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ad321293 MM |
1 | /* Perform the semantic phase of parsing, i.e., the process of |
2 | building tree structure, checking semantic consistency, and | |
3 | building RTL. These routines are used both during actual parsing | |
4 | and during the instantiation of template functions. | |
5 | ||
dbbf88d1 NS |
6 | Copyright (C) 1998, 1999, 2000, 2001, 2002, |
7 | 2003 Free Software Foundation, Inc. | |
ad321293 MM |
8 | Written by Mark Mitchell (mmitchell@usa.net) based on code found |
9 | formerly in parse.y and pt.c. | |
10 | ||
f5adbb8d | 11 | This file is part of GCC. |
ad321293 | 12 | |
f5adbb8d | 13 | GCC is free software; you can redistribute it and/or modify it |
ad321293 MM |
14 | under the terms of the GNU General Public License as published by |
15 | the Free Software Foundation; either version 2, or (at your option) | |
16 | any later version. | |
17 | ||
f5adbb8d | 18 | GCC is distributed in the hope that it will be useful, but |
ad321293 MM |
19 | WITHOUT ANY WARRANTY; without even the implied warranty of |
20 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU | |
21 | General Public License for more details. | |
22 | ||
23 | You should have received a copy of the GNU General Public License | |
f5adbb8d | 24 | along with GCC; see the file COPYING. If not, write to the Free |
ad321293 MM |
25 | Software Foundation, 59 Temple Place - Suite 330, Boston, MA |
26 | 02111-1307, USA. */ | |
27 | ||
28 | #include "config.h" | |
8d052bc7 | 29 | #include "system.h" |
4977bab6 ZW |
30 | #include "coretypes.h" |
31 | #include "tm.h" | |
ad321293 MM |
32 | #include "tree.h" |
33 | #include "cp-tree.h" | |
25af8512 | 34 | #include "tree-inline.h" |
ad321293 MM |
35 | #include "except.h" |
36 | #include "lex.h" | |
12027a89 | 37 | #include "toplev.h" |
84df082b | 38 | #include "flags.h" |
d9b2d9da | 39 | #include "rtl.h" |
d6684bc8 | 40 | #include "expr.h" |
225ff119 | 41 | #include "output.h" |
ea11ca7e | 42 | #include "timevar.h" |
2b85879e | 43 | #include "debug.h" |
8cd2462c | 44 | #include "cgraph.h" |
ad321293 MM |
45 | |
46 | /* There routines provide a modular interface to perform many parsing | |
47 | operations. They may therefore be used during actual parsing, or | |
48 | during template instantiation, which may be regarded as a | |
49 | degenerate form of parsing. Since the current g++ parser is | |
50 | lacking in several respects, and will be reimplemented, we are | |
51 | attempting to move most code that is not directly related to | |
52 | parsing into this file; that will make implementing the new parser | |
53 | much easier since it will be able to make use of these routines. */ | |
54 | ||
3a978d72 NN |
55 | static tree maybe_convert_cond (tree); |
56 | static tree simplify_aggr_init_exprs_r (tree *, int *, void *); | |
57 | static void emit_associated_thunks (tree); | |
58 | static void genrtl_try_block (tree); | |
59 | static void genrtl_eh_spec_block (tree); | |
60 | static void genrtl_handler (tree); | |
61 | static void cp_expand_stmt (tree); | |
4985cde3 | 62 | |
558475f0 | 63 | |
527f0080 MM |
64 | /* Finish processing the COND, the SUBSTMT condition for STMT. */ |
65 | ||
c3af729a | 66 | #define FINISH_COND(COND, STMT, SUBSTMT) \ |
ed5511d9 | 67 | do { \ |
c3af729a | 68 | if (last_tree != (STMT)) \ |
ed5511d9 | 69 | { \ |
c3af729a GS |
70 | RECHAIN_STMTS (STMT, SUBSTMT); \ |
71 | if (!processing_template_decl) \ | |
72 | { \ | |
73 | (COND) = build_tree_list (SUBSTMT, COND); \ | |
74 | (SUBSTMT) = (COND); \ | |
75 | } \ | |
ed5511d9 MM |
76 | } \ |
77 | else \ | |
c3af729a | 78 | (SUBSTMT) = (COND); \ |
527f0080 | 79 | } while (0) |
35b1567d | 80 | |
8d241e0b KL |
81 | /* Deferred Access Checking Overview |
82 | --------------------------------- | |
83 | ||
84 | Most C++ expressions and declarations require access checking | |
85 | to be performed during parsing. However, in several cases, | |
86 | this has to be treated differently. | |
87 | ||
88 | For member declarations, access checking has to be deferred | |
89 | until more information about the declaration is known. For | |
90 | example: | |
91 | ||
92 | class A { | |
93 | typedef int X; | |
94 | public: | |
95 | X f(); | |
96 | }; | |
97 | ||
98 | A::X A::f(); | |
99 | A::X g(); | |
100 | ||
101 | When we are parsing the function return type `A::X', we don't | |
102 | really know if this is allowed until we parse the function name. | |
103 | ||
104 | Furthermore, some contexts require that access checking is | |
105 | never performed at all. These include class heads, and template | |
106 | instantiations. | |
107 | ||
108 | Typical use of access checking functions is described here: | |
109 | ||
110 | 1. When we enter a context that requires certain access checking | |
111 | mode, the function `push_deferring_access_checks' is called with | |
112 | DEFERRING argument specifying the desired mode. Access checking | |
113 | may be performed immediately (dk_no_deferred), deferred | |
114 | (dk_deferred), or not performed (dk_no_check). | |
115 | ||
116 | 2. When a declaration such as a type, or a variable, is encountered, | |
117 | the function `perform_or_defer_access_check' is called. It | |
118 | maintains a TREE_LIST of all deferred checks. | |
119 | ||
120 | 3. The global `current_class_type' or `current_function_decl' is then | |
121 | setup by the parser. `enforce_access' relies on these information | |
122 | to check access. | |
123 | ||
124 | 4. Upon exiting the context mentioned in step 1, | |
125 | `perform_deferred_access_checks' is called to check all declaration | |
126 | stored in the TREE_LIST. `pop_deferring_access_checks' is then | |
127 | called to restore the previous access checking mode. | |
128 | ||
129 | In case of parsing error, we simply call `pop_deferring_access_checks' | |
130 | without `perform_deferred_access_checks'. */ | |
131 | ||
cf22909c KL |
132 | /* Data for deferred access checking. */ |
133 | static GTY(()) deferred_access *deferred_access_stack; | |
134 | static GTY(()) deferred_access *deferred_access_free_list; | |
135 | ||
136 | /* Save the current deferred access states and start deferred | |
137 | access checking iff DEFER_P is true. */ | |
138 | ||
8d241e0b | 139 | void push_deferring_access_checks (deferring_kind deferring) |
cf22909c KL |
140 | { |
141 | deferred_access *d; | |
142 | ||
78757caa KL |
143 | /* For context like template instantiation, access checking |
144 | disabling applies to all nested context. */ | |
145 | if (deferred_access_stack | |
146 | && deferred_access_stack->deferring_access_checks_kind == dk_no_check) | |
147 | deferring = dk_no_check; | |
148 | ||
cf22909c KL |
149 | /* Recycle previously used free store if available. */ |
150 | if (deferred_access_free_list) | |
151 | { | |
152 | d = deferred_access_free_list; | |
153 | deferred_access_free_list = d->next; | |
154 | } | |
155 | else | |
c68b0a84 | 156 | d = ggc_alloc (sizeof (deferred_access)); |
cf22909c KL |
157 | |
158 | d->next = deferred_access_stack; | |
159 | d->deferred_access_checks = NULL_TREE; | |
8d241e0b | 160 | d->deferring_access_checks_kind = deferring; |
cf22909c KL |
161 | deferred_access_stack = d; |
162 | } | |
163 | ||
164 | /* Resume deferring access checks again after we stopped doing | |
165 | this previously. */ | |
166 | ||
167 | void resume_deferring_access_checks (void) | |
168 | { | |
8d241e0b KL |
169 | if (deferred_access_stack->deferring_access_checks_kind == dk_no_deferred) |
170 | deferred_access_stack->deferring_access_checks_kind = dk_deferred; | |
cf22909c KL |
171 | } |
172 | ||
173 | /* Stop deferring access checks. */ | |
174 | ||
175 | void stop_deferring_access_checks (void) | |
176 | { | |
8d241e0b KL |
177 | if (deferred_access_stack->deferring_access_checks_kind == dk_deferred) |
178 | deferred_access_stack->deferring_access_checks_kind = dk_no_deferred; | |
cf22909c KL |
179 | } |
180 | ||
181 | /* Discard the current deferred access checks and restore the | |
182 | previous states. */ | |
183 | ||
184 | void pop_deferring_access_checks (void) | |
185 | { | |
186 | deferred_access *d = deferred_access_stack; | |
187 | deferred_access_stack = d->next; | |
188 | ||
189 | /* Remove references to access checks TREE_LIST. */ | |
190 | d->deferred_access_checks = NULL_TREE; | |
191 | ||
192 | /* Store in free list for later use. */ | |
193 | d->next = deferred_access_free_list; | |
194 | deferred_access_free_list = d; | |
195 | } | |
196 | ||
197 | /* Returns a TREE_LIST representing the deferred checks. | |
198 | The TREE_PURPOSE of each node is the type through which the | |
199 | access occurred; the TREE_VALUE is the declaration named. | |
200 | */ | |
201 | ||
202 | tree get_deferred_access_checks (void) | |
203 | { | |
204 | return deferred_access_stack->deferred_access_checks; | |
205 | } | |
206 | ||
207 | /* Take current deferred checks and combine with the | |
208 | previous states if we also defer checks previously. | |
209 | Otherwise perform checks now. */ | |
210 | ||
211 | void pop_to_parent_deferring_access_checks (void) | |
212 | { | |
213 | tree deferred_check = get_deferred_access_checks (); | |
214 | deferred_access *d1 = deferred_access_stack; | |
215 | deferred_access *d2 = deferred_access_stack->next; | |
216 | deferred_access *d3 = deferred_access_stack->next->next; | |
217 | ||
218 | /* Temporary swap the order of the top two states, just to make | |
219 | sure the garbage collector will not reclaim the memory during | |
220 | processing below. */ | |
221 | deferred_access_stack = d2; | |
222 | d2->next = d1; | |
223 | d1->next = d3; | |
224 | ||
225 | for ( ; deferred_check; deferred_check = TREE_CHAIN (deferred_check)) | |
226 | /* Perform deferred check if required. */ | |
227 | perform_or_defer_access_check (TREE_PURPOSE (deferred_check), | |
228 | TREE_VALUE (deferred_check)); | |
229 | ||
230 | deferred_access_stack = d1; | |
231 | d1->next = d2; | |
232 | d2->next = d3; | |
233 | pop_deferring_access_checks (); | |
234 | } | |
235 | ||
25903d03 KL |
236 | /* Perform the deferred access checks. |
237 | ||
238 | After performing the checks, we still have to keep the list | |
239 | `deferred_access_stack->deferred_access_checks' since we may want | |
240 | to check access for them again later in a different context. | |
241 | For example: | |
242 | ||
243 | class A { | |
244 | typedef int X; | |
245 | static X a; | |
246 | }; | |
247 | A::X A::a, x; // No error for `A::a', error for `x' | |
248 | ||
249 | We have to perform deferred access of `A::X', first with `A::a', | |
250 | next with `x'. */ | |
cf22909c KL |
251 | |
252 | void perform_deferred_access_checks (void) | |
253 | { | |
254 | tree deferred_check; | |
255 | for (deferred_check = deferred_access_stack->deferred_access_checks; | |
256 | deferred_check; | |
257 | deferred_check = TREE_CHAIN (deferred_check)) | |
258 | /* Check access. */ | |
259 | enforce_access (TREE_PURPOSE (deferred_check), | |
260 | TREE_VALUE (deferred_check)); | |
cf22909c KL |
261 | } |
262 | ||
263 | /* Defer checking the accessibility of DECL, when looked up in | |
6df5158a | 264 | BINFO. */ |
cf22909c | 265 | |
6df5158a | 266 | void perform_or_defer_access_check (tree binfo, tree decl) |
cf22909c KL |
267 | { |
268 | tree check; | |
269 | ||
6df5158a NS |
270 | my_friendly_assert (TREE_CODE (binfo) == TREE_VEC, 20030623); |
271 | ||
cf22909c | 272 | /* If we are not supposed to defer access checks, just check now. */ |
8d241e0b | 273 | if (deferred_access_stack->deferring_access_checks_kind == dk_no_deferred) |
cf22909c | 274 | { |
6df5158a | 275 | enforce_access (binfo, decl); |
cf22909c KL |
276 | return; |
277 | } | |
8d241e0b KL |
278 | /* Exit if we are in a context that no access checking is performed. */ |
279 | else if (deferred_access_stack->deferring_access_checks_kind == dk_no_check) | |
280 | return; | |
cf22909c KL |
281 | |
282 | /* See if we are already going to perform this check. */ | |
283 | for (check = deferred_access_stack->deferred_access_checks; | |
284 | check; | |
285 | check = TREE_CHAIN (check)) | |
6df5158a | 286 | if (TREE_VALUE (check) == decl && TREE_PURPOSE (check) == binfo) |
cf22909c KL |
287 | return; |
288 | /* If not, record the check. */ | |
289 | deferred_access_stack->deferred_access_checks | |
6df5158a | 290 | = tree_cons (binfo, decl, |
cf22909c KL |
291 | deferred_access_stack->deferred_access_checks); |
292 | } | |
293 | ||
838dfd8a | 294 | /* Returns nonzero if the current statement is a full expression, |
f2c5f623 BC |
295 | i.e. temporaries created during that statement should be destroyed |
296 | at the end of the statement. */ | |
35b1567d | 297 | |
f2c5f623 | 298 | int |
3a978d72 | 299 | stmts_are_full_exprs_p (void) |
f2c5f623 | 300 | { |
ae499cce MM |
301 | return current_stmt_tree ()->stmts_are_full_exprs_p; |
302 | } | |
303 | ||
304 | /* Returns the stmt_tree (if any) to which statements are currently | |
305 | being added. If there is no active statement-tree, NULL is | |
306 | returned. */ | |
307 | ||
308 | stmt_tree | |
3a978d72 | 309 | current_stmt_tree (void) |
ae499cce MM |
310 | { |
311 | return (cfun | |
e2500fed | 312 | ? &cfun->language->base.x_stmt_tree |
ae499cce | 313 | : &scope_chain->x_stmt_tree); |
f2c5f623 | 314 | } |
35b1567d | 315 | |
f2c5f623 BC |
316 | /* Nonzero if TYPE is an anonymous union or struct type. We have to use a |
317 | flag for this because "A union for which objects or pointers are | |
318 | declared is not an anonymous union" [class.union]. */ | |
35b1567d | 319 | |
f2c5f623 | 320 | int |
3a978d72 | 321 | anon_aggr_type_p (tree node) |
35b1567d | 322 | { |
e2500fed | 323 | return ANON_AGGR_TYPE_P (node); |
35b1567d BC |
324 | } |
325 | ||
f2c5f623 | 326 | /* Finish a scope. */ |
35b1567d BC |
327 | |
328 | tree | |
3a978d72 | 329 | do_poplevel (void) |
35b1567d BC |
330 | { |
331 | tree block = NULL_TREE; | |
332 | ||
f2c5f623 | 333 | if (stmts_are_full_exprs_p ()) |
35b1567d | 334 | { |
50e60bc3 | 335 | tree scope_stmts = NULL_TREE; |
f2c5f623 | 336 | |
35b1567d | 337 | block = poplevel (kept_level_p (), 1, 0); |
9f175208 | 338 | if (!processing_template_decl) |
35b1567d | 339 | { |
9f175208 JM |
340 | /* This needs to come after the poplevel so that partial scopes |
341 | are properly nested. */ | |
342 | scope_stmts = add_scope_stmt (/*begin_p=*/0, /*partial_p=*/0); | |
343 | if (block) | |
344 | { | |
345 | SCOPE_STMT_BLOCK (TREE_PURPOSE (scope_stmts)) = block; | |
346 | SCOPE_STMT_BLOCK (TREE_VALUE (scope_stmts)) = block; | |
347 | } | |
35b1567d BC |
348 | } |
349 | } | |
350 | ||
351 | return block; | |
352 | } | |
353 | ||
f2c5f623 | 354 | /* Begin a new scope. */ |
35b1567d BC |
