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1 : // Copyright (C) 2020-2026 Free Software Foundation, Inc.
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 : #include "rust-ast-lower-item.h"
20 : #include "rust-diagnostics.h"
21 : #include "rust-ast-lower.h"
22 : #include "rust-ast-lower-base.h"
23 : #include "rust-ast-lower-enumitem.h"
24 : #include "rust-ast-lower-type.h"
25 : #include "rust-ast-lower-implitem.h"
26 : #include "rust-ast-lower-expr.h"
27 : #include "rust-ast-lower-pattern.h"
28 : #include "rust-ast-lower-block.h"
29 : #include "rust-item.h"
30 :
31 : namespace Rust {
32 : namespace HIR {
33 :
34 : HIR::Item *
35 23523 : ASTLoweringItem::translate (AST::Item &item)
36 : {
37 23523 : ASTLoweringItem resolver;
38 23523 : item.accept_vis (resolver);
39 :
40 23523 : if (resolver.translated != nullptr)
41 : {
42 21953 : auto id = resolver.translated->get_mappings ().get_hirid ();
43 21953 : auto defid = resolver.translated->get_mappings ().get_defid ();
44 21953 : auto locus = resolver.translated->get_locus ();
45 :
46 21953 : resolver.handle_outer_attributes (*resolver.translated);
47 21953 : resolver.mappings.insert_ast_item (&item);
48 21953 : resolver.mappings.insert_hir_item (resolver.translated);
49 21953 : resolver.mappings.insert_location (id, locus);
50 21953 : resolver.mappings.insert_defid_mapping (defid, resolver.translated);
51 : }
52 :
53 23523 : return resolver.translated;
54 23523 : }
55 :
56 : void
57 1202 : ASTLoweringItem::visit (AST::Module &module)
58 : {
59 1202 : auto crate_num = mappings.get_current_crate ();
60 2404 : Analysis::NodeMapping mapping (crate_num, module.get_node_id (),
61 1202 : mappings.get_next_hir_id (crate_num),
62 1202 : mappings.get_next_localdef_id (crate_num));
63 :
64 : // should be lowered from module.get_vis()
65 1202 : HIR::Visibility vis = translate_visibility (module.get_visibility ());
66 :
67 1202 : auto items = std::vector<std::unique_ptr<Item>> ();
68 :
69 5583 : for (auto &item : module.get_items ())
70 : {
71 4381 : auto transitem = translate (*item);
72 : // The item may be null if it doesn't need to live in the HIR - for
73 : // example, macro rules definitions
74 4381 : if (transitem)
75 3923 : items.emplace_back (transitem);
76 : }
77 :
78 : // should be lowered/copied from module.get_in/outer_attrs()
79 1202 : AST::AttrVec inner_attrs = module.get_inner_attrs ();
80 1202 : AST::AttrVec outer_attrs = module.get_outer_attrs ();
81 :
82 1202 : translated
83 1202 : = new HIR::Module (mapping, module.get_name (), module.get_locus (),
84 : std::move (items), std::move (vis),
85 2404 : std::move (inner_attrs), std::move (outer_attrs));
86 1202 : mappings.insert_module (static_cast<Module *> (translated));
87 1202 : }
88 :
89 : void
90 52 : ASTLoweringItem::visit (AST::TypeAlias &alias)
91 : {
92 52 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
93 52 : where_clause_items.reserve (alias.get_where_clause ().get_items ().size ());
94 :
95 52 : for (auto &item : alias.get_where_clause ().get_items ())
96 0 : where_clause_items.emplace_back (
97 0 : ASTLowerWhereClauseItem::translate (*item.get ()));
98 :
99 52 : HIR::WhereClause where_clause (std::move (where_clause_items));
100 52 : HIR::Visibility vis = translate_visibility (alias.get_visibility ());
101 :
102 52 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
103 52 : if (alias.has_generics ())
104 8 : generic_params = lower_generic_params (alias.get_generic_params ());
105 :
106 52 : HIR::Type *existing_type
107 52 : = ASTLoweringType::translate (alias.get_type_aliased ());
108 :
109 52 : auto crate_num = mappings.get_current_crate ();
110 52 : Analysis::NodeMapping mapping (crate_num, alias.get_node_id (),
111 52 : mappings.get_next_hir_id (crate_num),
112 52 : mappings.get_next_localdef_id (crate_num));
113 :
114 52 : translated
115 52 : = new HIR::TypeAlias (mapping, alias.get_new_type_name (),
116 : std::move (generic_params), std::move (where_clause),
117 104 : std::unique_ptr<HIR::Type> (existing_type),
118 52 : std::move (vis), alias.get_outer_attrs (),
119 156 : alias.get_locus ());
120 52 : }
121 :
122 : void
123 957 : ASTLoweringItem::visit (AST::TupleStruct &struct_decl)
124 : {
125 957 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
126 957 : if (struct_decl.has_generics ())
127 : {
128 296 : generic_params = lower_generic_params (struct_decl.get_generic_params ());
129 : }
130 :
131 957 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
132 957 : where_clause_items.reserve (
133 957 : struct_decl.get_where_clause ().get_items ().size ());
134 :
135 957 : for (auto &item : struct_decl.get_where_clause ().get_items ())
136 0 : where_clause_items.emplace_back (
137 0 : ASTLowerWhereClauseItem::translate (*item.get ()));
138 :
139 957 : HIR::WhereClause where_clause (std::move (where_clause_items));
140 957 : HIR::Visibility vis = translate_visibility (struct_decl.get_visibility ());
141 :
142 957 : std::vector<HIR::TupleField> fields;
143 957 : fields.reserve (struct_decl.get_fields ().size ());
144 :
145 2576 : for (AST::TupleField &field : struct_decl.get_fields ())
146 : {
147 1619 : if (field.get_field_type ().is_marked_for_strip ())
148 0 : continue;
149 :
150 : // FIXME: How do we get the visibility from here?
