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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-lang-item.h"
20 : #include "rust-system.h"
21 :
22 : namespace Rust {
23 :
24 : const BiMap<std::string, LangItem::Kind> Rust::LangItem::lang_items = {{
25 : {"add", Kind::ADD},
26 : {"sub", Kind::SUBTRACT},
27 : {"mul", Kind::MULTIPLY},
28 : {"div", Kind::DIVIDE},
29 : {"rem", Kind::REMAINDER},
30 : {"bitand", Kind::BITAND},
31 : {"bitor", Kind::BITOR},
32 : {"bitxor", Kind::BITXOR},
33 : {"shl", Kind::SHL},
34 : {"shr", Kind::SHR},
35 : {"neg", Kind::NEGATION},
36 : {"not", Kind::NOT},
37 : {"add_assign", Kind::ADD_ASSIGN},
38 : {"sub_assign", Kind::SUB_ASSIGN},
39 : {"mul_assign", Kind::MUL_ASSIGN},
40 : {"div_assign", Kind::DIV_ASSIGN},
41 : {"rem_assign", Kind::REM_ASSIGN},
42 : {"bitand_assign", Kind::BITAND_ASSIGN},
43 : {"bitor_assign", Kind::BITOR_ASSIGN},
44 : {"bitxor_assign", Kind::BITXOR_ASSIGN},
45 : {"shl_assign", Kind::SHL_ASSIGN},
46 : {"shr_assign", Kind::SHR_ASSIGN},
47 : {"deref", Kind::DEREF},
48 : {"deref_mut", Kind::DEREF_MUT},
49 : {"receiver", Kind::RECEIVER},
50 : {"index", Kind::INDEX},
51 : {"index_mut", Kind::INDEX_MUT},
52 : {"RangeFull", Kind::RANGE_FULL},
53 : {"Range", Kind::RANGE},
54 : {"RangeFrom", Kind::RANGE_FROM},
55 : {"RangeTo", Kind::RANGE_TO},
56 : {"RangeInclusive", Kind::RANGE_INCLUSIVE},
57 : {"RangeToInclusive", Kind::RANGE_TO_INCLUSIVE},
58 : {"range_inclusive_new", Kind::RANGE_INCLUSIVE_NEW},
59 : {"phantom_data", Kind::PHANTOM_DATA},
60 : {"fn", Kind::FN},
61 : {"fn_mut", Kind::FN_MUT},
62 : {"fn_once", Kind::FN_ONCE},
63 : {"fn_once_output", Kind::FN_ONCE_OUTPUT},
64 : {"copy", Kind::COPY},
65 : {"clone", Kind::CLONE},
66 : {"drop", Kind::DROP},
67 : {"sized", Kind::SIZED},
68 : {"sync", Kind::SYNC},
69 : {"slice_alloc", Kind::SLICE_ALLOC},
70 : {"slice_u8_alloc", Kind::SLICE_U8_ALLOC},
71 : {"str_alloc", Kind::STR_ALLOC},
72 : {"array", Kind::ARRAY},
73 : {"bool", Kind::BOOL},
74 : {"char", Kind::CHAR},
75 : {"f32", Kind::F32},
76 : {"f64", Kind::F64},
77 : {"i8", Kind::I8},
78 : {"i16", Kind::I16},
79 : {"i32", Kind::I32},
80 : {"i64", Kind::I64},
81 : {"i128", Kind::I128},
82 : {"isize", Kind::ISIZE},
83 : {"u8", Kind::U8},
84 : {"u16", Kind::U16},
85 : {"u32", Kind::U32},
86 : {"u64", Kind::U64},
87 : {"u128", Kind::U128},
88 : {"usize", Kind::USIZE},
89 : {"const_ptr", Kind::CONST_PTR},
90 : {"const_slice_ptr", Kind::CONST_SLICE_PTR},
91 : {"mut_ptr", Kind::MUT_PTR},
92 : {"mut_slice_ptr", Kind::MUT_SLICE_PTR},
93 : {"slice_u8", Kind::SLICE_U8},
94 : {"slice", Kind::SLICE},
95 : {"str", Kind::STR},
96 : // NOTE: CStr is not present in Rust 1.49, and is only backported for
97 : // compilation of Rust for Linux with a patched core lib.
