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Auto merge of #14001 - Veykril:lang-item, r=Veykril
Replace SmolStr usage with lang item enum for lang items
Fixes https://github.com/rust-lang/rust-analyzer/issues/13395
24 files changed, 496 insertions, 371 deletions
diff --git a/crates/hir-def/src/db.rs b/crates/hir-def/src/db.rs index 65cdd1b69b..b23427a73b 100644 --- a/crates/hir-def/src/db.rs +++ b/crates/hir-def/src/db.rs @@ -6,7 +6,7 @@ use either::Either; use hir_expand::{db::AstDatabase, HirFileId}; use intern::Interned; use la_arena::ArenaMap; -use syntax::{ast, AstPtr, SmolStr}; +use syntax::{ast, AstPtr}; use crate::{ adt::{EnumData, StructData}, @@ -19,7 +19,7 @@ use crate::{ generics::GenericParams, import_map::ImportMap, item_tree::{AttrOwner, ItemTree}, - lang_item::{LangItemTarget, LangItems}, + lang_item::{LangItem, LangItemTarget, LangItems}, nameres::{diagnostics::DefDiagnostic, DefMap}, visibility::{self, Visibility}, AttrDefId, BlockId, BlockLoc, ConstId, ConstLoc, DefWithBodyId, EnumId, EnumLoc, ExternBlockId, @@ -183,7 +183,7 @@ pub trait DefDatabase: InternDatabase + AstDatabase + Upcast<dyn AstDatabase> { fn crate_lang_items(&self, krate: CrateId) -> Arc<LangItems>; #[salsa::invoke(LangItems::lang_item_query)] - fn lang_item(&self, start_crate: CrateId, item: SmolStr) -> Option<LangItemTarget>; + fn lang_item(&self, start_crate: CrateId, item: LangItem) -> Option<LangItemTarget>; #[salsa::invoke(ImportMap::import_map_query)] fn import_map(&self, krate: CrateId) -> Arc<ImportMap>; diff --git a/crates/hir-def/src/lang_item.rs b/crates/hir-def/src/lang_item.rs index 8778501845..ab9bc615da 100644 --- a/crates/hir-def/src/lang_item.rs +++ b/crates/hir-def/src/lang_item.rs @@ -8,19 +8,21 @@ use rustc_hash::FxHashMap; use syntax::SmolStr; use crate::{ - db::DefDatabase, AdtId, AttrDefId, CrateId, EnumId, EnumVariantId, FunctionId, ImplId, - ModuleDefId, StaticId, StructId, TraitId, + db::DefDatabase, AdtId, AssocItemId, AttrDefId, CrateId, EnumId, EnumVariantId, FunctionId, + ImplId, ModuleDefId, StaticId, StructId, TraitId, TypeAliasId, UnionId, }; #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub enum LangItemTarget { EnumId(EnumId), - FunctionId(FunctionId), - ImplDefId(ImplId), - StaticId(StaticId), - StructId(StructId), - TraitId(TraitId), - EnumVariantId(EnumVariantId), + Function(FunctionId), + ImplDef(ImplId), + Static(StaticId), + Struct(StructId), + Union(UnionId), + TypeAlias(TypeAliasId), + Trait(TraitId), + EnumVariant(EnumVariantId), } impl LangItemTarget { @@ -33,42 +35,42 @@ impl LangItemTarget { pub fn as_function(self) -> Option<FunctionId> { match self { - LangItemTarget::FunctionId(id) => Some(id), + LangItemTarget::Function(id) => Some(id), _ => None, } } pub fn as_impl_def(self) -> Option<ImplId> { match self { - LangItemTarget::ImplDefId(id) => Some(id), + LangItemTarget::ImplDef(id) => Some(id), _ => None, } } pub fn as_static(self) -> Option<StaticId> { match self { - LangItemTarget::StaticId(id) => Some(id), + LangItemTarget::Static(id) => Some(id), _ => None, } } pub fn as_struct(self) -> Option<StructId> { match self { - LangItemTarget::StructId(id) => Some(id), + LangItemTarget::Struct(id) => Some(id), _ => None, } } pub fn as_trait(self) -> Option<TraitId> { match self { - LangItemTarget::TraitId(id) => Some(id), + LangItemTarget::Trait(id) => Some(id), _ => None, } } pub fn as_enum_variant(self) -> Option<EnumVariantId> { match self { - LangItemTarget::EnumVariantId(id) => Some(id), + LangItemTarget::EnumVariant(id) => Some(id), _ => None, } } @@ -76,12 +78,12 @@ impl LangItemTarget { #[derive(Default, Debug, Clone, PartialEq, Eq)] pub struct LangItems { - items: FxHashMap<SmolStr, LangItemTarget>, + items: FxHashMap<LangItem, LangItemTarget>, } impl LangItems { - pub fn target(&self, item: &str) -> Option<LangItemTarget> { - self.items.get(item).copied() + pub fn target(&self, item: LangItem) -> Option<LangItemTarget> { + self.items.get(&item).copied() } /// Salsa query. This will look for lang items in a specific crate. @@ -94,16 +96,27 @@ impl LangItems { for (_, module_data) in crate_def_map.modules() { for impl_def in module_data.scope.impls() { - lang_items.collect_lang_item(db, impl_def, LangItemTarget::ImplDefId) + lang_items.collect_lang_item(db, impl_def, LangItemTarget::ImplDef); + for assoc in db.impl_data(impl_def).items.iter().copied() { + match assoc { + AssocItemId::FunctionId(f) => { + lang_items.collect_lang_item(db, f, LangItemTarget::Function) + } + AssocItemId::TypeAliasId(t) => { + lang_items.collect_lang_item(db, t, LangItemTarget::TypeAlias) + } + AssocItemId::ConstId(_) => (), + } + } } for def in module_data.scope.declarations() { match def { ModuleDefId::TraitId(trait_) => { - lang_items.collect_lang_item(db, trait_, LangItemTarget::TraitId); + lang_items.collect_lang_item(db, trait_, LangItemTarget::Trait); db.trait_data(trait_).items.iter().for_each(|&(_, assoc_id)| { - if let crate::AssocItemId::FunctionId(f) = assoc_id { - lang_items.collect_lang_item(db, f, LangItemTarget::FunctionId); + if let AssocItemId::FunctionId(f) = assoc_id { + lang_items.collect_lang_item(db, f, LangItemTarget::Function); } }); } @@ -113,18 +126,24 @@ impl LangItems { lang_items.collect_lang_item( db, EnumVariantId { parent: e, local_id }, - LangItemTarget::EnumVariantId, + LangItemTarget::EnumVariant, ); }); } ModuleDefId::AdtId(AdtId::StructId(s)) => { - lang_items.collect_lang_item(db, s, LangItemTarget::StructId); + lang_items.collect_lang_item(db, s, LangItemTarget::Struct); + } + ModuleDefId::AdtId(AdtId::UnionId(u)) => { + lang_items.collect_lang_item(db, u, LangItemTarget::Union); } ModuleDefId::FunctionId(f) => { - lang_items.collect_lang_item(db, f, LangItemTarget::FunctionId); + lang_items.collect_lang_item(db, f, LangItemTarget::Function); } ModuleDefId::StaticId(s) => { - lang_items.collect_lang_item(db, s, LangItemTarget::StaticId); + lang_items.collect_lang_item(db, s, LangItemTarget::Static); + } + ModuleDefId::TypeAliasId(t) => { + lang_items.collect_lang_item(db, t, LangItemTarget::TypeAlias); } _ => {} } @@ -139,7 +158,7 @@ impl LangItems { pub(crate) fn lang_item_query( db: &dyn DefDatabase, start_crate: CrateId, - item: SmolStr, + item: LangItem, ) -> Option<LangItemTarget> { let _p = profile::span("lang_item_query"); let lang_items = db.crate_lang_items(start_crate); @@ -150,7 +169,7 @@ impl LangItems { db.crate_graph()[start_crate] .dependencies .iter() - .find_map(|dep| db.lang_item(dep.crate_id, item.clone())) + .find_map(|dep| db.lang_item(dep.crate_id, item)) } fn collect_lang_item<T>( @@ -162,8 +181,8 @@ impl LangItems { T: Into<AttrDefId> + Copy, { let _p = profile::span("collect_lang_item"); - if let Some(lang_item_name) = lang_attr(db, item) { - self.items.entry(lang_item_name).or_insert_with(|| constructor(item)); + if let Some(lang_item) = lang_attr(db, item).and_then(|it| LangItem::from_str(&it)) { + self.items.entry(lang_item).or_insert_with(|| constructor(item)); } } } @@ -172,3 +191,224 @@ pub fn lang_attr(db: &dyn DefDatabase, item: impl Into<AttrDefId> + Copy) -> Opt let attrs = db.attrs(item.into()); attrs.by_key("lang").string_value().cloned() } + +pub enum GenericRequirement { + None, + Minimum(usize), + Exact(usize), +} + +macro_rules! language_item_table { + ( + $( $(#[$attr:meta])* $variant:ident, $name:ident, $method:ident, $target:expr, $generics:expr; )* + ) => { + + /// A representation of all the valid language items in Rust. + #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash)] + pub enum LangItem { + $( + #[doc = concat!("The `", stringify!($name), "` lang item.")] + $(#[$attr])* + $variant, + )* + } + + impl LangItem { + pub fn name(self) -> SmolStr { + match self { + $( LangItem::$variant => SmolStr::new(stringify!