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 "c-family/c-objc.h"
  30 #include "objc-act.h"
  31 #include "langhooks.h"
  32 #include "langhooks-def.h"
  33 #include "target.h"
  34 #include "cp-objcp-common.h"
  35
  36 enum c_language_kind c_language = clk_objcxx;
  37 static void objcxx_init_ts (void);
  38 static tree objcxx_eh_personality (void);
  39
  40 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  41    consequently, there should be very few hooks below.  */
  42
  43 #undef LANG_HOOKS_NAME
  44 #define LANG_HOOKS_NAME "GNU Objective-C++"
  45 #undef LANG_HOOKS_INIT
  46 #define LANG_HOOKS_INIT objc_init
  47 #undef LANG_HOOKS_GIMPLIFY_EXPR
  48 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
  49 #undef LANG_HOOKS_INIT_TS
  50 #define LANG_HOOKS_INIT_TS objcxx_init_ts
  51 #undef LANG_HOOKS_EH_PERSONALITY
  52 #define LANG_HOOKS_EH_PERSONALITY objcxx_eh_personality
  53 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  54 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  55
  56 /* Each front end provides its own lang hook initializer.  */
  57 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  58
  59 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  60    there should be very few (if any) routines below.  */
  61
  62 tree
  63 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
  64                              tree in_decl, bool function_p ATTRIBUTE_UNUSED)
  65 {
  66 #define RECURSE(NODE)                                                   \
  67   tsubst_copy_and_build (NODE, args, complain, in_decl,                 \
  68                          /*function_p=*/false,                          \
  69                          /*integral_constant_expression_p=*/false)
  70
  71   /* The following two can only occur in Objective-C++.  */
  72
  73   switch ((int) TREE_CODE (t))
  74     {
  75     case MESSAGE_SEND_EXPR:
  76       return objc_finish_message_expr
  77         (RECURSE (TREE_OPERAND (t, 0)),
  78          TREE_OPERAND (t, 1),  /* No need to expand the selector.  */
  79          RECURSE (TREE_OPERAND (t, 2)));
  80
  81     case CLASS_REFERENCE_EXPR:
  82       return objc_get_class_reference
  83         (RECURSE (TREE_OPERAND (t, 0)));
  84
  85     default:
  86       break;
  87     }
  88
  89   /* Fall back to C++ processing.  */
  90   return NULL_TREE;
  91
  92 #undef RECURSE
  93 }
  94
  95 static void
  96 objcxx_init_ts (void)
  97 {
  98   /* objc decls */
  99   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
 100   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_NON_COMMON] = 1;
 101   tree_contains_struct[KEYWORD_DECL][TS_DECL_NON_COMMON] = 1;
 102   tree_contains_struct[PROPERTY_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   tree_contains_struct[PROPERTY_DECL][TS_DECL_WITH_VIS] = 1;
 108
 109   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_WRTL] = 1;
 110   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_WRTL] = 1;
 111   tree_contains_struct[KEYWORD_DECL][TS_DECL_WRTL] = 1;
 112   tree_contains_struct[PROPERTY_DECL][TS_DECL_WRTL] = 1;
 113
 114   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_MINIMAL] = 1;
 115   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_MINIMAL] = 1;
 116   tree_contains_struct[KEYWORD_DECL][TS_DECL_MINIMAL] = 1;
 117   tree_contains_struct[PROPERTY_DECL][TS_DECL_MINIMAL] = 1;
 118
 119   tree_contains_struct[CLASS_METHOD_DECL][TS_DECL_COMMON] = 1;
 120   tree_contains_struct[INSTANCE_METHOD_DECL][TS_DECL_COMMON] = 1;
 121   tree_contains_struct[KEYWORD_DECL][TS_DECL_COMMON] = 1;
 122   tree_contains_struct[PROPERTY_DECL][TS_DECL_COMMON] = 1;
 123
 124   /* C++ decls */
 125   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 126   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 127   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 128
 129   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 130   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 131   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 132
 133   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 134   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 135   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 136
 137   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 138   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 139   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 140
 141   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 142   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 143   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 144
 145   init_shadowed_var_for_decl ();
 146 }
 147
 148 static GTY(()) tree objcp_eh_personality_decl;
 149
 150 static tree
 151 objcxx_eh_personality (void)
 152 {
 153   if (!objcp_eh_personality_decl)
 154     objcp_eh_personality_decl = build_personality_function ("gxx");
 155   return objcp_eh_personality_decl;
 156 }
 157
 158 #include "gtype-objcp.h"