355 | |
356 | void | |
92bc1323 | 357 | do_pushlevel (scope_kind sk) |
35b1567d | 358 | { |
f2c5f623 | 359 | if (stmts_are_full_exprs_p ()) |
35b1567d | 360 | { |
f2c5f623 BC |
361 | if (!processing_template_decl) |
362 | add_scope_stmt (/*begin_p=*/1, /*partial_p=*/0); | |
ac20c67a | 363 | begin_scope (sk, NULL); |
35b1567d BC |
364 | } |
365 | } | |
366 | ||
35b1567d BC |
367 | /* Finish a goto-statement. */ |
368 | ||
3e4d04a1 | 369 | tree |
3a978d72 | 370 | finish_goto_stmt (tree destination) |
35b1567d BC |
371 | { |
372 | if (TREE_CODE (destination) == IDENTIFIER_NODE) | |
373 | destination = lookup_label (destination); | |
374 | ||
375 | /* We warn about unused labels with -Wunused. That means we have to | |
376 | mark the used labels as used. */ | |
377 | if (TREE_CODE (destination) == LABEL_DECL) | |
378 | TREE_USED (destination) = 1; | |
fc2b8477 MM |
379 | else |
380 | { | |
381 | /* The DESTINATION is being used as an rvalue. */ | |
382 | if (!processing_template_decl) | |
383 | destination = decay_conversion (destination); | |
384 | /* We don't inline calls to functions with computed gotos. | |
385 | Those functions are typically up to some funny business, | |
386 | and may be depending on the labels being at particular | |
387 | addresses, or some such. */ | |
388 | DECL_UNINLINABLE (current_function_decl) = 1; | |
389 | } | |
35b1567d BC |
390 | |
391 | check_goto (destination); | |
392 | ||
3e4d04a1 | 393 | return add_stmt (build_stmt (GOTO_STMT, destination)); |
35b1567d BC |
394 | } |
395 | ||
ed5511d9 MM |
396 | /* COND is the condition-expression for an if, while, etc., |
397 | statement. Convert it to a boolean value, if appropriate. */ | |
398 | ||
8ce33230 | 399 | static tree |
3a978d72 | 400 | maybe_convert_cond (tree cond) |
ed5511d9 MM |
401 | { |
402 | /* Empty conditions remain empty. */ | |
403 | if (!cond) | |
404 | return NULL_TREE; | |
405 | ||
406 | /* Wait until we instantiate templates before doing conversion. */ | |
407 | if (processing_template_decl) | |
408 | return cond; | |
409 | ||
410 | /* Do the conversion. */ | |
411 | cond = convert_from_reference (cond); | |
412 | return condition_conversion (cond); | |
413 | } | |
414 | ||
9bfadf57 | 415 | /* Finish an expression-statement, whose EXPRESSION is as indicated. */ |
a7e4cfa0 | 416 | |
3e4d04a1 | 417 | tree |
3a978d72 | 418 | finish_expr_stmt (tree expr) |
ad321293 | 419 | { |
3e4d04a1 RH |
420 | tree r = NULL_TREE; |
421 | ||
ce4a0391 | 422 | if (expr != NULL_TREE) |
ad321293 | 423 | { |
a5bcc582 | 424 | if (!processing_template_decl) |
35b1567d | 425 | expr = convert_to_void (expr, "statement"); |
47d4c811 NS |
426 | else if (!type_dependent_expression_p (expr)) |
427 | convert_to_void (build_non_dependent_expr (expr), "statement"); | |
35b1567d | 428 | |
3e4d04a1 | 429 | r = add_stmt (build_stmt (EXPR_STMT, expr)); |
35b1567d | 430 | } |
364460b6 | 431 | |
35b1567d | 432 | finish_stmt (); |
558475f0 | 433 | |
3e4d04a1 | 434 | return r; |
35b1567d BC |
435 | } |
436 | ||
35b1567d | 437 | |
ad321293 MM |
438 | /* Begin an if-statement. Returns a newly created IF_STMT if |
439 | appropriate. */ | |
440 | ||
441 | tree | |
3a978d72 | 442 | begin_if_stmt (void) |
ad321293 MM |
443 | { |
444 | tree r; | |
92bc1323 | 445 | do_pushlevel (sk_block); |
0dfdeca6 | 446 | r = build_stmt (IF_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
ae499cce | 447 | add_stmt (r); |
ad321293 MM |
448 | return r; |
449 | } | |
450 | ||
451 | /* Process the COND of an if-statement, which may be given by | |
452 | IF_STMT. */ | |
453 | ||
454 | void | |
3a978d72 | 455 | finish_if_stmt_cond (tree cond, tree if_stmt) |
ad321293 | 456 | { |
ed5511d9 | 457 | cond = maybe_convert_cond (cond); |
35b1567d | 458 | FINISH_COND (cond, if_stmt, IF_COND (if_stmt)); |
ad321293 MM |
459 | } |
460 | ||
461 | /* Finish the then-clause of an if-statement, which may be given by | |
462 | IF_STMT. */ | |
463 | ||
464 | tree | |
3a978d72 | 465 | finish_then_clause (tree if_stmt) |
ad321293 | 466 | { |
35b1567d | 467 | RECHAIN_STMTS (if_stmt, THEN_CLAUSE (if_stmt)); |
35b1567d | 468 | return if_stmt; |
ad321293 MM |
469 | } |
470 | ||
471 | /* Begin the else-clause of an if-statement. */ | |
472 | ||
473 | void | |
3a978d72 | 474 | begin_else_clause (void) |
ad321293 | 475 | { |
ad321293 MM |
476 | } |
477 | ||
478 | /* Finish the else-clause of an if-statement, which may be given by | |
479 | IF_STMT. */ | |
480 | ||
481 | void | |
3a978d72 | 482 | finish_else_clause (tree if_stmt) |
ad321293 | 483 | { |
35b1567d | 484 | RECHAIN_STMTS (if_stmt, ELSE_CLAUSE (if_stmt)); |
ad321293 MM |
485 | } |
486 | ||
dfbb4f34 | 487 | /* Finish an if-statement. */ |
ad321293 MM |
488 | |
489 | void | |
3a978d72 | 490 | finish_if_stmt (void) |
ad321293 | 491 | { |
ad321293 | 492 | finish_stmt (); |
5d764395 | 493 | do_poplevel (); |
35b1567d BC |
494 | } |
495 | ||
ad321293 MM |
496 | /* Begin a while-statement. Returns a newly created WHILE_STMT if |
497 | appropriate. */ | |
498 | ||
499 | tree | |
3a978d72 | 500 | begin_while_stmt (void) |
ad321293 MM |
501 | { |
502 | tree r; | |
0dfdeca6 | 503 | r = build_stmt (WHILE_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 504 | add_stmt (r); |
92bc1323 | 505 | do_pushlevel (sk_block); |
ad321293 MM |
506 | return r; |
507 | } | |
508 | ||
27d26ee7 | 509 | /* Process the COND of a while-statement, which may be given by |
ad321293 MM |
510 | WHILE_STMT. */ |
511 | ||
512 | void | |
3a978d72 | 513 | finish_while_stmt_cond (tree cond, tree while_stmt) |
ad321293 | 514 | { |
ed5511d9 | 515 | cond = maybe_convert_cond (cond); |
5275f2bf JM |
516 | if (processing_template_decl) |
517 | /* Don't mess with condition decls in a template. */ | |
518 | FINISH_COND (cond, while_stmt, WHILE_COND (while_stmt)); | |
519 | else if (getdecls () == NULL_TREE) | |
5d764395 JM |
520 | /* It was a simple condition; install it. */ |
521 | WHILE_COND (while_stmt) = cond; | |
522 | else | |
523 | { | |
524 | /* If there was a declaration in the condition, we can't leave it | |
525 | there; transform | |
526 | while (A x = 42) { } | |
527 | to | |
528 | while (true) { A x = 42; if (!x) break; } */ | |
529 | tree if_stmt; | |
530 | WHILE_COND (while_stmt) = boolean_true_node; | |
531 | ||
532 | if_stmt = begin_if_stmt (); | |
533 | cond = build_unary_op (TRUTH_NOT_EXPR, cond, 0); | |
534 | finish_if_stmt_cond (cond, if_stmt); | |
535 | finish_break_stmt (); | |
536 | finish_then_clause (if_stmt); | |
537 | finish_if_stmt (); | |
538 | } | |
ad321293 MM |
539 | } |
540 | ||
541 | /* Finish a while-statement, which may be given by WHILE_STMT. */ | |
542 | ||
543 | void | |
3a978d72 | 544 | finish_while_stmt (tree while_stmt) |
ad321293 MM |
545 | { |
546 | do_poplevel (); | |
35b1567d | 547 | RECHAIN_STMTS (while_stmt, WHILE_BODY (while_stmt)); |
ad321293 MM |
548 | finish_stmt (); |
549 | } | |
550 | ||
551 | /* Begin a do-statement. Returns a newly created DO_STMT if | |
552 | appropriate. */ | |
553 | ||
554 | tree | |
3a978d72 | 555 | begin_do_stmt (void) |
ad321293 | 556 | { |
0dfdeca6 | 557 | tree r = build_stmt (DO_STMT, NULL_TREE, NULL_TREE); |
ae499cce | 558 | add_stmt (r); |
35b1567d | 559 | return r; |
ad321293 MM |
560 | } |
561 | ||
562 | /* Finish the body of a do-statement, which may be given by DO_STMT. */ | |
563 | ||
564 | void | |
3a978d72 | 565 | finish_do_body (tree do_stmt) |
ad321293 | 566 | { |
35b1567d | 567 | RECHAIN_STMTS (do_stmt, DO_BODY (do_stmt)); |
ad321293 MM |
568 | } |
569 | ||
570 | /* Finish a do-statement, which may be given by DO_STMT, and whose | |
571 | COND is as indicated. */ | |
572 | ||
573 | void | |
3a978d72 | 574 | finish_do_stmt (tree cond, tree do_stmt) |
ad321293 | 575 | { |
ed5511d9 | 576 | cond = maybe_convert_cond (cond); |
35b1567d BC |
577 | DO_COND (do_stmt) = cond; |
578 | finish_stmt (); | |
579 | } | |
ed5511d9 | 580 | |
ad321293 MM |
581 | /* Finish a return-statement. The EXPRESSION returned, if any, is as |
582 | indicated. */ | |
583 | ||
3e4d04a1 | 584 | tree |
3a978d72 | 585 | finish_return_stmt (tree expr) |
ad321293 | 586 | { |
3e4d04a1 RH |
587 | tree r; |
588 | ||
efc7052d | 589 | expr = check_return_expr (expr); |
35b1567d | 590 | if (!processing_template_decl) |
efee38a9 | 591 | { |
a0de9d20 | 592 | if (DECL_DESTRUCTOR_P (current_function_decl)) |
efee38a9 MM |
593 | { |
594 | /* Similarly, all destructors must run destructors for | |
595 | base-classes before returning. So, all returns in a | |
dfbb4f34 | 596 | destructor get sent to the DTOR_LABEL; finish_function emits |
efee38a9 | 597 | code to return a value there. */ |
3e4d04a1 | 598 | return finish_goto_stmt (dtor_label); |
efee38a9 MM |
599 | } |
600 | } | |
3e4d04a1 | 601 | r = add_stmt (build_stmt (RETURN_STMT, expr)); |
35b1567d | 602 | finish_stmt (); |
3e4d04a1 RH |
603 | |
604 | return r; | |
35b1567d | 605 | } |
efee38a9 | 606 | |
ad321293 MM |
607 | /* Begin a for-statement. Returns a new FOR_STMT if appropriate. */ |
608 | ||
609 | tree | |
3a978d72 | 610 | begin_for_stmt (void) |
ad321293 MM |
611 | { |
612 | tree r; | |
613 | ||
0dfdeca6 BC |
614 | r = build_stmt (FOR_STMT, NULL_TREE, NULL_TREE, |
615 | NULL_TREE, NULL_TREE); | |
f2c5f623 | 616 | NEW_FOR_SCOPE_P (r) = flag_new_for_scope > 0; |
f2c5f623 | 617 | if (NEW_FOR_SCOPE_P (r)) |
92bc1323 | 618 | do_pushlevel (sk_for); |
18ba380b | 619 | add_stmt (r); |
ad321293 MM |
620 | |
621 | return r; | |
622 | } | |
623 | ||
624 | /* Finish the for-init-statement of a for-statement, which may be | |
625 | given by FOR_STMT. */ | |
626 | ||
627 | void | |
3a978d72 | 628 | finish_for_init_stmt (tree for_stmt) |
ad321293 | 629 | { |
35b1567d BC |
630 | if (last_tree != for_stmt) |
631 | RECHAIN_STMTS (for_stmt, FOR_INIT_STMT (for_stmt)); | |
92bc1323 | 632 | do_pushlevel (sk_block); |
ad321293 MM |
633 | } |
634 | ||
635 | /* Finish the COND of a for-statement, which may be given by | |
636 | FOR_STMT. */ | |
637 | ||
638 | void | |
3a978d72 | 639 | finish_for_cond (tree cond, tree for_stmt) |
ad321293 | 640 | { |
ed5511d9 | 641 | cond = maybe_convert_cond (cond); |
5275f2bf JM |
642 | if (processing_template_decl) |
643 | /* Don't mess with condition decls in a template. */ | |
644 | FINISH_COND (cond, for_stmt, FOR_COND (for_stmt)); | |
645 | else if (getdecls () == NULL_TREE) | |
5d764395 JM |
646 | /* It was a simple condition; install it. */ |
647 | FOR_COND (for_stmt) = cond; | |
648 | else | |
649 | { | |
650 | /* If there was a declaration in the condition, we can't leave it | |
651 | there; transform | |
652 | for (; A x = 42;) { } | |
653 | to | |
654 | for (;;) { A x = 42; if (!x) break; } */ | |
655 | tree if_stmt; | |
656 | FOR_COND (for_stmt) = NULL_TREE; | |
657 | ||
658 | if_stmt = begin_if_stmt (); | |
659 | cond = build_unary_op (TRUTH_NOT_EXPR, cond, 0); | |
660 | finish_if_stmt_cond (cond, if_stmt); | |
661 | finish_break_stmt (); | |
662 | finish_then_clause (if_stmt); | |
663 | finish_if_stmt (); | |
664 | } | |
ad321293 MM |
665 | } |
666 | ||
667 | /* Finish the increment-EXPRESSION in a for-statement, which may be | |
668 | given by FOR_STMT. */ | |
669 | ||
670 | void | |
3a978d72 | 671 | finish_for_expr (tree expr, tree for_stmt) |
ad321293 | 672 | { |
35b1567d | 673 | FOR_EXPR (for_stmt) = expr; |
ad321293 MM |
674 | } |
675 | ||
676 | /* Finish the body of a for-statement, which may be given by | |
677 | FOR_STMT. The increment-EXPR for the loop must be | |
678 | provided. */ | |
679 | ||
680 | void | |
3a978d72 | 681 | finish_for_stmt (tree for_stmt) |
ad321293 MM |
682 | { |
683 | /* Pop the scope for the body of the loop. */ | |
684 | do_poplevel (); | |
35b1567d | 685 | RECHAIN_STMTS (for_stmt, FOR_BODY (for_stmt)); |
f2c5f623 | 686 | if (NEW_FOR_SCOPE_P (for_stmt)) |
ad321293 | 687 | do_poplevel (); |
ad321293 MM |
688 | finish_stmt (); |
689 | } | |
690 | ||
691 | /* Finish a break-statement. */ | |
692 | ||
3e4d04a1 | 693 | tree |
3a978d72 | 694 | finish_break_stmt (void) |
ad321293 | 695 | { |
3e4d04a1 | 696 | return add_stmt (build_break_stmt ()); |
35b1567d BC |
697 | } |
698 | ||
ad321293 MM |
699 | /* Finish a continue-statement. */ |
700 | ||
3e4d04a1 | 701 | tree |
3a978d72 | 702 | finish_continue_stmt (void) |
ad321293 | 703 | { |
3e4d04a1 | 704 | return add_stmt (build_continue_stmt ()); |
ad321293 MM |
705 | } |
706 | ||
35b1567d BC |
707 | /* Begin a switch-statement. Returns a new SWITCH_STMT if |
708 | appropriate. */ | |
709 | ||
710 | tree | |
3a978d72 | 711 | begin_switch_stmt (void) |
35b1567d BC |
712 | { |
713 | tree r; | |
92bc1323 | 714 | do_pushlevel (sk_block); |
6f9fdf4d | 715 | r = build_stmt (SWITCH_STMT, NULL_TREE, NULL_TREE, NULL_TREE); |
ae499cce | 716 | add_stmt (r); |
527f0080 | 717 | return r; |
ad321293 MM |
718 | } |
719 | ||
527f0080 | 720 | /* Finish the cond of a switch-statement. */ |
ad321293 | 721 | |
527f0080 | 722 | void |
3a978d72 | 723 | finish_switch_cond (tree cond, tree switch_stmt) |
ad321293 | 724 | { |
6f9fdf4d | 725 | tree orig_type = NULL; |
35b1567d | 726 | if (!processing_template_decl) |
373eb3b3 | 727 | { |
56cb9733 MM |
728 | tree index; |
729 | ||
35b1567d | 730 | /* Convert the condition to an integer or enumeration type. */ |
b746c5dc | 731 | cond = build_expr_type_conversion (WANT_INT | WANT_ENUM, cond, true); |
35b1567d | 732 | if (cond == NULL_TREE) |
373eb3b3 | 733 | { |
35b1567d BC |
734 | error ("switch quantity not an integer"); |
735 | cond = error_mark_node; | |
736 | } | |
6f9fdf4d | 737 | orig_type = TREE_TYPE (cond); |
35b1567d BC |
738 | if (cond != error_mark_node) |
739 | { | |
0a72704b MM |
740 | /* [stmt.switch] |
741 | ||
742 | Integral promotions are performed. */ | |
743 | cond = perform_integral_promotions (cond); | |
2bb5d995 | 744 | cond = fold (build1 (CLEANUP_POINT_EXPR, TREE_TYPE (cond), cond)); |
373eb3b3 | 745 | } |
56cb9733 | 746 | |
25c8b645 JJ |
747 | if (cond != error_mark_node) |
748 | { | |
749 | index = get_unwidened (cond, NULL_TREE); | |
750 | /* We can't strip a conversion from a signed type to an unsigned, | |
751 | because if we did, int_fits_type_p would do the wrong thing | |
752 | when checking case values for being in range, | |
753 | and it's too hard to do the right thing. */ | |
754 | if (TREE_UNSIGNED (TREE_TYPE (cond)) | |
755 | == TREE_UNSIGNED (TREE_TYPE (index))) | |
756 | cond = index; | |
757 | } | |
ad321293 | 758 | } |
35b1567d | 759 | FINISH_COND (cond, switch_stmt, SWITCH_COND (switch_stmt)); |
6f9fdf4d | 760 | SWITCH_TYPE (switch_stmt) = orig_type; |
56cb9733 | 761 | push_switch (switch_stmt); |
ad321293 MM |
762 | } |
763 | ||
764 | /* Finish the body of a switch-statement, which may be given by | |
765 | SWITCH_STMT. The COND to switch on is indicated. */ | |