($name)), )* + } + } + + /// Opposite of [`LangItem::name`] + pub fn from_name(name: &hir_expand::name::Name) -> Option<Self> { + Self::from_str(name.as_str()?) + } + + /// Opposite of [`LangItem::name`] + pub fn from_str(name: &str) -> Option<Self> { + match name { + $( stringify!($name) => Some(LangItem::$variant), )* + _ => None, + } + } + } + } +} + +language_item_table! { +// Variant name, Name, Getter method name, Target Generic requirements; + Sized, sized, sized_trait, Target::Trait, GenericRequirement::Exact(0); + Unsize, unsize, unsize_trait, Target::Trait, GenericRequirement::Minimum(1); + /// Trait injected by `#[derive(PartialEq)]`, (i.e. "Partial EQ"). + StructuralPeq, structural_peq, structural_peq_trait, Target::Trait, GenericRequirement::None; + /// Trait injected by `#[derive(Eq)]`, (i.e. "Total EQ"; no, I will not apologize). + StructuralTeq, structural_teq, structural_teq_trait, Target::Trait, GenericRequirement::None; + Copy, copy, copy_trait, Target::Trait, GenericRequirement::Exact(0); + Clone, clone, clone_trait, Target::Trait, GenericRequirement::None; + Sync, sync, sync_trait, Target::Trait, GenericRequirement::Exact(0); + DiscriminantKind, discriminant_kind, discriminant_kind_trait, Target::Trait, GenericRequirement::None; + /// The associated item of the [`DiscriminantKind`] trait. + Discriminant, discriminant_type, discriminant_type, Target::AssocTy, GenericRequirement::None; + + PointeeTrait, pointee_trait, pointee_trait, Target::Trait, GenericRequirement::None; + Metadata, metadata_type, metadata_type, Target::AssocTy, GenericRequirement::None; + DynMetadata, dyn_metadata, dyn_metadata, Target::Struct, GenericRequirement::None; + + Freeze, freeze, freeze_trait, Target::Trait, GenericRequirement::Exact(0); + + Drop, drop, drop_trait, Target::Trait, GenericRequirement::None; + Destruct, destruct, destruct_trait, Target::Trait, GenericRequirement::None; + + CoerceUnsized, coerce_unsized, coerce_unsized_trait, Target::Trait, GenericRequirement::Minimum(1); + DispatchFromDyn, dispatch_from_dyn, dispatch_from_dyn_trait, Target::Trait, GenericRequirement::Minimum(1); + + // language items relating to transmutability + TransmuteOpts, transmute_opts, transmute_opts, Target::Struct, GenericRequirement::Exact(0); + TransmuteTrait, transmute_trait, transmute_trait, Target::Trait, GenericRequirement::Exact(3); + + Add, add, add_trait, Target::Trait, GenericRequirement::Exact(1); + Sub, sub, sub_trait, Target::Trait, GenericRequirement::Exact(1); + Mul, mul, mul_trait, Target::Trait, GenericRequirement::Exact(1); + Div, div, div_trait, Target::Trait, GenericRequirement::Exact(1); + Rem, rem, rem_trait, Target::Trait, GenericRequirement::Exact(1); + Neg, neg, neg_trait, Target::Trait, GenericRequirement::Exact(0); + Not, not, not_trait, Target::Trait, GenericRequirement::Exact(0); + BitXor, bitxor, bitxor_trait, Target::Trait, GenericRequirement::Exact(1); + BitAnd, bitand, bitand_trait, Target::Trait, GenericRequirement::Exact(1); + BitOr, bitor, bitor_trait, Target::Trait, GenericRequirement::Exact(1); + Shl, shl, shl_trait, Target::Trait, GenericRequirement::Exact(1); + Shr, shr, shr_trait, Target::Trait, GenericRequirement::Exact(1); + AddAssign, add_assign, add_assign_trait, Target::Trait, GenericRequirement::Exact(1); + SubAssign, sub_assign, sub_assign_trait, Target::Trait, GenericRequirement::Exact(1); + MulAssign, mul_assign, mul_assign_trait, Target::Trait, GenericRequirement::Exact(1); + DivAssign, div_assign, div_assign_trait, Target::Trait, GenericRequirement::Exact(1); + RemAssign, rem_assign, rem_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitXorAssign, bitxor_assign, bitxor_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitAndAssign, bitand_assign, bitand_assign_trait, Target::Trait, GenericRequirement::Exact(1); + BitOrAssign, bitor_assign, bitor_assign_trait, Target::Trait, GenericRequirement::Exact(1); + ShlAssign, shl_assign, shl_assign_trait, Target::Trait, GenericRequirement::Exact(1); + ShrAssign, shr_assign, shr_assign_trait, Target::Trait, GenericRequirement::Exact(1); + Index, index, index_trait, Target::Trait, GenericRequirement::Exact(1); + IndexMut, index_mut, index_mut_trait, Target::Trait, GenericRequirement::Exact(1); + + UnsafeCell, unsafe_cell, unsafe_cell_type, Target::Struct, GenericRequirement::None; + VaList, va_list, va_list, Target::Struct, GenericRequirement::None; + + Deref, deref, deref_trait, Target::Trait, GenericRequirement::Exact(0); + DerefMut, deref_mut, deref_mut_trait, Target::Trait, GenericRequirement::Exact(0); + DerefTarget, deref_target, deref_target, Target::AssocTy, GenericRequirement::None; + Receiver, receiver, receiver_trait, Target::Trait, GenericRequirement::None; + + Fn, fn, fn_trait, Target::Trait, GenericRequirement::Exact(1); + FnMut, fn_mut, fn_mut_trait, Target::Trait, GenericRequirement::Exact(1); + FnOnce, fn_once, fn_once_trait, Target::Trait, GenericRequirement::Exact(1); + + FnOnceOutput, fn_once_output, fn_once_output, Target::AssocTy, GenericRequirement::None; + + Future, future_trait, future_trait, Target::Trait, GenericRequirement::Exact(0); + GeneratorState, generator_state, gen_state, Target::Enum, GenericRequirement::None; + Generator, generator, gen_trait, Target::Trait, GenericRequirement::Minimum(1); + Unpin, unpin, unpin_trait, Target::Trait, GenericRequirement::None; + Pin, pin, pin_type, Target::Struct, GenericRequirement::None; + + PartialEq, eq, eq_trait, Target::Trait, GenericRequirement::Exact(1); + PartialOrd, partial_ord, partial_ord_trait, Target::Trait, GenericRequirement::Exact(1); + + // A number of panic-related lang items. The `panic` item corresponds to divide-by-zero and + // various panic cases with `match`. The `panic_bounds_check` item is for indexing arrays. + // + // The `begin_unwind` lang item has a predefined symbol name and is sort of a "weak lang item" + // in the sense that a crate is not required to have it defined to use it, but a final product + // is required to define it somewhere. Additionally, there are restrictions on crates that use + // a weak lang item, but do not have it defined. + Panic, panic, panic_fn, Target::Fn, GenericRequirement::Exact(0); + PanicNounwind, panic_nounwind, panic_nounwind, Target::Fn, GenericRequirement::Exact(0); + PanicFmt, panic_fmt, panic_fmt, Target::Fn, GenericRequirement::None; + PanicDisplay, panic_display, panic_display, Target::Fn, GenericRequirement::None; + ConstPanicFmt, const_panic_fmt, const_panic_fmt, Target::Fn, GenericRequirement::None; + PanicBoundsCheck, panic_bounds_check, panic_bounds_check_fn, Target::Fn, GenericRequirement::Exact(0); + PanicInfo, panic_info, panic_info, Target::Struct, GenericRequirement::None; + PanicLocation, panic_location, panic_location, Target::Struct, GenericRequirement::None; + PanicImpl, panic_impl, panic_impl, Target::Fn, GenericRequirement::None; + PanicCannotUnwind, panic_cannot_unwind, panic_cannot_unwind, Target::Fn, GenericRequirement::Exact(0); + /// libstd panic entry point. Necessary for const eval to be able to catch it + BeginPanic, begin_panic, begin_panic_fn, Target::Fn, GenericRequirement::None; + + ExchangeMalloc, exchange_malloc, exchange_malloc_fn, Target::Fn, GenericRequirement::None; + BoxFree, box_free, box_free_fn, Target::Fn, GenericRequirement::Minimum(1); + DropInPlace, drop_in_place, drop_in_place_fn, Target::Fn, GenericRequirement::Minimum(1); + AllocLayout, alloc_layout, alloc_layout, Target::Struct, GenericRequirement::None; + + Start, start, start_fn, Target::Fn, GenericRequirement::Exact(1); + + EhPersonality, eh_personality, eh_personality, Target::Fn, GenericRequirement::None; + EhCatchTypeinfo, eh_catch_typeinfo, eh_catch_typeinfo, Target::Static, GenericRequirement::None; + + OwnedBox, owned_box, owned_box, Target::Struct, GenericRequirement::Minimum(1); + + PhantomData, phantom_data, phantom_data, Target::Struct, GenericRequirement::Exact(1); + + ManuallyDrop, manually_drop, manually_drop, Target::Struct, GenericRequirement::None; + + MaybeUninit, maybe_uninit, maybe_uninit, Target::Union, GenericRequirement::None; + + /// Align