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gcc/cp:
[official-gcc.git] / gcc / cp / error.c
blob22c2d304d88ca02e84dfb14619d2a2a766fcd57e
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 /* Print out an expression E under control of FLAGS. */
1282
1283 static void
1284 dump_expr (tree t, int flags)
1285 {
1286 if (t == 0)
1287 return;
1288
1289 switch (TREE_CODE (t))
1290 {
1291 case VAR_DECL:
1292 case PARM_DECL:
1293 case FIELD_DECL:
1294 case CONST_DECL:
1295 case FUNCTION_DECL:
1296 case TEMPLATE_DECL:
1297 case NAMESPACE_DECL:
1298 case LABEL_DECL:
1299 case OVERLOAD:
1300 case IDENTIFIER_NODE:
1301 dump_decl (t, (flags & ~TFF_DECL_SPECIFIERS) | TFF_NO_FUNCTION_ARGUMENTS);
1302 break;
1303
1304 case STRING_CST:
1305 if (PAREN_STRING_LITERAL_P (t))
1306 pp_cxx_left_paren (cxx_pp);
1307 pp_c_constant (pp_c_base (cxx_pp), t);
1308 if (PAREN_STRING_LITERAL_P (t))
1309 pp_cxx_right_paren (cxx_pp);
1310 break;
1311
1312 case INTEGER_CST:
1313 case REAL_CST:
1314 pp_c_constant (pp_c_base (cxx_pp), t);
1315 break;
1316
1317 case THROW_EXPR:
1318 pp_cxx_identifier (cxx_pp, "throw");
1319 dump_expr (TREE_OPERAND (t, 0), flags);
1320 break;
1321
1322 case PTRMEM_CST:
1323 pp_ampersand (cxx_pp);
1324 dump_type (PTRMEM_CST_CLASS (t), flags);
1325 pp_cxx_colon_colon (cxx_pp);
1326 pp_cxx_tree_identifier (cxx_pp, DECL_NAME (PTRMEM_CST_MEMBER (t)));
1327 break;
1328
1329 case COMPOUND_EXPR:
1330 pp_cxx_left_paren (cxx_pp);
1331 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1332 pp_separate_with_comma (cxx_pp);
1333 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1334 pp_cxx_right_paren (cxx_pp);
1335 break;
1336
1337 case COND_EXPR:
1338 pp_cxx_left_paren (cxx_pp);
1339 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1340 pp_string (cxx_pp, " ? ");
1341 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1342 pp_string (cxx_pp, " : ");
1343 dump_expr (TREE_OPERAND (t, 2), flags | TFF_EXPR_IN_PARENS);
1344 pp_cxx_right_paren (cxx_pp);
1345 break;
1346
1347 case SAVE_EXPR:
1348 if (TREE_HAS_CONSTRUCTOR (t))
1349 {
1350 pp_cxx_identifier (cxx_pp, "new");
1351 pp_cxx_whitespace (cxx_pp);
1352 dump_type (TREE_TYPE (TREE_TYPE (t)), flags);
1353 }
1354 else
1355 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1356 break;
1357
1358 case AGGR_INIT_EXPR:
1359 {
1360 tree fn = NULL_TREE;
1361
1362 if (TREE_CODE (TREE_OPERAND (t, 0)) == ADDR_EXPR)
1363 fn = TREE_OPERAND (TREE_OPERAND (t, 0), 0);
1364
1365 if (fn && TREE_CODE (fn) == FUNCTION_DECL)
1366 {
1367 if (DECL_CONSTRUCTOR_P (fn))
1368 dump_type (DECL_CONTEXT (fn), flags);
1369 else
1370 dump_decl (fn, 0);
1371 }
1372 else
1373 dump_expr (TREE_OPERAND (t, 0), 0);
1374 }
1375 pp_cxx_left_paren (cxx_pp);
1376 if (TREE_OPERAND (t, 1))
1377 dump_expr_list (TREE_CHAIN (TREE_OPERAND (t, 1)), flags);
1378 pp_cxx_right_paren (cxx_pp);
1379 break;
1380
1381 case CALL_EXPR:
1382 {
1383 tree fn = TREE_OPERAND (t, 0);
1384 tree args = TREE_OPERAND (t, 1);
1385
1386 if (TREE_CODE (fn) == ADDR_EXPR)
1387 fn = TREE_OPERAND (fn, 0);
1388
1389 if (TREE_TYPE (fn) != NULL_TREE && NEXT_CODE (fn) == METHOD_TYPE)
1390 {
1391 tree ob = TREE_VALUE (args);
1392 if (TREE_CODE (ob) == ADDR_EXPR)
1393 {
1394 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS);
1395 pp_dot (cxx_pp);
1396 }
1397 else if (TREE_CODE (ob) != PARM_DECL
1398 || strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this"))
1399 {
1400 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1401 pp_arrow (cxx_pp);
1402 }
1403 args = TREE_CHAIN (args);
1404 }
1405 dump_expr (fn, flags | TFF_EXPR_IN_PARENS);
1406 pp_cxx_left_paren (cxx_pp);
1407 dump_expr_list (args, flags);
1408 pp_cxx_right_paren (cxx_pp);
1409 }
1410 break;
1411
1412 case NEW_EXPR:
1413 {
1414 tree type = TREE_OPERAND (t, 1);
1415 tree init = TREE_OPERAND (t, 2);
