gcc/objcp/objcp-lang.cc

   1 /* Language-dependent hooks for Objective-C++.
   2    Copyright (C) 2005-2023 Free Software Foundation, Inc.
   3    Contributed by Ziemowit Laski  <zlaski@apple.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 3, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License for more details.
  16
  17 You should have received a copy of the GNU General Public License
  18 along with GCC; see the file COPYING3.  If not see
  19 <http://www.gnu.org/licenses/>.  */
  20
  21 #include "config.h"
  22 #include "system.h"
  23 #include "coretypes.h"
  24 #include "cp-tree.h"
  25 #include "c-family/c-objc.h"
  26 #include "objc-act.h"
  27 #include "langhooks.h"
  28 #include "langhooks-def.h"
  29 #include "cp-objcp-common.h"
  30
  31 enum c_language_kind c_language = clk_objcxx;
  32 static void objcxx_init_ts (void);
  33
  34 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  35    consequently, there should be very few hooks below.  */
  36
  37 #undef LANG_HOOKS_NAME
  38 #define LANG_HOOKS_NAME "GNU Objective-C++"
  39 #undef LANG_HOOKS_INIT
  40 #define LANG_HOOKS_INIT objc_init
  41 #undef LANG_HOOKS_GIMPLIFY_EXPR
  42 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
  43 #undef LANG_HOOKS_INIT_TS
  44 #define LANG_HOOKS_INIT_TS objcxx_init_ts
  45
  46 /* Each front end provides its own lang hook initializer.  */
  47 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  48
  49 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.cc;
  50    there should be very few (if any) routines below.  */
  51
  52 tree
  53 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
  54                              tree in_decl)
  55 {
  56 #define RECURSE(NODE)                                                   \
  57   tsubst_copy_and_build (NODE, args, complain, in_decl)
  58
  59   /* The following two can only occur in Objective-C++.  */
  60
  61   switch ((int) TREE_CODE (t))
  62     {
  63     case MESSAGE_SEND_EXPR:
  64       return objc_finish_message_expr
  65         (RECURSE (TREE_OPERAND (t, 0)),
  66          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  67          RECURSE (TREE_OPERAND (t, 2)), NULL);
  68
  69     case CLASS_REFERENCE_EXPR:
  70       return objc_get_class_reference
  71         (RECURSE (TREE_OPERAND (t, 0)));
  72
  73     default:
  74       break;
  75     }
  76
  77   /* Fall back to C++ processing.  */
  78   return NULL_TREE;
  79
  80 #undef RECURSE
  81 }
  82
  83 static void
  84 objcxx_init_ts (void)
  85 {
  86   objc_common_init_ts ();
  87   cp_common_init_ts ();
  88 }
  89
  90 #include "gtype-objcp.h"