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/* Process the ObjC-specific declarations and variables for
the Objective-C++ compiler.
Copyright (C) 2005, 2007, 2010 Free Software Foundation, Inc.
Contributed by Ziemowit Laski <zlaski@apple.com>
This file is part of GCC.
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 3, or (at your option) any later
version.
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 GCC; see the file COPYING3. If not see
<http://www.gnu.org/licenses/>. */
#include "config.h"
#include "system.h"
#include "coretypes.h"
#include "tm.h"
#include "tree.h"
#include "cp-tree.h"
#include "hashtab.h"
#include "c-family/c-objc.h"
#include "objc-act.h"
#include "objcp-decl.h"
/* Hacks to simulate start_struct() and finish_struct(). */
tree
objcp_start_struct (location_t loc ATTRIBUTE_UNUSED,
enum tree_code code ATTRIBUTE_UNUSED, tree name)
{
tree s;
/* The idea here is to mimic the actions that the C++ parser takes when
constructing 'extern "C" struct NAME {'. */
push_lang_context (lang_name_c);
if (!name)
name = make_anon_name ();
s = xref_tag (record_type, name, ts_global, 0);
CLASSTYPE_DECLARED_CLASS (s) = 0; /* this is a 'struct', not a 'class'. */
xref_basetypes (s, NULL_TREE); /* no base classes here! */
return begin_class_definition (s, NULL_TREE);
}
tree
objcp_finish_struct (location_t loc ATTRIBUTE_UNUSED,
tree t, tree fieldlist, tree attributes)
{
tree field, next_field;
for (field = fieldlist; field; field = next_field)
{
next_field = TREE_CHAIN (field); /* insert one field at a time; */
TREE_CHAIN (field) = NULL_TREE; /* otherwise, grokfield croaks. */
finish_member_declaration (field);
}
t = finish_struct (t, attributes);
/* If we are inside an @interface and are generating the list of
ivars, we need to check for duplicate ivars.
*/
if (fieldlist)
{
tree original_fieldlist = fieldlist;
fieldlist = objc_get_interface_ivars (fieldlist);
if (fieldlist != original_fieldlist)
{
/* Minimal implementation of the equivalent of the C
front-end's detect_field_duplicates().
*/
htab_t htab = htab_create (37, htab_hash_pointer, htab_eq_pointer, NULL);
tree x, y;
void **slot;
for (x = fieldlist; x ; x = DECL_CHAIN (x))
if ((y = DECL_NAME (x)) != 0)
{
slot = htab_find_slot (htab, y, INSERT);
if (*slot)
{
error ("duplicate member %q+D", x);
DECL_NAME (x) = NULL_TREE;
}
*slot = y;
}
htab_delete (htab);
}
}
pop_lang_context ();
return t;
}
void
objcp_finish_function (void)
{
/* The C++ flavor of 'finish_function' does not generate RTL -- one has
to call 'expand_or_defer_fn' to do that. */
expand_or_defer_fn (finish_function (0));
}
tree
objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
{
return xref_tag (record_type, name, ts_global, false);
}
int
objcp_comptypes (tree type1, tree type2)
{
return comptypes (type1, type2, COMPARE_STRICT);
}
tree
objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
{
return begin_compound_stmt (0);
}
tree
objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
{
/* The following has been snarfed from
cp/semantics.c:finish_compound_stmt(). */
if (TREE_CODE (stmt) == BIND_EXPR)
BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
else if (STATEMENT_LIST_NO_SCOPE (stmt))
stmt = pop_stmt_list (stmt);
else
stmt = do_poplevel (stmt);
return stmt;
}
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