offset for stride != 1; must not panic. + AlignOffset, align_offset, align_offset_fn, Target::Fn, GenericRequirement::None; + + Termination, termination, termination, Target::Trait, GenericRequirement::None; + + Try, Try, try_trait, Target::Trait, GenericRequirement::None; + + Tuple, tuple_trait, tuple_trait, Target::Trait, GenericRequirement::Exact(0); + + SliceLen, slice_len_fn, slice_len_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; + + // Language items from AST lowering + TryTraitFromResidual, from_residual, from_residual_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitFromOutput, from_output, from_output_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitBranch, branch, branch_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + TryTraitFromYeet, from_yeet, from_yeet_fn, Target::Fn, GenericRequirement::None; + + PointerSized, pointer_sized, pointer_sized, Target::Trait, GenericRequirement::Exact(0); + + Poll, Poll, poll, Target::Enum, GenericRequirement::None; + PollReady, Ready, poll_ready_variant, Target::Variant, GenericRequirement::None; + PollPending, Pending, poll_pending_variant, Target::Variant, GenericRequirement::None; + + // FIXME(swatinem): the following lang items are used for async lowering and + // should become obsolete eventually. + ResumeTy, ResumeTy, resume_ty, Target::Struct, GenericRequirement::None; + IdentityFuture, identity_future, identity_future_fn, Target::Fn, GenericRequirement::None; + GetContext, get_context, get_context_fn, Target::Fn, GenericRequirement::None; + + Context, Context, context, Target::Struct, GenericRequirement::None; + FuturePoll, poll, future_poll_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + + FromFrom, from, from_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + + OptionSome, Some, option_some_variant, Target::Variant, GenericRequirement::None; + OptionNone, None, option_none_variant, Target::Variant, GenericRequirement::None; + + ResultOk, Ok, result_ok_variant, Target::Variant, GenericRequirement::None; + ResultErr, Err, result_err_variant, Target::Variant, GenericRequirement::None; + + ControlFlowContinue, Continue, cf_continue_variant, Target::Variant, GenericRequirement::None; + ControlFlowBreak, Break, cf_break_variant, Target::Variant, GenericRequirement::None; + + IntoFutureIntoFuture, into_future, into_future_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + IntoIterIntoIter, into_iter, into_iter_fn, Target::Method(MethodKind::Trait { body: false }), GenericRequirement::None; + IteratorNext, next, next_fn, Target::Method(MethodKind::Trait { body: false}), GenericRequirement::None; + + PinNewUnchecked, new_unchecked, new_unchecked_fn, Target::Method(MethodKind::Inherent), GenericRequirement::None; + + RangeFrom, RangeFrom, range_from_struct, Target::Struct, GenericRequirement::None; + RangeFull, RangeFull, range_full_struct, Target::Struct, GenericRequirement::None; + RangeInclusiveStruct, RangeInclusive, range_inclusive_struct, Target::Struct, GenericRequirement::None; + RangeInclusiveNew, range_inclusive_new, range_inclusive_new_method, Target::Method(MethodKind::Inherent), GenericRequirement::None; + Range, Range, range_struct, Target::Struct, GenericRequirement::None; + RangeToInclusive, RangeToInclusive, range_to_inclusive_struct, Target::Struct, GenericRequirement::None; + RangeTo, RangeTo, range_to_struct, Target::Struct, GenericRequirement::None; + + String, String, string, Target::Struct, GenericRequirement::None; +} diff --git a/crates/hir-expand/src/name.rs b/crates/hir-expand/src/name.rs index e8b3e312aa..b62f4fe770 100644 --- a/crates/hir-expand/src/name.rs +++ b/crates/hir-expand/src/name.rs @@ -133,6 +133,14 @@ impl Name { } } + /// Returns the text this name represents if it isn't a tuple field. + pub fn as_str(&self) -> Option<&str> { + match &self.0 { + Repr::Text(it) => Some(it), + _ => None, + } + } + /// Returns the textual representation of this name as a [`SmolStr`]. /// Prefer using this over [`ToString::to_string`] if possible as this conversion is cheaper in /// the general case. diff --git a/crates/hir-ty/src/autoderef.rs b/crates/hir-ty/src/autoderef.rs index cbcf8f74c5..caddca6d91 100644 --- a/crates/hir-ty/src/autoderef.rs +++ b/crates/hir-ty/src/autoderef.rs @@ -6,9 +6,9 @@ use std::sync::Arc; use chalk_ir::cast::Cast; +use hir_def::lang_item::LangItem; use hir_expand::name::name; use limit::Limit; -use syntax::SmolStr; use crate::{ db::HirDatabase, infer::unify::InferenceTable, Canonical, Goal, Interner, ProjectionTyExt, @@ -117,9 +117,8 @@ fn deref_by_trait(table: &mut InferenceTable<'_>, ty: Ty) -> Option<Ty> { } let db = table.db; - let deref_trait = db - .lang_item(table.trait_env.krate, SmolStr::new_inline("deref")) - .and_then(|l| l.as_trait())?; + let deref_trait = + db.lang_item(table.trait_env.krate, LangItem::Deref).and_then(|l| l.as_trait())?; let target = db.trait_data(deref_trait).associated_type_by_name(&name![Target])?; let projection = { diff --git a/crates/hir-ty/src/chalk_db.rs b/crates/hir-ty/src/chalk_db.rs index 1c2b8de7f7..bbb6625855 100644 --- a/crates/hir-ty/src/chalk_db.rs +++ b/crates/hir-ty/src/chalk_db.rs @@ -3,7 +3,6 @@ use std::sync::Arc; use cov_mark::hit; -use syntax::SmolStr; use tracing::debug; use chalk_ir::{cast::Cast, fold::shift::Shift, CanonicalVarKinds}; @@ -12,7 +11,7 @@ use chalk_solve::rust_ir::{self, OpaqueTyDatumBound, WellKnownTrait}; use base_db::CrateId; use hir_def::{ expr::Movability, - lang_item::{lang_attr, LangItemTarget}, + lang_item::{lang_attr, LangItem, LangItemTarget}, AssocItemId, GenericDefId, HasModule, ItemContainerId, Lookup, ModuleId, TypeAliasId, }; use hir_expand::name::name; @@ -182,9 +181,9 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> { &self, well_known_trait: rust_ir::WellKnownTrait, ) -> Option<chalk_ir::TraitId<Interner>> { - let lang_attr = lang_attr_from_well_known_trait(well_known_trait); + let lang_attr = lang_item_from_well_known_trait(well_known_trait); let trait_ = match self.db.lang_item(self.krate, lang_attr.into()) { - Some(LangItemTarget::TraitId(trait_)) => trait_, + Some(LangItemTarget::Trait(trait_)) => trait_, _ => return None, }; Some(to_chalk_trait_id(trait_)) @@ -216,7 +215,7 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> { crate::ImplTraitId::AsyncBlockTypeImplTrait(..) => { if let Some((future_trait, future_output)) = self .db - .lang_item(self.krate, SmolStr::new_inline("future_trait")) + .lang_item(self.krate, LangItem::Future) .and_then(|item| item.as_trait()) .and_then(|trait_| { let alias = @@ -246,7 +245,7 @@ impl<'a> chalk_solve::RustIrDatabase<Interner> for ChalkContext<'a> { binder.push(crate::wrap_empty_binders(impl_bound)); let sized_trait = self .db - .lang_item(self.krate, SmolStr::new_inline("sized")) + .lang_item(self.krate, LangItem::Sized) .and_then(|item| item.as_trait()); if let Some(sized_trait_) = sized_trait { let sized_bound = WhereClause::Implemented(TraitRef { @@ -493,7 +492,7 @@ pub(crate) fn associated_ty_data_query( if !ctx.unsized_types.borrow().contains(&self_ty) { let sized_trait = db - .lang_item(resolver.krate(), SmolStr::new_inline("sized")) + .lang_item(resolver.krate(), LangItem::Sized) .and_then(|lang_item| lang_item.as_trait().map(to_chalk_trait_id)); let sized_bound = sized_trait.into_iter().map(|sized_trait| { let trait_bound = @@ -541,8 +540,8 @@ pub(crate) fn trait_datum_query( let where_clauses = convert_where_clauses(db, trait_.into(), &bound_vars); let associated_ty_ids = trait_data.associated_types().map(to_assoc_type_id).collect(); let trait_datum_bound = rust_ir::TraitDatumBound { where_clauses }; - let well_known = - lang_attr(db.upcast(), trait_).and_then(|name| well_known_trait_from_lang_attr(&name)); + let well_known = lang_attr(db.upcast(), trait_) + .and_then(|name| well_known_trait_from_lang_item(LangItem::from_str(&name)?)); let trait_datum = TraitDatum { id: trait_id, binders: make_binders(db, &generic_params, trait_datum_bound), @@ -553,42 +552,42 @@ pub(crate) fn trait_datum_query( Arc::new(trait_datum) } -fn well_known_trait_from_lang_attr(name: &str) -> Option<WellKnownTrait> { - Some(match name { - "clone" => WellKnownTrait::Clone, - "coerce_unsized" => WellKnownTrait::CoerceUnsized, - "copy" => WellKnownTrait::Copy, - "discriminant_kind" => WellKnownTrait::DiscriminantKind, - "dispatch_from_dyn" => WellKnownTrait::DispatchFromDyn, - "drop" => WellKnownTrait::Drop, - "fn" => WellKnownTrait::Fn, - "fn_mut" => WellKnownTrait::FnMut, - "fn_once" => WellKnownTrait::FnOnce, - "generator" => WellKnownTrait::Generator, - "sized" => WellKnownTrait::Sized, - "unpin" => WellKnownTrait::Unpin, - "unsize" => WellKnownTrait::Unsize, - "tuple_trait" => WellKnownTrait::Tuple, +fn well_known_trait_from_lang_item(item: LangItem) -> Option<WellKnownTrait> { + Some(match item { + LangItem::Clone => WellKnownTrait::Clone, + LangItem::CoerceUnsized => WellKnownTrait::CoerceUnsized, + LangItem::Copy => WellKnownTrait::Copy, + LangItem::DiscriminantKind => WellKnownTrait::DiscriminantKind, + LangItem::DispatchFromDyn => WellKnownTrait::DispatchFromDyn, + LangItem::Drop => WellKnownTrait::Drop, + LangItem::Fn => WellKnownTrait::Fn, + LangItem::FnMut => WellKnownTrait::FnMut, + LangItem::FnOnce => WellKnownTrait::FnOnce, + LangItem::Generator => WellKnownTrait::Generator, + LangItem::Sized => WellKnownTrait::Sized, + LangItem::Unpin => WellKnownTrait::Unpin, + LangItem::Unsize => WellKnownTrait::Unsize, + LangItem::Tuple => WellKnownTrait::Tuple, _ => return None, }) } -fn lang_attr_from_well_known_trait(attr: WellKnownTrait) -> &'static str { - match attr { - WellKnownTrait::Clone => "clone", - WellKnownTrait::CoerceUnsized => "coerce_unsized", - WellKnownTrait::Copy => "copy", - WellKnownTrait::DiscriminantKind => "discriminant_kind", - WellKnownTrait::DispatchFromDyn => "dispatch_from_dyn", - WellKnownTrait::Drop => "drop", - WellKnownTrait::Fn => "fn", - WellKnownTrait::FnMut => "fn_mut", - WellKnownTrait::FnOnce => "fn_once", - WellKnownTrait::Generator => "generator", - WellKnownTrait::Sized => "sized", - WellKnownTrait::Tuple => "tuple_trait", - WellKnownTrait::Unpin => "unpin", - WellKnownTrait::Unsize => "unsize", +fn lang_item_from_well_known_trait(trait_: WellKnownTrait) -> LangItem { + match trait_ { + WellKnownTrait::Clone => LangItem::Clone, + WellKnownTrait::CoerceUnsized => LangItem::CoerceUnsized, + WellKnownTrait::Copy => LangItem::Copy, + WellKnownTrait::DiscriminantKind => LangItem::DiscriminantKind, + WellKnownTrait::DispatchFromDyn => LangItem::DispatchFromDyn, + WellKnownTrait::Drop => LangItem::Drop, + WellKnownTrait::Fn => LangItem::Fn, + WellKnownTrait::FnMut => LangItem::FnMut, + WellKnownTrait::FnOnce => LangItem::FnOnce, + WellKnownTrait::Generator => LangItem::Generator, + WellKnownTrait::Sized => LangItem::Sized, + WellKnownTrait::Tuple => LangItem::Tuple, + WellKnownTrait::Unpin => LangItem::Unpin, + WellKnownTrait::Unsize => LangItem::Unsize, } } diff --git a/crates/hir-ty/src/chalk_ext.rs b/crates/hir-ty/src/chalk_ext.rs index 0244b6c653..329c87c74e 100644 --- a/crates/hir-ty/src/chalk_ext.rs +++ b/crates/hir-ty/src/chalk_ext.rs @@ -4,10 +4,10 @@ use chalk_ir::{FloatTy, IntTy, Mutability, Scalar, TyVariableKind, UintTy}; use hir_def::{ builtin_type::{BuiltinFloat, BuiltinInt, BuiltinType, BuiltinUint}, generics::TypeOrConstParamData, + lang_item::LangItem, type_ref::Rawness, FunctionId, GenericDefId, HasModule, ItemContainerId, Lookup, TraitId, }; -use syntax::SmolStr; use crate::{ db::HirDatabase, from_assoc_type_id, from_chalk_trait_id, from_foreign_def_id, @@ -214,9 +214,8 @@ impl TyExt for Ty { match db.lookup_intern_impl_trait_id((*opaque_ty_id).into()) { ImplTraitId::AsyncBlockTypeImplTrait(def, _expr) => { let krate = def.module(db.upcast()).krate(); - if let Some(future_trait) = db - .lang_item(krate, SmolStr::new_inline("future_trait")) - .and_then(|item| item.as_trait()) + if let Some(future_trait) = + db.lang_item(krate, LangItem::Future).and_then(|item| item.as_trait()) { // This is only used by type walking. // Parameters will be walked outside, and projection predicate is not used. diff --git a/crates/hir-ty/src/diagnostics/expr.rs b/crates/hir-ty/src/diagnostics/expr.rs index c8df4c796e..3286dcb5af 100644 --- a/crates/hir-ty/src/diagnostics/expr.rs +++ b/crates/hir-ty/src/diagnostics/expr.rs @@ -5,7 +5,9 @@ use std::fmt; use std::sync::Arc; -use hir_def::{path::path, resolver::HasResolver, AdtId, AssocItemId, DefWithBodyId, HasModule}; +use hir_def::lang_item::LangItem; +use hir_def::{resolver::HasResolver, AdtId, AssocItemId, DefWithBodyId, HasModule}; +use hir_def::{ItemContainerId, Lookup}; use hir_expand::name; use itertools::Either; use itertools::Itertools; @@ -245,26 +247,25 @@ struct FilterMapNextChecker { impl FilterMapNextChecker { fn new(resolver: &hir_def::resolver::Resolver, db: &dyn HirDatabase) -> Self { // Find and store the FunctionIds for Iterator::filter_map and Iterator::next - let iterator_path = path![core::iter::Iterator]; - let mut filter_map_function_id = None; - let mut next_function_id = None; - - if let Some(iterator_trait_id) = resolver.resolve_known_trait(db.upcast(), &iterator_path) { - let iterator_trait_items = &db.trait_data(iterator_trait_id).items; - for item in iterator_trait_items.iter() { - if let (name, AssocItemId::FunctionId(id)) = item { - if *name == name![filter_map] { - filter_map_function_id = Some(*id); + let (next_function_id, filter_map_function_id) = match db + .lang_item(resolver.krate(), LangItem::IteratorNext) + .and_then(|it| it.as_function()) + { + Some(next_function_id) => ( + Some(next_function_id), + match next_function_id.lookup(db.upcast()).container { + ItemContainerId::TraitId(iterator_trait_id) => { + let iterator_trait_items = &db.trait_data(iterator_trait_id).items; + iterator_trait_items.iter().find_map(|(name, it)| match it { + &AssocItemId::FunctionId(id) if *name == name![filter_map] => Some(id), + _ => None, + }) } - if *name == name![next] { - next_function_id = Some(*id); - } - } - if filter_map_function_id.is_some() && next_function_id.is_some() { - break; - } - } - } + _ => None, + }, + ), + None => (None, None), + }; Self { filter_map_function_id, next_function_id, prev_filter_map_expr_id: None } } diff --git a/crates/hir-ty/src/display.rs b/crates/hir-ty/src/display.rs index 3a96e53d71..ae2162dd7c 100644 --- a/crates/hir-ty/src/display.rs +++ b/crates/hir-ty/src/display.rs @@ -12,6 +12,7 @@ use hir_def::{ find_path, generics::{TypeOrConstParamData, TypeParamProvenance}, item_scope::ItemInNs, + lang_item::LangItem, path::{Path, PathKind}, type_ref::{ConstScalar, TraitBoundModifier, TypeBound, TypeRef}, visibility::Visibility, @@ -21,7 +22,6 @@ use hir_expand::{hygiene::Hygiene, name::Name}; use intern::{Internable, Interned}; use itertools::Itertools; use smallvec::SmallVec; -use syntax::SmolStr; use crate::{ db::HirDatabase, @@ -925,7 +925,7 @@ impl SizedByDefault { Self::NotSized => false, Self::Sized { anchor } => { let sized_trait = db - .lang_item(anchor, SmolStr::new_inline("sized")) + .lang_item(anchor, LangItem::Sized) .and_then(|lang_item| lang_item.as_trait()); Some(trait_) == sized_trait } @@ -1057,8 +1057,7 @@ fn write_bounds_like_dyn_trait( } if let SizedByDefault::Sized { anchor } = default_sized { let sized_trait = - f.db.lang_item(anchor, SmolStr::new_inline("sized")) - .and_then(|lang_item| lang_item.as_trait()); + f.db.lang_item(anchor, LangItem::Sized).and_then(|lang_item| lang_item.as_trait()); if !is_sized { if !first { write!