]>
Commit | Line | Data |
---|---|---|
11bb4b27 | 1 | /* Some code common to C++ and ObjC++ front ends. |
2b1c5433 JJ |
2 | Copyright (C) 2004, 2007, 2008, 2009, 2010, 2011 |
3 | Free Software Foundation, Inc. | |
11bb4b27 ZL |
4 | Contributed by Ziemowit Laski <zlaski@apple.com> |
5 | ||
6 | This file is part of GCC. | |
7 | ||
8 | GCC is free software; you can redistribute it and/or modify it under | |
9 | the terms of the GNU General Public License as published by the Free | |
e77f031d | 10 | Software Foundation; either version 3, or (at your option) any later |
11bb4b27 ZL |
11 | version. |
12 | ||
13 | GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
14 | WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
15 | FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
16 | for more details. | |
17 | ||
18 | You should have received a copy of the GNU General Public License | |
e77f031d NC |
19 | along with GCC; see the file COPYING3. If not see |
20 | <http://www.gnu.org/licenses/>. */ | |
11bb4b27 ZL |
21 | |
22 | #include "config.h" | |
23 | #include "system.h" | |
24 | #include "coretypes.h" | |
25 | #include "tm.h" | |
26 | #include "tree.h" | |
27 | #include "cp-tree.h" | |
39dabefd | 28 | #include "c-family/c-common.h" |
11bb4b27 ZL |
29 | #include "langhooks.h" |
30 | #include "langhooks-def.h" | |
31 | #include "diagnostic.h" | |
32 | #include "debug.h" | |
33 | #include "cxx-pretty-print.h" | |
34 | #include "cp-objcp-common.h" | |
35 | ||
36 | /* Special routine to get the alias set for C++. */ | |
37 | ||
4862826d | 38 | alias_set_type |
11bb4b27 ZL |
39 | cxx_get_alias_set (tree t) |
40 | { | |
41 | if (IS_FAKE_BASE_TYPE (t)) | |
42 | /* The base variant of a type must be in the same alias set as the | |
43 | complete type. */ | |
44 | return get_alias_set (TYPE_CONTEXT (t)); | |
45 | ||
46 | /* Punt on PMFs until we canonicalize functions properly. */ | |
a489b1f0 RG |
47 | if (TYPE_PTRMEMFUNC_P (t) |
48 | || (POINTER_TYPE_P (t) | |
49 | && TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))) | |
11bb4b27 ZL |
50 | return 0; |
51 | ||
52 | return c_common_get_alias_set (t); | |
53 | } | |
54 | ||
55 | /* Called from check_global_declarations. */ | |
56 | ||
57 | bool | |
ac7d7749 | 58 | cxx_warn_unused_global_decl (const_tree decl) |
11bb4b27 ZL |
59 | { |
60 | if (TREE_CODE (decl) == FUNCTION_DECL && DECL_DECLARED_INLINE_P (decl)) | |
61 | return false; | |
62 | if (DECL_IN_SYSTEM_HEADER (decl)) | |
63 | return false; | |
64 | ||
65 | /* Const variables take the place of #defines in C++. */ | |
66 | if (TREE_CODE (decl) == VAR_DECL && TREE_READONLY (decl)) | |
67 | return false; | |
68 | ||
69 | return true; | |
70 | } | |
71 | ||
11bb4b27 ZL |
72 | /* Langhook for tree_size: determine size of our 'x' and 'c' nodes. */ |
73 | size_t | |
74 | cp_tree_size (enum tree_code code) | |
75 | { | |
76 | switch (code) | |
77 | { | |
0cbd7506 | 78 | case PTRMEM_CST: return sizeof (struct ptrmem_cst); |
