1 /* Language-dependent hooks for C++. 2 Copyright 2001, 2002, 2004, 2007, 2008, 2009 Free Software Foundation, Inc. 3 Contributed by Alexandre Oliva <aoliva@redhat.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 3, 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 COPYING3. If not see 19 <http://www.gnu.org/licenses/>. */ 20 21 #include "config.h" 22 #include "system.h" 23 #include "coretypes.h" 24 #include "tm.h" 25 #include "tree.h" 26 #include "cp-tree.h" 27 #include "c-common.h" 28 #include "toplev.h" 29 #include "langhooks.h" 30 #include "langhooks-def.h" 31 #include "diagnostic.h" 32 #include "debug.h" 33 #include "cp-objcp-common.h" 34 #include "hashtab.h" 35 #include "except.h" 36 #include "expr.h" 37 38 enum c_language_kind c_language = clk_cxx; 39 static void cp_init_ts (void); 40 static const char * cxx_dwarf_name (tree t, int verbosity); 41 static enum classify_record cp_classify_record (tree type); 42 static tree cp_eh_personality (void); 43 44 /* Lang hooks common to C++ and ObjC++ are declared in cp/cp-objcp-common.h; 45 consequently, there should be very few hooks below. */ 46 47 #undef LANG_HOOKS_NAME 48 #define LANG_HOOKS_NAME "GNU C++" 49 #undef LANG_HOOKS_INIT 50 #define LANG_HOOKS_INIT cxx_init 51 #undef LANG_HOOKS_CLASSIFY_RECORD 52 #define LANG_HOOKS_CLASSIFY_RECORD cp_classify_record 53 #undef LANG_HOOKS_GENERIC_TYPE_P 54 #define LANG_HOOKS_GENERIC_TYPE_P class_tmpl_impl_spec_p 55 56 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS 57 #define LANG_HOOKS_GET_INNERMOST_GENERIC_PARMS \ 58 get_primary_template_innermost_parameters 59 #undef LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS 60 #define LANG_HOOKS_GET_INNERMOST_GENERIC_ARGS \ 61 get_template_innermost_arguments 62 #undef LANG_HOOKS_FUNCTION_PARAMETER_PACK_P 63 #define LANG_HOOKS_FUNCTION_PARAMETER_PACK_P \ 64 function_parameter_pack_p 65 #undef LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS 66 #define LANG_HOOKS_GET_ARGUMENT_PACK_ELEMS \ 67 get_template_argument_pack_elems 68 #undef LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P 69 #define LANG_HOOKS_GENERIC_GENERIC_PARAMETER_DECL_P \ 70 template_template_parameter_p 71 #undef LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P 72 #define LANG_HOOKS_FUNCTION_PARM_EXPANDED_FROM_PACK_P \ 73 function_parameter_expanded_from_pack_p 74 #undef LANG_HOOKS_GET_GENERIC_FUNCTION_DECL 75 #define LANG_HOOKS_GET_GENERIC_FUNCTION_DECL get_function_template_decl 76 #undef LANG_HOOKS_DECL_PRINTABLE_NAME 77 #define LANG_HOOKS_DECL_PRINTABLE_NAME cxx_printable_name 78 #undef LANG_HOOKS_DWARF_NAME 79 #define LANG_HOOKS_DWARF_NAME cxx_dwarf_name 80 #undef LANG_HOOKS_FOLD_OBJ_TYPE_REF 81 #define LANG_HOOKS_FOLD_OBJ_TYPE_REF cp_fold_obj_type_ref 82 #undef LANG_HOOKS_INIT_TS 83 #define LANG_HOOKS_INIT_TS cp_init_ts 84 #undef LANG_HOOKS_EH_PERSONALITY 85 #define LANG_HOOKS_EH_PERSONALITY cp_eh_personality 86 #undef LANG_HOOKS_EH_RUNTIME_TYPE 