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83ffe9cd | 1 | // Copyright (C) 2020-2023 Free Software Foundation, Inc. |
7999cf32 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_AST_LOWER_STMT | |
20 | #define RUST_AST_LOWER_STMT | |
21 | ||
22 | #include "rust-diagnostics.h" | |
23 | ||
24 | #include "rust-ast-lower-base.h" | |
25 | #include "rust-ast-lower-enumitem.h" | |
26 | #include "rust-ast-lower-type.h" | |
27 | #include "rust-ast-lower-block.h" | |
28 | #include "rust-ast-lower-expr.h" | |
29 | #include "rust-ast-lower-pattern.h" | |
30 | ||
31 | namespace Rust { | |
32 | namespace HIR { | |
33 | ||
34 | class ASTLoweringStmt : public ASTLoweringBase | |
35 | { | |
36 | using Rust::HIR::ASTLoweringBase::visit; | |
37 | ||
38 | public: | |
39 | static HIR::Stmt *translate (AST::Stmt *stmt, bool *terminated) | |
40 | { | |
41 | ASTLoweringStmt resolver; | |
42 | stmt->accept_vis (resolver); | |
43 | ||
44 | rust_assert (resolver.translated != nullptr); | |
45 | *terminated = resolver.terminated; | |
46 | resolver.mappings->insert_location ( | |
47 | resolver.translated->get_mappings ().get_hirid (), | |
48 | resolver.translated->get_locus ()); | |
49 | resolver.mappings->insert_hir_stmt (resolver.translated); | |
50 | if (resolver.translated->is_item ()) | |
51 | { | |
52 | HIR::Item *i = static_cast<HIR::Item *> (resolver.translated); | |
53 | ||
54 | auto defid = resolver.translated->get_mappings ().get_defid (); | |
55 | ||
56 | resolver.handle_outer_attributes (*i); | |
57 | resolver.mappings->insert_hir_item (i); | |
58 | resolver.mappings->insert_defid_mapping (defid, i); | |
59 | } | |
60 | ||
61 | return resolver.translated; | |
62 | } | |
63 | ||
64 | void visit (AST::ExprStmtWithBlock &stmt) override | |
65 | { | |
66 | HIR::ExprWithBlock *expr | |
67 | = ASTLoweringExprWithBlock::translate (stmt.get_expr ().get (), | |
68 | &terminated); | |
69 | ||
70 | auto crate_num = mappings->get_current_crate (); | |
71 | Analysis::NodeMapping mapping (crate_num, stmt.get_node_id (), | |
72 | mappings->get_next_hir_id (crate_num), | |
73 | UNKNOWN_LOCAL_DEFID); | |
74 | translated | |
75 | = new HIR::ExprStmtWithBlock (mapping, | |
76 | std::unique_ptr<HIR::ExprWithBlock> (expr), | |
77 | stmt.get_locus (), | |
78 | !stmt.is_semicolon_followed ()); | |
79 | } | |
80 | ||
81 | void visit (AST::ExprStmtWithoutBlock &stmt) override | |
82 | { | |
83 | HIR::Expr *expr | |
84 | = ASTLoweringExpr::translate (stmt.get_expr ().get (), &terminated); | |
85 | ||
86 | auto crate_num = mappings->get_current_crate (); | |
87 | Analysis::NodeMapping mapping (crate_num, stmt.get_node_id (), | |
88 | mappings->get_next_hir_id (crate_num), | |
89 | UNKNOWN_LOCAL_DEFID); | |
90 | translated | |
91 | = new HIR::ExprStmtWithoutBlock (mapping, | |
92 | std::unique_ptr<HIR::Expr> (expr), | |
93 | stmt.get_locus ()); | |
94 | } | |
95 | ||
96 | void visit (AST::ConstantItem &constant) override | |
97 | { | |
98 | HIR::Visibility vis = translate_visibility (constant.get_visibility ()); | |
99 | ||
100 | HIR::Type *type = ASTLoweringType::translate (constant.get_type ().get ()); | |
101 | HIR::Expr *expr = ASTLoweringExpr::translate (constant.get_expr ().get ()); | |
102 | ||
103 | auto crate_num = mappings->get_current_crate (); | |
