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74b04a01 XL |
1 | //! Defines language items. |
2 | //! | |
3 | //! Language items are items that represent concepts intrinsic to the language | |
4 | //! itself. Examples are: | |
5 | //! | |
6 | //! * Traits that specify "kinds"; e.g., `Sync`, `Send`. | |
7 | //! * Traits that represent operators; e.g., `Add`, `Sub`, `Index`. | |
8 | //! * Functions called by the compiler itself. | |
9 | ||
74b04a01 | 10 | use crate::def_id::DefId; |
f2b60f7d | 11 | use crate::errors::LangItemError; |
3dfed10e | 12 | use crate::{MethodKind, Target}; |
74b04a01 | 13 | |
3dfed10e | 14 | use rustc_ast as ast; |
74b04a01 XL |
15 | use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; |
16 | use rustc_macros::HashStable_Generic; | |
3dfed10e | 17 | use rustc_span::symbol::{kw, sym, Symbol}; |
74b04a01 XL |
18 | use rustc_span::Span; |
19 | ||
487cf647 FG |
20 | /// All of the language items, defined or not. |
21 | /// Defined lang items can come from the current crate or its dependencies. | |
22 | #[derive(HashStable_Generic, Debug)] | |
23 | pub struct LanguageItems { | |
24 | /// Mappings from lang items to their possibly found [`DefId`]s. | |
25 | /// The index corresponds to the order in [`LangItem`]. | |
26 | items: [Option<DefId>; std::mem::variant_count::<LangItem>()], | |
27 | /// Lang items that were not found during collection. | |
28 | pub missing: Vec<LangItem>, | |
f035d41b XL |
29 | } |
30 | ||
487cf647 FG |
31 | impl LanguageItems { |
32 | /// Construct an empty collection of lang items and no missing ones. | |
33 | pub fn new() -> Self { | |
34 | Self { items: [None; std::mem::variant_count::<LangItem>()], missing: Vec::new() } | |
35 | } | |
36 | ||
37 | pub fn get(&self, item: LangItem) -> Option<DefId> { | |
38 | self.items[item as usize] | |
39 | } | |
40 | ||
41 | pub fn set(&mut self, item: LangItem, def_id: DefId) { | |
42 | self.items[item as usize] = Some(def_id); | |
43 | } | |
44 | ||
45 | /// Requires that a given `LangItem` was bound and returns the corresponding `DefId`. | |
46 | /// If it wasn't bound, e.g. due to a missing `#[lang = "<it.name()>"]`, | |
47 | /// returns an error encapsulating the `LangItem`. | |
48 | pub fn require(&self, it: LangItem) -> Result<DefId, LangItemError> { | |
49 | self.get(it).ok_or_else(|| LangItemError(it)) | |
50 | } | |
f035d41b | 51 | |
487cf647 FG |
52 | pub fn iter<'a>(&'a self) -> impl Iterator<Item = (LangItem, DefId)> + 'a { |
53 | self.items | |
54 | .iter() | |
55 | .enumerate() | |
56 | .filter_map(|(i, id)| id.map(|id| (LangItem::from_u32(i as u32).unwrap(), id))) | |
57 | } | |
f035d41b XL |
58 | } |
59 | ||
74b04a01 XL |
60 | // The actual lang items defined come at the end of this file in one handy table. |
61 | // So you probably just want to nip down to the end. | |
62 | macro_rules! language_item_table { | |
63 | ( | |
487cf647 | 64 | $( $(#[$attr:meta])* $variant:ident, $module:ident :: $name:ident, $method:ident, $target:expr, $generics:expr; )* |
74b04a01 XL |
65 | ) => { |
66 | ||
67 | enum_from_u32! { | |
68 | /// A representation of all the valid language items in Rust. | |
3dfed10e | 69 | #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Encodable, Decodable)] |
74b04a01 | 70 | pub enum LangItem { |
6a06907d XL |
71 | $( |
72 | #[doc = concat!("The `", stringify!($name), "` lang item.")] | |
73 | /// | |
74 | $(#[$attr])* | |
75 | $variant, | |
76 | )* | |
74b04a01 XL |
77 | } |
78 | } | |
79 | ||
80 | impl LangItem { | |
3dfed10e | 81 | /// Returns the `name` symbol in `#[lang = "$name"]`. |
6a06907d XL |
82 | /// For example, [`LangItem::PartialEq`]`.name()` |
83 | /// would result in [`sym::eq`] since it is `#[lang = "eq"]`. | |
3dfed10e | 84 | pub fn name(self) -> Symbol { |
74b04a01 | 85 | match self { |
6a06907d | 86 | $( LangItem::$variant => $module::$name, )* |
74b04a01 XL |
87 | } |
88 | } | |
f035d41b | 89 | |
487cf647 FG |
90 | /// Opposite of [`LangItem::name`] |
91 | pub fn from_name(name: Symbol) -> Option<Self> { | |