1416 if (NEW_EXPR_USE_GLOBAL (t))
1417 pp_cxx_colon_colon (cxx_pp);
1418 pp_cxx_identifier (cxx_pp, "new");
1419 if (TREE_OPERAND (t, 0))
1420 {
1421 pp_cxx_left_paren (cxx_pp);
1422 dump_expr_list (TREE_OPERAND (t, 0), flags);
1423 pp_cxx_right_paren (cxx_pp);
1424 pp_cxx_whitespace (cxx_pp);
1425 }
1426 if (TREE_CODE (type) == ARRAY_REF)
1427 type = build_cplus_array_type
1428 (TREE_OPERAND (type, 0),
1429 build_index_type (fold_build2 (MINUS_EXPR, integer_type_node,
1430 TREE_OPERAND (type, 1),
1431 integer_one_node)));
1432 dump_type (type, flags);
1433 if (init)
1434 {
1435 pp_cxx_left_paren (cxx_pp);
1436 if (TREE_CODE (init) == TREE_LIST)
1437 dump_expr_list (init, flags);
1438 else if (init == void_zero_node)
1439 /* This representation indicates an empty initializer,
1440 e.g.: "new int()". */
1441 ;
1442 else
1443 dump_expr (init, flags);
1444 pp_cxx_right_paren (cxx_pp);
1445 }
1446 }
1447 break;
1448
1449 case TARGET_EXPR:
1450 /* Note that this only works for G++ target exprs. If somebody
1451 builds a general TARGET_EXPR, there's no way to represent that
1452 it initializes anything other that the parameter slot for the
1453 default argument. Note we may have cleared out the first
1454 operand in expand_expr, so don't go killing ourselves. */
1455 if (TREE_OPERAND (t, 1))
1456 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1457 break;
1458
1459 case INIT_EXPR:
1460 case MODIFY_EXPR:
1461 case PLUS_EXPR:
1462 case MINUS_EXPR:
1463 case MULT_EXPR:
1464 case TRUNC_DIV_EXPR:
1465 case TRUNC_MOD_EXPR:
1466 case MIN_EXPR:
1467 case MAX_EXPR:
1468 case LSHIFT_EXPR:
1469 case RSHIFT_EXPR:
1470 case BIT_IOR_EXPR:
1471 case BIT_XOR_EXPR:
1472 case BIT_AND_EXPR:
1473 case TRUTH_ANDIF_EXPR:
1474 case TRUTH_ORIF_EXPR:
1475 case LT_EXPR:
1476 case LE_EXPR:
1477 case GT_EXPR:
1478 case GE_EXPR:
1479 case EQ_EXPR:
1480 case NE_EXPR:
1481 case EXACT_DIV_EXPR:
1482 dump_binary_op (operator_name_info[(int) TREE_CODE (t)].name, t, flags);
1483 break;
1484
1485 case CEIL_DIV_EXPR:
1486 case FLOOR_DIV_EXPR:
1487 case ROUND_DIV_EXPR:
1488 case RDIV_EXPR:
1489 dump_binary_op ("/", t, flags);
1490 break;
1491
1492 case CEIL_MOD_EXPR:
1493 case FLOOR_MOD_EXPR:
1494 case ROUND_MOD_EXPR:
1495 dump_binary_op ("%", t, flags);
1496 break;
1497
1498 case COMPONENT_REF:
1499 {
1500 tree ob = TREE_OPERAND (t, 0);
1501 if (TREE_CODE (ob) == INDIRECT_REF)
1502 {
1503 ob = TREE_OPERAND (ob, 0);
1504 if (TREE_CODE (ob) != PARM_DECL
1505 || (DECL_NAME (ob)
1506 && strcmp (IDENTIFIER_POINTER (DECL_NAME (ob)), "this")))
1507 {
1508 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1509 pp_cxx_arrow (cxx_pp);
1510 }
1511 }
1512 else
1513 {
1514 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1515 pp_cxx_dot (cxx_pp);
1516 }
1517 dump_expr (TREE_OPERAND (t, 1), flags & ~TFF_EXPR_IN_PARENS);
1518 }
1519 break;
1520
1521 case ARRAY_REF:
1522 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1523 pp_cxx_left_bracket (cxx_pp);
1524 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1525 pp_cxx_right_bracket (cxx_pp);
1526 break;
1527
1528 case UNARY_PLUS_EXPR:
1529 dump_unary_op ("+", t, flags);
1530 break;
1531
1532 case ADDR_EXPR:
1533 if (TREE_CODE (TREE_OPERAND (t, 0)) == FUNCTION_DECL
1534 || TREE_CODE (TREE_OPERAND (t, 0)) == STRING_CST
1535 /* An ADDR_EXPR can have reference type. In that case, we
1536 shouldn't print the `&' doing so indicates to the user
1537 that the expression has pointer type. */
1538 || (TREE_TYPE (t)
1539 && TREE_CODE (TREE_TYPE (t)) == REFERENCE_TYPE))
1540 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1541 else if (TREE_CODE (TREE_OPERAND (t, 0)) == LABEL_DECL)
1542 dump_unary_op ("&&", t, flags);
1543 else
1544 dump_unary_op ("&", t, flags);
1545 break;
1546
1547 case INDIRECT_REF:
1548 if (TREE_HAS_CONSTRUCTOR (t))