766 | ||
767 | void | |
3a978d72 | 768 | finish_switch_stmt (tree switch_stmt) |
ad321293 | 769 | { |
35b1567d | 770 | RECHAIN_STMTS (switch_stmt, SWITCH_BODY (switch_stmt)); |
ad321293 | 771 | pop_switch (); |
ad321293 | 772 | finish_stmt (); |
5d764395 | 773 | do_poplevel (); |
ad321293 MM |
774 | } |
775 | ||
c6002625 | 776 | /* Generate the RTL for T, which is a TRY_BLOCK. */ |
6625cdb5 | 777 | |
54f7877c | 778 | static void |
3a978d72 | 779 | genrtl_try_block (tree t) |
35b1567d BC |
780 | { |
781 | if (CLEANUP_P (t)) | |
782 | { | |
783 | expand_eh_region_start (); | |
784 | expand_stmt (TRY_STMTS (t)); | |
52a11cbf | 785 | expand_eh_region_end_cleanup (TRY_HANDLERS (t)); |
46e8c075 | 786 | } |
ad321293 MM |
787 | else |
788 | { | |
f444e36b | 789 | if (!FN_TRY_BLOCK_P (t)) |
0cea056b | 790 | emit_line_note (input_location); |
35b1567d | 791 | |
52a11cbf | 792 | expand_eh_region_start (); |
35b1567d | 793 | expand_stmt (TRY_STMTS (t)); |
ad321293 | 794 | |
35b1567d | 795 | if (FN_TRY_BLOCK_P (t)) |
ad321293 | 796 | { |
35b1567d BC |
797 | expand_start_all_catch (); |
798 | in_function_try_handler = 1; | |
799 | expand_stmt (TRY_HANDLERS (t)); | |
800 | in_function_try_handler = 0; | |
801 | expand_end_all_catch (); | |
802 | } | |
803 | else | |
804 | { | |
805 | expand_start_all_catch (); | |
806 | expand_stmt (TRY_HANDLERS (t)); | |
807 | expand_end_all_catch (); | |
ad321293 | 808 | } |
ad321293 MM |
809 | } |
810 | } | |
811 | ||
c6002625 | 812 | /* Generate the RTL for T, which is an EH_SPEC_BLOCK. */ |
52a11cbf RH |
813 | |
814 | static void | |
3a978d72 | 815 | genrtl_eh_spec_block (tree t) |
52a11cbf RH |
816 | { |
817 | expand_eh_region_start (); | |
818 | expand_stmt (EH_SPEC_STMTS (t)); | |
819 | expand_eh_region_end_allowed (EH_SPEC_RAISES (t), | |
820 | build_call (call_unexpected_node, | |
821 | tree_cons (NULL_TREE, | |
822 | build_exc_ptr (), | |
823 | NULL_TREE))); | |
824 | } | |
825 | ||
ad321293 MM |
826 | /* Begin a try-block. Returns a newly-created TRY_BLOCK if |
827 | appropriate. */ | |
828 | ||
829 | tree | |
3a978d72 | 830 | begin_try_block (void) |
ad321293 | 831 | { |
0dfdeca6 | 832 | tree r = build_stmt (TRY_BLOCK, NULL_TREE, NULL_TREE); |
ae499cce | 833 | add_stmt (r); |
35b1567d | 834 | return r; |
ad321293 MM |
835 | } |
836 | ||
0dde4175 JM |
837 | /* Likewise, for a function-try-block. */ |
838 | ||
839 | tree | |
3a978d72 | 840 | begin_function_try_block (void) |
0dde4175 | 841 | { |
0dfdeca6 | 842 | tree r = build_stmt (TRY_BLOCK, NULL_TREE, NULL_TREE); |
35b1567d | 843 | FN_TRY_BLOCK_P (r) = 1; |
ae499cce | 844 | add_stmt (r); |
35b1567d | 845 | return r; |
0dde4175 JM |
846 | } |
847 | ||
ad321293 MM |
848 | /* Finish a try-block, which may be given by TRY_BLOCK. */ |
849 | ||
850 | void | |
3a978d72 | 851 | finish_try_block (tree try_block) |
ad321293 | 852 | { |
35b1567d | 853 | RECHAIN_STMTS (try_block, TRY_STMTS (try_block)); |
ad321293 MM |
854 | } |
855 | ||
efa8eda3 MM |
856 | /* Finish the body of a cleanup try-block, which may be given by |
857 | TRY_BLOCK. */ | |
858 | ||
62409b39 | 859 | void |
3a978d72 | 860 | finish_cleanup_try_block (tree try_block) |
62409b39 | 861 | { |
35b1567d | 862 | RECHAIN_STMTS (try_block, TRY_STMTS (try_block)); |
62409b39 MM |
863 | } |
864 | ||
f1dedc31 MM |
865 | /* Finish an implicitly generated try-block, with a cleanup is given |
866 | by CLEANUP. */ | |
867 | ||
868 | void | |
3a978d72 | 869 | finish_cleanup (tree cleanup, tree try_block) |
f1dedc31 | 870 | { |
35b1567d BC |
871 | TRY_HANDLERS (try_block) = cleanup; |
872 | CLEANUP_P (try_block) = 1; | |
f1dedc31 MM |
873 | } |
874 | ||
0dde4175 JM |
875 | /* Likewise, for a function-try-block. */ |
876 | ||
877 | void | |
3a978d72 | 878 | finish_function_try_block (tree try_block) |
0dde4175 | 879 | { |
35b1567d BC |
880 | if (TREE_CHAIN (try_block) |
881 | && TREE_CODE (TREE_CHAIN (try_block)) == CTOR_INITIALIZER) | |
62409b39 | 882 | { |
35b1567d BC |
883 | /* Chain the compound statement after the CTOR_INITIALIZER. */ |
884 | TREE_CHAIN (TREE_CHAIN (try_block)) = last_tree; | |
885 | /* And make the CTOR_INITIALIZER the body of the try-block. */ | |
886 | RECHAIN_STMTS (try_block, TRY_STMTS (try_block)); | |
62409b39 | 887 | } |
0dde4175 | 888 | else |
35b1567d | 889 | RECHAIN_STMTS (try_block, TRY_STMTS (try_block)); |
b35d4555 | 890 | in_function_try_handler = 1; |
0dde4175 JM |
891 | } |
892 | ||
ad321293 MM |
893 | /* Finish a handler-sequence for a try-block, which may be given by |
894 | TRY_BLOCK. */ | |
895 | ||
896 | void | |
3a978d72 | 897 | finish_handler_sequence (tree try_block) |
ad321293 | 898 | { |
35b1567d BC |
899 | RECHAIN_STMTS (try_block, TRY_HANDLERS (try_block)); |
900 | check_handlers (TRY_HANDLERS (try_block)); | |
ad321293 MM |
901 | } |
902 | ||
0dde4175 JM |
903 | /* Likewise, for a function-try-block. */ |
904 | ||
905 | void | |
3a978d72 | 906 | finish_function_handler_sequence (tree try_block) |
0dde4175 | 907 | { |
b35d4555 | 908 | in_function_try_handler = 0; |
35b1567d BC |
909 | RECHAIN_STMTS (try_block, TRY_HANDLERS (try_block)); |
910 | check_handlers (TRY_HANDLERS (try_block)); | |
911 | } | |
912 | ||
c6002625 | 913 | /* Generate the RTL for T, which is a HANDLER. */ |
b35d4555 | 914 | |
54f7877c | 915 | static void |
3a978d72 | 916 | genrtl_handler (tree t) |
35b1567d BC |
917 | { |
918 | genrtl_do_pushlevel (); | |
1a6025b4 JM |
919 | if (!processing_template_decl) |
920 | expand_start_catch (HANDLER_TYPE (t)); | |
35b1567d BC |
921 | expand_stmt (HANDLER_BODY (t)); |
922 | if (!processing_template_decl) | |
52a11cbf | 923 | expand_end_catch (); |
0dde4175 JM |
924 | } |
925 | ||
ad321293 MM |
926 | /* Begin a handler. Returns a HANDLER if appropriate. */ |
927 | ||
928 | tree | |
3a978d72 | 929 | begin_handler (void) |
ad321293 MM |
930 | { |
931 | tree r; | |
0dfdeca6 | 932 | r = build_stmt (HANDLER, NULL_TREE, NULL_TREE); |
ae499cce | 933 | add_stmt (r); |
1a6025b4 JM |
934 | /* Create a binding level for the eh_info and the exception object |
935 | cleanup. */ | |
92bc1323 | 936 | do_pushlevel (sk_catch); |
ad321293 MM |
937 | return r; |
938 | } | |
939 | ||
940 | /* Finish the handler-parameters for a handler, which may be given by | |
b35d4555 MM |
941 | HANDLER. DECL is the declaration for the catch parameter, or NULL |
942 | if this is a `catch (...)' clause. */ | |
ad321293 | 943 | |
1a6025b4 | 944 | void |
3a978d72 | 945 | finish_handler_parms (tree decl, tree handler) |
b35d4555 | 946 | { |
1a6025b4 | 947 | tree type = NULL_TREE; |
b35d4555 MM |
948 | if (processing_template_decl) |
949 | { | |
950 | if (decl) | |
951 | { | |
952 | decl = pushdecl (decl); | |
953 | decl = push_template_decl (decl); | |
954 | add_decl_stmt (decl); | |
955 | RECHAIN_STMTS (handler, HANDLER_PARMS (handler)); | |
1a6025b4 | 956 | type = TREE_TYPE (decl); |
b35d4555 MM |
957 | } |
958 | } | |
35b1567d | 959 | else |
1a6025b4 | 960 | type = expand_start_catch_block (decl); |
35b1567d | 961 | |
1a6025b4 | 962 | HANDLER_TYPE (handler) = type; |
6cad4e17 JH |
963 | if (type) |
964 | mark_used (eh_type_info (type)); | |
35b1567d BC |
965 | } |
966 | ||
967 | /* Finish a handler, which may be given by HANDLER. The BLOCKs are | |
968 | the return value from the matching call to finish_handler_parms. */ | |
969 | ||
970 | void | |
3a978d72 | 971 | finish_handler (tree handler) |
35b1567d BC |
972 | { |
973 | if (!processing_template_decl) | |
1a6025b4 | 974 | expand_end_catch_block (); |
35b1567d BC |
975 | do_poplevel (); |
976 | RECHAIN_STMTS (handler, HANDLER_BODY (handler)); | |
977 | } | |
978 | ||
7a3397c7 | 979 | /* Begin a compound-statement. If HAS_NO_SCOPE is true, the |
ad321293 | 980 | compound-statement does not define a scope. Returns a new |
7a3397c7 | 981 | COMPOUND_STMT. */ |
ad321293 MM |
982 | |
983 | tree | |
7a3397c7 | 984 | begin_compound_stmt (bool has_no_scope) |
ad321293 MM |
985 | { |
986 | tree r; | |
6625cdb5 | 987 | int is_try = 0; |
ad321293 | 988 | |
0dfdeca6 | 989 | r = build_stmt (COMPOUND_STMT, NULL_TREE); |
35b1567d BC |
990 | |
991 | if (last_tree && TREE_CODE (last_tree) == TRY_BLOCK) | |
992 | is_try = 1; | |
993 | ||
ae499cce | 994 | add_stmt (r); |
35b1567d BC |
995 | if (has_no_scope) |
996 | COMPOUND_STMT_NO_SCOPE (r) = 1; | |
ad321293 | 997 | |
558475f0 MM |
998 | last_expr_type = NULL_TREE; |
999 | ||
ad321293 | 1000 | if (!has_no_scope) |
92bc1323 | 1001 | do_pushlevel (is_try ? sk_try : sk_block); |
f1dedc31 MM |
1002 | else |
1003 | /* Normally, we try hard to keep the BLOCK for a | |
1004 | statement-expression. But, if it's a statement-expression with | |
1005 | a scopeless block, there's nothing to keep, and we don't want | |
1006 | to accidentally keep a block *inside* the scopeless block. */ | |
ac20c67a | 1007 | keep_next_level (false); |
ad321293 MM |
1008 | |
1009 | return r; | |
1010 | } | |
1011 | ||
7a3397c7 | 1012 | /* Finish a compound-statement, which is given by COMPOUND_STMT. */ |
ad321293 MM |
1013 | |
1014 | tree | |
7a3397c7 | 1015 | finish_compound_stmt (tree compound_stmt) |
ad321293 MM |
1016 | { |
1017 | tree r; | |
558475f0 | 1018 | tree t; |
ad321293 | 1019 | |
7a3397c7 | 1020 | if (COMPOUND_STMT_NO_SCOPE (compound_stmt)) |
ad321293 | 1021 | r = NULL_TREE; |
7a3397c7 NS |
1022 | else |
1023 | r = do_poplevel (); | |
ad321293 | 1024 | |
35b1567d | 1025 | RECHAIN_STMTS (compound_stmt, COMPOUND_BODY (compound_stmt)); |
ad321293 | 1026 | |
cb39191d | 1027 | /* When we call finish_stmt we will lose LAST_EXPR_TYPE. But, since |
558475f0 MM |
1028 | the precise purpose of that variable is store the type of the |
1029 | last expression statement within the last compound statement, we | |
1030 | preserve the value. */ | |
1031 | t = last_expr_type; | |
ad321293 | 1032 | finish_stmt (); |
558475f0 | 1033 | last_expr_type = t; |
ad321293 MM |
1034 | |
1035 | return r; | |
1036 | } | |
1037 | ||
35b1567d BC |
1038 | /* Finish an asm-statement, whose components are a CV_QUALIFIER, a |
1039 | STRING, some OUTPUT_OPERANDS, some INPUT_OPERANDS, and some | |
1040 | CLOBBERS. */ | |
7dc5bd62 | 1041 | |
3e4d04a1 | 1042 | tree |
3a978d72 NN |
1043 | finish_asm_stmt (tree cv_qualifier, |
1044 | tree string, | |
1045 | tree output_operands, | |
1046 | tree input_operands, | |
1047 | tree clobbers) | |
35b1567d BC |
1048 | { |
1049 | tree r; | |
abfc8a36 MM |
1050 | tree t; |
1051 | ||
35b1567d BC |
1052 | if (cv_qualifier != NULL_TREE |
1053 | && cv_qualifier != ridpointers[(int) RID_VOLATILE]) | |
1054 | { | |
33bd39a2 | 1055 | warning ("%s qualifier ignored on asm", |
35b1567d BC |
1056 | IDENTIFIER_POINTER (cv_qualifier)); |
1057 | cv_qualifier = NULL_TREE; | |
ad321293 | 1058 | } |
35b1567d | 1059 | |
abfc8a36 | 1060 | if (!processing_template_decl) |
40b18c0a MM |
1061 | { |
1062 | int i; | |
1063 | int ninputs; | |
1064 | int noutputs; | |
1065 | ||
1066 | for (t = input_operands; t; t = TREE_CHAIN (t)) | |
1067 | { | |
1068 | tree converted_operand | |
1069 | = decay_conversion (TREE_VALUE (t)); | |
1070 | ||
1071 | /* If the type of the operand hasn't been determined (e.g., | |
1072 | because it involves an overloaded function), then issue | |
1073 | an error message. There's no context available to | |
1074 | resolve the overloading. */ | |
1075 | if (TREE_TYPE (converted_operand) == unknown_type_node) | |
1076 | { | |
33bd39a2 | 1077 | error ("type of asm operand `%E' could not be determined", |
40b18c0a MM |
1078 | TREE_VALUE (t)); |
1079 | converted_operand = error_mark_node; | |
1080 | } | |
1081 | TREE_VALUE (t) = converted_operand; | |
1082 | } | |
1083 | ||
1084 | ninputs = list_length (input_operands); | |
1085 | noutputs = list_length (output_operands); | |
1086 | ||
1087 | for (i = 0, t = output_operands; t; t = TREE_CHAIN (t), ++i) | |
1088 | { | |
1089 | bool allows_mem; | |
1090 | bool allows_reg; | |
1091 | bool is_inout; | |
1092 | const char *constraint; | |
1093 | tree operand; | |
1094 | ||
84b72302 | 1095 | constraint = TREE_STRING_POINTER (TREE_VALUE (TREE_PURPOSE (t))); |
28c56d25 | 1096 | operand = TREE_VALUE (t); |
40b18c0a MM |
1097 | |
1098 | if (!parse_output_constraint (&constraint, | |
1099 | i, ninputs, noutputs, | |
1100 | &allows_mem, | |
1101 | &allows_reg, | |
1102 | &is_inout)) | |
1103 | { | |
a723baf1 MM |
1104 | /* By marking this operand as erroneous, we will not try |
1105 | to process this operand again in expand_asm_operands. */ | |
1106 | TREE_VALUE (t) = error_mark_node; | |
40b18c0a MM |
1107 | continue; |
1108 | } | |
1109 | ||
1110 | /* If the operand is a DECL that is going to end up in | |
1111 | memory, assume it is addressable. This is a bit more | |
1112 | conservative than it would ideally be; the exact test is | |
1113 | buried deep in expand_asm_operands and depends on the | |
1114 | DECL_RTL for the OPERAND -- which we don't have at this | |
1115 | point. */ | |
1116 | if (!allows_reg && DECL_P (operand)) | |
dffd7eb6 | 1117 | cxx_mark_addressable (operand); |
40b18c0a MM |
1118 | } |
1119 | } | |
abfc8a36 | 1120 | |
0dfdeca6 BC |
1121 | r = build_stmt (ASM_STMT, cv_qualifier, string, |
1122 | output_operands, input_operands, | |
1123 | clobbers); | |
3e4d04a1 | 1124 | return add_stmt (r); |
ad321293 | 1125 | } |
b4c4a9ec | 1126 | |
f01b0acb MM |
1127 | /* Finish a label with the indicated NAME. */ |
1128 | ||
a723baf1 | 1129 | tree |
3a978d72 | 1130 | finish_label_stmt (tree name) |
f01b0acb | 1131 | { |
5b030314 | 1132 | tree decl = define_label (input_location, name); |
a723baf1 | 1133 | return add_stmt (build_stmt (LABEL_STMT, decl)); |
f01b0acb MM |
1134 | } |
1135 | ||
acef433b MM |
1136 | /* Finish a series of declarations for local labels. G++ allows users |
1137 | to declare "local" labels, i.e., labels with scope. This extension | |
1138 | is useful when writing code involving statement-expressions. */ | |
1139 | ||
1140 | void | |
3a978d72 | 1141 | finish_label_decl (tree name) |
acef433b MM |
1142 | { |
1143 | tree decl = declare_local_label (name); | |
35b1567d | 1144 | add_decl_stmt (decl); |
acef433b MM |
1145 | } |
1146 | ||
659e5a7a | 1147 | /* When DECL goes out of scope, make sure that CLEANUP is executed. */ |
f1dedc31 MM |
1148 | |
1149 | void | |
3a978d72 | 1150 | finish_decl_cleanup (tree decl, tree cleanup) |
f1dedc31 | 1151 | { |
659e5a7a | 1152 | add_stmt (build_stmt (CLEANUP_STMT, decl, cleanup)); |
35b1567d BC |
1153 | } |
1154 | ||
659e5a7a | 1155 | /* If the current scope exits with an exception, run CLEANUP. */ |
24bef158 | 1156 | |
659e5a7a | 1157 | void |
3a978d72 | 1158 | finish_eh_cleanup (tree cleanup) |
24bef158 | 1159 | { |
659e5a7a JM |
1160 | tree r = build_stmt (CLEANUP_STMT, NULL_TREE, cleanup); |
