gcc/cp/cp-lang.c

   1 /* Language-dependent hooks for C++.
   2    Copyright 2001, 2002, 2004, 2007, 2008, 2009 Free Software Foundation, Inc.
   3    Contributed by Alexandre Oliva  <aoliva@redhat.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 "tree.h"
  26 #include "cp-tree.h"
  27 #include "c-common.h"
  28 #include "toplev.h"
  29 #include "langhooks.h"
  30 #include "langhooks-def.h"
  31 #include "diagnostic.h"
  32 #include "debug.h"
  33 #include "cp-objcp-common.h"
  34 #include "hashtab.h"
  35 #include "except.h"
  36 #include "expr.h"
  37
  38 enum c_language_kind c_language = clk_cxx;
  39 static void cp_init_ts (void);
  40 static const char * cxx_dwarf_name (tree t, int verbosity);
  41 static enum classify_record cp_classify_record (tree type);
  42 static tree cp_eh_personality (void);
  43
  44 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  45    consequently, there should be very few hooks below.  */
  46
  47 #undef LANG_HOOKS_NAME
  48 #define LANG_HOOKS_NAME "GNU C++"
  49 #undef LANG_HOOKS_INIT
  50 #define LANG_HOOKS_INIT cxx_init
  51 #undef LANG_HOOKS_CLASSIFY_RECORD
  52 #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
  53 #undef LANG_HOOKS_GENERIC_TYPE_P
  54 #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
  55
  56 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS
  57 #define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \
  58         get_primary_template_innermost_parameters
  59 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS
  60 #define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \
  61         get_template_innermost_arguments
  62 #undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P
  63 #define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \
  64         function_parameter_pack_p
  65 #undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS
  66 #define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \
  67         get_template_argument_pack_elems
  68 #undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P
  69 #define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \
  70         template_template_parameter_p
  71 #undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P
  72 #define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \
  73         function_parameter_expanded_from_pack_p
  74 #undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL
  75 #define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl
  76 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
  77 #define LANG_HOOKS_DECL_PRINTABLE_NAME  cxx_printable_name
  78 #undef LANG_HOOKS_DWARF_NAME
  79 #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
  80 #undef LANG_HOOKS_INIT_TS
  81 #define LANG_HOOKS_INIT_TS cp_init_ts
  82 #undef LANG_HOOKS_EH_PERSONALITY
  83 #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
  84 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  85 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  86
  87 /* Each front end provides its own lang hook initializer.  */
  88 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  89
  90 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  91    there should be very few routines below.  */
  92
  93 /* The following function does something real, but only in Objective-C++.  */
  94
  95 tree
  96 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
  97                              tree args ATTRIBUTE_UNUSED,
  98                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
  99                              tree in_decl ATTRIBUTE_UNUSED,
 100                              bool function_p ATTRIBUTE_UNUSED)
 101 {
 102   return NULL_TREE;
 103 }
 104
 105
 106 static void
 107 cp_init_ts (void)
 108 {
 109   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 110   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 111   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 112
 113   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 114   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 115   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 116
 117   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 118   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 119   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 120
 121   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 122   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 123   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 124
 125   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 126   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 127   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 128
 129   init_shadowed_var_for_decl ();
 130
 131 }
 132
 133 static const char *
 134 cxx_dwarf_name (tree t, int verbosity)
 135 {
 136   gcc_assert (DECL_P (t));
 137
 138   if (DECL_NAME (t)
 139       && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t))))
 140     return NULL;
 141   if (verbosity >= 2)
 142     return decl_as_string (t,
 143                            TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
 144                            | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
 145
 146   return cxx_printable_name (t, verbosity);
 147 }
 148
 149 static enum classify_record
 150 cp_classify_record (tree type)
 151 {
 152   if (CLASSTYPE_DECLARED_CLASS (type))
 153     return RECORD_IS_CLASS;
 154
 155   return RECORD_IS_STRUCT;
 156 }
 157
 158 void
 159 finish_file (void)
 160 {
 161 }
 162
 163 static GTY(()) tree cp_eh_personality_decl;
 164
 165 static tree
 166 cp_eh_personality (void)
 167 {
 168   if (!cp_eh_personality_decl)
 169     {
 170       if (!pragma_java_exceptions)
 171         cp_eh_personality_decl
 172           = build_personality_function (USING_SJLJ_EXCEPTIONS
 173                                         ? "__gxx_personality_sj0"
 174                                         : "__gxx_personality_v0");
 175       else
 176         cp_eh_personality_decl
 177           = build_personality_function (USING_SJLJ_EXCEPTIONS
 178                                         ? "__gcj_personality_sj0"
 179                                         : "__gcj_personality_v0");
 180     }
 181
 182   return cp_eh_personality_decl;
 183 }
 184
 185 #include "gt-cp-cp-lang.h"
 186 #include "gtype-cp.h"