gcc/objcp/objcp-lang.c

   1 /* Language-dependent hooks for Objective-C++.
   2    Copyright 2005, 2007, 2008 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
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "tree.h"
  27 #include "cp-tree.h"
  28 #include "c-family/c-common.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 static tree objcxx_eh_personality (void);
  38
  39 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  40    consequently, there should be very few hooks below.  */
  41
  42 #undef LANG_HOOKS_NAME
  43 #define LANG_HOOKS_NAME "GNU Objective-C++"
  44 #undef LANG_HOOKS_INIT
  45 #define LANG_HOOKS_INIT objc_init
  46 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
  47 #define LANG_HOOKS_DECL_PRINTABLE_NAME  objc_printable_name
  48 #undef LANG_HOOKS_GIMPLIFY_EXPR
  49 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
  50 #undef LANG_HOOKS_INIT_TS
  51 #define LANG_HOOKS_INIT_TS objcxx_init_ts
  52 #undef LANG_HOOKS_EH_PERSONALITY
  53 #define LANG_HOOKS_EH_PERSONALITY objcxx_eh_personality
  54 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  55 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  56
  57 /* Each front end provides its own lang hook initializer.  */
  58 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  59
  60 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  61    there should be very few (if any) routines below.  */
  62
  63 tree
  64 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
  65                              tree in_decl, bool function_p ATTRIBUTE_UNUSED)
  66 {
  67 #define RECURSE(NODE)                                                   \
  68   tsubst_copy_and_build (NODE, args, complain, in_decl,                 \
  69                          /*function_p=*/false,                          \
  70                          /*integral_constant_expression_p=*/false)
  71
  72   /* The following two can only occur in Objective-C++.  */
  73
  74   switch ((int) TREE_CODE (t))
  75     {
  76     case MESSAGE_SEND_EXPR:
  77       return objc_finish_message_expr
  78         (RECURSE (TREE_OPERAND (t, 0)),
  79          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  80          RECURSE (TREE_OPERAND (t, 2)));
  81
  82     case CLASS_REFERENCE_EXPR:
  83       return objc_get_class_reference
  84         (RECURSE (TREE_OPERAND (t, 0)));
  85
  86     default:
  87       break;
  88     }
  89
  90   /* Fall back to C++ processing.  */
  91   return NULL_TREE;
  92
  93 #undef RECURSE
  94 }
  95
  96 static void
  97 objcxx_init_ts (void)
  98 {
  99   /* objc decls */
 100   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
 101   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
 102   tree_contains_struct[KEYWORD_DECL][TS_DECL_NON_COMMON] = 1;
 103
 104   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
 105   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WITH_VIS] = 1;
 106   tree_contains_struct[KEYWORD_DECL][TS_DECL_WITH_VIS] = 1;
 107
 108   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WRTL] = 1;
 109   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WRTL] = 1;
 110   tree_contains_struct[KEYWORD_DECL][TS_DECL_WRTL] = 1;
 111
 112   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_MINIMAL] = 1;
 113   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_MINIMAL] = 1;
 114   tree_contains_struct[KEYWORD_DECL][TS_DECL_MINIMAL] = 1;
 115
 116   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_COMMON] = 1;
 117   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_COMMON] = 1;
 118   tree_contains_struct[KEYWORD_DECL][TS_DECL_COMMON] = 1;
 119
 120   /* C++ decls */
 121   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 122   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 123   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 124
 125   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 126   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 127   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 128
 129   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 130   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 131   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 132
 133   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 134   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 135   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 136
 137   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 138   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 139   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 140
 141   init_shadowed_var_for_decl ();
 142 }
 143
 144 static GTY(()) tree objcp_eh_personality_decl;
 145
 146 static tree
 147 objcxx_eh_personality (void)
 148 {
 149   if (!objcp_eh_personality_decl)
 150     objcp_eh_personality_decl
 151         = build_personality_function (targetm.except_unwind_info () == UI_SJLJ
 152                                       ? "__gxx_personality_sj0"
 153                                       : "__gxx_personality_v0");
 154
 155   return objcp_eh_personality_decl;
 156 }
 157
 158
 159 void
 160 finish_file (void)
 161 {
 162   objc_finish_file ();
 163 }
 164
 165 #include "gtype-objcp.h"