gcc/cp/cp-lang.c

   1 /* Language-dependent hooks for C++.
   2    Copyright 2001, 2002, 2004 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 2, 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 COPYING.  If not, write to
  19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
  20 Boston, MA 02110-1301, USA.  */
  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-common.h"
  29 #include "toplev.h"
  30 #include "langhooks.h"
  31 #include "langhooks-def.h"
  32 #include "diagnostic.h"
  33 #include "debug.h"
  34 #include "cp-objcp-common.h"
  35 #include "hashtab.h"
  36
  37 enum c_language_kind c_language = clk_cxx;
  38 static void cp_init_ts (void);
  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_DECL_PRINTABLE_NAME
  48 #define LANG_HOOKS_DECL_PRINTABLE_NAME  cxx_printable_name
  49 #undef LANG_HOOKS_FOLD_OBJ_TYPE_REF
  50 #define LANG_HOOKS_FOLD_OBJ_TYPE_REF cp_fold_obj_type_ref
  51 #undef LANG_HOOKS_INIT_TS
  52 #define LANG_HOOKS_INIT_TS cp_init_ts
  53
  54 /* Each front end provides its own lang hook initializer.  */
  55 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  56
  57 /* Tree code classes.  */
  58
  59 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
  60
  61 const enum tree_code_class tree_code_type[] = {
  62 #include "tree.def"
  63   tcc_exceptional,
  64 #include "c-common.def"
  65   tcc_exceptional,
  66 #include "cp-tree.def"
  67 };
  68 #undef DEFTREECODE
  69
  70 /* Table indexed by tree code giving number of expression
  71    operands beyond the fixed part of the node structure.
  72    Not used for types or decls.  */
  73
  74 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
  75
  76 const unsigned char tree_code_length[] = {
  77 #include "tree.def"
  78   0,
  79 #include "c-common.def"
  80   0,
  81 #include "cp-tree.def"
  82 };
  83 #undef DEFTREECODE
  84
  85 /* Names of tree components.
  86    Used for printing out the tree and error messages.  */
  87 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
  88
  89 const char *const tree_code_name[] = {
  90 #include "tree.def"
  91   "@@dummy",
  92 #include "c-common.def"
  93   "@@dummy",
  94 #include "cp-tree.def"
  95 };
  96 #undef DEFTREECODE
  97
  98 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
  99    there should be very few routines below.  */
 100
 101 /* The following function does something real, but only in Objective-C++.  */
 102
 103 tree
 104 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED,
 105                              tree args ATTRIBUTE_UNUSED,
 106                              tsubst_flags_t complain ATTRIBUTE_UNUSED,
 107                              tree in_decl ATTRIBUTE_UNUSED,
 108                              bool function_p ATTRIBUTE_UNUSED)
 109 {
 110   return NULL_TREE;
 111 }
 112
 113
 114 static void
 115 cp_init_ts (void)
 116 {
 117   tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1;
 118   tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1;
 119   tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1;
 120
 121   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1;
 122   tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1;
 123   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1;
 124
 125   tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1;
 126   tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1;
 127   tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1;
 128
 129   tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1;
 130   tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1;
 131   tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1;
 132
 133   tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1;
 134   tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1;
 135   tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1;
 136
 137   init_shadowed_var_for_decl ();
 138
 139 }
 140
 141 void
 142 finish_file (void)
 143 {
 144 }
 145
 146 #include "gtype-cp.h"