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_FOLD_OBJ_TYPE_REF
  81 #define LANG_HOOKS_FOLD_OBJ_TYPE_REF cp_fold_obj_type_ref
  82 #undef LANG_HOOKS_INIT_TS
  83 #define LANG_HOOKS_INIT_TS cp_init_ts
  84 #undef LANG_HOOKS_EH_PERSONALITY
  85 #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality
  86 #undef LANG_HOOKS_EH_RUNTIME_TYPE
  87 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type
  88
  89 /* Each front end provides its own lang hook initializer.  */
  90 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  91
  92 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  93    there should be very few routines below.  */
  94
  95 /* The following function does something real, but only in Objective-C++.  */
  96
  97 tree
  98 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
  99                              tree args ATTRIBUTE_UNUSED,
 100                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
 101                              tree in_decl ATTRIBUTE_UNUSED,
 102                              bool function_p ATTRIBUTE_UNUSED)
 103 {
 104   return NULL_TREE;
 105 }
 106
 107
 108 static void
 109 cp_init_ts (void)
 110 {
 111   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 112   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 113   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 114
 115   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 116   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 117   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 118
 119   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 120   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 121   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 122
 123   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 124   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 125   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 126
 127   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 128   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 129   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 130
 131   init_shadowed_var_for_decl ();
 132
 133 }
 134
 135 static const char *
 136 cxx_dwarf_name (tree t, int verbosity)
 137 {
 138   gcc_assert (DECL_P (t));
 139
 140   if (DECL_NAME (t)
 141       && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t))))
 142     return NULL;
 143   if (verbosity >= 2)
 144     return decl_as_string (t,
 145                            TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME
 146                            | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS);
 147
 148   return cxx_printable_name (t, verbosity);
 149 }
 150
 151 static enum classify_record
 152 cp_classify_record (tree type)
 153 {
 154   if (CLASSTYPE_DECLARED_CLASS (type))
 155     return RECORD_IS_CLASS;
 156
 157   return RECORD_IS_STRUCT;
 158 }
 159
 160 void
 161 finish_file (void)
 162 {
 163 }
 164
 165 static GTY(()) tree cp_eh_personality_decl;
 166
 167 static tree
 168 cp_eh_personality (void)
 169 {
 170   if (!cp_eh_personality_decl)
 171     {
 172       if (!pragma_java_exceptions)
 173         cp_eh_personality_decl
 174           = build_personality_function (USING_SJLJ_EXCEPTIONS
 175                                         ? "__gxx_personality_sj0"
 176                                         : "__gxx_personality_v0");
 177       else
 178         cp_eh_personality_decl
 179           = build_personality_function (USING_SJLJ_EXCEPTIONS
 180                                         ? "__gcj_personality_sj0"
 181                                         : "__gcj_personality_v0");
 182     }
 183
 184   return cp_eh_personality_decl;
 185 }
 186
 187 #include "gt-cp-cp-lang.h"
 188 #include "gtype-cp.h"