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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 : {"phantom_data", Kind::PHANTOM_DATA},
59 : {"fn", Kind::FN},
60 : {"fn_mut", Kind::FN_MUT},
61 : {"fn_once", Kind::FN_ONCE},
62 : {"fn_once_output", Kind::FN_ONCE_OUTPUT},
63 : {"copy", Kind::COPY},
64 : {"clone", Kind::CLONE},
65 : {"drop", Kind::DROP},
66 : {"sized", Kind::SIZED},
67 : {"sync", Kind::SYNC},
68 : {"slice_alloc", Kind::SLICE_ALLOC},
69 : {"slice_u8_alloc", Kind::SLICE_U8_ALLOC},
70 : {"str_alloc", Kind::STR_ALLOC},
71 : {"array", Kind::ARRAY},
72 : {"bool", Kind::BOOL},
73 : {"char", Kind::CHAR},
74 : {"f32", Kind::F32},
75 : {"f64", Kind::F64},
76 : {"i8", Kind::I8},
77 : {"i16", Kind::I16},
78 : {"i32", Kind::I32},
79 : {"i64", Kind::I64},
80 : {"i128", Kind::I128},
81 : {"isize", Kind::ISIZE},
82 : {"u8", Kind::U8},
83 : {"u16", Kind::U16},
84 : {"u32", Kind::U32},
85 : {"u64", Kind::U64},
86 : {"u128", Kind::U128},
87 : {"usize", Kind::USIZE},
88 : {"const_ptr", Kind::CONST_PTR},
89 : {"const_slice_ptr", Kind::CONST_SLICE_PTR},
90 : {"mut_ptr", Kind::MUT_PTR},
91 : {"mut_slice_ptr", Kind::MUT_SLICE_PTR},
92 : {"slice_u8", Kind::SLICE_U8},
93 : {"slice", Kind::SLICE},
94 : {"str", Kind::STR},
95 : // NOTE: CStr is not present in Rust 1.49, and is only backported for
96 : // compilation of Rust for Linux with a patched core lib.
97 : {"CStr", Kind::CSTR},
98 : {"f32_runtime", Kind::F32_RUNTIME},
99 : {"f64_runtime", Kind::F64_RUNTIME},
100 :
101 : {"Some", Kind::OPTION_SOME},
102 : {"None", Kind::OPTION_NONE},
103 :
104 : {"Ok", Kind::RESULT_OK},
105 : {"Err", Kind::RESULT_ERR},
106 :
107 : {"into_iter", Kind::INTOITER_INTOITER},
108 : {"next", Kind::ITERATOR_NEXT},
109 :
110 : {"eq", Kind::EQ},
111 : {"partial_ord", Kind::PARTIAL_ORD},
112 :
113 : {"try", Kind::TRY},
114 : {"into_result", Kind::TRY_INTO_RESULT},
115 : {"from_error", Kind::TRY_FROM_ERROR},
116 : {"from_ok", Kind::TRY_FROM_OK},
117 :
118 : {"from", Kind::FROM_FROM},
119 :
120 : {"structural_peq", Kind::STRUCTURAL_PEQ},
121 : {"structural_teq", Kind::STRUCTURAL_TEQ},
122 :
123 : {"discriminant_kind", Kind::DISCRIMINANT_KIND},
124 : {"discriminant_type", Kind::DISCRIMINANT_TYPE},
125 : {"manually_drop", Kind::MANUALLY_DROP},
126 :
127 : {"exchange_malloc", Kind::EXCHANGE_MALLOC},
128 : {"owned_box", Kind::OWNED_BOX},
129 : }};
130 :
131 : tl::optional<LangItem::Kind>
132 6878 : LangItem::Parse (const std::string &item)
133 : {
134 6878 : auto lang_item = LangItem::lang_items.lookup (item);
135 :
136 6878 : return lang_item;
137 : }
138 :
139 : std::string
140 94615 : LangItem::ToString (LangItem::Kind type)
141 : {
142 94615 : auto str = LangItem::lang_items.lookup (type);
143 94615 : return str.value ();
144 : }
145 :
146 : std::string
147 1 : LangItem::PrettyString (LangItem::Kind type)
148 : {
149 2 : return "#[lang = \"" + LangItem::ToString (type) + "\"]";
150 : }
151 :
152 : LangItem::Kind
153 3552 : LangItem::OperatorToLangItem (ArithmeticOrLogicalOperator op)
154 : {
155 3552 : switch (op)
156 : {
157 : case ArithmeticOrLogicalOperator::ADD:
158 : return LangItem::Kind::ADD;
159 : case ArithmeticOrLogicalOperator::SUBTRACT:
160 : return LangItem::Kind::SUBTRACT;
161 : case ArithmeticOrLogicalOperator::MULTIPLY:
162 : return LangItem::Kind::MULTIPLY;
163 : case ArithmeticOrLogicalOperator::DIVIDE:
164 : return LangItem::Kind::DIVIDE;
165 : case ArithmeticOrLogicalOperator::MODULUS:
166 : return LangItem::Kind::REMAINDER;
