Unnamed repository; edit this file 'description' to name the repository.
39 files changed, 340 insertions, 260 deletions
diff --git a/Cargo.lock b/Cargo.lock index 57d43dad3f..ce71a89897 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -1046,6 +1046,7 @@ checksum = "75761162ae2b0e580d7e7c390558127e5f01b4194debd6221fd8c207fc80e3f5" name = "mbe" version = "0.0.0" dependencies = [ + "arrayvec", "cov-mark", "parser", "rustc-hash", diff --git a/crates/hir-def/src/data.rs b/crates/hir-def/src/data.rs index 4338163672..8cf1e15f31 100644 --- a/crates/hir-def/src/data.rs +++ b/crates/hir-def/src/data.rs @@ -323,7 +323,7 @@ impl TraitAliasData { pub struct ImplData { pub target_trait: Option<Interned<TraitRef>>, pub self_ty: Interned<TypeRef>, - pub items: Vec<AssocItemId>, + pub items: Box<[AssocItemId]>, pub is_negative: bool, pub is_unsafe: bool, // box it as the vec is usually empty anyways diff --git a/crates/hir-def/src/db.rs b/crates/hir-def/src/db.rs index 61fed71218..0eb9e7d30b 100644 --- a/crates/hir-def/src/db.rs +++ b/crates/hir-def/src/db.rs @@ -80,9 +80,11 @@ pub trait InternDatabase: SourceDatabase { #[salsa::query_group(DefDatabaseStorage)] pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDatabase> { + /// Whether to expand procedural macros during name resolution. #[salsa::input] fn expand_proc_attr_macros(&self) -> bool; + /// Computes an [`ItemTree`] for the given file or macro expansion. #[salsa::invoke(ItemTree::file_item_tree_query)] fn file_item_tree(&self, file_id: HirFileId) -> Arc<ItemTree>; @@ -96,6 +98,7 @@ pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDataba #[salsa::invoke(DefMap::block_def_map_query)] fn block_def_map(&self, block: BlockId) -> Arc<DefMap>; + /// Turns a MacroId into a MacroDefId, describing the macro's definition post name resolution. fn macro_def(&self, m: MacroId) -> MacroDefId; // region:data @@ -190,6 +193,7 @@ pub trait DefDatabase: InternDatabase + ExpandDatabase + Upcast<dyn ExpandDataba #[salsa::invoke(Attrs::fields_attrs_query)] fn fields_attrs(&self, def: VariantId) -> Arc<ArenaMap<LocalFieldId, Attrs>>; + // should this really be a query? #[salsa::invoke(crate::attr::fields_attrs_source_map)] fn fields_attrs_source_map( &self, diff --git a/crates/hir-def/src/generics.rs b/crates/hir-def/src/generics.rs index b9f8082391..ca02501567 100644 --- a/crates/hir-def/src/generics.rs +++ b/crates/hir-def/src/generics.rs @@ -582,13 +582,11 @@ impl GenericParams { GenericDefId::TraitAliasId(id) => id_to_generics(db, id, enabled_params), GenericDefId::TypeAliasId(id) => id_to_generics(db, id, enabled_params), GenericDefId::ImplId(id) => id_to_generics(db, id, enabled_params), - GenericDefId::EnumVariantId(_) | GenericDefId::ConstId(_) => { - Interned::new(GenericParams { - type_or_consts: Default::default(), - lifetimes: Default::default(), - where_predicates: Default::default(), - }) - } + GenericDefId::ConstId(_) => Interned::new(GenericParams { + type_or_consts: Default::default(), + lifetimes: Default::default(), + where_predicates: Default::default(), + }), } } diff --git a/crates/hir-def/src/item_tree.rs b/crates/hir-def/src/item_tree.rs index c3b7a78301..7650dfe9f3 100644 --- a/crates/hir-def/src/item_tree.rs +++ b/crates/hir-def/src/item_tree.rs @@ -48,6 +48,7 @@ use either::Either; use hir_expand::{attrs::RawAttrs, name::Name, ExpandTo, HirFileId, InFile}; use intern::Interned; use la_arena::{Arena, Idx, IdxRange, RawIdx}; +use once_cell::sync::OnceCell; use rustc_hash::FxHashMap; use smallvec::SmallVec; use span::{AstIdNode, FileAstId, SyntaxContextId}; @@ -100,6 +101,7 @@ pub struct ItemTree { impl ItemTree { pub(crate) fn file_item_tree_query(db: &dyn DefDatabase, file_id: HirFileId) -> Arc<ItemTree> { let _p = tracing::info_span!