111
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1 /* Process the ObjC-specific declarations and variables for
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2 the Objective-C++ compiler.
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3 Copyright (C) 2005-2018 Free Software Foundation, Inc.
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4 Contributed by Ziemowit Laski <zlaski@apple.com>
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5
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6 This file is part of GCC.
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7
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8 GCC is free software; you can redistribute it and/or modify it under
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9 the terms of the GNU General Public License as published by the Free
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10 Software Foundation; either version 3, or (at your option) any later
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11 version.
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12
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13 GCC is distributed in the hope that it will be useful, but WITHOUT ANY
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14 WARRANTY; without even the implied warranty of MERCHANTABILITY or
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15 FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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16 for more details.
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17
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18 You should have received a copy of the GNU General Public License
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19 along with GCC; see the file COPYING3. If not see
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20 <http://www.gnu.org/licenses/>. */
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21
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22 #include "config.h"
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23 #include "system.h"
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24 #include "coretypes.h"
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25 #include "cp-tree.h"
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26
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27 #include "c-family/c-objc.h"
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28 #include "objcp-decl.h"
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29
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30 /* Hacks to simulate start_struct() and finish_struct(). */
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31
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32 tree
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33 objcp_start_struct (location_t loc ATTRIBUTE_UNUSED,
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34 enum tree_code code ATTRIBUTE_UNUSED, tree name)
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35 {
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36 tree s;
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37 /* The idea here is to mimic the actions that the C++ parser takes when
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38 constructing 'extern "C" struct NAME {'. */
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39 push_lang_context (lang_name_c);
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40
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41 if (!name)
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42 name = make_anon_name ();
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43
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44 s = xref_tag (record_type, name, ts_global, 0);
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45 CLASSTYPE_DECLARED_CLASS (s) = 0; /* this is a 'struct', not a 'class'. */
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46 xref_basetypes (s, NULL_TREE); /* no base classes here! */
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47
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48 return begin_class_definition (s);
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49 }
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50
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51 tree
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52 objcp_finish_struct (location_t loc ATTRIBUTE_UNUSED,
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53 tree t, tree fieldlist, tree attributes)
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54 {
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55 tree field, next_field;
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56
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57 for (field = fieldlist; field; field = next_field)
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58 {
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59 next_field = TREE_CHAIN (field); /* insert one field at a time; */
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60 TREE_CHAIN (field) = NULL_TREE; /* otherwise, grokfield croaks. */
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61 finish_member_declaration (field);
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62 }
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63 t = finish_struct (t, attributes);
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64
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65 /* If we are inside an @interface and are generating the list of
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66 ivars, we need to check for duplicate ivars.
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67 */
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68 if (fieldlist)
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69 objc_detect_field_duplicates (true);
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70
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71 pop_lang_context ();
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72
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73 return t;
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74 }
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75
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76 void
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77 objcp_finish_function (void)
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78 {
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79 /* The C++ flavor of 'finish_function' does not generate RTL -- one has
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80 to call 'expand_or_defer_fn' to do that. */
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81 expand_or_defer_fn (finish_function (0));
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82 }
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83
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84 tree
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85 objcp_xref_tag (enum tree_code code ATTRIBUTE_UNUSED, tree name)
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86 {
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87 return xref_tag (record_type, name, ts_global, false);
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88 }
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89
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90 int
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91 objcp_comptypes (tree type1, tree type2)
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92 {
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93 return comptypes (type1, type2, COMPARE_STRICT);
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94 }
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95
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96 tree
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97 objcp_begin_compound_stmt (int flags ATTRIBUTE_UNUSED)
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98 {
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99 return begin_compound_stmt (0);
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100 }
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101
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102 tree
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103 objcp_end_compound_stmt (tree stmt, int flags ATTRIBUTE_UNUSED)
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104 {
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105 /* The following has been snarfed from
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106 cp/semantics.c:finish_compound_stmt(). */
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107 if (TREE_CODE (stmt) == BIND_EXPR)
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108 BIND_EXPR_BODY (stmt) = do_poplevel (BIND_EXPR_BODY (stmt));
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109 else if (STATEMENT_LIST_NO_SCOPE (stmt))
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110 stmt = pop_stmt_list (stmt);
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111 else
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112 stmt = do_poplevel (stmt);
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113
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114 return stmt;
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115 }
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