1549 {
1550 t = TREE_OPERAND (t, 0);
1551 gcc_assert (TREE_CODE (t) == CALL_EXPR);
1552 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1553 pp_cxx_left_paren (cxx_pp);
1554 dump_expr_list (TREE_CHAIN (TREE_OPERAND (t, 1)), flags);
1555 pp_cxx_right_paren (cxx_pp);
1556 }
1557 else
1558 {
1559 if (TREE_OPERAND (t,0) != NULL_TREE
1560 && TREE_TYPE (TREE_OPERAND (t, 0))
1561 && NEXT_CODE (TREE_OPERAND (t, 0)) == REFERENCE_TYPE)
1562 dump_expr (TREE_OPERAND (t, 0), flags);
1563 else
1564 dump_unary_op ("*", t, flags);
1565 }
1566 break;
1567
1568 case NEGATE_EXPR:
1569 case BIT_NOT_EXPR:
1570 case TRUTH_NOT_EXPR:
1571 case PREDECREMENT_EXPR:
1572 case PREINCREMENT_EXPR:
1573 dump_unary_op (operator_name_info [(int)TREE_CODE (t)].name, t, flags);
1574 break;
1575
1576 case POSTDECREMENT_EXPR:
1577 case POSTINCREMENT_EXPR:
1578 pp_cxx_left_paren (cxx_pp);
1579 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1580 pp_cxx_identifier (cxx_pp, operator_name_info[(int)TREE_CODE (t)].name);
1581 pp_cxx_right_paren (cxx_pp);
1582 break;
1583
1584 case NON_LVALUE_EXPR:
1585 /* FIXME: This is a KLUDGE workaround for a parsing problem. There
1586 should be another level of INDIRECT_REF so that I don't have to do
1587 this. */
1588 if (TREE_TYPE (t) != NULL_TREE && NEXT_CODE (t) == POINTER_TYPE)
1589 {
1590 tree next = TREE_TYPE (TREE_TYPE (t));
1591
1592 while (TREE_CODE (next) == POINTER_TYPE)
1593 next = TREE_TYPE (next);
1594
1595 if (TREE_CODE (next) == FUNCTION_TYPE)
1596 {
1597 if (flags & TFF_EXPR_IN_PARENS)
1598 pp_cxx_left_paren (cxx_pp);
1599 pp_cxx_star (cxx_pp);
1600 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1601 if (flags & TFF_EXPR_IN_PARENS)
1602 pp_cxx_right_paren (cxx_pp);
1603 break;
1604 }
1605 /* Else fall through. */
1606 }
1607 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1608 break;
1609
1610 case NOP_EXPR:
1611 case CONVERT_EXPR:
1612 {
1613 tree op = TREE_OPERAND (t, 0);
1614
1615 if (!same_type_p (TREE_TYPE (op), TREE_TYPE (t)))
1616 {
1617 /* It is a cast, but we cannot tell whether it is a
1618 reinterpret or static cast. Use the C style notation. */
1619 if (flags & TFF_EXPR_IN_PARENS)
1620 pp_cxx_left_paren (cxx_pp);
1621 pp_cxx_left_paren (cxx_pp);
1622 dump_type (TREE_TYPE (t), flags);
1623 pp_cxx_right_paren (cxx_pp);
1624 dump_expr (op, flags | TFF_EXPR_IN_PARENS);
1625 if (flags & TFF_EXPR_IN_PARENS)
1626 pp_cxx_right_paren (cxx_pp);
1627 }
1628 else
1629 dump_expr (op, flags);
1630 break;
1631 }
1632
1633 case CONSTRUCTOR:
1634 if (TREE_TYPE (t) && TYPE_PTRMEMFUNC_P (TREE_TYPE (t)))
1635 {
1636 tree idx = build_ptrmemfunc_access_expr (t, pfn_identifier);
1637
1638 if (integer_zerop (idx))
1639 {
1640 /* A NULL pointer-to-member constant. */
1641 pp_cxx_left_paren (cxx_pp);
1642 pp_cxx_left_paren (cxx_pp);
1643 dump_type (TREE_TYPE (t), flags);
1644 pp_cxx_right_paren (cxx_pp);
1645 pp_character (cxx_pp, '0');
1646 pp_cxx_right_paren (cxx_pp);
1647 break;
1648 }
1649 else if (host_integerp (idx, 0))
1650 {
1651 tree virtuals;
1652 unsigned HOST_WIDE_INT n;
1653
1654 t = TREE_TYPE (TYPE_PTRMEMFUNC_FN_TYPE (TREE_TYPE (t)));
1655 t = TYPE_METHOD_BASETYPE (t);
1656 virtuals = BINFO_VIRTUALS (TYPE_BINFO (TYPE_MAIN_VARIANT (t)));
1657
1658 n = tree_low_cst (idx, 0);
1659
1660 /* Map vtable index back one, to allow for the null pointer to
1661 member. */
1662 --n;
1663
1664 while (n > 0 && virtuals)
1665 {
1666 --n;
1667 virtuals = TREE_CHAIN (virtuals);
1668 }
1669 if (virtuals)
1670 {
1671 dump_expr (BV_FN (virtuals),
1672 flags | TFF_EXPR_IN_PARENS);
1673 break;
1674 }
1675 }
1676 }
1677 if (TREE_TYPE (t) && EMPTY_CONSTRUCTOR_P (t))
1678 {
1679 dump_type (TREE_TYPE (t), 0);
1680 pp_cxx_left_paren (cxx_pp);
1681 pp_cxx_right_paren (cxx_pp);
1682 }
1683 else
1684 {
1685 pp_cxx_left_brace (cxx_pp);