92 | match name { | |
93 | $( $module::$name => Some(LangItem::$variant), )* | |
94 | _ => None, | |
f035d41b XL |
95 | } |
96 | } | |
94222f64 | 97 | |
487cf647 FG |
98 | /// Returns the name of the `LangItem` enum variant. |
99 | // This method is used by Clippy for internal lints. | |
100 | pub fn variant_name(self) -> &'static str { | |
94222f64 | 101 | match self { |
487cf647 | 102 | $( LangItem::$variant => stringify!($variant), )* |
94222f64 XL |
103 | } |
104 | } | |
74b04a01 | 105 | |
487cf647 FG |
106 | pub fn target(self) -> Target { |
107 | match self { | |
108 | $( LangItem::$variant => $target, )* | |
74b04a01 XL |
109 | } |
110 | } | |
111 | ||
487cf647 FG |
112 | pub fn required_generics(&self) -> GenericRequirement { |
113 | match self { | |
114 | $( LangItem::$variant => $generics, )* | |
115 | } | |
f035d41b | 116 | } |
487cf647 | 117 | } |
f035d41b | 118 | |
487cf647 | 119 | impl LanguageItems { |
74b04a01 | 120 | $( |
6a06907d | 121 | #[doc = concat!("Returns the [`DefId`] of the `", stringify!($name), "` lang item if it is defined.")] |
74b04a01 | 122 | pub fn $method(&self) -> Option<DefId> { |
3dfed10e | 123 | self.items[LangItem::$variant as usize] |
74b04a01 XL |
124 | } |
125 | )* | |
126 | } | |
74b04a01 XL |
127 | } |
128 | } | |
129 | ||
130 | impl<CTX> HashStable<CTX> for LangItem { | |
131 | fn hash_stable(&self, _: &mut CTX, hasher: &mut StableHasher) { | |
132 | ::std::hash::Hash::hash(self, hasher); | |
133 | } | |
134 | } | |
135 | ||
136 | /// Extracts the first `lang = "$name"` out of a list of attributes. | |
487cf647 | 137 | /// The `#[panic_handler]` attribute is also extracted out when found. |
5099ac24 | 138 | pub fn extract(attrs: &[ast::Attribute]) -> Option<(Symbol, Span)> { |
74b04a01 XL |
139 | attrs.iter().find_map(|attr| { |
140 | Some(match attr { | |
5099ac24 FG |
141 | _ if attr.has_name(sym::lang) => (attr.value_str()?, attr.span), |
142 | _ if attr.has_name(sym::panic_handler) => (sym::panic_impl, attr.span), | |
74b04a01 XL |
143 | _ => return None, |
144 | }) | |
145 | }) | |
146 | } | |
147 | ||
148 | language_item_table! { | |
9c376795 | 149 | // Variant name, Name, Getter method name, Target Generic requirements; |
94222f64 XL |
150 | Sized, sym::sized, sized_trait, Target::Trait, GenericRequirement::Exact(0); |
151 | Unsize, sym::unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1); | |
6a06907d | 152 | /// Trait injected by `#[derive(PartialEq)]`, (i.e. "Partial EQ"). |
94222f64 | 153 | StructuralPeq, sym::structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None; |
6a06907d | 154 | /// Trait injected by `#[derive(Eq)]`, (i.e. "Total EQ"; no, I will not apologize). |
94222f64 XL |
155 | StructuralTeq, sym::structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None; |
156 | Copy, sym::copy, copy_trait, Target::Trait, GenericRequirement::Exact(0); | |
157 | Clone, sym::clone, clone_trait, Target::Trait, GenericRequirement::None; | |
158 | Sync, sym::sync, sync_trait, Target::Trait, GenericRequirement::Exact(0); | |
159 | DiscriminantKind, sym::discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None; | |
6a06907d | 160 | /// The associated item of the [`DiscriminantKind`] trait. |
94222f64 XL |
161 | Discriminant, sym::discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None; |
162 | ||
163 | PointeeTrait, sym::pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None; | |
164 | Metadata, sym::metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None; | |
165 | DynMetadata, sym::dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None; | |
166 | ||
167 | Freeze, sym::freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0); | |
168 | ||
169 | Drop, sym::drop, drop_trait, Target::Trait, GenericRequirement::None; | |
5e7ed085 | 170 | Destruct, sym::destruct, destruct_trait, Target::Trait, GenericRequirement::None; |
94222f64 XL |
171 | |
172 | CoerceUnsized, sym::coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1); | |
173 | DispatchFromDyn, sym::dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1); | |
