gcc/cp/cp-lang.c

   1 /* Language-dependent hooks for C++.
   2    Copyright 2001, 2002, 2004, 2007 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
  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
  41 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
  42    consequently, there should be very few hooks below.  */
  43
  44 #undef LANG_HOOKS_NAME
  45 #define LANG_HOOKS_NAME "GNU C++"
  46 #undef LANG_HOOKS_INIT
  47 #define LANG_HOOKS_INIT cxx_init
  48 #undef LANG_HOOKS_CLASSIFY_RECORD
  49 #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record
  50 #undef LANG_HOOKS_GENERIC_TYPE_P
  51 #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p
  52 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
  53 #define LANG_HOOKS_DECL_PRINTABLE_NAME  cxx_printable_name
  54 #undef LANG_HOOKS_DWARF_NAME
  55 #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name
  56 #undef LANG_HOOKS_FOLD_OBJ_TYPE_REF
  57 #define LANG_HOOKS_FOLD_OBJ_TYPE_REF cp_fold_obj_type_ref
  58 #undef LANG_HOOKS_INIT_TS
  59 #define LANG_HOOKS_INIT_TS cp_init_ts
  60 #undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
  61 #define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
  62
  63 /* Each front end provides its own lang hook initializer.  */
  64 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  65
  66 /* Tree code classes.  */
  67
  68 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
  69
  70 const enum tree_code_class tree_code_type[] = {
  71 #include "tree.def"
  72   tcc_exceptional,
  73 #include "c-common.def"
  74   tcc_exceptional,
  75 #include "cp-tree.def"
  76 };
  77 #undef DEFTREECODE
  78
  79 /* Table indexed by tree code giving number of expression
  80    operands beyond the fixed part of the node structure.
  81    Not used for types or decls.  */
  82
  83 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
  84
  85 const unsigned char tree_code_length[] = {
  86 #include "tree.def"
  87   0,
  88 #include "c-common.def"
  89   0,
  90 #include "cp-tree.def"
  91 };
  92 #undef DEFTREECODE
  93
  94 /* Names of tree components.
  95    Used for printing out the tree and error messages.  */
  96 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
  97
  98 const char *const tree_code_name[] = {
  99 #include "tree.def"
 100   "@@dummy",
 101 #include "c-common.def"
 102   "@@dummy",
 103 #include "cp-tree.def"
 104 };
 105 #undef DEFTREECODE
 106
 107 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
 108    there should be very few routines below.  */
 109
 110 /* The following function does something real, but only in Objective-C++.  */
 111
 112 tree
 113 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
 114                              tree args ATTRIBUTE_UNUSED,
 115                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
 116                              tree in_decl ATTRIBUTE_UNUSED,
 117                              bool function_p ATTRIBUTE_UNUSED)
 118 {
 119   return NULL_TREE;
 120 }
 121
 122
 123 static void
 124 cp_init_ts (void)
 125 {
 126   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 127   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 128   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 129
 130   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 131   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 132   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 133
 134   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 135   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 136   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 137
 138   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 139   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 140   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 141
 142   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 143   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 144   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 145
 146   init_shadowed_var_for_decl ();
 147
 148 }
 149
 150 static const char *
 151 cxx_dwarf_name (tree t, int verbosity)
 152 {
 153   gcc_assert (DECL_P (t));
 154
 155   if (verbosity >= 2)
 156     return decl_as_string (t, TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME);
 157
 158   return cxx_printable_name (t, verbosity);
 159 }
 160
 161 static enum classify_record
 162 cp_classify_record (tree type)
 163 {
 164   if (CLASSTYPE_DECLARED_CLASS (type))
 165     return RECORD_IS_CLASS;
 166
 167   return RECORD_IS_STRUCT;
 168 }
 169
 170 void
 171 finish_file (void)
 172 {
 173 }
 174
 175 #include "gtype-cp.h"