1686 dump_expr_init_vec (CONSTRUCTOR_ELTS (t), flags);
1687 pp_cxx_right_brace (cxx_pp);
1688 }
1689
1690 break;
1691
1692 case OFFSET_REF:
1693 {
1694 tree ob = TREE_OPERAND (t, 0);
1695 if (is_dummy_object (ob))
1696 {
1697 t = TREE_OPERAND (t, 1);
1698 if (TREE_CODE (t) == FUNCTION_DECL)
1699 /* A::f */
1700 dump_expr (t, flags | TFF_EXPR_IN_PARENS);
1701 else if (BASELINK_P (t))
1702 dump_expr (OVL_CURRENT (BASELINK_FUNCTIONS (t)),
1703 flags | TFF_EXPR_IN_PARENS);
1704 else
1705 dump_decl (t, flags);
1706 }
1707 else
1708 {
1709 if (TREE_CODE (ob) == INDIRECT_REF)
1710 {
1711 dump_expr (TREE_OPERAND (ob, 0), flags | TFF_EXPR_IN_PARENS);
1712 pp_cxx_arrow (cxx_pp);
1713 pp_cxx_star (cxx_pp);
1714 }
1715 else
1716 {
1717 dump_expr (ob, flags | TFF_EXPR_IN_PARENS);
1718 pp_cxx_dot (cxx_pp);
1719 pp_cxx_star (cxx_pp);
1720 }
1721 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1722 }
1723 break;
1724 }
1725
1726 case TEMPLATE_PARM_INDEX:
1727 dump_decl (TEMPLATE_PARM_DECL (t), flags & ~TFF_DECL_SPECIFIERS);
1728 break;
1729
1730 case SCOPE_REF:
1731 pp_expression (cxx_pp, t);
1732 break;
1733
1734 case CAST_EXPR:
1735 if (TREE_OPERAND (t, 0) == NULL_TREE
1736 || TREE_CHAIN (TREE_OPERAND (t, 0)))
1737 {
1738 dump_type (TREE_TYPE (t), flags);
1739 pp_cxx_left_paren (cxx_pp);
1740 dump_expr_list (TREE_OPERAND (t, 0), flags);
1741 pp_cxx_right_paren (cxx_pp);
1742 }
1743 else
1744 {
1745 pp_cxx_left_paren (cxx_pp);
1746 dump_type (TREE_TYPE (t), flags);
1747 pp_cxx_right_paren (cxx_pp);
1748 pp_cxx_left_paren (cxx_pp);
1749 dump_expr_list (TREE_OPERAND (t, 0), flags);
1750 pp_cxx_right_paren (cxx_pp);
1751 }
1752 break;
1753
1754 case STATIC_CAST_EXPR:
1755 pp_cxx_identifier (cxx_pp, "static_cast");
1756 goto cast;
1757 case REINTERPRET_CAST_EXPR:
1758 pp_cxx_identifier (cxx_pp, "reinterpret_cast");
1759 goto cast;
1760 case CONST_CAST_EXPR:
1761 pp_cxx_identifier (cxx_pp, "const_cast");
1762 goto cast;
1763 case DYNAMIC_CAST_EXPR:
1764 pp_cxx_identifier (cxx_pp, "dynamic_cast");
1765 cast:
1766 pp_cxx_begin_template_argument_list (cxx_pp);
1767 dump_type (TREE_TYPE (t), flags);
1768 pp_cxx_end_template_argument_list (cxx_pp);
1769 pp_cxx_left_paren (cxx_pp);
1770 dump_expr (TREE_OPERAND (t, 0), flags);
1771 pp_cxx_right_paren (cxx_pp);
1772 break;
1773
1774 case ARROW_EXPR:
1775 dump_expr (TREE_OPERAND (t, 0), flags);
1776 pp_cxx_arrow (cxx_pp);
1777 break;
1778
1779 case SIZEOF_EXPR:
1780 case ALIGNOF_EXPR:
1781 if (TREE_CODE (t) == SIZEOF_EXPR)
1782 pp_cxx_identifier (cxx_pp, "sizeof");
1783 else
1784 {
1785 gcc_assert (TREE_CODE (t) == ALIGNOF_EXPR);
1786 pp_cxx_identifier (cxx_pp, "__alignof__");
1787 }
1788 pp_cxx_whitespace (cxx_pp);
1789 pp_cxx_left_paren (cxx_pp);
1790 if (TYPE_P (TREE_OPERAND (t, 0)))
1791 dump_type (TREE_OPERAND (t, 0), flags);
1792 else
1793 dump_expr (TREE_OPERAND (t, 0), flags);
1794 pp_cxx_right_paren (cxx_pp);
1795 break;
1796
1797 case REALPART_EXPR:
1798 case IMAGPART_EXPR:
1799 pp_cxx_identifier (cxx_pp, operator_name_info[TREE_CODE (t)].name);
1800 pp_cxx_whitespace (cxx_pp);
1801 dump_expr (TREE_OPERAND (t, 0), flags);
1802 break;
1803
1804 case DEFAULT_ARG:
1805 pp_identifier (cxx_pp, "<unparsed>");
1806 break;
1807
1808 case TRY_CATCH_EXPR:
1809 case WITH_CLEANUP_EXPR:
1810 case CLEANUP_POINT_EXPR:
1811 dump_expr (TREE_OPERAND (t, 0), flags);
1812 break;
1813
1814 case PSEUDO_DTOR_EXPR:
1815 dump_expr (TREE_OPERAND (t, 2), flags);
1816 pp_cxx_dot (cxx_pp);
1817 dump_type (TREE_OPERAND (t, 0), flags);
1818 pp_cxx_colon_colon (cxx_pp);
1819 pp_cxx_complement (cxx_pp);
1820 dump_type (TREE_OPERAND (t, 1), flags);
1821 break;
1822
1823 case TEMPLATE_ID_EXPR:
1824 dump_decl (t, flags);
1825 break;
1826
1827 case BIND_EXPR:
1828 case STMT_EXPR:
1829 case STATEMENT_LIST:
1830 /* We don't yet have a way of dumping statements in a
