of GCC.
-GNU CC is free software; you can redistribute it and/or modify
+GCC 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,
+GCC 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, 675 Mass Ave, Cambridge, MA 02139, USA. */
+along with GCC; 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.
+ explicit code. */
- I'm thinking of compiling with -frepo, running a Perl script to update
- files, and then being able to rebuild everything with -fno-implicit.
- Full automation can come later. */
-
-#include <stdio.h>
+#include "config.h"
+#include "system.h"
+#include "coretypes.h"
+#include "tm.h"
#include "tree.h"
#include "cp-tree.h"
#include "input.h"
-
-extern char * rindex ();
-
-static tree pending_repo;
-static char repo_name[1024];
+#include "obstack.h"
+#include "toplev.h"
+#include "diagnostic.h"
+
+static tree repo_get_id (tree);
+static char *extract_string (char **);
+static const char *get_base_filename (const char *);
+static void open_repo_file (const char *);
+static char *afgets (FILE *);
+static void reopen_repo_file_for_write (void);
+
+static GTY(()) tree pending_repo;
+static GTY(()) tree original_repo;
+static char *repo_name;
static FILE *repo_file;
-extern int flag_use_repository;
-extern int errorcount, sorrycount;
+static const char *old_args, *old_dir, *old_main;
-static int repo_changed;
+static struct obstack temporary_obstack;
#define IDENTIFIER_REPO_USED(NODE) (TREE_LANG_FLAG_3 (NODE))
#define IDENTIFIER_REPO_CHOSEN(NODE) (TREE_LANG_FLAG_4 (NODE))
+#if 0
/* Record the flags used to compile this translation unit. */
void
-repo_compile_flags (argc, argv)
- int argc;
- char **argv;
+repo_compile_flags (int argc, char **argv)
{
}
definition at link time. */
void
-repo_template_declared (t)
- tree t;
+repo_template_declared (tree t)
{}
/* Note where the definition of a template lives so that instantiations can
be generated later. */
void
-repo_template_defined (t)
- tree t;
+repo_template_defined (tree t)
{}
/* Note where the definition of a class lives to that template
instantiations can use it. */
void
-repo_class_defined (t)
- tree t;
+repo_class_defined (tree t)
{}
+#endif
+
+static tree
+repo_get_id (tree t)
+{
+ if (TYPE_P (t))
+ {
+ tree vtable;
+
+ /* If we're not done setting up the class, we may not have set up
+ the vtable, so going ahead would give the wrong answer.
+ See g++.pt/instantiate4.C. */
+ if (!COMPLETE_TYPE_P (t) || TYPE_BEING_DEFINED (t))
+ abort ();
+
+ vtable = get_vtbl_decl_for_binfo (TYPE_BINFO (t));
+
+ t = vtable;
+ 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. */
+ to emit it. */
void
-repo_template_used (t)
- tree t;
+repo_template_used (tree t)
{
tree id;
if (! flag_use_repository)
return;
- if (TREE_CODE_CLASS (TREE_CODE (t)) == 't')
+ id = repo_get_id (t);
+ if (id == NULL_TREE)
+ return;
+
+ if (TYPE_P (t))
{
- id = DECL_ASSEMBLER_NAME (TYPE_MAIN_DECL (t));
if (IDENTIFIER_REPO_CHOSEN (id))
mark_class_instantiated (t, 0);
}
- else if (TREE_CODE_CLASS (TREE_CODE (t)) == 'd')
+ else if (DECL_P (t))
{
- id = DECL_ASSEMBLER_NAME (t);
if (IDENTIFIER_REPO_CHOSEN (id))
- mark_function_instantiated (t, 0);
+ /* It doesn't make sense to instantiate a clone, so we
+ instantiate the cloned function instead. Note that this
+ approach will not work correctly if collect2 assigns
+ different clones to different files -- but it shouldn't. */
+ mark_decl_instantiated (DECL_CLONED_FUNCTION_P (t)
+ ? DECL_CLONED_FUNCTION (t) : t,
+ 0);
}
else
- my_friendly_abort (1);
+ abort ();
if (! IDENTIFIER_REPO_USED (id))
{
- repo_changed = 1;
IDENTIFIER_REPO_USED (id) = 1;
+ pending_repo = tree_cons (NULL_TREE, id, pending_repo);
}
- pending_repo = perm_tree_cons (NULL_TREE, t, pending_repo);
}
+#if 0
/* Note that the vtable for a class has been used, and offer to emit it. */
-void
-repo_vtable_used (t)
- tree t;
+static void
+repo_vtable_used (tree t)
{
if (! flag_use_repository)
return;
- pending_repo = perm_tree_cons (NULL_TREE, t, pending_repo);
+ pending_repo = 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;
+repo_inline_used (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)))
+ if (DECL_FUNCTION_MEMBER_P (fn)
+ && TYPE_POLYMORPHIC_P (DECL_CONTEXT (fn)))
{
- repo_vtable_used (DECL_CLASS_CONTEXT (fn));
+ repo_vtable_used (DECL_CONTEXT (fn));
return;
}
- pending_repo = perm_tree_cons (NULL_TREE, fn, pending_repo);
+ pending_repo = 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;
+repo_tinfo_used (tree ti)
+{
+}
+#endif
+
+void
+repo_template_instantiated (tree t, bool extern_p)
{
+ if (! extern_p)
+ {
+ tree id = repo_get_id (t);
