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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
8ad1d56d PH |
2 | |
3 | // This file is part of GCC. | |
4 | ||
5 | // GCC is free software; you can redistribute it and/or modify it under | |
6 | // the terms of the GNU General Public License as published by the Free | |
7 | // Software Foundation; either version 3, or (at your option) any later | |
8 | // version. | |
9 | ||
10 | // GCC is distributed in the hope that it will be useful, but WITHOUT ANY | |
11 | // WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
12 | // FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
13 | // for more details. | |
14 | ||
15 | // You should have received a copy of the GNU General Public License | |
16 | // along with GCC; see the file COPYING3. If not see | |
17 | // <http://www.gnu.org/licenses/>. | |
18 | ||
19 | #ifndef RUST_HIR_ITEM_H | |
20 | #define RUST_HIR_ITEM_H | |
21 | ||
22 | #include "rust-abi.h" | |
23 | #include "rust-ast-full-decls.h" | |
24 | #include "rust-common.h" | |
25 | #include "rust-hir.h" | |
26 | #include "rust-hir-path.h" | |
27 | ||
28 | namespace Rust { | |
29 | namespace HIR { | |
30 | // forward decls | |
31 | class BlockExpr; | |
32 | class TypePath; | |
33 | ||
34 | // A type generic parameter (as opposed to a lifetime generic parameter) | |
35 | class TypeParam : public GenericParam | |
36 | { | |
37 | // bool has_outer_attribute; | |
38 | // std::unique_ptr<Attribute> outer_attr; | |
39 | AST::Attribute outer_attr; | |
40 | ||
41 | Identifier type_representation; | |
42 | ||
43 | // bool has_type_param_bounds; | |
44 | // TypeParamBounds type_param_bounds; | |
45 | std::vector<std::unique_ptr<TypeParamBound>> | |
46 | type_param_bounds; // inlined form | |
47 | ||
48 | // bool has_type; | |
49 | std::unique_ptr<Type> type; | |
50 | ||
51 | Location locus; | |
52 | ||
53 | public: | |
54 | // Returns whether the type of the type param has been specified. | |
55 | bool has_type () const { return type != nullptr; } | |
56 | ||
57 | // Returns whether the type param has type param bounds. | |
58 | bool has_type_param_bounds () const { return !type_param_bounds.empty (); } | |
59 | ||
60 | // Returns whether the type param has an outer attribute. | |
61 | bool has_outer_attribute () const { return !outer_attr.is_empty (); } | |
62 | ||
63 | TypeParam (Analysis::NodeMapping mappings, Identifier type_representation, | |
64 | Location locus = Location (), | |
65 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds | |
66 | = std::vector<std::unique_ptr<TypeParamBound>> (), | |
67 | std::unique_ptr<Type> type = nullptr, | |
68 | AST::Attribute outer_attr = AST::Attribute::create_empty ()) | |
69 | : GenericParam (mappings), outer_attr (std::move (outer_attr)), | |
70 | type_representation (std::move (type_representation)), | |
71 | type_param_bounds (std::move (type_param_bounds)), | |
72 | type (std::move (type)), locus (locus) | |
73 | {} | |
74 | ||
75 | // Copy constructor uses clone | |
76 | TypeParam (TypeParam const &other) | |
77 | : GenericParam (other.mappings), outer_attr (other.outer_attr), | |
78 | type_representation (other.type_representation), locus (other.locus) | |
79 | { | |
80 | // guard to prevent null pointer dereference | |
81 | if (other.type != nullptr) | |
82 | type = other.type->clone_type (); | |
83 | ||
84 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
85 | for (const auto &e : other.type_param_bounds) | |
86 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
87 | } | |
88 | ||
89 | // Overloaded assignment operator to clone | |
90 | TypeParam &operator= (TypeParam const &other) | |
91 | { | |
92 | type_representation = other.type_representation; | |
93 | outer_attr = other.outer_attr; | |
94 | locus = other.locus; | |
95 | mappings = other.mappings; | |
96 | ||
97 | // guard to prevent null pointer dereference | |
98 | if (other.type != nullptr) | |
99 | type = other.type->clone_type (); | |
100 | else | |
101 | type = nullptr; | |
102 | ||
103 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
104 | for (const auto &e : other.type_param_bounds) | |
105 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
106 | ||
107 | return *this; | |
108 | } | |
109 | // move constructors | |
110 | TypeParam (TypeParam &&other) = default; | |
111 | TypeParam &operator= (TypeParam &&other) = default; | |
112 | ||
113 | std::string as_string () const override; | |
114 | ||
115 | Location get_locus () const override final { return locus; } | |
116 | ||
117 | void accept_vis (HIRFullVisitor &vis) override; | |
118 | ||
119 | Identifier get_type_representation () const { return type_representation; } | |
120 | ||
121 | std::unique_ptr<Type> &get_type () | |
122 | { | |
123 | rust_assert (type != nullptr); | |
124 | return type; | |
125 | } | |
126 | ||
127 | Analysis::NodeMapping get_type_mappings () const | |
128 | { | |
129 | rust_assert (type != nullptr); | |
130 | return type->get_mappings (); | |
131 | } | |
132 | ||
133 | std::vector<std::unique_ptr<TypeParamBound>> &get_type_param_bounds () | |
134 | { | |
135 | return type_param_bounds; | |
136 | } | |
137 | ||
138 | protected: | |
139 | // Clone function implementation as (not pure) virtual method | |
140 | TypeParam *clone_generic_param_impl () const override | |
141 | { | |
142 | return new TypeParam (*this); | |
143 | } | |
144 | }; | |
145 | ||
146 | /* "where" clause item base. Abstract - use LifetimeWhereClauseItem, | |
147 | * TypeBoundWhereClauseItem */ | |
148 | class WhereClauseItem | |
149 | { | |
150 | public: | |
151 | enum ItemType | |
152 | { | |
153 | LIFETIME, | |
154 | TYPE_BOUND, | |
155 | }; | |
156 | ||
157 | virtual ~WhereClauseItem () {} | |
158 | ||
159 | // Unique pointer custom clone function | |
160 | std::unique_ptr<WhereClauseItem> clone_where_clause_item () const | |
161 | { | |
162 | return std::unique_ptr<WhereClauseItem> (clone_where_clause_item_impl ()); | |
163 | } | |
164 | ||
165 | virtual std::string as_string () const = 0; | |
166 | ||
167 | virtual void accept_vis (HIRFullVisitor &vis) = 0; | |
168 | ||
169 | virtual Analysis::NodeMapping get_mappings () const = 0; | |
170 | ||
171 | virtual ItemType get_item_type () const = 0; | |
172 | ||
173 | protected: | |
174 | // Clone function implementation as pure virtual method | |
175 | virtual WhereClauseItem *clone_where_clause_item_impl () const = 0; | |
176 | }; | |
177 | ||
178 | // A lifetime where clause item | |
179 | class LifetimeWhereClauseItem : public WhereClauseItem | |
180 | { | |
181 | Lifetime lifetime; | |
182 | std::vector<Lifetime> lifetime_bounds; | |
183 | Location locus; | |
184 | Analysis::NodeMapping mappings; | |
185 | ||
186 | public: | |
187 | LifetimeWhereClauseItem (Analysis::NodeMapping mappings, Lifetime lifetime, | |
188 | std::vector<Lifetime> lifetime_bounds, | |
189 | Location locus) | |
190 | : lifetime (std::move (lifetime)), | |
191 | lifetime_bounds (std::move (lifetime_bounds)), locus (locus), | |
192 | mappings (std::move (mappings)) | |
193 | {} | |
194 | ||
195 | std::string as_string () const override; | |
196 | ||
197 | void accept_vis (HIRFullVisitor &vis) override; | |
198 | ||
199 | Lifetime &get_lifetime () { return lifetime; } | |
200 | ||
201 | std::vector<Lifetime> &get_lifetime_bounds () { return lifetime_bounds; } | |
202 | ||
203 | Analysis::NodeMapping get_mappings () const override final | |
204 | { | |
205 | return mappings; | |
206 | }; | |
207 | ||
208 | ItemType get_item_type () const override final | |
209 | { | |
210 | return WhereClauseItem::ItemType::LIFETIME; | |
211 | } | |
212 | ||
213 | protected: | |
214 | // Clone function implementation as (not pure) virtual method | |
215 | LifetimeWhereClauseItem *clone_where_clause_item_impl () const override | |
216 | { | |
217 | return new LifetimeWhereClauseItem (*this); | |
218 | } | |
219 | }; | |
220 | ||
221 | // A type bound where clause item | |
222 | class TypeBoundWhereClauseItem : public WhereClauseItem | |
223 | { | |
224 | std::vector<LifetimeParam> for_lifetimes; | |
225 | std::unique_ptr<Type> bound_type; | |
226 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds; | |
227 | Analysis::NodeMapping mappings; | |
228 | Location locus; | |
229 | ||
230 | public: | |
231 | // Returns whether the item has ForLifetimes | |
232 | bool has_for_lifetimes () const { return !for_lifetimes.empty (); } | |
233 | ||
234 | // Returns whether the item has type param bounds | |
235 | bool has_type_param_bounds () const { return !type_param_bounds.empty (); } | |
236 | ||
237 | TypeBoundWhereClauseItem ( | |
238 | Analysis::NodeMapping mappings, std::vector<LifetimeParam> for_lifetimes, | |
239 | std::unique_ptr<Type> bound_type, | |
240 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds, | |
241 | Location locus) | |
242 | : for_lifetimes (std::move (for_lifetimes)), | |
243 | bound_type (std::move (bound_type)), | |
244 | type_param_bounds (std::move (type_param_bounds)), | |
245 | mappings (std::move (mappings)), locus (locus) | |
246 | {} | |
247 | ||
248 | // Copy constructor requires clone | |
249 | TypeBoundWhereClauseItem (TypeBoundWhereClauseItem const &other) | |
250 | : for_lifetimes (other.for_lifetimes), | |
251 | bound_type (other.bound_type->clone_type ()), mappings (other.mappings) | |
252 | { | |
253 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
254 | for (const auto &e : other.type_param_bounds) | |
255 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
256 | } | |
257 | ||
258 | // Overload assignment operator to clone | |
259 | TypeBoundWhereClauseItem &operator= (TypeBoundWhereClauseItem const &other) | |
260 | { | |
261 | mappings = other.mappings; | |
262 | for_lifetimes = other.for_lifetimes; | |
263 | bound_type = other.bound_type->clone_type (); | |
264 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
265 | for (const auto &e : other.type_param_bounds) | |
266 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
267 | ||
268 | return *this; | |
269 | } | |
270 | ||
271 | // move constructors | |
272 | TypeBoundWhereClauseItem (TypeBoundWhereClauseItem &&other) = default; | |
273 | TypeBoundWhereClauseItem &operator= (TypeBoundWhereClauseItem &&other) | |
274 | = default; | |
275 | ||
276 | std::string as_string () const override; | |
277 | ||
278 | void accept_vis (HIRFullVisitor &vis) override; | |
279 | ||
280 | std::vector<LifetimeParam> &get_for_lifetimes () { return for_lifetimes; } | |
281 | ||
282 | std::unique_ptr<Type> &get_bound_type () { return bound_type; } | |
283 | ||
284 | std::vector<std::unique_ptr<TypeParamBound>> &get_type_param_bounds () | |
285 | { | |
286 | return type_param_bounds; | |
287 | } | |
288 | ||
289 | Analysis::NodeMapping get_mappings () const override final | |
290 | { | |
291 | return mappings; | |
292 | }; | |
293 | ||
294 | ItemType get_item_type () const override final | |
295 | { | |
296 | return WhereClauseItem::ItemType::TYPE_BOUND; | |
297 | } | |
298 | ||
299 | protected: | |
300 | // Clone function implementation as (not pure) virtual method | |
301 | TypeBoundWhereClauseItem *clone_where_clause_item_impl () const override | |
302 | { | |
303 | return new TypeBoundWhereClauseItem (*this); | |
304 | } | |
305 | }; | |
306 | ||
307 | // A where clause | |
308 | struct WhereClause | |
309 | { | |
310 | private: | |
311 | std::vector<std::unique_ptr<WhereClauseItem>> where_clause_items; | |
312 | ||
313 | // should this store location info? | |
314 | ||
315 | public: | |
316 | WhereClause (std::vector<std::unique_ptr<WhereClauseItem>> where_clause_items) | |
317 | : where_clause_items (std::move (where_clause_items)) | |
318 | {} | |
319 | ||
320 | // copy constructor with vector clone | |
321 | WhereClause (WhereClause const &other) | |
322 | { | |
323 | where_clause_items.reserve (other.where_clause_items.size ()); | |
324 | for (const auto &e : other.where_clause_items) | |
325 | where_clause_items.push_back (e->clone_where_clause_item ()); | |
326 | } | |
327 | ||
328 | // overloaded assignment operator with vector clone | |
329 | WhereClause &operator= (WhereClause const &other) | |
330 | { | |
331 | where_clause_items.reserve (other.where_clause_items.size ()); | |
332 | for (const auto &e : other.where_clause_items) | |
333 | where_clause_items.push_back (e->clone_where_clause_item ()); | |
334 | ||
335 | return *this; | |
336 | } | |
337 | ||
338 | // move constructors | |
339 | WhereClause (WhereClause &&other) = default; | |
340 | WhereClause &operator= (WhereClause &&other) = default; | |
341 | ||
342 | // Creates a WhereClause with no items. | |
343 | static WhereClause create_empty () | |
344 | { | |
345 | return WhereClause (std::vector<std::unique_ptr<WhereClauseItem>> ()); | |
346 | } | |
347 | ||
348 | // Returns whether the WhereClause has no items. | |
349 | bool is_empty () const { return where_clause_items.empty (); } | |
350 | ||
351 | std::string as_string () const; | |
352 | ||
353 | std::vector<std::unique_ptr<WhereClauseItem>> &get_items () | |
354 | { | |
355 | return where_clause_items; | |
356 | } | |
357 | const std::vector<std::unique_ptr<WhereClauseItem>> &get_items () const | |
358 | { | |
359 | return where_clause_items; | |
360 | } | |
361 | }; | |
362 | ||
363 | // A self parameter in a method | |
364 | struct SelfParam | |
365 | { | |
366 | public: | |
367 | enum ImplicitSelfKind | |
368 | { | |
369 | IMM, // self | |
370 | MUT, // mut self | |
371 | IMM_REF, // &self | |
372 | MUT_REF, // &mut self | |
373 | NONE | |
374 | }; | |
375 | ||
376 | private: | |
377 | ImplicitSelfKind self_kind; | |
378 | Lifetime lifetime; | |
379 | std::unique_ptr<Type> type; | |
380 | Location locus; | |
381 | Analysis::NodeMapping mappings; | |
382 | ||
383 | SelfParam (Analysis::NodeMapping mappings, ImplicitSelfKind self_kind, | |
384 | Lifetime lifetime, Type *type) | |
385 | : self_kind (self_kind), lifetime (std::move (lifetime)), type (type), | |
386 | mappings (mappings) | |
387 | {} | |
388 | ||
389 | public: | |
390 | // Type-based self parameter (not ref, no lifetime) | |
391 | SelfParam (Analysis::NodeMapping mappings, std::unique_ptr<Type> type, | |
392 | bool is_mut, Location locus) | |
393 | : self_kind (is_mut ? ImplicitSelfKind::MUT : ImplicitSelfKind::IMM), | |
394 | lifetime ( | |
395 | Lifetime (mappings, AST::Lifetime::LifetimeType::NAMED, "", locus)), | |
396 | type (std::move (type)), locus (locus), mappings (mappings) | |
397 | {} | |
398 | ||
399 | // Lifetime-based self parameter (is ref, no type) | |
400 | SelfParam (Analysis::NodeMapping mappings, Lifetime lifetime, bool is_mut, | |
401 | Location locus) | |
402 | : self_kind (is_mut ? ImplicitSelfKind::MUT_REF | |
403 | : ImplicitSelfKind::IMM_REF), | |
404 | lifetime (std::move (lifetime)), locus (locus), mappings (mappings) | |
405 | {} | |
406 | ||
407 | // Copy constructor requires clone | |
408 | SelfParam (SelfParam const &other) | |
409 | : self_kind (other.self_kind), lifetime (other.lifetime), | |
410 | locus (other.locus), mappings (other.mappings) | |
411 | { | |
412 | if (other.type != nullptr) | |
413 | type = other.type->clone_type (); | |
414 | } | |
415 | ||
416 | // Overload assignment operator to use clone | |