1831 human-readable format. */
1832 pp_string (cxx_pp, "({...})");
1833 break;
1834
1835 case LOOP_EXPR:
1836 pp_string (cxx_pp, "while (1) { ");
1837 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1838 pp_cxx_right_brace (cxx_pp);
1839 break;
1840
1841 case EXIT_EXPR:
1842 pp_string (cxx_pp, "if (");
1843 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1844 pp_string (cxx_pp, ") break; ");
1845 break;
1846
1847 case BASELINK:
1848 dump_expr (get_first_fn (t), flags & ~TFF_EXPR_IN_PARENS);
1849 break;
1850
1851 case EMPTY_CLASS_EXPR:
1852 dump_type (TREE_TYPE (t), flags);
1853 pp_cxx_left_paren (cxx_pp);
1854 pp_cxx_right_paren (cxx_pp);
1855 break;
1856
1857 case NON_DEPENDENT_EXPR:
1858 dump_expr (TREE_OPERAND (t, 0), flags);
1859 break;
1860
1861 /* This list is incomplete, but should suffice for now.
1862 It is very important that `sorry' does not call
1863 `report_error_function'. That could cause an infinite loop. */
1864 default:
1865 pp_unsupported_tree (cxx_pp, t);
1866 /* fall through to ERROR_MARK... */
1867 case ERROR_MARK:
1868 pp_identifier (cxx_pp, "<expression error>");
1869 break;
1870 }
1871 }
1872
1873 static void
1874 dump_binary_op (const char *opstring, tree t, int flags)
1875 {
1876 pp_cxx_left_paren (cxx_pp);
1877 dump_expr (TREE_OPERAND (t, 0), flags | TFF_EXPR_IN_PARENS);
1878 pp_cxx_whitespace (cxx_pp);
1879 if (opstring)
1880 pp_cxx_identifier (cxx_pp, opstring);
1881 else
1882 pp_identifier (cxx_pp, "<unknown operator>");
1883 pp_cxx_whitespace (cxx_pp);
1884 dump_expr (TREE_OPERAND (t, 1), flags | TFF_EXPR_IN_PARENS);
1885 pp_cxx_right_paren (cxx_pp);
1886 }
1887
1888 static void
1889 dump_unary_op (const char *opstring, tree t, int flags)
1890 {
1891 if (flags & TFF_EXPR_IN_PARENS)
1892 pp_cxx_left_paren (cxx_pp);
1893 pp_cxx_identifier (cxx_pp, opstring);
1894 dump_expr (TREE_OPERAND (t, 0), flags & ~TFF_EXPR_IN_PARENS);
1895 if (flags & TFF_EXPR_IN_PARENS)
1896 pp_cxx_right_paren (cxx_pp);
1897 }
1898
1899 static void
1900 reinit_cxx_pp (void)
1901 {
1902 pp_clear_output_area (cxx_pp);
1903 pp_base (cxx_pp)->padding = pp_none;
1904 pp_indentation (cxx_pp) = 0;
1905 pp_needs_newline (cxx_pp) = false;
1906 cxx_pp->enclosing_scope = 0;
1907 }
1908
1909
1910 /* Exported interface to stringifying types, exprs and decls under TFF_*
1911 control. */
1912
1913 const char *
1914 type_as_string (tree typ, int flags)
1915 {
1916 reinit_cxx_pp ();
1917 dump_type (typ, flags);
1918 return pp_formatted_text (cxx_pp);
1919 }
1920
1921 const char *
1922 expr_as_string (tree decl, int flags)
1923 {
1924 reinit_cxx_pp ();
1925 dump_expr (decl, flags);
1926 return pp_formatted_text (cxx_pp);
1927 }
1928
1929 const char *
1930 decl_as_string (tree decl, int flags)
1931 {
1932 reinit_cxx_pp ();
1933 dump_decl (decl, flags);
1934 return pp_formatted_text (cxx_pp);
1935 }
1936
1937 /* Generate the three forms of printable names for cxx_printable_name. */
1938
1939 const char *
1940 lang_decl_name (tree decl, int v)
1941 {
1942 if (v >= 2)
1943 return decl_as_string (decl, TFF_DECL_SPECIFIERS);
1944
1945 reinit_cxx_pp ();
1946 if (v == 1 && DECL_CLASS_SCOPE_P (decl))
1947 {
1948 dump_type (CP_DECL_CONTEXT (decl), TFF_PLAIN_IDENTIFIER);
1949 pp_cxx_colon_colon (cxx_pp);
1950 }
1951
1952 if (TREE_CODE (decl) == FUNCTION_DECL)
1953 dump_function_name (decl, TFF_PLAIN_IDENTIFIER);
1954 else
1955 dump_decl (DECL_NAME (decl), TFF_PLAIN_IDENTIFIER);
1956
1957 return pp_formatted_text (cxx_pp);
1958 }
1959
1960 /* Return the location of a tree passed to %+ formats. */
1961
1962 static location_t
1963 location_of (tree t)
1964 {
1965 if (TREE_CODE (t) == PARM_DECL && DECL_CONTEXT (t))
1966 t = DECL_CONTEXT (t);
1967 else if (TYPE_P (t))
1968 t = TYPE_MAIN_DECL (t);
1969 else if (TREE_CODE (t) == OVERLOAD)
