?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge from mainline
[official-gcc.git] / gcc / cp / error.c
blob8696ff9731e518980d3bc49fcc502585007236d0
1 /* Call-backs for C++ error reporting.
2 This code is non-reentrant.
3 Copyright (C) 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000, 2002,
4 2003, 2004, 2005 Free Software Foundation, Inc.
5 This file is part of GCC.
6
7 GCC is free software; you can redistribute it and/or modify
8 it under the terms of the GNU General Public License as published by
9 the Free Software Foundation; either version 2, or (at your option)
10 any later version.
11
12 GCC is distributed in the hope that it will be useful,
13 but WITHOUT ANY WARRANTY; without even the implied warranty of
14 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 GNU General Public License for more details.
16
17 You should have received a copy of the GNU General Public License
18 along with GCC; see the file COPYING. If not, write to
19 the Free Software Foundation, 51 Franklin Street, Fifth Floor,
20 Boston, MA 02110-1301, USA. */
21
22 #include "config.h"
23 #include "system.h"
24 #include "coretypes.h"
25 #include "tm.h"
26 #include "tree.h"
27 #include "cp-tree.h"
28 #include "real.h"
29 #include "toplev.h"
30 #include "flags.h"
31 #include "diagnostic.h"
32 #include "langhooks-def.h"
33 #include "cxx-pretty-print.h"
34
35 #define pp_separate_with_comma(PP) pp_cxx_separate_with (PP, ',')
36
37 /* The global buffer where we dump everything. It is there only for
38 transitional purpose. It is expected, in the near future, to be
39 completely removed. */
40 static cxx_pretty_printer scratch_pretty_printer;
41 #define cxx_pp (&scratch_pretty_printer)
42
43 # define NEXT_CODE(T) (TREE_CODE (TREE_TYPE (T)))
44
45 static const char *args_to_string (tree, int);
46 static const char *assop_to_string (enum tree_code);
47 static const char *code_to_string (enum tree_code);
48 static const char *cv_to_string (tree, int);
49 static const char *decl_to_string (tree, int);
50 static const char *expr_to_string (tree);
51 static const char *fndecl_to_string (tree, int);
52 static const char *op_to_string (enum tree_code);
53 static const char *parm_to_string (int);
54 static const char *type_to_string (tree, int);
55
56 static void dump_type (tree, int);
57 static void dump_typename (tree, int);
58 static void dump_simple_decl (tree, tree, int);
59 static void dump_decl (tree, int);
60 static void dump_template_decl (tree, int);
61 static void dump_function_decl (tree, int);
62 static void dump_expr (tree, int);
63 static void dump_unary_op (const char *, tree, int);
64 static void dump_binary_op (const char *, tree, int);
65 static void dump_aggr_type (tree, int);
66 static void dump_type_prefix (tree, int);
67 static void dump_type_suffix (tree, int);
68 static void dump_function_name (tree, int);
69 static void dump_expr_list (tree, int);
70 static void dump_global_iord (tree);
71 static void dump_parameters (tree, int);
72 static void dump_exception_spec (tree, int);
73 static void dump_template_argument (tree, int);
74 static void dump_template_argument_list (tree, int);
75 static void dump_template_parameter (tree, int);
76 static void dump_template_bindings (tree, tree);
77 static void dump_scope (tree, int);
78 static void dump_template_parms (tree, int, int);
79
80 static const char *function_category (tree);
81 static void maybe_print_instantiation_context (diagnostic_context *);
82 static void print_instantiation_full_context (diagnostic_context *);
83 static void print_instantiation_partial_context (diagnostic_context *,
84 tree, location_t);
85 static void cp_diagnostic_starter (diagnostic_context *, diagnostic_info *);
86 static void cp_diagnostic_finalizer (diagnostic_context *, diagnostic_info *);
87 static void cp_print_error_function (diagnostic_context *, diagnostic_info *);
88
89 static bool cp_printer (pretty_printer *, text_info *, const char *,
90 int, bool, bool, bool);
91 static location_t location_of (tree);
92
93 void
94 init_error (void)
95 {
96 diagnostic_starter (global_dc) = cp_diagnostic_starter;
97 diagnostic_finalizer (global_dc) = cp_diagnostic_finalizer;
98 diagnostic_format_decoder (global_dc) = cp_printer;
99
100 pp_construct (pp_base (cxx_pp), NULL, 0);
101 pp_cxx_pretty_printer_init (cxx_pp);
102 }
103
104 /* Dump a scope, if deemed necessary. */
105
106 static void
107 dump_scope (tree scope, int flags)
108 {
109 int f = ~TFF_RETURN_TYPE & (flags & (TFF_SCOPE | TFF_CHASE_TYPEDEF));
110
111 if (scope == NULL_TREE)
112 return;
113
114 if (TREE_CODE (scope) == NAMESPACE_DECL)
115 {
116 if (scope != global_namespace)
117 {
118 dump_decl (scope, f);
119 pp_cxx_colon_colon (cxx_pp);
120 }
121 }
122 else if (AGGREGATE_TYPE_P (scope))
123 {
124 dump_type (scope, f);
125 pp_cxx_colon_colon (cxx_pp);
126 }
127 else if ((flags & TFF_SCOPE) && TREE_CODE (scope) == FUNCTION_DECL)
128 {
129 dump_function_decl (scope, f);
130 pp_cxx_colon_colon (cxx_pp);
131 }
132 }
133
134 /* Dump the template ARGument under control of FLAGS. */
135
136 static void
137 dump_template_argument (tree arg, int flags)
138 {
139 if (TYPE_P (arg) || TREE_CODE (arg) == TEMPLATE_DECL)
140 dump_type (arg, flags & ~TFF_CLASS_KEY_OR_ENUM);
141 else
142 dump_expr (arg, (flags | TFF_EXPR_IN_PARENS) & ~TFF_CLASS_KEY_OR_ENUM);
143 }
144
145 /* Dump a template-argument-list ARGS (always a TREE_VEC) under control
146 of FLAGS. */
147
148 static void
149 dump_template_argument_list (tree args, int flags)
150 {
151 int n = TREE_VEC_LENGTH (args);
152 int need_comma = 0;
153 int i;
154
155 for (i = 0; i< n; ++i)
156 {
157 if (need_comma)
158 pp_separate_with_comma (cxx_pp);
159 dump_template_argument (TREE_VEC_ELT (args, i), flags);
160 need_comma = 1;
161 }
162 }
163
164 /* Dump a template parameter PARM (a TREE_LIST) under control of FLAGS. */
165
166 static void
167 dump_template_parameter (tree parm, int flags)
168 {
169 tree p = TREE_VALUE (parm);
170 tree a = TREE_PURPOSE (parm);
171
172 if (TREE_CODE (p) == TYPE_DECL)
173 {
174 if (flags & TFF_DECL_SPECIFIERS)
175 {
176 pp_cxx_identifier (cxx_pp, "class");
177 if (DECL_NAME (p))
178 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p));
179 }
180 else if (DECL_NAME (p))
181 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (p));
182 else
183 pp_cxx_canonical_template_parameter (cxx_pp, TREE_TYPE (p));
184 }
185 else
186 dump_decl (p, flags | TFF_DECL_SPECIFIERS);
187
188 if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && a != NULL_TREE)
189 {
190 pp_cxx_whitespace (cxx_pp);
191 pp_equal (cxx_pp);
192 pp_cxx_whitespace (cxx_pp);
193 if (TREE_CODE (p) == TYPE_DECL || TREE_CODE (p) == TEMPLATE_DECL)
194 dump_type (a, flags & ~TFF_CHASE_TYPEDEF);
195 else
196 dump_expr (a, flags | TFF_EXPR_IN_PARENS);
197 }
198 }
199
200 /* Dump, under control of FLAGS, a template-parameter-list binding.
201 PARMS is a TREE_LIST of TREE_VEC of TREE_LIST and ARGS is a
202 TREE_VEC. */
203
204 static void
205 dump_template_bindings (tree parms, tree args)
206 {
207 int need_comma = 0;
208
209 while (parms)
210 {
211 tree p = TREE_VALUE (parms);
212 int lvl = TMPL_PARMS_DEPTH (parms);
213 int arg_idx = 0;
214 int i;
215
216 for (i = 0; i < TREE_VEC_LENGTH (p); ++i)
217 {
218 tree arg = NULL_TREE;
219
220 /* Don't crash if we had an invalid argument list. */
221 if (TMPL_ARGS_DEPTH (args) >= lvl)
222 {
223 tree lvl_args = TMPL_ARGS_LEVEL (args, lvl);
224 if (NUM_TMPL_ARGS (lvl_args) > arg_idx)
225 arg = TREE_VEC_ELT (lvl_args, arg_idx);
226 }
227
228 if (need_comma)
229 pp_separate_with_comma (cxx_pp);
230 dump_template_parameter (TREE_VEC_ELT (p, i), TFF_PLAIN_IDENTIFIER);
231 pp_cxx_whitespace (cxx_pp);
232 pp_equal (cxx_pp);
233 pp_cxx_whitespace (cxx_pp);
234 if (arg)
235 dump_template_argument (arg, TFF_PLAIN_IDENTIFIER);
236 else
237 pp_identifier (cxx_pp, "<missing>");
238
239 ++arg_idx;
240 need_comma = 1;
241 }
242
243 parms = TREE_CHAIN (parms);
244 }
245 }
246
247 /* Dump a human-readable equivalent of TYPE. FLAGS controls the
248 format. */
249
250 static void
251 dump_type (tree t, int flags)
252 {
253 if (t == NULL_TREE)
254 return;
255
256 if (TYPE_PTRMEMFUNC_P (t))
257 goto offset_type;
258
259 switch (TREE_CODE (t))
260 {
261 case UNKNOWN_TYPE:
262 pp_identifier (cxx_pp, "<unresolved overloaded function type>");
263 break;
264
265 case TREE_LIST:
266 /* A list of function parms. */
267 dump_parameters (t, flags);
268 break;
269
270 case IDENTIFIER_NODE:
271 pp_cxx_tree_identifier (cxx_pp, t);
272 break;
273
274 case TREE_BINFO:
275 dump_type (BINFO_TYPE (t), flags);
276 break;
277
278 case RECORD_TYPE:
279 case UNION_TYPE:
280 case ENUMERAL_TYPE:
281 dump_aggr_type (t, flags);
282 break;
283
284 case TYPE_DECL:
285 if (flags & TFF_CHASE_TYPEDEF)
286 {
287 dump_type (DECL_ORIGINAL_TYPE (t)
288 ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t), flags);
289 break;
290 }
291 /* Else fall through. */
292
293 case TEMPLATE_DECL:
294 case NAMESPACE_DECL:
295 dump_decl (t, flags & ~TFF_DECL_SPECIFIERS);
296 break;
297
298 case INTEGER_TYPE:
299 case REAL_TYPE:
300 case VOID_TYPE:
301 case BOOLEAN_TYPE:
302 case COMPLEX_TYPE:
303 case VECTOR_TYPE:
304 pp_type_specifier_seq (cxx_pp, t);
305 break;
306
307 case TEMPLATE_TEMPLATE_PARM:
308 /* For parameters inside template signature. */
309 if (TYPE_IDENTIFIER (t))
310 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
311 else
312 pp_cxx_canonical_template_parameter (cxx_pp, t);
313 break;
314
315 case BOUND_TEMPLATE_TEMPLATE_PARM:
316 {
317 tree args = TYPE_TI_ARGS (t);
318 pp_cxx_cv_qualifier_seq (cxx_pp, t);
319 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
320 pp_cxx_begin_template_argument_list (cxx_pp);
321 dump_template_argument_list (args, flags);
322 pp_cxx_end_template_argument_list (cxx_pp);
323 }
324 break;
325
326 case TEMPLATE_TYPE_PARM:
327 pp_cxx_cv_qualifier_seq (cxx_pp, t);
328 if (TYPE_IDENTIFIER (t))
329 pp_cxx_tree_identifier (cxx_pp, TYPE_IDENTIFIER (t));
330 else
331 pp_cxx_canonical_template_parameter
332 (cxx_pp, TEMPLATE_TYPE_PARM_INDEX (t));
333 break;
334
335 /* This is not always necessary for pointers and such, but doing this
336 reduces code size. */
337 case ARRAY_TYPE:
338 case POINTER_TYPE:
339 case REFERENCE_TYPE:
340 case OFFSET_TYPE:
341 offset_type:
342 case FUNCTION_TYPE:
343 case METHOD_TYPE:
344 {
345 dump_type_prefix (t, flags);
346 dump_type_suffix (t, flags);
347 break;
348 }
349 case TYPENAME_TYPE:
350 pp_cxx_cv_qualifier_seq (cxx_pp, t);
351 pp_cxx_identifier (cxx_pp,
352 TYPENAME_IS_ENUM_P (t) ? "enum"
353 : TYPENAME_IS_CLASS_P (t) ? "class"
354 : "typename");
355 dump_typename (t, flags);
356 break;
357
358 case UNBOUND_CLASS_TEMPLATE:
359 dump_type (TYPE_CONTEXT (t), flags);
360 pp_cxx_colon_colon (cxx_pp);
361 pp_cxx_identifier (cxx_pp, "template");
362 dump_type (DECL_NAME (TYPE_NAME (t)), flags);
363 break;
364
365 case TYPEOF_TYPE:
366 pp_cxx_identifier (cxx_pp, "__typeof__");
367 pp_cxx_whitespace (cxx_pp);
368 pp_cxx_left_paren (cxx_pp);
369 dump_expr (TYPEOF_TYPE_EXPR (t), flags & ~TFF_EXPR_IN_PARENS);
370 pp_cxx_right_paren (cxx_pp);
371 break;
372
373 default:
374 pp_unsupported_tree (cxx_pp, t);
375 /* Fall through to error. */
376
377 case ERROR_MARK:
378 pp_identifier (cxx_pp, "<type error>");
379 break;
380 }
381 }
382
383 /* Dump a TYPENAME_TYPE. We need to notice when the context is itself
384 a TYPENAME_TYPE. */
385
386 static void
387 dump_typename (tree t, int flags)
388 {
389 tree ctx = TYPE_CONTEXT (t);
390
391 if (TREE_CODE (ctx) == TYPENAME_TYPE)
392 dump_typename (ctx, flags);
393 else
394 dump_type (ctx, flags & ~TFF_CLASS_KEY_OR_ENUM);
395 pp_cxx_colon_colon (cxx_pp);
396 dump_decl (TYPENAME_TYPE_FULLNAME (t), flags);
397 }
398
399 /* Return the name of the supplied aggregate, or enumeral type. */
400
401 const char *
402 class_key_or_enum_as_string (tree t)
403 {
404 if (TREE_CODE (t) == ENUMERAL_TYPE)
405 return "enum";
406 else if (TREE_CODE (t) == UNION_TYPE)
407 return "union";
408 else if (TYPE_LANG_SPECIFIC (t) && CLASSTYPE_DECLARED_CLASS (t))
409 return "class";
410 else
411 return "struct";
412 }
413
414 /* Print out a class declaration T under the control of FLAGS,
415 in the form `class foo'. */
416
417 static void
418 dump_aggr_type (tree t, int flags)
419 {
420 tree name;
421 const char *variety = class_key_or_enum_as_string (t);
422 int typdef = 0;
423 int tmplate = 0;
424
425 pp_cxx_cv_qualifier_seq (cxx_pp, t);
426
427 if (flags & TFF_CLASS_KEY_OR_ENUM)
428 pp_cxx_identifier (cxx_pp, variety);
429
430 if (flags & TFF_CHASE_TYPEDEF)
431 t = TYPE_MAIN_VARIANT (t);
432
433 name = TYPE_NAME (t);
434
435 if (name)
436 {
437 typdef = !DECL_ARTIFICIAL (name);
438 tmplate = !typdef && TREE_CODE (t) != ENUMERAL_TYPE
439 && TYPE_LANG_SPECIFIC (t) && CLASSTYPE_TEMPLATE_INFO (t)
440 && (TREE_CODE (CLASSTYPE_TI_TEMPLATE (t)) != TEMPLATE_DECL
441 || PRIMARY_TEMPLATE_P (CLASSTYPE_TI_TEMPLATE (t)));
442 dump_scope (CP_DECL_CONTEXT (name), flags | TFF_SCOPE);
443 if (tmplate)
444 {
445 /* Because the template names are mangled, we have to locate
446 the most general template, and use that name. */
447 tree tpl = CLASSTYPE_TI_TEMPLATE (t);
448
449 while (DECL_TEMPLATE_INFO (tpl))
450 tpl = DECL_TI_TEMPLATE (tpl);
451 name = tpl;
452 }
453 name = DECL_NAME (name);
454 }
455
456 if (name == 0 || ANON_AGGRNAME_P (name))
457 {
458 if (flags & TFF_CLASS_KEY_OR_ENUM)
459 pp_identifier (cxx_pp, "<anonymous>");
460 else
461 pp_printf (pp_base (cxx_pp), "<anonymous %s>", variety);
462 }
463 else
464 pp_cxx_tree_identifier (cxx_pp, name);
465 if (tmplate)
466 dump_template_parms (TYPE_TEMPLATE_INFO (t),
467 !CLASSTYPE_USE_TEMPLATE (t),
468 flags & ~TFF_TEMPLATE_HEADER);
469 }
470
471 /* Dump into the obstack the initial part of the output for a given type.
472 This is necessary when dealing with things like functions returning
473 functions. Examples:
474
475 return type of `int (* fee ())()': pointer -> function -> int. Both
476 pointer (and reference and offset) and function (and member) types must
477 deal with prefix and suffix.
478
479 Arrays must also do this for DECL nodes, like int a[], and for things like
480 int *[]&. */
481
482 static void
483 dump_type_prefix (tree t, int flags)
484 {
485 if (TYPE_PTRMEMFUNC_P (t))
486 {
487 t = TYPE_PTRMEMFUNC_FN_TYPE (t);
488 goto offset_type;
489 }
490
491 switch (TREE_CODE (t))
492 {
493 case POINTER_TYPE:
494 case REFERENCE_TYPE:
495 {
496 tree sub = TREE_TYPE (t);
497
498 dump_type_prefix (sub, flags);
499 if (TREE_CODE (sub) == ARRAY_TYPE)
500 {
501 pp_cxx_whitespace (cxx_pp);
502 pp_cxx_left_paren (cxx_pp);
503 }
504 pp_character (cxx_pp, "&*"[TREE_CODE (t) == POINTER_TYPE]);
505 pp_base (cxx_pp)->padding = pp_before;
506 pp_cxx_cv_qualifier_seq (cxx_pp, t);
507 }
508 break;
509
510 case OFFSET_TYPE:
511 offset_type:
512 dump_type_prefix (TREE_TYPE (t), flags);
513 if (TREE_CODE (t) == OFFSET_TYPE) /* pmfs deal with this in d_t_p */
514 {
515 pp_maybe_space (cxx_pp);
516 if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
517 pp_cxx_left_paren (cxx_pp);
518 dump_type (TYPE_OFFSET_BASETYPE (t), flags);
519 pp_cxx_colon_colon (cxx_pp);
520 }
521 pp_cxx_star (cxx_pp);
522 pp_cxx_cv_qualifier_seq (cxx_pp, t);
523 pp_base (cxx_pp)->padding = pp_before;
524 break;
525
526 /* Can only be reached through function pointer -- this would not be
527 correct if FUNCTION_DECLs used it. */
528 case FUNCTION_TYPE:
529 dump_type_prefix (TREE_TYPE (t), flags);
530 pp_maybe_space (cxx_pp);
531 pp_cxx_left_paren (cxx_pp);
532 break;
533
534 case METHOD_TYPE:
535 dump_type_prefix (TREE_TYPE (t), flags);
536 pp_maybe_space (cxx_pp);
537 pp_cxx_left_paren (cxx_pp);
538 dump_aggr_type (TYPE_METHOD_BASETYPE (t), flags);
539 pp_cxx_colon_colon (cxx_pp);
540 break;
541
542 case ARRAY_TYPE:
543 dump_type_prefix (TREE_TYPE (t), flags);
544 break;
545
546 case ENUMERAL_TYPE:
547 case IDENTIFIER_NODE:
548 case INTEGER_TYPE:
549 case BOOLEAN_TYPE:
550 case REAL_TYPE:
551 case RECORD_TYPE:
552 case TEMPLATE_TYPE_PARM:
553 case TEMPLATE_TEMPLATE_PARM:
554 case BOUND_TEMPLATE_TEMPLATE_PARM:
555 case TREE_LIST:
556 case TYPE_DECL:
557 case TREE_VEC:
558 case UNION_TYPE:
559 case UNKNOWN_TYPE:
560 case VOID_TYPE:
561 case TYPENAME_TYPE:
562 case COMPLEX_TYPE:
563 case VECTOR_TYPE:
564 case TYPEOF_TYPE:
565 dump_type (t, flags);
566 pp_base (cxx_pp)->padding = pp_before;
567 break;
568
569 default:
570 pp_unsupported_tree (cxx_pp, t);
571 /* fall through. */
572 case ERROR_MARK:
573 pp_identifier (cxx_pp, "<typeprefixerror>");
574 break;
575 }
576 }
577
578 /* Dump the suffix of type T, under control of FLAGS. This is the part
579 which appears after the identifier (or function parms). */
580
581 static void
582 dump_type_suffix (tree t, int flags)
583 {
584 if (TYPE_PTRMEMFUNC_P (t))
585 t = TYPE_PTRMEMFUNC_FN_TYPE (t);
586
587 switch (TREE_CODE (t))
588 {
589 case POINTER_TYPE:
590 case REFERENCE_TYPE:
591 case OFFSET_TYPE:
592 if (TREE_CODE (TREE_TYPE (t)) == ARRAY_TYPE)
593 pp_cxx_right_paren (cxx_pp);
594 dump_type_suffix (TREE_TYPE (t), flags);
595 break;
596
597 /* Can only be reached through function pointer. */
598 case FUNCTION_TYPE:
599 case METHOD_TYPE:
600 {
601 tree arg;
602 pp_cxx_right_paren (cxx_pp);
603 arg = TYPE_ARG_TYPES (t);
604 if (TREE_CODE (t) == METHOD_TYPE)
605 arg = TREE_CHAIN (arg);
606
607 /* Function pointers don't have default args. Not in standard C++,
608 anyway; they may in g++, but we'll just pretend otherwise. */
609 dump_parameters (arg, flags & ~TFF_FUNCTION_DEFAULT_ARGUMENTS);
610
611 if (TREE_CODE (t) == METHOD_TYPE)
612 pp_cxx_cv_qualifier_seq
613 (cxx_pp, TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (t))));
614 else
615 pp_cxx_cv_qualifier_seq(cxx_pp, t);
616 dump_exception_spec (TYPE_RAISES_EXCEPTIONS (t), flags);
617 dump_type_suffix (TREE_TYPE (t), flags);
618 break;
619 }
620
621 case ARRAY_TYPE:
622 pp_maybe_space (cxx_pp);
623 pp_cxx_left_bracket (cxx_pp);
624 if (TYPE_DOMAIN (t))
625 {
626 if (host_integerp (TYPE_MAX_VALUE (TYPE_DOMAIN (t)), 0))
627 pp_wide_integer
628 (cxx_pp, tree_low_cst (TYPE_MAX_VALUE (TYPE_DOMAIN (t)), 0) + 1);
629 else if (TREE_CODE (TYPE_MAX_VALUE (TYPE_DOMAIN (t))) == MINUS_EXPR)