417 | SelfParam &operator= (SelfParam const &other) | |
418 | { | |
419 | if (other.type != nullptr) | |
420 | type = other.type->clone_type (); | |
421 | ||
422 | self_kind = other.self_kind; | |
423 | lifetime = other.lifetime; | |
424 | locus = other.locus; | |
425 | mappings = other.mappings; | |
426 | ||
427 | return *this; | |
428 | } | |
429 | ||
430 | // move constructors | |
431 | SelfParam (SelfParam &&other) = default; | |
432 | SelfParam &operator= (SelfParam &&other) = default; | |
433 | ||
434 | static SelfParam error () | |
435 | { | |
436 | return SelfParam (Analysis::NodeMapping::get_error (), | |
437 | ImplicitSelfKind::NONE, Lifetime::error (), nullptr); | |
438 | } | |
439 | ||
440 | // Returns whether the self-param has a type field. | |
441 | bool has_type () const { return type != nullptr; } | |
442 | ||
443 | // Returns whether the self-param has a valid lifetime. | |
444 | bool has_lifetime () const { return !lifetime.is_error (); } | |
445 | ||
446 | // Returns whether the self-param is in an error state. | |
447 | bool is_error () const { return self_kind == ImplicitSelfKind::NONE; } | |
448 | ||
449 | std::string as_string () const; | |
450 | ||
451 | Location get_locus () const { return locus; } | |
452 | ||
453 | ImplicitSelfKind get_self_kind () const { return self_kind; } | |
454 | ||
455 | std::unique_ptr<Type> &get_type () | |
456 | { | |
457 | rust_assert (has_type ()); | |
458 | return type; | |
459 | } | |
460 | ||
461 | Analysis::NodeMapping get_mappings () { return mappings; } | |
462 | ||
463 | Mutability get_mut () const | |
464 | { | |
465 | return (self_kind == ImplicitSelfKind::MUT | |
466 | || self_kind == ImplicitSelfKind::MUT_REF) | |
467 | ? Mutability::Mut | |
468 | : Mutability::Imm; | |
469 | } | |
470 | ||
471 | bool is_mut () const | |
472 | { | |
473 | return self_kind == ImplicitSelfKind::MUT | |
474 | || self_kind == ImplicitSelfKind::MUT_REF; | |
475 | } | |
476 | ||
477 | bool is_ref () const | |
478 | { | |
479 | return self_kind == ImplicitSelfKind::IMM_REF | |
480 | || self_kind == ImplicitSelfKind::MUT_REF; | |
481 | } | |
482 | }; | |
483 | ||
484 | // Qualifiers for function, i.e. const, unsafe, extern etc. | |
485 | struct FunctionQualifiers | |
486 | { | |
487 | private: | |
488 | AsyncConstStatus const_status; | |
489 | Unsafety unsafety; | |
490 | bool has_extern; | |
491 | ABI abi; | |
492 | ||
493 | public: | |
494 | FunctionQualifiers (AsyncConstStatus const_status, Unsafety unsafety, | |
495 | bool has_extern, ABI abi) | |
496 | : const_status (const_status), unsafety (unsafety), has_extern (has_extern), | |
497 | abi (abi) | |
498 | {} | |
499 | ||
500 | std::string as_string () const; | |
501 | ||
502 | AsyncConstStatus get_status () const { return const_status; } | |
503 | ||
504 | bool is_const () const { return const_status == AsyncConstStatus::CONST_FN; } | |
505 | bool is_unsafe () const { return unsafety == Unsafety::Unsafe; } | |
506 | ||
507 | ABI get_abi () const { return abi; } | |
508 | }; | |
509 | ||
510 | // A function parameter | |
511 | struct FunctionParam | |
512 | { | |
513 | std::unique_ptr<Pattern> param_name; | |
514 | std::unique_ptr<Type> type; | |
515 | Location locus; | |
516 | Analysis::NodeMapping mappings; | |
517 | ||
518 | public: | |
519 | FunctionParam (Analysis::NodeMapping mappings, | |
520 | std::unique_ptr<Pattern> param_name, | |
521 | std::unique_ptr<Type> param_type, Location locus) | |
522 | : param_name (std::move (param_name)), type (std::move (param_type)), | |
523 | locus (locus), mappings (mappings) | |
524 | {} | |
525 | ||
526 | // Copy constructor uses clone | |
527 | FunctionParam (FunctionParam const &other) | |
528 | : param_name (other.param_name->clone_pattern ()), | |
529 | type (other.type->clone_type ()), locus (other.locus), | |
530 | mappings (other.mappings) | |
531 | {} | |
532 | ||
533 | // Overload assignment operator to use clone | |
534 | FunctionParam &operator= (FunctionParam const &other) | |
535 | { | |
536 | param_name = other.param_name->clone_pattern (); | |
537 | type = other.type->clone_type (); | |
538 | locus = other.locus; | |
539 | mappings = other.mappings; | |
540 | ||
541 | return *this; | |
542 | } | |
543 | ||
544 | // move constructors | |
545 | FunctionParam (FunctionParam &&other) = default; | |
546 | FunctionParam &operator= (FunctionParam &&other) = default; | |
547 | ||
548 | std::string as_string () const; | |
549 | ||
550 | Location get_locus () const { return locus; } | |
551 | ||
552 | Pattern *get_param_name () { return param_name.get (); } | |
553 | ||
554 | Type *get_type () { return type.get (); } | |
555 | ||
556 | const Analysis::NodeMapping &get_mappings () const { return mappings; } | |
557 | }; | |
558 | ||
559 | // Visibility of an item | |
560 | struct Visibility | |
561 | { | |
562 | public: | |
563 | enum VisType | |
564 | { | |
565 | PRIVATE, | |
566 | PUBLIC, | |
567 | RESTRICTED, | |
568 | ERROR, | |
569 | }; | |
570 | ||
571 | private: | |
572 | VisType vis_type; | |
573 | HIR::SimplePath path; | |
b8422289 | 574 | Location locus; |
8ad1d56d PH |
575 | |
576 | // should this store location info? | |
577 | ||
578 | public: | |
579 | Visibility (VisType vis_type, | |
b8422289 D |
580 | HIR::SimplePath path = HIR::SimplePath::create_empty (), |
581 | Location locus = Location ()) | |
582 | : vis_type (vis_type), path (std::move (path)), locus (locus) | |
8ad1d56d PH |
583 | {} |
584 | ||
585 | // Returns whether visibility is in an error state. | |
586 | bool is_error () const { return vis_type == ERROR; } | |
587 | ||
588 | // Does the current visibility refer to a simple `pub <item>` entirely public | |
589 | bool is_public () const { return vis_type == PUBLIC; } | |
590 | ||
591 | // Is the current visibility public restricted to a certain path | |
592 | bool is_restricted () const { return vis_type == RESTRICTED; } | |
593 | ||
594 | // Creates an error visibility. | |
595 | static Visibility create_error () | |
596 | { | |
597 | return Visibility (ERROR, HIR::SimplePath::create_empty ()); | |
598 | } | |
599 | ||
600 | VisType get_vis_type () const { return vis_type; } | |
601 | ||
602 | const HIR::SimplePath &get_path () const | |
603 | { | |
604 | rust_assert (!is_error ()); | |
605 | return path; | |
606 | } | |
607 | ||
608 | std::string as_string () const; | |
609 | }; | |
610 | ||
611 | // Item that supports visibility - abstract base class | |
612 | class VisItem : public Item | |
613 | { | |
614 | Visibility visibility; | |
615 | ||
616 | protected: | |
617 | // Visibility constructor | |
618 | VisItem (Analysis::NodeMapping mappings, Visibility visibility, | |
619 | AST::AttrVec outer_attrs = AST::AttrVec ()) | |
620 | : Item (std::move (mappings), std::move (outer_attrs)), | |
621 | visibility (std::move (visibility)) | |
622 | {} | |
623 | ||
624 | // Visibility copy constructor | |
625 | VisItem (VisItem const &other) : Item (other), visibility (other.visibility) | |
626 | {} | |
627 | ||
628 | // Overload assignment operator to clone | |
629 | VisItem &operator= (VisItem const &other) | |
630 | { | |
631 | Item::operator= (other); | |
632 | visibility = other.visibility; | |
633 | // outer_attrs = other.outer_attrs; | |
634 | ||
635 | return *this; | |
636 | } | |
637 | ||
638 | // move constructors | |
639 | VisItem (VisItem &&other) = default; | |
640 | VisItem &operator= (VisItem &&other) = default; | |
641 | ||
642 | public: | |
643 | using HIR::Stmt::accept_vis; | |
644 | ||
645 | BaseKind get_hir_kind () override final { return VIS_ITEM; } | |
646 | ||
647 | /* Does the item have some kind of public visibility (non-default | |
648 | * visibility)? */ | |
649 | bool has_visibility () const { return !visibility.is_error (); } | |
650 | ||
651 | virtual void accept_vis (HIRVisItemVisitor &vis) = 0; | |
652 | ||
653 | Visibility &get_visibility () { return visibility; } | |
654 | const Visibility &get_visibility () const { return visibility; } | |
655 | ||
656 | std::string as_string () const override; | |
657 | }; | |
658 | ||
659 | // Rust module item - abstract base class | |
660 | class Module : public VisItem | |
661 | { | |
662 | Identifier module_name; | |
663 | Location locus; | |
664 | // bool has_inner_attrs; | |
665 | AST::AttrVec inner_attrs; | |
666 | // bool has_items; | |
667 | std::vector<std::unique_ptr<Item>> items; | |
668 | ||
669 | public: | |
670 | std::string as_string () const override; | |
671 | ||
672 | // Returns whether the module has items in its body. | |
673 | bool has_items () const { return !items.empty (); } | |
674 | ||
675 | // Returns whether the module has any inner attributes. | |
676 | bool has_inner_attrs () const { return !inner_attrs.empty (); } | |
677 | ||
678 | // Full constructor | |
679 | Module (Analysis::NodeMapping mappings, Identifier module_name, | |
680 | Location locus, std::vector<std::unique_ptr<Item>> items, | |
681 | Visibility visibility = Visibility::create_error (), | |
682 | AST::AttrVec inner_attrs = AST::AttrVec (), | |
683 | AST::AttrVec outer_attrs = AST::AttrVec ()) | |
684 | : VisItem (std::move (mappings), std::move (visibility), | |
685 | std::move (outer_attrs)), | |
686 | module_name (module_name), locus (locus), | |
687 | inner_attrs (std::move (inner_attrs)), items (std::move (items)) | |
688 | {} | |
689 | ||
690 | // Copy constructor with vector clone | |
691 | Module (Module const &other) | |
692 | : VisItem (other), inner_attrs (other.inner_attrs) | |
693 | { | |
694 | items.reserve (other.items.size ()); | |
695 | for (const auto &e : other.items) | |
696 | items.push_back (e->clone_item ()); | |
697 | } | |
698 | ||
699 | // Overloaded assignment operator with vector clone | |
700 | Module &operator= (Module const &other) | |
701 | { | |
702 | VisItem::operator= (other); | |
703 | inner_attrs = other.inner_attrs; | |
704 | ||
705 | items.reserve (other.items.size ()); | |
706 | for (const auto &e : other.items) | |
707 | items.push_back (e->clone_item ()); | |
708 | ||
709 | return *this; | |
710 | } | |
711 | ||
712 | // move constructors | |
713 | Module (Module &&other) = default; | |
714 | Module &operator= (Module &&other) = default; | |
715 | ||
716 | void accept_vis (HIRFullVisitor &vis) override; | |
717 | void accept_vis (HIRStmtVisitor &vis) override; | |
718 | void accept_vis (HIRVisItemVisitor &vis) override; | |
719 | ||
720 | std::vector<std::unique_ptr<Item>> &get_items () { return items; }; | |
721 | ||
722 | /* Override that runs the function recursively on all items contained within | |
723 | * the module. */ | |
724 | void add_crate_name (std::vector<std::string> &names) const override; | |
725 | ||
726 | Location get_locus () const override final { return locus; } | |
727 | ||
728 | ItemKind get_item_kind () const override { return ItemKind::Module; } | |
729 | ||
730 | protected: | |
731 | /* Use covariance to implement clone function as returning this object | |
732 | * rather than base */ | |
733 | Module *clone_item_impl () const override { return new Module (*this); } | |
734 | ||
735 | /* Use covariance to implement clone function as returning this object | |
736 | * rather than base */ | |
737 | /*virtual Module* clone_statement_impl() const override { | |
738 | return new Module(*this); | |
739 | }*/ | |
740 | }; | |
741 | ||
742 | // Rust extern crate declaration HIR node | |
743 | class ExternCrate : public VisItem | |
744 | { | |
745 | // this is either an identifier or "self", with self parsed to string | |
746 | std::string referenced_crate; | |
747 | // bool has_as_clause; | |
748 | // AsClause as_clause; | |
749 | // this is either an identifier or "_", with _ parsed to string | |
750 | std::string as_clause_name; | |
751 | ||
752 | Location locus; | |
753 | ||
754 | /* e.g. | |
755 | "extern crate foo as _" | |
756 | "extern crate foo" | |
757 | "extern crate std as cool_std" */ | |
758 | public: | |
759 | std::string as_string () const override; | |
760 | ||
761 | // Returns whether extern crate declaration has an as clause. | |
762 | bool has_as_clause () const { return !as_clause_name.empty (); } | |
763 | ||
764 | /* Returns whether extern crate declaration references the current crate | |
765 | * (i.e. self). */ | |
766 | bool references_self () const { return referenced_crate == "self"; } | |
767 | ||
768 | // Constructor | |
769 | ExternCrate (Analysis::NodeMapping mappings, std::string referenced_crate, | |
770 | Visibility visibility, AST::AttrVec outer_attrs, Location locus, | |
771 | std::string as_clause_name = std::string ()) | |
772 | : VisItem (std::move (mappings), std::move (visibility), | |
773 | std::move (outer_attrs)), | |
774 | referenced_crate (std::move (referenced_crate)), | |
775 | as_clause_name (std::move (as_clause_name)), locus (locus) | |
776 | {} | |
777 | ||
778 | Location get_locus () const override final { return locus; } | |
779 | ||
780 | ItemKind get_item_kind () const override { return ItemKind::ExternCrate; } | |
781 | ||
782 | void accept_vis (HIRFullVisitor &vis) override; | |
783 | void accept_vis (HIRStmtVisitor &vis) override; | |
784 | void accept_vis (HIRVisItemVisitor &vis) override; | |
785 | ||
786 | // Override that adds extern crate name in decl to passed list of names. | |
787 | void add_crate_name (std::vector<std::string> &names) const override | |
788 | { | |
789 | names.push_back (referenced_crate); | |
790 | } | |
791 | ||
792 | protected: | |
793 | /* Use covariance to implement clone function as returning this object | |
794 | * rather than base */ | |
795 | ExternCrate *clone_item_impl () const override | |
796 | { | |
797 | return new ExternCrate (*this); | |
798 | } | |
799 | ||
800 | /* Use covariance to implement clone function as returning this object | |
801 | * rather than base */ | |
802 | /*virtual ExternCrate* clone_statement_impl() const override { | |
803 | return new ExternCrate(*this); | |
804 | }*/ | |
805 | }; | |
806 | ||
807 | // The path-ish thing referred to in a use declaration - abstract base class | |
808 | class UseTree | |
809 | { | |
810 | Location locus; | |
811 | ||
812 | public: | |
813 | virtual ~UseTree () {} | |
814 | ||
815 | // Unique pointer custom clone function | |
816 | std::unique_ptr<UseTree> clone_use_tree () const | |
817 | { | |
818 | return std::unique_ptr<UseTree> (clone_use_tree_impl ()); | |
819 | } | |
820 | ||
821 | virtual std::string as_string () const = 0; | |
822 | ||
823 | Location get_locus () const { return locus; } | |
824 | ||
825 | virtual void accept_vis (HIRFullVisitor &vis) = 0; | |
826 | ||
827 | protected: | |
828 | // Clone function implementation as pure virtual method | |
829 | virtual UseTree *clone_use_tree_impl () const = 0; | |
830 | ||
831 | UseTree (Location locus) : locus (locus) {} | |
832 | }; | |
833 | ||
834 | // Use tree with a glob (wildcard) operator | |
835 | class UseTreeGlob : public UseTree | |
836 | { | |
837 | public: | |
838 | enum PathType | |
839 | { | |
840 | NO_PATH, | |
841 | GLOBAL, | |
842 | PATH_PREFIXED | |
843 | }; | |
844 | ||
845 | private: | |
846 | PathType glob_type; | |
847 | AST::SimplePath path; | |
848 | ||
849 | public: | |
850 | UseTreeGlob (PathType glob_type, AST::SimplePath path, Location locus) | |
851 | : UseTree (locus), glob_type (glob_type), path (std::move (path)) | |
