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