(f, " + ")?; diff --git a/crates/hir-ty/src/infer.rs b/crates/hir-ty/src/infer.rs index 0e177db772..4402c75947 100644 --- a/crates/hir-ty/src/infer.rs +++ b/crates/hir-ty/src/infer.rs @@ -22,15 +22,15 @@ use hir_def::{ builtin_type::{BuiltinInt, BuiltinType, BuiltinUint}, data::{ConstData, StaticData}, expr::{BindingAnnotation, ExprId, ExprOrPatId, PatId}, - lang_item::LangItemTarget, + lang_item::{LangItem, LangItemTarget}, layout::Integer, - path::{path, Path}, + path::Path, resolver::{HasResolver, ResolveValueResult, Resolver, TypeNs, ValueNs}, type_ref::TypeRef, AdtId, AssocItemId, DefWithBodyId, EnumVariantId, FieldId, FunctionId, HasModule, ItemContainerId, Lookup, TraitId, TypeAliasId, VariantId, }; -use hir_expand::name::{name, Name}; +use hir_expand::name::name; use itertools::Either; use la_arena::ArenaMap; use rustc_hash::FxHashMap; @@ -917,95 +917,89 @@ impl<'a> InferenceContext<'a> { } } - fn resolve_lang_item(&self, name: Name) -> Option<LangItemTarget> { + fn resolve_lang_item(&self, item: LangItem) -> Option<LangItemTarget> { let krate = self.resolver.krate(); - self.db.lang_item(krate, name.to_smol_str()) + self.db.lang_item(krate, item) } fn resolve_into_iter_item(&self) -> Option<TypeAliasId> { - let path = path![core::iter::IntoIterator]; - let trait_ = self.resolver.resolve_known_trait(self.db.upcast(), &path)?; + let ItemContainerId::TraitId(trait_) = self.resolve_lang_item(LangItem::IntoIterIntoIter)? + .as_function()? + .lookup(self.db.upcast()).container + else { return None }; self.db.trait_data(trait_).associated_type_by_name(&name![IntoIter]) } fn resolve_iterator_item(&self) -> Option<TypeAliasId> { - let path = path![core::iter::Iterator]; - let trait_ = self.resolver.resolve_known_trait(self.db.upcast(), &path)?; + let ItemContainerId::TraitId(trait_) = self.resolve_lang_item(LangItem::IteratorNext)? + .as_function()? + .lookup(self.db.upcast()).container + else { return None }; self.db.trait_data(trait_).associated_type_by_name(&name![Item]) } fn resolve_ops_try_ok(&self) -> Option<TypeAliasId> { - // FIXME resolve via lang_item once try v2 is stable - let path = path![core::ops::Try]; - let trait_ = self.resolver.resolve_known_trait(self.db.upcast(), &path)?; - let trait_data = self.db.trait_data(trait_); - trait_data - // FIXME remove once try v2 is stable - .associated_type_by_name(&name![Ok]) - .or_else(|| trait_data.associated_type_by_name(&name![Output])) + let trait_ = self.resolve_lang_item(LangItem::Try)?.as_trait()?; + self.db.trait_data(trait_).associated_type_by_name(&name![Output]) } fn resolve_ops_neg_output(&self) -> Option<TypeAliasId> { - let trait_ = self.resolve_lang_item(name![neg])?.as_trait()?; + let trait_ = self.resolve_lang_item(LangItem::Neg)?.as_trait()?; self.db.trait_data(trait_).associated_type_by_name(&name![Output]) } fn resolve_ops_not_output(&self) -> Option<TypeAliasId> { - let trait_ = self.resolve_lang_item(name![not])?.as_trait()?; + let trait_ = self.resolve_lang_item(LangItem::Not)?.as_trait()?; self.db.trait_data(trait_).associated_type_by_name(&name![Output]) } fn resolve_future_future_output(&self) -> Option<TypeAliasId> { - let trait_ = self - .resolver - .resolve_known_trait(self.db.upcast(), &path![core::future::IntoFuture]) - .or_else(|| self.resolve_lang_item(name![future_trait])?.as_trait())?; + let ItemContainerId::TraitId(trait_) = self + .resolve_lang_item(LangItem::IntoFutureIntoFuture)? + .as_function()? + .lookup(self.db.upcast()) + .container + else { return None }; self.db.trait_data(trait_).associated_type_by_name(&name![Output]) } fn resolve_boxed_box(&self) -> Option<AdtId> { - let struct_ = self.resolve_lang_item(name![owned_box])?.as_struct()?; + let struct_ = self.resolve_lang_item(LangItem::OwnedBox)?.as_struct()?; Some(struct_.into()) } fn resolve_range_full(&self) -> Option<AdtId> { - let path = path![core::ops::RangeFull]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::RangeFull)?.as_struct()?; Some(struct_.into()) } fn resolve_range(&self) -> Option<AdtId> { - let path = path![core::ops::Range]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::Range)?.as_struct()?; Some(struct_.into()) } fn resolve_range_inclusive(&self) -> Option<AdtId> { - let path = path![core::ops::RangeInclusive]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::RangeInclusiveStruct)?.as_struct()?; Some(struct_.into()) } fn resolve_range_from(&self) -> Option<AdtId> { - let path = path![core::ops::RangeFrom]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::RangeFrom)?.as_struct()?; Some(struct_.into()) } fn resolve_range_to(&self) -> Option<AdtId> { - let path = path![core::ops::RangeTo]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::RangeTo)?.as_struct()?; Some(struct_.into()) } fn resolve_range_to_inclusive(&self) -> Option<AdtId> { - let path = path![core::ops::RangeToInclusive]; - let struct_ = self.resolver.resolve_known_struct(self.db.upcast(), &path)?; + let struct_ = self.resolve_lang_item(LangItem::RangeToInclusive)?.as_struct()?; Some(struct_.into()) } fn resolve_ops_index(&self) -> Option<TraitId> { - self.resolve_lang_item(name![index])?.as_trait() + self.resolve_lang_item(LangItem::Index)?.as_trait() } fn resolve_ops_index_output(&self) -> Option<TypeAliasId> { @@ -1014,7 +1008,7 @@ impl<'a> InferenceContext<'a> { } fn resolve_va_list(&self) -> Option<AdtId> { - let struct_ = self.resolve_lang_item(name![va_list])?.as_struct()?; + let struct_ = self.resolve_lang_item(LangItem::VaList)?.as_struct()?; Some(struct_.into()) } } diff --git a/crates/hir-ty/src/infer/coerce.rs b/crates/hir-ty/src/infer/coerce.rs index 8df25c83c6..3293534a06 100644 --- a/crates/hir-ty/src/infer/coerce.rs +++ b/crates/hir-ty/src/infer/coerce.rs @@ -8,9 +8,11 @@ use std::{iter, sync::Arc}; use chalk_ir::{cast::Cast, BoundVar, Goal, Mutability, TyVariableKind}; -use hir_def::{expr::ExprId, lang_item::LangItemTarget}; +use hir_def::{ + expr::ExprId, + lang_item::{LangItem, LangItemTarget}, +}; use stdx::always; -use syntax::SmolStr; use crate::{ autoderef::{Autoderef, AutoderefKind}, @@ -570,11 +572,10 @@ impl<'a> InferenceTable<'a> { reborrow.as_ref().map_or_else(|| from_ty.clone(), |(_, adj)| adj.target.clone()); let krate = self.trait_env.krate; - let coerce_unsized_trait = - match self.db.lang_item(krate, SmolStr::new_inline("coerce_unsized")) { - Some(LangItemTarget::TraitId(trait_)) => trait_, - _ => return Err(TypeError), - }; + let coerce_unsized_trait = match self.db.lang_item(krate, LangItem::CoerceUnsized) { + Some(LangItemTarget::Trait(trait_)) => trait_, + _ => return Err(TypeError), + }; let coerce_unsized_tref = { let b = TyBuilder::trait_ref(self.db, coerce_unsized_trait); diff --git a/crates/hir-ty/src/infer/expr.rs b/crates/hir-ty/src/infer/expr.rs index 6f347f6757..7ae85d2061 100644 --- a/crates/hir-ty/src/infer/expr.rs +++ b/crates/hir-ty/src/infer/expr.rs @@ -29,7 +29,7 @@ use crate::{ const_or_path_to_chalk, generic_arg_to_chalk, lower_to_chalk_mutability, ParamLoweringMode, }, mapping::{from_chalk, ToChalk}, - method_resolution::{self, lang_names_for_bin_op, VisibleFromModule}, + method_resolution::{self, lang_items_for_bin_op, VisibleFromModule}, primitive::{self, UintTy}, static_lifetime, to_chalk_trait_id, utils::{generics, Generics}, @@ -1008,7 +1008,7 @@ impl<'a> InferenceContext<'a> { let lhs_ty = self.infer_expr(lhs, &lhs_expectation); let rhs_ty = self.table.new_type_var(); - let trait_func = lang_names_for_bin_op(op).and_then(|(name, lang_item)| { + let trait_func = lang_items_for_bin_op(op).and_then(|(name, lang_item)| { let trait_id = self.resolve_lang_item(lang_item)?.as_trait()?; let func = self.db.trait_data(trait_id).method_by_name(&name)?; Some((trait_id, func)) diff --git a/crates/hir-ty/src/lang_items.rs b/crates/hir-ty/src/lang_items.rs index afc54e729f..5308c72161 100644 --- a/crates/hir-ty/src/lang_items.rs +++ b/crates/hir-ty/src/lang_items.rs @@ -1,20 +1,19 @@ //! Functions to detect special lang items -use hir_def::{AdtId, HasModule}; -use