1161 | CLEANUP_EH_ONLY (r) = 1; | |
1162 | add_stmt (r); | |
35b1567d BC |
1163 | } |
1164 | ||
2282d28d MM |
1165 | /* The MEM_INITS is a list of mem-initializers, in reverse of the |
1166 | order they were written by the user. Each node is as for | |
1167 | emit_mem_initializers. */ | |
bf3428d0 MM |
1168 | |
1169 | void | |
2282d28d | 1170 | finish_mem_initializers (tree mem_inits) |
bf3428d0 | 1171 | { |
2282d28d MM |
1172 | /* Reorder the MEM_INITS so that they are in the order they appeared |
1173 | in the source program. */ | |
1174 | mem_inits = nreverse (mem_inits); | |
bf3428d0 | 1175 | |
a0de9d20 | 1176 | if (processing_template_decl) |
2282d28d | 1177 | add_stmt (build_min_nt (CTOR_INITIALIZER, mem_inits)); |
cdd2559c | 1178 | else |
2282d28d | 1179 | emit_mem_initializers (mem_inits); |
558475f0 MM |
1180 | } |
1181 | ||
8f17b5c5 | 1182 | /* Returns the stack of SCOPE_STMTs for the current function. */ |
35b1567d | 1183 | |
8f17b5c5 | 1184 | tree * |
3a978d72 | 1185 | current_scope_stmt_stack (void) |
8f471b0d | 1186 | { |
e2500fed | 1187 | return &cfun->language->base.x_scope_stmt_stack; |
8f471b0d MM |
1188 | } |
1189 | ||
b4c4a9ec MM |
1190 | /* Finish a parenthesized expression EXPR. */ |
1191 | ||
1192 | tree | |
3a978d72 | 1193 | finish_parenthesized_expr (tree expr) |
b4c4a9ec MM |
1194 | { |
1195 | if (IS_EXPR_CODE_CLASS (TREE_CODE_CLASS (TREE_CODE (expr)))) | |
78ef5b89 | 1196 | /* This inhibits warnings in c_common_truthvalue_conversion. */ |
b4c4a9ec MM |
1197 | C_SET_EXP_ORIGINAL_CODE (expr, ERROR_MARK); |
1198 | ||
19420d00 NS |
1199 | if (TREE_CODE (expr) == OFFSET_REF) |
1200 | /* [expr.unary.op]/3 The qualified id of a pointer-to-member must not be | |
1201 | enclosed in parentheses. */ | |
1202 | PTRMEM_OK_P (expr) = 0; | |
b4c4a9ec MM |
1203 | return expr; |
1204 | } | |
1205 | ||
a723baf1 MM |
1206 | /* Finish a reference to a non-static data member (DECL) that is not |
1207 | preceded by `.' or `->'. */ | |
1208 | ||
1209 | tree | |
a3f10e50 | 1210 | finish_non_static_data_member (tree decl, tree object, tree qualifying_scope) |
a723baf1 MM |
1211 | { |
1212 | my_friendly_assert (TREE_CODE (decl) == FIELD_DECL, 20020909); | |
1213 | ||
a3f10e50 | 1214 | if (!object) |
a723baf1 MM |
1215 | { |
1216 | if (current_function_decl | |
1217 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
1218 | cp_error_at ("invalid use of member `%D' in static member function", | |
1219 | decl); | |
1220 | else | |
1221 | cp_error_at ("invalid use of non-static data member `%D'", decl); | |
1222 | error ("from this location"); | |
1223 | ||
1224 | return error_mark_node; | |
1225 | } | |
1226 | TREE_USED (current_class_ptr) = 1; | |
1227 | if (processing_template_decl) | |
a723baf1 | 1228 | { |
a3f10e50 | 1229 | tree type = TREE_TYPE (decl); |
a723baf1 | 1230 | |
a3f10e50 NS |
1231 | if (TREE_CODE (type) == REFERENCE_TYPE) |
1232 | type = TREE_TYPE (type); | |
1233 | else | |
1234 | { | |
1235 | /* Set the cv qualifiers */ | |
1236 | int quals = cp_type_quals (TREE_TYPE (current_class_ref)); | |
1237 | ||
1238 | if (DECL_MUTABLE_P (decl)) | |
1239 | quals &= ~TYPE_QUAL_CONST; | |
9e95d15f | 1240 | |
a3f10e50 NS |
1241 | quals |= cp_type_quals (TREE_TYPE (decl)); |
1242 | type = cp_build_qualified_type (type, quals); | |
1243 | } | |
9e95d15f | 1244 | |
a3f10e50 NS |
1245 | return build_min (COMPONENT_REF, type, object, decl); |
1246 | } | |
1247 | else | |
1248 | { | |
1249 | tree access_type = TREE_TYPE (object); | |
1250 | tree lookup_context = context_for_name_lookup (decl); | |
1251 | ||
1252 | while (!DERIVED_FROM_P (lookup_context, access_type)) | |
a723baf1 MM |
1253 | { |
1254 | access_type = TYPE_CONTEXT (access_type); | |
9f01ded6 | 1255 | while (access_type && DECL_P (access_type)) |
a723baf1 | 1256 | access_type = DECL_CONTEXT (access_type); |
a723baf1 | 1257 | |
a3f10e50 NS |
1258 | if (!access_type) |
1259 | { | |
1260 | cp_error_at ("object missing in reference to `%D'", decl); | |
1261 | error ("from this location"); | |
1262 | return error_mark_node; | |
1263 | } | |
9f01ded6 KL |
1264 | } |
1265 | ||
6df5158a | 1266 | perform_or_defer_access_check (TYPE_BINFO (access_type), decl); |
a723baf1 MM |
1267 | |
1268 | /* If the data member was named `C::M', convert `*this' to `C' | |
1269 | first. */ | |
1270 | if (qualifying_scope) | |
1271 | { | |
1272 | tree binfo = NULL_TREE; | |
1273 | object = build_scoped_ref (object, qualifying_scope, | |
1274 | &binfo); | |
1275 | } | |
1276 | ||
1277 | return build_class_member_access_expr (object, decl, | |
1278 | /*access_path=*/NULL_TREE, | |
1279 | /*preserve_reference=*/false); | |
1280 | } | |
1281 | } | |
1282 | ||
ee76b931 MM |
1283 | /* DECL was the declaration to which a qualified-id resolved. Issue |
1284 | an error message if it is not accessible. If OBJECT_TYPE is | |
1285 | non-NULL, we have just seen `x->' or `x.' and OBJECT_TYPE is the | |
1286 | type of `*x', or `x', respectively. If the DECL was named as | |
1287 | `A::B' then NESTED_NAME_SPECIFIER is `A'. */ | |
1288 | ||
1289 | void | |
1290 | check_accessibility_of_qualified_id (tree decl, | |
1291 | tree object_type, | |
1292 | tree nested_name_specifier) | |
1293 | { | |
1294 | tree scope; | |
1295 | tree qualifying_type = NULL_TREE; | |
1296 | ||
1297 | /* Determine the SCOPE of DECL. */ | |
1298 | scope = context_for_name_lookup (decl); | |
1299 | /* If the SCOPE is not a type, then DECL is not a member. */ | |
1300 | if (!TYPE_P (scope)) | |
1301 | return; | |
1302 | /* Compute the scope through which DECL is being accessed. */ | |
1303 | if (object_type | |
1304 | /* OBJECT_TYPE might not be a class type; consider: | |
1305 | ||
1306 | class A { typedef int I; }; | |
1307 | I *p; | |
1308 | p->A::I::~I(); | |
1309 | ||
1310 | In this case, we will have "A::I" as the DECL, but "I" as the | |
1311 | OBJECT_TYPE. */ | |
1312 | && CLASS_TYPE_P (object_type) | |
1313 | && DERIVED_FROM_P (scope, object_type)) | |
1314 | /* If we are processing a `->' or `.' expression, use the type of the | |
1315 | left-hand side. */ | |
1316 | qualifying_type = object_type; | |
1317 | else if (nested_name_specifier) | |
1318 | { | |
1319 | /* If the reference is to a non-static member of the | |
1320 | current class, treat it as if it were referenced through | |
1321 | `this'. */ | |
1322 | if (DECL_NONSTATIC_MEMBER_P (decl) | |
1323 | && current_class_ptr | |
1324 | && DERIVED_FROM_P (scope, current_class_type)) | |
1325 | qualifying_type = current_class_type; | |
1326 | /* Otherwise, use the type indicated by the | |
1327 | nested-name-specifier. */ | |
1328 | else | |
1329 | qualifying_type = nested_name_specifier; | |
1330 | } | |
1331 | else | |
1332 | /* Otherwise, the name must be from the current class or one of | |
1333 | its bases. */ | |
1334 | qualifying_type = currently_open_derived_class (scope); | |
1335 | ||
1336 | if (qualifying_type) | |
1337 | perform_or_defer_access_check (TYPE_BINFO (qualifying_type), decl); | |
1338 | } | |
1339 | ||
1340 | /* EXPR is the result of a qualified-id. The QUALIFYING_CLASS was the | |
1341 | class named to the left of the "::" operator. DONE is true if this | |
1342 | expression is a complete postfix-expression; it is false if this | |
1343 | expression is followed by '->', '[', '(', etc. ADDRESS_P is true | |
1344 | iff this expression is the operand of '&'. */ | |
1345 | ||
1346 | tree | |
1347 | finish_qualified_id_expr (tree qualifying_class, tree expr, bool done, | |
1348 | bool address_p) | |
1349 | { | |
5e08432e MM |
1350 | if (error_operand_p (expr)) |
1351 | return error_mark_node; | |
1352 | ||
ee76b931 MM |
1353 | /* If EXPR occurs as the operand of '&', use special handling that |
1354 | permits a pointer-to-member. */ | |
1355 | if (address_p && done) | |
1356 | { | |
1357 | if (TREE_CODE (expr) == SCOPE_REF) | |
1358 | expr = TREE_OPERAND (expr, 1); | |
a5ac359a MM |
1359 | expr = build_offset_ref (qualifying_class, expr, |
1360 | /*address_p=*/true); | |
ee76b931 MM |
1361 | return expr; |
1362 | } | |
1363 | ||
1364 | if (TREE_CODE (expr) == FIELD_DECL) | |
a3f10e50 NS |
1365 | expr = finish_non_static_data_member (expr, current_class_ref, |
1366 | qualifying_class); | |
ee76b931 MM |
1367 | else if (BASELINK_P (expr) && !processing_template_decl) |
1368 | { | |
1369 | tree fn; | |
1370 | tree fns; | |
1371 | ||
1372 | /* See if any of the functions are non-static members. */ | |
1373 | fns = BASELINK_FUNCTIONS (expr); | |
1374 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
1375 | fns = TREE_OPERAND (fns, 0); | |
1376 | for (fn = fns; fn; fn = OVL_NEXT (fn)) | |
1377 | if (DECL_NONSTATIC_MEMBER_FUNCTION_P (fn)) | |
1378 | break; | |
1379 | /* If so, the expression may be relative to the current | |
1380 | class. */ | |
1381 | if (fn && current_class_type | |
1382 | && DERIVED_FROM_P (qualifying_class, current_class_type)) | |
1383 | expr = (build_class_member_access_expr | |
1384 | (maybe_dummy_object (qualifying_class, NULL), | |
1385 | expr, | |
1386 | BASELINK_ACCESS_BINFO (expr), | |
1387 | /*preserve_reference=*/false)); | |
1388 | else if (done) | |
a5ac359a MM |
1389 | /* The expression is a qualified name whose address is not |
1390 | being taken. */ | |
1391 | expr = build_offset_ref (qualifying_class, expr, /*address_p=*/false); | |
ee76b931 MM |
1392 | } |
1393 | ||
1394 | return expr; | |
1395 | } | |
1396 | ||
b69b1501 MM |
1397 | /* Begin a statement-expression. The value returned must be passed to |
1398 | finish_stmt_expr. */ | |
b4c4a9ec MM |
1399 | |
1400 | tree | |
3a978d72 | 1401 | begin_stmt_expr (void) |
b4c4a9ec | 1402 | { |
6f80451c MM |
1403 | /* If we're outside a function, we won't have a statement-tree to |
1404 | work with. But, if we see a statement-expression we need to | |
1405 | create one. */ | |
01d939e8 | 1406 | if (! cfun && !last_tree) |
6f80451c MM |
1407 | begin_stmt_tree (&scope_chain->x_saved_tree); |
1408 | ||
a5bcc582 NS |
1409 | last_expr_type = NULL_TREE; |
1410 | ||
ac20c67a | 1411 | keep_next_level (true); |
303b7406 | 1412 | |
35b1567d BC |
1413 | return last_tree; |
1414 | } | |
1415 | ||
a5bcc582 NS |
1416 | /* Process the final expression of a statement expression. EXPR can be |
1417 | NULL, if the final expression is empty. Build up a TARGET_EXPR so | |
1418 | that the result value can be safely returned to the enclosing | |
1419 | expression. */ | |
1420 | ||
1421 | tree | |
1422 | finish_stmt_expr_expr (tree expr) | |
1423 | { | |
1424 | tree result = NULL_TREE; | |
1425 | tree type = void_type_node; | |
1426 | ||
1427 | if (expr) | |
1428 | { | |
1429 | type = TREE_TYPE (expr); | |
1430 | ||
1431 | if (!processing_template_decl && !VOID_TYPE_P (TREE_TYPE (expr))) | |
1432 | { | |
1433 | if (TREE_CODE (type) == ARRAY_TYPE | |
1434 | || TREE_CODE (type) == FUNCTION_TYPE) | |
1435 | expr = decay_conversion (expr); | |
1436 | ||
1437 | expr = convert_from_reference (expr); | |
1438 | expr = require_complete_type (expr); | |
1439 | ||
1440 | /* Build a TARGET_EXPR for this aggregate. finish_stmt_expr | |
1441 | will then pull it apart so the lifetime of the target is | |
cd0be382 | 1442 | within the scope of the expression containing this statement |
a5bcc582 NS |
1443 | expression. */ |
1444 | if (TREE_CODE (expr) == TARGET_EXPR) | |
1445 | ; | |
1446 | else if (!IS_AGGR_TYPE (type) || TYPE_HAS_TRIVIAL_INIT_REF (type)) | |
1447 | expr = build_target_expr_with_type (expr, type); | |
1448 | else | |
1449 | { | |
1450 | /* Copy construct. */ | |
1451 | expr = build_special_member_call | |
1452 | (NULL_TREE, complete_ctor_identifier, | |
1453 | build_tree_list (NULL_TREE, expr), | |
1454 | TYPE_BINFO (type), LOOKUP_NORMAL); | |
1455 | expr = build_cplus_new (type, expr); | |
1456 | my_friendly_assert (TREE_CODE (expr) == TARGET_EXPR, 20030729); | |
1457 | } | |
1458 | } | |
1459 | ||
1460 | if (expr != error_mark_node) | |
1461 | { | |
1462 | result = build_stmt (EXPR_STMT, expr); | |
1463 | add_stmt (result); | |
1464 | } | |
1465 | } | |
1466 | ||
1467 | finish_stmt (); | |
1468 | ||
1469 | /* Remember the last expression so that finish_stmt_expr can pull it | |
1470 | apart. */ | |
1471 | last_expr_type = result ? result : void_type_node; | |
1472 | ||
1473 | return result; | |
1474 | } | |
1475 | ||
303b7406 NS |
1476 | /* Finish a statement-expression. EXPR should be the value returned |
1477 | by the previous begin_stmt_expr. Returns an expression | |
1478 | representing the statement-expression. */ | |
b4c4a9ec MM |
1479 | |
1480 | tree | |
303b7406 | 1481 | finish_stmt_expr (tree rtl_expr, bool has_no_scope) |
b4c4a9ec MM |
1482 | { |
1483 | tree result; | |
a5bcc582 NS |
1484 | tree result_stmt = last_expr_type; |
1485 | tree type; | |
1486 | ||
1487 | if (!last_expr_type) | |
1488 | type = void_type_node; | |
1489 | else | |
1490 | { | |
1491 | if (result_stmt == void_type_node) | |
1492 | { | |
1493 | type = void_type_node; | |
1494 | result_stmt = NULL_TREE; | |
1495 | } | |
1496 | else | |
1497 | type = TREE_TYPE (EXPR_STMT_EXPR (result_stmt)); | |
1498 | } | |
1499 | ||
1500 | result = build_min (STMT_EXPR, type, last_tree); | |
35b1567d | 1501 | TREE_SIDE_EFFECTS (result) = 1; |
303b7406 | 1502 | STMT_EXPR_NO_SCOPE (result) = has_no_scope; |
35b1567d | 1503 | |
a5bcc582 NS |
1504 | last_expr_type = NULL_TREE; |
1505 | ||
35b1567d BC |
1506 | /* Remove the compound statement from the tree structure; it is |
1507 | now saved in the STMT_EXPR. */ | |
ae499cce | 1508 | last_tree = rtl_expr; |
35b1567d | 1509 | TREE_CHAIN (last_tree) = NULL_TREE; |
f1dedc31 | 1510 | |
6f80451c MM |
1511 | /* If we created a statement-tree for this statement-expression, |
1512 | remove it now. */ | |
01d939e8 | 1513 | if (! cfun |
6f80451c MM |
1514 | && TREE_CHAIN (scope_chain->x_saved_tree) == NULL_TREE) |
1515 | finish_stmt_tree (&scope_chain->x_saved_tree); | |
1516 | ||
a5bcc582 NS |
1517 | if (processing_template_decl) |
1518 | return result; | |
1519 | ||
1520 | if (!VOID_TYPE_P (type)) | |
1521 | { | |
1522 | /* Pull out the TARGET_EXPR that is the final expression. Put | |
1523 | the target's init_expr as the final expression and then put | |
1524 | the statement expression itself as the target's init | |
1525 | expr. Finally, return the target expression. */ | |
1526 | tree last_expr = EXPR_STMT_EXPR (result_stmt); | |
1527 | ||
1528 | my_friendly_assert (TREE_CODE (last_expr) == TARGET_EXPR, 20030729); | |
1529 | EXPR_STMT_EXPR (result_stmt) = TREE_OPERAND (last_expr, 1); | |
1530 | TREE_OPERAND (last_expr, 1) = result; | |
1531 | result = last_expr; | |
1532 | } | |
b4c4a9ec MM |
1533 | return result; |
1534 | } | |
1535 | ||
b3445994 | 1536 | /* Perform Koenig lookup. FN is the postfix-expression representing |
