gcc/objcp/objcp-decl.c

   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
   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 "vec.h"
  27 #include "alias.h"
  28 #include "symtab.h"
  29 #include "options.h"
  30 #include "inchash.h"
  31 #include "tree.h"
  32 #include "cp-tree.h"
  33
  34 #include "c-family/c-objc.h"
  35 #include "objc-act.h"
  36 #include "objcp-decl.h"
  37
  38 /* Hacks to simulate start_struct() and finish_struct(). */
  39
  40 tree
  41 objcp_start_struct (location_t loc ATTRIBUTE_UNUSED,
  42                     enum tree_code code ATTRIBUTE_UNUSED, tree name)
  43 {
  44   tree s;
  45   /* The idea here is to mimic the actions that the C++ parser takes when
  46      constructing 'extern "C" struct NAME {'.  */
  47   push_lang_context (lang_name_c);
  48
  49   if (!name)
  50     name = make_anon_name ();
  51
  52   s = xref_tag (record_type, name, ts_global, 0);
  53   CLASSTYPE_DECLARED_CLASS (s) = 0;  /* this is a 'struct', not a 'class'.  */
  54   xref_basetypes (s, NULL_TREE);     /* no base classes here!  */
  55
  56   return begin_class_definition (s);
  57 }
  58
  59 tree
  60 objcp_finish_struct (location_t loc ATTRIBUTE_UNUSED,
  61                      tree t, tree fieldlist, tree attributes)
  62 {
  63   tree field, next_field;
  64
  65   for (field = fieldlist; field; field = next_field)
  66   {
  67     next_field = TREE_CHAIN (field);      /* insert one field at a time;  */
  68     TREE_CHAIN (field) = NULL_TREE;       /* otherwise, grokfield croaks. */
  69     finish_member_declaration (field);
  70   }
  71   t = finish_struct (t, attributes);
  72
  73   /* If we are inside an @interface and are generating the list of
  74      ivars, we need to check for duplicate ivars.
  75   */
  76   if (fieldlist)
  77     objc_detect_field_duplicates (true);
  78
  79   pop_lang_context ();
  80
  81   return t;
  82 }
  83
  84 void
  85 objcp_finish_function (void)
  86 {
  87   /* The C++ flavor of 'finish_function' does not generate RTL -- one has
  88      to call 'expand_or_defer_fn' to do that.  */
  89   expand_or_defer_fn (finish_function (0));
  90 }
  91
  92 tree
  93 objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
  94 {
  95   return xref_tag (record_type, name, ts_global, false);
  96 }
  97
  98 int
  99 objcp_comptypes (tree type1, tree type2)
 100 {
 101   return comptypes (type1, type2, COMPARE_STRICT);
 102 }
 103
 104 tree
 105 objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
 106 {
 107   return begin_compound_stmt (0);
 108 }
 109
 110 tree
 111 objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
 112 {
 113   /* The following has been snarfed from
 114      cp/semantics.c:finish_compound_stmt().  */
 115   if (TREE_CODE (stmt) == BIND_EXPR)
 116     BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
 117   else if (STATEMENT_LIST_NO_SCOPE (stmt))
 118     stmt = pop_stmt_list (stmt);
 119   else
 120     stmt = do_poplevel (stmt);
 121
 122   return stmt;
 123 }