hir_expand::name; +use hir_def::{lang_item::LangItem, AdtId, HasModule}; use crate::db::HirDatabase; pub fn is_box(adt: AdtId, db: &dyn HirDatabase) -> bool { - let owned_box = name![owned_box].to_smol_str(); let krate = adt.module(db.upcast()).krate(); - let box_adt = db.lang_item(krate, owned_box).and_then(|it| it.as_struct()).map(AdtId::from); + let box_adt = + db.lang_item(krate, LangItem::OwnedBox).and_then(|it| it.as_struct()).map(AdtId::from); Some(adt) == box_adt } pub fn is_unsafe_cell(adt: AdtId, db: &dyn HirDatabase) -> bool { - let owned_box = name![unsafe_cell].to_smol_str(); let krate = adt.module(db.upcast()).krate(); - let box_adt = db.lang_item(krate, owned_box).and_then(|it| it.as_struct()).map(AdtId::from); + let box_adt = + db.lang_item(krate, LangItem::UnsafeCell).and_then(|it| it.as_struct()).map(AdtId::from); Some(adt) == box_adt } diff --git a/crates/hir-ty/src/lower.rs b/crates/hir-ty/src/lower.rs index 24973afb9c..b1a7ad3e94 100644 --- a/crates/hir-ty/src/lower.rs +++ b/crates/hir-ty/src/lower.rs @@ -23,7 +23,7 @@ use hir_def::{ generics::{ TypeOrConstParamData, TypeParamProvenance, WherePredicate, WherePredicateTypeTarget, }, - lang_item::lang_attr, + lang_item::{lang_attr, LangItem}, path::{GenericArg, ModPath, Path, PathKind, PathSegment, PathSegments}, resolver::{HasResolver, Resolver, TypeNs}, type_ref::{ @@ -40,7 +40,7 @@ use la_arena::ArenaMap; use rustc_hash::FxHashSet; use smallvec::SmallVec; use stdx::{impl_from, never}; -use syntax::{ast, SmolStr}; +use syntax::ast; use crate::{ all_super_traits, @@ -954,7 +954,7 @@ impl<'a> TyLoweringContext<'a> { TypeBound::Path(path, TraitBoundModifier::Maybe) => { let sized_trait = self .db - .lang_item(self.resolver.krate(), SmolStr::new_inline("sized")) + .lang_item(self.resolver.krate(), LangItem::Sized) .and_then(|lang_item| lang_item.as_trait()); // Don't lower associated type bindings as the only possible relaxed trait bound // `?Sized` has no of them. @@ -1150,7 +1150,7 @@ impl<'a> TyLoweringContext<'a> { let krate = func.lookup(ctx.db.upcast()).module(ctx.db.upcast()).krate(); let sized_trait = ctx .db - .lang_item(krate, SmolStr::new_inline("sized")) + .lang_item(krate, LangItem::Sized) .and_then(|lang_item| lang_item.as_trait().map(to_chalk_trait_id)); let sized_clause = sized_trait.map(|trait_id| { let clause = WhereClause::Implemented(TraitRef { @@ -1489,7 +1489,7 @@ fn implicitly_sized_clauses<'a>( let is_trait_def = matches!(def, GenericDefId::TraitId(..)); let generic_args = &substitution.as_slice(Interner)[is_trait_def as usize..]; let sized_trait = db - .lang_item(resolver.krate(), SmolStr::new_inline("sized")) + .lang_item(resolver.krate(), LangItem::Sized) .and_then(|lang_item| lang_item.as_trait().map(to_chalk_trait_id)); sized_trait.into_iter().flat_map(move |sized_trait| { diff --git a/crates/hir-ty/src/method_resolution.rs b/crates/hir-ty/src/method_resolution.rs index 64376e10bc..858de00059 100644 --- a/crates/hir-ty/src/method_resolution.rs +++ b/crates/hir-ty/src/method_resolution.rs @@ -7,8 +7,9 @@ use std::{ops::ControlFlow, sync::Arc}; use base_db::{CrateId, Edition}; use chalk_ir::{cast::Cast, Mutability, UniverseIndex}; use hir_def::{ - data::ImplData, item_scope::ItemScope, nameres::DefMap, AssocItemId, BlockId, ConstId, - FunctionId, HasModule, ImplId, ItemContainerId, Lookup, ModuleDefId, ModuleId, TraitId, + data::ImplData, item_scope::ItemScope, lang_item::LangItem, nameres::DefMap, AssocItemId, + BlockId, ConstId, FunctionId, HasModule, ImplId, ItemContainerId, Lookup, ModuleDefId, + ModuleId, TraitId, }; use hir_expand::name::Name; use rustc_hash::{FxHashMap, FxHashSet}; @@ -437,49 +438,49 @@ pub fn def_crates( } } -pub fn lang_names_for_bin_op(op: syntax::ast::BinaryOp) -> Option<(Name, Name)> { +pub fn lang_items_for_bin_op(op: syntax::ast::BinaryOp) -> Option<(Name, LangItem)> { use hir_expand::name; use syntax::ast::{ArithOp, BinaryOp, CmpOp, Ordering}; Some(match op { BinaryOp::LogicOp(_) => return None, BinaryOp::ArithOp(aop) => match aop { - ArithOp::Add => (name!(add), name!(add)), - ArithOp::Mul => (name!(mul), name!(mul)), - ArithOp::Sub => (name!(sub), name!(sub)), - ArithOp::Div => (name!(div), name!(div)), - ArithOp::Rem => (name!(rem), name!(rem)), - ArithOp::Shl => (name!(shl), name!(shl)), - ArithOp::Shr => (name!(shr), name!(shr)), - ArithOp::BitXor => (name!(bitxor), name!(bitxor)), - ArithOp::BitOr => (name!(bitor), name!(bitor)), - ArithOp::BitAnd => (name!(bitand), name!(bitand)), + ArithOp::Add => (name![add], LangItem::Add), + ArithOp::Mul => (name![mul], LangItem::Mul), + ArithOp::Sub => (name![sub], LangItem::Sub), + ArithOp::Div => (name![div], LangItem::Div), + ArithOp::Rem => (name![rem], LangItem::Rem), + ArithOp::Shl => (name![shl], LangItem::Shl), + ArithOp::Shr => (name![shr], LangItem::Shr), + ArithOp::BitXor => (name![bitxor], LangItem::BitXor), + ArithOp::BitOr => (name![bitor], LangItem::BitOr), + ArithOp::BitAnd => (name![bitand], LangItem::BitAnd), }, BinaryOp::Assignment { op: Some(aop) } => match aop { - ArithOp::Add => (name!(add_assign), name!(add_assign)), - ArithOp::Mul => (name!(mul_assign), name!(mul_assign)), - ArithOp::Sub => (name!(sub_assign), name!(sub_assign)), - ArithOp::Div => (name!(div_assign), name!(div_assign)), - ArithOp::Rem => (name!(rem_assign), name!(rem_assign)), - ArithOp::Shl => (name!(shl_assign), name!(shl_assign)), - ArithOp::Shr => (name!(shr_assign), name!(shr_assign)), - ArithOp::BitXor => (name!(bitxor_assign), name!(bitxor_assign)), - ArithOp::BitOr => (name!(bitor_assign), name!(bitor_assign)), - ArithOp::BitAnd => (name!(bitand_assign), name!(bitand_assign)), + ArithOp::Add => (name![add_assign], LangItem::AddAssign), + ArithOp::Mul => (name![mul_assign], LangItem::MulAssign), + ArithOp::Sub => (name![sub_assign], LangItem::SubAssign), + ArithOp::Div => (name![div_assign], LangItem::DivAssign), + ArithOp::Rem => (name![rem_assign], LangItem::RemAssign), + ArithOp::Shl => (name![shl_assign], LangItem::ShlAssign), + ArithOp::Shr => (name![shr_assign], LangItem::ShrAssign), + ArithOp::BitXor => (name![bitxor_assign], LangItem::BitXorAssign), + ArithOp::BitOr => (name![bitor_assign], LangItem::BitOrAssign), + ArithOp::BitAnd => (name![bitand_assign], LangItem::BitAndAssign), }, BinaryOp::CmpOp(cop) => match cop { - CmpOp::Eq { negated: false } => (name!(eq), name!(eq)), - CmpOp::Eq { negated: true } => (name!(ne), name!(eq)), + CmpOp::Eq { negated: false } => (name![eq], LangItem::PartialEq), + CmpOp::Eq { negated: true } => (name![ne], LangItem::PartialEq), CmpOp::Ord { ordering: Ordering::Less, strict: false } => { - (name!(le), name!(partial_ord)) + (name![le], LangItem::PartialOrd) } CmpOp::Ord { ordering: Ordering::Less, strict: true } => { - (name!(lt), name!(partial_ord)) + (name![lt], LangItem::PartialOrd) } CmpOp::Ord { ordering: Ordering::Greater, strict: false } => { - (name!(ge), name!(partial_ord)) + (name![ge], LangItem::PartialOrd) } CmpOp::Ord { ordering: Ordering::Greater, strict: true } => { - (name!(gt), name!