852 | { | |
853 | if (this->glob_type != PATH_PREFIXED) | |
854 | { | |
855 | // compiler implementation error if there is a path with a | |
856 | // non-path-prefixed use tree glob | |
857 | gcc_assert (!has_path ()); | |
858 | } | |
859 | // TODO: do path-prefixed paths also have to have a path? If so, have an | |
860 | // assert for that too. | |
861 | } | |
862 | ||
863 | /* Returns whether has path. Should be made redundant by PathType | |
864 | * PATH_PREFIXED. */ | |
865 | bool has_path () const { return !path.is_empty (); } | |
866 | ||
867 | std::string as_string () const override; | |
868 | ||
869 | void accept_vis (HIRFullVisitor &vis) override; | |
870 | ||
871 | /* TODO: find way to ensure only PATH_PREFIXED glob_type has path - factory | |
872 | * methods? */ | |
873 | protected: | |
874 | /* Use covariance to implement clone function as returning this object | |
875 | * rather than base */ | |
876 | UseTreeGlob *clone_use_tree_impl () const override | |
877 | { | |
878 | return new UseTreeGlob (*this); | |
879 | } | |
880 | }; | |
881 | ||
882 | // Use tree with a list of paths with a common prefix | |
883 | class UseTreeList : public UseTree | |
884 | { | |
885 | public: | |
886 | enum PathType | |
887 | { | |
888 | NO_PATH, | |
889 | GLOBAL, | |
890 | PATH_PREFIXED | |
891 | }; | |
892 | ||
893 | private: | |
894 | PathType path_type; | |
895 | AST::SimplePath path; | |
896 | ||
897 | std::vector<std::unique_ptr<UseTree>> trees; | |
898 | ||
899 | public: | |
900 | UseTreeList (PathType path_type, AST::SimplePath path, | |
901 | std::vector<std::unique_ptr<UseTree>> trees, Location locus) | |
902 | : UseTree (locus), path_type (path_type), path (std::move (path)), | |
903 | trees (std::move (trees)) | |
904 | { | |
905 | if (this->path_type != PATH_PREFIXED) | |
906 | { | |
907 | // compiler implementation error if there is a path with a | |
908 | // non-path-prefixed use tree glob | |
909 | gcc_assert (!has_path ()); | |
910 | } | |
911 | // TODO: do path-prefixed paths also have to have a path? If so, have an | |
912 | // assert for that too. | |
913 | } | |
914 | ||
915 | // copy constructor with vector clone | |
916 | UseTreeList (UseTreeList const &other) | |
917 | : UseTree (other), path_type (other.path_type), path (other.path) | |
918 | { | |
919 | trees.reserve (other.trees.size ()); | |
920 | for (const auto &e : other.trees) | |
921 | trees.push_back (e->clone_use_tree ()); | |
922 | } | |
923 | ||
924 | // overloaded assignment operator with vector clone | |
925 | UseTreeList &operator= (UseTreeList const &other) | |
926 | { | |
927 | UseTree::operator= (other); | |
928 | path_type = other.path_type; | |
929 | path = other.path; | |
930 | ||
931 | trees.reserve (other.trees.size ()); | |
932 | for (const auto &e : other.trees) | |
933 | trees.push_back (e->clone_use_tree ()); | |
934 | ||
935 | return *this; | |
936 | } | |
937 | ||
938 | // move constructors | |
939 | UseTreeList (UseTreeList &&other) = default; | |
940 | UseTreeList &operator= (UseTreeList &&other) = default; | |
941 | ||
942 | // Returns whether has path. Should be made redundant by path_type. | |
943 | bool has_path () const { return !path.is_empty (); } | |
944 | ||
945 | // Returns whether has inner tree elements. | |
946 | bool has_trees () const { return !trees.empty (); } | |
947 | ||
948 | std::string as_string () const override; | |
949 | ||
950 | void accept_vis (HIRFullVisitor &vis) override; | |
951 | ||
952 | // TODO: find way to ensure only PATH_PREFIXED path_type has path - factory | |
953 | // methods? | |
954 | protected: | |
955 | /* Use covariance to implement clone function as returning this object | |
956 | * rather than base */ | |
957 | UseTreeList *clone_use_tree_impl () const override | |
958 | { | |
959 | return new UseTreeList (*this); | |
960 | } | |
961 | }; | |
962 | ||
963 | // Use tree where it rebinds the module name as something else | |
964 | class UseTreeRebind : public UseTree | |
965 | { | |
966 | public: | |
967 | enum NewBindType | |
968 | { | |
969 | NONE, | |
970 | IDENTIFIER, | |
971 | WILDCARD | |
972 | }; | |
973 | ||
974 | private: | |
975 | AST::SimplePath path; | |
976 | ||
977 | NewBindType bind_type; | |
978 | Identifier identifier; // only if NewBindType is IDENTIFIER | |
979 | ||
980 | public: | |
981 | UseTreeRebind (NewBindType bind_type, AST::SimplePath path, Location locus, | |
982 | Identifier identifier = std::string ()) | |
983 | : UseTree (locus), path (std::move (path)), bind_type (bind_type), | |
984 | identifier (std::move (identifier)) | |
985 | {} | |
986 | ||
987 | // Returns whether has path (this should always be true). | |
988 | bool has_path () const { return !path.is_empty (); } | |
989 | ||
990 | // Returns whether has identifier (or, rather, is allowed to). | |
991 | bool has_identifier () const { return bind_type == IDENTIFIER; } | |
992 | ||
993 | std::string as_string () const override; | |
994 | ||
995 | void accept_vis (HIRFullVisitor &vis) override; | |
996 | ||
997 | // TODO: find way to ensure only PATH_PREFIXED path_type has path - factory | |
998 | // methods? | |
999 | protected: | |
1000 | /* Use covariance to implement clone function as returning this object | |
1001 | * rather than base */ | |
1002 | virtual UseTreeRebind *clone_use_tree_impl () const override | |
1003 | { | |
1004 | return new UseTreeRebind (*this); | |
1005 | } | |
1006 | }; | |
1007 | ||
1008 | // Rust use declaration (i.e. for modules) HIR node | |
1009 | class UseDeclaration : public VisItem | |
1010 | { | |
1011 | std::unique_ptr<UseTree> use_tree; | |
1012 | Location locus; | |
1013 | ||
1014 | public: | |
1015 | std::string as_string () const override; | |
1016 | ||
1017 | UseDeclaration (Analysis::NodeMapping mappings, | |
1018 | std::unique_ptr<UseTree> use_tree, Visibility visibility, | |
1019 | AST::AttrVec outer_attrs, Location locus) | |
1020 | : VisItem (std::move (mappings), std::move (visibility), | |
1021 | std::move (outer_attrs)), | |
1022 | use_tree (std::move (use_tree)), locus (locus) | |
1023 | {} | |
1024 | ||
1025 | // Copy constructor with clone | |
1026 | UseDeclaration (UseDeclaration const &other) | |
1027 | : VisItem (other), use_tree (other.use_tree->clone_use_tree ()), | |
1028 | locus (other.locus) | |
1029 | {} | |
1030 | ||
1031 | // Overloaded assignment operator to clone | |
1032 | UseDeclaration &operator= (UseDeclaration const &other) | |
1033 | { | |
1034 | VisItem::operator= (other); | |
1035 | use_tree = other.use_tree->clone_use_tree (); | |
1036 | // visibility = other.visibility->clone_visibility(); | |
1037 | // outer_attrs = other.outer_attrs; | |
1038 | locus = other.locus; | |
1039 | ||
1040 | return *this; | |
1041 | } | |
1042 | ||
1043 | // move constructors | |
1044 | UseDeclaration (UseDeclaration &&other) = default; | |
1045 | UseDeclaration &operator= (UseDeclaration &&other) = default; | |
1046 | ||
1047 | Location get_locus () const override final { return locus; } | |
1048 | ItemKind get_item_kind () const override { return ItemKind::UseDeclaration; } | |
1049 | ||
1050 | void accept_vis (HIRFullVisitor &vis) override; | |
1051 | void accept_vis (HIRStmtVisitor &vis) override; | |
1052 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1053 | ||
1054 | protected: | |
1055 | /* Use covariance to implement clone function as returning this object | |
1056 | * rather than base */ | |
1057 | UseDeclaration *clone_item_impl () const override | |
1058 | { | |
1059 | return new UseDeclaration (*this); | |
1060 | } | |
1061 | ||
1062 | /* Use covariance to implement clone function as returning this object | |
1063 | * rather than base */ | |
1064 | /*virtual UseDeclaration* clone_statement_impl() const override { | |
1065 | return new UseDeclaration(*this); | |
1066 | }*/ | |
1067 | }; | |
1068 | ||
1069 | class LetStmt; | |
1070 | ||
1071 | // Rust function declaration HIR node | |
1072 | class Function : public VisItem, public ImplItem | |
1073 | { | |
1074 | FunctionQualifiers qualifiers; | |
1075 | Identifier function_name; | |
1076 | std::vector<std::unique_ptr<GenericParam>> generic_params; | |
1077 | std::vector<FunctionParam> function_params; | |
1078 | std::unique_ptr<Type> return_type; | |
1079 | WhereClause where_clause; | |
1080 | std::unique_ptr<BlockExpr> function_body; | |
1081 | SelfParam self; | |
1082 | Location locus; | |
1083 | ||
1084 | public: | |
1085 | std::string as_string () const override; | |
1086 | ||
1087 | // Returns whether function has generic parameters. | |
1088 | bool has_generics () const { return !generic_params.empty (); } | |
1089 | ||
1090 | // Returns whether function has regular parameters. | |
1091 | bool has_function_params () const { return !function_params.empty (); } | |
1092 | ||
1093 | // Returns whether function has return type - if not, it is void. | |
1094 | bool has_function_return_type () const { return return_type != nullptr; } | |
1095 | ||
1096 | // Returns whether function has a where clause. | |
1097 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
1098 | ||
1099 | ImplItemType get_impl_item_type () const override final | |
1100 | { | |
1101 | return ImplItem::ImplItemType::FUNCTION; | |
1102 | } | |
1103 | ||
1104 | ItemKind get_item_kind () const override { return ItemKind::Function; } | |
1105 | ||
1106 | // Mega-constructor with all possible fields | |
1107 | Function (Analysis::NodeMapping mappings, Identifier function_name, | |
1108 | FunctionQualifiers qualifiers, | |
1109 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1110 | std::vector<FunctionParam> function_params, | |
1111 | std::unique_ptr<Type> return_type, WhereClause where_clause, | |
1112 | std::unique_ptr<BlockExpr> function_body, Visibility vis, | |
1113 | AST::AttrVec outer_attrs, SelfParam self, Location locus) | |
1114 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
1115 | qualifiers (std::move (qualifiers)), | |
1116 | function_name (std::move (function_name)), | |
1117 | generic_params (std::move (generic_params)), | |
1118 | function_params (std::move (function_params)), | |
1119 | return_type (std::move (return_type)), | |
1120 | where_clause (std::move (where_clause)), | |
1121 | function_body (std::move (function_body)), self (std::move (self)), | |
1122 | locus (locus) | |
1123 | {} | |
1124 | ||
1125 | // Copy constructor with clone | |
1126 | Function (Function const &other) | |
1127 | : VisItem (other), qualifiers (other.qualifiers), | |
1128 | function_name (other.function_name), | |
1129 | function_params (other.function_params), | |
1130 | where_clause (other.where_clause), | |
1131 | function_body (other.function_body->clone_block_expr ()), | |
1132 | self (other.self), locus (other.locus) | |
1133 | { | |
1134 | // guard to prevent null dereference (always required) | |
1135 | if (other.return_type != nullptr) | |
1136 | return_type = other.return_type->clone_type (); | |
1137 | else | |
1138 | return_type = nullptr; | |
1139 | ||
1140 | generic_params.reserve (other.generic_params.size ()); | |
1141 | for (const auto &e : other.generic_params) | |
1142 | generic_params.push_back (e->clone_generic_param ()); | |
1143 | } | |
1144 | ||
1145 | // Overloaded assignment operator to clone | |
1146 | Function &operator= (Function const &other) | |
1147 | { | |
1148 | VisItem::operator= (other); | |
1149 | function_name = other.function_name; | |
1150 | qualifiers = other.qualifiers; | |
1151 | function_params = other.function_params; | |
1152 | ||
1153 | // guard to prevent null dereference (always required) | |
1154 | if (other.return_type != nullptr) | |
1155 | return_type = other.return_type->clone_type (); | |
1156 | else | |
1157 | return_type = nullptr; | |
1158 | ||
1159 | where_clause = other.where_clause; | |
1160 | function_body = other.function_body->clone_block_expr (); | |
1161 | locus = other.locus; | |
1162 | self = other.self; | |
1163 | ||
1164 | generic_params.reserve (other.generic_params.size ()); | |
1165 | for (const auto &e : other.generic_params) | |
1166 | generic_params.push_back (e->clone_generic_param ()); | |
1167 | ||
1168 | return *this; | |
1169 | } | |
1170 | ||
1171 | // move constructors | |
1172 | Function (Function &&other) = default; | |
1173 | Function &operator= (Function &&other) = default; | |
1174 | ||
1175 | Location get_locus () const override final { return locus; } | |
1176 | ||
1177 | void accept_vis (HIRFullVisitor &vis) override; | |
1178 | void accept_vis (HIRImplVisitor &vis) override; | |
1179 | void accept_vis (HIRStmtVisitor &vis) override; | |
1180 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1181 | ||
1182 | Analysis::NodeMapping get_impl_mappings () const override | |
1183 | { | |
1184 | return get_mappings (); | |
1185 | }; | |
1186 | ||
1187 | std::vector<FunctionParam> &get_function_params () { return function_params; } | |
1188 | const std::vector<FunctionParam> &get_function_params () const | |
1189 | { | |
1190 | return function_params; | |
1191 | } | |
1192 | ||
1193 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
1194 | { | |
1195 | return generic_params; | |
1196 | } | |
1197 | const std::vector<std::unique_ptr<GenericParam>> &get_generic_params () const | |
1198 | { | |
1199 | return generic_params; | |
1200 | } | |
1201 | ||
1202 | // TODO: is this better? Or is a "vis_block" better? | |
1203 | std::unique_ptr<BlockExpr> &get_definition () | |
1204 | { | |
1205 | rust_assert (function_body != nullptr); | |
1206 | return function_body; | |
1207 | } | |
1208 | ||
1209 | const FunctionQualifiers &get_qualifiers () const { return qualifiers; } | |
1210 | ||
1211 | Identifier get_function_name () const { return function_name; } | |
1212 | ||
1213 | // TODO: is this better? Or is a "vis_block" better? | |
1214 | WhereClause &get_where_clause () { return where_clause; } | |
1215 | ||
1216 | bool has_return_type () const { return return_type != nullptr; } | |
1217 | ||
1218 | // TODO: is this better? Or is a "vis_block" better? | |
1219 | std::unique_ptr<Type> &get_return_type () | |
1220 | { | |
1221 | rust_assert (has_return_type ()); | |
1222 | return return_type; | |
1223 | } | |
1224 | ||
1225 | bool is_method () const { return !self.is_error (); } | |
1226 | ||
1227 | SelfParam &get_self_param () { return self; } | |
1228 | ||
1229 | protected: | |
1230 | /* Use covariance to implement clone function as returning this object | |
1231 | * rather than base */ | |
1232 | Function *clone_item_impl () const override { return new Function (*this); } | |
1233 | ||
1234 | /* Use covariance to implement clone function as returning this object | |
1235 | * rather than base */ | |
1236 | Function *clone_inherent_impl_item_impl () const override | |
1237 | { | |
1238 | return new Function (*this); | |
1239 | } | |
1240 | }; | |
1241 | ||
1242 | // Rust type alias (i.e. typedef) HIR node | |
1243 | class TypeAlias : public VisItem, public ImplItem | |
1244 | { | |
1245 | Identifier new_type_name; | |
1246 | ||
1247 | // bool has_generics; | |
1248 | // Generics generic_params; | |
1249 | std::vector<std::unique_ptr<GenericParam>> generic_params; // inlined | |
1250 | ||
1251 | // bool has_where_clause; | |
1252 | WhereClause where_clause; | |