151 1619 : HIR::Visibility vis = translate_visibility (field.get_visibility ());
152 1619 : HIR::Type *type = ASTLoweringType::translate (field.get_field_type ());
153 :
154 1619 : auto crate_num = mappings.get_current_crate ();
155 1619 : Analysis::NodeMapping mapping (crate_num, field.get_node_id (),
156 1619 : mappings.get_next_hir_id (crate_num),
157 1619 : mappings.get_next_localdef_id (crate_num));
158 :
159 1619 : fields.emplace_back (mapping, std::unique_ptr<HIR::Type> (type), vis,
160 3238 : field.get_locus (), field.get_outer_attrs ());
161 1619 : }
162 :
163 957 : auto crate_num = mappings.get_current_crate ();
164 1914 : Analysis::NodeMapping mapping (crate_num, struct_decl.get_node_id (),
165 957 : mappings.get_next_hir_id (crate_num),
166 957 : mappings.get_next_localdef_id (crate_num));
167 :
168 1914 : translated = new HIR::TupleStruct (mapping, std::move (fields),
169 957 : struct_decl.get_identifier (),
170 : std::move (generic_params),
171 : std::move (where_clause), vis,
172 957 : struct_decl.get_outer_attrs (),
173 957 : struct_decl.get_locus ());
174 957 : }
175 :
176 : void
177 1508 : ASTLoweringItem::visit (AST::StructStruct &struct_decl)
178 : {
179 1508 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
180 1508 : if (struct_decl.has_generics ())
181 : {
182 481 : generic_params = lower_generic_params (struct_decl.get_generic_params ());
183 : }
184 :
185 1508 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
186 1508 : where_clause_items.reserve (
187 1508 : struct_decl.get_where_clause ().get_items ().size ());
188 :
189 1512 : for (auto &item : struct_decl.get_where_clause ().get_items ())
190 4 : where_clause_items.emplace_back (
191 4 : ASTLowerWhereClauseItem::translate (*item.get ()));
192 :
193 1508 : HIR::WhereClause where_clause (std::move (where_clause_items));
194 :
195 1508 : HIR::Visibility vis = translate_visibility (struct_decl.get_visibility ());
196 :
197 1508 : bool is_unit = struct_decl.is_unit_struct ();
198 1508 : std::vector<HIR::StructField> fields;
199 3332 : for (AST::StructField &field : struct_decl.get_fields ())
200 : {
201 1824 : if (field.get_field_type ().is_marked_for_strip ())
202 4 : continue;
203 :
204 1824 : HIR::Visibility vis = translate_visibility (field.get_visibility ());
205 1824 : HIR::Type *type = ASTLoweringType::translate (field.get_field_type ());
206 :
207 1824 : auto crate_num = mappings.get_current_crate ();
208 1824 : Analysis::NodeMapping mapping (crate_num, field.get_node_id (),
209 1824 : mappings.get_next_hir_id (crate_num),
210 1824 : mappings.get_next_localdef_id (crate_num));
211 :
212 1824 : HIR::StructField translated_field (mapping, field.get_field_name (),
213 3648 : std::unique_ptr<HIR::Type> (type), vis,
214 : field.get_locus (),
215 3648 : field.get_outer_attrs ());
216 :
217 1824 : if (struct_field_name_exists (fields, translated_field))
218 4 : continue;
219 :
220 1820 : fields.push_back (std::move (translated_field));
221 1824 : }
222 :
223 1508 : auto crate_num = mappings.get_current_crate ();
224 3016 : Analysis::NodeMapping mapping (crate_num, struct_decl.get_node_id (),
225 1508 : mappings.get_next_hir_id (crate_num),
226 1508 : mappings.get_next_localdef_id (crate_num));
227 :