630 dump_expr (TREE_OPERAND (TYPE_MAX_VALUE (TYPE_DOMAIN (t)), 0),
631 flags & ~TFF_EXPR_IN_PARENS);
632 else
633 dump_expr (fold (cp_build_binary_op
634 (PLUS_EXPR, TYPE_MAX_VALUE (TYPE_DOMAIN (t)),
635 integer_one_node)),
636 flags & ~TFF_EXPR_IN_PARENS);
637 }
638 pp_cxx_right_bracket (cxx_pp);
639 dump_type_suffix (TREE_TYPE (t), flags);
640 break;
641
642 case ENUMERAL_TYPE:
643 case IDENTIFIER_NODE:
644 case INTEGER_TYPE:
645 case BOOLEAN_TYPE:
646 case REAL_TYPE:
647 case RECORD_TYPE:
648 case TEMPLATE_TYPE_PARM:
649 case TEMPLATE_TEMPLATE_PARM:
650 case BOUND_TEMPLATE_TEMPLATE_PARM:
651 case TREE_LIST:
652 case TYPE_DECL:
653 case TREE_VEC:
654 case UNION_TYPE:
655 case UNKNOWN_TYPE:
656 case VOID_TYPE:
657 case TYPENAME_TYPE:
658 case COMPLEX_TYPE:
659 case VECTOR_TYPE:
660 case TYPEOF_TYPE:
661 break;
662
663 default:
664 pp_unsupported_tree (cxx_pp, t);
665 case ERROR_MARK:
666 /* Don't mark it here, we should have already done in
667 dump_type_prefix. */
668 break;
669 }
670 }
671
672 static void
673 dump_global_iord (tree t)
674 {
675 const char *p = NULL;
676
677 if (DECL_GLOBAL_CTOR_P (t))
678 p = "initializers";
679 else if (DECL_GLOBAL_DTOR_P (t))
680 p = "destructors";
681 else
682 gcc_unreachable ();
683
684 pp_printf (pp_base (cxx_pp), "(static %s for %s)", p, input_filename);
685 }
686
687 static void
688 dump_simple_decl (tree t, tree type, int flags)
689 {
690 if (flags & TFF_DECL_SPECIFIERS)
691 {
692 dump_type_prefix (type, flags);
693 pp_maybe_space (cxx_pp);
694 }
695 if (!DECL_INITIAL (t) || TREE_CODE (DECL_INITIAL (t)) != TEMPLATE_PARM_INDEX)
696 dump_scope (CP_DECL_CONTEXT (t), flags);
697 if (DECL_NAME (t))
698 dump_decl (DECL_NAME (t), flags);
699 else
700 pp_identifier (cxx_pp, "<anonymous>");
701 if (flags & TFF_DECL_SPECIFIERS)
702 dump_type_suffix (type, flags);
703 }
704
705 /* Dump a human readable string for the decl T under control of FLAGS. */
706
707 static void
708 dump_decl (tree t, int flags)
709 {
710 if (t == NULL_TREE)
711 return;
712
713 switch (TREE_CODE (t))
714 {
715 case TYPE_DECL:
716 /* Don't say 'typedef class A' */
717 if (DECL_ARTIFICIAL (t))
718 {
719 if ((flags & TFF_DECL_SPECIFIERS)
720 && TREE_CODE (TREE_TYPE (t)) == TEMPLATE_TYPE_PARM)
721 /* Say `class T' not just `T'. */
722 pp_cxx_identifier (cxx_pp, "class");
723
724 dump_type (TREE_TYPE (t), flags);
725 break;
726 }
727 if (flags & TFF_DECL_SPECIFIERS)
728 pp_cxx_identifier (cxx_pp, "typedef");
729 dump_simple_decl (t, DECL_ORIGINAL_TYPE (t)
730 ? DECL_ORIGINAL_TYPE (t) : TREE_TYPE (t),
731 flags);
732 break;
733
734 case VAR_DECL:
735 if (DECL_NAME (t) && VTABLE_NAME_P (DECL_NAME (t)))
736 {
737 pp_string (cxx_pp, "vtable for ");
738 gcc_assert (TYPE_P (DECL_CONTEXT (t)));
739 dump_type (DECL_CONTEXT (t), flags);
740 break;
741 }
742 /* Else fall through. */
743 case FIELD_DECL:
744 case PARM_DECL:
745 dump_simple_decl (t, TREE_TYPE (t), flags);
746 break;
747
748 case RESULT_DECL:
749 pp_string (cxx_pp, "<return value> ");
750 dump_simple_decl (t, TREE_TYPE (t), flags);
751 break;
752
753 case NAMESPACE_DECL:
754 if (flags & TFF_DECL_SPECIFIERS)
755 pp_cxx_declaration (cxx_pp, t);
756 else
757 {
758 dump_scope (CP_DECL_CONTEXT (t), flags);
759 if (DECL_NAME (t) == NULL_TREE)
760 pp_identifier (cxx_pp, "<unnamed>");
761 else
762 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (t));
763 }
764 break;
765
766 case SCOPE_REF:
767 pp_expression (cxx_pp, t);
768 break;
769
770 case ARRAY_REF:
771 dump_decl (TREE_OPERAND (t, 0), flags);
772 pp_cxx_left_bracket (cxx_pp);
773 dump_decl (TREE_OPERAND (t, 1), flags);
774 pp_cxx_right_bracket (cxx_pp);
775 break;
776
777 /* So that we can do dump_decl on an aggr type. */
778 case RECORD_TYPE:
779 case UNION_TYPE:
780 case ENUMERAL_TYPE:
781 dump_type (t, flags);
782 break;
783
784 case BIT_NOT_EXPR:
785 /* This is a pseudo destructor call which has not been folded into
786 a PSEUDO_DTOR_EXPR yet. */
787 pp_cxx_complement (cxx_pp);
788 dump_type (TREE_OPERAND (t, 0), flags);
789 break;
790
791 case TYPE_EXPR:
792 gcc_unreachable ();
793 break;
794
795 /* These special cases are duplicated here so that other functions
796 can feed identifiers to error and get them demangled properly. */
797 case IDENTIFIER_NODE:
798 if (IDENTIFIER_TYPENAME_P (t))
799 {
800 pp_cxx_identifier (cxx_pp, "operator");
801 /* Not exactly IDENTIFIER_TYPE_VALUE. */
802 dump_type (TREE_TYPE (t), flags);
803 break;
804 }
805 else
806 pp_cxx_tree_identifier (cxx_pp, t);
807 break;
808
809 case OVERLOAD:
810 if (OVL_CHAIN (t))
811 {
812 t = OVL_CURRENT (t);
813 if (DECL_CLASS_SCOPE_P (t))
814 {
815 dump_type (DECL_CONTEXT (t), flags);
816 pp_cxx_colon_colon (cxx_pp);
817 }
818 else if (DECL_CONTEXT (t))
819 {
820 dump_decl (DECL_CONTEXT (t), flags);
821 pp_cxx_colon_colon (cxx_pp);
822 }
823 dump_decl (DECL_NAME (t), flags);
824 break;
825 }
826
827 /* If there's only one function, just treat it like an ordinary
828 FUNCTION_DECL. */
829 t = OVL_CURRENT (t);
830 /* Fall through. */
831
832 case FUNCTION_DECL:
833 if (! DECL_LANG_SPECIFIC (t))
834 pp_identifier (cxx_pp, "<built-in>");
835 else if (DECL_GLOBAL_CTOR_P (t) || DECL_GLOBAL_DTOR_P (t))
836 dump_global_iord (t);
837 else
838 dump_function_decl (t, flags);
839 break;
840
841 case TEMPLATE_DECL:
842 dump_template_decl (t, flags);
843 break;
844
845 case TEMPLATE_ID_EXPR:
846 {
847 tree name = TREE_OPERAND (t, 0);
848
849 if (is_overloaded_fn (name))
850 name = DECL_NAME (get_first_fn (name));
851 dump_decl (name, flags);
852 pp_cxx_begin_template_argument_list (cxx_pp);
853 if (TREE_OPERAND (t, 1))
854 dump_template_argument_list (TREE_OPERAND (t, 1), flags);
855 pp_cxx_end_template_argument_list (cxx_pp);
856 }
857 break;
858
859 case LABEL_DECL:
860 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (t));
861 break;
862
863 case CONST_DECL:
864 if ((TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == ENUMERAL_TYPE)
865 || (DECL_INITIAL (t) &&
866 TREE_CODE (DECL_INITIAL (t)) == TEMPLATE_PARM_INDEX))
867 dump_simple_decl (t, TREE_TYPE (t), flags);
868 else if (DECL_NAME (t))
869 dump_decl (DECL_NAME (t), flags);
870 else if (DECL_INITIAL (t))
871 dump_expr (DECL_INITIAL (t), flags | TFF_EXPR_IN_PARENS);
872 else
873 pp_identifier (cxx_pp, "<enumerator>");
874 break;
875
876 case USING_DECL:
877 pp_cxx_identifier (cxx_pp, "using");
878 dump_type (USING_DECL_SCOPE (t), flags);
879 pp_cxx_colon_colon (cxx_pp);
880 dump_decl (DECL_NAME (t), flags);
881 break;
882
883 case BASELINK:
884 dump_decl (BASELINK_FUNCTIONS (t), flags);
885 break;
886
887 case NON_DEPENDENT_EXPR:
888 dump_expr (t, flags);
889 break;
890
891 case TEMPLATE_TYPE_PARM:
892 if (flags & TFF_DECL_SPECIFIERS)
893 pp_cxx_declaration (cxx_pp, t);
894 else
895 pp_type_id (cxx_pp, t);
896 break;
897
898 default:
899 pp_unsupported_tree (cxx_pp, t);
900 /* Fall through to error. */
901
902 case ERROR_MARK:
903 pp_identifier (cxx_pp, "<declaration error>");
904 break;
905 }
906 }
907
908 /* Dump a template declaration T under control of FLAGS. This means the
909 'template <...> leaders plus the 'class X' or 'void fn(...)' part. */
910
911 static void
912 dump_template_decl (tree t, int flags)
913 {
914 tree orig_parms = DECL_TEMPLATE_PARMS (t);
915 tree parms;
916 int i;
917
918 if (flags & TFF_TEMPLATE_HEADER)
919 {
920 for (parms = orig_parms = nreverse (orig_parms);
921 parms;
922 parms = TREE_CHAIN (parms))
923 {
924 tree inner_parms = INNERMOST_TEMPLATE_PARMS (parms);
925 int len = TREE_VEC_LENGTH (inner_parms);
926
927 pp_cxx_identifier (cxx_pp, "template");
928 pp_cxx_begin_template_argument_list (cxx_pp);
929
930 /* If we've shown the template prefix, we'd better show the
931 parameters' and decl's type too. */
932 flags |= TFF_DECL_SPECIFIERS;
933
934 for (i = 0; i < len; i++)
935 {
936 if (i)
937 pp_separate_with_comma (cxx_pp);
938 dump_template_parameter (TREE_VEC_ELT (inner_parms, i), flags);
939 }
940 pp_cxx_end_template_argument_list (cxx_pp);
941 pp_cxx_whitespace (cxx_pp);
942 }
943 nreverse(orig_parms);
944
945 if (DECL_TEMPLATE_TEMPLATE_PARM_P (t))
946 /* Say `template<arg> class TT' not just `template<arg> TT'. */
947 pp_cxx_identifier (cxx_pp, "class");
948 }
949
950 if (TREE_CODE (DECL_TEMPLATE_RESULT (t)) == TYPE_DECL)
951 dump_type (TREE_TYPE (t),
952 ((flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME
953 | (flags & TFF_DECL_SPECIFIERS ? TFF_CLASS_KEY_OR_ENUM : 0)));
954 else if (TREE_CODE (DECL_TEMPLATE_RESULT (t)) == VAR_DECL)
955 dump_decl (DECL_TEMPLATE_RESULT (t), flags | TFF_TEMPLATE_NAME);
956 else
957 {
958 gcc_assert (TREE_TYPE (t));
959 switch (NEXT_CODE (t))
960 {
961 case METHOD_TYPE:
962 case FUNCTION_TYPE:
963 dump_function_decl (t, flags | TFF_TEMPLATE_NAME);
964 break;
965 default:
966 /* This case can occur with some invalid code. */
967 dump_type (TREE_TYPE (t),
968 (flags & ~TFF_CLASS_KEY_OR_ENUM) | TFF_TEMPLATE_NAME
969 | (flags & TFF_DECL_SPECIFIERS
970 ? TFF_CLASS_KEY_OR_ENUM : 0));
971 }
972 }
973 }
974
975 /* Pretty print a function decl. There are several ways we want to print a
976 function declaration. The TFF_ bits in FLAGS tells us how to behave.
