1/* Process the ObjC-specific declarations and variables for
2   the Objective-C++ compiler.
3   Copyright (C) 2005-2015 Free Software Foundation, Inc.
4   Contributed by Ziemowit Laski  <zlaski@apple.com>
5
6This file is part of GCC.
7
8GCC is free software; you can redistribute it and/or modify it under
9the terms of the GNU General Public License as published by the Free
10Software Foundation; either version 3, or (at your option) any later
11version.
12
13GCC is distributed in the hope that it will be useful, but WITHOUT ANY
14WARRANTY; without even the implied warranty of MERCHANTABILITY or
15FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
16for more details.
17
18You should have received a copy of the GNU General Public License
19along with GCC; see the file COPYING3.  If not see
20<http://www.gnu.org/licenses/>.  */
21
22#include "config.h"
23#include "system.h"
24#include "coretypes.h"
25#include "tm.h"
26#include "hash-set.h"
27#include "machmode.h"
28#include "vec.h"
29#include "double-int.h"
30#include "input.h"
31#include "alias.h"
32#include "symtab.h"
33#include "options.h"
34#include "wide-int.h"
35#include "inchash.h"
36#include "tree.h"
37#include "cp-tree.h"
38
39#include "c-family/c-objc.h"
40#include "objc-act.h"
41#include "objcp-decl.h"
42
43/* Hacks to simulate start_struct() and finish_struct(). */
44
45tree
46objcp_start_struct (location_t loc ATTRIBUTE_UNUSED,
47		    enum tree_code code ATTRIBUTE_UNUSED, tree name)
48{
49  tree s;
50  /* The idea here is to mimic the actions that the C++ parser takes when
51     constructing 'extern "C" struct NAME {'.  */
52  push_lang_context (lang_name_c);
53
54  if (!name)
55    name = make_anon_name ();
56
57  s = xref_tag (record_type, name, ts_global, 0);
58  CLASSTYPE_DECLARED_CLASS (s) = 0;  /* this is a 'struct', not a 'class'.  */
59  xref_basetypes (s, NULL_TREE);     /* no base classes here!  */
60
61  return begin_class_definition (s);
62}
63
64tree
65objcp_finish_struct (location_t loc ATTRIBUTE_UNUSED,
66		     tree t, tree fieldlist, tree attributes)
67{
68  tree field, next_field;
69
70  for (field = fieldlist; field; field = next_field)
71  {
72    next_field = TREE_CHAIN (field);      /* insert one field at a time;  */
73    TREE_CHAIN (field) = NULL_TREE;       /* otherwise, grokfield croaks. */
74    finish_member_declaration (field);
75  }
76  t = finish_struct (t, attributes);
77
78  /* If we are inside an @interface and are generating the list of
79     ivars, we need to check for duplicate ivars.
80  */
81  if (fieldlist)
82    objc_detect_field_duplicates (true);
83
84  pop_lang_context ();
85
86  return t;
87}
88
89void
90objcp_finish_function (void)
91{
92  /* The C++ flavor of 'finish_function' does not generate RTL -- one has
93     to call 'expand_or_defer_fn' to do that.  */
94  expand_or_defer_fn (finish_function (0));
95}
96
97tree
98objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
99{
100  return xref_tag (record_type, name, ts_global, false);
101}
102
103int
104objcp_comptypes (tree type1, tree type2)
105{
106  return comptypes (type1, type2, COMPARE_STRICT);
107}
108
109tree
110objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
111{
112  return begin_compound_stmt (0);
113}
114
115tree
116objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
117{
118  /* The following has been snarfed from
119     cp/semantics.c:finish_compound_stmt().  */
120  if (TREE_CODE (stmt) == BIND_EXPR)
121    BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
122  else if (STATEMENT_LIST_NO_SCOPE (stmt))
123    stmt = pop_stmt_list (stmt);
124  else
125    stmt = do_poplevel (stmt);
126
127  return stmt;
128}
129