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_MARK_TREE
  54 #define LANG_HOOKS_MARK_TREE c_mark_tree
  55 #undef LANG_HOOKS_EXPAND_EXPR
  56 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  57 #undef LANG_HOOKS_PARSE_FILE
  58 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  59 #undef LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES
  60 #define LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES c_insert_default_attributes
  61 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  62 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  63 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  64 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  65 #undef LANG_HOOKS_STATICP
  66 #define LANG_HOOKS_STATICP c_staticp
  67 #undef LANG_HOOKS_PRINT_IDENTIFIER
  68 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  69 #undef LANG_HOOKS_SET_YYDEBUG
  70 #define LANG_HOOKS_SET_YYDEBUG c_set_yydebug
  71 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  72 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  73
  74 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  75 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  76   c_cannot_inline_tree_fn
  77 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
  78 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
  79   c_disregard_inline_limits
  80 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  81 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
  82   anon_aggr_type_p
  83 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
  84 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
  85   c_convert_parm_for_inlining
  86
  87 #undef LANG_HOOKS_TYPE_FOR_MODE
  88 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
  89 #undef LANG_HOOKS_TYPE_FOR_SIZE
  90 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
  91
  92 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
  93
  94 /* Each front end provides its own.  */
  95 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
  96
  97 /* Tree code classes.  */
  98
  99 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 100
 101 const char tree_code_type[] = {
 102 #include "tree.def"
 103   'x',
 104 #include "c-common.def"
 105 };
 106 #undef DEFTREECODE
 107
 108 /* Table indexed by tree code giving number of expression
 109    operands beyond the fixed part of the node structure.
 110    Not used for types or decls.  */
 111
 112 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 113
 114 const unsigned char tree_code_length[] = {
 115 #include "tree.def"
 116   0,
 117 #include "c-common.def"
 118 };
 119 #undef DEFTREECODE
 120
 121 /* Names of tree components.
 122    Used for printing out the tree and error messages.  */
 123 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 124
 125 const char *const tree_code_name[] = {
 126 #include "tree.def"
 127   "@@dummy",
 128 #include "c-common.def"
 129 };
 130 #undef DEFTREECODE
 131
 132 /* Post-switch processing.  */
 133 static void
 134 c_post_options ()
 135 {
 136   c_common_post_options ();
 137 }
 138
 139 static void
 140 c_init_options ()
 141 {
 142   c_common_init_options (clk_c);
 143 }
 144
 145 static const char *
 146 c_init (filename)
 147      const char *filename;
 148 {
 149   return c_objc_common_init (filename);
 150 }
 151
 152 /* Used by c-lex.c, but only for objc.  */
 153
 154 tree
 155 lookup_interface (arg)
 156      tree arg ATTRIBUTE_UNUSED;
 157 {
 158   return 0;
 159 }
 160
 161 tree
 162 is_class_name (arg)
 163     tree arg ATTRIBUTE_UNUSED;
 164 {
 165   return 0;
 166 }
 167
 168 void
 169 maybe_objc_check_decl (decl)
 170      tree decl ATTRIBUTE_UNUSED;
 171 {
 172 }
 173
 174 int
 175 maybe_objc_comptypes (lhs, rhs, reflexive)
 176      tree lhs ATTRIBUTE_UNUSED;
 177      tree rhs ATTRIBUTE_UNUSED;
 178      int reflexive ATTRIBUTE_UNUSED;
 179 {
 180   return -1;
 181 }
 182
 183 tree
 184 maybe_building_objc_message_expr ()
 185 {
 186   return 0;
 187 }
 188
 189 int
 190 recognize_objc_keyword ()
 191 {
 192   return 0;
 193 }
 194
 195 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 196
 197 tree
 198 lookup_objc_ivar (id)
 199      tree id ATTRIBUTE_UNUSED;
 200 {
 201   return 0;
 202 }
 203
 204 void
 205 finish_file ()
 206 {
 207   c_objc_common_finish_file ();
 208 }