fa531100 MM |
1537 | the function (or functions) to call; ARGS are the arguments to the |
1538 | call. Returns the functions to be considered by overload | |
1539 | resolution. */ | |
b3445994 MM |
1540 | |
1541 | tree | |
1542 | perform_koenig_lookup (tree fn, tree args) | |
1543 | { | |
1544 | tree identifier = NULL_TREE; | |
1545 | tree functions = NULL_TREE; | |
1546 | ||
1547 | /* Find the name of the overloaded function. */ | |
1548 | if (TREE_CODE (fn) == IDENTIFIER_NODE) | |
1549 | identifier = fn; | |
1550 | else if (is_overloaded_fn (fn)) | |
1551 | { | |
1552 | functions = fn; | |
1553 | identifier = DECL_NAME (get_first_fn (functions)); | |
1554 | } | |
1555 | else if (DECL_P (fn)) | |
1556 | { | |
1557 | functions = fn; | |
1558 | identifier = DECL_NAME (fn); | |
1559 | } | |
1560 | ||
1561 | /* A call to a namespace-scope function using an unqualified name. | |
1562 | ||
1563 | Do Koenig lookup -- unless any of the arguments are | |
1564 | type-dependent. */ | |
1565 | if (!any_type_dependent_arguments_p (args)) | |
1566 | { | |
1567 | fn = lookup_arg_dependent (identifier, functions, args); | |
1568 | if (!fn) | |
1569 | /* The unqualified name could not be resolved. */ | |
1570 | fn = unqualified_fn_lookup_error (identifier); | |
1571 | } | |
1572 | else | |
10b1d5e7 | 1573 | fn = identifier; |
b3445994 MM |
1574 | |
1575 | return fn; | |
1576 | } | |
1577 | ||
4ba126e4 MM |
1578 | /* Generate an expression for `FN (ARGS)'. |
1579 | ||
1580 | If DISALLOW_VIRTUAL is true, the call to FN will be not generated | |
1581 | as a virtual call, even if FN is virtual. (This flag is set when | |
1582 | encountering an expression where the function name is explicitly | |
1583 | qualified. For example a call to `X::f' never generates a virtual | |
1584 | call.) | |
1585 | ||
1586 | Returns code for the call. */ | |
b4c4a9ec MM |
1587 | |
1588 | tree | |
6d80c4b9 | 1589 | finish_call_expr (tree fn, tree args, bool disallow_virtual, bool koenig_p) |
b4c4a9ec | 1590 | { |
d17811fd MM |
1591 | tree result; |
1592 | tree orig_fn; | |
1593 | tree orig_args; | |
1594 | ||
4ba126e4 MM |
1595 | if (fn == error_mark_node || args == error_mark_node) |
1596 | return error_mark_node; | |
1597 | ||
4ba126e4 MM |
1598 | /* ARGS should be a list of arguments. */ |
1599 | my_friendly_assert (!args || TREE_CODE (args) == TREE_LIST, | |
1600 | 20020712); | |
a759e627 | 1601 | |
d17811fd MM |
1602 | orig_fn = fn; |
1603 | orig_args = args; | |
1604 | ||
1605 | if (processing_template_decl) | |
1606 | { | |
1607 | if (type_dependent_expression_p (fn) | |
1608 | || any_type_dependent_arguments_p (args)) | |
6d80c4b9 MM |
1609 | { |
1610 | result = build_nt (CALL_EXPR, fn, args); | |
1611 | KOENIG_LOOKUP_P (result) = koenig_p; | |
1612 | return result; | |
1613 | } | |
d17811fd MM |
1614 | if (!BASELINK_P (fn) |
1615 | && TREE_CODE (fn) != PSEUDO_DTOR_EXPR | |
1616 | && TREE_TYPE (fn) != unknown_type_node) | |
1617 | fn = build_non_dependent_expr (fn); | |
1618 | args = build_non_dependent_args (orig_args); | |
1619 | } | |
1620 | ||
a723baf1 MM |
1621 | /* A reference to a member function will appear as an overloaded |
1622 | function (rather than a BASELINK) if an unqualified name was used | |
1623 | to refer to it. */ | |
1624 | if (!BASELINK_P (fn) && is_overloaded_fn (fn)) | |
1625 | { | |
12483c9f | 1626 | tree f = fn; |
a723baf1 | 1627 | |
12483c9f NS |
1628 | if (TREE_CODE (f) == TEMPLATE_ID_EXPR) |
1629 | f = TREE_OPERAND (f, 0); | |
1630 | f = get_first_fn (f); | |
a723baf1 MM |
1631 | if (DECL_FUNCTION_MEMBER_P (f)) |
1632 | { | |
1633 | tree type = currently_open_derived_class (DECL_CONTEXT (f)); | |
1634 | fn = build_baselink (TYPE_BINFO (type), | |
1635 | TYPE_BINFO (type), | |
1636 | fn, /*optype=*/NULL_TREE); | |
1637 | } | |
1638 | } | |
1639 | ||
d17811fd | 1640 | result = NULL_TREE; |
4ba126e4 | 1641 | if (BASELINK_P (fn)) |
03d82991 | 1642 | { |
4ba126e4 MM |
1643 | tree object; |
1644 | ||
1645 | /* A call to a member function. From [over.call.func]: | |
1646 | ||
1647 | If the keyword this is in scope and refers to the class of | |
1648 | that member function, or a derived class thereof, then the | |
1649 | function call is transformed into a qualified function call | |
1650 | using (*this) as the postfix-expression to the left of the | |
1651 | . operator.... [Otherwise] a contrived object of type T | |
1652 | becomes the implied object argument. | |
1653 | ||
1654 | This paragraph is unclear about this situation: | |
1655 | ||
1656 | struct A { void f(); }; | |
1657 | struct B : public A {}; | |
1658 | struct C : public A { void g() { B::f(); }}; | |
1659 | ||
1660 | In particular, for `B::f', this paragraph does not make clear | |
1661 | whether "the class of that member function" refers to `A' or | |
1662 | to `B'. We believe it refers to `B'. */ | |
1663 | if (current_class_type | |
1664 | && DERIVED_FROM_P (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), | |
1665 | current_class_type) | |
1666 | && current_class_ref) | |
127b8136 MM |
1667 | object = maybe_dummy_object (BINFO_TYPE (BASELINK_ACCESS_BINFO (fn)), |
1668 | NULL); | |
4ba126e4 MM |
1669 | else |
1670 | { | |
1671 | tree representative_fn; | |
b4c4a9ec | 1672 | |
4ba126e4 MM |
1673 | representative_fn = BASELINK_FUNCTIONS (fn); |
1674 | if (TREE_CODE (representative_fn) == TEMPLATE_ID_EXPR) | |
1675 | representative_fn = TREE_OPERAND (representative_fn, 0); | |
1676 | representative_fn = get_first_fn (representative_fn); | |
1677 | object = build_dummy_object (DECL_CONTEXT (representative_fn)); | |
1678 | } | |
b4c4a9ec | 1679 | |
d17811fd MM |
1680 | if (processing_template_decl) |
1681 | { | |
1682 | if (type_dependent_expression_p (object)) | |
1683 | return build_nt (CALL_EXPR, orig_fn, orig_args); | |
1684 | object = build_non_dependent_expr (object); | |
1685 | } | |
1686 | ||
1687 | result = build_new_method_call (object, fn, args, NULL_TREE, | |
1688 | (disallow_virtual | |
1689 | ? LOOKUP_NONVIRTUAL : 0)); | |
4ba126e4 MM |
1690 | } |
1691 | else if (is_overloaded_fn (fn)) | |
1692 | /* A call to a namespace-scope function. */ | |
d17811fd | 1693 | result = build_new_function_call (fn, args); |
a723baf1 MM |
1694 | else if (TREE_CODE (fn) == PSEUDO_DTOR_EXPR) |
1695 | { | |
a723baf1 MM |
1696 | if (args) |
1697 | error ("arguments to destructor are not allowed"); | |
1698 | /* Mark the pseudo-destructor call as having side-effects so | |
1699 | that we do not issue warnings about its use. */ | |
1700 | result = build1 (NOP_EXPR, | |
1701 | void_type_node, | |
1702 | TREE_OPERAND (fn, 0)); | |
1703 | TREE_SIDE_EFFECTS (result) = 1; | |
a723baf1 | 1704 | } |
4ba126e4 | 1705 | else if (CLASS_TYPE_P (TREE_TYPE (fn))) |
d17811fd MM |
1706 | /* If the "function" is really an object of class type, it might |
1707 | have an overloaded `operator ()'. */ | |
1708 | result = build_new_op (CALL_EXPR, LOOKUP_NORMAL, fn, args, NULL_TREE); | |
1709 | if (!result) | |
1710 | /* A call where the function is unknown. */ | |
1711 | result = build_function_call (fn, args); | |
4ba126e4 | 1712 | |
d17811fd | 1713 | if (processing_template_decl) |
6d80c4b9 MM |
1714 | { |
1715 | result = build (CALL_EXPR, TREE_TYPE (result), orig_fn, orig_args); | |
1716 | KOENIG_LOOKUP_P (result) = koenig_p; | |
1717 | } | |
d17811fd | 1718 | return result; |
b4c4a9ec MM |
1719 | } |
1720 | ||
1721 | /* Finish a call to a postfix increment or decrement or EXPR. (Which | |
1722 | is indicated by CODE, which should be POSTINCREMENT_EXPR or | |
1723 | POSTDECREMENT_EXPR.) */ | |
1724 | ||
1725 | tree | |
3a978d72 | 1726 | finish_increment_expr (tree expr, enum tree_code code) |
b4c4a9ec | 1727 | { |
b4c4a9ec MM |
1728 | return build_x_unary_op (code, expr); |
1729 | } | |
1730 | ||
1731 | /* Finish a use of `this'. Returns an expression for `this'. */ | |
1732 | ||
1733 | tree | |
3a978d72 | 1734 | finish_this_expr (void) |
b4c4a9ec MM |
1735 | { |
1736 | tree result; | |
1737 | ||
1738 | if (current_class_ptr) | |
1739 | { | |
b4c4a9ec MM |
1740 | result = current_class_ptr; |
1741 | } | |
1742 | else if (current_function_decl | |
1743 | && DECL_STATIC_FUNCTION_P (current_function_decl)) | |
1744 | { | |
8251199e | 1745 | error ("`this' is unavailable for static member functions"); |
b4c4a9ec MM |
1746 | result = error_mark_node; |
1747 | } | |
1748 | else | |
1749 | { | |
1750 | if (current_function_decl) | |
8251199e | 1751 | error ("invalid use of `this' in non-member function"); |
b4c4a9ec | 1752 | else |
8251199e | 1753 | error ("invalid use of `this' at top level"); |
b4c4a9ec MM |
1754 | result = error_mark_node; |
1755 | } | |
1756 | ||
1757 | return result; | |
1758 | } | |
1759 | ||
1760 | /* Finish a member function call using OBJECT and ARGS as arguments to | |
1761 | FN. Returns an expression for the call. */ | |
1762 | ||
1763 | tree | |
3a978d72 | 1764 | finish_object_call_expr (tree fn, tree object, tree args) |
b4c4a9ec | 1765 | { |
c219b878 | 1766 | if (DECL_DECLARES_TYPE_P (fn)) |
c68c56f7 MM |
1767 | { |
1768 | if (processing_template_decl) | |
1769 | /* This can happen on code like: | |
1770 | ||
1771 | class X; | |
1772 | template <class T> void f(T t) { | |
1773 | t.X(); | |
1774 | } | |
1775 | ||
1776 | We just grab the underlying IDENTIFIER. */ | |
1777 | fn = DECL_NAME (fn); | |
1778 | else | |
1779 | { | |
33bd39a2 | 1780 | error ("calling type `%T' like a method", fn); |
c68c56f7 MM |
1781 | return error_mark_node; |
1782 | } | |
1783 | } | |
4ba126e4 | 1784 | |
a723baf1 MM |
1785 | if (processing_template_decl) |
1786 | return build_nt (CALL_EXPR, | |
1787 | build_nt (COMPONENT_REF, object, fn), | |
1788 | args); | |
1789 | ||
50ad9642 MM |
1790 | if (name_p (fn)) |
1791 | return build_method_call (object, fn, args, NULL_TREE, LOOKUP_NORMAL); | |
1792 | else | |
1793 | return build_new_method_call (object, fn, args, NULL_TREE, LOOKUP_NORMAL); | |
b4c4a9ec MM |
1794 | } |
1795 | ||
a723baf1 MM |
1796 | /* Finish a pseudo-destructor expression. If SCOPE is NULL, the |
1797 | expression was of the form `OBJECT.~DESTRUCTOR' where DESTRUCTOR is | |
1798 | the TYPE for the type given. If SCOPE is non-NULL, the expression | |
1799 | was of the form `OBJECT.SCOPE::~DESTRUCTOR'. */ | |
b4c4a9ec MM |
1800 | |
1801 | tree | |
3a978d72 | 1802 | finish_pseudo_destructor_expr (tree object, tree scope, tree destructor) |
b4c4a9ec | 1803 | { |
a723baf1 MM |
1804 | if (destructor == error_mark_node) |
1805 | return error_mark_node; | |
40242ccf | 1806 | |
a723baf1 | 1807 | my_friendly_assert (TYPE_P (destructor), 20010905); |
b4c4a9ec | 1808 | |
a723baf1 MM |
1809 | if (!processing_template_decl) |
1810 | { | |
1811 | if (scope == error_mark_node) | |
1812 | { | |
1813 | error ("invalid qualifying scope in pseudo-destructor name"); | |
1814 | return error_mark_node; | |
1815 | } | |
1816 | ||
1817 | if (!same_type_p (TREE_TYPE (object), destructor)) | |
1818 | { | |
1819 | error ("`%E' is not of type `%T'", object, destructor); | |
1820 | return error_mark_node; | |
1821 | } | |
1822 | } | |
b4c4a9ec | 1823 | |
a723baf1 | 1824 | return build (PSEUDO_DTOR_EXPR, void_type_node, object, scope, destructor); |
b4c4a9ec MM |
1825 | } |
1826 | ||
ce4a0391 MM |
1827 | /* Finish an expression of the form CODE EXPR. */ |
1828 | ||
1829 | tree | |
3a978d72 | 1830 | finish_unary_op_expr (enum tree_code code, tree expr) |
ce4a0391 MM |
1831 | { |
1832 | tree result = build_x_unary_op (code, expr); | |
7c355bca ML |
1833 | /* Inside a template, build_x_unary_op does not fold the |
1834 | expression. So check whether the result is folded before | |
1835 | setting TREE_NEGATED_INT. */ | |
1836 | if (code == NEGATE_EXPR && TREE_CODE (expr) == INTEGER_CST | |
88b4335f NS |
1837 | && TREE_CODE (result) == INTEGER_CST |
1838 | && !TREE_UNSIGNED (TREE_TYPE (result)) | |
1839 | && INT_CST_LT (result, integer_zero_node)) | |
ce4a0391 MM |
1840 | TREE_NEGATED_INT (result) = 1; |
1841 | overflow_warning (result); | |
1842 | return result; | |
1843 | } | |
1844 | ||
a723baf1 MM |
1845 | /* Finish a compound-literal expression. TYPE is the type to which |
1846 | the INITIALIZER_LIST is being cast. */ | |
1847 | ||
1848 | tree | |
3a978d72 | 1849 | finish_compound_literal (tree type, tree initializer_list) |
a723baf1 MM |
1850 | { |
1851 | tree compound_literal; | |
1852 | ||
1853 | /* Build a CONSTRUCTOR for the INITIALIZER_LIST. */ | |
dcf92453 | 1854 | compound_literal = build_constructor (NULL_TREE, initializer_list); |
a723baf1 MM |
1855 | /* Mark it as a compound-literal. */ |
1856 | TREE_HAS_CONSTRUCTOR (compound_literal) = 1; | |
1857 | if (processing_template_decl) | |
1858 | TREE_TYPE (compound_literal) = type; | |
1859 | else | |
1860 | { | |
1861 | /* Check the initialization. */ | |
1862 | compound_literal = digest_init (type, compound_literal, NULL); | |
1863 | /* If the TYPE was an array type with an unknown bound, then we can | |
1864 | figure out the dimension now. For example, something like: | |
1865 | ||
1866 | `(int []) { 2, 3 }' | |
1867 | ||
1868 | implies that the array has two elements. */ | |
1869 | if (TREE_CODE (type) == ARRAY_TYPE && !COMPLETE_TYPE_P (type)) | |
1870 | complete_array_type (type, compound_literal, 1); | |
1871 | } | |
1872 | ||
1873 | return compound_literal; | |
1874 | } | |
1875 | ||
5f261ba9 MM |
1876 | /* Return the declaration for the function-name variable indicated by |
1877 | ID. */ | |
1878 | ||
1879 | tree | |
1880 | finish_fname (tree id) | |
1881 | { | |
1882 | tree decl; | |
1883 | ||
1884 | decl = fname_decl (C_RID_CODE (id), id); | |
1885 | if (processing_template_decl) | |
10b1d5e7 | 1886 | decl = DECL_NAME (decl); |
5f261ba9 MM |
1887 | return decl; |
1888 | } | |
1889 | ||
15c7fb9c | 1890 | /* Begin a function definition declared with DECL_SPECS, ATTRIBUTES, |
838dfd8a | 1891 | and DECLARATOR. Returns nonzero if the function-declaration is |
0e339752 | 1892 | valid. */ |
b4c4a9ec MM |
1893 | |
1894 | int | |
3a978d72 | 1895 | begin_function_definition (tree decl_specs, tree attributes, tree declarator) |
b4c4a9ec | 1896 | { |
15c7fb9c | 1897 | if (!start_function (decl_specs, declarator, attributes, SF_DEFAULT)) |
b4c4a9ec | 1898 | return 0; |
1f51a992 | 1899 | |
39c01e4c MM |
1900 | /* The things we're about to see are not directly qualified by any |
1901 | template headers we've seen thus far. */ | |
1902 | reset_specialization (); | |
1903 | ||
b4c4a9ec MM |
1904 | return 1; |
1905 | } | |
1906 | ||
8014a339 | 1907 | /* Finish a translation unit. */ |
ce4a0391 MM |
1908 | |
1909 | void | |
3a978d72 | 1910 | finish_translation_unit (void) |
ce4a0391 MM |
1911 | { |
1912 | /* In case there were missing closebraces, | |
1913 | get us back to the global binding level. */ | |