98 : {"CStr", Kind::CSTR},
99 : {"f32_runtime", Kind::F32_RUNTIME},
100 : {"f64_runtime", Kind::F64_RUNTIME},
101 :
102 : {"Some", Kind::OPTION_SOME},
103 : {"None", Kind::OPTION_NONE},
104 :
105 : {"Ok", Kind::RESULT_OK},
106 : {"Err", Kind::RESULT_ERR},
107 :
108 : {"into_iter", Kind::INTOITER_INTOITER},
109 : {"next", Kind::ITERATOR_NEXT},
110 :
111 : {"eq", Kind::EQ},
112 : {"partial_ord", Kind::PARTIAL_ORD},
113 :
114 : {"try", Kind::TRY},
115 : {"into_result", Kind::TRY_INTO_RESULT},
116 : {"from_error", Kind::TRY_FROM_ERROR},
117 : {"from_ok", Kind::TRY_FROM_OK},
118 :
119 : {"from", Kind::FROM_FROM},
120 :
121 : {"structural_peq", Kind::STRUCTURAL_PEQ},
122 : {"structural_teq", Kind::STRUCTURAL_TEQ},
123 :
124 : {"discriminant_kind", Kind::DISCRIMINANT_KIND},
125 : {"discriminant_type", Kind::DISCRIMINANT_TYPE},
126 : {"manually_drop", Kind::MANUALLY_DROP},
127 : {"drop_in_place", Kind::DROP_IN_PLACE},
128 :
129 : {"exchange_malloc", Kind::EXCHANGE_MALLOC},
130 : {"owned_box", Kind::OWNED_BOX},
131 : {"oom", Kind::OOM},
132 : {"alloc_layout", Kind::ALLOC_LAYOUT},
133 : {"box_free", Kind::BOX_FREE},
134 : {"maybe_uninit", Kind::MAYBE_UNINIT},
135 :
136 : {"unsafe_cell", Kind::UNSAFE_CELL},
137 :
138 : {"future_trait", Kind::FUTURE_TRAIT},
139 : {"poll", Kind::POLL},
140 : {"Ready", Kind::READY},
141 : {"Pending", Kind::PENDING},
142 : {"generator", Kind::GENERATOR},
143 : {"generator_state", Kind::GENERATOR_STATE},
144 : }};
145 :
146 : tl::optional<LangItem::Kind>
147 7074 : LangItem::Parse (const std::string &item)
148 : {
149 7074 : auto lang_item = LangItem::lang_items.lookup (item);
150 :
151 7074 : return lang_item;
152 : }
153 :
154 : std::string
155 95224 : LangItem::ToString (LangItem::Kind type)
156 : {
157 95224 : auto str = LangItem::lang_items.lookup (type);
158 95224 : return str.value ();
159 : }
160 :
161 : std::string
162 383 : LangItem::PrettyString (LangItem::Kind type)
163 : {
164 766 : return "#[lang = \"" + LangItem::ToString (type) + "\"]";
165 : }
166 :
167 : LangItem::Kind
168 3581 : LangItem::OperatorToLangItem (ArithmeticOrLogicalOperator op)
169 : {
170 3581 : switch (op)
171 : {
172 : case ArithmeticOrLogicalOperator::ADD:
173 : return LangItem::Kind::ADD;
174 : case ArithmeticOrLogicalOperator::SUBTRACT:
175 : return LangItem::Kind::SUBTRACT;
176 : case ArithmeticOrLogicalOperator::MULTIPLY:
177 : return LangItem::Kind::MULTIPLY;
178 : case ArithmeticOrLogicalOperator::DIVIDE:
179 : return LangItem::Kind::DIVIDE;
180 : case ArithmeticOrLogicalOperator::MODULUS:
181 : return LangItem::Kind::REMAINDER;
182 : case ArithmeticOrLogicalOperator::BITWISE_AND:
183 : return LangItem::Kind::BITAND;
184 : case ArithmeticOrLogicalOperator::BITWISE_OR:
185 : return LangItem::Kind::BITOR;
186 : case ArithmeticOrLogicalOperator::BITWISE_XOR:
187 : return LangItem::Kind::BITXOR;
188 : case ArithmeticOrLogicalOperator::LEFT_SHIFT:
189 : return LangItem::Kind::SHL;
190 : case ArithmeticOrLogicalOperator::RIGHT_SHIFT:
191 : return LangItem::Kind::SHR;
192 : }
193 :
