gcc/objcp/objcp-decl.c

   1 /* Process the ObjC-specific declarations and variables for
   2    the Objective-C++ compiler.
   3    Copyright (C) 2005-2014 Free Software Foundation, Inc.
   4    Contributed by Ziemowit Laski  <zlaski@apple.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify it under
   9 the terms of the GNU General Public License as published by the Free
  10 Software Foundation; either version 3, or (at your option) any later
  11 version.
  12
  13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  15 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  16 for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along 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 "tree.h"
  27 #include "cp-tree.h"
  28 #include "hashtab.h"
  29
  30 #include "c-family/c-objc.h"
  31 #include "objc-act.h"
  32 #include "objcp-decl.h"
  33
  34 /* Hacks to simulate start_struct() and finish_struct(). */
  35
  36 tree
  37 objcp_start_struct (location_t loc ATTRIBUTE_UNUSED,
  38                     enum tree_code code ATTRIBUTE_UNUSED, tree name)
  39 {
  40   tree s;
  41   /* The idea here is to mimic the actions that the C++ parser takes when
  42      constructing 'extern "C" struct NAME {'.  */
  43   push_lang_context (lang_name_c);
  44
  45   if (!name)
  46     name = make_anon_name ();
  47
  48   s = xref_tag (record_type, name, ts_global, 0);
  49   CLASSTYPE_DECLARED_CLASS (s) = 0;  /* this is a 'struct', not a 'class'.  */
  50   xref_basetypes (s, NULL_TREE);     /* no base classes here!  */
  51
  52   return begin_class_definition (s);
  53 }
  54
  55 tree
  56 objcp_finish_struct (location_t loc ATTRIBUTE_UNUSED,
  57                      tree t, tree fieldlist, tree attributes)
  58 {
  59   tree field, next_field;
  60
  61   for (field = fieldlist; field; field = next_field)
  62   {
  63     next_field = TREE_CHAIN (field);      /* insert one field at a time;  */
  64     TREE_CHAIN (field) = NULL_TREE;       /* otherwise, grokfield croaks. */
  65     finish_member_declaration (field);
  66   }
  67   t = finish_struct (t, attributes);
  68
  69   /* If we are inside an @interface and are generating the list of
  70      ivars, we need to check for duplicate ivars.
  71   */
  72   if (fieldlist)
  73     objc_detect_field_duplicates (true);
  74
  75   pop_lang_context ();
  76
  77   return t;
  78 }
  79
  80 void
  81 objcp_finish_function (void)
  82 {
  83   /* The C++ flavor of 'finish_function' does not generate RTL -- one has
  84      to call 'expand_or_defer_fn' to do that.  */
  85   expand_or_defer_fn (finish_function (0));
  86 }
  87
  88 tree
  89 objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
  90 {
  91   return xref_tag (record_type, name, ts_global, false);
  92 }
  93
  94 int
  95 objcp_comptypes (tree type1, tree type2)
  96 {
  97   return comptypes (type1, type2, COMPARE_STRICT);
  98 }
  99
 100 tree
 101 objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
 102 {
 103   return begin_compound_stmt (0);
 104 }
 105
 106 tree
 107 objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
 108 {
 109   /* The following has been snarfed from
 110      cp/semantics.c:finish_compound_stmt().  */
 111   if (TREE_CODE (stmt) == BIND_EXPR)
 112     BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
 113   else if (STATEMENT_LIST_NO_SCOPE (stmt))
 114     stmt = pop_stmt_list (stmt);
 115   else
 116     stmt = do_poplevel (stmt);
 117
 118   return stmt;
 119 }