273a708f | 1914 | pop_everything (); |
ce4a0391 MM |
1915 | while (current_namespace != global_namespace) |
1916 | pop_namespace (); | |
0ba8a114 | 1917 | |
c6002625 | 1918 | /* Do file scope __FUNCTION__ et al. */ |
0ba8a114 | 1919 | finish_fname_decls (); |
ce4a0391 MM |
1920 | } |
1921 | ||
b4c4a9ec MM |
1922 | /* Finish a template type parameter, specified as AGGR IDENTIFIER. |
1923 | Returns the parameter. */ | |
1924 | ||
1925 | tree | |
3a978d72 | 1926 | finish_template_type_parm (tree aggr, tree identifier) |
b4c4a9ec | 1927 | { |
6eabb241 | 1928 | if (aggr != class_type_node) |
b4c4a9ec | 1929 | { |
8251199e | 1930 | pedwarn ("template type parameters must use the keyword `class' or `typename'"); |
b4c4a9ec MM |
1931 | aggr = class_type_node; |
1932 | } | |
1933 | ||
1934 | return build_tree_list (aggr, identifier); | |
1935 | } | |
1936 | ||
1937 | /* Finish a template template parameter, specified as AGGR IDENTIFIER. | |
1938 | Returns the parameter. */ | |
1939 | ||
1940 | tree | |
3a978d72 | 1941 | finish_template_template_parm (tree aggr, tree identifier) |
b4c4a9ec MM |
1942 | { |
1943 | tree decl = build_decl (TYPE_DECL, identifier, NULL_TREE); | |
1944 | tree tmpl = build_lang_decl (TEMPLATE_DECL, identifier, NULL_TREE); | |
1945 | DECL_TEMPLATE_PARMS (tmpl) = current_template_parms; | |
1946 | DECL_TEMPLATE_RESULT (tmpl) = decl; | |
c727aa5e | 1947 | DECL_ARTIFICIAL (decl) = 1; |
b4c4a9ec MM |
1948 | end_template_decl (); |
1949 | ||
b37bf5bd NS |
1950 | my_friendly_assert (DECL_TEMPLATE_PARMS (tmpl), 20010110); |
1951 | ||
b4c4a9ec MM |
1952 | return finish_template_type_parm (aggr, tmpl); |
1953 | } | |
ce4a0391 | 1954 | |
8ba658ee MM |
1955 | /* ARGUMENT is the default-argument value for a template template |
1956 | parameter. If ARGUMENT is invalid, issue error messages and return | |
1957 | the ERROR_MARK_NODE. Otherwise, ARGUMENT itself is returned. */ | |
1958 | ||
1959 | tree | |
1960 | check_template_template_default_arg (tree argument) | |
1961 | { | |
1962 | if (TREE_CODE (argument) != TEMPLATE_DECL | |
1963 | && TREE_CODE (argument) != TEMPLATE_TEMPLATE_PARM | |
1964 | && TREE_CODE (argument) != TYPE_DECL | |
1965 | && TREE_CODE (argument) != UNBOUND_CLASS_TEMPLATE) | |
1966 | { | |
1967 | error ("invalid default template argument"); | |
1968 | return error_mark_node; | |
1969 | } | |
1970 | ||
1971 | return argument; | |
1972 | } | |
1973 | ||
ce4a0391 | 1974 | /* Finish a parameter list, indicated by PARMS. If ELLIPSIS is |
838dfd8a | 1975 | nonzero, the parameter list was terminated by a `...'. */ |
ce4a0391 MM |
1976 | |
1977 | tree | |
3a978d72 | 1978 | finish_parmlist (tree parms, int ellipsis) |
ce4a0391 | 1979 | { |
5cce22b6 NS |
1980 | if (parms) |
1981 | { | |
1982 | /* We mark the PARMS as a parmlist so that declarator processing can | |
1983 | disambiguate certain constructs. */ | |
1984 | TREE_PARMLIST (parms) = 1; | |
1985 | /* We do not append void_list_node here, but leave it to grokparms | |
1986 | to do that. */ | |
1987 | PARMLIST_ELLIPSIS_P (parms) = ellipsis; | |
1988 | } | |
ce4a0391 MM |
1989 | return parms; |
1990 | } | |
1991 | ||
1992 | /* Begin a class definition, as indicated by T. */ | |
1993 | ||
1994 | tree | |
3a978d72 | 1995 | begin_class_definition (tree t) |
ce4a0391 | 1996 | { |
7437519c ZW |
1997 | if (t == error_mark_node) |
1998 | return error_mark_node; | |
1999 | ||
522d6614 NS |
2000 | if (processing_template_parmlist) |
2001 | { | |
33bd39a2 | 2002 | error ("definition of `%#T' inside template parameter list", t); |
522d6614 NS |
2003 | return error_mark_node; |
2004 | } | |
47ee8904 MM |
2005 | /* A non-implicit typename comes from code like: |
2006 | ||
2007 | template <typename T> struct A { | |
2008 | template <typename U> struct A<T>::B ... | |
2009 | ||
2010 | This is erroneous. */ | |
2011 | else if (TREE_CODE (t) == TYPENAME_TYPE) | |
2012 | { | |
33bd39a2 | 2013 | error ("invalid definition of qualified type `%T'", t); |
47ee8904 MM |
2014 | t = error_mark_node; |
2015 | } | |
2016 | ||
2017 | if (t == error_mark_node || ! IS_AGGR_TYPE (t)) | |
ce4a0391 | 2018 | { |
33848bb0 | 2019 | t = make_aggr_type (RECORD_TYPE); |
ce4a0391 MM |
2020 | pushtag (make_anon_name (), t, 0); |
2021 | } | |
830fcda8 | 2022 | |
4c571114 MM |
2023 | /* If this type was already complete, and we see another definition, |
2024 | that's an error. */ | |
8fbc5ae7 | 2025 | if (COMPLETE_TYPE_P (t)) |
4223f82f MM |
2026 | { |
2027 | error ("redefinition of `%#T'", t); | |
2028 | cp_error_at ("previous definition of `%#T'", t); | |
2029 | return error_mark_node; | |
2030 | } | |
4c571114 | 2031 | |
b4f70b3d | 2032 | /* Update the location of the decl. */ |
f31686a3 | 2033 | DECL_SOURCE_LOCATION (TYPE_NAME (t)) = input_location; |
b4f70b3d | 2034 | |
4c571114 | 2035 | if (TYPE_BEING_DEFINED (t)) |
ce4a0391 | 2036 | { |
33848bb0 | 2037 | t = make_aggr_type (TREE_CODE (t)); |
ce4a0391 | 2038 | pushtag (TYPE_IDENTIFIER (t), t, 0); |
ce4a0391 | 2039 | } |
ff350acd | 2040 | maybe_process_partial_specialization (t); |
29370796 | 2041 | pushclass (t); |
ce4a0391 | 2042 | TYPE_BEING_DEFINED (t) = 1; |
55760a0c | 2043 | TYPE_PACKED (t) = flag_pack_struct; |
ce4a0391 MM |
2044 | /* Reset the interface data, at the earliest possible |
2045 | moment, as it might have been set via a class foo; | |
2046 | before. */ | |
1951a1b6 JM |
2047 | if (! TYPE_ANONYMOUS_P (t)) |
2048 | { | |
2049 | CLASSTYPE_INTERFACE_ONLY (t) = interface_only; | |
2050 | SET_CLASSTYPE_INTERFACE_UNKNOWN_X | |
2051 | (t, interface_unknown); | |
2052 | } | |
ce4a0391 MM |
2053 | reset_specialization(); |
2054 | ||
b7975aed MM |
2055 | /* Make a declaration for this class in its own scope. */ |
2056 | build_self_reference (); | |
2057 | ||
830fcda8 | 2058 | return t; |
ce4a0391 MM |
2059 | } |
2060 | ||
61a127b3 MM |
2061 | /* Finish the member declaration given by DECL. */ |
2062 | ||
2063 | void | |
3a978d72 | 2064 | finish_member_declaration (tree decl) |
61a127b3 MM |
2065 | { |
2066 | if (decl == error_mark_node || decl == NULL_TREE) | |
2067 | return; | |
2068 | ||
2069 | if (decl == void_type_node) | |
2070 | /* The COMPONENT was a friend, not a member, and so there's | |
2071 | nothing for us to do. */ | |
2072 | return; | |
2073 | ||
2074 | /* We should see only one DECL at a time. */ | |
2075 | my_friendly_assert (TREE_CHAIN (decl) == NULL_TREE, 0); | |
2076 | ||
2077 | /* Set up access control for DECL. */ | |
2078 | TREE_PRIVATE (decl) | |
2079 | = (current_access_specifier == access_private_node); | |
2080 | TREE_PROTECTED (decl) | |
2081 | = (current_access_specifier == access_protected_node); | |
2082 | if (TREE_CODE (decl) == TEMPLATE_DECL) | |
2083 | { | |
17aec3eb RK |
2084 | TREE_PRIVATE (DECL_TEMPLATE_RESULT (decl)) = TREE_PRIVATE (decl); |
2085 | TREE_PROTECTED (DECL_TEMPLATE_RESULT (decl)) = TREE_PROTECTED (decl); | |
61a127b3 MM |
2086 | } |
2087 | ||
2088 | /* Mark the DECL as a member of the current class. */ | |
4f1c5b7d | 2089 | DECL_CONTEXT (decl) = current_class_type; |
61a127b3 | 2090 | |
421844e7 MM |
2091 | /* [dcl.link] |
2092 | ||
2093 | A C language linkage is ignored for the names of class members | |
2094 | and the member function type of class member functions. */ | |
2095 | if (DECL_LANG_SPECIFIC (decl) && DECL_LANGUAGE (decl) == lang_c) | |
5d2ed28c | 2096 | SET_DECL_LANGUAGE (decl, lang_cplusplus); |
421844e7 | 2097 | |
61a127b3 MM |
2098 | /* Put functions on the TYPE_METHODS list and everything else on the |
2099 | TYPE_FIELDS list. Note that these are built up in reverse order. | |
2100 | We reverse them (to obtain declaration order) in finish_struct. */ | |
2101 | if (TREE_CODE (decl) == FUNCTION_DECL | |
2102 | || DECL_FUNCTION_TEMPLATE_P (decl)) | |
2103 | { | |
2104 | /* We also need to add this function to the | |
2105 | CLASSTYPE_METHOD_VEC. */ | |
452a394b | 2106 | add_method (current_class_type, decl, /*error_p=*/0); |
61a127b3 MM |
2107 | |
2108 | TREE_CHAIN (decl) = TYPE_METHODS (current_class_type); | |
2109 | TYPE_METHODS (current_class_type) = decl; | |
f139561c MM |
2110 | |
2111 | maybe_add_class_template_decl_list (current_class_type, decl, | |
2112 | /*friend_p=*/0); | |
61a127b3 | 2113 | } |
f139561c | 2114 | /* Enter the DECL into the scope of the class. */ |
fd9aef9d | 2115 | else if ((TREE_CODE (decl) == USING_DECL && TREE_TYPE (decl)) |
399dedb9 | 2116 | || pushdecl_class_level (decl)) |
61a127b3 MM |
2117 | { |
2118 | /* All TYPE_DECLs go at the end of TYPE_FIELDS. Ordinary fields | |
2119 | go at the beginning. The reason is that lookup_field_1 | |
2120 | searches the list in order, and we want a field name to | |
2121 | override a type name so that the "struct stat hack" will | |
2122 | work. In particular: | |
2123 | ||
2124 | struct S { enum E { }; int E } s; | |
2125 | s.E = 3; | |
2126 | ||
0e339752 | 2127 | is valid. In addition, the FIELD_DECLs must be maintained in |
61a127b3 MM |
2128 | declaration order so that class layout works as expected. |
2129 | However, we don't need that order until class layout, so we | |
2130 | save a little time by putting FIELD_DECLs on in reverse order | |
2131 | here, and then reversing them in finish_struct_1. (We could | |
2132 | also keep a pointer to the correct insertion points in the | |
2133 | list.) */ | |
2134 | ||
2135 | if (TREE_CODE (decl) == TYPE_DECL) | |
2136 | TYPE_FIELDS (current_class_type) | |
2137 | = chainon (TYPE_FIELDS (current_class_type), decl); | |
2138 | else | |
2139 | { | |
2140 | TREE_CHAIN (decl) = TYPE_FIELDS (current_class_type); | |
2141 | TYPE_FIELDS (current_class_type) = decl; | |
2142 | } | |
8f032717 | 2143 | |
f139561c MM |
2144 | maybe_add_class_template_decl_list (current_class_type, decl, |
2145 | /*friend_p=*/0); | |
61a127b3 MM |
2146 | } |
2147 | } | |
2148 | ||
35acd3f2 MM |
2149 | /* Finish processing the declaration of a member class template |
2150 | TYPES whose template parameters are given by PARMS. */ | |
2151 | ||
2152 | tree | |
3a978d72 | 2153 | finish_member_class_template (tree types) |
35acd3f2 | 2154 | { |
36a117a5 MM |
2155 | tree t; |
2156 | ||
2157 | /* If there are declared, but undefined, partial specializations | |
2158 | mixed in with the typespecs they will not yet have passed through | |
2159 | maybe_process_partial_specialization, so we do that here. */ | |
2160 | for (t = types; t != NULL_TREE; t = TREE_CHAIN (t)) | |
2161 | if (IS_AGGR_TYPE_CODE (TREE_CODE (TREE_VALUE (t)))) | |
2162 | maybe_process_partial_specialization (TREE_VALUE (t)); | |
2163 | ||
61a127b3 | 2164 | grok_x_components (types); |
35acd3f2 MM |
2165 | if (TYPE_CONTEXT (TREE_VALUE (types)) != current_class_type) |
2166 | /* The component was in fact a friend declaration. We avoid | |
2167 | finish_member_template_decl performing certain checks by | |
2168 | unsetting TYPES. */ | |
2169 | types = NULL_TREE; | |
61a127b3 MM |
2170 | |
2171 | finish_member_template_decl (types); | |
2172 | ||
35acd3f2 MM |
2173 | /* As with other component type declarations, we do |
2174 | not store the new DECL on the list of | |
2175 | component_decls. */ | |
2176 | return NULL_TREE; | |
2177 | } | |
36a117a5 | 2178 | |
306ef644 | 2179 | /* Finish processing a complete template declaration. The PARMS are |
36a117a5 MM |
2180 | the template parameters. */ |
2181 | ||
2182 | void | |
3a978d72 | 2183 | finish_template_decl (tree parms) |
36a117a5 MM |
2184 | { |
2185 | if (parms) | |
2186 | end_template_decl (); | |
2187 | else | |
2188 | end_specialization (); | |
2189 | } | |
2190 | ||
509fc277 | 2191 | /* Finish processing a template-id (which names a type) of the form |
36a117a5 | 2192 | NAME < ARGS >. Return the TYPE_DECL for the type named by the |
838dfd8a | 2193 | template-id. If ENTERING_SCOPE is nonzero we are about to enter |
36a117a5 MM |
2194 | the scope of template-id indicated. */ |
2195 | ||
2196 | tree | |
3a978d72 | 2197 | finish_template_type (tree name, tree args, int entering_scope) |
36a117a5 MM |
2198 | { |
2199 | tree decl; | |
2200 | ||
2201 | decl = lookup_template_class (name, args, | |
42eaed49 NS |
2202 | NULL_TREE, NULL_TREE, entering_scope, |
2203 | tf_error | tf_warning | tf_user); | |
36a117a5 MM |
2204 | if (decl != error_mark_node) |
2205 | decl = TYPE_STUB_DECL (decl); | |
2206 | ||
2207 | return decl; | |
2208 | } | |
648f19f6 | 2209 | |
ea6021e8 MM |
2210 | /* Finish processing a BASE_CLASS with the indicated ACCESS_SPECIFIER. |
2211 | Return a TREE_LIST containing the ACCESS_SPECIFIER and the | |
2212 | BASE_CLASS, or NULL_TREE if an error occurred. The | |
aba649ba | 2213 | ACCESS_SPECIFIER is one of |
ea6021e8 MM |
2214 | access_{default,public,protected_private}[_virtual]_node.*/ |
2215 | ||
2216 | tree | |
dbbf88d1 | 2217 | finish_base_specifier (tree base, tree access, bool virtual_p) |
ea6021e8 | 2218 | { |
ea6021e8 MM |
2219 | tree result; |
2220 | ||
dbbf88d1 | 2221 | if (base == error_mark_node) |
acb044ee GDR |
2222 | { |
2223 | error ("invalid base-class specification"); | |
2224 | result = NULL_TREE; | |
2225 | } | |
dbbf88d1 | 2226 | else if (! is_aggr_type (base, 1)) |
ea6021e8 | 2227 | result = NULL_TREE; |
ea6021e8 | 2228 | else |
bb92901d | 2229 | { |
dbbf88d1 | 2230 | if (cp_type_quals (base) != 0) |
bb92901d | 2231 | { |
dbbf88d1 NS |
2232 | error ("base class `%T' has cv qualifiers", base); |
2233 | base = TYPE_MAIN_VARIANT (base); | |
bb92901d | 2234 | } |
dbbf88d1 NS |
2235 | result = build_tree_list (access, base); |
2236 | TREE_VIA_VIRTUAL (result) = virtual_p; | |
bb92901d | 2237 | } |
ea6021e8 MM |
2238 | |
2239 | return result; | |
2240 | } | |
61a127b3 MM |
2241 | |
2242 | /* Called when multiple declarators are processed. If that is not | |
cd0be382 | 2243 | permitted in this context, an error is issued. */ |
61a127b3 MM |
2244 | |
2245 | void | |
3a978d72 | 2246 | check_multiple_declarators (void) |
61a127b3 MM |
2247 | { |
2248 | /* [temp] | |
2249 | ||
2250 | In a template-declaration, explicit specialization, or explicit | |
2251 | instantiation the init-declarator-list in the declaration shall | |
2252 | contain at most one declarator. | |
2253 | ||
2254 | We don't just use PROCESSING_TEMPLATE_DECL for the first | |
0e339752 | 2255 | condition since that would disallow the perfectly valid code, |
61a127b3 | 2256 | like `template <class T> struct S { int i, j; };'. */ |
5f261ba9 | 2257 | if (at_function_scope_p ()) |
61a127b3 MM |
2258 | /* It's OK to write `template <class T> void f() { int i, j;}'. */ |
2259 | return; | |
2260 | ||
2261 | if (PROCESSING_REAL_TEMPLATE_DECL_P () | |
2262 | || processing_explicit_instantiation | |
2263 | || processing_specialization) | |
33bd39a2 | 2264 | error ("multiple declarators in template declaration"); |
