gcc/objcp/objcp-decl.c

   1 /* Process the ObjC-specific declarations and variables for
   2    the Objective-C++ compiler.
   3    Copyright (C) 2005, 2007 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 "rtl.h"
  28 #include "expr.h"
  29 #include "cp-tree.h"
  30 #include "c-common.h"
  31 #include "flags.h"
  32 #include "input.h"
  33 #include "except.h"
  34 #include "output.h"
  35 #include "toplev.h"
  36 #include "cpplib.h"
  37 #include "debug.h"
  38 #include "target.h"
  39 #include "varray.h"
  40
  41 #include "objc-act.h"
  42 #include "objcp-decl.h"
  43
  44 /* Hacks to simulate start_struct() and finish_struct(). */
  45
  46 tree
  47 objcp_start_struct (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, NULL_TREE);
  62 }
  63
  64 tree
  65 objcp_finish_struct (tree t, tree fieldlist, tree attributes)
  66 {
  67   tree field, next_field;
  68
  69   for (field = fieldlist; field; field = next_field)
  70   {
  71     next_field = TREE_CHAIN (field);      /* insert one field at a time;  */
  72     TREE_CHAIN (field) = NULL_TREE;       /* otherwise, grokfield croaks. */
  73     finish_member_declaration (field);
  74   }
  75   t = finish_struct (t, attributes);
  76   pop_lang_context ();
  77
  78   return t;
  79 }
  80
  81 void
  82 objcp_finish_function (void)
  83 {
  84   /* The C++ flavor of 'finish_function' does not generate RTL -- one has
  85      to call 'expand_or_defer_fn' to do that.  */
  86   expand_or_defer_fn (finish_function (0));
  87 }
  88
  89 tree
  90 objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
  91 {
  92   return xref_tag (record_type, name, ts_global, false);
  93 }
  94
  95 int
  96 objcp_comptypes (tree type1, tree type2)
  97 {
  98   return comptypes (type1, type2, COMPARE_STRICT);
  99 }
 100
 101 tree
 102 objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
 103 {
 104   return begin_compound_stmt (0);
 105 }
 106
 107 tree
 108 objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
 109 {
 110   /* The following has been snarfed from
 111      cp/semantics.c:finish_compound_stmt().  */
 112   if (TREE_CODE (stmt) == BIND_EXPR)
 113     BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
 114   else if (STATEMENT_LIST_NO_SCOPE (stmt))
 115     stmt = pop_stmt_list (stmt);
 116   else
 117     stmt = do_poplevel (stmt);
 118
 119   return stmt;
 120 }