228 3016 : translated = new HIR::StructStruct (mapping, std::move (fields),
229 1508 : struct_decl.get_identifier (),
230 : std::move (generic_params),
231 : std::move (where_clause), is_unit, vis,
232 1508 : struct_decl.get_outer_attrs (),
233 1508 : struct_decl.get_locus ());
234 1508 : }
235 :
236 : void
237 521 : ASTLoweringItem::visit (AST::Enum &enum_decl)
238 : {
239 521 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
240 521 : if (enum_decl.has_generics ())
241 : {
242 226 : generic_params = lower_generic_params (enum_decl.get_generic_params ());
243 : }
244 :
245 521 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
246 521 : where_clause_items.reserve (
247 521 : enum_decl.get_where_clause ().get_items ().size ());
248 :
249 521 : for (auto &item : enum_decl.get_where_clause ().get_items ())
250 0 : where_clause_items.emplace_back (
251 0 : ASTLowerWhereClauseItem::translate (*item.get ()));
252 :
253 521 : HIR::WhereClause where_clause (std::move (where_clause_items));
254 521 : HIR::Visibility vis = translate_visibility (enum_decl.get_visibility ());
255 :
256 : // bool is_unit = enum_decl.is_zero_variant ();
257 521 : std::vector<std::unique_ptr<HIR::EnumItem>> items;
258 521 : items.reserve (enum_decl.get_variants ().size ());
259 :
260 1746 : for (auto &variant : enum_decl.get_variants ())
261 : {
262 1225 : if (variant->is_marked_for_strip ())
263 0 : continue;
264 :
265 1225 : items.emplace_back (ASTLoweringEnumItem::translate (variant.get ()));
266 : }
267 :
268 521 : auto crate_num = mappings.get_current_crate ();
269 1042 : Analysis::NodeMapping mapping (crate_num, enum_decl.get_node_id (),
270 521 : mappings.get_next_hir_id (crate_num),
271 521 : mappings.get_next_localdef_id (crate_num));
272 :
273 521 : HIR::Enum *hir_enum
274 521 : = new HIR::Enum (mapping, enum_decl.get_identifier (), vis,
275 : std::move (generic_params), std::move (where_clause),
276 521 : std::move (items), enum_decl.get_outer_attrs (),
277 1042 : enum_decl.get_locus ());
278 521 : translated = hir_enum;
279 1746 : for (auto &variant : hir_enum->get_variants ())
280 : {
281 1225 : mappings.insert_hir_enumitem (hir_enum, variant.get ());
282 : }
283 521 : }
284 :
285 : void
286 102 : ASTLoweringItem::visit (AST::Union &union_decl)
287 : {
288 102 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
289 102 : if (union_decl.has_generics ())
290 74 : generic_params = lower_generic_params (union_decl.get_generic_params ());
291 :
292 102 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
293 102 : where_clause_items.reserve (
294 102 : union_decl.get_where_clause ().get_items ().size ());
295 :
296 102 : for (auto &item : union_decl.get_where_clause ().get_items ())
297 0 : where_clause_items.emplace_back (
298 0 : ASTLowerWhereClauseItem::translate (*item.get ()));
299 :
300 102 : HIR::WhereClause where_clause (std::move (where_clause_items));
301 102 : HIR::Visibility vis = translate_visibility (union_decl.get_visibility ());
302 :
303 102 : std::vector<HIR::StructField> variants;
304 402 : for (AST::StructField &variant : union_decl.get_variants ())
305 : {
306 302 : if (variant.get_field_type ().is_marked_for_strip ())
307 0 : continue;
308 :
309 : // FIXME: Does visibility apply here?
