gcc/objcp/objcp-lang.c

   1 /* Language-dependent hooks for Objective-C++.
   2    Copyright (C) 2005-2020 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.c;
  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, bool function_p ATTRIBUTE_UNUSED)
  55 {
  56 #define RECURSE(NODE)                                                   \
  57   tsubst_copy_and_build (NODE, args, complain, in_decl,                 \
  58                          /*function_p=*/false,                          \
  59                          /*integral_constant_expression_p=*/false)
  60
  61   /* The following two can only occur in Objective-C++.  */
  62
  63   switch ((int) TREE_CODE (t))
  64     {
  65     case MESSAGE_SEND_EXPR:
  66       return objc_finish_message_expr
  67         (RECURSE (TREE_OPERAND (t, 0)),
  68          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  69          RECURSE (TREE_OPERAND (t, 2)), NULL);
  70
  71     case CLASS_REFERENCE_EXPR:
  72       return objc_get_class_reference
  73         (RECURSE (TREE_OPERAND (t, 0)));
  74
  75     default:
  76       break;
  77     }
  78
  79   /* Fall back to C++ processing.  */
  80   return NULL_TREE;
  81
  82 #undef RECURSE
  83 }
  84
  85 static void
  86 objcxx_init_ts (void)
  87 {
  88   objc_common_init_ts ();
  89   cp_common_init_ts ();
  90 }
  91
  92 #include "gtype-objcp.h"