gcc/objc/objc-lang.c

   1 /* Language-dependent hooks for Objective-C.
   2    Copyright 2001, 2002, 2003, 2004 Free Software Foundation, Inc.
   3    Contributed by Ziemowit Laski  <zlaski@apple.com>
   4
   5 This file is part of GCC.
   6
   7 GCC is free software; you can redistribute it and/or modify
   8 it under the terms of the GNU General Public License as published by
   9 the Free Software Foundation; either version 2, or (at your option)
  10 any later version.
  11
  12 GCC is distributed in the hope that it will be useful,
  13 but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 GNU General Public License 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
  19 the Free Software Foundation, 59 Temple Place - Suite 330,
  20 Boston, MA 02111-1307, USA.  */
  21
  22 #include "config.h"
  23 #include "system.h"
  24 #include "coretypes.h"
  25 #include "tm.h"
  26 #include "tree.h"
  27 #include "c-tree.h"
  28 #include "c-common.h"
  29 #include "toplev.h"
  30 #include "objc-act.h"
  31 #include "langhooks.h"
  32 #include "langhooks-def.h"
  33
  34 enum c_language_kind c_language = clk_objc;
  35
  36 #undef LANG_HOOKS_NAME
  37 #define LANG_HOOKS_NAME "GNU Objective-C"
  38 #undef LANG_HOOKS_IDENTIFIER_SIZE
  39 #define LANG_HOOKS_IDENTIFIER_SIZE C_SIZEOF_STRUCT_LANG_IDENTIFIER
  40 #undef LANG_HOOKS_INIT
  41 #define LANG_HOOKS_INIT objc_init
  42 #undef LANG_HOOKS_FINISH
  43 #define LANG_HOOKS_FINISH c_common_finish
  44 #undef LANG_HOOKS_INIT_OPTIONS
  45 #define LANG_HOOKS_INIT_OPTIONS c_common_init_options
  46 #undef LANG_HOOKS_INITIALIZE_DIAGNOSTICS
  47 #define LANG_HOOKS_INITIALIZE_DIAGNOSTICS c_initialize_diagnostics
  48 #undef LANG_HOOKS_HANDLE_OPTION
  49 #define LANG_HOOKS_HANDLE_OPTION c_common_handle_option
  50 #undef LANG_HOOKS_HANDLE_FILENAME
  51 #define LANG_HOOKS_HANDLE_FILENAME c_common_handle_filename
  52 #undef LANG_HOOKS_MISSING_ARGUMENT
  53 #define LANG_HOOKS_MISSING_ARGUMENT c_common_missing_argument
  54 #undef LANG_HOOKS_POST_OPTIONS
  55 #define LANG_HOOKS_POST_OPTIONS c_common_post_options
  56 #undef LANG_HOOKS_GET_ALIAS_SET
  57 #define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
  58 #undef LANG_HOOKS_PARSE_FILE
  59 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  60 #undef LANG_HOOKS_EXPAND_EXPR
  61 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  62 #undef LANG_HOOKS_EXPAND_DECL
  63 #define LANG_HOOKS_EXPAND_DECL c_expand_decl
  64 #undef LANG_HOOKS_MARK_ADDRESSABLE
  65 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  66 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  67 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_objc_common_truthvalue_conversion
  68 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  69 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  70 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  71 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  72 #undef LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS
  73 #define LANG_HOOKS_REDUCE_BIT_FIELD_OPERATIONS true
  74 #undef LANG_HOOKS_STATICP
  75 #define LANG_HOOKS_STATICP c_staticp
  76 #undef LANG_HOOKS_NO_BODY_BLOCKS
  77 #define LANG_HOOKS_NO_BODY_BLOCKS true
  78 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  79 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  80 #undef LANG_HOOKS_PRINT_IDENTIFIER
  81 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  82 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
  83 #define LANG_HOOKS_DECL_PRINTABLE_NAME objc_printable_name
  84 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  85 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  86
  87 #undef LANG_HOOKS_FUNCTION_ENTER_NESTED
  88 #define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
  89 #undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
  90 #define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
  91 #undef LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P
  92 #define LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P c_missing_noreturn_ok_p
  93
  94 /* Attribute hooks.  */
  95 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
  96 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
  97 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
  98 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
  99
 100 /* Inlining hooks same as the C front end.  */
 101 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
 102 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
 103   c_cannot_inline_tree_fn
 104 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
 105 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
 106   c_disregard_inline_limits
 107 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
 108 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
 109   anon_aggr_type_p
 110 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
 111 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
 112   c_convert_parm_for_inlining
 113
 114 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
 115 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION c_expand_body
 116
 117 #undef LANG_HOOKS_TYPE_FOR_MODE
 118 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
 119 #undef LANG_HOOKS_TYPE_FOR_SIZE
 120 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
 121 #undef LANG_HOOKS_SIGNED_TYPE
 122 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
 123 #undef LANG_HOOKS_UNSIGNED_TYPE
 124 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 125 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 126 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 127 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 128 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 129 #undef LANG_HOOKS_TYPE_PROMOTES_TO
 130 #define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
 131 #undef  LANG_HOOKS_GIMPLIFY_EXPR
 132 #define LANG_HOOKS_GIMPLIFY_EXPR c_gimplify_expr
 133
 134 /* The C front end's scoping structure is very different from
 135    that expected by the language-independent code; it is best
 136    to disable getdecls.
 137    This means it must also provide its own write_globals.  */
 138
 139 #undef LANG_HOOKS_GETDECLS
 140 #define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
 141 #undef LANG_HOOKS_WRITE_GLOBALS
 142 #define LANG_HOOKS_WRITE_GLOBALS c_write_global_declarations
 143
 144 /* Each front end provides its own hooks, for toplev.c.  */
 145 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 146
 147 /* Define the special tree codes that we use.  */
 148
 149 /* Table indexed by tree code giving a string containing a character
 150    classifying the tree code.  */
 151
 152 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 153
 154 const char tree_code_type[] = {
 155 #include "tree.def"
 156   'x',
 157 #include "c-common.def"
 158   'x',
 159 #include "objc-tree.def"
 160 };
 161 #undef DEFTREECODE
 162
 163 /* Table indexed by tree code giving number of expression
 164    operands beyond the fixed part of the node structure.
 165    Not used for types or decls.  */
 166
 167 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 168
 169 const unsigned char tree_code_length[] = {
 170 #include "tree.def"
 171   0,
 172 #include "c-common.def"
 173   0,
 174 #include "objc-tree.def"
 175 };
 176 #undef DEFTREECODE
 177
 178 /* Names of tree components.
 179    Used for printing out the tree and error messages.  */
 180 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 181
 182 const char * const tree_code_name[] = {
 183 #include "tree.def"
 184   "@@dummy",
 185 #include "c-common.def"
 186   "@@dummy",
 187 #include "objc-tree.def"
 188 };
 189 #undef DEFTREECODE