("file_item_tree_query", ?file_id).entered(); + static EMPTY: OnceCell<Arc<ItemTree>> = OnceCell::new(); let syntax = db.parse_or_expand(file_id); @@ -131,18 +133,47 @@ impl ItemTree { if let Some(attrs) = top_attrs { item_tree.attrs.insert(AttrOwner::TopLevel, attrs); } - item_tree.shrink_to_fit(); - Arc::new(item_tree) + if item_tree.data.is_none() && item_tree.top_level.is_empty() && item_tree.attrs.is_empty() + { + EMPTY + .get_or_init(|| { + Arc::new(ItemTree { + top_level: SmallVec::new_const(), + attrs: FxHashMap::default(), + data: None, + }) + }) + .clone() + } else { + item_tree.shrink_to_fit(); + Arc::new(item_tree) + } } pub(crate) fn block_item_tree_query(db: &dyn DefDatabase, block: BlockId) -> Arc<ItemTree> { + let _p = tracing::info_span!("block_item_tree_query", ?block).entered(); + static EMPTY: OnceCell<Arc<ItemTree>> = OnceCell::new(); + let loc = block.lookup(db); let block = loc.ast_id.to_node(db.upcast()); let ctx = lower::Ctx::new(db, loc.ast_id.file_id); let mut item_tree = ctx.lower_block(&block); - item_tree.shrink_to_fit(); - Arc::new(item_tree) + if item_tree.data.is_none() && item_tree.top_level.is_empty() && item_tree.attrs.is_empty() + { + EMPTY + .get_or_init(|| { + Arc::new(ItemTree { + top_level: SmallVec::new_const(), + attrs: FxHashMap::default(), + data: None, + }) + }) + .clone() + } else { + item_tree.shrink_to_fit(); + Arc::new(item_tree) + } } /// Returns an iterator over all items located at the top level of the `HirFileId` this @@ -585,24 +616,30 @@ impl Index<RawVisibilityId> for ItemTree { type Output = RawVisibility; fn index(&self, index: RawVisibilityId) -> &Self::Output { static VIS_PUB: RawVisibility = RawVisibility::Public; - static VIS_PRIV_IMPLICIT: RawVisibility = RawVisibility::Module( - ModPath::from_kind(PathKind::SELF), - VisibilityExplicitness::Implicit, - ); - static VIS_PRIV_EXPLICIT: RawVisibility = RawVisibility::Module( - ModPath::from_kind(PathKind::SELF), - VisibilityExplicitness::Explicit, - ); - static VIS_PUB_CRATE: RawVisibility = RawVisibility::Module( - ModPath::from_kind(PathKind::Crate), - VisibilityExplicitness::Explicit, - ); + static VIS_PRIV_IMPLICIT: OnceCell<RawVisibility> = OnceCell::new(); + static VIS_PRIV_EXPLICIT: OnceCell<RawVisibility> = OnceCell::new(); + static VIS_PUB_CRATE: OnceCell<RawVisibility> = OnceCell::new(); match index { - RawVisibilityId::PRIV_IMPLICIT => &VIS_PRIV_IMPLICIT, - RawVisibilityId::PRIV_EXPLICIT => &VIS_PRIV_EXPLICIT, + RawVisibilityId::PRIV_IMPLICIT => VIS_PRIV_IMPLICIT.get_or_init(|| { + RawVisibility::Module( + Interned::new(ModPath::from_kind(PathKind::SELF)), + VisibilityExplicitness::Implicit, + ) + }), + RawVisibilityId::PRIV_EXPLICIT => VIS_PRIV_EXPLICIT.get_or_init(|| { + RawVisibility::Module( + Interned::new(ModPath::from_kind(PathKind::SELF)), + VisibilityExplicitness::Explicit, + ) + }), RawVisibilityId::PUB => &VIS_PUB, - RawVisibilityId::PUB_CRATE => &VIS_PUB_CRATE, + RawVisibilityId::PUB_CRATE => VIS_PUB_CRATE.get_or_init(|| { + RawVisibility::Module( + Interned::new(ModPath::from_kind(PathKind::Crate)), + VisibilityExplicitness::Explicit, + ) + }), _ => &self.data().vis.arena[Idx::from_raw(index.0.into())], } } diff --git a/crates/hir-def/src/lib.rs b/crates/hir-def/src/lib.rs index f6fe0c618a..3fa98efbb5 100644 --- a/crates/hir-def/src/lib.rs +++ b/crates/hir-def/src/lib.rs @@ -689,7 +689,7 @@ pub enum TypeOwnerId { } impl TypeOwnerId { - fn as_generic_def_id(self) -> Option<GenericDefId> { + fn as_generic_def_id(self, db: &dyn DefDatabase) -> Option<GenericDefId> { Some(match self { TypeOwnerId::FunctionId(it) => GenericDefId::FunctionId(it), TypeOwnerId::ConstId(it) => GenericDefId::ConstId(it), @@ -698,7 +698,9 @@ impl TypeOwnerId { TypeOwnerId::TraitAliasId(it) => GenericDefId::TraitAliasId(it), TypeOwnerId::TypeAliasId(it) => GenericDefId::TypeAliasId(it), TypeOwnerId::ImplId(it) => GenericDefId::ImplId(it), - TypeOwnerId::EnumVariantId(it) => GenericDefId::EnumVariantId(it), + TypeOwnerId::EnumVariantId(it) => { + GenericDefId::AdtId(AdtId::EnumId(it.lookup(db).parent)) + } TypeOwnerId::InTypeConstId(_) | TypeOwnerId::StaticId(_) => return None, }) } @@ -740,7 +742,6 @@ impl From<GenericDefId> for TypeOwnerId { GenericDefId::TraitAliasId(it) => it.into(), GenericDefId::TypeAliasId(it) => it.into(), GenericDefId::ImplId(it) => it.into(), - GenericDefId::EnumVariantId(it) => it.into(), GenericDefId::ConstId(it) => it.into(), } } @@ -849,8 +850,8 @@ impl GeneralConstId { pub fn generic_def(self, db: &dyn DefDatabase) -> Option<GenericDefId> { match self { GeneralConstId::ConstId(it) => Some(it.into()), - GeneralConstId::ConstBlockId(it) => it.lookup(db).parent.as_generic_def_id(), - GeneralConstId::InTypeConstId(it) => it.lookup(db).owner.as_generic_def_id(), + GeneralConstId::ConstBlockId(it) => it.lookup(db).parent.as_generic_def_id(db), + GeneralConstId::InTypeConstId(it) => it.lookup(db).owner.as_generic_def_id(db), } } @@ -888,12 +889,12 @@ impl From<EnumVariantId> for DefWithBodyId { } impl DefWithBodyId { - pub fn as_generic_def_id(self) -> Option<GenericDefId> { + pub fn as_generic_def_id(self, db: &dyn DefDatabase) -> Option<GenericDefId> { match self { DefWithBodyId::FunctionId(f) => Some(f.into()), DefWithBodyId::StaticId(_) => None, DefWithBodyId::ConstId(c) => Some(c.into()), - DefWithBodyId::VariantId(c) => Some(c.into()), + DefWithBodyId::VariantId(c) => Some(c.lookup(db).parent.into()), // FIXME: stable rust doesn't allow generics in constants, but we should // use `TypeOwnerId::as_generic_def_id` when it does. DefWithBodyId::InTypeConstId(_) => None, @@ -921,10 +922,6 @@ pub enum GenericDefId { TraitAliasId(TraitAliasId), TypeAliasId(TypeAliasId), ImplId(ImplId), - // enum variants cannot have generics themselves, but their parent enums - // can, and this makes some code easier to write - // FIXME: Try to remove this as that will reduce the amount of query slots generated per enum? - EnumVariantId(EnumVariantId), // consts can have type parameters from their parents (i.e. associated consts of traits) ConstId(ConstId), } @@ -935,7 +932,6 @@ impl_from!( TraitAliasId, TypeAliasId, ImplId, - EnumVariantId, ConstId for GenericDefId ); @@ -967,7 +963,6 @@ impl GenericDefId { GenericDefId::TraitAliasId(it) => file_id_and_params_of_item_loc(db, it), GenericDefId::ImplId(it) => file_id_and_params_of_item_loc(db, it), GenericDefId::ConstId(it) => (it.lookup(db).id.file_id(), None), - GenericDefId::EnumVariantId(it) => (it.lookup(db).id.file_id(), None), } } @@ -982,6 +977,14 @@ impl GenericDefId { _ => None, } } + + pub fn from_callable(db: &dyn DefDatabase, def: CallableDefId) -> GenericDefId { + match def { + CallableDefId::FunctionId(f) => f.into(), + CallableDefId::StructId(s) => s.into(), + CallableDefId::EnumVariantId(e) => e.lookup(db).parent.into(), + } + } } impl From<AssocItemId> for GenericDefId { @@ -995,6 +998,36 @@ impl From<AssocItemId> for GenericDefId { } #[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] +pub enum CallableDefId { + FunctionId(FunctionId), + StructId(StructId), + EnumVariantId(EnumVariantId), +} + +impl InternValueTrivial for CallableDefId {} + +impl_from!(FunctionId, StructId, EnumVariantId for CallableDefId); +impl From<CallableDefId> for ModuleDefId { + fn from(def: CallableDefId) -> ModuleDefId { + match def { + CallableDefId::FunctionId(f) => ModuleDefId::FunctionId(f), + CallableDefId::StructId(s) => ModuleDefId::AdtId(AdtId::StructId(s)), + CallableDefId::EnumVariantId(e) => ModuleDefId::EnumVariantId(e), + } + } +} + +impl CallableDefId { + pub fn krate(self, db: &dyn DefDatabase) -> CrateId { + match self { + CallableDefId::FunctionId(f) => f.krate(db), + CallableDefId::StructId(s) => s.krate(db), + CallableDefId::EnumVariantId(e) => e.krate(db), + } + } +} + +#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] pub enum AttrDefId { ModuleId(ModuleId), FieldId(FieldId), @@ -1310,7 +1343,6 @@ impl HasModule for GenericDefId { GenericDefId::TraitAliasId(it) => it.module(db), GenericDefId::TypeAliasId(it) => it.module(db), GenericDefId::ImplId(it) => it.module(db), - GenericDefId::EnumVariantId(it) => it.module(db), GenericDefId::ConstId(it) => it.module(db), } } diff --git a/crates/hir-def/src/nameres.rs b/crates/hir-def/src/nameres.rs index 162b6429c3..8e7ef48112 100644 --- a/crates/hir-def/src/nameres.rs +++ b/crates/hir-def/src/nameres.rs @@ -103,12 +103,13 @@ const PREDEFINED_TOOLS: &[SmolStr] = &[ /// is computed by the `block_def_map` query. #[derive(Debug, PartialEq, Eq)] pub struct DefMap { + /// The