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111
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1 /* Language-dependent hooks for Objective-C++.
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2 Copyright (C) 2005-2017 Free Software Foundation, Inc.
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3 Contributed by Ziemowit Laski <zlaski@apple.com>
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4
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5 This file is part of GCC.
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6
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7 GCC is free software; you can redistribute it and/or modify
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8 it under the terms of the GNU General Public License as published by
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9 the Free Software Foundation; either version 3, or (at your option)
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10 any later version.
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11
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12 GCC is distributed in the hope that it will be useful,
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13 but WITHOUT ANY WARRANTY; without even the implied warranty of
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14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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15 GNU General Public License for more details.
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16
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17 You should have received a copy of the GNU General Public License
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18 along with GCC; see the file COPYING3. If not see
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19 <http://www.gnu.org/licenses/>. */
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20
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21 #include "config.h"
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22 #include "system.h"
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23 #include "coretypes.h"
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24 #include "cp-tree.h"
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25 #include "c-family/c-objc.h"
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26 #include "objc-act.h"
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27 #include "langhooks.h"
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28 #include "langhooks-def.h"
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29 #include "cp-objcp-common.h"
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30
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31 enum c_language_kind c_language = clk_objcxx;
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32 static void objcxx_init_ts (void);
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33
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34 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h;
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35 consequently, there should be very few hooks below. */
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36
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37 #undef LANG_HOOKS_NAME
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38 #define LANG_HOOKS_NAME "GNU Objective-C++"
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39 #undef LANG_HOOKS_INIT
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40 #define LANG_HOOKS_INIT objc_init
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41 #undef LANG_HOOKS_GIMPLIFY_EXPR
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42 #define LANG_HOOKS_GIMPLIFY_EXPR objc_gimplify_expr
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43 #undef LANG_HOOKS_INIT_TS
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44 #define LANG_HOOKS_INIT_TS objcxx_init_ts
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45
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46 /* Each front end provides its own lang hook initializer. */
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47 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER;
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48
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49 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c;
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50 there should be very few (if any) routines below. */
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51
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52 tree
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53 objcp_tsubst_copy_and_build (tree t, tree args, tsubst_flags_t complain,
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54 tree in_decl, bool function_p ATTRIBUTE_UNUSED)
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55 {
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56 #define RECURSE(NODE) \
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57 tsubst_copy_and_build (NODE, args, complain, in_decl, \
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58 /*function_p=*/false, \
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59 /*integral_constant_expression_p=*/false)
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60
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61 /* The following two can only occur in Objective-C++. */
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62
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63 switch ((int) TREE_CODE (t))
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64 {
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65 case MESSAGE_SEND_EXPR:
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66 return objc_finish_message_expr
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67 (RECURSE (TREE_OPERAND (t, 0)),
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68 TREE_OPERAND (t, 1), /* No need to expand the selector. */
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69 RECURSE (TREE_OPERAND (t, 2)), NULL);
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70
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71 case CLASS_REFERENCE_EXPR:
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72 return objc_get_class_reference
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73 (RECURSE (TREE_OPERAND (t, 0)));
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74
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75 default:
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76 break;
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77 }
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78
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79 /* Fall back to C++ processing. */
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80 return NULL_TREE;
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81
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82 #undef RECURSE
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83 }
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84
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85 static void
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86 objcxx_init_ts (void)
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87 {
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88 objc_common_init_ts ();
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89 cp_common_init_ts ();
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90
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91 init_shadowed_var_for_decl ();
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92 }
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93
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94 #include "gtype-objcp.h"
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