gcc/cp/cp-lang.c

   1 /* Language-dependent hooks for C++.
   2    Copyright 2001, 2002, 2004, 2007, 2008, 2009, 2010
   3    Free Software Foundation, Inc.
   4    Contributed by Alexandre Oliva  <aoliva@redhat.com>
   5
   6 This file is part of GCC.
   7
   8 GCC is free software; you can redistribute it and/or modify
   9 it under the terms of the GNU General Public License as published by
  10 the Free Software Foundation; either version 3, or (at your option)
  11 any later version.
  12
  13 GCC is distributed in the hope that it will be useful,
  14 but WITHOUT ANY WARRANTY; without even the implied warranty of
  15 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16 GNU General Public License for more details.
  17
  18 You should have received a copy of the GNU General Public License
  19 along with GCC; see the file COPYING3.  If not see
  20 <http://www.gnu.org/licenses/>.  */
  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 "toplev.h"
  30 #include "langhooks.h"
  31 #include "langhooks-def.h"
  32 #include "debug.h"
  33 #include "cp-objcp-common.h"
  34 #include "hashtab.h"
  35 #include "target.h"
  36
  37 enum c_language_kind c_language = clk_cxx;
  38 static void cp_init_ts (void);
  39 static const char * cxx_dwarf_name (tree t, int verbosity);
  40 static enum classify_record cp_classify_record (tree type);
  41 static tree cp_eh_personality (void);
  42
  43 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  44    consequently, there should be very few hooks below.  */
  45
  46 #undef LANG_HOOKS_NAME
  47 #define LANG_HOOKS_NAME "GNU C++"
  48 #undef LANG_HOOKS_INIT
  49 #define LANG_HOOKS_INIT cxx_init
  50 #undef LANG_HOOKS_CLASSIFY_RECORD
  51 #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
  52 #undef LANG_HOOKS_GENERIC_TYPE_P
  53 #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
  54
  55 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS
  56 #define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \
  57         get_primary_template_innermost_parameters
  58 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
  59 #define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \
  60         get_template_innermost_arguments
  61 #undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P
  62 #define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \
  63         function_parameter_pack_p
  64 #undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS
  65 #define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \
  66         get_template_argument_pack_elems
  67 #undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P
  68 #define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \
  69         template_template_parameter_p
  70 #undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P
  71 #define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \
  72         function_parameter_expanded_from_pack_p
  73 #undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL
  74 #define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl
  75 #undef LANG_HOOKS_DWARF_NAME
  76 #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
  77 #undef LANG_HOOKS_INIT_TS
  78 #define LANG_HOOKS_INIT_TS cp_init_ts
  79 #undef LANG_HOOKS_EH_PERSONALITY
  80 #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
  81 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  82 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  83
  84 /* Each front end provides its own lang hook initializer.  */
  85 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  86
  87 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  88    there should be very few routines below.  */
  89
  90 /* The following function does something real, but only in Objective-C++.  */
  91
  92 tree
  93 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
  94                              tree args ATTRIBUTE_UNUSED,
  95                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
  96                              tree in_decl ATTRIBUTE_UNUSED,
  97                              bool function_p ATTRIBUTE_UNUSED)
  98 {
  99   return NULL_TREE;
 100 }
 101
 102
 103 static void
 104 cp_init_ts (void)
 105 {
 106   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 107   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 108   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 109
 110   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 111   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 112   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 113
 114   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 115   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 116   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 117
 118   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 119   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 120   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 121
 122   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 123   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 124   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 125
 126   init_shadowed_var_for_decl ();
 127
 128 }
 129
 130 static const char *
 131 cxx_dwarf_name (tree t, int verbosity)
 132 {
 133   gcc_assert (DECL_P (t));
 134
 135   if (DECL_NAME (t)
 136       && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t))))
 137     return NULL;
 138   if (verbosity >= 2)
 139     return decl_as_string (t,
 140                            TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
 141                            | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
 142
 143   return cxx_printable_name (t, verbosity);
 144 }
 145
 146 static enum classify_record
 147 cp_classify_record (tree type)
 148 {
 149   if (CLASSTYPE_DECLARED_CLASS (type))
 150     return RECORD_IS_CLASS;
 151
 152   return RECORD_IS_STRUCT;
 153 }
 154
 155 static GTY(()) tree cp_eh_personality_decl;
 156
 157 static tree
 158 cp_eh_personality (void)
 159 {
 160   if (!cp_eh_personality_decl)
 161     {
 162       const char *lang = (pragma_java_exceptions ? "gcj" : "gxx");
 163       cp_eh_personality_decl = build_personality_function (lang);
 164     }
 165
 166   return cp_eh_personality_decl;
 167 }
 168
 169 #include "gt-cp-cp-lang.h"
 170 #include "gtype-cp.h"