crate this `DefMap` belongs to. + krate: CrateId, /// When this is a block def map, this will hold the block id of the block and module that /// contains this block. block: Option<BlockInfo>, /// The modules and their data declared in this crate. pub modules: Arena<ModuleData>, - krate: CrateId, /// The prelude module for this crate. This either comes from an import /// marked with the `prelude_import` attribute, or (in the normal case) from /// a dependency (`std` or `core`). @@ -124,6 +125,7 @@ pub struct DefMap { /// Tracks which custom derives are in scope for an item, to allow resolution of derive helper /// attributes. + // FIXME: Figure out a better way for the IDE layer to resolve these? derive_helpers_in_scope: FxHashMap<AstId<ast::Item>, Vec<(Name, MacroId, MacroCallId)>>, /// The diagnostics that need to be emitted for this crate. diff --git a/crates/hir-def/src/resolver.rs b/crates/hir-def/src/resolver.rs index 9794963203..a83157415c 100644 --- a/crates/hir-def/src/resolver.rs +++ b/crates/hir-def/src/resolver.rs @@ -1164,7 +1164,6 @@ impl HasResolver for GenericDefId { GenericDefId::TraitAliasId(inner) => inner.resolver(db), GenericDefId::TypeAliasId(inner) => inner.resolver(db), GenericDefId::ImplId(inner) => inner.resolver(db), - GenericDefId::EnumVariantId(inner) => inner.resolver(db), GenericDefId::ConstId(inner) => inner.resolver(db), } } diff --git a/crates/hir-def/src/visibility.rs b/crates/hir-def/src/visibility.rs index e08718fc83..11d91513f1 100644 --- a/crates/hir-def/src/visibility.rs +++ b/crates/hir-def/src/visibility.rs @@ -2,6 +2,7 @@ use std::iter; +use intern::Interned; use la_arena::ArenaMap; use span::SyntaxContextId; use syntax::ast; @@ -20,14 +21,17 @@ use crate::{ pub enum RawVisibility { /// `pub(in module)`, `pub(crate)` or `pub(super)`. Also private, which is /// equivalent to `pub(self)`. - Module(ModPath, VisibilityExplicitness), + Module(Interned<ModPath>, VisibilityExplicitness), /// `pub`. Public, } impl RawVisibility { - pub(crate) const fn private() -> RawVisibility { - RawVisibility::Module(ModPath::from_kind(PathKind::SELF), VisibilityExplicitness::Implicit) + pub(crate) fn private() -> RawVisibility { + RawVisibility::Module( + Interned::new(ModPath::from_kind(PathKind::SELF)), + VisibilityExplicitness::Implicit, + ) } pub(crate) fn from_ast( @@ -60,7 +64,7 @@ impl RawVisibility { ast::VisibilityKind::PubSelf => ModPath::from_kind(PathKind::SELF), ast::VisibilityKind::Pub => return RawVisibility::Public, }; - RawVisibility::Module(path, VisibilityExplicitness::Explicit) + RawVisibility::Module(Interned::new(path), VisibilityExplicitness::Explicit) } pub fn resolve( diff --git a/crates/hir-expand/src/change.rs b/crates/hir-expand/src/change.rs index 1a3dd0e7dd..08491db372 100644 --- a/crates/hir-expand/src/change.rs +++ b/crates/hir-expand/src/change.rs @@ -25,7 +25,8 @@ impl ChangeWithProcMacros { pub fn apply(self, db: &mut (impl ExpandDatabase + SourceDatabaseExt)) { self.source_change.apply(db); - if let Some(proc_macros) = self.proc_macros { + if let Some(mut proc_macros) = self.proc_macros { + proc_macros.shrink_to_fit(); db.set_proc_macros_with_durability(Arc::new(proc_macros), Durability::HIGH); } if let Some(target_data_layouts) = self.target_data_layouts { diff --git a/crates/hir-ty/src/builder.rs b/crates/hir-ty/src/builder.rs index 52411f94ad..bccdc9a6c5 100644 --- a/crates/hir-ty/src/builder.rs +++ b/crates/hir-ty/src/builder.rs @@ -252,8 +252,9 @@ impl TyBuilder<()> { /// This method prepopulates the builder with placeholder substitution of `parent`, so you /// should only push exactly 3 `GenericArg`s before building. pub fn subst_for_coroutine(db: &dyn HirDatabase, parent: DefWithBodyId) -> TyBuilder<()> { - let parent_subst = - parent.as_generic_def_id().map(|p| generics(db.upcast(), p).placeholder_subst(db)); + let parent_subst = parent + .as_generic_def_id(db.upcast()) + .map(|p| generics(db.upcast(), p).placeholder_subst(db)); // These represent resume type, yield type, and return type of coroutine. let params = std::iter::repeat(ParamKind::Type).take(3).collect(); TyBuilder::new((), params, parent_subst) @@ -266,7 +267,7 @@ impl TyBuilder<()> { ) -> Substitution { let sig_ty = sig_ty.cast(Interner); let self_subst = iter::once(&sig_ty); - let Some(parent) = parent.as_generic_def_id() else { + let Some(parent) = parent.as_generic_def_id(db.upcast()) else { return Substitution::from_iter(Interner, self_subst); }; Substitution::from_iter( diff --git a/crates/hir-ty/src/chalk_db.rs b/crates/hir-ty/src/chalk_db.rs index debae1fe12..3ac8cbaaf8 100644 --- a/crates/hir-ty/src/chalk_db.rs +++ b/crates/hir-ty/src/chalk_db.rs @@ -13,7 +13,8 @@ use hir_def::{ data::adt::StructFlags, hir::Movability, lang_item::{LangItem, LangItemTarget}, - AssocItemId, BlockId, GenericDefId, HasModule, ItemContainerId, Lookup, TypeAliasId, VariantId, + AssocItemId, BlockId, CallableDefId, GenericDefId, HasModule, ItemContainerId, Lookup, + TypeAliasId, VariantId, }; use hir_expand::name::name; @@ -28,9 +29,9 @@ use crate::{ to_assoc_type_id, to_chalk_trait_id, traits::ChalkContext, utils::ClosureSubst, - wrap_empty_binders, AliasEq, AliasTy, BoundVar, CallableDefId, DebruijnIndex, FnDefId, - Interner, ProjectionTy, ProjectionTyExt, QuantifiedWhereClause, Substitution, TraitRef, - TraitRefExt, Ty, TyBuilder, TyExt, TyKind, WhereClause, + wrap_empty_binders, AliasEq, AliasTy, BoundVar, DebruijnIndex, FnDefId, Interner, ProjectionTy, + ProjectionTyExt, QuantifiedWhereClause, Substitution, TraitRef, TraitRefExt, Ty, TyBuilder, + TyExt, TyKind, WhereClause, }; pub(crate) type AssociatedTyDatum = chalk_solve::rust_ir::AssociatedTyDatum<Interner>; @@ -102,7 +103,7 @@ impl chalk_solve::RustIrDatabase<Interner> for ChalkContext<'_> { &self, fn_def_id: chalk_ir::FnDefId<Interner>, ) -> Arc<rust_ir::FnDefDatum<Interner>> { - self.db.fn_def_datum(self.krate, fn_def_id) + self.db.fn_def_datum(fn_def_id) } fn impls_for_trait( @@ -912,16 +913,13 @@ fn type_alias_associated_ty_value( Arc::new(value) } -pub(crate) fn fn_def_datum_query( - db: &dyn HirDatabase, - _krate: CrateId, - fn_def_id: FnDefId, -) -> Arc<FnDefDatum> { +pub(crate) fn fn_def_datum_query(db: &dyn HirDatabase, fn_def_id: FnDefId) -> Arc<FnDefDatum> { let callable_def: CallableDefId = from_chalk(db, fn_def_id); - let generic_params = generics(db.upcast(), callable_def.into()); + let generic_def = GenericDefId::from_callable(db.upcast(), callable_def); + let generic_params = generics(db.upcast(), generic_def); let (sig, binders) = db.callable_item_signature(callable_def).into_value_and_skipped_binders(); let bound_vars = generic_params.bound_vars_subst(db, DebruijnIndex::INNERMOST); - let where_clauses = convert_where_clauses(db, callable_def.into(), &bound_vars); + let where_clauses = convert_where_clauses(db, generic_def, &bound_vars); let bound = rust_ir::FnDefDatumBound { // Note: Chalk doesn't actually use this information yet as far as I am aware, but we provide it anyway inputs_and_output: chalk_ir::Binders::empty( @@ -948,7 +946,8 @@ pub(crate) fn fn_def_datum_query( pub(crate) fn fn_def_variance_query(db: &dyn HirDatabase, fn_def_id: FnDefId) -> Variances { let callable_def: CallableDefId = from_chalk(db, fn_def_id); - let generic_params = generics(db.upcast(), callable_def.into()); + let generic_params = + generics(db.upcast(), GenericDefId::from_callable(db.upcast(), callable_def)); Variances::from_iter( Interner, std::iter::repeat(chalk_ir::Variance::Invariant).take(generic_params.len()), diff --git a/crates/hir-ty/src/chalk_ext.rs b/crates/hir-ty/src/chalk_ext.rs index 4279c75651..320e5bd8a2 100644 --- a/crates/hir-ty/src/chalk_ext.rs +++ b/crates/hir-ty/src/chalk_ext.rs @@ -188,9 +188,10 @@ impl TyExt for Ty { fn as_generic_def(&self, db: &dyn HirDatabase) -> Option<GenericDefId> { match *self.kind(Interner) { TyKind::Adt(AdtId(adt), ..) => Some(adt.into()), - TyKind::FnDef(callable, ..) => { - Some(db.lookup_intern_callable_def(callable.into()).into()) - } + TyKind::FnDef(callable, ..) => Some(GenericDefId::from_callable( + db.upcast(), + db.lookup_intern_callable_def(callable.into()), + )), TyKind::AssociatedType(type_alias, ..) => Some(from_assoc_type_id(type_alias).into()), TyKind::Foreign(type_alias, ..) => Some(from_foreign_def_id(type_alias).into()), _ => None, diff --git a/crates/hir-ty/src/db.rs b/crates/hir-ty/src/db.rs index e951048021..734aad4945 100644 --- a/crates/hir-ty/src/db.rs +++ b/crates/hir-ty/src/db.rs @@ -9,8 +9,8 @@ use base_db::{ CrateId, Upcast, }; use hir_def::{ - db::DefDatabase, hir::ExprId, layout::TargetDataLayout, AdtId, BlockId, ConstParamId, - DefWithBodyId, EnumVariantId, FunctionId, GeneralConstId, GenericDefId, ImplId, + db::DefDatabase, hir::ExprId, layout::TargetDataLayout, AdtId, BlockId, CallableDefId, + ConstParamId, DefWithBodyId, EnumVariantId, FunctionId, GeneralConstId, GenericDefId, ImplId, LifetimeParamId, LocalFieldId, StaticId, TypeAliasId, TypeOrConstParamId, VariantId, }; use la_arena::ArenaMap; @@ -24,9 +24,8 @@ use crate::{ lower::{GenericDefaults, GenericPredicates}, method_resolution::{InherentImpls, TraitImpls, TyFingerprint}, mir::{BorrowckResult, MirBody, MirLowerError}, - Binders, CallableDefId, ClosureId, Const, FnDefId, ImplTraitId, ImplTraits, InferenceResult, - Interner, PolyFnSig, QuantifiedWhereClause, Substitution, TraitEnvironment, TraitRef, Ty, - TyDefId, ValueTyDefId, + Binders, ClosureId, Const, FnDefId, ImplTraitId, ImplTraits, InferenceResult, Interner, + PolyFnSig, Substitution, TraitEnvironment, TraitRef, Ty, TyDefId, ValueTyDefId, }; use hir_expand::name::Name; @@ -81,8 +80,32 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> { #[salsa::cycle(crate::consteval::const_eval_discriminant_recover)] fn const_eval_discriminant(&self, def: EnumVariantId) -> Result<i128, ConstEvalError>; + #[salsa::invoke(crate::method_resolution::lookup_impl_method_query)] + fn lookup_impl_method( + &self, + env: Arc<TraitEnvironment>, + func: FunctionId, + fn_subst: Substitution, + ) -> (FunctionId, Substitution); + // endregion:mir + #[salsa::invoke(crate::layout::layout_of_adt_query)] + #[salsa::cycle(crate::layout::layout_of_adt_recover)] + fn layout_of_adt( + &self, + def: AdtId, + subst: Substitution, + env: Arc<TraitEnvironment>, + ) -> Result<Arc<Layout>, LayoutError>; + + #[salsa::invoke(crate::layout::layout_of_ty_query)] + #[salsa::cycle(crate::layout::layout_of_ty_recover)] + fn layout_of_ty(&self, ty: Ty, env: Arc<TraitEnvironment>) -> Result<Arc<Layout>, LayoutError>; + + #[salsa::invoke(crate::layout::target_data_layout_query)] + fn target_data_layout(&self, krate: CrateId) -> Result<Arc<TargetDataLayout>, Arc<str>>; + #[salsa::invoke(crate::lower::ty_query)] #[salsa::cycle(crate::lower::ty_recover)] fn ty(&self, def: TyDefId) -> Binders<Ty>; @@ -105,30 +128,6 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> { #[salsa::invoke(crate::lower::field_types_query)] fn field_types(&self, var: VariantId) -> Arc<ArenaMap<LocalFieldId, Binders<Ty>>>; - #[salsa::invoke(crate::layout::layout_of_adt_query)] - #[salsa::cycle(crate::layout::layout_of_adt_recover)] - fn layout_of_adt( - &self, - def: AdtId, - subst: Substitution, - env: Arc<TraitEnvironment>, - ) -> Result<Arc<Layout>, LayoutError>; - - #[salsa::invoke(crate::layout::layout_of_ty_query)] - #[salsa::cycle(crate::layout::layout_of_ty_recover)] - fn layout_of_ty(&self, ty: Ty, env: Arc<TraitEnvironment>) -> Result<Arc<Layout>, LayoutError>; - - #[salsa::invoke(crate::layout::target_data_layout_query)] - fn target_data_layout(&self, krate: CrateId) -> Result<Arc<TargetDataLayout>, Arc<str>>; - - #[salsa::invoke(crate::method_resolution::lookup_impl_method_query)] - fn lookup_impl_method( - &self, - env: Arc<TraitEnvironment>, - func: FunctionId, - fn_subst: Substitution, - ) -> (FunctionId, Substitution); - #[salsa::invoke(crate::lower::callable_item_sig)] fn callable_item_signature(&self, def: CallableDefId) -> PolyFnSig; @@ -145,7 +144,7 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> { def: GenericDefId, param_id: TypeOrConstParamId, assoc_name: Option<Name>, - ) -> Arc<[Binders<QuantifiedWhereClause>]>; + ) -> GenericPredicates; #[salsa::invoke(crate::lower::generic_predicates_query)] fn generic_predicates(&self, def: GenericDefId) -> GenericPredicates; @@ -232,7 +231,7 @@ pub trait HirDatabase: DefDatabase + Upcast<dyn DefDatabase> { ) -> sync::Arc<chalk_db::ImplDatum>; #[salsa::invoke(chalk_db::fn_def_datum_query)] - fn fn_def_datum(&self, krate: CrateId, fn_def_id: FnDefId) -> sync::Arc<chalk_db::FnDefDatum>; + fn fn_def_datum(&self, fn_def_id: FnDefId) -> sync::Arc<chalk_db::FnDefDatum>; #[salsa::invoke(chalk_db::fn_def_variance_query)] fn fn_def_variance(&self, fn_def_id: FnDefId) -> chalk_db::Variances; diff --git a/crates/hir-ty/src/display.rs b/crates/hir-ty/src/display.rs index 66b5398b88..458970aa70 100644 --- a/crates/hir-ty/src/display.rs +++ b/crates/hir-ty/src/display.rs @@ -21,8 +21,8 @@ use hir_def::{ path::{Path, PathKind}, type_ref::{TraitBoundModifier, TypeBound, TypeRef}, visibility::Visibility, - HasModule, ImportPathConfig, ItemContainerId, LocalFieldId, Lookup, ModuleDefId, ModuleId, - TraitId, + GenericDefId, HasModule, ImportPathConfig, ItemContainerId, LocalFieldId, Lookup, ModuleDefId, + ModuleId, TraitId, }; use hir_expand::name::Name; use intern::{Internable, Interned}; @@ -988,7 +988,8 @@ impl HirDisplay for Ty { f.end_location_link(); if parameters.len(Interner) > 0 { - let generics = generics(db.upcast(), def.into()); + let generic_def_id = GenericDefId::from_callable(db.upcast(), def); + let generics = generics(db.upcast(), generic_def_id); let (parent_len, self_param, type_, const_, impl_, lifetime) = generics.provenance_split(); let parameters = parameters.as_slice(Interner); @@ -1002,8 +1003,9 @@ impl HirDisplay for Ty { debug_assert_eq!(parent_params.len(), parent_len); let parent_params = - generic_args_sans_defaults(f, Some(def.into()), parent_params); - let fn_params = generic_args_sans_defaults(f, Some(def.into()), fn_params); + generic_args_sans_defaults(f, Some(generic_def_id), parent_params); + let fn_params = + generic_args_sans_defaults(f, Some(generic_def_id), fn_params); write!(f, "<")?; hir_fmt_generic_arguments(f, parent_params, None)?; diff --git a/crates/hir-ty/src/generics.rs b/crates/hir-ty/src/generics.rs index ea10e6881e..7f8dd920e6 100644 --- a/crates/hir-ty/src/generics.rs +++ b/crates/hir-ty/src/generics.rs @@ -216,7 +216,6 @@ fn parent_generic_def(db: &dyn DefDatabase, def: GenericDefId) -> Option<Generic GenericDefId::FunctionId(it) => it.lookup(db).container, GenericDefId::TypeAliasId(it) => it.lookup(db).container, GenericDefId::ConstId(it) => it.lookup(db).container, - GenericDefId::EnumVariantId(it) => return Some(it.lookup(db).parent.into()), GenericDefId::AdtId(_) | GenericDefId::TraitId(_) | GenericDefId::ImplId(_) diff --git a/crates/hir-ty/src/infer/expr.rs b/crates/hir-ty/src/infer/expr.rs index 95f28531ac..3647243537 100644 --- a/crates/hir-ty/src/infer/expr.rs +++ b/crates/hir-ty/src/infer/expr.rs @@ -13,7 +13,7 @@ use hir_def::{ }, lang_item::{LangItem, LangItemTarget}, path::{GenericArgs, Path}, - BlockId, FieldId, GenericParamId, ItemContainerId, Lookup, TupleFieldId, TupleId, + BlockId, FieldId, GenericDefId, GenericParamId, ItemContainerId, Lookup, TupleFieldId, TupleId, }; use hir_expand::name::{name, Name}; use stdx::always; @@ -1895,7 +1895,8 @@ impl InferenceContext<'_> { let callable_ty = self.resolve_ty_shallow(callable_ty); if let TyKind::FnDef(fn_def, parameters) = callable_ty.kind(Interner) { let def: CallableDefId = from_chalk(self.db, *fn_def); - let generic_predicates = self.db.generic_predicates(def.into()); + let generic_predicates = + self.db.generic_predicates(GenericDefId::from_callable(self.db.upcast(), def)); for predicate in generic_predicates.iter() { let (predicate, binders) = predicate .clone() diff --git a/crates/hir-ty/src/infer/path.rs b/crates/hir-ty/src/infer/path.rs index d876008cd5..490ecfd7fa 100644 --- a/crates/hir-ty/src/infer/path.rs +++ b/crates/hir-ty/src/infer/path.rs @@ -41,14 +41,7 @@ impl InferenceContext<'_> { fn resolve_value_path(&mut self, path: &Path, id: ExprOrPatId) -> Option<ValuePathResolution> { let (value, self_subst) = self.resolve_value_path_inner(path, id)?; - let value_def = match value { - ValueNs::LocalBinding(pat) => match self.result.type_of_binding.get(pat) { - Some(ty) => return Some(ValuePathResolution::NonGeneric(ty.clone())), - None => { - never!