977 As error can only apply the '#' flag once to give 0 and 1 for V, there
978 is %D which doesn't print the throw specs, and %F which does. */
979
980 static void
981 dump_function_decl (tree t, int flags)
982 {
983 tree fntype;
984 tree parmtypes;
985 tree cname = NULL_TREE;
986 tree template_args = NULL_TREE;
987 tree template_parms = NULL_TREE;
988 int show_return = flags & TFF_RETURN_TYPE || flags & TFF_DECL_SPECIFIERS;
989
990 if (TREE_CODE (t) == TEMPLATE_DECL)
991 t = DECL_TEMPLATE_RESULT (t);
992
993 /* Pretty print template instantiations only. */
994 if (DECL_USE_TEMPLATE (t) && DECL_TEMPLATE_INFO (t))
995 {
996 tree tmpl;
997
998 template_args = DECL_TI_ARGS (t);
999 tmpl = most_general_template (t);
1000 if (tmpl && TREE_CODE (tmpl) == TEMPLATE_DECL)
1001 {
1002 template_parms = DECL_TEMPLATE_PARMS (tmpl);
1003 t = tmpl;
1004 }
1005 }
1006
1007 fntype = TREE_TYPE (t);
1008 parmtypes = FUNCTION_FIRST_USER_PARMTYPE (t);
1009
1010 if (DECL_CLASS_SCOPE_P (t))
1011 cname = DECL_CONTEXT (t);
1012 /* This is for partially instantiated template methods. */
1013 else if (TREE_CODE (fntype) == METHOD_TYPE)
1014 cname = TREE_TYPE (TREE_VALUE (parmtypes));
1015
1016 if (!(flags & TFF_DECL_SPECIFIERS))
1017 /* OK */;
1018 else if (DECL_STATIC_FUNCTION_P (t))
1019 pp_cxx_identifier (cxx_pp, "static");
1020 else if (DECL_VIRTUAL_P (t))
1021 pp_cxx_identifier (cxx_pp, "virtual");
1022
1023 /* Print the return type? */
1024 if (show_return)
1025 show_return = !DECL_CONV_FN_P (t) && !DECL_CONSTRUCTOR_P (t)
1026 && !DECL_DESTRUCTOR_P (t);
1027 if (show_return)
1028 dump_type_prefix (TREE_TYPE (fntype), flags);
1029
1030 /* Print the function name. */
1031 if (cname)
1032 {
1033 dump_type (cname, flags);
1034 pp_cxx_colon_colon (cxx_pp);
1035 }
1036 else
1037 dump_scope (CP_DECL_CONTEXT (t), flags);
1038
1039 dump_function_name (t, flags);
1040
1041 if (!(flags & TFF_NO_FUNCTION_ARGUMENTS))
1042 {
1043 dump_parameters (parmtypes, flags);
1044
1045 if (TREE_CODE (fntype) == METHOD_TYPE)
1046 {
1047 pp_base (cxx_pp)->padding = pp_before;
1048 pp_cxx_cv_qualifier_seq
1049 (cxx_pp, TREE_TYPE (TREE_VALUE (TYPE_ARG_TYPES (fntype))));
1050 }
1051
1052 if (flags & TFF_EXCEPTION_SPECIFICATION)
1053 {
1054 pp_base (cxx_pp)->padding = pp_before;
1055 dump_exception_spec (TYPE_RAISES_EXCEPTIONS (fntype), flags);
1056 }
1057
1058 if (show_return)
1059 dump_type_suffix (TREE_TYPE (fntype), flags);
1060 }
1061
1062 /* If T is a template instantiation, dump the parameter binding. */
1063 if (template_parms != NULL_TREE && template_args != NULL_TREE)
1064 {
1065 pp_cxx_whitespace (cxx_pp);
1066 pp_cxx_left_bracket (cxx_pp);
1067 pp_cxx_identifier (cxx_pp, "with");
1068 pp_cxx_whitespace (cxx_pp);
1069 dump_template_bindings (template_parms, template_args);
1070 pp_cxx_right_bracket (cxx_pp);
1071 }
1072 }
1073
1074 /* Print a parameter list. If this is for a member function, the
1075 member object ptr (and any other hidden args) should have
1076 already been removed. */
1077
1078 static void
1079 dump_parameters (tree parmtypes, int flags)
1080 {
1081 int first;
1082
1083 pp_cxx_left_paren (cxx_pp);
1084
1085 for (first = 1; parmtypes != void_list_node;
1086 parmtypes = TREE_CHAIN (parmtypes))
1087 {
1088 if (!first)
1089 pp_separate_with_comma (cxx_pp);
1090 first = 0;
1091 if (!parmtypes)
1092 {
1093 pp_cxx_identifier (cxx_pp, "...");
1094 break;
1095 }
1096 dump_type (TREE_VALUE (parmtypes), flags);
1097
1098 if ((flags & TFF_FUNCTION_DEFAULT_ARGUMENTS) && TREE_PURPOSE (parmtypes))
1099 {
1100 pp_cxx_whitespace (cxx_pp);
1101 pp_equal (cxx_pp);
1102 pp_cxx_whitespace (cxx_pp);
1103 dump_expr (TREE_PURPOSE (parmtypes), flags | TFF_EXPR_IN_PARENS);
1104 }
1105 }
1106
1107 pp_cxx_right_paren (cxx_pp);
1108 }
1109
1110 /* Print an exception specification. T is the exception specification. */
1111
1112 static void
1113 dump_exception_spec (tree t, int flags)
1114 {
1115 if (t)
1116 {
1117 pp_cxx_identifier (cxx_pp, "throw");
1118 pp_cxx_whitespace (cxx_pp);
1119 pp_cxx_left_paren (cxx_pp);
1120 if (TREE_VALUE (t) != NULL_TREE)
1121 while (1)
1122 {
1123 dump_type (TREE_VALUE (t), flags);
1124 t = TREE_CHAIN (t);
1125 if (!t)
1126 break;
1127 pp_separate_with_comma (cxx_pp);
1128 }
1129 pp_cxx_right_paren (cxx_pp);
1130 }
1131 }
1132
1133 /* Handle the function name for a FUNCTION_DECL node, grokking operators
1134 and destructors properly. */
1135
1136 static void
1137 dump_function_name (tree t, int flags)
1138 {
1139 tree name = DECL_NAME (t);
1140
1141 /* We can get here with a decl that was synthesized by language-
1142 independent machinery (e.g. coverage.c) in which case it won't
1143 have a lang_specific structure attached and DECL_CONSTRUCTOR_P
1144 will crash. In this case it is safe just to print out the
1145 literal name. */
1146 if (!DECL_LANG_SPECIFIC (t))
1147 {
1148 pp_cxx_tree_identifier (cxx_pp, name);
1149 return;
1150 }
1151
1152 if (TREE_CODE (t) == TEMPLATE_DECL)
1153 t = DECL_TEMPLATE_RESULT (t);
1154
1155 /* Don't let the user see __comp_ctor et al. */
1156 if (DECL_CONSTRUCTOR_P (t)
1157 || DECL_DESTRUCTOR_P (t))
1158 name = constructor_name (DECL_CONTEXT (t));
1159
1160 if (DECL_DESTRUCTOR_P (t))
1161 {
1162 pp_cxx_complement (cxx_pp);
1163 dump_decl (name, TFF_PLAIN_IDENTIFIER);
1164 }
1165 else if (DECL_CONV_FN_P (t))
1166 {
1167 /* This cannot use the hack that the operator's return
1168 type is stashed off of its name because it may be
1169 used for error reporting. In the case of conflicting
1170 declarations, both will have the same name, yet
1171 the types will be different, hence the TREE_TYPE field
1172 of the first name will be clobbered by the second. */
1173 pp_cxx_identifier (cxx_pp, "operator");
1174 dump_type (TREE_TYPE (TREE_TYPE (t)), flags);
1175 }
1176 else if (IDENTIFIER_OPNAME_P (name))
1177 pp_cxx_tree_identifier (cxx_pp, name);
1178 else
1179 dump_decl (name, flags);
1180
1181 if (DECL_TEMPLATE_INFO (t)
1182 && !DECL_FRIEND_PSEUDO_TEMPLATE_INSTANTIATION (t)
1183 && (TREE_CODE (DECL_TI_TEMPLATE (t)) != TEMPLATE_DECL
1184 || PRIMARY_TEMPLATE_P (DECL_TI_TEMPLATE (t))))
1185 dump_template_parms (DECL_TEMPLATE_INFO (t), !DECL_USE_TEMPLATE (t), flags);
1186 }
1187
1188 /* Dump the template parameters from the template info INFO under control of
1189 FLAGS. PRIMARY indicates whether this is a primary template decl, or
1190 specialization (partial or complete). For partial specializations we show
1191 the specialized parameter values. For a primary template we show no
1192 decoration. */
1193
1194 static void
1195 dump_template_parms (tree info, int primary, int flags)
1196 {
1197 tree args = info ? TI_ARGS (info) : NULL_TREE;
1198
1199 if (primary && flags & TFF_TEMPLATE_NAME)
1200 return;
1201 flags &= ~(TFF_CLASS_KEY_OR_ENUM | TFF_TEMPLATE_NAME);
1202 pp_cxx_begin_template_argument_list (cxx_pp);
1203
1204 /* Be careful only to print things when we have them, so as not
1205 to crash producing error messages. */
1206 if (args && !primary)
1207 {
1208 int len, ix;
1209
1210 if (TMPL_ARGS_HAVE_MULTIPLE_LEVELS (args))
1211 args = TREE_VEC_ELT (args, TREE_VEC_LENGTH (args) - 1);
1212
1213 len = TREE_VEC_LENGTH (args);
1214
1215 for (ix = 0; ix != len; ix++)
1216 {
1217 tree arg = TREE_VEC_ELT (args, ix);
1218
1219 if (ix)
1220 pp_separate_with_comma (cxx_pp);
1221
1222 if (!arg)
1223 pp_identifier (cxx_pp, "<template parameter error>");
1224 else
1225 dump_template_argument (arg, flags);
1226 }
1227 }
1228 else if (primary)
1229 {
1230 tree tpl = TI_TEMPLATE (info);
1231 tree parms = DECL_TEMPLATE_PARMS (tpl);
1232 int len, ix;
1233
1234 parms = TREE_CODE (parms) == TREE_LIST ? TREE_VALUE (parms) : NULL_TREE;
1235 len = parms ? TREE_VEC_LENGTH (parms) : 0;
1236
1237 for (ix = 0; ix != len; ix++)
1238 {
1239 tree parm = TREE_VALUE (TREE_VEC_ELT (parms, ix));
1240
1241 if (ix)
1242 pp_separate_with_comma (cxx_pp);
1243
1244 dump_decl (parm, flags & ~TFF_DECL_SPECIFIERS);
1245 }
1246 }
