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