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Commit | Line | Data |
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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; |
3dfed10e | 11 | use crate::{MethodKind, Target}; |
74b04a01 | 12 | |
3dfed10e | 13 | use rustc_ast as ast; |
74b04a01 XL |
14 | use rustc_data_structures::stable_hasher::{HashStable, StableHasher}; |
15 | use rustc_macros::HashStable_Generic; | |
3dfed10e | 16 | use rustc_span::symbol::{kw, sym, Symbol}; |
74b04a01 XL |
17 | use rustc_span::Span; |
18 | ||
487cf647 FG |
19 | /// All of the language items, defined or not. |
20 | /// Defined lang items can come from the current crate or its dependencies. | |
21 | #[derive(HashStable_Generic, Debug)] | |
22 | pub struct LanguageItems { | |
23 | /// Mappings from lang items to their possibly found [`DefId`]s. | |
24 | /// The index corresponds to the order in [`LangItem`]. | |
25 | items: [Option<DefId>; std::mem::variant_count::<LangItem>()], | |
26 | /// Lang items that were not found during collection. | |
27 | pub missing: Vec<LangItem>, | |
f035d41b XL |
28 | } |
29 | ||
487cf647 FG |
30 | impl LanguageItems { |
31 | /// Construct an empty collection of lang items and no missing ones. | |
32 | pub fn new() -> Self { | |
33 | Self { items: [None; std::mem::variant_count::<LangItem>()], missing: Vec::new() } | |
34 | } | |
35 | ||
36 | pub fn get(&self, item: LangItem) -> Option<DefId> { | |
37 | self.items[item as usize] | |
38 | } | |
39 | ||
40 | pub fn set(&mut self, item: LangItem, def_id: DefId) { | |
41 | self.items[item as usize] = Some(def_id); | |
42 | } | |
43 | ||
353b0b11 | 44 | pub fn iter(&self) -> impl Iterator<Item = (LangItem, DefId)> + '_ { |
487cf647 FG |
45 | self.items |
46 | .iter() | |
47 | .enumerate() | |
48 | .filter_map(|(i, id)| id.map(|id| (LangItem::from_u32(i as u32).unwrap(), id))) | |
49 | } | |
f035d41b XL |
50 | } |
51 | ||
74b04a01 XL |
52 | // The actual lang items defined come at the end of this file in one handy table. |
53 | // So you probably just want to nip down to the end. | |
54 | macro_rules! language_item_table { | |
55 | ( | |
487cf647 | 56 | $( $(#[$attr:meta])* $variant:ident, $module:ident :: $name:ident, $method:ident, $target:expr, $generics:expr; )* |
74b04a01 XL |
57 | ) => { |
58 | ||
59 | enum_from_u32! { | |
60 | /// A representation of all the valid language items in Rust. | |
3dfed10e | 61 | #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Encodable, Decodable)] |
74b04a01 | 62 | pub enum LangItem { |
6a06907d XL |
63 | $( |
64 | #[doc = concat!("The `", stringify!($name), "` lang item.")] | |
65 | /// | |
66 | $(#[$attr])* | |
67 | $variant, | |
68 | )* | |
74b04a01 XL |
69 | } |
70 | } | |
71 | ||
72 | impl LangItem { | |
3dfed10e | 73 | /// Returns the `name` symbol in `#[lang = "$name"]`. |
6a06907d XL |
74 | /// For example, [`LangItem::PartialEq`]`.name()` |
75 | /// would result in [`sym::eq`] since it is `#[lang = "eq"]`. | |
3dfed10e | 76 | pub fn name(self) -> Symbol { |
74b04a01 | 77 | match self { |
6a06907d | 78 | $( LangItem::$variant => $module::$name, )* |
74b04a01 XL |
79 | } |
80 | } | |
f035d41b | 81 | |
487cf647 FG |
82 | /// Opposite of [`LangItem::name`] |
83 | pub fn from_name(name: Symbol) -> Option<Self> { | |
84 | match name { | |
85 | $( $module::$name => Some(LangItem::$variant), )* | |
86 | _ => None, | |
f035d41b XL |
87 | } |
88 | } | |
94222f64 | 89 | |
487cf647 FG |
90 | /// Returns the name of the `LangItem` enum variant. |
91 | // This method is used by Clippy for internal lints. | |
92 | pub fn variant_name(self) -> &'static str { | |
94222f64 | 93 | match self { |
487cf647 | 94 | $( LangItem::$variant => stringify!($variant), )* |
94222f64 XL |
95 | } |
96 | } | |
74b04a01 | 97 | |
487cf647 FG |
98 | pub fn target(self) -> Target { |
99 | match self { | |
100 | $( LangItem::$variant => $target, )* | |
74b04a01 XL |
101 | } |
102 | } | |
103 | ||
487cf647 FG |
104 | pub fn required_generics(&self) -> GenericRequirement { |
105 | match self { | |
106 | $( LangItem::$variant => $generics, )* | |
107 | } | |
f035d41b | 108 | } |
487cf647 | 109 | } |
f035d41b | 110 | |
487cf647 | 111 | impl LanguageItems { |
