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