gcc/objc/objc-lang.c

   1 /* Language-dependent hooks for Objective-C.
   2    Copyright 2001, 2002, 2003 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_HANDLE_OPTION
  47 #define LANG_HOOKS_HANDLE_OPTION c_common_handle_option
  48 #undef LANG_HOOKS_HANDLE_FILENAME
  49 #define LANG_HOOKS_HANDLE_FILENAME c_common_handle_filename
  50 #undef LANG_HOOKS_MISSING_ARGUMENT
  51 #define LANG_HOOKS_MISSING_ARGUMENT c_common_missing_argument
  52 #undef LANG_HOOKS_POST_OPTIONS
  53 #define LANG_HOOKS_POST_OPTIONS c_common_post_options
  54 #undef LANG_HOOKS_GET_ALIAS_SET
  55 #define LANG_HOOKS_GET_ALIAS_SET c_common_get_alias_set
  56 #undef LANG_HOOKS_SAFE_FROM_P
  57 #define LANG_HOOKS_SAFE_FROM_P c_safe_from_p
  58 #undef LANG_HOOKS_PARSE_FILE
  59 #define LANG_HOOKS_PARSE_FILE c_common_parse_file
  60 #undef LANG_HOOKS_CLEAR_BINDING_STACK
  61 #define LANG_HOOKS_CLEAR_BINDING_STACK lhd_do_nothing
  62 #undef LANG_HOOKS_EXPAND_EXPR
  63 #define LANG_HOOKS_EXPAND_EXPR c_expand_expr
  64 #undef LANG_HOOKS_EXPAND_DECL
  65 #define LANG_HOOKS_EXPAND_DECL c_expand_decl
  66 #undef LANG_HOOKS_MARK_ADDRESSABLE
  67 #define LANG_HOOKS_MARK_ADDRESSABLE c_mark_addressable
  68 #undef LANG_HOOKS_TRUTHVALUE_CONVERSION
  69 #define LANG_HOOKS_TRUTHVALUE_CONVERSION c_objc_common_truthvalue_conversion
  70 #undef LANG_HOOKS_FINISH_INCOMPLETE_DECL
  71 #define LANG_HOOKS_FINISH_INCOMPLETE_DECL c_finish_incomplete_decl
  72 #undef LANG_HOOKS_UNSAFE_FOR_REEVAL
  73 #define LANG_HOOKS_UNSAFE_FOR_REEVAL c_common_unsafe_for_reeval
  74 #undef LANG_HOOKS_STATICP
  75 #define LANG_HOOKS_STATICP c_staticp
  76 #undef LANG_HOOKS_SET_DECL_ASSEMBLER_NAME
  77 #define LANG_HOOKS_SET_DECL_ASSEMBLER_NAME c_static_assembler_name
  78 #undef LANG_HOOKS_NO_BODY_BLOCKS
  79 #define LANG_HOOKS_NO_BODY_BLOCKS true
  80 #undef LANG_HOOKS_DUP_LANG_SPECIFIC_DECL
  81 #define LANG_HOOKS_DUP_LANG_SPECIFIC_DECL c_dup_lang_specific_decl
  82 #undef LANG_HOOKS_PRINT_IDENTIFIER
  83 #define LANG_HOOKS_PRINT_IDENTIFIER c_print_identifier
  84 #undef LANG_HOOKS_DECL_PRINTABLE_NAME
  85 #define LANG_HOOKS_DECL_PRINTABLE_NAME objc_printable_name
  86 #undef LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL
  87 #define LANG_HOOKS_WARN_UNUSED_GLOBAL_DECL c_warn_unused_global_decl
  88
  89 #undef LANG_HOOKS_FUNCTION_ENTER_NESTED
  90 #define LANG_HOOKS_FUNCTION_ENTER_NESTED c_push_function_context
  91 #undef LANG_HOOKS_FUNCTION_LEAVE_NESTED
  92 #define LANG_HOOKS_FUNCTION_LEAVE_NESTED c_pop_function_context
  93 #undef LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P
  94 #define LANG_HOOKS_FUNCTION_MISSING_NORETURN_OK_P c_missing_noreturn_ok_p
  95
  96 /* Attribute hooks.  */
  97 #undef LANG_HOOKS_COMMON_ATTRIBUTE_TABLE
  98 #define LANG_HOOKS_COMMON_ATTRIBUTE_TABLE c_common_attribute_table
  99 #undef LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE
 100 #define LANG_HOOKS_FORMAT_ATTRIBUTE_TABLE c_common_format_attribute_table
 101
 102 /* Inlining hooks same as the C front end.  */
 103 #undef LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN
 104 #define LANG_HOOKS_TREE_INLINING_CANNOT_INLINE_TREE_FN \
 105   c_cannot_inline_tree_fn
 106 #undef LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS
 107 #define LANG_HOOKS_TREE_INLINING_DISREGARD_INLINE_LIMITS \
 108   c_disregard_inline_limits
 109 #undef LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P
 110 #define LANG_HOOKS_TREE_INLINING_ANON_AGGR_TYPE_P \