1253 | ||
1254 | std::unique_ptr<Type> existing_type; | |
1255 | ||
1256 | Location locus; | |
1257 | ||
1258 | public: | |
1259 | std::string as_string () const override; | |
1260 | ||
1261 | // Returns whether type alias has generic parameters. | |
1262 | bool has_generics () const { return !generic_params.empty (); } | |
1263 | ||
1264 | // Returns whether type alias has a where clause. | |
1265 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
1266 | ||
1267 | ImplItemType get_impl_item_type () const override final | |
1268 | { | |
1269 | return ImplItem::ImplItemType::TYPE_ALIAS; | |
1270 | } | |
1271 | ||
1272 | // Mega-constructor with all possible fields | |
1273 | TypeAlias (Analysis::NodeMapping mappings, Identifier new_type_name, | |
1274 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1275 | WhereClause where_clause, std::unique_ptr<Type> existing_type, | |
1276 | Visibility vis, AST::AttrVec outer_attrs, Location locus) | |
1277 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
1278 | new_type_name (std::move (new_type_name)), | |
1279 | generic_params (std::move (generic_params)), | |
1280 | where_clause (std::move (where_clause)), | |
1281 | existing_type (std::move (existing_type)), locus (locus) | |
1282 | {} | |
1283 | ||
1284 | // Copy constructor | |
1285 | TypeAlias (TypeAlias const &other) | |
1286 | : VisItem (other), new_type_name (other.new_type_name), | |
1287 | where_clause (other.where_clause), | |
1288 | existing_type (other.existing_type->clone_type ()), locus (other.locus) | |
1289 | { | |
1290 | generic_params.reserve (other.generic_params.size ()); | |
1291 | for (const auto &e : other.generic_params) | |
1292 | generic_params.push_back (e->clone_generic_param ()); | |
1293 | } | |
1294 | ||
1295 | // Overloaded assignment operator to clone | |
1296 | TypeAlias &operator= (TypeAlias const &other) | |
1297 | { | |
1298 | VisItem::operator= (other); | |
1299 | new_type_name = other.new_type_name; | |
1300 | where_clause = other.where_clause; | |
1301 | existing_type = other.existing_type->clone_type (); | |
1302 | locus = other.locus; | |
1303 | ||
1304 | generic_params.reserve (other.generic_params.size ()); | |
1305 | for (const auto &e : other.generic_params) | |
1306 | generic_params.push_back (e->clone_generic_param ()); | |
1307 | ||
1308 | return *this; | |
1309 | } | |
1310 | ||
1311 | // move constructors | |
1312 | TypeAlias (TypeAlias &&other) = default; | |
1313 | TypeAlias &operator= (TypeAlias &&other) = default; | |
1314 | ||
1315 | Location get_locus () const override final { return locus; } | |
1316 | ||
1317 | void accept_vis (HIRFullVisitor &vis) override; | |
1318 | void accept_vis (HIRImplVisitor &vis) override; | |
1319 | void accept_vis (HIRStmtVisitor &vis) override; | |
1320 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1321 | ||
1322 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
1323 | { | |
1324 | return generic_params; | |
1325 | } | |
1326 | const std::vector<std::unique_ptr<GenericParam>> &get_generic_params () const | |
1327 | { | |
1328 | return generic_params; | |
1329 | } | |
1330 | ||
1331 | WhereClause &get_where_clause () { return where_clause; } | |
1332 | ||
1333 | std::unique_ptr<Type> &get_type_aliased () | |
1334 | { | |
1335 | rust_assert (existing_type != nullptr); | |
1336 | return existing_type; | |
1337 | } | |
1338 | ||
1339 | Identifier get_new_type_name () const { return new_type_name; } | |
1340 | ||
1341 | ItemKind get_item_kind () const override { return ItemKind::TypeAlias; } | |
1342 | ||
1343 | Analysis::NodeMapping get_impl_mappings () const override | |
1344 | { | |
1345 | return get_mappings (); | |
1346 | }; | |
1347 | ||
1348 | protected: | |
1349 | /* Use covariance to implement clone function as returning this object | |
1350 | * rather than base */ | |
1351 | TypeAlias *clone_item_impl () const override { return new TypeAlias (*this); } | |
1352 | ||
1353 | /* Use covariance to implement clone function as returning this object | |
1354 | * rather than base */ | |
1355 | TypeAlias *clone_inherent_impl_item_impl () const override | |
1356 | { | |
1357 | return new TypeAlias (*this); | |
1358 | } | |
1359 | }; | |
1360 | ||
1361 | // Rust base struct declaration HIR node - abstract base class | |
1362 | class Struct : public VisItem | |
1363 | { | |
1364 | protected: | |
1365 | // protected to enable access by derived classes - allows better as_string | |
1366 | Identifier struct_name; | |
1367 | ||
1368 | // bool has_generics; | |
1369 | // Generics generic_params; | |
1370 | std::vector<std::unique_ptr<GenericParam>> generic_params; // inlined | |
1371 | ||
1372 | // bool has_where_clause; | |
1373 | WhereClause where_clause; | |
1374 | ||
1375 | Location locus; | |
1376 | ||
1377 | public: | |
1378 | Identifier get_identifier () const { return struct_name; } | |
1379 | ||
1380 | // Returns whether struct has generic parameters. | |
1381 | bool has_generics () const { return !generic_params.empty (); } | |
1382 | ||
1383 | // Returns whether struct has a where clause. | |
1384 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
1385 | ||
1386 | Location get_locus () const override final { return locus; } | |
1387 | ItemKind get_item_kind () const override { return ItemKind::Struct; } | |
1388 | ||
1389 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
1390 | { | |
1391 | return generic_params; | |
1392 | } | |
1393 | ||
1394 | WhereClause &get_where_clause () { return where_clause; } | |
1395 | ||
1396 | protected: | |
1397 | Struct (Analysis::NodeMapping mappings, Identifier struct_name, | |
1398 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1399 | WhereClause where_clause, Visibility vis, Location locus, | |
1400 | AST::AttrVec outer_attrs = AST::AttrVec ()) | |
1401 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
1402 | struct_name (std::move (struct_name)), | |
1403 | generic_params (std::move (generic_params)), | |
1404 | where_clause (std::move (where_clause)), locus (locus) | |
1405 | {} | |
1406 | ||
1407 | // Copy constructor with vector clone | |
1408 | Struct (Struct const &other) | |
1409 | : VisItem (other), struct_name (other.struct_name), | |
1410 | where_clause (other.where_clause), locus (other.locus) | |
1411 | { | |
1412 | generic_params.reserve (other.generic_params.size ()); | |
1413 | for (const auto &e : other.generic_params) | |
1414 | generic_params.push_back (e->clone_generic_param ()); | |
1415 | } | |
1416 | ||
1417 | // Overloaded assignment operator with vector clone | |
1418 | Struct &operator= (Struct const &other) | |
1419 | { | |
1420 | VisItem::operator= (other); | |
1421 | struct_name = other.struct_name; | |
1422 | where_clause = other.where_clause; | |
1423 | locus = other.locus; | |
1424 | ||
1425 | generic_params.reserve (other.generic_params.size ()); | |
1426 | for (const auto &e : other.generic_params) | |
1427 | generic_params.push_back (e->clone_generic_param ()); | |
1428 | ||
1429 | return *this; | |
1430 | } | |
1431 | ||
1432 | // move constructors | |
1433 | Struct (Struct &&other) = default; | |
1434 | Struct &operator= (Struct &&other) = default; | |
1435 | }; | |
1436 | ||
1437 | // A single field in a struct | |
1438 | struct StructField | |
1439 | { | |
1440 | public: | |
1441 | // bool has_outer_attributes; | |
1442 | AST::AttrVec outer_attrs; | |
1443 | ||
1444 | // bool has_visibility; | |
1445 | Visibility visibility; | |
1446 | ||
1447 | Identifier field_name; | |
1448 | std::unique_ptr<Type> field_type; | |
1449 | ||
1450 | Analysis::NodeMapping mappings; | |
1451 | ||
1452 | Location locus; | |
1453 | ||
1454 | // Returns whether struct field has any outer attributes. | |
1455 | bool has_outer_attributes () const { return !outer_attrs.empty (); } | |
1456 | ||
1457 | // Returns whether struct field has a non-private (non-default) visibility. | |
1458 | bool has_visibility () const { return !visibility.is_error (); } | |
1459 | ||
1460 | StructField (Analysis::NodeMapping mappings, Identifier field_name, | |
1461 | std::unique_ptr<Type> field_type, Visibility vis, Location locus, | |
1462 | AST::AttrVec outer_attrs = AST::AttrVec ()) | |
1463 | : outer_attrs (std::move (outer_attrs)), visibility (std::move (vis)), | |
1464 | field_name (std::move (field_name)), field_type (std::move (field_type)), | |
1465 | mappings (mappings), locus (locus) | |
1466 | {} | |
1467 | ||
1468 | // Copy constructor | |
1469 | StructField (StructField const &other) | |
1470 | : outer_attrs (other.outer_attrs), visibility (other.visibility), | |
1471 | field_name (other.field_name), | |
1472 | field_type (other.field_type->clone_type ()), mappings (other.mappings) | |
1473 | {} | |
1474 | ||
1475 | ~StructField () = default; | |
1476 | ||
1477 | // Overloaded assignment operator to clone | |
1478 | StructField &operator= (StructField const &other) | |
1479 | { | |
1480 | field_name = other.field_name; | |
1481 | field_type = other.field_type->clone_type (); | |
1482 | visibility = other.visibility; | |
1483 | outer_attrs = other.outer_attrs; | |
1484 | mappings = other.mappings; | |
1485 | ||
1486 | return *this; | |
1487 | } | |
1488 | ||
1489 | // move constructors | |
1490 | StructField (StructField &&other) = default; | |
1491 | StructField &operator= (StructField &&other) = default; | |
1492 | ||
1493 | std::string as_string () const; | |
1494 | ||
1495 | Identifier get_field_name () const { return field_name; } | |
1496 | ||
1497 | std::unique_ptr<Type> &get_field_type () | |
1498 | { | |
1499 | rust_assert (field_type != nullptr); | |
1500 | return field_type; | |
1501 | } | |
1502 | ||
1503 | Analysis::NodeMapping get_mappings () const { return mappings; } | |
1504 | ||
1505 | Location get_locus () { return locus; } | |
1506 | ||
1507 | Visibility &get_visibility () { return visibility; } | |
1508 | }; | |
1509 | ||
1510 | // Rust struct declaration with true struct type HIR node | |
1511 | class StructStruct : public Struct | |
1512 | { | |
1513 | public: | |
1514 | std::vector<StructField> fields; | |
1515 | bool is_unit; | |
1516 | ||
1517 | std::string as_string () const override; | |
1518 | ||
1519 | // Mega-constructor with all possible fields | |
1520 | StructStruct (Analysis::NodeMapping mappings, std::vector<StructField> fields, | |
1521 | Identifier struct_name, | |
1522 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1523 | WhereClause where_clause, bool is_unit, Visibility vis, | |
1524 | AST::AttrVec outer_attrs, Location locus) | |
1525 | : Struct (std::move (mappings), std::move (struct_name), | |
1526 | std::move (generic_params), std::move (where_clause), | |
1527 | std::move (vis), locus, std::move (outer_attrs)), | |
1528 | fields (std::move (fields)), is_unit (is_unit) | |
1529 | {} | |
1530 | ||
1531 | // Unit struct constructor | |
1532 | StructStruct (Analysis::NodeMapping mappings, Identifier struct_name, | |
1533 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1534 | WhereClause where_clause, Visibility vis, | |
1535 | AST::AttrVec outer_attrs, Location locus) | |
1536 | : Struct (std::move (mappings), std::move (struct_name), | |
1537 | std::move (generic_params), std::move (where_clause), | |
1538 | std::move (vis), locus, std::move (outer_attrs)), | |
1539 | is_unit (true) | |
1540 | {} | |
1541 | // TODO: can a unit struct have generic fields? assuming yes for now. | |
1542 | ||
1543 | /* Returns whether the struct is a unit struct - struct defined without | |
1544 | * fields. This is important because it also means an implicit constant of its | |
1545 | * type is defined. */ | |
1546 | bool is_unit_struct () const { return is_unit; } | |
1547 | ||
1548 | void accept_vis (HIRFullVisitor &vis) override; | |
1549 | void accept_vis (HIRStmtVisitor &vis) override; | |
1550 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1551 | ||
1552 | std::vector<StructField> &get_fields () { return fields; } | |
1553 | ||
1554 | protected: | |
1555 | /* Use covariance to implement clone function as returning this object | |
1556 | * rather than base */ | |
1557 | StructStruct *clone_item_impl () const override | |
1558 | { | |
1559 | return new StructStruct (*this); | |
1560 | } | |
1561 | ||
1562 | /* Use covariance to implement clone function as returning this object | |
1563 | * rather than base */ | |
1564 | /*virtual StructStruct* clone_statement_impl() const override { | |
1565 | return new StructStruct(*this); | |
1566 | }*/ | |
1567 | }; | |
1568 | ||
1569 | // A single field in a tuple | |
1570 | struct TupleField | |
1571 | { | |
1572 | private: | |
1573 | // bool has_outer_attributes; | |
1574 | AST::AttrVec outer_attrs; | |
1575 | ||
1576 | // bool has_visibility; | |
1577 | Visibility visibility; | |
1578 | ||
1579 | std::unique_ptr<Type> field_type; | |
1580 | ||
1581 | Location locus; | |
1582 | ||
1583 | Analysis::NodeMapping mappings; | |
1584 | ||
1585 | public: | |
1586 | // Returns whether tuple field has outer attributes. | |
1587 | bool has_outer_attributes () const { return !outer_attrs.empty (); } | |
1588 | ||
1589 | /* Returns whether tuple field has a non-default visibility (i.e. a public | |
1590 | * one) */ | |
1591 | bool has_visibility () const { return !visibility.is_error (); } | |
1592 | ||
1593 | // Complete constructor | |
1594 | TupleField (Analysis::NodeMapping mapping, std::unique_ptr<Type> field_type, | |
1595 | Visibility vis, Location locus, | |
1596 | AST::AttrVec outer_attrs = AST::AttrVec ()) | |
1597 | : outer_attrs (std::move (outer_attrs)), visibility (std::move (vis)), | |
1598 | field_type (std::move (field_type)), locus (locus), mappings (mapping) | |
1599 | {} | |
1600 | ||
1601 | // Copy constructor with clone | |
1602 | TupleField (TupleField const &other) | |
1603 | : outer_attrs (other.outer_attrs), visibility (other.visibility), | |
1604 | field_type (other.field_type->clone_type ()), locus (other.locus), | |
1605 | mappings (other.mappings) | |
1606 | {} | |
1607 | ||
1608 | ~TupleField () = default; | |
1609 | ||
1610 | // Overloaded assignment operator to clone | |
1611 | TupleField &operator= (TupleField const &other) | |
1612 | { | |
1613 | field_type = other.field_type->clone_type (); | |
1614 | visibility = other.visibility; | |
1615 | outer_attrs = other.outer_attrs; | |
1616 | locus = other.locus; | |
1617 | mappings = other.mappings; | |
1618 | ||
1619 | return *this; | |
1620 | } | |
1621 | ||
1622 | // move constructors | |
1623 | TupleField (TupleField &&other) = default; | |
1624 | TupleField &operator= (TupleField &&other) = default; | |
1625 | ||
1626 | // Returns whether tuple field is in an error state. | |
1627 | bool is_error () const { return field_type == nullptr; } | |
1628 | ||
1629 | std::string as_string () const; | |
1630 | ||
1631 | Analysis::NodeMapping get_mappings () const { return mappings; } | |
1632 | ||
1633 | Location get_locus () const { return locus; } | |
1634 | ||
1635 | std::unique_ptr<HIR::Type> &get_field_type () { return field_type; } | |
1636 | }; | |
1637 | ||
1638 | // Rust tuple declared using struct keyword HIR node | |
1639 | class TupleStruct : public Struct | |
1640 | { | |
1641 | std::vector<TupleField> fields; | |
1642 | ||
1643 | public: | |
1644 | std::string as_string () const override; | |