310 302 : HIR::Visibility vis = translate_visibility (variant.get_visibility ());
311 302 : HIR::Type *type = ASTLoweringType::translate (variant.get_field_type ());
312 :
313 302 : auto crate_num = mappings.get_current_crate ();
314 302 : Analysis::NodeMapping mapping (crate_num, variant.get_node_id (),
315 302 : mappings.get_next_hir_id (crate_num),
316 302 : mappings.get_next_localdef_id (crate_num));
317 :
318 302 : HIR::StructField translated_variant (mapping, variant.get_field_name (),
319 604 : std::unique_ptr<HIR::Type> (type),
320 : vis, variant.get_locus (),
321 604 : variant.get_outer_attrs ());
322 :
323 302 : if (struct_field_name_exists (variants, translated_variant))
324 : break;
325 :
326 300 : variants.push_back (std::move (translated_variant));
327 302 : }
328 :
329 102 : auto crate_num = mappings.get_current_crate ();
330 204 : Analysis::NodeMapping mapping (crate_num, union_decl.get_node_id (),
331 102 : mappings.get_next_hir_id (crate_num),
332 102 : mappings.get_next_localdef_id (crate_num));
333 :
334 102 : translated
335 102 : = new HIR::Union (mapping, union_decl.get_identifier (), vis,
336 : std::move (generic_params), std::move (where_clause),
337 102 : std::move (variants), union_decl.get_outer_attrs (),
338 204 : union_decl.get_locus ());
339 102 : }
340 :
341 : void
342 54 : ASTLoweringItem::visit (AST::StaticItem &var)
343 : {
344 54 : HIR::Visibility vis = translate_visibility (var.get_visibility ());
345 :
346 54 : HIR::Type *type = ASTLoweringType::translate (var.get_type (), true);
347 54 : HIR::Expr *expr = ASTLoweringExpr::translate (var.get_expr ());
348 :
349 54 : auto crate_num = mappings.get_current_crate ();
350 108 : Analysis::NodeMapping mapping (crate_num, var.get_node_id (),
351 54 : mappings.get_next_hir_id (crate_num),
352 54 : mappings.get_next_localdef_id (crate_num));
353 :
354 54 : translated = new HIR::StaticItem (mapping, var.get_identifier (),
355 54 : var.is_mutable () ? Mutability::Mut
356 : : Mutability::Imm,
357 54 : std::unique_ptr<HIR::Type> (type),
358 108 : std::unique_ptr<HIR::Expr> (expr), vis,
359 162 : var.get_outer_attrs (), var.get_locus ());
360 54 : }
361 :
362 : void
363 457 : ASTLoweringItem::visit (AST::ConstantItem &constant)
364 : {
365 457 : HIR::Visibility vis = translate_visibility (constant.get_visibility ());
366 :
367 457 : HIR::Type *type = ASTLoweringType::translate (constant.get_type (), true);
368 457 : HIR::Expr *expr = nullptr;
369 457 : if (constant.has_expr ())
370 456 : expr = ASTLoweringExpr::translate (constant.get_expr ());
371 :
372 457 : auto crate_num = mappings.get_current_crate ();
373 457 : Analysis::NodeMapping mapping (crate_num, constant.get_node_id (),
374 457 : mappings.get_next_hir_id (crate_num),
375 457 : mappings.get_next_localdef_id (crate_num));
376 :
377 457 : translated = new HIR::ConstantItem (mapping, constant.get_identifier (), vis,
378 1371 : std::unique_ptr<HIR::Type> (type),
379 914 : std::unique_ptr<HIR::Expr> (expr),
380 457 : constant.get_outer_attrs (),
381 1371 : constant.get_locus ());
382 457 : }
383 :
384 : void
385 6349 : ASTLoweringItem::visit (AST::Function &function)
386 : {
387 6349 : if (function.is_marked_for_strip ())
388 0 : return;
389 :
390 6349 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
391 6349 : where_clause_items.reserve (
392 6349 : function.get_where_clause ().get_items ().size ());
393 :
394 6397 : for (auto &item : function.get_where_clause ().get_items ())
395 48 : where_clause_items.emplace_back (
396 48 : ASTLowerWhereClauseItem::translate (*item.get ()));
397 :
398 6349 : HIR::WhereClause where_clause (std::move (where_clause_items));
399 6349 : HIR::FunctionQualifiers qualifiers
400 6349 : = lower_qualifiers (function.get_qualifiers ());
401 6349 : HIR::Visibility vis = translate_visibility (function.get_visibility ());
402 :
403 : // need
404 6349 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
405 6349 : if (function.has_generics ())
406 : {
407 603 : generic_params = lower_generic_params (function.get_generic_params ());
408 : }
409 6349 : Identifier function_name = function.get_function_name ();
410 6349 : location_t locus = function.get_locus ();
411 :
412 6349 : std::unique_ptr<HIR::Type> return_type
413 6349 : = function.has_return_type () ? std::unique_ptr<HIR::Type> (
414 : ASTLoweringType::translate (function.get_return_type (), false,
415 : true /* impl trait is allowed here*/))
416 6349 : : nullptr;
417 :
418 6349 : std::vector<HIR::FunctionParam> function_params;
419 6349 : function_params.reserve (function.get_function_params ().size ());
420 :
421 6349 : auto crate_num = mappings.get_current_crate ();
422 8264 : for (auto &p : function.get_function_params ())
423 : {
424 1915 : if (p->is_variadic ())
425 1 : continue;
426 1915 : if (p->is_self ())
427 : {
428 1 : rich_location r (line_table, p->get_locus ());
429 1 : r.add_range (function.get_locus ());
430 1 : rust_error_at (
431 : r, "%<self%> parameter is only allowed in associated functions");
432 :
433 : // rustc creates a synthetic regular fn-param here pointing to a
434 : // generic Self as far as i can see but that seems over the top for
435 : // now.