+ if (id)
+ IDENTIFIER_REPO_CHOSEN (id) = 1;
+ }
}
+/* Parse a reasonable subset of shell quoting syntax. */
+
+static char *
+extract_string (char **pp)
+{
+ char *p = *pp;
+ int backquote = 0;
+ int inside = 0;
+
+ for (;;)
+ {
+ char c = *p;
+ if (c == '\0')
+ break;
+ ++p;
+ if (backquote)
+ obstack_1grow (&temporary_obstack, c);
+ else if (! inside && c == ' ')
+ break;
+ else if (! inside && c == '\\')
+ backquote = 1;
+ else if (c == '\'')
+ inside = !inside;
+ else
+ obstack_1grow (&temporary_obstack, c);
+ }
+
+ obstack_1grow (&temporary_obstack, '\0');
+ *pp = p;
+ return obstack_finish (&temporary_obstack);
+}
+
+const char *
+get_base_filename (const char *filename)
+{
+ char *p = getenv ("COLLECT_GCC_OPTIONS");
+ char *output = NULL;
+ int compiling = 0;
+
+ while (p && *p)
+ {
+ char *q = extract_string (&p);
+
+ if (strcmp (q, "-o") == 0)
+ output = extract_string (&p);
+ else if (strcmp (q, "-c") == 0)
+ compiling = 1;
+ }
+
+ if (compiling && output)
+ return output;
+
+ if (p && ! compiling)
+ {
+ warning ("-frepo must be used with -c");
+ flag_use_repository = 0;
+ return NULL;
+ }
+
+ return lbasename (filename);
+}
+
static void
-open_repo_file (filename)
- char *filename;
+open_repo_file (const char *filename)
{
- register char *p, *q;
- char *file = filename;
- char *s = rindex (file, '/');
+ register const char *p;
+ const char *s = get_base_filename (filename);
+
if (s == NULL)
- s = file;
- else
- ++s;
+ return;
+
+ p = lbasename (s);
+ p = strrchr (p, '.');
+ if (! p)
+ p = s + strlen (s);
- for (p = repo_name, q = file; q < s; )
- *p++ = *q++;
- *p++ = '.';
- strcpy (p, q);
- strcat (p, ".repo");
+ repo_name = xmalloc (p - s + 5);
+ memcpy (repo_name, s, p - s);
+ memcpy (repo_name + (p - s), ".rpo", 5);
repo_file = fopen (repo_name, "r");
}
+static char *
+afgets (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;
+init_repo (const char *filename)
{
- char buf[1024];
+ char *buf;
if (! flag_use_repository)
return;
+ gcc_obstack_init (&temporary_obstack);
+
open_repo_file (filename);
if (repo_file == 0)
return;
- while (fgets (buf, 1024, repo_file))
+ while ((buf = afgets (repo_file)))
{
- int len = strlen (buf) - 1;
- if (buf[len] != '\n')
- error ("repository info line too long in %s", repo_name);
- buf[len] = '\0';
-
switch (buf[0])
{
case 'A':
+ old_args = ggc_strdup (buf + 2);
+ break;
+ case 'D':
+ old_dir = ggc_strdup (buf + 2);
+ break;
case 'M':
+ old_main = ggc_strdup (buf + 2);
break;
case 'C':
case 'O':
{
- tree id = get_identifier (&buf[2]);
- IDENTIFIER_REPO_USED (id) = 1;
+ tree id = get_identifier (buf + 2);
+ tree orig;
+
if (buf[0] == 'C')
- IDENTIFIER_REPO_CHOSEN (id) = 1;
+ {
+ IDENTIFIER_REPO_CHOSEN (id) = 1;
+ orig = integer_one_node;
+ }
+ else
+ orig = NULL_TREE;
+
+ original_repo = 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 ()
+reopen_repo_file_for_write (void)
{
if (repo_file)
fclose (repo_file);
if (repo_file == 0)
{
- error ("man't create repository information file `%s'", repo_name);
+ error ("can't create repository information file `%s'", repo_name);
flag_use_repository = 0;
}
}
/* Emit any pending repos. */
void
-finish_repo ()
+finish_repo (void)
{
tree t;
- int changed = 0;
+ bool repo_changed = false;
+ char *dir, *args;
- if (! flag_use_repository)
+ if (!flag_use_repository)
return;
/* Do we have to write out a new info file? */
- if (! repo_changed || errorcount || sorrycount)
+ /* 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 = true;
+ 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 = true;
+ break;
+ }
+ }
+
+ dir = getpwd ();
+ args = getenv ("COLLECT_GCC_OPTIONS");
+
+ if (!repo_changed && pending_repo)
+ if (strcmp (old_main, main_input_filename) != 0
+ || strcmp (old_dir, dir) != 0
+ || (args == NULL) != (old_args == NULL)
+ || (args && strcmp (old_args, args) != 0))
+ repo_changed = true;
+
+ 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);
+ fprintf (repo_file, "D %s\n", dir);
+ if (args)
+ fprintf (repo_file, "A %s\n", args);
+
for (t = pending_repo; t; t = TREE_CHAIN (t))
{
tree val = TREE_VALUE (t);
- char type;
-
- if (TREE_CODE_CLASS (TREE_CODE (val)) == 't')
- val = TYPE_MAIN_DECL (val);
- val = DECL_ASSEMBLER_NAME (val);
-
- if (! IDENTIFIER_REPO_USED (val))
- continue;
- IDENTIFIER_REPO_USED (val) = 0;
-
- type = IDENTIFIER_REPO_CHOSEN (val) ? 'C' : 'O';
+ char type = IDENTIFIER_REPO_CHOSEN (val) ? 'C' : 'O';
fprintf (repo_file, "%c %s\n", type, IDENTIFIER_POINTER (val));
}
if (repo_file)
fclose (repo_file);
}
+
+#include "gt-cp-repo.h"
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