1645 | ||
1646 | // Mega-constructor with all possible fields | |
1647 | TupleStruct (Analysis::NodeMapping mappings, std::vector<TupleField> fields, | |
1648 | Identifier struct_name, | |
1649 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1650 | WhereClause where_clause, Visibility vis, | |
1651 | AST::AttrVec outer_attrs, Location locus) | |
1652 | : Struct (std::move (mappings), std::move (struct_name), | |
1653 | std::move (generic_params), std::move (where_clause), | |
1654 | std::move (vis), locus, std::move (outer_attrs)), | |
1655 | fields (std::move (fields)) | |
1656 | {} | |
1657 | ||
1658 | void accept_vis (HIRFullVisitor &vis) override; | |
1659 | void accept_vis (HIRStmtVisitor &vis) override; | |
1660 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1661 | ||
1662 | std::vector<TupleField> &get_fields () { return fields; } | |
1663 | const std::vector<TupleField> &get_fields () const { return fields; } | |
1664 | ||
1665 | protected: | |
1666 | /* Use covariance to implement clone function as returning this object | |
1667 | * rather than base */ | |
1668 | TupleStruct *clone_item_impl () const override | |
1669 | { | |
1670 | return new TupleStruct (*this); | |
1671 | } | |
1672 | ||
1673 | /* Use covariance to implement clone function as returning this object | |
1674 | * rather than base */ | |
1675 | /*virtual TupleStruct* clone_statement_impl() const override { | |
1676 | return new TupleStruct(*this); | |
1677 | }*/ | |
1678 | }; | |
1679 | ||
1680 | /* An item used in an "enum" tagged union - not abstract: base represents a | |
1681 | name-only enum. Syntactically EnumItem's can have a Visibility. But not | |
1682 | Semantically. So check there is no Visibility when lowering and make this | |
1683 | an Item, not an VisItem. */ | |
1684 | class EnumItem : public Item | |
1685 | { | |
1686 | Identifier variant_name; | |
1687 | Location locus; | |
1688 | ||
1689 | public: | |
1690 | virtual ~EnumItem () {} | |
1691 | ||
1692 | enum EnumItemKind | |
1693 | { | |
1694 | Named, | |
1695 | Tuple, | |
1696 | Struct, | |
1697 | Discriminant, | |
1698 | }; | |
1699 | ||
1700 | EnumItem (Analysis::NodeMapping mappings, Identifier variant_name, | |
1701 | AST::AttrVec outer_attrs, Location locus) | |
1702 | : Item (std::move (mappings), std::move (outer_attrs)), | |
1703 | variant_name (std::move (variant_name)), locus (locus) | |
1704 | {} | |
1705 | ||
1706 | // Unique pointer custom clone function | |
1707 | std::unique_ptr<EnumItem> clone_enum_item () const | |
1708 | { | |
1709 | return std::unique_ptr<EnumItem> (clone_item_impl ()); | |
1710 | } | |
1711 | ||
1712 | virtual std::string as_string () const override; | |
1713 | virtual EnumItemKind get_enum_item_kind () const { return Named; }; | |
1714 | ||
1715 | // not pure virtual as not abstract | |
1716 | void accept_vis (HIRFullVisitor &vis) override; | |
1717 | void accept_vis (HIRStmtVisitor &vis) override; | |
1718 | // void accept_vis (HIRVisItemVisitor &vis) override; | |
1719 | ||
1720 | Location get_locus () const override { return locus; } | |
1721 | ||
1722 | Identifier get_identifier () const { return variant_name; } | |
1723 | ||
1724 | ItemKind get_item_kind () const override { return ItemKind::EnumItem; } | |
1725 | ||
1726 | protected: | |
1727 | EnumItem *clone_item_impl () const override { return new EnumItem (*this); } | |
1728 | }; | |
1729 | ||
1730 | // A tuple item used in an "enum" tagged union | |
1731 | class EnumItemTuple : public EnumItem | |
1732 | { | |
1733 | // bool has_tuple_fields; | |
1734 | std::vector<TupleField> tuple_fields; | |
1735 | ||
1736 | public: | |
1737 | // Returns whether tuple enum item has tuple fields. | |
1738 | bool has_tuple_fields () const { return !tuple_fields.empty (); } | |
1739 | ||
1740 | EnumItemKind get_enum_item_kind () const override | |
1741 | { | |
1742 | return EnumItemKind::Tuple; | |
1743 | } | |
1744 | ||
1745 | EnumItemTuple (Analysis::NodeMapping mappings, Identifier variant_name, | |
1746 | std::vector<TupleField> tuple_fields, AST::AttrVec outer_attrs, | |
1747 | Location locus) | |
1748 | : EnumItem (std::move (mappings), std::move (variant_name), | |
1749 | std::move (outer_attrs), locus), | |
1750 | tuple_fields (std::move (tuple_fields)) | |
1751 | {} | |
1752 | ||
1753 | std::string as_string () const override; | |
1754 | ||
1755 | void accept_vis (HIRFullVisitor &vis) override; | |
1756 | void accept_vis (HIRStmtVisitor &vis) override; | |
1757 | ||
1758 | std::vector<TupleField> &get_tuple_fields () { return tuple_fields; } | |
1759 | ||
1760 | protected: | |
1761 | // Clone function implementation as (not pure) virtual method | |
1762 | EnumItemTuple *clone_item_impl () const override | |
1763 | { | |
1764 | return new EnumItemTuple (*this); | |
1765 | } | |
1766 | }; | |
1767 | ||
1768 | // A struct item used in an "enum" tagged union | |
1769 | class EnumItemStruct : public EnumItem | |
1770 | { | |
1771 | // bool has_struct_fields; | |
1772 | std::vector<StructField> struct_fields; | |
1773 | ||
1774 | public: | |
1775 | // Returns whether struct enum item has struct fields. | |
1776 | bool has_struct_fields () const { return !struct_fields.empty (); } | |
1777 | ||
1778 | EnumItemKind get_enum_item_kind () const override | |
1779 | { | |
1780 | return EnumItemKind::Struct; | |
1781 | } | |
1782 | ||
1783 | EnumItemStruct (Analysis::NodeMapping mappings, Identifier variant_name, | |
1784 | std::vector<StructField> struct_fields, | |
1785 | AST::AttrVec outer_attrs, Location locus) | |
1786 | : EnumItem (std::move (mappings), std::move (variant_name), | |
1787 | std::move (outer_attrs), locus), | |
1788 | struct_fields (std::move (struct_fields)) | |
1789 | {} | |
1790 | ||
1791 | std::string as_string () const override; | |
1792 | ||
1793 | void accept_vis (HIRFullVisitor &vis) override; | |
1794 | void accept_vis (HIRStmtVisitor &vis) override; | |
1795 | ||
1796 | std::vector<StructField> &get_struct_fields () { return struct_fields; } | |
1797 | ||
1798 | protected: | |
1799 | // Clone function implementation as (not pure) virtual method | |
1800 | EnumItemStruct *clone_item_impl () const override | |
1801 | { | |
1802 | return new EnumItemStruct (*this); | |
1803 | } | |
1804 | }; | |
1805 | ||
1806 | // A discriminant (numbered enum) item used in an "enum" tagged union | |
1807 | class EnumItemDiscriminant : public EnumItem | |
1808 | { | |
1809 | std::unique_ptr<Expr> expression; | |
1810 | ||
1811 | public: | |
1812 | EnumItemDiscriminant (Analysis::NodeMapping mappings, Identifier variant_name, | |
1813 | std::unique_ptr<Expr> expr, AST::AttrVec outer_attrs, | |
1814 | Location locus) | |
1815 | : EnumItem (std::move (mappings), std::move (variant_name), | |
1816 | std::move (outer_attrs), locus), | |
1817 | expression (std::move (expr)) | |
1818 | {} | |
1819 | ||
1820 | // Copy constructor with clone | |
1821 | EnumItemDiscriminant (EnumItemDiscriminant const &other) | |
1822 | : EnumItem (other), expression (other.expression->clone_expr ()) | |
1823 | {} | |
1824 | ||
1825 | // Overloaded assignment operator to clone | |
1826 | EnumItemDiscriminant &operator= (EnumItemDiscriminant const &other) | |
1827 | { | |
1828 | EnumItem::operator= (other); | |
1829 | expression = other.expression->clone_expr (); | |
1830 | // variant_name = other.variant_name; | |
1831 | // outer_attrs = other.outer_attrs; | |
1832 | ||
1833 | return *this; | |
1834 | } | |
1835 | ||
1836 | // move constructors | |
1837 | EnumItemDiscriminant (EnumItemDiscriminant &&other) = default; | |
1838 | EnumItemDiscriminant &operator= (EnumItemDiscriminant &&other) = default; | |
1839 | ||
1840 | EnumItemKind get_enum_item_kind () const override | |
1841 | { | |
1842 | return EnumItemKind::Discriminant; | |
1843 | } | |
1844 | ||
1845 | std::string as_string () const override; | |
1846 | ||
1847 | void accept_vis (HIRFullVisitor &vis) override; | |
1848 | void accept_vis (HIRStmtVisitor &vis) override; | |
1849 | ||
1850 | std::unique_ptr<Expr> &get_discriminant_expression () { return expression; } | |
1851 | ||
1852 | protected: | |
1853 | // Clone function implementation as (not pure) virtual method | |
1854 | EnumItemDiscriminant *clone_item_impl () const override | |
1855 | { | |
1856 | return new EnumItemDiscriminant (*this); | |
1857 | } | |
1858 | }; | |
1859 | ||
1860 | // HIR node for Rust "enum" - tagged union | |
1861 | class Enum : public VisItem | |
1862 | { | |
1863 | Identifier enum_name; | |
1864 | ||
1865 | // bool has_generics; | |
1866 | // Generics generic_params; | |
1867 | std::vector<std::unique_ptr<GenericParam>> generic_params; // inlined | |
1868 | ||
1869 | // bool has_where_clause; | |
1870 | WhereClause where_clause; | |
1871 | ||
1872 | std::vector<std::unique_ptr<EnumItem>> items; | |
1873 | ||
1874 | Location locus; | |
1875 | ||
1876 | public: | |
1877 | std::string as_string () const override; | |
1878 | ||
1879 | // Returns whether "enum" has generic parameters. | |
1880 | bool has_generics () const { return !generic_params.empty (); } | |
1881 | ||
1882 | // Returns whether "enum" has a where clause. | |
1883 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
1884 | ||
1885 | /* Returns whether enum is a "zero-variant" (no possible variant) enum, | |
1886 | * which cannot be instantiated. */ | |
1887 | bool is_zero_variant () const { return items.empty (); } | |
1888 | ||
1889 | // Mega-constructor | |
1890 | Enum (Analysis::NodeMapping mappings, Identifier enum_name, Visibility vis, | |
1891 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1892 | WhereClause where_clause, std::vector<std::unique_ptr<EnumItem>> items, | |
1893 | AST::AttrVec outer_attrs, Location locus) | |
1894 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
1895 | enum_name (std::move (enum_name)), | |
1896 | generic_params (std::move (generic_params)), | |
1897 | where_clause (std::move (where_clause)), items (std::move (items)), | |
1898 | locus (locus) | |
1899 | {} | |
1900 | ||
1901 | // TODO: constructor with less arguments | |
1902 | ||
1903 | // Copy constructor with vector clone | |
1904 | Enum (Enum const &other) | |
1905 | : VisItem (other), enum_name (other.enum_name), | |
1906 | where_clause (other.where_clause), locus (other.locus) | |
1907 | { | |
1908 | generic_params.reserve (other.generic_params.size ()); | |
1909 | for (const auto &e : other.generic_params) | |
1910 | generic_params.push_back (e->clone_generic_param ()); | |
1911 | ||
1912 | items.reserve (other.items.size ()); | |
1913 | for (const auto &e : other.items) | |
1914 | items.push_back (e->clone_enum_item ()); | |
1915 | } | |
1916 | ||
1917 | // Overloaded assignment operator with vector clone | |
1918 | Enum &operator= (Enum const &other) | |
1919 | { | |
1920 | VisItem::operator= (other); | |
1921 | enum_name = other.enum_name; | |
1922 | where_clause = other.where_clause; | |
1923 | locus = other.locus; | |
1924 | ||
1925 | generic_params.reserve (other.generic_params.size ()); | |
1926 | for (const auto &e : other.generic_params) | |
1927 | generic_params.push_back (e->clone_generic_param ()); | |
1928 | ||
1929 | items.reserve (other.items.size ()); | |
1930 | for (const auto &e : other.items) | |
1931 | items.push_back (e->clone_enum_item ()); | |
1932 | ||
1933 | return *this; | |
1934 | } | |
1935 | ||
1936 | // Move constructors | |
1937 | Enum (Enum &&other) = default; | |
1938 | Enum &operator= (Enum &&other) = default; | |
1939 | ||
1940 | Location get_locus () const override final { return locus; } | |
1941 | ||
1942 | void accept_vis (HIRFullVisitor &vis) override; | |
1943 | void accept_vis (HIRStmtVisitor &vis) override; | |
1944 | void accept_vis (HIRVisItemVisitor &vis) override; | |
1945 | ||
1946 | Identifier get_identifier () const { return enum_name; } | |
1947 | ItemKind get_item_kind () const override { return ItemKind::Enum; } | |
1948 | ||
1949 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
1950 | { | |
1951 | return generic_params; | |
1952 | } | |
1953 | ||
1954 | const std::vector<std::unique_ptr<EnumItem>> &get_variants () const | |
1955 | { | |
1956 | return items; | |
1957 | } | |
1958 | ||
1959 | protected: | |
1960 | /* Use covariance to implement clone function as returning this object | |
1961 | * rather than base */ | |
1962 | Enum *clone_item_impl () const override { return new Enum (*this); } | |
1963 | ||
1964 | /* Use covariance to implement clone function as returning this object | |
1965 | * rather than base */ | |
1966 | /*virtual Enum* clone_statement_impl() const override { | |
1967 | return new Enum(*this); | |
1968 | }*/ | |
1969 | }; | |
1970 | ||
1971 | // Rust untagged union used for C compat HIR node | |
1972 | class Union : public VisItem | |
1973 | { | |
1974 | Identifier union_name; | |
1975 | ||
1976 | // bool has_generics; | |
1977 | // Generics generic_params; | |
1978 | std::vector<std::unique_ptr<GenericParam>> generic_params; // inlined | |
1979 | ||
1980 | // bool has_where_clause; | |
1981 | WhereClause where_clause; | |
1982 | ||
1983 | std::vector<StructField> variants; | |
1984 | ||
1985 | Location locus; | |
1986 | ||
1987 | public: | |
1988 | std::string as_string () const override; | |
1989 | ||
1990 | // Returns whether union has generic params. | |
1991 | bool has_generics () const { return !generic_params.empty (); } | |
1992 | ||
1993 | // Returns whether union has where clause. | |
1994 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
1995 | ||
1996 | Union (Analysis::NodeMapping mappings, Identifier union_name, Visibility vis, | |
1997 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
1998 | WhereClause where_clause, std::vector<StructField> variants, | |
1999 | AST::AttrVec outer_attrs, Location locus) | |
2000 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
2001 | union_name (std::move (union_name)), | |
2002 | generic_params (std::move (generic_params)), | |
2003 | where_clause (std::move (where_clause)), variants (std::move (variants)), | |
2004 | locus (locus) | |
2005 | {} | |
2006 | ||
2007 | // copy constructor with vector clone | |
2008 | Union (Union const &other) | |
2009 | : VisItem (other), union_name (other.union_name), | |
2010 | where_clause (other.where_clause), variants (other.variants), | |
2011 | locus (other.locus) | |
2012 | { | |
2013 | generic_params.reserve (other.generic_params.size ()); | |
2014 | for (const auto &e : other.generic_params) | |
2015 | generic_params.push_back (e->clone_generic_param ()); | |
2016 | } | |
2017 | ||
2018 | // overloaded assignment operator with vector clone | |
2019 | Union &operator= (Union const &other) | |
2020 | { | |
2021 | VisItem::operator= (other); | |
2022 | union_name = other.union_name; | |
2023 | where_clause = other.where_clause; | |
2024 | variants = other.variants; | |
2025 | locus = other.locus; | |
2026 | ||
2027 | generic_params.reserve (other.generic_params.size ()); | |
2028 | for (const auto &e : other.generic_params) | |
2029 | generic_params.push_back (e->clone_generic_param ()); | |
2030 | ||
2031 | return *this; | |
2032 | } | |
2033 | ||
2034 | // move constructors | |
2035 | Union (Union &&other) = default; | |
2036 | Union &operator= (Union &&other) = default; | |