436 : //
437 : // see this example (invalid code):
438 : //
439 : // pub trait X {
440 : // fn x() {
441 : // fn f(&mut self) {}
442 : // f();
443 : // }
444 : // }
445 : //
446 : // without a synthetic param we wont get the number of args error as
447 : // well but i think this is fine for now.
448 : //
449 : // problem is what we make the param type to become...
450 :
451 1 : continue;
452 1 : }
453 :
454 1914 : auto ¶m = static_cast<AST::FunctionParam &> (*p);
455 :
456 : auto translated_pattern = std::unique_ptr<HIR::Pattern> (
457 1914 : ASTLoweringPattern::translate (param.get_pattern ()));
458 1914 : auto translated_type = std::unique_ptr<HIR::Type> (
459 1914 : ASTLoweringType::translate (param.get_type ()));
460 :
461 1914 : auto crate_num = mappings.get_current_crate ();
462 1914 : Analysis::NodeMapping mapping (crate_num, param.get_node_id (),
463 1914 : mappings.get_next_hir_id (crate_num),
464 1914 : UNKNOWN_LOCAL_DEFID);
465 :
466 1914 : function_params.emplace_back (mapping, std::move (translated_pattern),
467 : std::move (translated_type),
468 1914 : param.get_locus ());
469 1914 : }
470 :
471 6349 : bool terminated = false;
472 6349 : std::unique_ptr<HIR::BlockExpr> function_body
473 : = std::unique_ptr<HIR::BlockExpr> (
474 6349 : ASTLoweringBlock::translate (*function.get_definition ().value (),
475 6349 : &terminated));
476 :
477 12698 : Analysis::NodeMapping mapping (crate_num, function.get_node_id (),
478 6349 : mappings.get_next_hir_id (crate_num),
479 6349 : mappings.get_next_localdef_id (crate_num));
480 :
481 6349 : mappings.insert_location (function_body->get_mappings ().get_hirid (),
482 : function.get_locus ());
483 :
484 6349 : Defaultness defaultness
485 6349 : = function.is_default () ? Defaultness::Default : Defaultness::Final;
486 :
487 6349 : auto fn
488 : = new HIR::Function (mapping, std::move (function_name),
489 : std::move (qualifiers), std::move (generic_params),
490 : std::move (function_params), std::move (return_type),
491 : std::move (where_clause), std::move (function_body),
492 6349 : std::move (vis), function.get_outer_attrs (),
493 6349 : tl::nullopt, defaultness, locus);
494 :
495 : // add the mappings for the function params at the end
496 8263 : for (auto ¶m : fn->get_function_params ())
497 : {
498 1914 : mappings.insert_hir_param (¶m);
499 1914 : mappings.insert_location (mapping.get_hirid (), param.get_locus ());
500 : }
501 :
502 6349 : translated = fn;
503 6349 : }
504 :
505 : void
506 942 : ASTLoweringItem::visit (AST::InherentImpl &impl_block)
507 : {
508 942 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
509 942 : where_clause_items.reserve (
510 942 : impl_block.get_where_clause ().get_items ().size ());
511 :
512 942 : for (auto &item : impl_block.get_where_clause ().get_items ())
513 0 : where_clause_items.emplace_back (
514 0 : ASTLowerWhereClauseItem::translate (*item));
515 :
516 942 : HIR::WhereClause where_clause (std::move (where_clause_items));
517 942 : HIR::Visibility vis = translate_visibility (impl_block.get_visibility ());
518 :
519 942 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
520 942 : if (impl_block.has_generics ())
521 : {
522 319 : generic_params = lower_generic_params (impl_block.get_generic_params ());