104 | Analysis::NodeMapping mapping (crate_num, constant.get_node_id (), | |
105 | mappings->get_next_hir_id (crate_num), | |
106 | mappings->get_next_localdef_id (crate_num)); | |
107 | ||
108 | translated = new HIR::ConstantItem (mapping, constant.get_identifier (), | |
109 | vis, std::unique_ptr<HIR::Type> (type), | |
110 | std::unique_ptr<HIR::Expr> (expr), | |
111 | constant.get_outer_attrs (), | |
112 | constant.get_locus ()); | |
113 | } | |
114 | ||
115 | void visit (AST::LetStmt &stmt) override | |
116 | { | |
117 | HIR::Pattern *variables | |
118 | = ASTLoweringPattern::translate (stmt.get_pattern ().get ()); | |
119 | HIR::Type *type = stmt.has_type () | |
120 | ? ASTLoweringType::translate (stmt.get_type ().get ()) | |
121 | : nullptr; | |
122 | HIR::Expr *init_expression | |
123 | = stmt.has_init_expr () | |
124 | ? ASTLoweringExpr::translate (stmt.get_init_expr ().get ()) | |
125 | : nullptr; | |
126 | ||
127 | auto crate_num = mappings->get_current_crate (); | |
128 | Analysis::NodeMapping mapping (crate_num, stmt.get_node_id (), | |
129 | mappings->get_next_hir_id (crate_num), | |
130 | UNKNOWN_LOCAL_DEFID); | |
131 | translated | |
132 | = new HIR::LetStmt (mapping, std::unique_ptr<HIR::Pattern> (variables), | |
133 | std::unique_ptr<HIR::Expr> (init_expression), | |
134 | std::unique_ptr<HIR::Type> (type), | |
135 | stmt.get_outer_attrs (), stmt.get_locus ()); | |
136 | } | |
137 | ||
138 | void visit (AST::TupleStruct &struct_decl) override | |
139 | { | |
140 | std::vector<std::unique_ptr<HIR::GenericParam>> generic_params; | |
141 | if (struct_decl.has_generics ()) | |
142 | { | |
143 | generic_params | |
144 | = lower_generic_params (struct_decl.get_generic_params ()); | |
145 | } | |
146 | ||
147 | std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items; | |
148 | HIR::WhereClause where_clause (std::move (where_clause_items)); | |
149 | HIR::Visibility vis = translate_visibility (struct_decl.get_visibility ()); | |
150 | ||
151 | std::vector<HIR::TupleField> fields; | |
152 | for (AST::TupleField &field : struct_decl.get_fields ()) | |
153 | { | |
154 | HIR::Visibility vis = translate_visibility (field.get_visibility ()); | |
155 | HIR::Type *type | |
156 | = ASTLoweringType::translate (field.get_field_type ().get ()); | |
157 | ||
158 | auto crate_num = mappings->get_current_crate (); | |
159 | Analysis::NodeMapping mapping (crate_num, field.get_node_id (), | |
160 | mappings->get_next_hir_id (crate_num), | |
161 | mappings->get_next_localdef_id ( | |
162 | crate_num)); | |
163 | ||
164 | HIR::TupleField translated_field (mapping, | |
165 | std::unique_ptr<HIR::Type> (type), | |
166 | vis, field.get_locus (), | |
167 | field.get_outer_attrs ()); | |
168 | fields.push_back (std::move (translated_field)); | |
169 | } | |
170 | ||
171 | auto crate_num = mappings->get_current_crate (); | |
172 | Analysis::NodeMapping mapping (crate_num, struct_decl.get_node_id (), | |
173 | mappings->get_next_hir_id (crate_num), | |
174 | mappings->get_next_localdef_id (crate_num)); | |
175 | ||
176 | translated = new HIR::TupleStruct (mapping, std::move (fields), | |
177 | struct_decl.get_identifier (), | |
178 | std::move (generic_params), | |
179 | std::move (where_clause), vis, | |
