gcc/objcp/objcp-lang.c

   1 /* Language-dependent hooks for Objective-C++.
   2    Copyright (C) 2005-2015 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 "hash-set.h"
  26 #include "machmode.h"
  27 #include "vec.h"
  28 #include "double-int.h"
  29 #include "input.h"
  30 #include "alias.h"
  31 #include "symtab.h"
  32 #include "options.h"
  33 #include "wide-int.h"
  34 #include "inchash.h"
  35 #include "tree.h"
  36 #include "cp-tree.h"
  37 #include "c-family/c-common.h"
  38 #include "c-family/c-objc.h"
  39 #include "objc-act.h"
  40 #include "langhooks.h"
  41 #include "langhooks-def.h"
  42 #include "target.h"
  43 #include "cp-objcp-common.h"
  44
  45 enum c_language_kind c_language = clk_objcxx;
  46 static void objcxx_init_ts (void);
  47
  48 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  49    consequently, there should be very few hooks below.  */
  50
  51 #undef LANG_HOOKS_NAME
  52 #define LANG_HOOKS_NAME "GNU Objective-C++"
  53 #undef LANG_HOOKS_INIT
  54 #define LANG_HOOKS_INIT objc_init
  55 #undef LANG_HOOKS_GIMPLIFY_EXPR
  56 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
  57 #undef LANG_HOOKS_INIT_TS
  58 #define LANG_HOOKS_INIT_TS objcxx_init_ts
  59
  60 /* Each front end provides its own lang hook initializer.  */
  61 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  62
  63 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  64    there should be very few (if any) routines below.  */
  65
  66 tree
  67 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
  68                              tree in_decl, bool function_p ATTRIBUTE_UNUSED)
  69 {
  70 #define RECURSE(NODE)                                                   \
  71   tsubst_copy_and_build (NODE, args, complain, in_decl,                 \
  72                          /*function_p=*/false,                          \
  73                          /*integral_constant_expression_p=*/false)
  74
  75   /* The following two can only occur in Objective-C++.  */
  76
  77   switch ((int) TREE_CODE (t))
  78     {
  79     case MESSAGE_SEND_EXPR:
  80       return objc_finish_message_expr
  81         (RECURSE (TREE_OPERAND (t, 0)),
  82          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  83          RECURSE (TREE_OPERAND (t, 2)), NULL);
  84
  85     case CLASS_REFERENCE_EXPR:
  86       return objc_get_class_reference
  87         (RECURSE (TREE_OPERAND (t, 0)));
  88
  89     default:
  90       break;
  91     }
  92
  93   /* Fall back to C++ processing.  */
  94   return NULL_TREE;
  95
  96 #undef RECURSE
  97 }
  98
  99 static void
 100 objcxx_init_ts (void)
 101 {
 102   objc_common_init_ts ();
 103   cp_common_init_ts ();
 104
 105   init_shadowed_var_for_decl ();
 106 }
 107
 108 #include "gtype-objcp.h"