74b04a01 | 112 | $( |
6a06907d | 113 | #[doc = concat!("Returns the [`DefId`] of the `", stringify!($name), "` lang item if it is defined.")] |
74b04a01 | 114 | pub fn $method(&self) -> Option<DefId> { |
3dfed10e | 115 | self.items[LangItem::$variant as usize] |
74b04a01 XL |
116 | } |
117 | )* | |
118 | } | |
74b04a01 XL |
119 | } |
120 | } | |
121 | ||
122 | impl<CTX> HashStable<CTX> for LangItem { | |
123 | fn hash_stable(&self, _: &mut CTX, hasher: &mut StableHasher) { | |
124 | ::std::hash::Hash::hash(self, hasher); | |
125 | } | |
126 | } | |
127 | ||
128 | /// Extracts the first `lang = "$name"` out of a list of attributes. | |
487cf647 | 129 | /// The `#[panic_handler]` attribute is also extracted out when found. |
5099ac24 | 130 | pub fn extract(attrs: &[ast::Attribute]) -> Option<(Symbol, Span)> { |
74b04a01 XL |
131 | attrs.iter().find_map(|attr| { |
132 | Some(match attr { | |
5099ac24 FG |
133 | _ if attr.has_name(sym::lang) => (attr.value_str()?, attr.span), |
134 | _ if attr.has_name(sym::panic_handler) => (sym::panic_impl, attr.span), | |
74b04a01 XL |
135 | _ => return None, |
136 | }) | |
137 | }) | |
138 | } | |
139 | ||
140 | language_item_table! { | |
9c376795 | 141 | // Variant name, Name, Getter method name, Target Generic requirements; |
94222f64 XL |
142 | Sized, sym::sized, sized_trait, Target::Trait, GenericRequirement::Exact(0); |
143 | Unsize, sym::unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1); | |
6a06907d | 144 | /// Trait injected by `#[derive(PartialEq)]`, (i.e. "Partial EQ"). |
94222f64 | 145 | StructuralPeq, sym::structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None; |
6a06907d | 146 | /// Trait injected by `#[derive(Eq)]`, (i.e. "Total EQ"; no, I will not apologize). |
94222f64 XL |
147 | StructuralTeq, sym::structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None; |
148 | Copy, sym::copy, copy_trait, Target::Trait, GenericRequirement::Exact(0); | |
149 | Clone, sym::clone, clone_trait, Target::Trait, GenericRequirement::None; | |
150 | Sync, sym::sync, sync_trait, Target::Trait, GenericRequirement::Exact(0); | |
151 | DiscriminantKind, sym::discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None; | |
6a06907d | 152 | /// The associated item of the [`DiscriminantKind`] trait. |
94222f64 XL |
153 | Discriminant, sym::discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None; |
154 | ||
155 | PointeeTrait, sym::pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None; | |
156 | Metadata, sym::metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None; | |
157 | DynMetadata, sym::dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None; | |
158 | ||
159 | Freeze, sym::freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0); | |
160 | ||
353b0b11 FG |
161 | FnPtrTrait, sym::fn_ptr_trait, fn_ptr_trait, Target::Trait, GenericRequirement::Exact(0); |
162 | FnPtrAddr, sym::fn_ptr_addr, fn_ptr_addr, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; | |
163 | ||
94222f64 | 164 | Drop, sym::drop, drop_trait, Target::Trait, GenericRequirement::None; |
5e7ed085 | 165 | Destruct, sym::destruct, destruct_trait, Target::Trait, GenericRequirement::None; |
94222f64 XL |
166 | |
167 | CoerceUnsized, sym::coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1); | |
168 | DispatchFromDyn, sym::dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1); | |
169 | ||
064997fb | 170 | // language items relating to transmutability |
f2b60f7d FG |
171 | TransmuteOpts, sym::transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0); |
172 | TransmuteTrait, sym::transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3); | |
064997fb | 173 | |
487cf647 FG |
174 | Add, sym::add, add_trait, Target::Trait, GenericRequirement::Exact(1); |
175 | Sub, sym::sub, sub_trait, Target::Trait, GenericRequirement::Exact(1); | |
176 | Mul, sym::mul, mul_trait, Target::Trait, GenericRequirement::Exact(1); | |
177 | Div, sym::div, div_trait, Target::Trait, GenericRequirement::Exact(1); | |
178 | Rem, sym::rem, rem_trait, Target::Trait, GenericRequirement::Exact(1); | |
179 | Neg, sym::neg, neg_trait, Target::Trait, GenericRequirement::Exact(0); | |