1970 t = OVL_FUNCTION (t);
1971
1972 return DECL_SOURCE_LOCATION (t);
1973 }
1974
1975 /* Now the interfaces from error et al to dump_type et al. Each takes an
1976 on/off VERBOSE flag and supply the appropriate TFF_ flags to a dump_
1977 function. */
1978
1979 static const char *
1980 decl_to_string (tree decl, int verbose)
1981 {
1982 int flags = 0;
1983
1984 if (TREE_CODE (decl) == TYPE_DECL || TREE_CODE (decl) == RECORD_TYPE
1985 || TREE_CODE (decl) == UNION_TYPE || TREE_CODE (decl) == ENUMERAL_TYPE)
1986 flags = TFF_CLASS_KEY_OR_ENUM;
1987 if (verbose)
1988 flags |= TFF_DECL_SPECIFIERS;
1989 else if (TREE_CODE (decl) == FUNCTION_DECL)
1990 flags |= TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE;
1991 flags |= TFF_TEMPLATE_HEADER;
1992
1993 reinit_cxx_pp ();
1994 dump_decl (decl, flags);
1995 return pp_formatted_text (cxx_pp);
1996 }
1997
1998 static const char *
1999 expr_to_string (tree decl)
2000 {
2001 reinit_cxx_pp ();
2002 dump_expr (decl, 0);
2003 return pp_formatted_text (cxx_pp);
2004 }
2005
2006 static const char *
2007 fndecl_to_string (tree fndecl, int verbose)
2008 {
2009 int flags;
2010
2011 flags = TFF_EXCEPTION_SPECIFICATION | TFF_DECL_SPECIFIERS;
2012 if (verbose)
2013 flags |= TFF_FUNCTION_DEFAULT_ARGUMENTS;
2014 reinit_cxx_pp ();
2015 dump_decl (fndecl, flags);
2016 return pp_formatted_text (cxx_pp);
2017 }
2018
2019
2020 static const char *
2021 code_to_string (enum tree_code c)
2022 {
2023 return tree_code_name [c];
2024 }
2025
2026 const char *
2027 language_to_string (enum languages c)
2028 {
2029 switch (c)
2030 {
2031 case lang_c:
2032 return "C";
2033
2034 case lang_cplusplus:
2035 return "C++";
2036
2037 case lang_java:
2038 return "Java";
2039
2040 default:
2041 gcc_unreachable ();
2042 }
2043 return 0;
2044 }
2045
2046 /* Return the proper printed version of a parameter to a C++ function. */
2047
2048 static const char *
2049 parm_to_string (int p)
2050 {
2051 reinit_cxx_pp ();
2052 if (p < 0)
2053 pp_string (cxx_pp, "'this'");
2054 else
2055 pp_decimal_int (cxx_pp, p + 1);
2056 return pp_formatted_text (cxx_pp);
2057 }
2058
2059 static const char *
2060 op_to_string (enum tree_code p)
2061 {
2062 tree id = operator_name_info[(int) p].identifier;
2063 return id ? IDENTIFIER_POINTER (id) : "<unknown>";
2064 }
2065
2066 static const char *
2067 type_to_string (tree typ, int verbose)
2068 {
2069 int flags = 0;
2070 if (verbose)
2071 flags |= TFF_CLASS_KEY_OR_ENUM;
2072 flags |= TFF_TEMPLATE_HEADER;
2073
2074 reinit_cxx_pp ();
2075 dump_type (typ, flags);
2076 return pp_formatted_text (cxx_pp);
2077 }
2078
2079 static const char *
2080 assop_to_string (enum tree_code p)
2081 {
2082 tree id = assignment_operator_name_info[(int) p].identifier;
2083 return id ? IDENTIFIER_POINTER (id) : "{unknown}";
2084 }
2085
2086 static const char *
2087 args_to_string (tree p, int verbose)
2088 {
2089 int flags = 0;
2090 if (verbose)
2091 flags |= TFF_CLASS_KEY_OR_ENUM;
2092
2093 if (p == NULL_TREE)
2094 return "";
2095
2096 if (TYPE_P (TREE_VALUE (p)))
2097 return type_as_string (p, flags);
2098
2099 reinit_cxx_pp ();
2100 for (; p; p = TREE_CHAIN (p))
2101 {
2102 if (TREE_VALUE (p) == null_node)
2103 pp_cxx_identifier (cxx_pp, "NULL");
2104 else
2105 dump_type (error_type (TREE_VALUE (p)), flags);
2106 if (TREE_CHAIN (p))
2107 pp_separate_with_comma (cxx_pp);
2108 }
2109 return pp_formatted_text (cxx_pp);
2110 }
2111
2112 static const char *
2113 cv_to_string (tree p, int v)
2114 {
2115 reinit_cxx_pp ();
2116 pp_base (cxx_pp)->padding = v ? pp_before : pp_none;
2117 pp_cxx_cv_qualifier_seq (cxx_pp, p);
2118 return pp_formatted_text (cxx_pp);
2119 }
2120
2121 /* Langhook for print_error_function. */
2122 void
2123 cxx_print_error_function (diagnostic_context *context, const char *file)
2124 {
2125 lhd_print_error_function (context, file);