174 | ||
064997fb | 175 | // language items relating to transmutability |
f2b60f7d FG |
176 | TransmuteOpts, sym::transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0); |
177 | TransmuteTrait, sym::transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3); | |
064997fb | 178 | |
487cf647 FG |
179 | Add, sym::add, add_trait, Target::Trait, GenericRequirement::Exact(1); |
180 | Sub, sym::sub, sub_trait, Target::Trait, GenericRequirement::Exact(1); | |
181 | Mul, sym::mul, mul_trait, Target::Trait, GenericRequirement::Exact(1); | |
182 | Div, sym::div, div_trait, Target::Trait, GenericRequirement::Exact(1); | |
183 | Rem, sym::rem, rem_trait, Target::Trait, GenericRequirement::Exact(1); | |
184 | Neg, sym::neg, neg_trait, Target::Trait, GenericRequirement::Exact(0); | |
185 | Not, sym::not, not_trait, Target::Trait, GenericRequirement::Exact(0); | |
186 | BitXor, sym::bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1); | |
187 | BitAnd, sym::bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1); | |
188 | BitOr, sym::bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1); | |
189 | Shl, sym::shl, shl_trait, Target::Trait, GenericRequirement::Exact(1); | |
190 | Shr, sym::shr, shr_trait, Target::Trait, GenericRequirement::Exact(1); | |
191 | AddAssign, sym::add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
192 | SubAssign, sym::sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
193 | MulAssign, sym::mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
194 | DivAssign, sym::div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
195 | RemAssign, sym::rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
196 | BitXorAssign, sym::bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
197 | BitAndAssign, sym::bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
198 | BitOrAssign, sym::bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
199 | ShlAssign, sym::shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
200 | ShrAssign, sym::shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
201 | Index, sym::index, index_trait, Target::Trait, GenericRequirement::Exact(1); | |
202 | IndexMut, sym::index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1); | |
94222f64 XL |
203 | |
204 | UnsafeCell, sym::unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None; | |
205 | VaList, sym::va_list, va_list, Target::Struct, GenericRequirement::None; | |
206 | ||
207 | Deref, sym::deref, deref_trait, Target::Trait, GenericRequirement::Exact(0); | |
208 | DerefMut, sym::deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0); | |
209 | DerefTarget, sym::deref_target, deref_target, Target::AssocTy, GenericRequirement::None; | |
210 | Receiver, sym::receiver, receiver_trait, Target::Trait, GenericRequirement::None; | |
211 | ||
487cf647 FG |
212 | Fn, kw::Fn, fn_trait, Target::Trait, GenericRequirement::Exact(1); |
213 | FnMut, sym::fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1); | |
214 | FnOnce, sym::fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1); | |
94222f64 XL |
215 | |
216 | FnOnceOutput, sym::fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None; | |
217 | ||
218 | Future, sym::future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0); | |
219 | GeneratorState, sym::generator_state, gen_state, Target::Enum, GenericRequirement::None; | |
220 | Generator, sym::generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1); | |
221 | Unpin, sym::unpin, unpin_trait, Target::Trait, GenericRequirement::None; | |
222 | Pin, sym::pin, pin_type, Target::Struct, GenericRequirement::None; | |
223 | ||
487cf647 FG |
224 | PartialEq, sym::eq, eq_trait, Target::Trait, GenericRequirement::Exact(1); |
225 | PartialOrd, sym::partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1); | |
3dfed10e XL |
226 | |
227 | // A number of panic-related lang items. The `panic` item corresponds to divide-by-zero and | |
228 | // various panic cases with `match`. The `panic_bounds_check` item is for indexing arrays. | |