61a127b3 MM |
2265 | } |
2266 | ||
22038b2c NS |
2267 | /* Issue a diagnostic that NAME cannot be found in SCOPE. */ |
2268 | ||
2269 | void | |
2270 | qualified_name_lookup_error (tree scope, tree name) | |
2271 | { | |
2272 | if (TYPE_P (scope)) | |
2273 | { | |
2274 | if (!COMPLETE_TYPE_P (scope)) | |
2275 | error ("incomplete type `%T' used in nested name specifier", scope); | |
2276 | else | |
2277 | error ("`%D' is not a member of `%T'", name, scope); | |
2278 | } | |
2279 | else if (scope != global_namespace) | |
2280 | error ("`%D' is not a member of `%D'", name, scope); | |
2281 | else | |
2282 | error ("`::%D' has not been declared", name); | |
2283 | } | |
2284 | ||
b3445994 MM |
2285 | /* ID_EXPRESSION is a representation of parsed, but unprocessed, |
2286 | id-expression. (See cp_parser_id_expression for details.) SCOPE, | |
2287 | if non-NULL, is the type or namespace used to explicitly qualify | |
2288 | ID_EXPRESSION. DECL is the entity to which that name has been | |
2289 | resolved. | |
2290 | ||
2291 | *CONSTANT_EXPRESSION_P is true if we are presently parsing a | |
2292 | constant-expression. In that case, *NON_CONSTANT_EXPRESSION_P will | |
2293 | be set to true if this expression isn't permitted in a | |
2294 | constant-expression, but it is otherwise not set by this function. | |
2295 | *ALLOW_NON_CONSTANT_EXPRESSION_P is true if we are parsing a | |
2296 | constant-expression, but a non-constant expression is also | |
2297 | permissible. | |
2298 | ||
2299 | If an error occurs, and it is the kind of error that might cause | |
2300 | the parser to abort a tentative parse, *ERROR_MSG is filled in. It | |
2301 | is the caller's responsibility to issue the message. *ERROR_MSG | |
2302 | will be a string with static storage duration, so the caller need | |
2303 | not "free" it. | |
2304 | ||
2305 | Return an expression for the entity, after issuing appropriate | |
2306 | diagnostics. This function is also responsible for transforming a | |
2307 | reference to a non-static member into a COMPONENT_REF that makes | |
2308 | the use of "this" explicit. | |
2309 | ||
2310 | Upon return, *IDK will be filled in appropriately. */ | |
2311 | ||
2312 | tree | |
2313 | finish_id_expression (tree id_expression, | |
2314 | tree decl, | |
2315 | tree scope, | |
2316 | cp_id_kind *idk, | |
2317 | tree *qualifying_class, | |
2318 | bool constant_expression_p, | |
2319 | bool allow_non_constant_expression_p, | |
2320 | bool *non_constant_expression_p, | |
2321 | const char **error_msg) | |
2322 | { | |
2323 | /* Initialize the output parameters. */ | |
2324 | *idk = CP_ID_KIND_NONE; | |
2325 | *error_msg = NULL; | |
2326 | ||
2327 | if (id_expression == error_mark_node) | |
2328 | return error_mark_node; | |
2329 | /* If we have a template-id, then no further lookup is | |
2330 | required. If the template-id was for a template-class, we | |
2331 | will sometimes have a TYPE_DECL at this point. */ | |
2332 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
ee935db4 | 2333 | || TREE_CODE (decl) == TYPE_DECL) |
b3445994 MM |
2334 | ; |
2335 | /* Look up the name. */ | |
2336 | else | |
2337 | { | |
2338 | if (decl == error_mark_node) | |
2339 | { | |
2340 | /* Name lookup failed. */ | |
2341 | if (scope && (!TYPE_P (scope) || !dependent_type_p (scope))) | |
2342 | { | |
2343 | /* Qualified name lookup failed, and the qualifying name | |
22038b2c NS |
2344 | was not a dependent type. That is always an |
2345 | error. */ | |
2346 | qualified_name_lookup_error (scope, id_expression); | |
b3445994 MM |
2347 | return error_mark_node; |
2348 | } | |
2349 | else if (!scope) | |
2350 | { | |
2351 | /* It may be resolved via Koenig lookup. */ | |
2352 | *idk = CP_ID_KIND_UNQUALIFIED; | |
2353 | return id_expression; | |
2354 | } | |
2355 | } | |
2356 | /* If DECL is a variable that would be out of scope under | |
2357 | ANSI/ISO rules, but in scope in the ARM, name lookup | |
2358 | will succeed. Issue a diagnostic here. */ | |
2359 | else | |
2360 | decl = check_for_out_of_scope_variable (decl); | |
2361 | ||
2362 | /* Remember that the name was used in the definition of | |
2363 | the current class so that we can check later to see if | |
2364 | the meaning would have been different after the class | |
2365 | was entirely defined. */ | |
2366 | if (!scope && decl != error_mark_node) | |
2367 | maybe_note_name_used_in_class (id_expression, decl); | |
2368 | } | |
2369 | ||
2370 | /* If we didn't find anything, or what we found was a type, | |
2371 | then this wasn't really an id-expression. */ | |
2372 | if (TREE_CODE (decl) == TEMPLATE_DECL | |
2373 | && !DECL_FUNCTION_TEMPLATE_P (decl)) | |
2374 | { | |
2375 | *error_msg = "missing template arguments"; | |
2376 | return error_mark_node; | |
2377 | } | |
2378 | else if (TREE_CODE (decl) == TYPE_DECL | |
2379 | || TREE_CODE (decl) == NAMESPACE_DECL) | |
2380 | { | |
2381 | *error_msg = "expected primary-expression"; | |
2382 | return error_mark_node; | |
2383 | } | |
2384 | ||
2385 | /* If the name resolved to a template parameter, there is no | |
2386 | need to look it up again later. Similarly, we resolve | |
2387 | enumeration constants to their underlying values. */ | |
2388 | if (TREE_CODE (decl) == CONST_DECL) | |
2389 | { | |
2390 | *idk = CP_ID_KIND_NONE; | |
2391 | if (DECL_TEMPLATE_PARM_P (decl) || !processing_template_decl) | |
2392 | return DECL_INITIAL (decl); | |
2393 | return decl; | |
2394 | } | |
2395 | else | |
2396 | { | |
2397 | bool dependent_p; | |
2398 | ||
2399 | /* If the declaration was explicitly qualified indicate | |
2400 | that. The semantics of `A::f(3)' are different than | |
2401 | `f(3)' if `f' is virtual. */ | |
2402 | *idk = (scope | |
2403 | ? CP_ID_KIND_QUALIFIED | |
2404 | : (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2405 | ? CP_ID_KIND_TEMPLATE_ID | |
2406 | : CP_ID_KIND_UNQUALIFIED)); | |
2407 | ||
2408 | ||
2409 | /* [temp.dep.expr] | |
2410 | ||
2411 | An id-expression is type-dependent if it contains an | |
2412 | identifier that was declared with a dependent type. | |
2413 | ||
b3445994 MM |
2414 | The standard is not very specific about an id-expression that |
2415 | names a set of overloaded functions. What if some of them | |
2416 | have dependent types and some of them do not? Presumably, | |
2417 | such a name should be treated as a dependent name. */ | |
2418 | /* Assume the name is not dependent. */ | |
2419 | dependent_p = false; | |
2420 | if (!processing_template_decl) | |
2421 | /* No names are dependent outside a template. */ | |
2422 | ; | |
2423 | /* A template-id where the name of the template was not resolved | |
2424 | is definitely dependent. */ | |
2425 | else if (TREE_CODE (decl) == TEMPLATE_ID_EXPR | |
2426 | && (TREE_CODE (TREE_OPERAND (decl, 0)) | |
2427 | == IDENTIFIER_NODE)) | |
2428 | dependent_p = true; | |
2429 | /* For anything except an overloaded function, just check its | |
2430 | type. */ | |
2431 | else if (!is_overloaded_fn (decl)) | |
2432 | dependent_p | |
2433 | = dependent_type_p (TREE_TYPE (decl)); | |
2434 | /* For a set of overloaded functions, check each of the | |
2435 | functions. */ | |
2436 | else | |
2437 | { | |
2438 | tree fns = decl; | |
2439 | ||
2440 | if (BASELINK_P (fns)) | |
2441 | fns = BASELINK_FUNCTIONS (fns); | |
2442 | ||
2443 | /* For a template-id, check to see if the template | |
2444 | arguments are dependent. */ | |
2445 | if (TREE_CODE (fns) == TEMPLATE_ID_EXPR) | |
2446 | { | |
2447 | tree args = TREE_OPERAND (fns, 1); | |
2448 | dependent_p = any_dependent_template_arguments_p (args); | |
2449 | /* The functions are those referred to by the | |
2450 | template-id. */ | |
2451 | fns = TREE_OPERAND (fns, 0); | |
2452 | } | |
2453 | ||
2454 | /* If there are no dependent template arguments, go through | |
cd0be382 | 2455 | the overloaded functions. */ |
b3445994 MM |
2456 | while (fns && !dependent_p) |
2457 | { | |
2458 | tree fn = OVL_CURRENT (fns); | |
2459 | ||
2460 | /* Member functions of dependent classes are | |
2461 | dependent. */ | |
2462 | if (TREE_CODE (fn) == FUNCTION_DECL | |
2463 | && type_dependent_expression_p (fn)) | |
2464 | dependent_p = true; | |
2465 | else if (TREE_CODE (fn) == TEMPLATE_DECL | |
2466 | && dependent_template_p (fn)) | |
2467 | dependent_p = true; | |
2468 | ||
2469 | fns = OVL_NEXT (fns); | |
2470 | } | |
2471 | } | |
2472 | ||
2473 | /* If the name was dependent on a template parameter, we will | |
2474 | resolve the name at instantiation time. */ | |
2475 | if (dependent_p) | |
2476 | { | |
2477 | /* Create a SCOPE_REF for qualified names, if the scope is | |
2478 | dependent. */ | |
2479 | if (scope) | |
2480 | { | |
2481 | if (TYPE_P (scope)) | |
2482 | *qualifying_class = scope; | |
2483 | /* Since this name was dependent, the expression isn't | |
2484 | constant -- yet. No error is issued because it might | |
2485 | be constant when things are instantiated. */ | |
2486 | if (constant_expression_p) | |
2487 | *non_constant_expression_p = true; | |
2488 | if (TYPE_P (scope) && dependent_type_p (scope)) | |
2489 | return build_nt (SCOPE_REF, scope, id_expression); | |
2490 | else if (TYPE_P (scope) && DECL_P (decl)) | |
2491 | return build (SCOPE_REF, TREE_TYPE (decl), scope, | |
2492 | id_expression); | |
2493 | else | |
2494 | return decl; | |
2495 | } | |
2496 | /* A TEMPLATE_ID already contains all the information we | |
2497 | need. */ | |
2498 | if (TREE_CODE (id_expression) == TEMPLATE_ID_EXPR) | |
2499 | return id_expression; | |
2500 | /* Since this name was dependent, the expression isn't | |
2501 | constant -- yet. No error is issued because it might be | |
2502 | constant when things are instantiated. */ | |
2503 | if (constant_expression_p) | |
2504 | *non_constant_expression_p = true; | |
10b1d5e7 MM |
2505 | *idk = CP_ID_KIND_UNQUALIFIED_DEPENDENT; |
2506 | return id_expression; | |
b3445994 MM |
2507 | } |
2508 | ||
2509 | /* Only certain kinds of names are allowed in constant | |
2510 | expression. Enumerators have already been handled above. */ | |
2511 | if (constant_expression_p) | |
2512 | { | |
2513 | /* Non-type template parameters of integral or enumeration | |
2514 | type are OK. */ | |
2515 | if (TREE_CODE (decl) == TEMPLATE_PARM_INDEX | |
2516 | && INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (decl))) | |
2517 | ; | |
2518 | /* Const variables or static data members of integral or | |
2519 | enumeration types initialized with constant expressions | |
39703eb9 | 2520 | are OK. */ |
b3445994 MM |
2521 | else if (TREE_CODE (decl) == VAR_DECL |
2522 | && CP_TYPE_CONST_P (TREE_TYPE (decl)) | |
2523 | && INTEGRAL_OR_ENUMERATION_TYPE_P (TREE_TYPE (decl)) | |
39703eb9 | 2524 | && DECL_INITIALIZED_BY_CONSTANT_EXPRESSION_P (decl)) |
b3445994 MM |
2525 | ; |
2526 | else | |
2527 | { | |
2528 | if (!allow_non_constant_expression_p) | |
2529 | { | |
2530 | error ("`%D' cannot appear in a constant-expression", decl); | |
2531 | return error_mark_node; | |
2532 | } | |
2533 | *non_constant_expression_p = true; | |
2534 | } | |
2535 | } | |
415d4636 MM |
2536 | |
2537 | if (TREE_CODE (decl) == NAMESPACE_DECL) | |
9e95d15f NS |
2538 | { |
2539 | error ("use of namespace `%D' as expression", decl); | |
2540 | return error_mark_node; | |
2541 | } | |
2542 | else if (DECL_CLASS_TEMPLATE_P (decl)) | |
2543 | { | |
2544 | error ("use of class template `%T' as expression", decl); | |
2545 | return error_mark_node; | |
2546 | } | |
2547 | else if (TREE_CODE (decl) == TREE_LIST) | |
2548 | { | |
2549 | /* Ambiguous reference to base members. */ | |
2550 | error ("request for member `%D' is ambiguous in " | |
2551 | "multiple inheritance lattice", id_expression); | |
2552 | print_candidates (decl); | |
2553 | return error_mark_node; | |
2554 | } | |
415d4636 MM |
2555 | |
2556 | /* Mark variable-like entities as used. Functions are similarly | |
2557 | marked either below or after overload resolution. */ | |
2558 | if (TREE_CODE (decl) == VAR_DECL | |
2559 | || TREE_CODE (decl) == PARM_DECL | |
2560 | || TREE_CODE (decl) == RESULT_DECL) | |
2561 | mark_used (decl); | |
2562 | ||
2563 | if (scope) | |
2564 | { | |
2565 | decl = (adjust_result_of_qualified_name_lookup | |
2566 | (decl, scope, current_class_type)); | |
e20bcc5e JH |
2567 | |
2568 | if (TREE_CODE (decl) == FUNCTION_DECL) | |
2569 | mark_used (decl); | |
2570 | ||
415d4636 MM |
2571 | if (TREE_CODE (decl) == FIELD_DECL || BASELINK_P (decl)) |
2572 | *qualifying_class = scope; | |
2573 | else if (!processing_template_decl) | |
2574 | decl = convert_from_reference (decl); | |
2575 | else if (TYPE_P (scope)) | |
2576 | decl = build (SCOPE_REF, TREE_TYPE (decl), scope, decl); | |
2577 | } | |
9e95d15f NS |
2578 | else if (TREE_CODE (decl) == FIELD_DECL) |
2579 | decl = finish_non_static_data_member (decl, current_class_ref, | |
2580 | /*qualifying_scope=*/NULL_TREE); | |
2581 | else if (is_overloaded_fn (decl)) | |
2582 | { | |
2583 | tree first_fn = OVL_CURRENT (decl); | |
b3445994 | 2584 | |
9e95d15f NS |
2585 | if (TREE_CODE (first_fn) == TEMPLATE_DECL) |
2586 | first_fn = DECL_TEMPLATE_RESULT (first_fn); | |
415d4636 MM |
2587 | |
2588 | if (!really_overloaded_fn (decl)) | |
2589 | mark_used (first_fn); | |
2590 | ||
9e95d15f NS |
2591 | if (TREE_CODE (first_fn) == FUNCTION_DECL |
2592 | && DECL_FUNCTION_MEMBER_P (first_fn)) | |
2593 | { | |
2594 | /* A set of member functions. */ | |
2595 | decl = maybe_dummy_object (DECL_CONTEXT (first_fn), 0); | |
2596 | return finish_class_member_access_expr (decl, id_expression); | |
2597 | } | |
9e95d15f NS |
2598 | } |
2599 | else | |
2600 | { | |
2601 | if (TREE_CODE (decl) == VAR_DECL | |
2602 | || TREE_CODE (decl) == PARM_DECL | |
2603 | || TREE_CODE (decl) == RESULT_DECL) | |
2604 | { | |
2605 | tree context = decl_function_context (decl); | |
2606 | ||
2607 | if (context != NULL_TREE && context != current_function_decl | |
2608 | && ! TREE_STATIC (decl)) | |
2609 | { | |
2610 | error ("use of %s from containing function", | |
2611 | (TREE_CODE (decl) == VAR_DECL | |
2612 | ? "`auto' variable" : "parameter")); | |
2613 | cp_error_at (" `%#D' declared here", decl); | |
2614 | return error_mark_node; | |
2615 | } | |
2616 | } | |
2617 | ||
2618 | if (DECL_P (decl) && DECL_NONLOCAL (decl) | |
2619 | && DECL_CLASS_SCOPE_P (decl) | |
2620 | && DECL_CONTEXT (decl) != current_class_type) | |
2621 | { | |
2622 | tree path; | |
2623 | ||
2624 | path = currently_open_derived_class (DECL_CONTEXT (decl)); | |
2625 | perform_or_defer_access_check (TYPE_BINFO (path), decl); | |
2626 | } | |
2627 | ||
9e95d15f NS |
2628 | if (! processing_template_decl) |
2629 | decl = convert_from_reference (decl); | |
2630 | } | |