2037 | ||
2038 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
2039 | { | |
2040 | return generic_params; | |
2041 | } | |
2042 | ||
2043 | Identifier get_identifier () const { return union_name; } | |
2044 | ||
2045 | Location get_locus () const override final { return locus; } | |
2046 | ||
2047 | void accept_vis (HIRFullVisitor &vis) override; | |
2048 | void accept_vis (HIRStmtVisitor &vis) override; | |
2049 | void accept_vis (HIRVisItemVisitor &vis) override; | |
2050 | ||
2051 | std::vector<StructField> &get_variants () { return variants; } | |
2052 | ||
2053 | WhereClause &get_where_clause () { return where_clause; } | |
2054 | ||
2055 | ItemKind get_item_kind () const override { return ItemKind::Union; } | |
2056 | ||
2057 | protected: | |
2058 | /* Use covariance to implement clone function as returning this object | |
2059 | * rather than base */ | |
2060 | Union *clone_item_impl () const override { return new Union (*this); } | |
2061 | }; | |
2062 | ||
2063 | class ConstantItem : public VisItem, public ImplItem | |
2064 | { | |
2065 | Identifier identifier; | |
2066 | std::unique_ptr<Type> type; | |
2067 | std::unique_ptr<Expr> const_expr; | |
2068 | Location locus; | |
2069 | ||
2070 | public: | |
2071 | std::string as_string () const override; | |
2072 | ||
2073 | ConstantItem (Analysis::NodeMapping mappings, Identifier ident, | |
2074 | Visibility vis, std::unique_ptr<Type> type, | |
2075 | std::unique_ptr<Expr> const_expr, AST::AttrVec outer_attrs, | |
2076 | Location locus) | |
2077 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
2078 | identifier (std::move (ident)), type (std::move (type)), | |
2079 | const_expr (std::move (const_expr)), locus (locus) | |
2080 | {} | |
2081 | ||
2082 | ConstantItem (ConstantItem const &other) | |
2083 | : VisItem (other), identifier (other.identifier), | |
2084 | type (other.type->clone_type ()), | |
2085 | const_expr (other.const_expr->clone_expr ()), locus (other.locus) | |
2086 | {} | |
2087 | ||
2088 | // Overload assignment operator to clone | |
2089 | ConstantItem &operator= (ConstantItem const &other) | |
2090 | { | |
2091 | VisItem::operator= (other); | |
2092 | identifier = other.identifier; | |
2093 | type = other.type->clone_type (); | |
2094 | const_expr = other.const_expr->clone_expr (); | |
2095 | locus = other.locus; | |
2096 | ||
2097 | return *this; | |
2098 | } | |
2099 | ||
2100 | // move constructors | |
2101 | ConstantItem (ConstantItem &&other) = default; | |
2102 | ConstantItem &operator= (ConstantItem &&other) = default; | |
2103 | ||
2104 | // Returns whether constant item is an "unnamed" (wildcard underscore used | |
2105 | // as identifier) constant. | |
2106 | bool is_unnamed () const { return identifier == std::string ("_"); } | |
2107 | ||
2108 | Location get_locus () const override final { return locus; } | |
2109 | ||
2110 | void accept_vis (HIRFullVisitor &vis) override; | |
2111 | void accept_vis (HIRStmtVisitor &vis) override; | |
2112 | void accept_vis (HIRImplVisitor &vis) override; | |
2113 | void accept_vis (HIRVisItemVisitor &vis) override; | |
2114 | ||
2115 | Type *get_type () { return type.get (); } | |
2116 | ||
2117 | Expr *get_expr () { return const_expr.get (); } | |
2118 | ||
2119 | std::string get_identifier () { return identifier; } | |
2120 | ||
2121 | Analysis::NodeMapping get_impl_mappings () const override | |
2122 | { | |
2123 | return get_mappings (); | |
2124 | }; | |
2125 | ||
2126 | ImplItemType get_impl_item_type () const override final | |
2127 | { | |
2128 | return ImplItem::ImplItemType::CONSTANT; | |
2129 | } | |
2130 | ||
2131 | ItemKind get_item_kind () const override { return ItemKind::Constant; } | |
2132 | ||
2133 | protected: | |
2134 | /* Use covariance to implement clone function as returning this object | |
2135 | * rather than base */ | |
2136 | ConstantItem *clone_item_impl () const override | |
2137 | { | |
2138 | return new ConstantItem (*this); | |
2139 | } | |
2140 | ||
2141 | /* Use covariance to implement clone function as returning this object | |
2142 | * rather than base */ | |
2143 | ConstantItem *clone_inherent_impl_item_impl () const override | |
2144 | { | |
2145 | return new ConstantItem (*this); | |
2146 | } | |
2147 | }; | |
2148 | ||
2149 | /* Static item HIR node - items within module scope with fixed storage | |
2150 | * duration? */ | |
2151 | class StaticItem : public VisItem | |
2152 | { | |
2153 | Mutability mut; | |
2154 | Identifier name; | |
2155 | std::unique_ptr<Type> type; | |
2156 | std::unique_ptr<Expr> expr; | |
2157 | Location locus; | |
2158 | ||
2159 | public: | |
2160 | std::string as_string () const override; | |
2161 | ||
2162 | StaticItem (Analysis::NodeMapping mappings, Identifier name, Mutability mut, | |
2163 | std::unique_ptr<Type> type, std::unique_ptr<Expr> expr, | |
2164 | Visibility vis, AST::AttrVec outer_attrs, Location locus) | |
2165 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
2166 | mut (mut), name (std::move (name)), type (std::move (type)), | |
2167 | expr (std::move (expr)), locus (locus) | |
2168 | {} | |
2169 | ||
2170 | // Copy constructor with clone | |
2171 | StaticItem (StaticItem const &other) | |
2172 | : VisItem (other), mut (other.mut), name (other.name), | |
2173 | type (other.type->clone_type ()), expr (other.expr->clone_expr ()), | |
2174 | locus (other.locus) | |
2175 | {} | |
2176 | ||
2177 | // Overloaded assignment operator to clone | |
2178 | StaticItem &operator= (StaticItem const &other) | |
2179 | { | |
2180 | VisItem::operator= (other); | |
2181 | name = other.name; | |
2182 | mut = other.mut; | |
2183 | type = other.type->clone_type (); | |
2184 | expr = other.expr->clone_expr (); | |
2185 | locus = other.locus; | |
2186 | ||
2187 | return *this; | |
2188 | } | |
2189 | ||
2190 | // move constructors | |
2191 | StaticItem (StaticItem &&other) = default; | |
2192 | StaticItem &operator= (StaticItem &&other) = default; | |
2193 | ||
2194 | Location get_locus () const override final { return locus; } | |
2195 | ||
2196 | void accept_vis (HIRFullVisitor &vis) override; | |
2197 | void accept_vis (HIRStmtVisitor &vis) override; | |
2198 | void accept_vis (HIRVisItemVisitor &vis) override; | |
2199 | ||
2200 | Identifier get_identifier () const { return name; } | |
2201 | ||
2202 | Mutability get_mut () const { return mut; } | |
2203 | ||
2204 | bool is_mut () const { return mut == Mutability::Mut; } | |
2205 | ||
2206 | Expr *get_expr () { return expr.get (); } | |
2207 | ||
2208 | Type *get_type () { return type.get (); } | |
2209 | ||
2210 | ItemKind get_item_kind () const override { return ItemKind::Static; } | |
2211 | ||
2212 | protected: | |
2213 | StaticItem *clone_item_impl () const override | |
2214 | { | |
2215 | return new StaticItem (*this); | |
2216 | } | |
2217 | }; | |
2218 | ||
2219 | // Function declaration in traits | |
2220 | struct TraitFunctionDecl | |
2221 | { | |
2222 | private: | |
2223 | FunctionQualifiers qualifiers; | |
2224 | Identifier function_name; | |
2225 | std::vector<std::unique_ptr<GenericParam>> generic_params; | |
2226 | std::vector<FunctionParam> function_params; | |
2227 | std::unique_ptr<Type> return_type; | |
2228 | WhereClause where_clause; | |
2229 | SelfParam self; | |
2230 | ||
2231 | public: | |
2232 | // Mega-constructor | |
2233 | TraitFunctionDecl (Identifier function_name, FunctionQualifiers qualifiers, | |
2234 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
2235 | SelfParam self, std::vector<FunctionParam> function_params, | |
2236 | std::unique_ptr<Type> return_type, | |
2237 | WhereClause where_clause) | |
2238 | : qualifiers (std::move (qualifiers)), | |
2239 | function_name (std::move (function_name)), | |
2240 | generic_params (std::move (generic_params)), | |
2241 | function_params (std::move (function_params)), | |
2242 | return_type (std::move (return_type)), | |
2243 | where_clause (std::move (where_clause)), self (std::move (self)) | |
2244 | {} | |
2245 | ||
2246 | // Copy constructor with clone | |
2247 | TraitFunctionDecl (TraitFunctionDecl const &other) | |
2248 | : qualifiers (other.qualifiers), function_name (other.function_name), | |
2249 | function_params (other.function_params), | |
2250 | return_type (other.return_type->clone_type ()), | |
2251 | where_clause (other.where_clause), self (other.self) | |
2252 | { | |
2253 | generic_params.reserve (other.generic_params.size ()); | |
2254 | for (const auto &e : other.generic_params) | |
2255 | generic_params.push_back (e->clone_generic_param ()); | |
2256 | } | |
2257 | ||
2258 | ~TraitFunctionDecl () = default; | |
2259 | ||
2260 | // Overloaded assignment operator with clone | |
2261 | TraitFunctionDecl &operator= (TraitFunctionDecl const &other) | |
2262 | { | |
2263 | function_name = other.function_name; | |
2264 | qualifiers = other.qualifiers; | |
2265 | function_params = other.function_params; | |
2266 | return_type = other.return_type->clone_type (); | |
2267 | where_clause = other.where_clause; | |
2268 | self = other.self; | |
2269 | ||
2270 | generic_params.reserve (other.generic_params.size ()); | |
2271 | for (const auto &e : other.generic_params) | |
2272 | generic_params.push_back (e->clone_generic_param ()); | |
2273 | ||
2274 | return *this; | |
2275 | } | |
2276 | ||
2277 | // move constructors | |
2278 | TraitFunctionDecl (TraitFunctionDecl &&other) = default; | |
2279 | TraitFunctionDecl &operator= (TraitFunctionDecl &&other) = default; | |
2280 | ||
2281 | std::string as_string () const; | |
2282 | ||
2283 | // Returns whether function decl has generic parameters. | |
2284 | bool has_generics () const { return !generic_params.empty (); } | |
2285 | ||
2286 | // Returns whether function decl has regular parameters. | |
2287 | bool has_params () const { return !function_params.empty (); } | |
2288 | ||
2289 | // Returns whether function has return type (otherwise is void). | |
2290 | bool has_return_type () const { return return_type != nullptr; } | |
2291 | ||
2292 | // Returns whether function has a where clause. | |
2293 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
2294 | ||
2295 | bool is_method () const { return !self.is_error (); } | |
2296 | ||
2297 | SelfParam &get_self () { return self; } | |
2298 | ||
2299 | Identifier get_function_name () const { return function_name; } | |
2300 | ||
2301 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
2302 | { | |
2303 | return generic_params; | |
2304 | } | |
2305 | ||
2306 | std::unique_ptr<Type> &get_return_type () | |
2307 | { | |
2308 | rust_assert (has_return_type ()); | |
2309 | return return_type; | |
2310 | } | |
2311 | ||
2312 | std::vector<FunctionParam> &get_function_params () { return function_params; } | |
2313 | ||
2314 | const FunctionQualifiers &get_qualifiers () const { return qualifiers; } | |
2315 | }; | |
2316 | ||
2317 | // Actual trait item function declaration within traits | |
2318 | class TraitItemFunc : public TraitItem | |
2319 | { | |
2320 | AST::AttrVec outer_attrs; | |
2321 | TraitFunctionDecl decl; | |
2322 | std::unique_ptr<BlockExpr> block_expr; | |
2323 | Location locus; | |
2324 | ||
2325 | public: | |
2326 | // Returns whether function has a definition or is just a declaration. | |
2327 | bool has_definition () const { return block_expr != nullptr; } | |
2328 | ||
2329 | TraitItemFunc (Analysis::NodeMapping mappings, TraitFunctionDecl decl, | |
2330 | std::unique_ptr<BlockExpr> block_expr, | |
2331 | AST::AttrVec outer_attrs, Location locus) | |
2332 | : TraitItem (mappings), outer_attrs (std::move (outer_attrs)), | |
2333 | decl (std::move (decl)), block_expr (std::move (block_expr)), | |
2334 | locus (locus) | |
2335 | {} | |
2336 | ||
2337 | // Copy constructor with clone | |
2338 | TraitItemFunc (TraitItemFunc const &other) | |
2339 | : TraitItem (other.mappings), outer_attrs (other.outer_attrs), | |
2340 | decl (other.decl), locus (other.locus) | |
2341 | { | |
2342 | if (other.block_expr != nullptr) | |
2343 | block_expr = other.block_expr->clone_block_expr (); | |
2344 | } | |
2345 | ||
2346 | // Overloaded assignment operator to clone | |
2347 | TraitItemFunc &operator= (TraitItemFunc const &other) | |
2348 | { | |
2349 | TraitItem::operator= (other); | |
2350 | outer_attrs = other.outer_attrs; | |
2351 | decl = other.decl; | |
2352 | locus = other.locus; | |
2353 | mappings = other.mappings; | |
2354 | if (other.block_expr != nullptr) | |
2355 | block_expr = other.block_expr->clone_block_expr (); | |
2356 | ||
2357 | return *this; | |
2358 | } | |
2359 | ||
2360 | // move constructors | |
2361 | TraitItemFunc (TraitItemFunc &&other) = default; | |
2362 | TraitItemFunc &operator= (TraitItemFunc &&other) = default; | |
2363 | ||
2364 | std::string as_string () const override; | |
2365 | ||
2366 | Location get_locus () const { return locus; } | |
2367 | ||
2368 | void accept_vis (HIRFullVisitor &vis) override; | |
2369 | void accept_vis (HIRTraitItemVisitor &vis) override; | |
2370 | ||
2371 | TraitFunctionDecl &get_decl () { return decl; } | |
2372 | ||
2373 | const TraitFunctionDecl &get_decl () const { return decl; } | |
2374 | ||
2375 | bool has_block_defined () const { return block_expr != nullptr; } | |
2376 | ||
2377 | std::unique_ptr<BlockExpr> &get_block_expr () | |
2378 | { | |
2379 | rust_assert (has_block_defined ()); | |
2380 | return block_expr; | |
2381 | } | |
2382 | ||
2383 | const std::string trait_identifier () const override final | |
2384 | { | |
2385 | return decl.get_function_name (); | |
2386 | } | |
2387 | ||
2388 | TraitItemKind get_item_kind () const override final | |
2389 | { | |
2390 | return TraitItemKind::FUNC; | |
2391 | } | |
2392 | ||
2393 | AST::AttrVec &get_outer_attrs () override final { return outer_attrs; } | |
2394 | const AST::AttrVec &get_outer_attrs () const override final | |
2395 | { | |
2396 | return outer_attrs; | |
2397 | } | |
2398 | ||
8f0b1526 PH |
2399 | Location get_trait_locus () const override { return get_locus (); } |
2400 | ||
8ad1d56d PH |
2401 | protected: |
2402 | // Clone function implementation as (not pure) virtual method | |
2403 | TraitItemFunc *clone_trait_item_impl () const override | |
2404 | { | |
2405 | return new TraitItemFunc (*this); | |
2406 | } | |
2407 | }; | |
2408 | ||
2409 | // Constant item within traits | |
2410 | class TraitItemConst : public TraitItem | |
2411 | { | |
2412 | AST::AttrVec outer_attrs; | |
2413 | Identifier name; | |
2414 | std::unique_ptr<Type> type; | |
2415 | std::unique_ptr<Expr> expr; | |
2416 | Location locus; | |
2417 | ||
2418 | public: | |
2419 | // Whether the constant item has an associated expression. | |
2420 | bool has_expression () const { return expr != nullptr; } | |
2421 | ||
2422 | TraitItemConst (Analysis::NodeMapping mappings, Identifier name, | |
2423 | std::unique_ptr<Type> type, std::unique_ptr<Expr> expr, | |
2424 | AST::AttrVec outer_attrs, Location locus) | |
2425 | : TraitItem (mappings), outer_attrs (std::move (outer_attrs)), | |
2426 | name (std::move (name)), type (std::move (type)), expr (std::move (expr)), | |
2427 | locus (locus) | |
2428 | {} | |
2429 | ||
2430 | // Copy constructor with clones | |
2431 | TraitItemConst (TraitItemConst const &other) | |
2432 | : TraitItem (other.mappings), outer_attrs (other.outer_attrs), | |