(partial_ord)) + (name![gt], LangItem::PartialOrd) } }, BinaryOp::Assignment { op: None } => return None, diff --git a/crates/hir-ty/src/tests/traits.rs b/crates/hir-ty/src/tests/traits.rs index 4c560702a1..88670364bd 100644 --- a/crates/hir-ty/src/tests/traits.rs +++ b/crates/hir-ty/src/tests/traits.rs @@ -163,98 +163,22 @@ fn test() { } #[test] -fn infer_try() { +fn infer_try_trait() { check_types( r#" -//- /main.rs crate:main deps:core +//- minicore: try, result fn test() { let r: Result<i32, u64> = Result::Ok(1); let v = r?; v; } //^ i32 -//- /core.rs crate:core -pub mod ops { - pub trait Try { - type Ok; - type Error; - } +impl<O, E> core::ops::Try for Result<O, E> { + type Output = O; + type Error = Result<core::convert::Infallible, E>; } -pub mod result { - pub enum Result<O, E> { - Ok(O), - Err(E) - } - - impl<O, E> crate::ops::Try for Result<O, E> { - type Ok = O; - type Error = E; - } -} - -pub mod prelude { - pub mod rust_2018 { - pub use crate::{result::*, ops::*}; - } -} -"#, - ); -} - -#[test] -fn infer_try_trait_v2() { - check_types( - r#" -//- /main.rs crate:main deps:core -fn test() { - let r: Result<i32, u64> = Result::Ok(1); - let v = r?; - v; -} //^ i32 - -//- /core.rs crate:core -mod ops { - mod try_trait { - pub trait Try: FromResidual { - type Output; - type Residual; - } - pub trait FromResidual<R = <Self as Try>::Residual> {} - } - - pub use self::try_trait::FromResidual; - pub use self::try_trait::Try; -} - -mod convert { - pub trait From<T> {} - impl<T> From<T> for T {} -} - -pub mod result { - use crate::convert::From; - use crate::ops::{Try, FromResidual}; - - pub enum Infallible {} - pub enum Result<O, E> { - Ok(O), - Err(E) - } - - impl<O, E> Try for Result<O, E> { - type Output = O; - type Error = Result<Infallible, E>; - } - - impl<T, E, F: From<E>> FromResidual<Result<Infallible, E>> for Result<T, F> {} -} - -pub mod prelude { - pub mod rust_2018 { - pub use crate::result::*; - } -} +impl<T, E, F: From<E>> core::ops::FromResidual<Result<core::convert::Infallible, E>> for Result<T, F> {} "#, ); } @@ -263,7 +187,8 @@ pub mod prelude { fn infer_for_loop() { check_types( r#" -//- /main.rs crate:main deps:core,alloc +//- minicore: iterator +//- /main.rs crate:main deps:alloc #![no_std] use alloc::collections::Vec; @@ -275,23 +200,7 @@ fn test() { } //^ &str } -//- /core.rs crate:core -pub mod iter { - pub trait IntoIterator { - type Item; - type IntoIter: Iterator<Item = Self::Item>; - } - pub trait Iterator { - type Item; - } -} -pub mod prelude { - pub mod rust_2018 { - pub use crate::iter::*; - } -} - -//- /alloc.rs crate:alloc deps:core +//- /alloc.rs crate:alloc #![no_std] pub mod collections { pub struct Vec<T> {} @@ -2999,40 +2908,17 @@ fn test() { fn integer_range_iterate() { check_types( r#" -//- /main.rs crate:main deps:core +//- minicore: range, iterator +//- /main.rs crate:main fn test() { for x in 0..100 { x; } } //^ i32 -//- /core.rs crate:core -pub mod ops { - pub struct Range<Idx> { - pub start: Idx, - pub end: Idx, - } -} - -pub mod iter { - pub trait Iterator { - type Item; - } - - pub trait IntoIterator { - type Item; - type IntoIter: Iterator<Item = Self::Item>; - } - - impl<T> IntoIterator for T where T: Iterator { - type Item = <T as Iterator>::Item; - type IntoIter = Self; - } -} - trait Step {} impl Step for i32 {} impl Step for i64 {} -impl<A: Step> iter::Iterator for ops::Range<A> { +impl<A: Step> core::iter::Iterator for core::ops::Range<A> { type Item = A; } "#, diff --git a/crates/hir-ty/src/traits.rs b/crates/hir-ty/src/traits.rs index 778a6b8204..3ab85c68f5 100644 --- a/crates/hir-ty/src/traits.rs +++ b/crates/hir-ty/src/traits.rs @@ -7,9 +7,11 @@ use chalk_recursive::Cache; use chalk_solve::{logging_db::LoggingRustIrDatabase, Solver}; use base_db::CrateId; -use hir_def::{lang_item::LangItemTarget, TraitId}; +use hir_def::{ + lang_item::{LangItem, LangItemTarget}, + TraitId, +}; use stdx::panic_context; -use syntax::SmolStr; use crate::{ db::HirDatabase, infer::unify::InferenceTable, AliasEq, AliasTy, Canonical, DomainGoal, Goal, @@ -177,18 +179,18 @@ pub enum FnTrait { } impl FnTrait { - const fn lang_item_name(self) -> &'static str { + const fn lang_item(self) -> LangItem { match self { - FnTrait::FnOnce => "fn_once", - FnTrait::FnMut => "fn_mut", - FnTrait::Fn => "fn", + FnTrait::FnOnce => LangItem::FnOnce, + FnTrait::FnMut => LangItem::FnMut, + FnTrait::Fn => LangItem::Fn, } } pub fn get_id(&self, db: &dyn HirDatabase, krate: CrateId) -> Option<TraitId> { - let target = db.lang_item(krate, SmolStr::new_inline(self.lang_item_name()))?; + let target = db.lang_item(krate, self.lang_item())?; match target { - LangItemTarget::TraitId(t) => Some(t), + LangItemTarget::Trait(t) => Some(t), _ => None, } } diff --git a/crates/hir-ty/src/utils.rs b/crates/hir-ty/src/utils.rs index 4f516e18be..396cba89b6 100644 --- a/crates/hir-ty/src/utils.rs +++ b/crates/hir-ty/src/utils.rs @@ -11,6 +11,7 @@ use hir_def::{ GenericParams, TypeOrConstParamData, TypeParamProvenance, WherePredicate, WherePredicateTypeTarget, }, + lang_item::LangItem, resolver::{HasResolver, TypeNs}, type_ref::{TraitBoundModifier, TypeRef}, ConstParamId, FunctionId, GenericDefId, ItemContainerId, Lookup, TraitId, TypeAliasId, @@ -21,7 +22,6 @@ use intern::Interned; use itertools::Either; use rustc_hash::FxHashSet; use smallvec::{smallvec, SmallVec}; -use syntax::SmolStr; use crate::{ db::HirDatabase, ChalkTraitId, Interner, Substitution, TraitRef, TraitRefExt, WhereClause, @@ -29,9 +29,9 @@ use crate::{ pub(crate) fn fn_traits(db: &dyn DefDatabase, krate: CrateId) -> impl Iterator<Item = TraitId> { [ - db.lang_item(krate, SmolStr::new_inline("fn")), - db.lang_item(krate, SmolStr::new_inline("fn_mut")), - db.lang_item(krate, SmolStr::new_inline("fn_once")), + db.lang_item(krate, LangItem::Fn), + db.lang_item(krate, LangItem::FnMut), + db.lang_item(krate, LangItem::FnOnce), ] .into_iter() .flatten() diff --git a/crates/hir/src/display.rs b/crates/hir/src/display.rs index 55d3b60976..0d19420127 100644 --- a/crates/hir/src/display.rs +++ b/crates/hir/src/display.rs @@ -4,6 +4,7 @@ use hir_def::{ generics::{ TypeOrConstParamData, TypeParamProvenance, WherePredicate, WherePredicateTypeTarget, }, + lang_item::LangItem, type_ref::{TypeBound, TypeRef}, AdtId, GenericDefId, }; @@ -14,7 +15,6 @@ use hir_ty::{ }, Interner, TraitRefExt, WhereClause, }; -use syntax::SmolStr; use crate::{ Adt, Const, ConstParam, Enum, Field, Function, GenericParam, HasCrate, HasVisibility, @@ -261,8 +261,7 @@ impl HirDisplay for TypeParam { bounds.iter().cloned().map(|b| b.substitute(Interner, &substs)).collect(); let krate = self.id.parent().krate(f.db).id; let sized_trait = - f.db.lang_item(krate, SmolStr::new_inline("sized")) - .and_then(|lang_item| lang_item.as_trait()); + f.db.lang_item(krate, LangItem::Sized).and_then(|lang_item| lang_item.as_trait()); let has_only_sized_bound = predicates.iter().all(move |pred| match pred.skip_binders() { WhereClause::Implemented(it) => Some(it.hir_trait_id()) == sized_trait, _ => false, diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs index 012812cea2..6ec39dfd73 100644 --- a/crates/hir/src/lib.rs +++ b/crates/hir/src/lib.rs @@ -44,7 +44,7 @@ use hir_def::{ expr::{BindingAnnotation, ExprOrPatId, LabelId, Pat, PatId}, generics::{TypeOrConstParamData, TypeParamProvenance}, item_tree::ItemTreeNode, - lang_item::LangItemTarget, + lang_item::{LangItem, LangItemTarget}, layout::{Layout, LayoutError, ReprOptions}, nameres::{self, diagnostics::DefDiagnostic}, per_ns::PerNs, @@ -1836,7 +1836,7 @@ pub struct Trait { impl Trait { pub fn lang(db: &dyn HirDatabase, krate: Crate, name: &Name) -> Option<Trait> { - db.lang_item(krate.into(), name.to_smol_str()) + db.lang_item(krate.into(), LangItem::from_name(name)?) .and_then(LangItemTarget::as_trait) .map(Into::into) } @@ -3009,7 +3009,7 @@ impl Type { /// This function is used in `.await` syntax completion. pub fn impls_into_future(&self, db: &dyn HirDatabase) -> bool { let trait_ = db - .lang_item(self.env.krate, SmolStr::new_inline("into_future")) + .lang_item(self.env.krate, LangItem::IntoFutureIntoFuture) .and_then(|it| { let into_future_fn = it.as_function()?; let assoc_item = as_assoc_item(db, AssocItem::Function, into_future_fn)?; @@ -3017,8 +3017,7 @@ impl Type { Some(into_future_trait.id) }) .or_else(|| { - let future_trait = - db.lang_item(self.env.krate, SmolStr::new_inline("future_trait"))?; + let future_trait = db.lang_item(self.env.krate, LangItem::Future)?; future_trait.as_trait() }); @@ -3111,9 +3110,9 @@ impl Type { } pub fn is_copy(&self, db: &dyn HirDatabase) -> bool { - let lang_item = db.lang_item(self.env.krate, SmolStr::new_inline("copy")); + let lang_item = db.lang_item(self.env.krate, LangItem::Copy); let copy_trait = match lang_item { - Some(LangItemTarget::TraitId(it)) => it, + Some(LangItemTarget::Trait(it)) => it, _ => return false, }; self.impls_trait(db, copy_trait.into(), &[]) diff --git a/crates/hir/src/source_analyzer.rs b/crates/hir/src/source_analyzer.rs index 2354eb2c9c..5e0c9933a7 100644 --- a/crates/hir/src/source_analyzer.rs +++ b/crates/hir/src/source_analyzer.rs @@ -17,6 +17,7 @@ use hir_def::{ Body, BodySourceMap, }, expr::{ExprId, Pat, PatId}, + lang_item::LangItem, macro_id_to_def_id, path::{ModPath, Path, PathKind}, resolver::{resolver_for_scope, Resolver, TypeNs, ValueNs}, @@ -37,7 +38,7 @@ use hir_ty::{ record_literal_missing_fields, record_pattern_missing_fields, unsafe_expressions, UnsafeExpr, }, - method_resolution::{self, lang_names_for_bin_op}, + method_resolution::{self, lang_items_for_bin_op}, Adjustment, InferenceResult, Interner, Substitution, Ty, TyExt, TyKind, TyLoweringContext, }; use itertools::Itertools; @@ -294,12 +295,8 @@ impl SourceAnalyzer { } } - let future_trait = db - .lang_item(self.resolver.krate(), hir_expand::name![future_trait].to_smol_str())? - .as_trait()?; - let poll_fn = db - .lang_item(self.resolver.krate(), hir_expand::name![poll].to_smol_str())? - .as_function()?; + let future_trait = db.lang_item(self.resolver.krate(), LangItem::Future)?.as_trait()?; + let poll_fn = db.lang_item(self.resolver.krate(), LangItem::FuturePoll)?.as_function()?; // HACK: subst for `poll()` coincides with that for `Future` because `poll()` itself // doesn't have any generic parameters, so we skip building another subst for `poll()`. let substs = hir_ty::TyBuilder::subst_for_def(db, future_trait, None).push(ty).build(); @@ -311,14 +308,14 @@ impl SourceAnalyzer { db: &dyn HirDatabase, prefix_expr: &ast::PrefixExpr, ) -> Option<FunctionId> { - let lang_item_name = match prefix_expr.op_kind()? { - ast::UnaryOp::Deref => name![deref], - ast::UnaryOp::Not => name![not], - ast::UnaryOp::Neg => name![neg], + let (lang_item, fn_name) = match prefix_expr.op_kind()? { + ast::UnaryOp::Deref => (LangItem::Deref, name![deref]), + ast::UnaryOp::Not => (LangItem::Not, name![not]), + ast::UnaryOp::Neg => (LangItem::Neg, name![neg]), }; let ty = self.ty_of_expr(db, &prefix_expr.expr()?)?; - let (op_trait, op_fn) = self.lang_trait_fn(db, &lang_item_name, &lang_item_name)?; + let (op_trait, op_fn) = self.lang_trait_fn(db, lang_item, &fn_name)?; // HACK: subst for all methods coincides with that for their trait because the methods // don't have any generic parameters, so we skip building another subst for the methods. let substs = hir_ty::TyBuilder::subst_for_def(db, op_trait, None).push(ty.clone()).build(); @@ -334,9 +331,7 @@ impl SourceAnalyzer { let base_ty = self.ty_of_expr(db, &index_expr.base()?)?; let index_ty = self.ty_of_expr(db, &index_expr.index()?)?; - let lang_item_name = name![index]; - - let (op_trait, op_fn) = self.lang_trait_fn(db, &lang_item_name, &lang_item_name)?; + let (op_trait, op_fn) = self.lang_trait_fn(db, LangItem::Index, &name![index])?; // HACK: subst for all methods coincides with that for their trait because the methods // don't have any generic parameters, so we skip building another subst for the methods. let substs = hir_ty::TyBuilder::subst_for_def(db, op_trait, None) @@ -355,8 +350,8 @@ impl SourceAnalyzer { let lhs = self.ty_of_expr(db, &binop_expr.lhs()?)?; let rhs = self.ty_of_expr(db, &binop_expr.rhs()?)?; - let (op_trait, op_fn) = lang_names_for_bin_op(op) - .and_then(|(name, lang_item)| self.lang_trait_fn(db, &lang_item, &name))?; + let (op_trait, op_fn) = lang_items_for_bin_op(op) + .and_then(|(name, lang_item)| self.lang_trait_fn(db, lang_item, &name))?; // HACK: subst for `index()` coincides with that for `Index` because `index()` itself // doesn't have any generic parameters, so we skip building another subst for `index()`. let substs = hir_ty::TyBuilder::subst_for_def(db, op_trait, None) @@ -374,8 +369,7 @@ impl SourceAnalyzer { ) -> Option<FunctionId> { let ty = self.ty_of_expr(db, &try_expr.expr()?)?; - let op_fn = - db.lang_item(self.resolver.krate(), name![branch].to_smol_str())?.as_function()?; + let op_fn = db.lang_item(self.resolver.krate(), LangItem::TryTraitBranch)?.as_function()?; let op_trait = match op_fn.lookup(db.upcast()).container { ItemContainerId::TraitId(id) => id, _ => return None, @@ -821,10 +815,10 @@ impl SourceAnalyzer { fn lang_trait_fn( &self, db: &dyn HirDatabase, - lang_trait: &Name, + lang_trait: LangItem, method_name: &Name, ) -> Option<(TraitId, FunctionId)> { - let trait_id = db.lang_item(self.resolver.krate(), lang_trait.to_smol_str())?.as_trait()?; + let trait_id = db.lang_item(self.resolver.krate(), lang_trait)?.as_trait()?; let fn_id = db.trait_data(trait_id).method_by_name(method_name)?; Some((trait_id, fn_id)) } diff --git a/crates/ide-completion/src/tests/flyimport.rs b/crates/ide-completion/src/tests/flyimport.rs index a63ef00687..0b485eb776 100644 --- a/crates/ide-completion/src/tests/flyimport.rs +++ b/crates/ide-completion/src/tests/flyimport.rs @@ -541,9 +541,9 @@ fn main() { } "#, expect![[r#" - fn weird_function() (use dep::test_mod::TestTrait) fn() DEPRECATED - ct SPECIAL_CONST (use dep::test_mod::TestTrait) DEPRECATED - "#]], + ct SPECIAL_CONST (use dep::test_mod::TestTrait) DEPRECATED + fn weird_function() (use dep::test_mod::TestTrait) fn() DEPRECATED + "#]], ); } diff --git a/crates/project-model/src/sysroot.rs b/crates/project-model/src/sysroot.rs index 8d5ab0061e..046786580e 100644 --- a/crates/project-model/src/sysroot.rs +++ b/crates/project-model/src/sysroot.rs @@ -7,6 +7,7 @@ use std::{env, fs, iter, ops, path::PathBuf, process::Command}; use anyhow::{format_err, Result}; +use base_db::CrateName; use la_arena::{Arena, Idx}; use paths::{AbsPath, AbsPathBuf}; use rustc_hash::FxHashMap; @@ -50,14 +51,16 @@ impl Sysroot { &self.src_root } - pub fn public_deps(&self) -> impl Iterator<Item = (&'static str, SysrootCrate, bool)> + '_ { + pub fn public_deps(&self) -> impl Iterator<Item = (CrateName, SysrootCrate, bool)> + '_ { // core is added as a dependency before std in order to // mimic rustcs dependency order ["core", "alloc", "std"] .into_iter() .zip(iter::repeat(true)) .chain(iter::once(("test", false))) - .filter_map(move |(name, prelude)| Some((name, self.by_name(name)?, prelude))) + .filter_map(move |(name, prelude)| { + Some((CrateName::new(name).unwrap(), self.by_name(name)?, prelude)) + }) } pub fn proc_macro(&self) -> Option<SysrootCrate> { diff --git a/crates/project-model/src/workspace.rs b/crates/project-model/src/workspace.rs index 9aa04eaa75..755bf95199 100644 --- a/crates/project-model/src/workspace.rs +++ b/crates/project-model/src/workspace.rs @@ -1162,9 +1162,7 @@ fn sysroot_to_crate_graph( let public_deps = SysrootPublicDeps { deps: sysroot .public_deps() - .map(|(name, idx, prelude)| { - (CrateName::new(name).unwrap(), sysroot_crates[&idx], prelude) - }) + .map(|(name, idx, prelude)| (name, sysroot_crates[&idx], prelude)) .collect::<Vec<_>>(), }; diff --git a/crates/test-utils/src/minicore.rs b/crates/test-utils/src/minicore.rs index 3ca63fcab9..dff6091440 100644 --- a/crates/test-utils/src/minicore.rs +++ b/crates/test-utils/src/minicore.rs @@ -28,6 +28,7 @@ //! generator: pin //! hash: //! index: sized +//! infallible: //! iterator: option //! iterators: iterator, fn //! non_zero: @@ -40,7 +41,7 @@ //! sized: //! slice: //! sync: sized -//! try: +//! try: infallible //! unsize: sized pub mod marker { @@ -172,6 +173,9 @@ pub mod convert { fn as_ref(&self) -> &T; } // endregion:as_ref + // region:infallible + pub enum Infallibe {} + // endregion:infallible } pub mod ops { @@ -352,7 +356,7 @@ pub mod ops { #[lang = "from_residual"] fn from_residual(residual: R) -> Self; } - #[lang = "try"] + #[lang = "Try"] pub trait Try: FromResidual<Self::Residual> { type Output; type Residual; |