167 : case ArithmeticOrLogicalOperator::BITWISE_AND:
168 : return LangItem::Kind::BITAND;
169 : case ArithmeticOrLogicalOperator::BITWISE_OR:
170 : return LangItem::Kind::BITOR;
171 : case ArithmeticOrLogicalOperator::BITWISE_XOR:
172 : return LangItem::Kind::BITXOR;
173 : case ArithmeticOrLogicalOperator::LEFT_SHIFT:
174 : return LangItem::Kind::SHL;
175 : case ArithmeticOrLogicalOperator::RIGHT_SHIFT:
176 : return LangItem::Kind::SHR;
177 : }
178 :
179 0 : rust_unreachable ();
180 : }
181 :
182 : LangItem::Kind
183 4376 : LangItem::ComparisonToLangItem (ComparisonOperator op)
184 : {
185 4376 : switch (op)
186 : {
187 : case ComparisonOperator::NOT_EQUAL:
188 : case ComparisonOperator::EQUAL:
189 : return LangItem::Kind::EQ;
190 :
191 2170 : case ComparisonOperator::GREATER_THAN:
192 2170 : case ComparisonOperator::LESS_THAN:
193 2170 : case ComparisonOperator::GREATER_OR_EQUAL:
194 2170 : case ComparisonOperator::LESS_OR_EQUAL:
195 2170 : return LangItem::Kind::PARTIAL_ORD;
196 : }
197 :
198 0 : rust_unreachable ();
199 : }
200 :
201 : std::string
202 4376 : LangItem::ComparisonToSegment (ComparisonOperator op)
203 : {
204 4376 : switch (op)
205 : {
206 1031 : case ComparisonOperator::NOT_EQUAL:
207 1031 : return "ne";
208 1175 : case ComparisonOperator::EQUAL:
209 1175 : return "eq";
210 870 : case ComparisonOperator::GREATER_THAN:
211 870 : return "gt";
212 855 : case ComparisonOperator::LESS_THAN:
213 855 : return "lt";
214 200 : case ComparisonOperator::GREATER_OR_EQUAL:
215 200 : return "ge";
216 245 : case ComparisonOperator::LESS_OR_EQUAL:
217 245 : return "le";
218 : }
219 :
220 0 : rust_unreachable ();
221 : }
222 :
223 : LangItem::Kind
224 691 : LangItem::CompoundAssignmentOperatorToLangItem (ArithmeticOrLogicalOperator op)
225 : {
226 691 : switch (op)
227 : {
228 : case ArithmeticOrLogicalOperator::ADD:
229 : return LangItem::Kind::ADD_ASSIGN;
230 : case ArithmeticOrLogicalOperator::SUBTRACT:
231 : return LangItem::Kind::SUB_ASSIGN;
232 : case ArithmeticOrLogicalOperator::MULTIPLY:
233 : return LangItem::Kind::MUL_ASSIGN;
234 : case ArithmeticOrLogicalOperator::DIVIDE:
235 : return LangItem::Kind::DIV_ASSIGN;
236 : case ArithmeticOrLogicalOperator::MODULUS:
237 : return LangItem::Kind::REM_ASSIGN;
238 : case ArithmeticOrLogicalOperator::BITWISE_AND:
239 : return LangItem::Kind::BITAND_ASSIGN;
240 : case ArithmeticOrLogicalOperator::BITWISE_OR:
241 : return LangItem::Kind::BITOR_ASSIGN;
242 : case ArithmeticOrLogicalOperator::BITWISE_XOR:
243 : return LangItem::Kind::BITXOR_ASSIGN;
244 : case ArithmeticOrLogicalOperator::LEFT_SHIFT:
245 : return LangItem::Kind::SHL_ASSIGN;
246 : case ArithmeticOrLogicalOperator::RIGHT_SHIFT:
247 : return LangItem::Kind::SHR_ASSIGN;
248 : }
249 :
250 0 : rust_unreachable ();
251 : }
252 :
253 : LangItem::Kind
254 701 : LangItem::NegationOperatorToLangItem (NegationOperator op)
255 : {
256 701 : switch (op)
257 : {
258 : case NegationOperator::NEGATE:
259 : return LangItem::Kind::NEGATION;
260 279 : case NegationOperator::NOT:
261 279 : return LangItem::Kind::NOT;
262 : }
263 :
264 0 : rust_unreachable ();
265 : }
266 :
267 : bool
268 139 : LangItem::IsEnumVariant (LangItem::Kind type)
269 : {
270 139 : const static std::set<LangItem::Kind> enum_variants
271 139 : = {Kind::OPTION_NONE, Kind::OPTION_SOME, Kind::RESULT_OK, Kind::RESULT_ERR};
272 :
273 139 : return enum_variants.find (type) != enum_variants.end ();
274 : }
275 :
276 : } // namespace Rust
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