2433 | name (other.name), type (other.type->clone_type ()), | |
2434 | expr (other.expr->clone_expr ()), locus (other.locus) | |
2435 | {} | |
2436 | ||
2437 | // Overloaded assignment operator to clone | |
2438 | TraitItemConst &operator= (TraitItemConst const &other) | |
2439 | { | |
2440 | TraitItem::operator= (other); | |
2441 | outer_attrs = other.outer_attrs; | |
2442 | name = other.name; | |
2443 | type = other.type->clone_type (); | |
2444 | expr = other.expr->clone_expr (); | |
2445 | locus = other.locus; | |
2446 | mappings = other.mappings; | |
2447 | ||
2448 | return *this; | |
2449 | } | |
2450 | ||
2451 | // move constructors | |
2452 | TraitItemConst (TraitItemConst &&other) = default; | |
2453 | TraitItemConst &operator= (TraitItemConst &&other) = default; | |
2454 | ||
2455 | std::string as_string () const override; | |
2456 | ||
2457 | Location get_locus () const { return locus; } | |
2458 | ||
2459 | void accept_vis (HIRFullVisitor &vis) override; | |
2460 | void accept_vis (HIRTraitItemVisitor &vis) override; | |
2461 | ||
2462 | Identifier get_name () const { return name; } | |
2463 | ||
2464 | bool has_expr () const { return expr != nullptr; } | |
2465 | ||
2466 | std::unique_ptr<Type> &get_type () { return type; } | |
2467 | ||
2468 | std::unique_ptr<Expr> &get_expr () | |
2469 | { | |
2470 | rust_assert (has_expr ()); | |
2471 | return expr; | |
2472 | } | |
2473 | ||
2474 | const std::string trait_identifier () const override final { return name; } | |
2475 | ||
2476 | TraitItemKind get_item_kind () const override final | |
2477 | { | |
2478 | return TraitItemKind::CONST; | |
2479 | } | |
2480 | ||
2481 | AST::AttrVec &get_outer_attrs () override final { return outer_attrs; } | |
2482 | const AST::AttrVec &get_outer_attrs () const override final | |
2483 | { | |
2484 | return outer_attrs; | |
2485 | } | |
2486 | ||
8f0b1526 PH |
2487 | Location get_trait_locus () const override { return get_locus (); } |
2488 | ||
8ad1d56d PH |
2489 | protected: |
2490 | // Clone function implementation as (not pure) virtual method | |
2491 | TraitItemConst *clone_trait_item_impl () const override | |
2492 | { | |
2493 | return new TraitItemConst (*this); | |
2494 | } | |
2495 | }; | |
2496 | ||
2497 | // Type items within traits | |
2498 | class TraitItemType : public TraitItem | |
2499 | { | |
2500 | AST::AttrVec outer_attrs; | |
2501 | ||
2502 | Identifier name; | |
2503 | std::vector<std::unique_ptr<TypeParamBound>> | |
2504 | type_param_bounds; // inlined form | |
2505 | Location locus; | |
2506 | ||
2507 | public: | |
2508 | // Returns whether trait item type has type param bounds. | |
2509 | bool has_type_param_bounds () const { return !type_param_bounds.empty (); } | |
2510 | ||
2511 | TraitItemType (Analysis::NodeMapping mappings, Identifier name, | |
2512 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds, | |
2513 | AST::AttrVec outer_attrs, Location locus) | |
2514 | : TraitItem (mappings), outer_attrs (std::move (outer_attrs)), | |
2515 | name (std::move (name)), | |
2516 | type_param_bounds (std::move (type_param_bounds)), locus (locus) | |
2517 | {} | |
2518 | ||
2519 | // Copy constructor with vector clone | |
2520 | TraitItemType (TraitItemType const &other) | |
2521 | : TraitItem (other.mappings), outer_attrs (other.outer_attrs), | |
2522 | name (other.name), locus (other.locus) | |
2523 | { | |
2524 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
2525 | for (const auto &e : other.type_param_bounds) | |
2526 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
2527 | } | |
2528 | ||
2529 | // Overloaded assignment operator with vector clone | |
2530 | TraitItemType &operator= (TraitItemType const &other) | |
2531 | { | |
2532 | TraitItem::operator= (other); | |
2533 | outer_attrs = other.outer_attrs; | |
2534 | name = other.name; | |
2535 | locus = other.locus; | |
2536 | mappings = other.mappings; | |
2537 | ||
2538 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
2539 | for (const auto &e : other.type_param_bounds) | |
2540 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
2541 | ||
2542 | return *this; | |
2543 | } | |
2544 | ||
2545 | // default move constructors | |
2546 | TraitItemType (TraitItemType &&other) = default; | |
2547 | TraitItemType &operator= (TraitItemType &&other) = default; | |
2548 | ||
2549 | std::string as_string () const override; | |
2550 | ||
2551 | Location get_locus () const { return locus; } | |
2552 | ||
2553 | void accept_vis (HIRFullVisitor &vis) override; | |
2554 | void accept_vis (HIRTraitItemVisitor &vis) override; | |
2555 | ||
2556 | Identifier get_name () const { return name; } | |
2557 | ||
2558 | std::vector<std::unique_ptr<TypeParamBound>> &get_type_param_bounds () | |
2559 | { | |
2560 | return type_param_bounds; | |
2561 | } | |
2562 | ||
2563 | const std::string trait_identifier () const override final { return name; } | |
2564 | ||
2565 | TraitItemKind get_item_kind () const override final | |
2566 | { | |
2567 | return TraitItemKind::TYPE; | |
2568 | } | |
2569 | ||
2570 | AST::AttrVec &get_outer_attrs () override final { return outer_attrs; } | |
2571 | const AST::AttrVec &get_outer_attrs () const override final | |
2572 | { | |
2573 | return outer_attrs; | |
2574 | } | |
2575 | ||
8f0b1526 PH |
2576 | Location get_trait_locus () const override { return get_locus (); } |
2577 | ||
8ad1d56d PH |
2578 | protected: |
2579 | // Clone function implementation as (not pure) virtual method | |
2580 | TraitItemType *clone_trait_item_impl () const override | |
2581 | { | |
2582 | return new TraitItemType (*this); | |
2583 | } | |
2584 | }; | |
2585 | ||
2586 | // Rust trait item declaration HIR node | |
2587 | class Trait : public VisItem | |
2588 | { | |
2589 | Unsafety unsafety; | |
2590 | Identifier name; | |
2591 | std::vector<std::unique_ptr<GenericParam>> generic_params; | |
2592 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds; | |
2593 | WhereClause where_clause; | |
2594 | std::vector<std::unique_ptr<TraitItem>> trait_items; | |
2595 | Location locus; | |
2596 | ||
2597 | public: | |
2598 | std::string as_string () const override; | |
2599 | ||
2600 | // Returns whether trait has generic parameters. | |
2601 | bool has_generics () const { return !generic_params.empty (); } | |
2602 | ||
2603 | // Returns whether trait has type parameter bounds. | |
2604 | bool has_type_param_bounds () const { return !type_param_bounds.empty (); } | |
2605 | ||
2606 | // Returns whether trait has where clause. | |
2607 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
2608 | ||
2609 | // Returns whether trait has trait items. | |
2610 | bool has_trait_items () const { return !trait_items.empty (); } | |
2611 | ||
2612 | std::vector<std::unique_ptr<TraitItem>> &get_trait_items () | |
2613 | { | |
2614 | return trait_items; | |
2615 | } | |
2616 | ||
2617 | Identifier get_name () const { return name; } | |
2618 | ||
2619 | // Mega-constructor | |
2620 | Trait (Analysis::NodeMapping mappings, Identifier name, Unsafety unsafety, | |
2621 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
2622 | std::vector<std::unique_ptr<TypeParamBound>> type_param_bounds, | |
2623 | WhereClause where_clause, | |
2624 | std::vector<std::unique_ptr<TraitItem>> trait_items, Visibility vis, | |
2625 | AST::AttrVec outer_attrs, Location locus) | |
2626 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
2627 | unsafety (unsafety), name (std::move (name)), | |
2628 | generic_params (std::move (generic_params)), | |
2629 | type_param_bounds (std::move (type_param_bounds)), | |
2630 | where_clause (std::move (where_clause)), | |
2631 | trait_items (std::move (trait_items)), locus (locus) | |
2632 | {} | |
2633 | ||
2634 | // Copy constructor with vector clone | |
2635 | Trait (Trait const &other) | |
2636 | : VisItem (other), unsafety (other.unsafety), name (other.name), | |
2637 | where_clause (other.where_clause), locus (other.locus) | |
2638 | { | |
2639 | generic_params.reserve (other.generic_params.size ()); | |
2640 | for (const auto &e : other.generic_params) | |
2641 | generic_params.push_back (e->clone_generic_param ()); | |
2642 | ||
2643 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
2644 | for (const auto &e : other.type_param_bounds) | |
2645 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
2646 | ||
2647 | trait_items.reserve (other.trait_items.size ()); | |
2648 | for (const auto &e : other.trait_items) | |
2649 | trait_items.push_back (e->clone_trait_item ()); | |
2650 | } | |
2651 | ||
2652 | // Overloaded assignment operator with vector clone | |
2653 | Trait &operator= (Trait const &other) | |
2654 | { | |
2655 | VisItem::operator= (other); | |
2656 | name = other.name; | |
2657 | unsafety = other.unsafety; | |
2658 | where_clause = other.where_clause; | |
2659 | locus = other.locus; | |
2660 | ||
2661 | generic_params.reserve (other.generic_params.size ()); | |
2662 | for (const auto &e : other.generic_params) | |
2663 | generic_params.push_back (e->clone_generic_param ()); | |
2664 | ||
2665 | type_param_bounds.reserve (other.type_param_bounds.size ()); | |
2666 | for (const auto &e : other.type_param_bounds) | |
2667 | type_param_bounds.push_back (e->clone_type_param_bound ()); | |
2668 | ||
2669 | trait_items.reserve (other.trait_items.size ()); | |
2670 | for (const auto &e : other.trait_items) | |
2671 | trait_items.push_back (e->clone_trait_item ()); | |
2672 | ||
2673 | return *this; | |
2674 | } | |
2675 | ||
2676 | // default move constructors | |
2677 | Trait (Trait &&other) = default; | |
2678 | Trait &operator= (Trait &&other) = default; | |
2679 | ||
2680 | Location get_locus () const override final { return locus; } | |
2681 | ||
2682 | void accept_vis (HIRFullVisitor &vis) override; | |
2683 | void accept_vis (HIRStmtVisitor &vis) override; | |
2684 | void accept_vis (HIRVisItemVisitor &vis) override; | |
2685 | ||
2686 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
2687 | { | |
2688 | return generic_params; | |
2689 | } | |
2690 | ||
2691 | const std::vector<std::unique_ptr<GenericParam>> &get_generic_params () const | |
2692 | { | |
2693 | return generic_params; | |
2694 | } | |
2695 | ||
2696 | std::vector<std::unique_ptr<TypeParamBound>> &get_type_param_bounds () | |
2697 | { | |
2698 | return type_param_bounds; | |
2699 | } | |
2700 | ||
2701 | const std::vector<std::unique_ptr<TypeParamBound>> & | |
2702 | get_type_param_bounds () const | |
2703 | { | |
2704 | return type_param_bounds; | |
2705 | } | |
2706 | ||
2707 | ItemKind get_item_kind () const override { return ItemKind::Trait; } | |
2708 | ||
2709 | protected: | |
2710 | /* Use covariance to implement clone function as returning this object | |
2711 | * rather than base */ | |
2712 | Trait *clone_item_impl () const override { return new Trait (*this); } | |
2713 | }; | |
2714 | ||
2715 | class ImplBlock : public VisItem | |
2716 | { | |
2717 | std::vector<std::unique_ptr<GenericParam>> generic_params; | |
2718 | std::unique_ptr<Type> impl_type; | |
2719 | std::unique_ptr<TypePath> trait_ref; | |
2720 | WhereClause where_clause; | |
2721 | Polarity polarity; | |
2722 | AST::AttrVec inner_attrs; | |
2723 | Location locus; | |
2724 | std::vector<std::unique_ptr<ImplItem>> impl_items; | |
2725 | ||
2726 | public: | |
2727 | ImplBlock (Analysis::NodeMapping mappings, | |
2728 | std::vector<std::unique_ptr<ImplItem>> impl_items, | |
2729 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
2730 | std::unique_ptr<Type> impl_type, | |
2731 | std::unique_ptr<TypePath> trait_ref, WhereClause where_clause, | |
2732 | Polarity polarity, Visibility vis, AST::AttrVec inner_attrs, | |
2733 | AST::AttrVec outer_attrs, Location locus) | |
2734 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
2735 | generic_params (std::move (generic_params)), | |
2736 | impl_type (std::move (impl_type)), trait_ref (std::move (trait_ref)), | |
2737 | where_clause (std::move (where_clause)), polarity (polarity), | |
2738 | inner_attrs (std::move (inner_attrs)), locus (locus), | |
2739 | impl_items (std::move (impl_items)) | |
2740 | {} | |
2741 | ||
2742 | ImplBlock (ImplBlock const &other) | |
2743 | : VisItem (other), impl_type (other.impl_type->clone_type ()), | |
2744 | where_clause (other.where_clause), polarity (other.polarity), | |
2745 | inner_attrs (other.inner_attrs), locus (other.locus) | |
2746 | { | |
2747 | generic_params.reserve (other.generic_params.size ()); | |
2748 | for (const auto &e : other.generic_params) | |
2749 | generic_params.push_back (e->clone_generic_param ()); | |
2750 | ||
2751 | impl_items.reserve (other.impl_items.size ()); | |
2752 | for (const auto &e : other.impl_items) | |
2753 | impl_items.push_back (e->clone_inherent_impl_item ()); | |
2754 | } | |
2755 | ||
2756 | ImplBlock &operator= (ImplBlock const &other) | |
2757 | { | |
2758 | VisItem::operator= (other); | |
2759 | impl_type = other.impl_type->clone_type (); | |
2760 | where_clause = other.where_clause; | |
2761 | polarity = other.polarity; | |
2762 | inner_attrs = other.inner_attrs; | |
2763 | locus = other.locus; | |
2764 | ||
2765 | generic_params.reserve (other.generic_params.size ()); | |
2766 | for (const auto &e : other.generic_params) | |
2767 | generic_params.push_back (e->clone_generic_param ()); | |
2768 | ||
2769 | impl_items.reserve (other.impl_items.size ()); | |
2770 | for (const auto &e : other.impl_items) | |
2771 | impl_items.push_back (e->clone_inherent_impl_item ()); | |
2772 | ||
2773 | return *this; | |
2774 | } | |
2775 | ||
2776 | ImplBlock (ImplBlock &&other) = default; | |
2777 | ImplBlock &operator= (ImplBlock &&other) = default; | |
2778 | ||
2779 | std::string as_string () const override; | |
2780 | ||
2781 | // Returns whether inherent impl block has inherent impl items. | |
2782 | bool has_impl_items () const { return !impl_items.empty (); } | |
2783 | ||
2784 | void accept_vis (HIRFullVisitor &vis) override; | |
2785 | void accept_vis (HIRStmtVisitor &vis) override; | |
2786 | void accept_vis (HIRVisItemVisitor &vis) override; | |
2787 | ||
2788 | std::vector<std::unique_ptr<ImplItem>> &get_impl_items () | |
2789 | { | |
2790 | return impl_items; | |
2791 | }; | |
2792 | ||
2793 | const std::vector<std::unique_ptr<ImplItem>> &get_impl_items () const | |
2794 | { | |
2795 | return impl_items; | |
2796 | }; | |
2797 | ||
2798 | // Returns whether impl has generic parameters. | |
2799 | bool has_generics () const { return !generic_params.empty (); } | |
2800 | ||
2801 | // Returns whether impl has where clause. | |
2802 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
2803 | ||
2804 | // Returns the polarity of the impl. | |
2805 | Polarity get_polarity () const { return polarity; } | |
2806 | ||
2807 | // Returns whether impl has inner attributes. | |
2808 | bool has_inner_attrs () const { return !inner_attrs.empty (); } | |
2809 | ||
2810 | Location get_locus () const override final { return locus; } | |
2811 | ||
2812 | std::unique_ptr<Type> &get_type () { return impl_type; }; | |
2813 | ||
2814 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
2815 | { | |
2816 | return generic_params; | |
2817 | } | |
2818 | ||
2819 | bool has_trait_ref () const { return trait_ref != nullptr; } | |
