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 "langhooks.h"
  30 #include "langhooks-def.h"
  31 #include "debug.h"
  32 #include "cp-objcp-common.h"
  33 #include "hashtab.h"
  34 #include "target.h"
  35
  36 enum c_language_kind c_language = clk_cxx;
  37 static void cp_init_ts (void);
  38 static const char * cxx_dwarf_name (tree t, int verbosity);
  39 static enum classify_record cp_classify_record (tree type);
  40 static tree cp_eh_personality (void);
  41
  42 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  43    consequently, there should be very few hooks below.  */
  44
  45 #undef LANG_HOOKS_NAME
  46 #define LANG_HOOKS_NAME "GNU C++"
  47 #undef LANG_HOOKS_INIT
  48 #define LANG_HOOKS_INIT cxx_init
  49 #undef LANG_HOOKS_CLASSIFY_RECORD
  50 #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
  51 #undef LANG_HOOKS_GENERIC_TYPE_P
  52 #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
  53
  54 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS
  55 #define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \
  56         get_primary_template_innermost_parameters
  57 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
  58 #define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \
  59         get_template_innermost_arguments
  60 #undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P
  61 #define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \
  62         function_parameter_pack_p
  63 #undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS
  64 #define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \
  65         get_template_argument_pack_elems
  66 #undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P
  67 #define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \
  68         template_template_parameter_p
  69 #undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P
  70 #define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \
  71         function_parameter_expanded_from_pack_p
  72 #undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL
  73 #define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl
  74 #undef LANG_HOOKS_DWARF_NAME
  75 #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
  76 #undef LANG_HOOKS_INIT_TS
  77 #define LANG_HOOKS_INIT_TS cp_init_ts
  78 #undef LANG_HOOKS_EH_PERSONALITY
  79 #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
  80 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  81 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  82
  83 /* Each front end provides its own lang hook initializer.  */
  84 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  85
  86 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  87    there should be very few routines below.  */
  88
  89 /* The following function does something real, but only in Objective-C++.  */
  90
  91 tree
  92 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
  93                              tree args ATTRIBUTE_UNUSED,
  94                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
  95                              tree in_decl ATTRIBUTE_UNUSED,
  96                              bool function_p ATTRIBUTE_UNUSED)
  97 {
  98   return NULL_TREE;
  99 }
 100
 101
 102 static void
 103 cp_init_ts (void)
 104 {
 105   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 106   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 107   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 108
 109   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 110   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 111   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 112
 113   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 114   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 115   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 116
 117   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 118   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 119   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 120
 121   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 122   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 123   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 124
 125   init_shadowed_var_for_decl ();
 126
 127 }
 128
 129 static const char *
 130 cxx_dwarf_name (tree t, int verbosity)
 131 {
 132   gcc_assert (DECL_P (t));
 133
 134   if (DECL_NAME (t)
 135       && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t))))
 136     return NULL;
 137   if (verbosity >= 2)
 138     return decl_as_string (t,
 139                            TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
 140                            | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
 141
 142   return cxx_printable_name (t, verbosity);
 143 }
 144
 145 static enum classify_record
 146 cp_classify_record (tree type)
 147 {
 148   if (CLASSTYPE_DECLARED_CLASS (type))
 149     return RECORD_IS_CLASS;
 150
 151   return RECORD_IS_STRUCT;
 152 }
 153
 154 static GTY(()) tree cp_eh_personality_decl;
 155
 156 static tree
 157 cp_eh_personality (void)
 158 {
 159   if (!cp_eh_personality_decl)
 160     {
 161       const char *lang = (pragma_java_exceptions ? "gcj" : "gxx");
 162       cp_eh_personality_decl = build_personality_function (lang);
 163     }
 164
 165   return cp_eh_personality_decl;
 166 }
 167
 168 #include "gt-cp-cp-lang.h"
 169 #include "gtype-cp.h"