 111   anon_aggr_type_p
 112 #undef LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING
 113 #define LANG_HOOKS_TREE_INLINING_CONVERT_PARM_FOR_INLINING \
 114   c_convert_parm_for_inlining
 115 #undef LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P
 116 #define LANG_HOOKS_TREE_INLINING_TREE_CHAIN_MATTERS_P \
 117   c_tree_chain_matters_p
 118
 119 #undef LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION
 120 #define LANG_HOOKS_CALLGRAPH_EXPAND_FUNCTION c_expand_body
 121
 122 #undef LANG_HOOKS_TYPE_FOR_MODE
 123 #define LANG_HOOKS_TYPE_FOR_MODE c_common_type_for_mode
 124 #undef LANG_HOOKS_TYPE_FOR_SIZE
 125 #define LANG_HOOKS_TYPE_FOR_SIZE c_common_type_for_size
 126 #undef LANG_HOOKS_SIGNED_TYPE
 127 #define LANG_HOOKS_SIGNED_TYPE c_common_signed_type
 128 #undef LANG_HOOKS_UNSIGNED_TYPE
 129 #define LANG_HOOKS_UNSIGNED_TYPE c_common_unsigned_type
 130 #undef LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE
 131 #define LANG_HOOKS_SIGNED_OR_UNSIGNED_TYPE c_common_signed_or_unsigned_type
 132 #undef LANG_HOOKS_INCOMPLETE_TYPE_ERROR
 133 #define LANG_HOOKS_INCOMPLETE_TYPE_ERROR c_incomplete_type_error
 134 #undef LANG_HOOKS_TYPE_PROMOTES_TO
 135 #define LANG_HOOKS_TYPE_PROMOTES_TO c_type_promotes_to
 136 #undef  LANG_HOOKS_GIMPLIFY_EXPR
 137 #define LANG_HOOKS_GIMPLIFY_EXPR c_gimplify_expr
 138
 139 /* The C front end's scoping structure is very different from
 140    that expected by the language-independent code; it is best
 141    to disable all of pushlevel, poplevel, set_block, and getdecls.
 142    This means it must also provide its own write_globals.  */
 143
 144 #undef LANG_HOOKS_PUSHLEVEL
 145 #define LANG_HOOKS_PUSHLEVEL lhd_do_nothing_i
 146 #undef LANG_HOOKS_POPLEVEL
 147 #define LANG_HOOKS_POPLEVEL lhd_do_nothing_iii_return_null_tree
 148 #undef LANG_HOOKS_SET_BLOCK
 149 #define LANG_HOOKS_SET_BLOCK lhd_do_nothing_t
 150 #undef LANG_HOOKS_GETDECLS
 151 #define LANG_HOOKS_GETDECLS lhd_return_null_tree_v
 152 #undef LANG_HOOKS_WRITE_GLOBALS
 153 #define LANG_HOOKS_WRITE_GLOBALS c_write_global_declarations
 154
 155 /* Each front end provides its own hooks, for toplev.c.  */
 156 const struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
 157
 158 /* Define the special tree codes that we use.  */
 159
 160 /* Table indexed by tree code giving a string containing a character
 161    classifying the tree code.  */
 162
 163 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) TYPE,
 164
 165 const char tree_code_type[] = {
 166 #include "tree.def"
 167   'x',
 168 #include "c-common.def"
 169   'x',
 170 #include "objc-tree.def"
 171 };
 172 #undef DEFTREECODE
 173
 174 /* Table indexed by tree code giving number of expression
 175    operands beyond the fixed part of the node structure.
 176    Not used for types or decls.  */
 177
 178 #define DEFTREECODE(SYM, NAME, TYPE, LENGTH) LENGTH,
 179
 180 const unsigned char tree_code_length[] = {
 181 #include "tree.def"
 182   0,
 183 #include "c-common.def"
 184   0,
 185 #include "objc-tree.def"
 186 };
 187 #undef DEFTREECODE
 188
 189 /* Names of tree components.
 190    Used for printing out the tree and error messages.  */
 191 #define DEFTREECODE(SYM, NAME, TYPE, LEN) NAME,
 192
 193 const char * const tree_code_name[] = {
 194 #include "tree.def"
 195   "@@dummy",
 196 #include "c-common.def"
 197   "@@dummy",
 198 #include "objc-tree.def"
 199 };
 200 #undef DEFTREECODE