74b04a01 | 229 | // |
3dfed10e XL |
230 | // The `begin_unwind` lang item has a predefined symbol name and is sort of a "weak lang item" |
231 | // in the sense that a crate is not required to have it defined to use it, but a final product | |
232 | // is required to define it somewhere. Additionally, there are restrictions on crates that use | |
233 | // a weak lang item, but do not have it defined. | |
3c0e092e | 234 | Panic, sym::panic, panic_fn, Target::Fn, GenericRequirement::Exact(0); |
9c376795 | 235 | PanicNounwind, sym::panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0); |
94222f64 | 236 | PanicFmt, sym::panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None; |
c295e0f8 | 237 | PanicDisplay, sym::panic_display, panic_display, Target::Fn, GenericRequirement::None; |
94222f64 | 238 | ConstPanicFmt, sym::const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None; |
3c0e092e | 239 | PanicBoundsCheck, sym::panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0); |
94222f64 XL |
240 | PanicInfo, sym::panic_info, panic_info, Target::Struct, GenericRequirement::None; |
241 | PanicLocation, sym::panic_location, panic_location, Target::Struct, GenericRequirement::None; | |
242 | PanicImpl, sym::panic_impl, panic_impl, Target::Fn, GenericRequirement::None; | |
9c376795 | 243 | PanicCannotUnwind, sym::panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0); |
6a06907d | 244 | /// libstd panic entry point. Necessary for const eval to be able to catch it |
94222f64 | 245 | BeginPanic, sym::begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None; |
74b04a01 | 246 | |
94222f64 XL |
247 | ExchangeMalloc, sym::exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None; |
248 | BoxFree, sym::box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1); | |
249 | DropInPlace, sym::drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1); | |
94222f64 | 250 | AllocLayout, sym::alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None; |
74b04a01 | 251 | |
c295e0f8 | 252 | Start, sym::start, start_fn, Target::Fn, GenericRequirement::Exact(1); |
f035d41b | 253 | |
94222f64 XL |
254 | EhPersonality, sym::eh_personality, eh_personality, Target::Fn, GenericRequirement::None; |
255 | EhCatchTypeinfo, sym::eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None; | |
74b04a01 | 256 | |
94222f64 | 257 | OwnedBox, sym::owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1); |
74b04a01 | 258 | |
94222f64 | 259 | PhantomData, sym::phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1); |
74b04a01 | 260 | |
94222f64 | 261 | ManuallyDrop, sym::manually_drop, manually_drop, Target::Struct, GenericRequirement::None; |
74b04a01 | 262 | |
94222f64 | 263 | MaybeUninit, sym::maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None; |
74b04a01 | 264 | |
6a06907d | 265 | /// Align offset for stride != 1; must not panic. |
94222f64 | 266 | AlignOffset, sym::align_offset, align_offset_fn, Target::Fn, GenericRequirement::None; |
3dfed10e | 267 | |
94222f64 | 268 | Termination, sym::termination, termination, Target::Trait, GenericRequirement::None; |
3dfed10e | 269 | |
94222f64 | 270 | Try, sym::Try, try_trait, Target::Trait, GenericRequirement::None; |
3dfed10e | 271 | |
f2b60f7d FG |
272 | Tuple, sym::tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0); |
273 | ||
94222f64 | 274 | SliceLen, sym::slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; |
136023e0 | 275 | |
3dfed10e | 276 | // Language items from AST lowering |
94222f64 XL |
277 | TryTraitFromResidual, sym::from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
278 | TryTraitFromOutput, sym::from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; | |
279 | TryTraitBranch, sym::branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; | |
04454e1e | 280 | TryTraitFromYeet, sym::from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None; |
94222f64 | 281 | |
487cf647 FG |
282 | PointerSized, sym::pointer_sized, pointer_sized, Target::Trait, GenericRequirement::Exact(0); |