11bb4b27 | 79 | case BASELINK: return sizeof (struct tree_baselink); |
0cbd7506 | 80 | case TEMPLATE_PARM_INDEX: return sizeof (template_parm_index); |
11bb4b27 | 81 | case DEFAULT_ARG: return sizeof (struct tree_default_arg); |
10261728 | 82 | case DEFERRED_NOEXCEPT: return sizeof (struct tree_deferred_noexcept); |
11bb4b27 | 83 | case OVERLOAD: return sizeof (struct tree_overload); |
55a3debe | 84 | case STATIC_ASSERT: return sizeof (struct tree_static_assert); |
5d80a306 DG |
85 | case TYPE_ARGUMENT_PACK: |
86 | case TYPE_PACK_EXPANSION: | |
87 | return sizeof (struct tree_common); | |
88 | ||
89 | case NONTYPE_ARGUMENT_PACK: | |
90 | case EXPR_PACK_EXPANSION: | |
91 | return sizeof (struct tree_exp); | |
92 | ||
93 | case ARGUMENT_PACK_SELECT: | |
94 | return sizeof (struct tree_argument_pack_select); | |
95 | ||
cb68ec50 PC |
96 | case TRAIT_EXPR: |
97 | return sizeof (struct tree_trait_expr); | |
98 | ||
d5f4eddd JM |
99 | case LAMBDA_EXPR: return sizeof (struct tree_lambda_expr); |
100 | ||
aa373032 DS |
101 | case TEMPLATE_INFO: return sizeof (struct tree_template_info); |
102 | ||
3ce4f9e4 ESR |
103 | case USERDEF_LITERAL: return sizeof (struct tree_userdef_literal); |
104 | ||
11bb4b27 ZL |
105 | default: |
106 | gcc_unreachable (); | |
107 | } | |
108 | /* NOTREACHED */ | |
109 | } | |
110 | ||
111 | /* Returns true if T is a variably modified type, in the sense of C99. | |
112 | FN is as passed to variably_modified_p. | |
113 | This routine needs only check cases that cannot be handled by the | |
114 | language-independent logic in tree.c. */ | |
115 | ||
116 | bool | |
117 | cp_var_mod_type_p (tree type, tree fn) | |
118 | { | |
119 | /* If TYPE is a pointer-to-member, it is variably modified if either | |
120 | the class or the member are variably modified. */ | |
121 | if (TYPE_PTR_TO_MEMBER_P (type)) | |
122 | return (variably_modified_type_p (TYPE_PTRMEM_CLASS_TYPE (type), fn) | |
123 | || variably_modified_type_p (TYPE_PTRMEM_POINTED_TO_TYPE (type), | |
124 | fn)); | |
125 | ||
126 | /* All other types are not variably modified. */ | |
127 | return false; | |
128 | } | |
129 | ||
130 | /* Construct a C++-aware pretty-printer for CONTEXT. It is assumed | |
131 | that CONTEXT->printer is an already constructed basic pretty_printer. */ | |
132 | void | |
133 | cxx_initialize_diagnostics (diagnostic_context *context) | |
134 | { | |
7a9bf9a4 JM |
135 | pretty_printer *base; |
136 | cxx_pretty_printer *pp; | |
137 | ||
138 | c_common_initialize_diagnostics (context); | |
139 | ||
140 | base = context->printer; | |
141 | pp = XNEW (cxx_pretty_printer); | |
11bb4b27 ZL |
142 | memcpy (pp_base (pp), base, sizeof (pretty_printer)); |
143 | pp_cxx_pretty_printer_init (pp); | |
144 | context->printer = (pretty_printer *) pp; | |
145 | ||
146 | /* It is safe to free this object because it was previously malloc()'d. */ | |
147 | free (base); | |
148 | } | |
149 | ||
65958285 ZL |
150 | /* This compares two types for equivalence ("compatible" in C-based languages). |