194 0 : rust_unreachable ();
195 : }
196 :
197 : LangItem::Kind
198 4406 : LangItem::ComparisonToLangItem (ComparisonOperator op)
199 : {
200 4406 : switch (op)
201 : {
202 : case ComparisonOperator::NOT_EQUAL:
203 : case ComparisonOperator::EQUAL:
204 : return LangItem::Kind::EQ;
205 :
206 2186 : case ComparisonOperator::GREATER_THAN:
207 2186 : case ComparisonOperator::LESS_THAN:
208 2186 : case ComparisonOperator::GREATER_OR_EQUAL:
209 2186 : case ComparisonOperator::LESS_OR_EQUAL:
210 2186 : return LangItem::Kind::PARTIAL_ORD;
211 : }
212 :
213 0 : rust_unreachable ();
214 : }
215 :
216 : std::string
217 4406 : LangItem::ComparisonToSegment (ComparisonOperator op)
218 : {
219 4406 : switch (op)
220 : {
221 1033 : case ComparisonOperator::NOT_EQUAL:
222 1033 : return "ne";
223 1187 : case ComparisonOperator::EQUAL:
224 1187 : return "eq";
225 872 : case ComparisonOperator::GREATER_THAN:
226 872 : return "gt";
227 862 : case ComparisonOperator::LESS_THAN:
228 862 : return "lt";
229 206 : case ComparisonOperator::GREATER_OR_EQUAL:
230 206 : return "ge";
231 246 : case ComparisonOperator::LESS_OR_EQUAL:
232 246 : return "le";
233 : }
234 :
235 0 : rust_unreachable ();
236 : }
237 :
238 : LangItem::Kind
239 711 : LangItem::CompoundAssignmentOperatorToLangItem (ArithmeticOrLogicalOperator op)
240 : {
241 711 : switch (op)
242 : {
243 : case ArithmeticOrLogicalOperator::ADD:
244 : return LangItem::Kind::ADD_ASSIGN;
245 : case ArithmeticOrLogicalOperator::SUBTRACT:
246 : return LangItem::Kind::SUB_ASSIGN;
247 : case ArithmeticOrLogicalOperator::MULTIPLY:
248 : return LangItem::Kind::MUL_ASSIGN;
249 : case ArithmeticOrLogicalOperator::DIVIDE:
250 : return LangItem::Kind::DIV_ASSIGN;
251 : case ArithmeticOrLogicalOperator::MODULUS:
252 : return LangItem::Kind::REM_ASSIGN;
253 : case ArithmeticOrLogicalOperator::BITWISE_AND:
254 : return LangItem::Kind::BITAND_ASSIGN;
255 : case ArithmeticOrLogicalOperator::BITWISE_OR:
256 : return LangItem::Kind::BITOR_ASSIGN;
257 : case ArithmeticOrLogicalOperator::BITWISE_XOR:
258 : return LangItem::Kind::BITXOR_ASSIGN;
259 : case ArithmeticOrLogicalOperator::LEFT_SHIFT:
260 : return LangItem::Kind::SHL_ASSIGN;
261 : case ArithmeticOrLogicalOperator::RIGHT_SHIFT:
262 : return LangItem::Kind::SHR_ASSIGN;
263 : }
264 :
265 0 : rust_unreachable ();
266 : }
267 :
268 : LangItem::Kind
269 701 : LangItem::NegationOperatorToLangItem (NegationOperator op)
270 : {
271 701 : switch (op)
272 : {
273 : case NegationOperator::NEGATE:
274 : return LangItem::Kind::NEGATION;
275 279 : case NegationOperator::NOT:
276 279 : return LangItem::Kind::NOT;
277 : }
278 :
279 0 : rust_unreachable ();
280 : }
281 :
282 : bool
283 146 : LangItem::IsEnumVariant (LangItem::Kind type)
284 : {
285 146 : const static std::set<LangItem::Kind> enum_variants
286 146 : = {Kind::OPTION_NONE, Kind::OPTION_SOME, Kind::RESULT_OK, Kind::RESULT_ERR};
287 :
288 146 : return enum_variants.find (type) != enum_variants.end ();
289 : }
290 :
291 : } // namespace Rust
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