180 | struct_decl.get_outer_attrs (), | |
181 | struct_decl.get_locus ()); | |
182 | } | |
183 | ||
184 | void visit (AST::StructStruct &struct_decl) override | |
185 | { | |
186 | std::vector<std::unique_ptr<HIR::GenericParam>> generic_params; | |
187 | if (struct_decl.has_generics ()) | |
188 | { | |
189 | generic_params | |
190 | = lower_generic_params (struct_decl.get_generic_params ()); | |
191 | } | |
192 | ||
193 | std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items; | |
194 | HIR::WhereClause where_clause (std::move (where_clause_items)); | |
195 | HIR::Visibility vis = translate_visibility (struct_decl.get_visibility ()); | |
196 | ||
197 | bool is_unit = struct_decl.is_unit_struct (); | |
198 | std::vector<HIR::StructField> fields; | |
199 | for (AST::StructField &field : struct_decl.get_fields ()) | |
200 | { | |
201 | HIR::Visibility vis = translate_visibility (field.get_visibility ()); | |
202 | HIR::Type *type | |
203 | = ASTLoweringType::translate (field.get_field_type ().get ()); | |
204 | ||
205 | auto crate_num = mappings->get_current_crate (); | |
206 | Analysis::NodeMapping mapping (crate_num, field.get_node_id (), | |
207 | mappings->get_next_hir_id (crate_num), | |
208 | mappings->get_next_localdef_id ( | |
209 | crate_num)); | |
210 | ||
211 | HIR::StructField translated_field (mapping, field.get_field_name (), | |
212 | std::unique_ptr<HIR::Type> (type), | |
213 | vis, field.get_locus (), | |
214 | field.get_outer_attrs ()); | |
215 | ||
216 | if (struct_field_name_exists (fields, translated_field)) | |
217 | break; | |
218 | ||
219 | fields.push_back (std::move (translated_field)); | |
220 | } | |
221 | ||
222 | auto crate_num = mappings->get_current_crate (); | |
223 | Analysis::NodeMapping mapping (crate_num, struct_decl.get_node_id (), | |
224 | mappings->get_next_hir_id (crate_num), | |
225 | mappings->get_next_localdef_id (crate_num)); | |
226 | ||
227 | translated = new HIR::StructStruct (mapping, std::move (fields), | |
228 | struct_decl.get_identifier (), | |
229 | std::move (generic_params), | |
230 | std::move (where_clause), is_unit, vis, | |
231 | struct_decl.get_outer_attrs (), | |
232 | struct_decl.get_locus ()); | |
233 | } | |
234 | ||
235 | void visit (AST::Union &union_decl) override | |
236 | { | |
237 | std::vector<std::unique_ptr<HIR::GenericParam>> generic_params; | |
238 | if (union_decl.has_generics ()) | |
239 | { | |
240 | generic_params | |
241 | = lower_generic_params (union_decl.get_generic_params ()); | |
242 | } | |
243 | ||
244 | std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items; | |
245 | HIR::WhereClause where_clause (std::move (where_clause_items)); | |
246 | HIR::Visibility vis = translate_visibility (union_decl.get_visibility ()); | |
247 | ||
248 | std::vector<HIR::StructField> variants; | |
249 | for (AST::StructField &variant : union_decl.get_variants ()) | |
250 | { | |
251 | HIR::Visibility vis = translate_visibility (variant.get_visibility ()); | |
252 | HIR::Type *type | |
253 | = ASTLoweringType::translate (variant.get_field_type ().get ()); | |
254 | ||
255 | auto crate_num = mappings->get_current_crate (); | |
256 | Analysis::NodeMapping mapping (crate_num, variant.get_node_id (), | |
257 | mappings->get_next_hir_id (crate_num), | |