2631 | ||
b3445994 MM |
2632 | /* Resolve references to variables of anonymous unions |
2633 | into COMPONENT_REFs. */ | |
2634 | if (TREE_CODE (decl) == ALIAS_DECL) | |
2635 | decl = DECL_INITIAL (decl); | |
2636 | } | |
2637 | ||
2638 | if (TREE_DEPRECATED (decl)) | |
2639 | warn_deprecated_use (decl); | |
2640 | ||
2641 | return decl; | |
2642 | } | |
2643 | ||
0213a355 JM |
2644 | /* Implement the __typeof keyword: Return the type of EXPR, suitable for |
2645 | use as a type-specifier. */ | |
2646 | ||
b894fc05 | 2647 | tree |
3a978d72 | 2648 | finish_typeof (tree expr) |
b894fc05 | 2649 | { |
65a5559b MM |
2650 | tree type; |
2651 | ||
dffbbe80 | 2652 | if (type_dependent_expression_p (expr)) |
b894fc05 | 2653 | { |
65a5559b MM |
2654 | type = make_aggr_type (TYPEOF_TYPE); |
2655 | TYPE_FIELDS (type) = expr; | |
b894fc05 | 2656 | |
65a5559b | 2657 | return type; |
b894fc05 JM |
2658 | } |
2659 | ||
65a5559b MM |
2660 | type = TREE_TYPE (expr); |
2661 | ||
2662 | if (!type || type == unknown_type_node) | |
2663 | { | |
2664 | error ("type of `%E' is unknown", expr); | |
2665 | return error_mark_node; | |
2666 | } | |
2667 | ||
2668 | return type; | |
b894fc05 | 2669 | } |
558475f0 | 2670 | |
62409b39 MM |
2671 | /* Generate RTL for the statement T, and its substatements, and any |
2672 | other statements at its nesting level. */ | |
558475f0 | 2673 | |
54f7877c | 2674 | static void |
3a978d72 | 2675 | cp_expand_stmt (tree t) |
558475f0 | 2676 | { |
54f7877c | 2677 | switch (TREE_CODE (t)) |
62409b39 | 2678 | { |
54f7877c MM |
2679 | case TRY_BLOCK: |
2680 | genrtl_try_block (t); | |
2681 | break; | |
558475f0 | 2682 | |
52a11cbf RH |
2683 | case EH_SPEC_BLOCK: |
2684 | genrtl_eh_spec_block (t); | |
2685 | break; | |
2686 | ||
54f7877c MM |
2687 | case HANDLER: |
2688 | genrtl_handler (t); | |
2689 | break; | |
558475f0 | 2690 | |
9da99f7d NS |
2691 | case USING_STMT: |
2692 | break; | |
2693 | ||
54f7877c | 2694 | default: |
a98facb0 | 2695 | abort (); |
54f7877c MM |
2696 | break; |
2697 | } | |
558475f0 MM |
2698 | } |
2699 | ||
3eb24f73 MM |
2700 | /* Called from expand_body via walk_tree. Replace all AGGR_INIT_EXPRs |
2701 | will equivalent CALL_EXPRs. */ | |
2702 | ||
2703 | static tree | |
3a978d72 | 2704 | simplify_aggr_init_exprs_r (tree* tp, |
9eeb200f JM |
2705 | int* walk_subtrees, |
2706 | void* data ATTRIBUTE_UNUSED) | |
3eb24f73 | 2707 | { |
22e92ac3 MM |
2708 | /* We don't need to walk into types; there's nothing in a type that |
2709 | needs simplification. (And, furthermore, there are places we | |
2710 | actively don't want to go. For example, we don't want to wander | |
2711 | into the default arguments for a FUNCTION_DECL that appears in a | |
2712 | CALL_EXPR.) */ | |
9eeb200f | 2713 | if (TYPE_P (*tp)) |
22e92ac3 MM |
2714 | { |
2715 | *walk_subtrees = 0; | |
2716 | return NULL_TREE; | |
2717 | } | |
2718 | /* Only AGGR_INIT_EXPRs are interesting. */ | |
9eeb200f | 2719 | else if (TREE_CODE (*tp) != AGGR_INIT_EXPR) |
3eb24f73 MM |
2720 | return NULL_TREE; |
2721 | ||
9eeb200f JM |
2722 | simplify_aggr_init_expr (tp); |
2723 | ||
2724 | /* Keep iterating. */ | |
2725 | return NULL_TREE; | |
2726 | } | |
2727 | ||
2728 | /* Replace the AGGR_INIT_EXPR at *TP with an equivalent CALL_EXPR. This | |
2729 | function is broken out from the above for the benefit of the tree-ssa | |
2730 | project. */ | |
2731 | ||
2732 | void | |
2733 | simplify_aggr_init_expr (tree *tp) | |
2734 | { | |
2735 | tree aggr_init_expr = *tp; | |
2736 | ||
3eb24f73 | 2737 | /* Form an appropriate CALL_EXPR. */ |
9eeb200f JM |
2738 | tree fn = TREE_OPERAND (aggr_init_expr, 0); |
2739 | tree args = TREE_OPERAND (aggr_init_expr, 1); | |
2740 | tree slot = TREE_OPERAND (aggr_init_expr, 2); | |
2741 | tree type = TREE_TYPE (aggr_init_expr); | |
2742 | ||
2743 | tree call_expr; | |
2744 | enum style_t { ctor, arg, pcc } style; | |
4977bab6 | 2745 | |
3eb24f73 | 2746 | if (AGGR_INIT_VIA_CTOR_P (aggr_init_expr)) |
4977bab6 ZW |
2747 | style = ctor; |
2748 | #ifdef PCC_STATIC_STRUCT_RETURN | |
2749 | else if (1) | |
2750 | style = pcc; | |
2751 | #endif | |
2752 | else if (TREE_ADDRESSABLE (type)) | |
2753 | style = arg; | |
2754 | else | |
2755 | /* We shouldn't build an AGGR_INIT_EXPR if we don't need any special | |
2756 | handling. See build_cplus_new. */ | |
2757 | abort (); | |
2758 | ||
2759 | if (style == ctor || style == arg) | |
3eb24f73 | 2760 | { |
4977bab6 ZW |
2761 | /* Pass the address of the slot. If this is a constructor, we |
2762 | replace the first argument; otherwise, we tack on a new one. */ | |
9eeb200f JM |
2763 | tree addr; |
2764 | ||
4977bab6 ZW |
2765 | if (style == ctor) |
2766 | args = TREE_CHAIN (args); | |
2767 | ||
dffd7eb6 | 2768 | cxx_mark_addressable (slot); |
9eeb200f JM |
2769 | addr = build1 (ADDR_EXPR, build_pointer_type (TREE_TYPE (slot)), slot); |
2770 | if (style == arg) | |
2771 | { | |
2772 | /* The return type might have different cv-quals from the slot. */ | |
2773 | tree fntype = TREE_TYPE (TREE_TYPE (fn)); | |
2774 | #ifdef ENABLE_CHECKING | |
2775 | if (TREE_CODE (fntype) != FUNCTION_TYPE | |
2776 | && TREE_CODE (fntype) != METHOD_TYPE) | |
2777 | abort (); | |
2778 | #endif | |
2779 | addr = convert (build_pointer_type (TREE_TYPE (fntype)), addr); | |
2780 | } | |
2781 | ||
2782 | args = tree_cons (NULL_TREE, addr, args); | |
3eb24f73 | 2783 | } |
4977bab6 | 2784 | |
b850de4f MM |
2785 | call_expr = build (CALL_EXPR, |
2786 | TREE_TYPE (TREE_TYPE (TREE_TYPE (fn))), | |
2787 | fn, args, NULL_TREE); | |
3eb24f73 | 2788 | |
4977bab6 | 2789 | if (style == arg) |
89ea02fb JM |
2790 | /* Tell the backend that we've added our return slot to the argument |
2791 | list. */ | |
2792 | CALL_EXPR_HAS_RETURN_SLOT_ADDR (call_expr) = 1; | |
4977bab6 | 2793 | else if (style == pcc) |
3eb24f73 | 2794 | { |
4977bab6 ZW |
2795 | /* If we're using the non-reentrant PCC calling convention, then we |
2796 | need to copy the returned value out of the static buffer into the | |
2797 | SLOT. */ | |
78757caa | 2798 | push_deferring_access_checks (dk_no_check); |
46af705a JDA |
2799 | call_expr = build_aggr_init (slot, call_expr, |
2800 | DIRECT_BIND | LOOKUP_ONLYCONVERTING); | |
78757caa | 2801 | pop_deferring_access_checks (); |
3eb24f73 | 2802 | } |
3eb24f73 | 2803 | |
4977bab6 ZW |
2804 | /* We want to use the value of the initialized location as the |
2805 | result. */ | |
2806 | call_expr = build (COMPOUND_EXPR, type, | |
2807 | call_expr, slot); | |
3eb24f73 MM |
2808 | |
2809 | /* Replace the AGGR_INIT_EXPR with the CALL_EXPR. */ | |
2810 | TREE_CHAIN (call_expr) = TREE_CHAIN (aggr_init_expr); | |
2811 | *tp = call_expr; | |
3eb24f73 MM |
2812 | } |
2813 | ||
31f8e4f3 MM |
2814 | /* Emit all thunks to FN that should be emitted when FN is emitted. */ |
2815 | ||
2816 | static void | |
3a978d72 | 2817 | emit_associated_thunks (tree fn) |
31f8e4f3 MM |
2818 | { |
2819 | /* When we use vcall offsets, we emit thunks with the virtual | |
2820 | functions to which they thunk. The whole point of vcall offsets | |
2821 | is so that you can know statically the entire set of thunks that | |
2822 | will ever be needed for a given virtual function, thereby | |
2823 | enabling you to output all the thunks with the function itself. */ | |
3461fba7 | 2824 | if (DECL_VIRTUAL_P (fn)) |
31f8e4f3 | 2825 | { |
bb5e8a7f | 2826 | tree thunk; |
4977bab6 | 2827 | |
bb5e8a7f | 2828 | for (thunk = DECL_THUNKS (fn); thunk; thunk = TREE_CHAIN (thunk)) |
4977bab6 ZW |
2829 | { |
2830 | use_thunk (thunk, /*emit_p=*/1); | |
2831 | if (DECL_RESULT_THUNK_P (thunk)) | |
2832 | { | |
2833 | tree probe; | |
2834 | ||
2835 | for (probe = DECL_THUNKS (thunk); | |
2836 | probe; probe = TREE_CHAIN (probe)) | |
2837 | use_thunk (probe, /*emit_p=*/1); | |
2838 | } | |
2839 | } | |
31f8e4f3 MM |
2840 | } |
2841 | } | |
2842 | ||
558475f0 MM |
2843 | /* Generate RTL for FN. */ |
2844 | ||
2845 | void | |
3a978d72 | 2846 | expand_body (tree fn) |
558475f0 | 2847 | { |
367aa585 | 2848 | tree saved_function; |
8cd2462c | 2849 | |
92788413 MM |
2850 | /* Compute the appropriate object-file linkage for inline |
2851 | functions. */ | |
79065db2 | 2852 | if (DECL_DECLARED_INLINE_P (fn)) |
92788413 MM |
2853 | import_export_decl (fn); |
2854 | ||
4f8e1232 MM |
2855 | /* If FN is external, then there's no point in generating RTL for |
2856 | it. This situation can arise with an inline function under | |
83662e2b | 2857 | `-fexternal-templates'; we instantiate the function, even though |
4f8e1232 MM |
2858 | we're not planning on emitting it, in case we get a chance to |
2859 | inline it. */ | |
2860 | if (DECL_EXTERNAL (fn)) | |
2861 | return; | |
2862 | ||
4985cde3 | 2863 | /* ??? When is this needed? */ |
367aa585 | 2864 | saved_function = current_function_decl; |
367aa585 JM |
2865 | |
2866 | timevar_push (TV_INTEGRATION); | |
367aa585 | 2867 | optimize_function (fn); |
367aa585 | 2868 | timevar_pop (TV_INTEGRATION); |
62409b39 | 2869 | |
c1f927e8 | 2870 | tree_rest_of_compilation (fn, function_depth > 1); |
d658cd4c | 2871 | |
367aa585 | 2872 | current_function_decl = saved_function; |
ea11ca7e | 2873 | |
4985cde3 | 2874 | extract_interface_info (); |
14691f8d RH |
2875 | |
2876 | /* Emit any thunks that should be emitted at the same time as FN. */ | |
2877 | emit_associated_thunks (fn); | |
4985cde3 RH |
2878 | |
2879 | /* If this function is marked with the constructor attribute, add it | |
2880 | to the list of functions to be called along with constructors | |
2881 | from static duration objects. */ | |
2882 | if (DECL_STATIC_CONSTRUCTOR (fn)) | |
2883 | static_ctors = tree_cons (NULL_TREE, fn, static_ctors); | |
2884 | ||
2885 | /* If this function is marked with the destructor attribute, add it | |
2886 | to the list of functions to be called along with destructors from | |
2887 | static duration objects. */ | |
2888 | if (DECL_STATIC_DESTRUCTOR (fn)) | |
2889 | static_dtors = tree_cons (NULL_TREE, fn, static_dtors); | |
85b22f78 NS |
2890 | |
2891 | if (DECL_CLONED_FUNCTION_P (fn)) | |
2892 | { | |
2893 | /* If this is a clone, go through the other clones now and mark | |
2894 | their parameters used. We have to do that here, as we don't | |
2895 | know whether any particular clone will be expanded, and | |
2896 | therefore cannot pick one arbitrarily. */ | |
2897 | tree probe; | |
2898 | ||
2899 | for (probe = TREE_CHAIN (DECL_CLONED_FUNCTION (fn)); | |
2900 | probe && DECL_CLONED_FUNCTION_P (probe); | |
2901 | probe = TREE_CHAIN (probe)) | |
2902 | { | |
2903 | tree parms; | |
2904 | ||
2905 | for (parms = DECL_ARGUMENTS (probe); | |
2906 | parms; parms = TREE_CHAIN (parms)) | |
2907 | TREE_USED (parms) = 1; | |
2908 | } | |
2909 | } | |
558475f0 | 2910 | } |
54f7877c | 2911 | |
8cd2462c JH |
2912 | /* Generate RTL for FN. */ |
2913 | ||
2914 | void | |
5671bf27 | 2915 | expand_or_defer_fn (tree fn) |
8cd2462c JH |
2916 | { |
2917 | /* When the parser calls us after finishing the body of a template | |
2918 | function, we don't really want to expand the body. When we're | |
2919 | processing an in-class definition of an inline function, | |
2920 | PROCESSING_TEMPLATE_DECL will no longer be set here, so we have | |
2921 | to look at the function itself. */ | |
2922 | if (processing_template_decl | |
2923 | || (DECL_LANG_SPECIFIC (fn) | |
2924 | && DECL_TEMPLATE_INFO (fn) | |
2925 | && uses_template_parms (DECL_TI_ARGS (fn)))) | |
2926 | { | |
2927 | /* Normally, collection only occurs in rest_of_compilation. So, | |
2928 | if we don't collect here, we never collect junk generated | |
2929 | during the processing of templates until we hit a | |
2930 | non-template function. */ | |
2931 | ggc_collect (); | |
2932 | return; | |
2933 | } | |
2934 | ||
2935 | /* Replace AGGR_INIT_EXPRs with appropriate CALL_EXPRs. */ | |
2936 | walk_tree_without_duplicates (&DECL_SAVED_TREE (fn), | |
2937 | simplify_aggr_init_exprs_r, | |
2938 | NULL); | |
2939 | ||
2940 | /* If this is a constructor or destructor body, we have to clone | |
2941 | it. */ | |
2942 | if (maybe_clone_body (fn)) | |
2943 | { | |
2944 | /* We don't want to process FN again, so pretend we've written | |
2945 | it out, even though we haven't. */ | |
2946 | TREE_ASM_WRITTEN (fn) = 1; | |
2947 | return; | |
2948 | } | |
2949 | ||
2950 | /* There's no reason to do any of the work here if we're only doing | |
2951 | semantic analysis; this code just generates RTL. */ | |
2952 | if (flag_syntax_only) | |
2953 | return; | |
2954 | ||
e4d91027 RH |
2955 | /* Compute the appropriate object-file linkage for inline functions. */ |
2956 | if (DECL_DECLARED_INLINE_P (fn)) | |
2957 | import_export_decl (fn); | |
8cd2462c | 2958 | |
99edd65d RH |
2959 | function_depth++; |
2960 | ||
e4d91027 | 2961 | /* Expand or defer, at the whim of the compilation unit manager. */ |
6b00c969 | 2962 | cgraph_finalize_function (fn, function_depth > 1); |
99edd65d RH |
2963 | |
2964 | function_depth--; | |
8cd2462c JH |
2965 | } |
2966 | ||
07b2f2fd JM |
2967 | /* Helper function for walk_tree, used by finish_function to override all |
2968 | the RETURN_STMTs and pertinent CLEANUP_STMTs for the named return | |
2969 | value optimization. */ | |
0d97bf4c | 2970 | |
07b2f2fd | 2971 | tree |
3a978d72 | 2972 | nullify_returns_r (tree* tp, int* walk_subtrees, void* data) |
0d97bf4c | 2973 | { |
07b2f2fd JM |
2974 | tree nrv = (tree) data; |
2975 | ||
2976 | /* No need to walk into types. There wouldn't be any need to walk into | |
2977 | non-statements, except that we have to consider STMT_EXPRs. */ | |
0d97bf4c JM |
2978 | if (TYPE_P (*tp)) |
2979 | *walk_subtrees = 0; | |
2980 | else if (TREE_CODE (*tp) == RETURN_STMT) | |
d65b1d77 | 2981 | RETURN_STMT_EXPR (*tp) = NULL_TREE; |
07b2f2fd JM |
2982 | else if (TREE_CODE (*tp) == CLEANUP_STMT |
2983 | && CLEANUP_DECL (*tp) == nrv) | |
659e5a7a | 2984 | CLEANUP_EH_ONLY (*tp) = 1; |
0d97bf4c JM |
2985 | |
2986 | /* Keep iterating. */ | |
2987 | return NULL_TREE; | |
2988 | } | |
2989 | ||
f444e36b MM |
2990 | /* Start generating the RTL for FN. */ |
2991 | ||
4985cde3 RH |
2992 | void |
2993 | cxx_expand_function_start (void) | |
f444e36b | 2994 | { |
07b2f2fd JM |
2995 | /* Give our named return value the same RTL as our RESULT_DECL. */ |
2996 | if (current_function_return_value) | |
4985cde3 | 2997 | COPY_DECL_RTL (DECL_RESULT (cfun->decl), current_function_return_value); |
b850de4f MM |
2998 | } |
2999 | ||
54f7877c MM |
3000 | /* Perform initialization related to this module. */ |
3001 | ||
3002 | void | |
3a978d72 | 3003 | init_cp_semantics (void) |
54f7877c MM |
3004 | { |
3005 | lang_expand_stmt = cp_expand_stmt; | |
3006 | } | |
cf22909c KL |
3007 | |
3008 | #include "gt-cp-semantics.h" |