523 :
524 639 : for (auto &generic_param : generic_params)
525 : {
526 320 : switch (generic_param->get_kind ())
527 : {
528 294 : case HIR::GenericParam::GenericKind::TYPE:
529 294 : {
530 294 : const HIR::TypeParam &t
531 294 : = static_cast<const HIR::TypeParam &> (*generic_param);
532 :
533 294 : if (t.has_type ())
534 : {
535 1 : rich_location rich_locus (line_table, t.get_locus ());
536 1 : rich_locus.add_fixit_replace (
537 : t.get_locus (),
538 : "for more information, see issue #36887 "
539 : "<https://github.com/rust-lang/rust/issues/36887>");
540 1 : rust_error_at (rich_locus,
541 : "defaults for type parameters are only "
542 : "allowed in %<struct%>, %<enum%>, %<type%>, "
543 : "or %<trait%> definitions");
544 1 : }
545 : }
546 : break;
547 :
548 : default:
549 : break;
550 : }
551 : }
552 : }
553 :
554 942 : HIR::Type *impl_type = ASTLoweringType::translate (impl_block.get_type ());
555 :
556 942 : auto crate_num = mappings.get_current_crate ();
557 1884 : Analysis::NodeMapping mapping (crate_num, impl_block.get_node_id (),
558 942 : mappings.get_next_hir_id (crate_num),
559 942 : mappings.get_next_localdef_id (crate_num));
560 :
561 942 : std::vector<std::unique_ptr<HIR::ImplItem>> impl_items;
562 942 : std::vector<HirId> impl_item_ids;
563 3672 : for (auto &impl_item : impl_block.get_impl_items ())
564 : {
565 2730 : if (impl_item->is_marked_for_strip ())
566 0 : continue;
567 :
568 2730 : HIR::ImplItem *lowered
569 2730 : = ASTLowerImplItem::translate (*impl_item, mapping.get_hirid ());
570 2730 : rust_assert (lowered != nullptr);
571 2730 : impl_items.emplace_back (lowered);
572 2730 : impl_item_ids.push_back (lowered->get_impl_mappings ().get_hirid ());
573 : }
574 :
575 942 : BoundPolarity polarity = BoundPolarity::RegularBound;
576 942 : HIR::ImplBlock *hir_impl_block = new HIR::ImplBlock (
577 : mapping, std::move (impl_items), std::move (generic_params),
578 942 : std::unique_ptr<HIR::Type> (impl_type), nullptr, where_clause, polarity,
579 1884 : vis, impl_block.get_inner_attrs (), impl_block.get_outer_attrs (),
580 942 : impl_block.get_locus (), false);
581 942 : translated = hir_impl_block;
582 :
583 942 : mappings.insert_hir_impl_block (hir_impl_block);
584 3672 : for (auto &impl_item_id : impl_item_ids)
585 : {
586 2730 : mappings.insert_impl_item_mapping (impl_item_id, hir_impl_block);
587 : }
588 942 : }
589 :
590 : void
591 3699 : ASTLoweringItem::visit (AST::Trait &trait)
592 : {
593 3699 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
594 3699 : where_clause_items.reserve (trait.get_where_clause ().get_items ().size ());
595 :
596 3706 : for (auto &item : trait.get_where_clause ().get_items ())
597 7 : where_clause_items.emplace_back (
598 7 : ASTLowerWhereClauseItem::translate (*item.get ()));
599 :
600 3699 : HIR::WhereClause where_clause (std::move (where_clause_items));
601 :
602 3699 : HIR::Visibility vis = translate_visibility (trait.get_visibility ());
603 :
604 3699 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
605 3699 : if (trait.has_generics ())
606 : {
607 634 : generic_params = lower_generic_params (trait.get_generic_params ());
608 : }
609 :
610 : // TODO: separate "Self" from normal generic parameters
611 : // in HIR as well as in AST?
