gcc/objcp/objcp-lang.c

   1 /* Language-dependent hooks for Objective-C++.
   2    Copyright 2005, 2007, 2008, 2010, 2011 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 "tm.h"
  25 #include "tree.h"
  26 #include "cp-tree.h"
  27 #include "c-family/c-common.h"
  28 #include "c-family/c-objc.h"
  29 #include "objc-act.h"
  30 #include "langhooks.h"
  31 #include "langhooks-def.h"
  32 #include "target.h"
  33 #include "cp-objcp-common.h"
  34
  35 enum c_language_kind c_language = clk_objcxx;
  36 static void objcxx_init_ts (void);
  37
  38 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  39    consequently, there should be very few hooks below.  */
  40
  41 #undef LANG_HOOKS_NAME
  42 #define LANG_HOOKS_NAME "GNU Objective-C++"
  43 #undef LANG_HOOKS_INIT
  44 #define LANG_HOOKS_INIT objc_init
  45 #undef LANG_HOOKS_GIMPLIFY_EXPR
  46 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
  47 #undef LANG_HOOKS_INIT_TS
  48 #define LANG_HOOKS_INIT_TS objcxx_init_ts
  49
  50 /* Each front end provides its own lang hook initializer.  */
  51 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  52
  53 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  54    there should be very few (if any) routines below.  */
  55
  56 tree
  57 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
  58                              tree in_decl, bool function_p ATTRIBUTE_UNUSED)
  59 {
  60 #define RECURSE(NODE)                                                   \
  61   tsubst_copy_and_build (NODE, args, complain, in_decl,                 \
  62                          /*function_p=*/false,                          \
  63                          /*integral_constant_expression_p=*/false)
  64
  65   /* The following two can only occur in Objective-C++.  */
  66
  67   switch ((int) TREE_CODE (t))
  68     {
  69     case MESSAGE_SEND_EXPR:
  70       return objc_finish_message_expr
  71         (RECURSE (TREE_OPERAND (t, 0)),
  72          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  73          RECURSE (TREE_OPERAND (t, 2)), NULL);
  74
  75     case CLASS_REFERENCE_EXPR:
  76       return objc_get_class_reference
  77         (RECURSE (TREE_OPERAND (t, 0)));
  78
  79     default:
  80       break;
  81     }
  82
  83   /* Fall back to C++ processing.  */
  84   return NULL_TREE;
  85
  86 #undef RECURSE
  87 }
  88
  89 static void
  90 objcxx_init_ts (void)
  91 {
  92   objc_common_init_ts ();
  93   cp_common_init_ts ();
  94
  95   init_shadowed_var_for_decl ();
  96 }
  97
  98 #include "gtype-objcp.h"