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_MARK_ADDRESSABLE
  58 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  59 #undef LANG_HOOKS_PARSE_FILE
  60 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  61 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  62 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
  63 #undef LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES
  64 #define LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES c_insert_default_attributes
  65 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  66 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  67 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  68 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  69 #undef LANG_HOOKS_STATICP
  70 #define LANG_HOOKS_STATICP c_staticp
  71 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  72 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  73 #undef LANG_HOOKS_PRINT_IDENTIFIER
  74 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  75 #undef LANG_HOOKS_SET_YYDEBUG
  76 #define LANG_HOOKS_SET_YYDEBUG c_set_yydebug
  77 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  78 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  79
  80 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  81 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  82   c_cannot_inline_tree_fn
  83 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
  84 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
  85   c_disregard_inline_limits
  86 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  87 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
  88   anon_aggr_type_p
  89 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
  90 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
  91   c_convert_parm_for_inlining
  92
  93 #undef LANG_HOOKS_TYPE_FOR_MODE
  94 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
  95 #undef LANG_HOOKS_TYPE_FOR_SIZE
  96 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
  97 #undef LANG_HOOKS_SIGNED_TYPE
  98 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
  99 #undef LANG_HOOKS_UNSIGNED_TYPE
 100 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 101 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 102 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 103 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 104 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 105
 106 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
 107
 108 /* Each front end provides its own.  */
 109 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 110
 111 /* Tree code classes.  */
 112
 113 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 114
 115 const char tree_code_type[] = {
 116 #include "tree.def"
 117   'x',
 118 #include "c-common.def"
 119 };
 120 #undef DEFTREECODE
 121
 122 /* Table indexed by tree code giving number of expression
 123    operands beyond the fixed part of the node structure.
 124    Not used for types or decls.  */
 125
 126 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 127
 128 const unsigned char tree_code_length[] = {
 129 #include "tree.def"
 130   0,
 131 #include "c-common.def"
 132 };
 133 #undef DEFTREECODE
 134
 135 /* Names of tree components.
 136    Used for printing out the tree and error messages.  */
 137 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 138
 139 const char *const tree_code_name[] = {
 140 #include "tree.def"
 141   "@@dummy",
 142 #include "c-common.def"
 143 };
 144 #undef DEFTREECODE
 145
 146 /* Post-switch processing.  */
 147 static void
 148 c_post_options ()
 149 {
 150   c_common_post_options ();
 151 }
 152
 153 static void
 154 c_init_options ()
 155 {
 156   c_common_init_options (clk_c);
 157 }
 158
 159 static const char *
 160 c_init (filename)
 161      const char *filename;
 162 {
 163   return c_objc_common_init (filename);
 164 }
 165
 166 /* Used by c-lex.c, but only for objc.  */
 167
 168 tree
 169 lookup_interface (arg)
 170      tree arg ATTRIBUTE_UNUSED;
 171 {
 172   return 0;
 173 }
 174
 175 tree
 176 is_class_name (arg)
 177     tree arg ATTRIBUTE_UNUSED;
 178 {
 179   return 0;
 180 }
 181
 182 void
 183 maybe_objc_check_decl (decl)
 184      tree decl ATTRIBUTE_UNUSED;
 185 {
 186 }
 187
 188 int
 189 maybe_objc_comptypes (lhs, rhs, reflexive)
 190      tree lhs ATTRIBUTE_UNUSED;
 191      tree rhs ATTRIBUTE_UNUSED;
 192      int reflexive ATTRIBUTE_UNUSED;
 193 {
 194   return -1;
 195 }
 196
 197 tree
 198 maybe_building_objc_message_expr ()
 199 {
 200   return 0;
 201 }
 202
 203 int
 204 recognize_objc_keyword ()
 205 {
 206   return 0;
 207 }
 208
 209 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 210
 211 tree
 212 lookup_objc_ivar (id)
 213      tree id ATTRIBUTE_UNUSED;
 214 {
 215   return 0;
 216 }
 217
 218 void
 219 finish_file ()
 220 {
 221   c_objc_common_finish_file ();
 222 }