87 #define LANG_HOOKS_EH_RUNTIME_TYPE build_eh_type_type 88 89 /* Each front end provides its own lang hook initializer. */ 90 struct lang_hooks lang_hooks = LANG_HOOKS_INITIALIZER; 91 92 /* Lang hook routines common to C++ and ObjC++ appear in cp/cp-objcp-common.c; 93 there should be very few routines below. */ 94 95 /* The following function does something real, but only in Objective-C++. */ 96 97 tree 98 objcp_tsubst_copy_and_build (tree t ATTRIBUTE_UNUSED, 99 tree args ATTRIBUTE_UNUSED, 100 tsubst_flags_t complain ATTRIBUTE_UNUSED, 101 tree in_decl ATTRIBUTE_UNUSED, 102 bool function_p ATTRIBUTE_UNUSED) 103 { 104 return NULL_TREE; 105 } 106 107 108 static void 109 cp_init_ts (void) 110 { 111 tree_contains_struct[NAMESPACE_DECL][TS_DECL_NON_COMMON] = 1; 112 tree_contains_struct[USING_DECL][TS_DECL_NON_COMMON] = 1; 113 tree_contains_struct[TEMPLATE_DECL][TS_DECL_NON_COMMON] = 1; 114 115 tree_contains_struct[NAMESPACE_DECL][TS_DECL_WITH_VIS] = 1; 116 tree_contains_struct[USING_DECL][TS_DECL_WITH_VIS] = 1; 117 tree_contains_struct[TEMPLATE_DECL][TS_DECL_WITH_VIS] = 1; 118 119 tree_contains_struct[NAMESPACE_DECL][TS_DECL_WRTL] = 1; 120 tree_contains_struct[USING_DECL][TS_DECL_WRTL] = 1; 121 tree_contains_struct[TEMPLATE_DECL][TS_DECL_WRTL] = 1; 122 123 tree_contains_struct[NAMESPACE_DECL][TS_DECL_COMMON] = 1; 124 tree_contains_struct[USING_DECL][TS_DECL_COMMON] = 1; 125 tree_contains_struct[TEMPLATE_DECL][TS_DECL_COMMON] = 1; 126 127 tree_contains_struct[NAMESPACE_DECL][TS_DECL_MINIMAL] = 1; 128 tree_contains_struct[USING_DECL][TS_DECL_MINIMAL] = 1; 129 tree_contains_struct[TEMPLATE_DECL][TS_DECL_MINIMAL] = 1; 130 131 init_shadowed_var_for_decl (); 132 133 } 134 135 static const char * 136 cxx_dwarf_name (tree t, int verbosity) 137 { 138 gcc_assert (DECL_P (t)); 139 140 if (DECL_NAME (t) 141 && (ANON_AGGRNAME_P (DECL_NAME (t)) || LAMBDANAME_P (DECL_NAME (t)))) 142 return NULL; 143 if (verbosity >= 2) 144 return decl_as_string (t, 145 TFF_DECL_SPECIFIERS | TFF_UNQUALIFIED_NAME 146 | TFF_NO_OMIT_DEFAULT_TEMPLATE_ARGUMENTS); 147 148 return cxx_printable_name (t, verbosity); 149 } 150 151 static enum classify_record 152 cp_classify_record (tree type) 153 { 154 if (CLASSTYPE_DECLARED_CLASS (type)) 155 return RECORD_IS_CLASS; 156 157 return RECORD_IS_STRUCT; 158 } 159 160 void 161 finish_file (void) 162 { 163 } 164 165 static GTY(()) tree cp_eh_personality_decl; 166 167 static tree 168 cp_eh_personality (void) 169 { 170 if (!cp_eh_personality_decl) 171 { 172 if (!pragma_java_exceptions) 173 cp_eh_personality_decl 174 = build_personality_function (USING_SJLJ_EXCEPTIONS 175 ? "__gxx_personality_sj0" 176 : "__gxx_personality_v0"); 177 else 178 cp_eh_personality_decl 179 = build_personality_function (USING_SJLJ_EXCEPTIONS 180 ? "__gcj_personality_sj0" 181 : "__gcj_personality_v0"); 182 } 183 184 return cp_eh_personality_decl; 185 } 186 187 #include "gt-cp-cp-lang.h" 188 #include "gtype-cp.h" 189