283 | ||
284 | Poll, sym::Poll, poll, Target::Enum, GenericRequirement::None; | |
94222f64 XL |
285 | PollReady, sym::Ready, poll_ready_variant, Target::Variant, GenericRequirement::None; |
286 | PollPending, sym::Pending, poll_pending_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 287 | |
487cf647 FG |
288 | // FIXME(swatinem): the following lang items are used for async lowering and |
289 | // should become obsolete eventually. | |
290 | ResumeTy, sym::ResumeTy, resume_ty, Target::Struct, GenericRequirement::None; | |
291 | IdentityFuture, sym::identity_future, identity_future_fn, Target::Fn, GenericRequirement::None; | |
94222f64 | 292 | GetContext, sym::get_context, get_context_fn, Target::Fn, GenericRequirement::None; |
3dfed10e | 293 | |
9c376795 | 294 | Context, sym::Context, context, Target::Struct, GenericRequirement::None; |
94222f64 | 295 | FuturePoll, sym::poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
3dfed10e | 296 | |
94222f64 | 297 | FromFrom, sym::from, from_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
3dfed10e | 298 | |
94222f64 XL |
299 | OptionSome, sym::Some, option_some_variant, Target::Variant, GenericRequirement::None; |
300 | OptionNone, sym::None, option_none_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 301 | |
94222f64 XL |
302 | ResultOk, sym::Ok, result_ok_variant, Target::Variant, GenericRequirement::None; |
303 | ResultErr, sym::Err, result_err_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 304 | |
94222f64 XL |
305 | ControlFlowContinue, sym::Continue, cf_continue_variant, Target::Variant, GenericRequirement::None; |
306 | ControlFlowBreak, sym::Break, cf_break_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 307 | |
a2a8927a | 308 | IntoFutureIntoFuture, sym::into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
94222f64 XL |
309 | IntoIterIntoIter, sym::into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
310 | IteratorNext, sym::next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None; | |
17df50a5 | 311 | |
94222f64 | 312 | PinNewUnchecked, sym::new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; |
74b04a01 | 313 | |
94222f64 XL |
314 | RangeFrom, sym::RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None; |
315 | RangeFull, sym::RangeFull, range_full_struct, Target::Struct, GenericRequirement::None; | |
316 | RangeInclusiveStruct, sym::RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None; | |
317 | RangeInclusiveNew, sym::range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None; | |
318 | Range, sym::Range, range_struct, Target::Struct, GenericRequirement::None; | |
319 | RangeToInclusive, sym::RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None; | |
320 | RangeTo, sym::RangeTo, range_to_struct, Target::Struct, GenericRequirement::None; | |
487cf647 FG |
321 | |
322 | String, sym::String, string, Target::Struct, GenericRequirement::None; | |
94222f64 | 323 | } |
f9f354fc | 324 | |
94222f64 XL |
325 | pub enum GenericRequirement { |
326 | None, | |
327 | Minimum(usize), | |
328 | Exact(usize), | |
74b04a01 | 329 | } |
487cf647 FG |
330 | |
331 | pub static FN_TRAITS: &'static [LangItem] = &[LangItem::Fn, LangItem::FnMut, LangItem::FnOnce]; | |
332 | ||
333 | pub static OPERATORS: &'static [LangItem] = &[ | |
334 | LangItem::Add, | |
335 | LangItem::Sub, | |
336 | LangItem::Mul, | |
337 | LangItem::Div, | |
338 | LangItem::Rem, | |
339 | LangItem::Neg, | |
340 | LangItem::Not, | |
341 | LangItem::BitXor, | |
342 | LangItem::BitAnd, | |
343 | LangItem::BitOr, | |
344 | LangItem::Shl, | |
345 | LangItem::Shr, | |
346 | LangItem::AddAssign, | |
347 | LangItem::SubAssign, | |
348 | LangItem::MulAssign, | |
349 | LangItem::DivAssign, | |
350 | LangItem::RemAssign, | |
351 | LangItem::BitXorAssign, | |
352 | LangItem::BitAndAssign, | |
353 | LangItem::BitOrAssign, | |
354 | LangItem::ShlAssign, | |
355 | LangItem::ShrAssign, | |
356 | LangItem::Index, | |
357 | LangItem::IndexMut, | |
358 | LangItem::PartialEq, | |
359 | LangItem::PartialOrd, | |
360 | ]; |