2126 pp_base_set_prefix (context->printer, file);
2127 maybe_print_instantiation_context (context);
2128 }
2129
2130 static void
2131 cp_diagnostic_starter (diagnostic_context *context,
2132 diagnostic_info *diagnostic)
2133 {
2134 diagnostic_report_current_module (context);
2135 cp_print_error_function (context, diagnostic);
2136 maybe_print_instantiation_context (context);
2137 pp_base_set_prefix (context->printer, diagnostic_build_prefix (diagnostic));
2138 }
2139
2140 static void
2141 cp_diagnostic_finalizer (diagnostic_context *context,
2142 diagnostic_info *diagnostic ATTRIBUTE_UNUSED)
2143 {
2144 pp_base_destroy_prefix (context->printer);
2145 }
2146
2147 /* Print current function onto BUFFER, in the process of reporting
2148 a diagnostic message. Called from cp_diagnostic_starter. */
2149 static void
2150 cp_print_error_function (diagnostic_context *context,
2151 diagnostic_info *diagnostic)
2152 {
2153 if (diagnostic_last_function_changed (context))
2154 {
2155 const char *old_prefix = context->printer->prefix;
2156 const char *file = LOCATION_FILE (diagnostic->location);
2157 char *new_prefix = file ? file_name_as_prefix (file) : NULL;
2158
2159 pp_base_set_prefix (context->printer, new_prefix);
2160
2161 if (current_function_decl == NULL)
2162 pp_base_string (context->printer, "At global scope:");
2163 else
2164 pp_printf (context->printer, "In %s %qs:",
2165 function_category (current_function_decl),
2166 cxx_printable_name (current_function_decl, 2));
2167 pp_base_newline (context->printer);
2168
2169 diagnostic_set_last_function (context);
2170 pp_base_destroy_prefix (context->printer);
2171 context->printer->prefix = old_prefix;
2172 }
2173 }
2174
2175 /* Returns a description of FUNCTION using standard terminology. */
2176 static const char *
2177 function_category (tree fn)
2178 {
2179 if (DECL_FUNCTION_MEMBER_P (fn))
2180 {
2181 if (DECL_STATIC_FUNCTION_P (fn))
2182 return "static member function";
2183 else if (DECL_COPY_CONSTRUCTOR_P (fn))
2184 return "copy constructor";
2185 else if (DECL_CONSTRUCTOR_P (fn))
2186 return "constructor";
2187 else if (DECL_DESTRUCTOR_P (fn))
2188 return "destructor";
2189 else
2190 return "member function";
2191 }
2192 else
2193 return "function";
2194 }
2195
2196 /* Report the full context of a current template instantiation,
2197 onto BUFFER. */
2198 static void
2199 print_instantiation_full_context (diagnostic_context *context)
2200 {
2201 tree p = current_instantiation ();
2202 location_t location = input_location;
2203
2204 if (p)
2205 {
2206 if (current_function_decl != TINST_DECL (p)
2207 && current_function_decl != NULL_TREE)
2208 /* We can get here during the processing of some synthesized
2209 method. Then, TINST_DECL (p) will be the function that's causing
2210 the synthesis. */
2211 ;
2212 else
2213 {
2214 if (current_function_decl == TINST_DECL (p))
2215 /* Avoid redundancy with the "In function" line. */;
2216 else
2217 pp_verbatim (context->printer,
2218 "%s: In instantiation of %qs:\n",
2219 LOCATION_FILE (location),
2220 decl_as_string (TINST_DECL (p),
2221 TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE));
2222
2223 location = TINST_LOCATION (p);
2224 p = TREE_CHAIN (p);
2225 }
2226 }
2227
2228 print_instantiation_partial_context (context, p, location);
2229 }
2230
2231 /* Same as above but less verbose. */
2232 static void
2233 print_instantiation_partial_context (diagnostic_context *context,
2234 tree t, location_t loc)
2235 {
2236 expanded_location xloc;
2237 for (; ; t = TREE_CHAIN (t))
2238 {
2239 xloc = expand_location (loc);
2240 if (t == NULL_TREE)
2241 break;
2242 pp_verbatim (context->printer, "%s:%d: instantiated from %qs\n",
2243 xloc.file, xloc.line,
2244 decl_as_string (TINST_DECL (t),
2245 TFF_DECL_SPECIFIERS | TFF_RETURN_TYPE));