151 | This routine should only return 1 if it is sure. It should not be used | |
152 | in contexts where erroneously returning 0 causes problems. */ | |
153 | ||
154 | int | |
155 | cxx_types_compatible_p (tree x, tree y) | |
156 | { | |
cf7bc668 | 157 | return same_type_ignoring_top_level_qualifiers_p (x, y); |
65958285 ZL |
158 | } |
159 | ||
68599f33 DS |
160 | /* Return true if DECL is explicit member function. */ |
161 | ||
162 | bool | |
163 | cp_function_decl_explicit_p (tree decl) | |
164 | { | |
165 | return (decl | |
166 | && FUNCTION_FIRST_USER_PARMTYPE (decl) != void_list_node | |
2b1c5433 | 167 | && DECL_LANG_SPECIFIC (STRIP_TEMPLATE (decl)) |
68599f33 DS |
168 | && DECL_NONCONVERTING_P (decl)); |
169 | } | |
170 | ||
11bb4b27 ZL |
171 | /* Stubs to keep c-opts.c happy. */ |
172 | void | |
173 | push_file_scope (void) | |
174 | { | |
175 | } | |
176 | ||
177 | void | |
178 | pop_file_scope (void) | |
179 | { | |
180 | } | |
181 | ||
182 | /* c-pragma.c needs to query whether a decl has extern "C" linkage. */ | |
183 | bool | |
58f9752a | 184 | has_c_linkage (const_tree decl) |
11bb4b27 ZL |
185 | { |
186 | return DECL_EXTERN_C_P (decl); | |
187 | } | |
3ed8593d | 188 | |
53e030f1 | 189 | static GTY ((if_marked ("tree_decl_map_marked_p"), param_is (struct tree_decl_map))) |
3ed8593d AP |
190 | htab_t shadowed_var_for_decl; |
191 | ||
192 | /* Lookup a shadowed var for FROM, and return it if we find one. */ | |
193 | ||
3db45ab5 | 194 | tree |
3ed8593d AP |
195 | decl_shadowed_for_var_lookup (tree from) |
196 | { | |
53e030f1 | 197 | struct tree_decl_map *h, in; |
fc8600f9 | 198 | in.base.from = from; |
3ed8593d | 199 | |
53e030f1 JJ |
200 | h = (struct tree_decl_map *) |
201 | htab_find_with_hash (shadowed_var_for_decl, &in, DECL_UID (from)); | |
3ed8593d AP |
202 | if (h) |
203 | return h->to; | |
204 | return NULL_TREE; | |
205 | } | |
206 | ||
207 | /* Insert a mapping FROM->TO in the shadowed var hashtable. */ | |
208 | ||
209 | void | |
210 | decl_shadowed_for_var_insert (tree from, tree to) | |
211 | { | |
53e030f1 | 212 | struct tree_decl_map *h; |
3ed8593d AP |
213 | void **loc; |
214 | ||
a9429e29 | 215 | h = ggc_alloc_tree_decl_map (); |
fc8600f9 | 216 | h->base.from = from; |
3ed8593d | 217 | h->to = to; |
53e030f1 JJ |
218 | loc = htab_find_slot_with_hash (shadowed_var_for_decl, h, DECL_UID (from), |
219 | INSERT); | |
220 | *(struct tree_decl_map **) loc = h; | |
3ed8593d AP |
221 | } |
222 | ||
223 | void | |
224 | init_shadowed_var_for_decl (void) | |
225 | { | |
53e030f1 JJ |
226 | shadowed_var_for_decl = htab_create_ggc (512, tree_decl_map_hash, |
227 | tree_decl_map_eq, 0); | |
3ed8593d AP |
228 | } |
229 | ||
81f653d6 NF |
230 | void |
231 | cp_common_init_ts (void) | |
232 | { | |
233 | MARK_TS_DECL_NON_COMMON (NAMESPACE_DECL); | |
234 | MARK_TS_DECL_NON_COMMON (USING_DECL); | |
235 | MARK_TS_DECL_NON_COMMON (TEMPLATE_DECL); | |
236 | ||
237 | MARK_TS_COMMON (TEMPLATE_TEMPLATE_PARM); | |