1247 pp_cxx_end_template_argument_list (cxx_pp);
1248 }
1249
1250 /* Print out a list of initializers (subr of dump_expr). */
1251
1252 static void
1253 dump_expr_list (tree l, int flags)
1254 {
1255 while (l)
1256 {
1257 dump_expr (TREE_VALUE (l), flags | TFF_EXPR_IN_PARENS);
1258 l = TREE_CHAIN (l);
1259 if (l)
1260 pp_separate_with_comma (cxx_pp);
1261 }
1262 }
1263
1264 /* Print out a vector of initializers (subr of dump_expr). */
1265
1266 static void
1267 dump_expr_init_vec (VEC(constructor_elt,gc) *v, int flags)
1268 {
1269 unsigned HOST_WIDE_INT idx;
1270 tree value;
1271
1272 FOR_EACH_CONSTRUCTOR_VALUE (v, idx, value)
1273 {
1274 dump_expr (value, flags | TFF_EXPR_IN_PARENS);
1275 if (idx != VEC_length (constructor_elt, v) - 1)
1276 pp_separate_with_comma (cxx_pp);
1277 }
1278 }
1279
1280
1281 /* We've gotten an indirect REFERENCE (an OBJ_TYPE_REF) to a virtual
1282 function. Resolve it to a close relative -- in the sense of static
1283 type -- variant being overridden. That is close to what was written in
1284 the source code. Subroutine of dump_expr. */
1285
1286 static tree
1287 resolve_virtual_fun_from_obj_type_ref (tree ref)
1288 {
1289 tree obj_type = TREE_TYPE (OBJ_TYPE_REF_OBJECT (ref));
1290 int index = tree_low_cst (OBJ_TYPE_REF_TOKEN (ref), 1);
1291 tree fun = BINFO_VIRTUALS (TYPE_BINFO (TREE_TYPE (obj_type)));
1292 while (index--)
1293 fun = TREE_CHAIN (fun);
1294
1295 return BV_FN (fun);
1296 }
1297
1298 /* Print out an expression E under control of FLAGS. */
1299
1300 static void
1301 dump_expr (tree t, int flags)
1302 {
1303 if (t == 0)
1304 return;
1305
1306 switch (TREE_CODE (t))
1307 {
1308 case VAR_DECL:
1309 case PARM_DECL:
1310 case FIELD_DECL:
1311 case CONST_DECL:
1312 case FUNCTION_DECL:
1313 case TEMPLATE_DECL:
1314 case NAMESPACE_DECL:
1315 case LABEL_DECL:
1316 case OVERLOAD:
1317 case IDENTIFIER_NODE:
1318 dump_decl (t, (flags & ~TFF_DECL_SPECIFIERS) | TFF_NO_FUNCTION_ARGUMENTS);
1319 break;
1320
1321 case INTEGER_CST:
1322 case REAL_CST:
1323 case STRING_CST:
1324 pp_constant (cxx_pp, t);
1325 break;
1326
1327 case THROW_EXPR:
1328 pp_cxx_identifier (cxx_pp, "throw");
1329 dump_expr (TREE_OPERAND (t, 0), flags);
1330 break;
1331
1332 case PTRMEM_CST:
1333 pp_ampersand (cxx_pp);
1334 dump_type (PTRMEM_CST_CLASS (t), flags);
1335 pp_cxx_colon_colon (cxx_pp);
1336 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (PTRMEM_CST_MEMBER (t)));
1337 break;
1338
1339 case COMPOUND_EXPR:
1340 pp_cxx_left_paren (cxx_pp);
1341 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1342 pp_separate_with_comma (cxx_pp);
1343 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1344 pp_cxx_right_paren (cxx_pp);
1345 break;
1346
1347 case COND_EXPR:
1348 pp_cxx_left_paren (cxx_pp);
1349 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1350 pp_string (cxx_pp, " ? ");
1351 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1352 pp_string (cxx_pp, " : ");
1353 dump_expr (TREE_OPERAND (t, 2), flags | TFF_EXPR_IN_PARENS);
1354 pp_cxx_right_paren (cxx_pp);
1355 break;
1356
1357 case SAVE_EXPR:
1358 if (TREE_HAS_CONSTRUCTOR (t))
1359 {
1360 pp_cxx_identifier (cxx_pp, "new");
1361 pp_cxx_whitespace (cxx_pp);
1362 dump_type (TREE_TYPE (TREE_TYPE (t)), flags);
1363 }
1364 else
1365 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1366 break;
1367
1368 case AGGR_INIT_EXPR:
1369 {
1370 tree fn = NULL_TREE;
1371
1372 if (TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR)
1373 fn = TREE_OPERAND (TREE_OPERAND (t, 0), 0);
1374
1375 if (fn && TREE_CODE (fn) == FUNCTION_DECL)
1376 {
1377 if (DECL_CONSTRUCTOR_P (fn))
1378 dump_type (DECL_CONTEXT (fn), flags);
1379 else
1380 dump_decl (fn, 0);
1381 }
1382 else
1383 dump_expr (TREE_OPERAND (t, 0), 0);
1384 }
1385 pp_cxx_left_paren (cxx_pp);
1386 if (TREE_OPERAND (t, 1))
1387 dump_expr_list (TREE_CHAIN (TREE_OPERAND (t, 1)), flags);
1388 pp_cxx_right_paren (cxx_pp);
1389 break;
1390
1391 case CALL_EXPR:
1392 {
1393 tree fn = TREE_OPERAND (t, 0);
1394 tree args = TREE_OPERAND (t, 1);
1395
1396 if (TREE_CODE (fn) == ADDR_EXPR)
1397 fn = TREE_OPERAND (fn, 0);
1398
1399 /* Nobody is interested in seeing the guts of vcalls. */
1400 if (TREE_CODE (fn) == OBJ_TYPE_REF)
1401 fn = resolve_virtual_fun_from_obj_type_ref (fn);
1402
1403 if (TREE_TYPE (fn) != NULL_TREE && NEXT_CODE (fn) == METHOD_TYPE)
1404 {
1405 tree ob = TREE_VALUE (args);
1406 if (TREE_CODE (ob) == ADDR_EXPR)
1407 {
1408 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS);
1409 pp_dot (cxx_pp);
1410 }
1411 else if (TREE_CODE (ob) != PARM_DECL
1412 || strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this"))
1413 {
1414 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1415 pp_arrow (cxx_pp);
1416 }
1417 args = TREE_CHAIN (args);
1418 }
1419 dump_expr (fn, flags | TFF_EXPR_IN_PARENS);
1420 pp_cxx_left_paren (cxx_pp);
1421 dump_expr_list (args, flags);
1422 pp_cxx_right_paren (cxx_pp);
1423 }
1424 break;
1425
1426 case NEW_EXPR:
1427 {
1428 tree type = TREE_OPERAND (t, 1);
1429 tree init = TREE_OPERAND (t, 2);
1430 if (NEW_EXPR_USE_GLOBAL (t))
1431 pp_cxx_colon_colon (cxx_pp);
1432 pp_cxx_identifier (cxx_pp, "new");
1433 if (TREE_OPERAND (t, 0))
1434 {
1435 pp_cxx_left_paren (cxx_pp);
1436 dump_expr_list (TREE_OPERAND (t, 0), flags);
1437 pp_cxx_right_paren (cxx_pp);
1438 pp_cxx_whitespace (cxx_pp);
1439 }
1440 if (TREE_CODE (type) == ARRAY_REF)
1441 type = build_cplus_array_type
1442 (TREE_OPERAND (type, 0),
1443 build_index_type (fold_build2 (MINUS_EXPR, integer_type_node,
1444 TREE_OPERAND (type, 1),
1445 integer_one_node)));
1446 dump_type (type, flags);
1447 if (init)
1448 {
1449 pp_cxx_left_paren (cxx_pp);
1450 if (TREE_CODE (init) == TREE_LIST)
1451 dump_expr_list (init, flags);
1452 else if (init == void_zero_node)
1453 /* This representation indicates an empty initializer,
1454 e.g.: "new int()". */
1455 ;
1456 else
1457 dump_expr (init, flags);
1458 pp_cxx_right_paren (cxx_pp);
1459 }
1460 }
1461 break;
1462
1463 case TARGET_EXPR:
1464 /* Note that this only works for G++ target exprs. If somebody
1465 builds a general TARGET_EXPR, there's no way to represent that
1466 it initializes anything other that the parameter slot for the
1467 default argument. Note we may have cleared out the first
1468 operand in expand_expr, so don't go killing ourselves. */
1469 if (TREE_OPERAND (t, 1))
1470 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1471 break;
1472
1473 case INIT_EXPR:
1474 case MODIFY_EXPR:
1475 case PLUS_EXPR:
1476 case MINUS_EXPR:
1477 case MULT_EXPR:
1478 case TRUNC_DIV_EXPR:
1479 case TRUNC_MOD_EXPR:
1480 case MIN_EXPR:
1481 case MAX_EXPR:
1482 case LSHIFT_EXPR:
1483 case RSHIFT_EXPR:
1484 case BIT_IOR_EXPR:
1485 case BIT_XOR_EXPR:
1486 case BIT_AND_EXPR:
1487 case TRUTH_ANDIF_EXPR:
1488 case TRUTH_ORIF_EXPR:
1489 case LT_EXPR:
1490 case LE_EXPR:
1491 case GT_EXPR:
1492 case GE_EXPR:
1493 case EQ_EXPR:
1494 case NE_EXPR:
1495 case EXACT_DIV_EXPR:
1496 dump_binary_op (operator_name_info[(int) TREE_CODE (t)].name, t, flags);
1497 break;
1498
1499 case CEIL_DIV_EXPR:
1500 case FLOOR_DIV_EXPR:
1501 case ROUND_DIV_EXPR:
1502 case RDIV_EXPR:
1503 dump_binary_op ("/", t, flags);
1504 break;
1505
1506 case CEIL_MOD_EXPR:
1507 case FLOOR_MOD_EXPR:
1508 case ROUND_MOD_EXPR:
1509 dump_binary_op ("%", t, flags);
1510 break;
1511
1512 case COMPONENT_REF:
1513 {
1514 tree ob = TREE_OPERAND (t, 0);
1515 if (TREE_CODE (ob) == INDIRECT_REF)
1516 {
1517 ob = TREE_OPERAND (ob, 0);
1518 if (TREE_CODE (ob) != PARM_DECL
1519 || (DECL_NAME (ob)
1520 && strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this")))
1521 {
1522 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1523 pp_cxx_arrow (cxx_pp);
1524 }
1525 }
1526 else
1527 {
1528 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1529 pp_cxx_dot (cxx_pp);
1530 }
1531 dump_expr (TREE_OPERAND (t, 1), flags & ~TFF_EXPR_IN_PARENS);
1532 }
1533 break;
1534
1535 case ARRAY_REF:
