gcc/c-lang.c

   1 /* Language-specific hook definitions for C front end.
   2    Copyright (C) 1991, 1995, 1997, 1998,
   3    1999, 2000, 2001 Free Software Foundation, Inc.
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify it under
   8 the terms of the GNU General Public License as published by the Free
   9 Software Foundation; either version 2, or (at your option) any later
  10 version.
  11
  12 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
  13 WARRANTY; without even the implied warranty of MERCHANTABILITY or
  14 FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  15 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 the Free
  19 Software Foundation, 59 Temple Place - Suite 330, Boston, MA
  20 02111-1307, USA.  */
  21
  22
  23 #include "config.h"
  24 #include "system.h"
  25 #include "tree.h"
  26 #include "c-tree.h"
  27 #include "c-common.h"
  28 #include "langhooks.h"
  29 #include "langhooks-def.h"
  30
  31 static const char *c_init PARAMS ((const char *));
  32 static void c_init_options PARAMS ((void));
  33 static void c_post_options PARAMS ((void));
  34
  35 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
  36
  37 #undef LANG_HOOKS_NAME
  38 #define LANG_HOOKS_NAME "GNU C"
  39 #undef LANG_HOOKS_INIT
  40 #define LANG_HOOKS_INIT c_init
  41 #undef LANG_HOOKS_FINISH
  42 #define LANG_HOOKS_FINISH c_common_finish
  43 #undef LANG_HOOKS_INIT_OPTIONS
  44 #define LANG_HOOKS_INIT_OPTIONS c_init_options
  45 #undef LANG_HOOKS_DECODE_OPTION
  46 #define LANG_HOOKS_DECODE_OPTION c_decode_option
  47 #undef LANG_HOOKS_POST_OPTIONS
  48 #define LANG_HOOKS_POST_OPTIONS c_post_options
  49 #undef LANG_HOOKS_GET_ALIAS_SET
  50 #define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
  51 #undef LANG_HOOKS_SAFE_FROM_P
  52 #define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
  53 #undef LANG_HOOKS_PARSE_FILE
  54 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  55 #undef LANG_HOOKS_STATICP
  56 #define LANG_HOOKS_STATICP c_staticp
  57 #undef LANG_HOOKS_PRINT_IDENTIFIER
  58 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  59 #undef LANG_HOOKS_SET_YYDEBUG
  60 #define LANG_HOOKS_SET_YYDEBUG c_set_yydebug
  61 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  62 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  63
  64 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  65 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  66   c_cannot_inline_tree_fn
  67 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
  68 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
  69   c_disregard_inline_limits
  70 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  71 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
  72   anon_aggr_type_p
  73
  74 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
  75
  76 /* Each front end provides its own.  */
  77 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  78
  79 /* Tree code classes.  */
  80
  81 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
  82
  83 const char tree_code_type[] = {
  84 #include "tree.def"
  85   'x',
  86 #include "c-common.def"
  87 };
  88 #undef DEFTREECODE
  89
  90 /* Table indexed by tree code giving number of expression
  91    operands beyond the fixed part of the node structure.
  92    Not used for types or decls.  */
  93
  94 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
  95
  96 const unsigned char tree_code_length[] = {
  97 #include "tree.def"
  98   0,
  99 #include "c-common.def"
 100 };
 101 #undef DEFTREECODE
 102
 103 /* Names of tree components.
 104    Used for printing out the tree and error messages.  */
 105 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 106
 107 const char *const tree_code_name[] = {
 108 #include "tree.def"
 109   "@@dummy",
 110 #include "c-common.def"
 111 };
 112 #undef DEFTREECODE
 113
 114 /* Post-switch processing.  */
 115 static void
 116 c_post_options ()
 117 {
 118   c_common_post_options ();
 119 }
 120
 121 static void
 122 c_init_options ()
 123 {
 124   c_common_init_options (clk_c);
 125 }
 126
 127 static const char *
 128 c_init (filename)
 129      const char *filename;
 130 {
 131   return c_objc_common_init (filename);
 132 }
 133
 134 /* Used by c-lex.c, but only for objc.  */
 135
 136 tree
 137 lookup_interface (arg)
 138      tree arg ATTRIBUTE_UNUSED;
 139 {
 140   return 0;
 141 }
 142
 143 tree
 144 is_class_name (arg)
 145     tree arg ATTRIBUTE_UNUSED;
 146 {
 147   return 0;
 148 }
 149
 150 void
 151 maybe_objc_check_decl (decl)
 152      tree decl ATTRIBUTE_UNUSED;
 153 {
 154 }
 155
 156 int
 157 maybe_objc_comptypes (lhs, rhs, reflexive)
 158      tree lhs ATTRIBUTE_UNUSED;
 159      tree rhs ATTRIBUTE_UNUSED;
 160      int reflexive ATTRIBUTE_UNUSED;
 161 {
 162   return -1;
 163 }
 164
 165 tree
 166 maybe_building_objc_message_expr ()
 167 {
 168   return 0;
 169 }
 170
 171 int
 172 recognize_objc_keyword ()
 173 {
 174   return 0;
 175 }
 176
 177 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 178
 179 tree
 180 lookup_objc_ivar (id)
 181      tree id ATTRIBUTE_UNUSED;
 182 {
 183   return 0;
 184 }
 185
 186 void
 187 finish_file ()
 188 {
 189   c_objc_common_finish_file ();
 190 }