180 | Not, sym::not, not_trait, Target::Trait, GenericRequirement::Exact(0); | |
181 | BitXor, sym::bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1); | |
182 | BitAnd, sym::bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1); | |
183 | BitOr, sym::bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1); | |
184 | Shl, sym::shl, shl_trait, Target::Trait, GenericRequirement::Exact(1); | |
185 | Shr, sym::shr, shr_trait, Target::Trait, GenericRequirement::Exact(1); | |
186 | AddAssign, sym::add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
187 | SubAssign, sym::sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
188 | MulAssign, sym::mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
189 | DivAssign, sym::div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
190 | RemAssign, sym::rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
191 | BitXorAssign, sym::bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
192 | BitAndAssign, sym::bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
193 | BitOrAssign, sym::bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
194 | ShlAssign, sym::shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
195 | ShrAssign, sym::shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1); | |
196 | Index, sym::index, index_trait, Target::Trait, GenericRequirement::Exact(1); | |
197 | IndexMut, sym::index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1); | |
94222f64 XL |
198 | |
199 | UnsafeCell, sym::unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None; | |
200 | VaList, sym::va_list, va_list, Target::Struct, GenericRequirement::None; | |
201 | ||
202 | Deref, sym::deref, deref_trait, Target::Trait, GenericRequirement::Exact(0); | |
203 | DerefMut, sym::deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0); | |
204 | DerefTarget, sym::deref_target, deref_target, Target::AssocTy, GenericRequirement::None; | |
205 | Receiver, sym::receiver, receiver_trait, Target::Trait, GenericRequirement::None; | |
206 | ||
487cf647 FG |
207 | Fn, kw::Fn, fn_trait, Target::Trait, GenericRequirement::Exact(1); |
208 | FnMut, sym::fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1); | |
209 | FnOnce, sym::fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1); | |
94222f64 XL |
210 | |
211 | FnOnceOutput, sym::fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None; | |
212 | ||
213 | Future, sym::future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0); | |
214 | GeneratorState, sym::generator_state, gen_state, Target::Enum, GenericRequirement::None; | |
215 | Generator, sym::generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1); | |
216 | Unpin, sym::unpin, unpin_trait, Target::Trait, GenericRequirement::None; | |
217 | Pin, sym::pin, pin_type, Target::Struct, GenericRequirement::None; | |
218 | ||
487cf647 FG |
219 | PartialEq, sym::eq, eq_trait, Target::Trait, GenericRequirement::Exact(1); |
220 | PartialOrd, sym::partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1); | |
49aad941 | 221 | CVoid, sym::c_void, c_void, Target::Enum, GenericRequirement::None; |
3dfed10e XL |
222 | |
223 | // A number of panic-related lang items. The `panic` item corresponds to divide-by-zero and | |
224 | // various panic cases with `match`. The `panic_bounds_check` item is for indexing arrays. | |
74b04a01 | 225 | // |
3dfed10e XL |
226 | // The `begin_unwind` lang item has a predefined symbol name and is sort of a "weak lang item" |
227 | // in the sense that a crate is not required to have it defined to use it, but a final product | |
228 | // is required to define it somewhere. Additionally, there are restrictions on crates that use | |
229 | // a weak lang item, but do not have it defined. | |
3c0e092e | 230 | Panic, sym::panic, panic_fn, Target::Fn, GenericRequirement::Exact(0); |
9c376795 | 231 | PanicNounwind, sym::panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0); |
94222f64 | 232 | PanicFmt, sym::panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None; |
c295e0f8 | 233 | PanicDisplay, sym::panic_display, panic_display, Target::Fn, GenericRequirement::None; |
94222f64 | 234 | ConstPanicFmt, sym::const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None; |