1536 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1537 pp_cxx_left_bracket (cxx_pp);
1538 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1539 pp_cxx_right_bracket (cxx_pp);
1540 break;
1541
1542 case UNARY_PLUS_EXPR:
1543 dump_unary_op ("+", t, flags);
1544 break;
1545
1546 case ADDR_EXPR:
1547 if (TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL
1548 || TREE_CODE (TREE_OPERAND (t, 0)) == STRING_CST
1549 /* An ADDR_EXPR can have reference type. In that case, we
1550 shouldn't print the `&' doing so indicates to the user
1551 that the expression has pointer type. */
1552 || (TREE_TYPE (t)
1553 && TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE))
1554 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1555 else if (TREE_CODE (TREE_OPERAND (t, 0)) == LABEL_DECL)
1556 dump_unary_op ("&&", t, flags);
1557 else
1558 dump_unary_op ("&", t, flags);
1559 break;
1560
1561 case INDIRECT_REF:
1562 if (TREE_HAS_CONSTRUCTOR (t))
1563 {
1564 t = TREE_OPERAND (t, 0);
1565 gcc_assert (TREE_CODE (t) == CALL_EXPR);
1566 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1567 pp_cxx_left_paren (cxx_pp);
1568 dump_expr_list (TREE_CHAIN (TREE_OPERAND (t, 1)), flags);
1569 pp_cxx_right_paren (cxx_pp);
1570 }
1571 else
1572 {
1573 if (TREE_OPERAND (t,0) != NULL_TREE
1574 && TREE_TYPE (TREE_OPERAND (t, 0))
1575 && NEXT_CODE (TREE_OPERAND (t, 0)) == REFERENCE_TYPE)
1576 dump_expr (TREE_OPERAND (t, 0), flags);
1577 else
1578 dump_unary_op ("*", t, flags);
1579 }
1580 break;
1581
1582 case NEGATE_EXPR:
1583 case BIT_NOT_EXPR:
1584 case TRUTH_NOT_EXPR:
1585 case PREDECREMENT_EXPR:
1586 case PREINCREMENT_EXPR:
1587 dump_unary_op (operator_name_info [(int)TREE_CODE (t)].name, t, flags);
1588 break;
1589
1590 case POSTDECREMENT_EXPR:
1591 case POSTINCREMENT_EXPR:
1592 pp_cxx_left_paren (cxx_pp);
1593 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1594 pp_cxx_identifier (cxx_pp, operator_name_info[(int)TREE_CODE (t)].name);
1595 pp_cxx_right_paren (cxx_pp);
1596 break;
1597
1598 case NON_LVALUE_EXPR:
1599 /* FIXME: This is a KLUDGE workaround for a parsing problem. There
1600 should be another level of INDIRECT_REF so that I don't have to do
1601 this. */
1602 if (TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == POINTER_TYPE)
1603 {
1604 tree next = TREE_TYPE (TREE_TYPE (t));
1605
1606 while (TREE_CODE (next) == POINTER_TYPE)
1607 next = TREE_TYPE (next);
1608
1609 if (TREE_CODE (next) == FUNCTION_TYPE)
1610 {
1611 if (flags & TFF_EXPR_IN_PARENS)
1612 pp_cxx_left_paren (cxx_pp);
1613 pp_cxx_star (cxx_pp);
1614 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1615 if (flags & TFF_EXPR_IN_PARENS)
1616 pp_cxx_right_paren (cxx_pp);
1617 break;
1618 }
1619 /* Else fall through. */
1620 }
1621 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1622 break;
1623
1624 case NOP_EXPR:
1625 case CONVERT_EXPR:
1626 {
1627 tree op = TREE_OPERAND (t, 0);
1628
1629 if (!same_type_p (TREE_TYPE (op), TREE_TYPE (t)))
1630 {
1631 /* It is a cast, but we cannot tell whether it is a
1632 reinterpret or static cast. Use the C style notation. */
1633 if (flags & TFF_EXPR_IN_PARENS)
1634 pp_cxx_left_paren (cxx_pp);
1635 pp_cxx_left_paren (cxx_pp);
1636 dump_type (TREE_TYPE (t), flags);
1637 pp_cxx_right_paren (cxx_pp);
1638 dump_expr (op, flags | TFF_EXPR_IN_PARENS);
1639 if (flags & TFF_EXPR_IN_PARENS)
1640 pp_cxx_right_paren (cxx_pp);
1641 }
1642 else
1643 dump_expr (op, flags);
1644 break;
1645 }
1646
1647 case CONSTRUCTOR:
1648 if (TREE_TYPE (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))
1649 {
1650 tree idx = build_ptrmemfunc_access_expr (t, pfn_identifier);
1651
1652 if (integer_zerop (idx))
1653 {
1654 /* A NULL pointer-to-member constant. */
1655 pp_cxx_left_paren (cxx_pp);
1656 pp_cxx_left_paren (cxx_pp);
1657 dump_type (TREE_TYPE (t), flags);
1658 pp_cxx_right_paren (cxx_pp);
1659 pp_character (cxx_pp, '0');
1660 pp_cxx_right_paren (cxx_pp);
1661 break;
1662 }
1663 else if (host_integerp (idx, 0))
1664 {
1665 tree virtuals;
1666 unsigned HOST_WIDE_INT n;
1667
1668 t = TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (TREE_TYPE (t)));
1669 t = TYPE_METHOD_BASETYPE (t);
1670 virtuals = BINFO_VIRTUALS (TYPE_BINFO (TYPE_MAIN_VARIANT (t)));
1671
1672 n = tree_low_cst (idx, 0);
1673
1674 /* Map vtable index back one, to allow for the null pointer to
1675 member. */
1676 --n;
1677
1678 while (n > 0 && virtuals)
1679 {
1680 --n;
1681 virtuals = TREE_CHAIN (virtuals);
1682 }
1683 if (virtuals)
1684 {
1685 dump_expr (BV_FN (virtuals),
1686 flags | TFF_EXPR_IN_PARENS);
1687 break;
1688 }
1689 }
1690 }
1691 if (TREE_TYPE (t) && EMPTY_CONSTRUCTOR_P (t))
1692 {
1693 dump_type (TREE_TYPE (t), 0);
1694 pp_cxx_left_paren (cxx_pp);
1695 pp_cxx_right_paren (cxx_pp);
1696 }
1697 else
1698 {
1699 pp_cxx_left_brace (cxx_pp);
1700 dump_expr_init_vec (CONSTRUCTOR_ELTS (t), flags);
1701 pp_cxx_right_brace (cxx_pp);
1702 }
1703
1704 break;
1705
1706 case OFFSET_REF:
1707 {
1708 tree ob = TREE_OPERAND (t, 0);
1709 if (is_dummy_object (ob))
1710 {
1711 t = TREE_OPERAND (t, 1);
1712 if (TREE_CODE (t) == FUNCTION_DECL)
1713 /* A::f */
1714 dump_expr (t, flags | TFF_EXPR_IN_PARENS);
1715 else if (BASELINK_P (t))
1716 dump_expr (OVL_CURRENT (BASELINK_FUNCTIONS (t)),
1717 flags | TFF_EXPR_IN_PARENS);
1718 else
1719 dump_decl (t, flags);
1720 }
1721 else
1722 {
1723 if (TREE_CODE (ob) == INDIRECT_REF)
1724 {
1725 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS);
1726 pp_cxx_arrow (cxx_pp);
1727 pp_cxx_star (cxx_pp);
1728 }
1729 else
1730 {
1731 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1732 pp_cxx_dot (cxx_pp);
1733 pp_cxx_star (cxx_pp);
1734 }
1735 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1736 }
1737 break;
1738 }
1739
1740 case TEMPLATE_PARM_INDEX:
1741 dump_decl (TEMPLATE_PARM_DECL (t), flags & ~TFF_DECL_SPECIFIERS);
1742 break;
1743
1744 case SCOPE_REF:
1745 pp_expression (cxx_pp, t);
1746 break;
1747
1748 case CAST_EXPR:
1749 if (TREE_OPERAND (t, 0) == NULL_TREE
1750 || TREE_CHAIN (TREE_OPERAND (t, 0)))
1751 {
1752 dump_type (TREE_TYPE (t), flags);
1753 pp_cxx_left_paren (cxx_pp);
1754 dump_expr_list (TREE_OPERAND (t, 0), flags);
1755 pp_cxx_right_paren (cxx_pp);
1756 }
1757 else
1758 {
1759 pp_cxx_left_paren (cxx_pp);
1760 dump_type (TREE_TYPE (t), flags);
1761 pp_cxx_right_paren (cxx_pp);
1762 pp_cxx_left_paren (cxx_pp);
1763 dump_expr_list (TREE_OPERAND (t, 0), flags);
1764 pp_cxx_right_paren (cxx_pp);
1765 }
1766 break;
1767
1768 case STATIC_CAST_EXPR:
1769 pp_cxx_identifier (cxx_pp, "static_cast");
1770 goto cast;
1771 case REINTERPRET_CAST_EXPR:
1772 pp_cxx_identifier (cxx_pp, "reinterpret_cast");
1773 goto cast;
1774 case CONST_CAST_EXPR:
1775 pp_cxx_identifier (cxx_pp, "const_cast");
1776 goto cast;
1777 case DYNAMIC_CAST_EXPR:
1778 pp_cxx_identifier (cxx_pp, "dynamic_cast");
1779 cast:
1780 pp_cxx_begin_template_argument_list (cxx_pp);
1781 dump_type (TREE_TYPE (t), flags);
1782 pp_cxx_end_template_argument_list (cxx_pp);
1783 pp_cxx_left_paren (cxx_pp);
1784 dump_expr (TREE_OPERAND (t, 0), flags);
1785 pp_cxx_right_paren (cxx_pp);
1786 break;
1787
1788 case ARROW_EXPR:
1789 dump_expr (TREE_OPERAND (t, 0), flags);
1790 pp_cxx_arrow (cxx_pp);
1791 break;
1792
1793 case SIZEOF_EXPR:
1794 case ALIGNOF_EXPR:
1795 if (TREE_CODE (t) == SIZEOF_EXPR)
1796 pp_cxx_identifier (cxx_pp, "sizeof");
1797 else
1798 {
1799 gcc_assert (TREE_CODE (t) == ALIGNOF_EXPR);
1800 pp_cxx_identifier (cxx_pp, "__alignof__");
1801 }
1802 pp_cxx_whitespace (cxx_pp);
1803 pp_cxx_left_paren (cxx_pp);
1804 if (TYPE_P (TREE_OPERAND (t, 0)))
1805 dump_type (TREE_OPERAND (t, 0), flags);
1806 else
1807 dump_expr (TREE_OPERAND (t, 0), flags);
1808 pp_cxx_right_paren (cxx_pp);
1809 break;
1810
1811 case REALPART_EXPR:
1812 case IMAGPART_EXPR:
1813 pp_cxx_identifier (cxx_pp, operator_name_info[TREE_CODE (t)].name);
1814 pp_cxx_whitespace (cxx_pp);
1815 dump_expr (TREE_OPERAND (t, 0), flags);
1816 break;
1817
1818 case DEFAULT_ARG:
1819 pp_identifier (cxx_pp, "<unparsed>");