258 | mappings->get_next_localdef_id ( | |
259 | crate_num)); | |
260 | ||
261 | HIR::StructField translated_variant (mapping, variant.get_field_name (), | |
262 | std::unique_ptr<HIR::Type> (type), | |
263 | vis, variant.get_locus (), | |
264 | variant.get_outer_attrs ()); | |
265 | ||
266 | if (struct_field_name_exists (variants, translated_variant)) | |
267 | break; | |
268 | ||
269 | variants.push_back (std::move (translated_variant)); | |
270 | } | |
271 | ||
272 | auto crate_num = mappings->get_current_crate (); | |
273 | Analysis::NodeMapping mapping (crate_num, union_decl.get_node_id (), | |
274 | mappings->get_next_hir_id (crate_num), | |
275 | mappings->get_next_localdef_id (crate_num)); | |
276 | ||
277 | translated | |
278 | = new HIR::Union (mapping, union_decl.get_identifier (), vis, | |
279 | std::move (generic_params), std::move (where_clause), | |
280 | std::move (variants), union_decl.get_outer_attrs (), | |
281 | union_decl.get_locus ()); | |
282 | } | |
283 | ||
284 | void visit (AST::Enum &enum_decl) override | |
285 | { | |
286 | std::vector<std::unique_ptr<HIR::GenericParam>> generic_params; | |
287 | if (enum_decl.has_generics ()) | |
288 | { | |
289 | generic_params = lower_generic_params (enum_decl.get_generic_params ()); | |
290 | } | |
291 | ||
292 | std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items; | |
293 | HIR::WhereClause where_clause (std::move (where_clause_items)); | |
294 | HIR::Visibility vis = translate_visibility (enum_decl.get_visibility ()); | |
295 | ||
296 | // bool is_unit = enum_decl.is_zero_variant (); | |
297 | std::vector<std::unique_ptr<HIR::EnumItem>> items; | |
298 | for (auto &variant : enum_decl.get_variants ()) | |
299 | { | |
300 | HIR::EnumItem *hir_item | |
301 | = ASTLoweringEnumItem::translate (variant.get ()); | |
302 | items.push_back (std::unique_ptr<HIR::EnumItem> (hir_item)); | |
303 | } | |
304 | ||
305 | auto crate_num = mappings->get_current_crate (); | |
306 | Analysis::NodeMapping mapping (crate_num, enum_decl.get_node_id (), | |
307 | mappings->get_next_hir_id (crate_num), | |
308 | mappings->get_next_localdef_id (crate_num)); | |
309 | ||
310 | translated = new HIR::Enum (mapping, enum_decl.get_identifier (), vis, | |
311 | std::move (generic_params), | |
312 | std::move (where_clause), /* is_unit, */ | |
313 | std::move (items), enum_decl.get_outer_attrs (), | |
314 | enum_decl.get_locus ()); | |
315 | } | |
316 | ||
317 | void visit (AST::EmptyStmt &empty) override | |
318 | { | |
319 | auto crate_num = mappings->get_current_crate (); | |
320 | Analysis::NodeMapping mapping (crate_num, empty.get_node_id (), | |
321 | mappings->get_next_hir_id (crate_num), | |
322 | mappings->get_next_localdef_id (crate_num)); | |
323 | ||
324 | translated = new HIR::EmptyStmt (mapping, empty.get_locus ()); | |
325 | } | |
326 | ||
327 | void visit (AST::Function &function) override | |
328 | { | |
329 | // ignore for now and leave empty | |
330 | std::vector<std::unique_ptr<HIR::WhereClauseItem>> where_clause_items; | |
331 | HIR::WhereClause where_clause (std::move (where_clause_items)); | |
332 | HIR::FunctionQualifiers qualifiers | |
333 | = lower_qualifiers (function.get_qualifiers ()); | |
334 | HIR::Visibility vis = translate_visibility (function.get_visibility ()); | |