2246 loc = TINST_LOCATION (t);
2247 }
2248 pp_verbatim (context->printer, "%s:%d: instantiated from here",
2249 xloc.file, xloc.line);
2250 pp_base_newline (context->printer);
2251 }
2252
2253 /* Called from cp_thing to print the template context for an error. */
2254 static void
2255 maybe_print_instantiation_context (diagnostic_context *context)
2256 {
2257 if (!problematic_instantiation_changed () || current_instantiation () == 0)
2258 return;
2259
2260 record_last_problematic_instantiation ();
2261 print_instantiation_full_context (context);
2262 }
2263
2264 /* Report the bare minimum context of a template instantiation. */
2265 void
2266 print_instantiation_context (void)
2267 {
2268 print_instantiation_partial_context
2269 (global_dc, current_instantiation (), input_location);
2270 diagnostic_flush_buffer (global_dc);
2271 }
2272 \f
2273 /* Called from output_format -- during diagnostic message processing --
2274 to handle C++ specific format specifier with the following meanings:
2275 %A function argument-list.
2276 %C tree code.
2277 %D declaration.
2278 %E expression.
2279 %F function declaration.
2280 %L language as used in extern "lang".
2281 %O binary operator.
2282 %P function parameter whose position is indicated by an integer.
2283 %Q assignment operator.
2284 %T type.
2285 %V cv-qualifier. */
2286 static bool
2287 cp_printer (pretty_printer *pp, text_info *text, const char *spec,
2288 int precision, bool wide, bool set_locus, bool verbose)
2289 {
2290 const char *result;
2291 tree t = NULL;
2292 #define next_tree (t = va_arg (*text->args_ptr, tree))
2293 #define next_tcode va_arg (*text->args_ptr, enum tree_code)
2294 #define next_lang va_arg (*text->args_ptr, enum languages)
2295 #define next_int va_arg (*text->args_ptr, int)
2296
2297 if (precision != 0 || wide)
2298 return false;
2299
2300 if (text->locus == NULL)
2301 set_locus = false;
2302
2303 switch (*spec)
2304 {
2305 case 'A': result = args_to_string (next_tree, verbose); break;
2306 case 'C': result = code_to_string (next_tcode); break;
2307 case 'D': result = decl_to_string (next_tree, verbose); break;
2308 case 'E': result = expr_to_string (next_tree); break;
2309 case 'F': result = fndecl_to_string (next_tree, verbose); break;
2310 case 'L': result = language_to_string (next_lang); break;
2311 case 'O': result = op_to_string (next_tcode); break;
2312 case 'P': result = parm_to_string (next_int); break;
2313 case 'Q': result = assop_to_string (next_tcode); break;
2314 case 'T': result = type_to_string (next_tree, verbose); break;
2315 case 'V': result = cv_to_string (next_tree, verbose); break;
2316
2317 default:
2318 return false;
2319 }
2320
2321 pp_base_string (pp, result);
2322 if (set_locus && t != NULL)
2323 *text->locus = location_of (t);
2324 return true;
2325 #undef next_tree
2326 #undef next_tcode
2327 #undef next_lang
2328 #undef next_int
2329 }
2330 \f
2331 /* Callback from cpp_error for PFILE to print diagnostics arising from
2332 interpreting strings. The diagnostic is of type LEVEL; MSG is the
2333 translated message and AP the arguments. */
2334
2335 void
2336 cp_cpp_error (cpp_reader *pfile ATTRIBUTE_UNUSED, int level,
2337 const char *msg, va_list *ap)
2338 {
2339 diagnostic_info diagnostic;
2340 diagnostic_t dlevel;
2341 switch (level)
2342 {
2343 case CPP_DL_WARNING:
2344 case CPP_DL_WARNING_SYSHDR:
2345 dlevel = DK_WARNING;
2346 break;
2347 case CPP_DL_PEDWARN:
2348 dlevel = pedantic_error_kind ();
2349 break;
2350 case CPP_DL_ERROR:
2351 dlevel = DK_ERROR;
2352 break;
2353 case CPP_DL_ICE:
2354 dlevel = DK_ICE;
2355 break;
2356 default:
2357 gcc_unreachable ();
2358 }
2359 diagnostic_set_info_translated (&diagnostic, msg, ap,
2360 input_location, dlevel);
2361 report_diagnostic (&diagnostic);
2362 }
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