238 | MARK_TS_COMMON (TEMPLATE_TYPE_PARM); | |
239 | MARK_TS_COMMON (TEMPLATE_PARM_INDEX); | |
240 | MARK_TS_COMMON (OVERLOAD); | |
241 | MARK_TS_COMMON (TEMPLATE_INFO); | |
81f653d6 NF |
242 | MARK_TS_COMMON (TYPENAME_TYPE); |
243 | MARK_TS_COMMON (TYPEOF_TYPE); | |
a0d260fc | 244 | MARK_TS_COMMON (UNDERLYING_TYPE); |
81f653d6 | 245 | MARK_TS_COMMON (BASELINK); |
81f653d6 | 246 | MARK_TS_COMMON (TYPE_PACK_EXPANSION); |
0dfef520 | 247 | MARK_TS_COMMON (TYPE_ARGUMENT_PACK); |
81f653d6 NF |
248 | MARK_TS_COMMON (DECLTYPE_TYPE); |
249 | MARK_TS_COMMON (BOUND_TEMPLATE_TEMPLATE_PARM); | |
250 | MARK_TS_COMMON (UNBOUND_CLASS_TEMPLATE); | |
81f653d6 | 251 | |
d26e5986 | 252 | MARK_TS_TYPED (EXPR_PACK_EXPANSION); |
1f18dbc6 | 253 | MARK_TS_TYPED (SWITCH_STMT); |
545f261b | 254 | MARK_TS_TYPED (IF_STMT); |
40e71fc7 NF |
255 | MARK_TS_TYPED (FOR_STMT); |
256 | MARK_TS_TYPED (RANGE_FOR_STMT); | |
81f653d6 NF |
257 | MARK_TS_TYPED (AGGR_INIT_EXPR); |
258 | MARK_TS_TYPED (EXPR_STMT); | |
259 | MARK_TS_TYPED (EH_SPEC_BLOCK); | |
260 | MARK_TS_TYPED (CLEANUP_STMT); | |
261 | MARK_TS_TYPED (SCOPE_REF); | |
262 | MARK_TS_TYPED (CAST_EXPR); | |
263 | MARK_TS_TYPED (NON_DEPENDENT_EXPR); | |
264 | MARK_TS_TYPED (MODOP_EXPR); | |
265 | MARK_TS_TYPED (TRY_BLOCK); | |
266 | MARK_TS_TYPED (THROW_EXPR); | |
267 | MARK_TS_TYPED (HANDLER); | |
268 | MARK_TS_TYPED (REINTERPRET_CAST_EXPR); | |
269 | MARK_TS_TYPED (CONST_CAST_EXPR); | |
270 | MARK_TS_TYPED (STATIC_CAST_EXPR); | |
271 | MARK_TS_TYPED (DYNAMIC_CAST_EXPR); | |
a4474a38 | 272 | MARK_TS_TYPED (IMPLICIT_CONV_EXPR); |
81f653d6 NF |
273 | MARK_TS_TYPED (TEMPLATE_ID_EXPR); |
274 | MARK_TS_TYPED (ARROW_EXPR); | |
275 | MARK_TS_TYPED (SIZEOF_EXPR); | |
276 | MARK_TS_TYPED (ALIGNOF_EXPR); | |
277 | MARK_TS_TYPED (AT_ENCODE_EXPR); | |
278 | MARK_TS_TYPED (UNARY_PLUS_EXPR); | |
279 | MARK_TS_TYPED (TRAIT_EXPR); | |
280 | MARK_TS_TYPED (TYPE_ARGUMENT_PACK); | |
281 | MARK_TS_TYPED (NOEXCEPT_EXPR); | |
282 | MARK_TS_TYPED (NONTYPE_ARGUMENT_PACK); | |
283 | MARK_TS_TYPED (WHILE_STMT); | |
284 | MARK_TS_TYPED (NEW_EXPR); | |
285 | MARK_TS_TYPED (VEC_NEW_EXPR); | |
286 | MARK_TS_TYPED (BREAK_STMT); | |
287 | MARK_TS_TYPED (MEMBER_REF); | |
288 | MARK_TS_TYPED (DOTSTAR_EXPR); | |
289 | MARK_TS_TYPED (DO_STMT); | |
290 | MARK_TS_TYPED (DELETE_EXPR); | |
291 | MARK_TS_TYPED (VEC_DELETE_EXPR); | |
292 | MARK_TS_TYPED (CONTINUE_STMT); | |
293 | MARK_TS_TYPED (TAG_DEFN); | |
294 | MARK_TS_TYPED (PSEUDO_DTOR_EXPR); | |
295 | MARK_TS_TYPED (TYPEID_EXPR); | |
296 | MARK_TS_TYPED (MUST_NOT_THROW_EXPR); | |
297 | MARK_TS_TYPED (STMT_EXPR); | |
298 | MARK_TS_TYPED (OFFSET_REF); | |
299 | MARK_TS_TYPED (OFFSETOF_EXPR); | |
300 | MARK_TS_TYPED (PTRMEM_CST); | |
301 | MARK_TS_TYPED (EMPTY_CLASS_EXPR); | |
302 | MARK_TS_TYPED (VEC_INIT_EXPR); | |
303 | MARK_TS_TYPED (USING_STMT); | |
304 | MARK_TS_TYPED (LAMBDA_EXPR); | |
4ac74df2 | 305 | MARK_TS_TYPED (CTOR_INITIALIZER); |
81f653d6 | 306 | } |
3ed8593d AP |
307 | |
308 | #include "gt-cp-cp-objcp-common.h" |