335 | ||
336 | // need | |
337 | std::vector<std::unique_ptr<HIR::GenericParam>> generic_params; | |
338 | if (function.has_generics ()) | |
339 | { | |
340 | generic_params = lower_generic_params (function.get_generic_params ()); | |
341 | } | |
342 | ||
343 | Identifier function_name = function.get_function_name (); | |
344 | Location locus = function.get_locus (); | |
345 | ||
346 | std::unique_ptr<HIR::Type> return_type | |
347 | = function.has_return_type () ? std::unique_ptr<HIR::Type> ( | |
348 | ASTLoweringType::translate (function.get_return_type ().get ())) | |
349 | : nullptr; | |
350 | ||
351 | std::vector<HIR::FunctionParam> function_params; | |
352 | for (auto ¶m : function.get_function_params ()) | |
353 | { | |
354 | auto translated_pattern = std::unique_ptr<HIR::Pattern> ( | |
355 | ASTLoweringPattern::translate (param.get_pattern ().get ())); | |
356 | auto translated_type = std::unique_ptr<HIR::Type> ( | |
357 | ASTLoweringType::translate (param.get_type ().get ())); | |
358 | ||
359 | auto crate_num = mappings->get_current_crate (); | |
360 | Analysis::NodeMapping mapping (crate_num, param.get_node_id (), | |
361 | mappings->get_next_hir_id (crate_num), | |
362 | UNKNOWN_LOCAL_DEFID); | |
363 | ||
364 | auto hir_param | |
365 | = HIR::FunctionParam (mapping, std::move (translated_pattern), | |
366 | std::move (translated_type), | |
367 | param.get_locus ()); | |
368 | function_params.push_back (hir_param); | |
369 | } | |
370 | ||
371 | bool terminated = false; | |
372 | std::unique_ptr<HIR::BlockExpr> function_body | |
373 | = std::unique_ptr<HIR::BlockExpr> ( | |
374 | ASTLoweringBlock::translate (function.get_definition ().get (), | |
375 | &terminated)); | |
376 | ||
377 | auto crate_num = mappings->get_current_crate (); | |
378 | Analysis::NodeMapping mapping (crate_num, function.get_node_id (), | |
379 | mappings->get_next_hir_id (crate_num), | |
380 | mappings->get_next_localdef_id (crate_num)); | |
381 | ||
382 | mappings->insert_location (function_body->get_mappings ().get_hirid (), | |
383 | function.get_locus ()); | |
384 | ||
385 | auto fn | |
386 | = new HIR::Function (mapping, std::move (function_name), | |
387 | std::move (qualifiers), std::move (generic_params), | |
388 | std::move (function_params), std::move (return_type), | |
389 | std::move (where_clause), std::move (function_body), | |
390 | std::move (vis), function.get_outer_attrs (), | |
391 | HIR::SelfParam::error (), locus); | |
392 | ||
393 | // add the mappings for the function params at the end | |
394 | for (auto ¶m : fn->get_function_params ()) | |
395 | { | |
396 | mappings->insert_hir_param (¶m); | |
397 | mappings->insert_location (mapping.get_hirid (), param.get_locus ()); | |
398 | } | |
399 | ||
400 | translated = fn; | |
401 | } | |
402 | ||
403 | void visit (AST::ExternBlock &extern_block) override | |
404 | { | |
405 | translated = lower_extern_block (extern_block); | |
406 | } | |
407 | ||
408 | private: | |
409 | ASTLoweringStmt () : translated (nullptr), terminated (false) {} | |
410 | ||
411 | HIR::Stmt *translated; | |
412 | bool terminated; | |
413 | }; | |
414 | ||
415 | } // namespace HIR | |
416 | } // namespace Rust | |
417 | ||
418 | #endif // RUST_AST_LOWER_PATTERN |