3c0e092e | 235 | PanicBoundsCheck, sym::panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0); |
353b0b11 | 236 | PanicMisalignedPointerDereference, sym::panic_misaligned_pointer_dereference, panic_misaligned_pointer_dereference_fn, Target::Fn, GenericRequirement::Exact(0); |
94222f64 XL |
237 | PanicInfo, sym::panic_info, panic_info, Target::Struct, GenericRequirement::None; |
238 | PanicLocation, sym::panic_location, panic_location, Target::Struct, GenericRequirement::None; | |
239 | PanicImpl, sym::panic_impl, panic_impl, Target::Fn, GenericRequirement::None; | |
9c376795 | 240 | PanicCannotUnwind, sym::panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0); |
781aab86 | 241 | PanicInCleanup, sym::panic_in_cleanup, panic_in_cleanup, Target::Fn, GenericRequirement::Exact(0); |
6a06907d | 242 | /// libstd panic entry point. Necessary for const eval to be able to catch it |
94222f64 | 243 | BeginPanic, sym::begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None; |
74b04a01 | 244 | |
9ffffee4 FG |
245 | // Lang items needed for `format_args!()`. |
246 | FormatAlignment, sym::format_alignment, format_alignment, Target::Enum, GenericRequirement::None; | |
247 | FormatArgument, sym::format_argument, format_argument, Target::Struct, GenericRequirement::None; | |
248 | FormatArguments, sym::format_arguments, format_arguments, Target::Struct, GenericRequirement::None; | |
249 | FormatCount, sym::format_count, format_count, Target::Enum, GenericRequirement::None; | |
250 | FormatPlaceholder, sym::format_placeholder, format_placeholder, Target::Struct, GenericRequirement::None; | |
251 | FormatUnsafeArg, sym::format_unsafe_arg, format_unsafe_arg, Target::Struct, GenericRequirement::None; | |
252 | ||
94222f64 | 253 | ExchangeMalloc, sym::exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None; |
94222f64 | 254 | DropInPlace, sym::drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1); |
94222f64 | 255 | AllocLayout, sym::alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None; |
74b04a01 | 256 | |
c295e0f8 | 257 | Start, sym::start, start_fn, Target::Fn, GenericRequirement::Exact(1); |
f035d41b | 258 | |
94222f64 XL |
259 | EhPersonality, sym::eh_personality, eh_personality, Target::Fn, GenericRequirement::None; |
260 | EhCatchTypeinfo, sym::eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None; | |
74b04a01 | 261 | |
94222f64 | 262 | OwnedBox, sym::owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1); |
fe692bf9 FG |
263 | // Experimental language item for Miri |
264 | PtrUnique, sym::ptr_unique, ptr_unique, Target::Struct, GenericRequirement::Exact(1); | |
74b04a01 | 265 | |
94222f64 | 266 | PhantomData, sym::phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1); |
74b04a01 | 267 | |
94222f64 | 268 | ManuallyDrop, sym::manually_drop, manually_drop, Target::Struct, GenericRequirement::None; |
74b04a01 | 269 | |
94222f64 | 270 | MaybeUninit, sym::maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None; |
74b04a01 | 271 | |
6a06907d | 272 | /// Align offset for stride != 1; must not panic. |
94222f64 | 273 | AlignOffset, sym::align_offset, align_offset_fn, Target::Fn, GenericRequirement::None; |
3dfed10e | 274 | |
94222f64 | 275 | Termination, sym::termination, termination, Target::Trait, GenericRequirement::None; |
3dfed10e | 276 | |
94222f64 | 277 | Try, sym::Try, try_trait, Target::Trait, GenericRequirement::None; |
3dfed10e | 278 | |
f2b60f7d FG |
279 | Tuple, sym::tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0); |
280 | ||
94222f64 | 281 | SliceLen, sym::slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; |
136023e0 | 282 | |
3dfed10e | 283 | // Language items from AST lowering |
94222f64 XL |
284 | TryTraitFromResidual, sym::from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
285 | TryTraitFromOutput, sym::from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; | |
286 | TryTraitBranch, sym::branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; | |
04454e1e | 287 | TryTraitFromYeet, sym::from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None; |
94222f64 | 288 | |
9ffffee4 | 289 | PointerLike, sym::pointer_like, pointer_like, Target::Trait, GenericRequirement::Exact(0); |