612 3699 : HIR::GenericParam *self_param
613 3699 : = ASTLowerGenericParam::translate (trait.get_implicit_self ());
614 3699 : generic_params.emplace (generic_params.begin (), self_param);
615 :
616 3699 : std::vector<std::unique_ptr<HIR::TypeParamBound>> type_param_bounds;
617 3699 : if (trait.has_type_param_bounds ())
618 : {
619 1134 : for (auto &bound : trait.get_type_param_bounds ())
620 603 : type_param_bounds.emplace_back (lower_bound (*bound));
621 : }
622 :
623 3699 : auto trait_item_size = trait.get_trait_items ().size ();
624 :
625 3699 : std::vector<std::unique_ptr<HIR::TraitItem>> trait_items;
626 3699 : trait_items.reserve (trait_item_size);
627 3699 : std::vector<HirId> trait_item_ids;
628 3699 : trait_item_ids.reserve (trait_item_size);
629 :
630 7020 : for (auto &item : trait.get_trait_items ())
631 : {
632 3321 : if (item->is_marked_for_strip ())
633 0 : continue;
634 :
635 3321 : HIR::TraitItem *lowered = ASTLowerTraitItem::translate (*item);
636 3321 : trait_item_ids.push_back (lowered->get_mappings ().get_hirid ());
637 3321 : trait_items.emplace_back (lowered);
638 : }
639 :
640 3699 : auto crate_num = mappings.get_current_crate ();
641 7398 : Analysis::NodeMapping mapping (crate_num, trait.get_node_id (),
642 3699 : mappings.get_next_hir_id (crate_num),
643 3699 : mappings.get_next_localdef_id (crate_num));
644 :
645 3699 : auto trait_unsafety
646 3699 : = trait.is_unsafe () ? Unsafety::Unsafe : Unsafety::Normal;
647 :
648 3699 : HIR::Trait *hir_trait
649 7398 : = new HIR::Trait (mapping, trait.get_identifier (), trait_unsafety,
650 : std::move (generic_params), std::move (type_param_bounds),
651 : where_clause, std::move (trait_items), vis,
652 3699 : trait.get_outer_attrs (), trait.get_locus ());
653 :
654 3699 : if (trait.is_auto ())
655 12 : mappings.insert_auto_trait (hir_trait);
656 :
657 3699 : translated = hir_trait;
658 :
659 7020 : for (auto trait_item_id : trait_item_ids)
660 : {
661 3321 : mappings.insert_trait_item_mapping (trait_item_id, hir_trait);
662 : }
663 3699 : }
664 :
665 : void
666 4657 : ASTLoweringItem::visit (AST::TraitImpl &impl_block)
667 : {
668 4657 : bool unsafe = impl_block.is_unsafe ();
669 :
670 4657 : std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items;
671 4657 : where_clause_items.reserve (
672 4657 : impl_block.get_where_clause ().get_items ().size ());
673 :
674 4740 : for (auto &item : impl_block.get_where_clause ().get_items ())
675 83 : where_clause_items.emplace_back (
676 83 : ASTLowerWhereClauseItem::translate (*item));
677 :
678 4657 : HIR::WhereClause where_clause (std::move (where_clause_items));
679 4657 : HIR::Visibility vis = translate_visibility (impl_block.get_visibility ());
680 :
681 4657 : std::vector<std::unique_ptr<HIR::GenericParam>> generic_params;
682 4657 : if (impl_block.has_generics ())
683 : {
684 645 : generic_params = lower_generic_params (impl_block.get_generic_params ());
685 :
686 1401 : for (auto &generic_param : generic_params)
687 : {
688 756 : switch (generic_param->get_kind ())
689 : {
690 680 : case HIR::GenericParam::GenericKind::TYPE:
691 680 : {
692 680 : const HIR::TypeParam &t
693 680 : = static_cast<const HIR::TypeParam &> (*generic_param);
694 :
695 680 : if (t.has_type ())
696 : {
697 0 : rich_location rich_locus (line_table, t.get_locus ());
698 0 : rich_locus.add_fixit_replace (
699 : t.get_locus (), "for more information, see issue #36887 "
700 : "<https://github.com/rust-lang/rust/"
701 : "issues/36887>");
702 0 : rust_error_at (rich_locus,
703 : "defaults for type parameters are only "
704 : "allowed in %<struct%>, %<enum%>, %<type%>, "
705 : "or %<trait%> definitions");
706 0 : }
707 : }
708 : break;
709 :
710 : default:
711 : break;
712 : }
713 : }
714 : }
715 :
716 4657 : HIR::Type *impl_type = ASTLoweringType::translate (impl_block.get_type ());
717 4657 : HIR::TypePath *trait_ref
718 4657 : = ASTLowerTypePath::translate (impl_block.get_trait_path ());
719 :
720 4657 : auto crate_num = mappings.get_current_crate ();
721 9314 : Analysis::NodeMapping mapping (crate_num, impl_block.get_node_id (),
722 4657 : mappings.get_next_hir_id (crate_num),
723 4657 : mappings.get_next_localdef_id (crate_num));
724 :
725 4657 : auto impl_items_size = impl_block.get_impl_items ().size ();