1820 break;
1821
1822 case TRY_CATCH_EXPR:
1823 case WITH_CLEANUP_EXPR:
1824 case CLEANUP_POINT_EXPR:
1825 dump_expr (TREE_OPERAND (t, 0), flags);
1826 break;
1827
1828 case PSEUDO_DTOR_EXPR:
1829 dump_expr (TREE_OPERAND (t, 2), flags);
1830 pp_cxx_dot (cxx_pp);
1831 dump_type (TREE_OPERAND (t, 0), flags);
1832 pp_cxx_colon_colon (cxx_pp);
1833 pp_cxx_complement (cxx_pp);
1834 dump_type (TREE_OPERAND (t, 1), flags);
1835 break;
1836
1837 case TEMPLATE_ID_EXPR:
1838 dump_decl (t, flags);
1839 break;
1840
1841 case BIND_EXPR:
1842 case STMT_EXPR:
1843 case STATEMENT_LIST:
1844 /* We don't yet have a way of dumping statements in a
1845 human-readable format. */
1846 pp_string (cxx_pp, "({...})");
1847 break;
1848
1849 case LOOP_EXPR:
1850 pp_string (cxx_pp, "while (1) { ");
1851 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1852 pp_cxx_right_brace (cxx_pp);
1853 break;
1854
1855 case EXIT_EXPR:
1856 pp_string (cxx_pp, "if (");
1857 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1858 pp_string (cxx_pp, ") break; ");
1859 break;
1860
1861 case BASELINK:
1862 dump_expr (get_first_fn (t), flags & ~TFF_EXPR_IN_PARENS);
1863 break;
1864
1865 case EMPTY_CLASS_EXPR:
1866 dump_type (TREE_TYPE (t), flags);
1867 pp_cxx_left_paren (cxx_pp);
1868 pp_cxx_right_paren (cxx_pp);
1869 break;
1870
1871 case NON_DEPENDENT_EXPR:
1872 dump_expr (TREE_OPERAND (t, 0), flags);
1873 break;
1874
1875 /* This list is incomplete, but should suffice for now.
1876 It is very important that `sorry' does not call
1877 `report_error_function'. That could cause an infinite loop. */
1878 default:
1879 pp_unsupported_tree (cxx_pp, t);
1880 /* fall through to ERROR_MARK... */
1881 case ERROR_MARK:
1882 pp_identifier (cxx_pp, "<expression error>");
1883 break;
1884 }
1885 }
1886
1887 static void
1888 dump_binary_op (const char *opstring, tree t, int flags)
1889 {
1890 pp_cxx_left_paren (cxx_pp);
1891 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1892 pp_cxx_whitespace (cxx_pp);
1893 if (opstring)
1894 pp_cxx_identifier (cxx_pp, opstring);
1895 else
1896 pp_identifier (cxx_pp, "<unknown operator>");
1897 pp_cxx_whitespace (cxx_pp);
1898 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1899 pp_cxx_right_paren (cxx_pp);
1900 }
1901
1902 static void
1903 dump_unary_op (const char *opstring, tree t, int flags)
1904 {
1905 if (flags & TFF_EXPR_IN_PARENS)
1906 pp_cxx_left_paren (cxx_pp);
1907 pp_cxx_identifier (cxx_pp, opstring);
1908 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1909 if (flags & TFF_EXPR_IN_PARENS)
1910 pp_cxx_right_paren (cxx_pp);
1911 }
1912
1913 static void
1914 reinit_cxx_pp (void)
1915 {
1916 pp_clear_output_area (cxx_pp);
1917 pp_base (cxx_pp)->padding = pp_none;
1918 pp_indentation (cxx_pp) = 0;
1919 pp_needs_newline (cxx_pp) = false;
1920 cxx_pp->enclosing_scope = 0;
1921 }
1922
1923
1924 /* Exported interface to stringifying types, exprs and decls under TFF_*
1925 control. */
1926
1927 const char *
1928 type_as_string (tree typ, int flags)
1929 {
1930 reinit_cxx_pp ();
1931 dump_type (typ, flags);
1932 return pp_formatted_text (cxx_pp);
1933 }
1934
1935 const char *
1936 expr_as_string (tree decl, int flags)
1937 {
1938 reinit_cxx_pp ();
1939 dump_expr (decl, flags);
1940 return pp_formatted_text (cxx_pp);
1941 }
1942
1943 const char *
1944 decl_as_string (tree decl, int flags)
1945 {
1946 reinit_cxx_pp ();
1947 dump_decl (decl, flags);
1948 return pp_formatted_text (cxx_pp);
1949 }
1950
1951 /* Generate the three forms of printable names for cxx_printable_name. */
1952
1953 const char *
1954 lang_decl_name (tree decl, int v)
1955 {
1956 if (v >= 2)
1957 return decl_as_string (decl, TFF_DECL_SPECIFIERS);
1958
1959 reinit_cxx_pp ();
1960 if (v == 1 && DECL_CLASS_SCOPE_P (decl))
1961 {
1962 dump_type (CP_DECL_CONTEXT (decl), TFF_PLAIN_IDENTIFIER);
1963 pp_cxx_colon_colon (cxx_pp);
1964 }
1965
1966 if (TREE_CODE (decl) == FUNCTION_DECL)
1967 dump_function_name (decl, TFF_PLAIN_IDENTIFIER);
1968 else
1969 dump_decl (DECL_NAME (decl), TFF_PLAIN_IDENTIFIER);
1970
1971 return pp_formatted_text (cxx_pp);
1972 }
1973
1974 /* Return the location of a tree passed to %+ formats. */
1975
1976 static location_t
1977 location_of (tree t)
1978 {
1979 if (TREE_CODE (t) == PARM_DECL && DECL_CONTEXT (t))
1980 t = DECL_CONTEXT (t);
1981 else if (TYPE_P (t))
1982 t = TYPE_MAIN_DECL (t);
1983 else if (TREE_CODE (t) == OVERLOAD)
1984 t = OVL_FUNCTION (t);
1985
1986 return DECL_SOURCE_LOCATION (t);
1987 }
1988
1989 /* Now the interfaces from error et al to dump_type et al. Each takes an
1990 on/off VERBOSE flag and supply the appropriate TFF_ flags to a dump_
1991 function. */
1992
1993 static const char *
1994 decl_to_string (tree decl, int verbose)
1995 {
1996 int flags = 0;
1997
1998 if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == RECORD_TYPE
1999 || TREE_CODE (decl) == UNION_TYPE || TREE_CODE (decl) == ENUMERAL_TYPE)
2000 flags = TFF_CLASS_KEY_OR_ENUM;
2001 if (verbose)
2002 flags |= TFF_DECL_SPECIFIERS;
2003 else if (TREE_CODE (decl) == FUNCTION_DECL)
2004 flags |= TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE;
2005 flags |= TFF_TEMPLATE_HEADER;
2006
2007 reinit_cxx_pp ();
2008 dump_decl (decl, flags);
2009 return pp_formatted_text (cxx_pp);
2010 }
2011
2012 static const char *
2013 expr_to_string (tree decl)
2014 {
2015 reinit_cxx_pp ();
2016 dump_expr (decl, 0);
2017 return pp_formatted_text (cxx_pp);
2018 }
2019
2020 static const char *
2021 fndecl_to_string (tree fndecl, int verbose)
2022 {
2023 int flags;
2024
2025 flags = TFF_EXCEPTION_SPECIFICATION | TFF_DECL_SPECIFIERS
2026 | TFF_TEMPLATE_HEADER;
2027 if (verbose)
2028 flags |= TFF_FUNCTION_DEFAULT_ARGUMENTS;
2029 reinit_cxx_pp ();
2030 dump_decl (fndecl, flags);
2031 return pp_formatted_text (cxx_pp);
2032 }
2033
2034
2035 static const char *
2036 code_to_string (enum tree_code c)
2037 {
2038 return tree_code_name [c];
2039 }
2040
2041 const char *
2042 language_to_string (enum languages c)
2043 {
2044 switch (c)
2045 {
2046 case lang_c:
2047 return "C";
2048
2049 case lang_cplusplus:
2050 return "C++";
2051
2052 case lang_java:
2053 return "Java";
2054
2055 default:
2056 gcc_unreachable ();
2057 }
2058 return NULL;
2059 }
2060
2061 /* Return the proper printed version of a parameter to a C++ function. */
2062
2063 static const char *
2064 parm_to_string (int p)
2065 {
2066 reinit_cxx_pp ();
2067 if (p < 0)
2068 pp_string (cxx_pp, "'this'");
2069 else
2070 pp_decimal_int (cxx_pp, p + 1);
2071 return pp_formatted_text (cxx_pp);
2072 }
2073
2074 static const char *
2075 op_to_string (enum tree_code p)
2076 {
2077 tree id = operator_name_info[(int) p].identifier;
2078 return id ? IDENTIFIER_POINTER (id) : "<unknown>";
2079 }
2080
2081 static const char *
2082 type_to_string (tree typ, int verbose)
2083 {
2084 int flags = 0;
2085 if (verbose)
2086 flags |= TFF_CLASS_KEY_OR_ENUM;
2087 flags |= TFF_TEMPLATE_HEADER;
2088
2089 reinit_cxx_pp ();
2090 dump_type (typ, flags);
2091 return pp_formatted_text (cxx_pp);
2092 }
2093
2094 static const char *
2095 assop_to_string (enum tree_code p)
2096 {
2097 tree id = assignment_operator_name_info[(int) p].identifier;
2098 return id ? IDENTIFIER_POINTER (id) : "{unknown}";
2099 }
2100
2101 static const char *
2102 args_to_string (tree p, int verbose)
2103 {
2104 int flags = 0;
2105 if (verbose)
2106 flags |= TFF_CLASS_KEY_OR_ENUM;
2107
2108 if (p == NULL_TREE)
2109 return "";
2110
2111 if (TYPE_P (TREE_VALUE (p)))
2112 return type_as_string (p, flags);
2113
2114 reinit_cxx_pp ();
2115 for (; p; p = TREE_CHAIN (p))
2116 {
2117 if (TREE_VALUE (p) == null_node)
2118 pp_cxx_identifier (cxx_pp, "NULL");
2119 else
2120 dump_type (error_type (TREE_VALUE (p)), flags);
2121 if (TREE_CHAIN (p))
2122 pp_separate_with_comma (cxx_pp);
2123 }
2124 return pp_formatted_text (cxx_pp);
2125 }
2126
2127 static const char *
2128 cv_to_string (tree p, int v)
2129 {
2130 reinit_cxx_pp ();
