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 "ggc.h"
  29 #include "langhooks.h"
  30 #include "langhooks-def.h"
  31
  32 static const char *c_init PARAMS ((const char *));
  33 static void c_init_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_common_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_EXPAND_EXPR
  54 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  55 #undef LANG_HOOKS_MARK_ADDRESSABLE
  56 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  57 #undef LANG_HOOKS_PARSE_FILE
  58 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  59 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  60 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_common_truthvalue_conversion
  61 #undef LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES
  62 #define LANG_HOOKS_INSERT_DEFAULT_ATTRIBUTES c_insert_default_attributes
  63 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  64 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  65 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  66 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  67 #undef LANG_HOOKS_STATICP
  68 #define LANG_HOOKS_STATICP c_staticp
  69 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  70 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  71 #undef LANG_HOOKS_PRINT_IDENTIFIER
  72 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  73 #undef LANG_HOOKS_FUNCTION_ENTER_NESTED
  74 #define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
  75 #undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
  76 #define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
  77 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  78 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  79
  80 /* Attribute hooks.  */
  81 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
  82 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
  83 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
  84 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
  85
  86 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
  87 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
  88   c_cannot_inline_tree_fn
  89 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
  90 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
  91   c_disregard_inline_limits
  92 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
  93 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
  94   anon_aggr_type_p
  95 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
  96 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
  97   c_convert_parm_for_inlining
  98
  99 #undef LANG_HOOKS_TYPE_FOR_MODE
 100 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
 101 #undef LANG_HOOKS_TYPE_FOR_SIZE
 102 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
 103 #undef LANG_HOOKS_SIGNED_TYPE
 104 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
 105 #undef LANG_HOOKS_UNSIGNED_TYPE
 106 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 107 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 108 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 109 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 110 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 111 #undef LANG_HOOKS_TYPE_PROMOTES_TO
 112 #define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
 113
 114 /* ### When changing hooks, consider if ObjC needs changing too!! ### */
 115
 116 /* Each front end provides its own.  */
 117 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 118
 119 /* Tree code classes.  */
 120
 121 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 122
 123 const char tree_code_type[] = {
 124 #include "tree.def"
 125   'x',
 126 #include "c-common.def"
 127 };
 128 #undef DEFTREECODE
 129
 130 /* Table indexed by tree code giving number of expression
 131    operands beyond the fixed part of the node structure.
 132    Not used for types or decls.  */
 133
 134 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 135
 136 const unsigned char tree_code_length[] = {
 137 #include "tree.def"
 138   0,
 139 #include "c-common.def"
 140 };
 141 #undef DEFTREECODE
 142
 143 /* Names of tree components.
 144    Used for printing out the tree and error messages.  */
 145 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 146
 147 const char *const tree_code_name[] = {
 148 #include "tree.def"
 149   "@@dummy",
 150 #include "c-common.def"
 151 };
 152 #undef DEFTREECODE
 153
 154 static void
 155 c_init_options ()
 156 {
 157   c_common_init_options (clk_c);
 158 }
 159
 160 static const char *
 161 c_init (filename)
 162      const char *filename;
 163 {
 164   return c_objc_common_init (filename);
 165 }
 166
 167 /* Used by c-lex.c, but only for objc.  */
 168
 169 tree
 170 lookup_interface (arg)
 171      tree arg ATTRIBUTE_UNUSED;
 172 {
 173   return 0;
 174 }
 175
 176 tree
 177 is_class_name (arg)
 178     tree arg ATTRIBUTE_UNUSED;
 179 {
 180   return 0;
 181 }
 182
 183 void
 184 maybe_objc_check_decl (decl)
 185      tree decl ATTRIBUTE_UNUSED;
 186 {
 187 }
 188
 189 int
 190 maybe_objc_comptypes (lhs, rhs, reflexive)
 191      tree lhs ATTRIBUTE_UNUSED;
 192      tree rhs ATTRIBUTE_UNUSED;
 193      int reflexive ATTRIBUTE_UNUSED;
 194 {
 195   return -1;
 196 }
 197
 198 tree
 199 maybe_building_objc_message_expr ()
 200 {
 201   return 0;
 202 }
 203
 204 int
 205 recognize_objc_keyword ()
 206 {
 207   return 0;
 208 }
 209
 210 /* Used by c-typeck.c (build_external_ref), but only for objc.  */
 211
 212 tree
 213 lookup_objc_ivar (id)
 214      tree id ATTRIBUTE_UNUSED;
 215 {
 216   return 0;
 217 }
 218
 219 void
 220 finish_file ()
 221 {
 222   c_objc_common_finish_file ();
 223 }
 224
 225 #include "gtype-c.h"