726 :
727 4657 : std::vector<std::unique_ptr<HIR::ImplItem>> impl_items;
728 4657 : impl_items.reserve (impl_items_size);
729 9314 : std::vector<HirId> impl_item_ids;
730 4657 : impl_item_ids.reserve (impl_items_size);
731 :
732 10013 : for (auto &impl_item : impl_block.get_impl_items ())
733 : {
734 5356 : if (impl_item->is_marked_for_strip ())
735 0 : continue;
736 :
737 5356 : HIR::ImplItem *lowered
738 5356 : = ASTLowerImplItem::translate (*impl_item, mapping.get_hirid ());
739 5356 : rust_assert (lowered != nullptr);
740 5356 : impl_item_ids.push_back (lowered->get_impl_mappings ().get_hirid ());
741 5356 : impl_items.emplace_back (lowered);
742 : }
743 :
744 4657 : BoundPolarity polarity = impl_block.is_exclam ()
745 4657 : ? BoundPolarity::NegativeBound
746 4652 : : BoundPolarity::RegularBound;
747 4657 : HIR::ImplBlock *hir_impl_block = new HIR::ImplBlock (
748 : mapping, std::move (impl_items), std::move (generic_params),
749 13971 : std::unique_ptr<HIR::Type> (impl_type),
750 9314 : std::unique_ptr<HIR::TypePath> (trait_ref), where_clause, polarity, vis,
751 9314 : impl_block.get_inner_attrs (), impl_block.get_outer_attrs (),
752 9314 : impl_block.get_locus (), unsafe);
753 4657 : translated = hir_impl_block;
754 :
755 4657 : mappings.insert_hir_impl_block (hir_impl_block);
756 10013 : for (auto &impl_item_id : impl_item_ids)
757 : {
758 5356 : mappings.insert_impl_item_mapping (impl_item_id, hir_impl_block);
759 : }
760 4657 : }
761 :
762 : void
763 1453 : ASTLoweringItem::visit (AST::ExternBlock &extern_block)
764 : {
765 1453 : translated = lower_extern_block (extern_block);
766 1453 : }
767 :
768 : void
769 898 : ASTLoweringItem::visit (AST::MacroRulesDefinition &def)
770 : {
771 898 : lower_macro_definition (def);
772 898 : }
773 :
774 : void
775 24 : ASTLoweringItem::visit (AST::ExternCrate &extern_crate)
776 : {
777 24 : if (extern_crate.references_self ())
778 0 : return;
779 :
780 24 : auto &mappings = Analysis::Mappings::get ();
781 24 : CrateNum num
782 24 : = mappings.lookup_crate_name (extern_crate.get_referenced_crate ())
783 24 : .value ();
784 24 : AST::Crate &crate = mappings.get_ast_crate (num);
785 :
786 24 : auto saved_crate_num = mappings.get_current_crate ();
787 24 : mappings.set_current_crate (num);
788 24 : auto lowered = ASTLowering::Resolve (crate);
789 24 : mappings.insert_hir_crate (std::move (lowered));
790 24 : mappings.set_current_crate (saved_crate_num);
791 24 : }
792 :
793 : HIR::SimplePath
794 61 : ASTLoweringSimplePath::translate (const AST::SimplePath &path)
795 : {
796 61 : ASTLoweringSimplePath resolver;
797 :
798 61 : return resolver.lower (path);
799 61 : }
800 :
801 : HIR::SimplePathSegment
802 70 : ASTLoweringSimplePath::lower (const AST::SimplePathSegment &segment)
803 : {
804 70 : auto crate_num = mappings.get_current_crate ();
805 70 : auto node_id = segment.get_node_id ();
806 :
807 70 : auto mapping = Analysis::NodeMapping (crate_num, node_id,
808 70 : mappings.get_next_hir_id (crate_num),
809 70 : UNKNOWN_LOCAL_DEFID);
810 :
811 70 : auto hir_seg = HIR::SimplePathSegment (mapping);
812 :
813 70 : mappings.insert_node_to_hir (node_id, mapping.get_hirid ());
814 : // mappings.insert_simple_path_segment (crate_num, node_id, &segment);
815 :
816 70 : return hir_seg;
817 : }
818 :
819 : HIR::SimplePath
820 61 : ASTLoweringSimplePath::lower (const AST::SimplePath &path)
821 : {
822 61 : auto segments = std::vector<HIR::SimplePathSegment> ();
823 131 : for (auto &segment : path.get_segments ())
824 70 : segments.emplace_back (lower (segment));
825 :
826 61 : auto crate_num = mappings.get_current_crate ();
827 61 : auto node_id = path.get_node_id ();
828 :
829 61 : auto mapping = Analysis::NodeMapping (crate_num, node_id,
830 61 : mappings.get_next_hir_id (crate_num),
831 61 : UNKNOWN_LOCAL_DEFID);
832 :
833 61 : auto lowered
834 61 : = HIR::SimplePath (std::move (segments), mapping, path.get_locus ());
835 :
836 61 : mappings.insert_node_to_hir (node_id, mapping.get_hirid ());
837 : // mappings.insert_simple_path (crate_num, node_id, &path);
838 :
839 61 : return lowered;
840 61 : }
841 :
842 : } // namespace HIR
843 : } // namespace Rust
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