487cf647 | 290 | |
49aad941 FG |
291 | ConstParamTy, sym::const_param_ty, const_param_ty_trait, Target::Trait, GenericRequirement::Exact(0); |
292 | ||
487cf647 | 293 | Poll, sym::Poll, poll, Target::Enum, GenericRequirement::None; |
94222f64 XL |
294 | PollReady, sym::Ready, poll_ready_variant, Target::Variant, GenericRequirement::None; |
295 | PollPending, sym::Pending, poll_pending_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 296 | |
487cf647 FG |
297 | // FIXME(swatinem): the following lang items are used for async lowering and |
298 | // should become obsolete eventually. | |
299 | ResumeTy, sym::ResumeTy, resume_ty, Target::Struct, GenericRequirement::None; | |
94222f64 | 300 | GetContext, sym::get_context, get_context_fn, Target::Fn, GenericRequirement::None; |
3dfed10e | 301 | |
9c376795 | 302 | Context, sym::Context, context, Target::Struct, GenericRequirement::None; |
94222f64 | 303 | FuturePoll, sym::poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
3dfed10e | 304 | |
353b0b11 | 305 | Option, sym::Option, option_type, Target::Enum, GenericRequirement::None; |
94222f64 XL |
306 | OptionSome, sym::Some, option_some_variant, Target::Variant, GenericRequirement::None; |
307 | OptionNone, sym::None, option_none_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 308 | |
94222f64 XL |
309 | ResultOk, sym::Ok, result_ok_variant, Target::Variant, GenericRequirement::None; |
310 | ResultErr, sym::Err, result_err_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 311 | |
94222f64 XL |
312 | ControlFlowContinue, sym::Continue, cf_continue_variant, Target::Variant, GenericRequirement::None; |
313 | ControlFlowBreak, sym::Break, cf_break_variant, Target::Variant, GenericRequirement::None; | |
3dfed10e | 314 | |
a2a8927a | 315 | IntoFutureIntoFuture, sym::into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
94222f64 XL |
316 | IntoIterIntoIter, sym::into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; |
317 | IteratorNext, sym::next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None; | |
17df50a5 | 318 | |
94222f64 | 319 | PinNewUnchecked, sym::new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; |
74b04a01 | 320 | |
94222f64 XL |
321 | RangeFrom, sym::RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None; |
322 | RangeFull, sym::RangeFull, range_full_struct, Target::Struct, GenericRequirement::None; | |
323 | RangeInclusiveStruct, sym::RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None; | |
324 | RangeInclusiveNew, sym::range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None; | |
325 | Range, sym::Range, range_struct, Target::Struct, GenericRequirement::None; | |
326 | RangeToInclusive, sym::RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None; | |
327 | RangeTo, sym::RangeTo, range_to_struct, Target::Struct, GenericRequirement::None; | |
487cf647 FG |
328 | |
329 | String, sym::String, string, Target::Struct, GenericRequirement::None; | |
49aad941 | 330 | CStr, sym::CStr, c_str, Target::Struct, GenericRequirement::None; |
94222f64 | 331 | } |
f9f354fc | 332 | |
94222f64 XL |
333 | pub enum GenericRequirement { |
334 | None, | |
335 | Minimum(usize), | |
336 | Exact(usize), | |
74b04a01 | 337 | } |
487cf647 FG |
338 | |
339 | pub static FN_TRAITS: &'static [LangItem] = &[LangItem::Fn, LangItem::FnMut, LangItem::FnOnce]; | |
340 | ||
341 | pub static OPERATORS: &'static [LangItem] = &[ | |
342 | LangItem::Add, | |
343 | LangItem::Sub, | |
344 | LangItem::Mul, | |
345 | LangItem::Div, | |
346 | LangItem::Rem, | |
347 | LangItem::Neg, | |
348 | LangItem::Not, | |
349 | LangItem::BitXor, | |
350 | LangItem::BitAnd, | |
351 | LangItem::BitOr, | |
352 | LangItem::Shl, | |
353 | LangItem::Shr, | |
354 | LangItem::AddAssign, | |
355 | LangItem::SubAssign, | |
356 | LangItem::MulAssign, | |
357 | LangItem::DivAssign, | |
358 | LangItem::RemAssign, | |
359 | LangItem::BitXorAssign, | |
360 | LangItem::BitAndAssign, | |
361 | LangItem::BitOrAssign, | |
362 | LangItem::ShlAssign, | |
363 | LangItem::ShrAssign, | |
364 | LangItem::Index, | |
365 | LangItem::IndexMut, | |
366 | LangItem::PartialEq, | |
367 | LangItem::PartialOrd, | |
368 | ]; |