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
  34 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
  35
  36 #undef LANG_HOOKS_NAME
  37 #define LANG_HOOKS_NAME "GNU C"
  38 #undef LANG_HOOKS_INIT
  39 #define LANG_HOOKS_INIT c_init
  40 #undef LANG_HOOKS_FINISH
  41 #define LANG_HOOKS_FINISH c_common_finish
  42 #undef LANG_HOOKS_INIT_OPTIONS
  43 #define LANG_HOOKS_INIT_OPTIONS c_init_options
  44 #undef LANG_HOOKS_DECODE_OPTION
  45 #define LANG_HOOKS_DECODE_OPTION c_decode_option
  46 #undef LANG_HOOKS_POST_OPTIONS
  47 #define LANG_HOOKS_POST_OPTIONS c_common_post_options
  48 #undef LANG_HOOKS_GET_ALIAS_SET
  49 #define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
  50 #undef LANG_HOOKS_SAFE_FROM_P
  51 #define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
  52 #undef LANG_HOOKS_MARK_TREE
  53 #define LANG_HOOKS_MARK_TREE c_mark_tree
  54 #undef LANG_HOOKS_EXPAND_EXPR
  55 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  56 #undef LANG_HOOKS_MARK_ADDRESSABLE
  57 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  58 #undef LANG_HOOKS_PARSE_FILE
  59 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  60 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  61 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
  62 #undef LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES
  63 #define LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES c_insert_default_attributes
  64 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  65 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  66 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  67 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  68 #undef LANG_HOOKS_STATICP
  69 #define LANG_HOOKS_STATICP c_staticp
  70 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  71 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  72 #undef LANG_HOOKS_PRINT_IDENTIFIER
  73 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  74 #undef LANG_HOOKS_FUNCTION_ENTER_NESTED
  75 #define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
  76 #undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
  77 #define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
  78 #undef LANG_HOOKS_FUNCTION_MARK
  79 #define LANG_HOOKS_FUNCTION_MARK c_mark_function_context
  80 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  81 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  82
  83 /* Attribute hooks.  */
  84 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
  85 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
  86 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
  87 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
  88
  89 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  90 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  91   c_cannot_inline_tree_fn
  92 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
  93 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
  94   c_disregard_inline_limits
  95 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  96 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
  97   anon_aggr_type_p
  98 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
  99 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
 100   c_convert_parm_for_inlining
 101
 102 #undef LANG_HOOKS_TYPE_FOR_MODE
 103 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
 104 #undef LANG_HOOKS_TYPE_FOR_SIZE
 105 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
 106 #undef LANG_HOOKS_SIGNED_TYPE
 107 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
 108 #undef LANG_HOOKS_UNSIGNED_TYPE
 109 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 110 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 111 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 112 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 113 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 114 #undef LANG_HOOKS_TYPE_PROMOTES_TO
 115 #define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
 116
 117 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
 118
 119 /* Each front end provides its own.  */
 120 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 121
 122 /* Tree code classes.  */
 123
 124 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 125
 126 const char tree_code_type[] = {
 127 #include "tree.def"
 128   'x',
 129 #include "c-common.def"
 130 };
 131 #undef DEFTREECODE
 132
 133 /* Table indexed by tree code giving number of expression
 134    operands beyond the fixed part of the node structure.
 135    Not used for types or decls.  */
 136
 137 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 138
 139 const unsigned char tree_code_length[] = {
 140 #include "tree.def"
 141   0,
 142 #include "c-common.def"
 143 };
 144 #undef DEFTREECODE
 145
 146 /* Names of tree components.
 147    Used for printing out the tree and error messages.  */
 148 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 149
 150 const char *const tree_code_name[] = {
 151 #include "tree.def"
 152   "@@dummy",
 153 #include "c-common.def"
 154 };
 155 #undef DEFTREECODE
 156
 157 static void
 158 c_init_options ()
 159 {
 160   c_common_init_options (clk_c);
 161 }
 162
 163 static const char *
 164 c_init (filename)
 165      const char *filename;
 166 {
 167   return c_objc_common_init (filename);
 168 }
 169
 170 /* Used by c-lex.c, but only for objc.  */
 171
 172 tree
 173 lookup_interface (arg)
 174      tree arg ATTRIBUTE_UNUSED;
 175 {
 176   return 0;
 177 }
 178
 179 tree
 180 is_class_name (arg)
 181     tree arg ATTRIBUTE_UNUSED;
 182 {
 183   return 0;
 184 }
 185
 186 void
 187 maybe_objc_check_decl (decl)
 188      tree decl ATTRIBUTE_UNUSED;
 189 {
 190 }
 191
 192 int
 193 maybe_objc_comptypes (lhs, rhs, reflexive)
 194      tree lhs ATTRIBUTE_UNUSED;
 195      tree rhs ATTRIBUTE_UNUSED;
 196      int reflexive ATTRIBUTE_UNUSED;
 197 {
 198   return -1;
 199 }
 200
 201 tree
 202 maybe_building_objc_message_expr ()
 203 {
 204   return 0;
 205 }
 206
 207 int
 208 recognize_objc_keyword ()
 209 {
 210   return 0;
 211 }
 212
 213 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 214
 215 tree
 216 lookup_objc_ivar (id)
 217      tree id ATTRIBUTE_UNUSED;
 218 {
 219   return 0;
 220 }
 221
 222 void
 223 finish_file ()
 224 {
 225   c_objc_common_finish_file ();
 226 }