2820 | ||
2821 | std::unique_ptr<TypePath> &get_trait_ref () | |
2822 | { | |
2823 | rust_assert (has_trait_ref ()); | |
2824 | return trait_ref; | |
2825 | } | |
2826 | ||
2827 | WhereClause &get_where_clause () { return where_clause; } | |
2828 | ||
2829 | ItemKind get_item_kind () const override { return ItemKind::Impl; } | |
2830 | ||
2831 | protected: | |
2832 | ImplBlock *clone_item_impl () const override { return new ImplBlock (*this); } | |
2833 | }; | |
2834 | ||
2835 | // Abstract base class for an item used inside an extern block | |
2836 | class ExternalItem : public Node | |
2837 | { | |
2838 | Analysis::NodeMapping mappings; | |
2839 | AST::AttrVec outer_attrs; | |
2840 | Visibility visibility; | |
2841 | Identifier item_name; | |
2842 | Location locus; | |
2843 | ||
2844 | public: | |
2845 | enum class ExternKind | |
2846 | { | |
2847 | Static, | |
2848 | Function, | |
2849 | }; | |
2850 | ||
2851 | virtual ~ExternalItem () {} | |
2852 | ||
2853 | BaseKind get_hir_kind () override final { return EXTERNAL; } | |
2854 | ||
2855 | virtual ExternKind get_extern_kind () = 0; | |
2856 | ||
2857 | // Returns whether item has outer attributes. | |
2858 | bool has_outer_attrs () const { return !outer_attrs.empty (); } | |
2859 | ||
2860 | // Returns whether item has non-default visibility. | |
2861 | bool has_visibility () const { return !visibility.is_error (); } | |
2862 | ||
2863 | // Unique pointer custom clone function | |
2864 | std::unique_ptr<ExternalItem> clone_external_item () const | |
2865 | { | |
2866 | return std::unique_ptr<ExternalItem> (clone_external_item_impl ()); | |
2867 | } | |
2868 | ||
2869 | virtual std::string as_string () const; | |
2870 | ||
2871 | Location get_locus () const { return locus; } | |
2872 | ||
2873 | virtual void accept_vis (HIRFullVisitor &vis) = 0; | |
2874 | virtual void accept_vis (HIRExternalItemVisitor &vis) = 0; | |
2875 | ||
2876 | Analysis::NodeMapping get_mappings () const { return mappings; } | |
2877 | ||
2878 | Identifier get_item_name () const { return item_name; } | |
2879 | ||
2880 | AST::AttrVec &get_outer_attrs () { return outer_attrs; } | |
2881 | ||
2882 | protected: | |
2883 | ExternalItem (Analysis::NodeMapping mappings, Identifier item_name, | |
2884 | Visibility vis, AST::AttrVec outer_attrs, Location locus) | |
2885 | : mappings (mappings), outer_attrs (std::move (outer_attrs)), | |
2886 | visibility (std::move (vis)), item_name (std::move (item_name)), | |
2887 | locus (locus) | |
2888 | {} | |
2889 | ||
2890 | // Copy constructor | |
2891 | ExternalItem (ExternalItem const &other) | |
2892 | : mappings (other.mappings), outer_attrs (other.outer_attrs), | |
2893 | visibility (other.visibility), item_name (other.item_name), | |
2894 | locus (other.locus) | |
2895 | {} | |
2896 | ||
2897 | // Overloaded assignment operator to clone | |
2898 | ExternalItem &operator= (ExternalItem const &other) | |
2899 | { | |
2900 | mappings = other.mappings; | |
2901 | item_name = other.item_name; | |
2902 | visibility = other.visibility; | |
2903 | outer_attrs = other.outer_attrs; | |
2904 | locus = other.locus; | |
2905 | ||
2906 | return *this; | |
2907 | } | |
2908 | ||
2909 | // move constructors | |
2910 | ExternalItem (ExternalItem &&other) = default; | |
2911 | ExternalItem &operator= (ExternalItem &&other) = default; | |
2912 | ||
2913 | // Clone function implementation as pure virtual method | |
2914 | virtual ExternalItem *clone_external_item_impl () const = 0; | |
2915 | }; | |
2916 | ||
2917 | // A static item used in an extern block | |
2918 | class ExternalStaticItem : public ExternalItem | |
2919 | { | |
2920 | Mutability mut; | |
2921 | std::unique_ptr<Type> item_type; | |
2922 | ||
2923 | public: | |
2924 | ExternalStaticItem (Analysis::NodeMapping mappings, Identifier item_name, | |
2925 | std::unique_ptr<Type> item_type, Mutability mut, | |
2926 | Visibility vis, AST::AttrVec outer_attrs, Location locus) | |
2927 | : ExternalItem (std::move (mappings), std::move (item_name), | |
2928 | std::move (vis), std::move (outer_attrs), locus), | |
2929 | mut (mut), item_type (std::move (item_type)) | |
2930 | {} | |
2931 | ||
2932 | // Copy constructor | |
2933 | ExternalStaticItem (ExternalStaticItem const &other) | |
2934 | : ExternalItem (other), mut (other.mut), | |
2935 | item_type (other.item_type->clone_type ()) | |
2936 | {} | |
2937 | ||
2938 | // Overloaded assignment operator to clone | |
2939 | ExternalStaticItem &operator= (ExternalStaticItem const &other) | |
2940 | { | |
2941 | ExternalItem::operator= (other); | |
2942 | item_type = other.item_type->clone_type (); | |
2943 | mut = other.mut; | |
2944 | ||
2945 | return *this; | |
2946 | } | |
2947 | ||
2948 | // move constructors | |
2949 | ExternalStaticItem (ExternalStaticItem &&other) = default; | |
2950 | ExternalStaticItem &operator= (ExternalStaticItem &&other) = default; | |
2951 | ||
2952 | std::string as_string () const override; | |
2953 | ||
2954 | void accept_vis (HIRFullVisitor &vis) override; | |
2955 | void accept_vis (HIRExternalItemVisitor &vis) override; | |
2956 | ||
2957 | bool is_mut () const { return mut == Mutability::Mut; } | |
2958 | ||
2959 | Mutability get_mut () { return mut; } | |
2960 | ||
2961 | std::unique_ptr<Type> &get_item_type () { return item_type; } | |
2962 | ||
2963 | ExternKind get_extern_kind () override { return ExternKind::Static; } | |
2964 | ||
2965 | protected: | |
2966 | /* Use covariance to implement clone function as returning this object | |
2967 | * rather than base */ | |
2968 | ExternalStaticItem *clone_external_item_impl () const override | |
2969 | { | |
2970 | return new ExternalStaticItem (*this); | |
2971 | } | |
2972 | }; | |
2973 | ||
2974 | // A named function parameter used in external functions | |
2975 | struct NamedFunctionParam | |
2976 | { | |
2977 | private: | |
2978 | Identifier name; | |
2979 | std::unique_ptr<Type> param_type; | |
2980 | Analysis::NodeMapping mappings; | |
2981 | ||
2982 | public: | |
2983 | bool has_name () const { return name != "_"; } | |
2984 | ||
2985 | NamedFunctionParam (Analysis::NodeMapping mappings, Identifier name, | |
2986 | std::unique_ptr<Type> param_type) | |
2987 | : name (std::move (name)), param_type (std::move (param_type)), | |
2988 | mappings (std::move (mappings)) | |
2989 | {} | |
2990 | ||
2991 | // Copy constructor | |
2992 | NamedFunctionParam (NamedFunctionParam const &other) | |
2993 | : name (other.name), param_type (other.param_type->clone_type ()), | |
2994 | mappings (other.mappings) | |
2995 | {} | |
2996 | ||
2997 | ~NamedFunctionParam () = default; | |
2998 | ||
2999 | // Overloaded assignment operator to clone | |
3000 | NamedFunctionParam &operator= (NamedFunctionParam const &other) | |
3001 | { | |
3002 | mappings = other.mappings; | |
3003 | name = other.name; | |
3004 | param_type = other.param_type->clone_type (); | |
3005 | // has_name = other.has_name; | |
3006 | ||
3007 | return *this; | |
3008 | } | |
3009 | ||
3010 | // move constructors | |
3011 | NamedFunctionParam (NamedFunctionParam &&other) = default; | |
3012 | NamedFunctionParam &operator= (NamedFunctionParam &&other) = default; | |
3013 | ||
3014 | std::string as_string () const; | |
3015 | ||
3016 | Identifier get_param_name () const { return name; } | |
3017 | ||
3018 | std::unique_ptr<Type> &get_type () { return param_type; } | |
3019 | ||
3020 | Analysis::NodeMapping get_mappings () const { return mappings; } | |
3021 | }; | |
3022 | ||
3023 | // A function item used in an extern block | |
3024 | class ExternalFunctionItem : public ExternalItem | |
3025 | { | |
3026 | // bool has_generics; | |
3027 | // Generics generic_params; | |
3028 | std::vector<std::unique_ptr<GenericParam>> generic_params; // inlined | |
3029 | ||
3030 | // bool has_return_type; | |
3031 | // FunctionReturnType return_type; | |
3032 | std::unique_ptr<Type> return_type; // inlined | |
3033 | ||
3034 | // bool has_where_clause; | |
3035 | WhereClause where_clause; | |
3036 | ||
3037 | std::vector<NamedFunctionParam> function_params; | |
3038 | bool has_variadics; | |
3039 | ||
3040 | public: | |
3041 | // Returns whether item has generic parameters. | |
3042 | bool has_generics () const { return !generic_params.empty (); } | |
3043 | ||
3044 | // Returns whether item has a return type (otherwise void). | |
3045 | bool has_return_type () const { return return_type != nullptr; } | |
3046 | ||
3047 | // Returns whether item has a where clause. | |
3048 | bool has_where_clause () const { return !where_clause.is_empty (); } | |
3049 | ||
3050 | ExternalFunctionItem ( | |
3051 | Analysis::NodeMapping mappings, Identifier item_name, | |
3052 | std::vector<std::unique_ptr<GenericParam>> generic_params, | |
3053 | std::unique_ptr<Type> return_type, WhereClause where_clause, | |
3054 | std::vector<NamedFunctionParam> function_params, bool has_variadics, | |
3055 | Visibility vis, AST::AttrVec outer_attrs, Location locus) | |
3056 | : ExternalItem (std::move (mappings), std::move (item_name), | |
3057 | std::move (vis), std::move (outer_attrs), locus), | |
3058 | generic_params (std::move (generic_params)), | |
3059 | return_type (std::move (return_type)), | |
3060 | where_clause (std::move (where_clause)), | |
3061 | function_params (std::move (function_params)), | |
3062 | has_variadics (has_variadics) | |
3063 | {} | |
3064 | ||
3065 | // Copy constructor with clone | |
3066 | ExternalFunctionItem (ExternalFunctionItem const &other) | |
3067 | : ExternalItem (other), return_type (other.return_type->clone_type ()), | |
3068 | where_clause (other.where_clause), | |
3069 | function_params (other.function_params), | |
3070 | has_variadics (other.has_variadics) | |
3071 | { | |
3072 | generic_params.reserve (other.generic_params.size ()); | |
3073 | for (const auto &e : other.generic_params) | |
3074 | generic_params.push_back (e->clone_generic_param ()); | |
3075 | } | |
3076 | ||
3077 | // Overloaded assignment operator with clone | |
3078 | ExternalFunctionItem &operator= (ExternalFunctionItem const &other) | |
3079 | { | |
3080 | ExternalItem::operator= (other); | |
3081 | return_type = other.return_type->clone_type (); | |
3082 | where_clause = other.where_clause; | |
3083 | function_params = other.function_params; | |
3084 | has_variadics = other.has_variadics; | |
3085 | ||
3086 | generic_params.reserve (other.generic_params.size ()); | |
3087 | for (const auto &e : other.generic_params) | |
3088 | generic_params.push_back (e->clone_generic_param ()); | |
3089 | ||
3090 | return *this; | |
3091 | } | |
3092 | ||
3093 | // move constructors | |
3094 | ExternalFunctionItem (ExternalFunctionItem &&other) = default; | |
3095 | ExternalFunctionItem &operator= (ExternalFunctionItem &&other) = default; | |
3096 | ||
3097 | std::string as_string () const override; | |
3098 | ||
3099 | void accept_vis (HIRFullVisitor &vis) override; | |
3100 | void accept_vis (HIRExternalItemVisitor &vis) override; | |
3101 | ||
3102 | std::vector<std::unique_ptr<GenericParam>> &get_generic_params () | |
3103 | { | |
3104 | return generic_params; | |
3105 | } | |
3106 | ||
3107 | std::unique_ptr<Type> &get_return_type () { return return_type; } | |
3108 | ||
3109 | std::vector<NamedFunctionParam> &get_function_params () | |
3110 | { | |
3111 | return function_params; | |
3112 | } | |
3113 | ||
3114 | bool is_variadic () const { return has_variadics; } | |
3115 | ||
3116 | ExternKind get_extern_kind () override { return ExternKind::Function; } | |
3117 | ||
3118 | protected: | |
3119 | /* Use covariance to implement clone function as returning this object | |
3120 | * rather than base */ | |
3121 | ExternalFunctionItem *clone_external_item_impl () const override | |
3122 | { | |
3123 | return new ExternalFunctionItem (*this); | |
3124 | } | |
3125 | }; | |
3126 | ||
3127 | // An extern block HIR node | |
3128 | class ExternBlock : public VisItem | |
3129 | { | |
3130 | ABI abi; | |
3131 | AST::AttrVec inner_attrs; | |
3132 | std::vector<std::unique_ptr<ExternalItem>> extern_items; | |
3133 | Location locus; | |
3134 | ||
3135 | public: | |
3136 | std::string as_string () const override; | |
3137 | ||
3138 | // Returns whether extern block has inner attributes. | |
3139 | bool has_inner_attrs () const { return !inner_attrs.empty (); } | |
3140 | ||
3141 | // Returns whether extern block has extern items. | |
3142 | bool has_extern_items () const { return !extern_items.empty (); } | |
3143 | ||
3144 | ABI get_abi () const { return abi; } | |
3145 | ||
3146 | ExternBlock (Analysis::NodeMapping mappings, ABI abi, | |
3147 | std::vector<std::unique_ptr<ExternalItem>> extern_items, | |
3148 | Visibility vis, AST::AttrVec inner_attrs, | |
3149 | AST::AttrVec outer_attrs, Location locus) | |
3150 | : VisItem (std::move (mappings), std::move (vis), std::move (outer_attrs)), | |
3151 | abi (abi), inner_attrs (std::move (inner_attrs)), | |
3152 | extern_items (std::move (extern_items)), locus (locus) | |
3153 | {} | |
3154 | ||
3155 | // Copy constructor with vector clone | |
3156 | ExternBlock (ExternBlock const &other) | |
3157 | : VisItem (other), abi (other.abi), inner_attrs (other.inner_attrs), | |
3158 | locus (other.locus) | |
3159 | { | |
3160 | extern_items.reserve (other.extern_items.size ()); | |
3161 | for (const auto &e : other.extern_items) | |
3162 | extern_items.push_back (e->clone_external_item ()); | |
3163 | } | |
3164 | ||
3165 | // Overloaded assignment operator with vector clone | |
3166 | ExternBlock &operator= (ExternBlock const &other) | |
3167 | { | |
3168 | VisItem::operator= (other); | |
3169 | abi = other.abi; | |
3170 | inner_attrs = other.inner_attrs; | |
3171 | locus = other.locus; | |
3172 | ||
3173 | extern_items.reserve (other.extern_items.size ()); | |
3174 | for (const auto &e : other.extern_items) | |
3175 | extern_items.push_back (e->clone_external_item ()); | |
3176 | ||
3177 | return *this; | |
3178 | } | |
3179 | ||
3180 | // move constructors | |
3181 | ExternBlock (ExternBlock &&other) = default; | |
3182 | ExternBlock &operator= (ExternBlock &&other) = default; | |
3183 | ||
3184 | Location get_locus () const override final { return locus; } | |
3185 | ||
3186 | void accept_vis (HIRFullVisitor &vis) override; | |
3187 | void accept_vis (HIRStmtVisitor &vis) override; | |
3188 | void accept_vis (HIRVisItemVisitor &vis) override; | |
3189 | ||
3190 | std::vector<std::unique_ptr<ExternalItem>> &get_extern_items () | |
3191 | { | |
3192 | return extern_items; | |
3193 | } | |
3194 | ||
3195 | ItemKind get_item_kind () const override { return ItemKind::ExternBlock; } | |
3196 | ||
3197 | protected: | |
3198 | /* Use covariance to implement clone function as returning this object | |
3199 | * rather than base */ | |
3200 | ExternBlock *clone_item_impl () const override | |
3201 | { | |
3202 | return new ExternBlock (*this); | |
3203 | } | |
3204 | ||
3205 | /* Use covariance to implement clone function as returning this object | |
3206 | * rather than base */ | |
3207 | /*virtual ExternBlock* clone_statement_impl() const override { | |
3208 | return new ExternBlock(*this); | |
3209 | }*/ | |
3210 | }; | |
3211 | ||
3212 | } // namespace HIR | |
3213 | } // namespace Rust | |
3214 | ||
3215 | #endif |