2131 pp_base (cxx_pp)->padding = v ? pp_before : pp_none;
2132 pp_cxx_cv_qualifier_seq (cxx_pp, p);
2133 return pp_formatted_text (cxx_pp);
2134 }
2135
2136 /* Langhook for print_error_function. */
2137 void
2138 cxx_print_error_function (diagnostic_context *context, const char *file)
2139 {
2140 lhd_print_error_function (context, file);
2141 pp_base_set_prefix (context->printer, file);
2142 maybe_print_instantiation_context (context);
2143 }
2144
2145 static void
2146 cp_diagnostic_starter (diagnostic_context *context,
2147 diagnostic_info *diagnostic)
2148 {
2149 diagnostic_report_current_module (context);
2150 cp_print_error_function (context, diagnostic);
2151 maybe_print_instantiation_context (context);
2152 pp_base_set_prefix (context->printer, diagnostic_build_prefix (diagnostic));
2153 }
2154
2155 static void
2156 cp_diagnostic_finalizer (diagnostic_context *context,
2157 diagnostic_info *diagnostic ATTRIBUTE_UNUSED)
2158 {
2159 pp_base_destroy_prefix (context->printer);
2160 }
2161
2162 /* Print current function onto BUFFER, in the process of reporting
2163 a diagnostic message. Called from cp_diagnostic_starter. */
2164 static void
2165 cp_print_error_function (diagnostic_context *context,
2166 diagnostic_info *diagnostic)
2167 {
2168 if (diagnostic_last_function_changed (context))
2169 {
2170 const char *old_prefix = context->printer->prefix;
2171 const char *file = LOCATION_FILE (diagnostic->location);
2172 char *new_prefix = file ? file_name_as_prefix (file) : NULL;
2173
2174 pp_base_set_prefix (context->printer, new_prefix);
2175
2176 if (current_function_decl == NULL)
2177 pp_base_string (context->printer, "At global scope:");
2178 else
2179 pp_printf (context->printer, "In %s %qs:",
2180 function_category (current_function_decl),
2181 cxx_printable_name (current_function_decl, 2));
2182 pp_base_newline (context->printer);
2183
2184 diagnostic_set_last_function (context);
2185 pp_base_destroy_prefix (context->printer);
2186 context->printer->prefix = old_prefix;
2187 }
2188 }
2189
2190 /* Returns a description of FUNCTION using standard terminology. */
2191 static const char *
2192 function_category (tree fn)
2193 {
2194 if (DECL_FUNCTION_MEMBER_P (fn))
2195 {
2196 if (DECL_STATIC_FUNCTION_P (fn))
2197 return "static member function";
2198 else if (DECL_COPY_CONSTRUCTOR_P (fn))
2199 return "copy constructor";
2200 else if (DECL_CONSTRUCTOR_P (fn))
2201 return "constructor";
2202 else if (DECL_DESTRUCTOR_P (fn))
2203 return "destructor";
2204 else
2205 return "member function";
2206 }
2207 else
2208 return "function";
2209 }
2210
2211 /* Report the full context of a current template instantiation,
2212 onto BUFFER. */
2213 static void
2214 print_instantiation_full_context (diagnostic_context *context)
2215 {
2216 tree p = current_instantiation ();
2217 location_t location = input_location;
2218
2219 if (p)
2220 {
2221 if (current_function_decl != TINST_DECL (p)
2222 && current_function_decl != NULL_TREE)
2223 /* We can get here during the processing of some synthesized
2224 method. Then, TINST_DECL (p) will be the function that's causing
2225 the synthesis. */
2226 ;
2227 else
2228 {
2229 if (current_function_decl == TINST_DECL (p))
2230 /* Avoid redundancy with the "In function" line. */;
2231 else
2232 pp_verbatim (context->printer,
2233 "%s: In instantiation of %qs:\n",
2234 LOCATION_FILE (location),
2235 decl_as_string (TINST_DECL (p),
2236 TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE));
2237
2238 location = TINST_LOCATION (p);
2239 p = TREE_CHAIN (p);
2240 }
2241 }
2242
2243 print_instantiation_partial_context (context, p, location);
2244 }
2245
2246 /* Same as above but less verbose. */
2247 static void
2248 print_instantiation_partial_context (diagnostic_context *context,
2249 tree t, location_t loc)
2250 {
2251 expanded_location xloc;
2252 for (; ; t = TREE_CHAIN (t))
2253 {
2254 xloc = expand_location (loc);
2255 if (t == NULL_TREE)
2256 break;
2257 pp_verbatim (context->printer, "%s:%d: instantiated from %qs\n",
2258 xloc.file, xloc.line,
2259 decl_as_string (TINST_DECL (t),
2260 TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE));
2261 loc = TINST_LOCATION (t);
2262 }
2263 pp_verbatim (context->printer, "%s:%d: instantiated from here",
2264 xloc.file, xloc.line);
2265 pp_base_newline (context->printer);
2266 }
2267
2268 /* Called from cp_thing to print the template context for an error. */
2269 static void
2270 maybe_print_instantiation_context (diagnostic_context *context)
2271 {
2272 if (!problematic_instantiation_changed () || current_instantiation () == 0)
2273 return;
2274
2275 record_last_problematic_instantiation ();
2276 print_instantiation_full_context (context);
2277 }
2278
2279 /* Report the bare minimum context of a template instantiation. */
2280 void
2281 print_instantiation_context (void)
2282 {
2283 print_instantiation_partial_context
2284 (global_dc, current_instantiation (), input_location);
2285 diagnostic_flush_buffer (global_dc);
2286 }
2287 \f
2288 /* Called from output_format -- during diagnostic message processing --
2289 to handle C++ specific format specifier with the following meanings:
2290 %A function argument-list.
2291 %C tree code.
2292 %D declaration.
2293 %E expression.
2294 %F function declaration.
2295 %L language as used in extern "lang".
2296 %O binary operator.
2297 %P function parameter whose position is indicated by an integer.
2298 %Q assignment operator.
2299 %T type.
2300 %V cv-qualifier. */
2301 static bool
2302 cp_printer (pretty_printer *pp, text_info *text, const char *spec,
2303 int precision, bool wide, bool set_locus, bool verbose)
2304 {
2305 const char *result;
2306 tree t = NULL;
2307 #define next_tree (t = va_arg (*text->args_ptr, tree))
2308 #define next_tcode va_arg (*text->args_ptr, enum tree_code)
2309 #define next_lang va_arg (*text->args_ptr, enum languages)
2310 #define next_int va_arg (*text->args_ptr, int)
2311
2312 if (precision != 0 || wide)
2313 return false;
2314
2315 if (text->locus == NULL)
2316 set_locus = false;
2317
2318 switch (*spec)
2319 {
2320 case 'A': result = args_to_string (next_tree, verbose); break;
2321 case 'C': result = code_to_string (next_tcode); break;
2322 case 'D': result = decl_to_string (next_tree, verbose); break;
2323 case 'E': result = expr_to_string (next_tree); break;
2324 case 'F': result = fndecl_to_string (next_tree, verbose); break;
2325 case 'L': result = language_to_string (next_lang); break;
2326 case 'O': result = op_to_string (next_tcode); break;
2327 case 'P': result = parm_to_string (next_int); break;
2328 case 'Q': result = assop_to_string (next_tcode); break;
2329 case 'T': result = type_to_string (next_tree, verbose); break;
2330 case 'V': result = cv_to_string (next_tree, verbose); break;
2331
2332 default:
2333 return false;
2334 }
2335
2336 pp_base_string (pp, result);
2337 if (set_locus && t != NULL)
2338 *text->locus = location_of (t);
2339 return true;
2340 #undef next_tree
2341 #undef next_tcode
2342 #undef next_lang
2343 #undef next_int
2344 }
2345 \f
2346 /* Callback from cpp_error for PFILE to print diagnostics arising from
2347 interpreting strings. The diagnostic is of type LEVEL; MSG is the
2348 translated message and AP the arguments. */
2349
2350 void
2351 cp_cpp_error (cpp_reader *pfile ATTRIBUTE_UNUSED, int level,
2352 const char *msg, va_list *ap)
2353 {
2354 diagnostic_info diagnostic;
2355 diagnostic_t dlevel;
2356 switch (level)
2357 {
2358 case CPP_DL_WARNING:
2359 case CPP_DL_WARNING_SYSHDR:
2360 dlevel = DK_WARNING;
2361 break;
2362 case CPP_DL_PEDWARN:
2363 dlevel = pedantic_error_kind ();
2364 break;
2365 case CPP_DL_ERROR:
2366 dlevel = DK_ERROR;
2367 break;
2368 case CPP_DL_ICE:
2369 dlevel = DK_ICE;
2370 break;
2371 default:
2372 gcc_unreachable ();
2373 }
2374 diagnostic_set_info_translated (&diagnostic, msg, ap,
2375 input_location, dlevel);
2376 report_diagnostic (&diagnostic);
2377 }
Mirror of the offical gcc git repository hosted at gcc.gnu.org