("uninferred pattern?"); - return None; - } - }, + let value_def: ValueTyDefId = match value { ValueNs::FunctionId(it) => it.into(), ValueNs::ConstId(it) => it.into(), ValueNs::StaticId(it) => it.into(), @@ -62,48 +55,79 @@ impl InferenceContext<'_> { it.into() } + ValueNs::LocalBinding(pat) => { + return match self.result.type_of_binding.get(pat) { + Some(ty) => Some(ValuePathResolution::NonGeneric(ty.clone())), + None => { + never!("uninferred pattern?"); + None + } + } + } ValueNs::ImplSelf(impl_id) => { let generics = crate::generics::generics(self.db.upcast(), impl_id.into()); let substs = generics.placeholder_subst(self.db); let ty = self.db.impl_self_ty(impl_id).substitute(Interner, &substs); - if let Some((AdtId::StructId(struct_id), substs)) = ty.as_adt() { - return Some(ValuePathResolution::GenericDef( + return if let Some((AdtId::StructId(struct_id), substs)) = ty.as_adt() { + Some(ValuePathResolution::GenericDef( struct_id.into(), struct_id.into(), substs.clone(), - )); + )) } else { // FIXME: report error, invalid Self reference - return None; - } + None + }; } ValueNs::GenericParam(it) => { return Some(ValuePathResolution::NonGeneric(self.db.const_param_ty(it))) } }; + let generic_def_id = value_def.to_generic_def_id(self.db); + let Some(generic_def) = generic_def_id else { + // `value_def` is the kind of item that can never be generic (i.e. statics, at least + // currently). We can just skip the binders to get its type. + let (ty, binders) = self.db.value_ty(value_def)?.into_value_and_skipped_binders(); + stdx::always!(binders.is_empty(Interner), "non-empty binders for non-generic def",); + return Some(ValuePathResolution::NonGeneric(ty)); + }; + let ctx = crate::lower::TyLoweringContext::new(self.db, &self.resolver, self.owner.into()); let substs = ctx.substs_from_path(path, value_def, true); let substs = substs.as_slice(Interner); + + if let ValueNs::EnumVariantId(_) = value { + let mut it = self_subst + .as_ref() + .map_or(&[][..], |s| s.as_slice(Interner)) + .iter() + .chain(substs) + .cloned(); + let builder = TyBuilder::subst_for_def(self.db, generic_def, None); + let substs = builder + .fill(|x| { + it.next().unwrap_or_else(|| match x { + ParamKind::Type => { + self.result.standard_types.unknown.clone().cast(Interner) + } + ParamKind::Const(ty) => consteval::unknown_const_as_generic(ty.clone()), + ParamKind::Lifetime => error_lifetime().cast(Interner), + }) + }) + .build(); + + return Some(ValuePathResolution::GenericDef(value_def, generic_def, substs)); + } + let parent_substs = self_subst.or_else(|| { - let generics = generics(self.db.upcast(), value_def.to_generic_def_id()?); + let generics = generics(self.db.upcast(), generic_def_id?); let parent_params_len = generics.parent_generics()?.len(); let parent_args = &substs[substs.len() - parent_params_len..]; Some(Substitution::from_iter(Interner, parent_args)) }); let parent_substs_len = parent_substs.as_ref().map_or(0, |s| s.len(Interner)); let mut it = substs.iter().take(substs.len() - parent_substs_len).cloned(); - - let Some(generic_def) = value_def.to_generic_def_id() else { - // `value_def` is the kind of item that can never be generic (i.e. statics, at least - // currently). We can just skip the binders to get its type. - let (ty, binders) = self.db.value_ty(value_def)?.into_value_and_skipped_binders(); - stdx::always!( - parent_substs.is_none() && binders.is_empty(Interner), - "non-empty binders for non-generic def", - ); - return Some(ValuePathResolution::NonGeneric(ty)); - }; let builder = TyBuilder::subst_for_def(self.db, generic_def, parent_substs); let substs = builder .fill(|x| { diff --git a/crates/hir-ty/src/lib.rs b/crates/hir-ty/src/lib.rs index 5e33e1285e..07c0cf920f 100644 --- a/crates/hir-ty/src/lib.rs +++ b/crates/hir-ty/src/lib.rs @@ -60,7 +60,7 @@ use chalk_ir::{ NoSolution, }; use either::Either; -use hir_def::{hir::ExprId, type_ref::Rawness, GeneralConstId, TypeOrConstParamId}; +use hir_def::{hir::ExprId, type_ref::Rawness, CallableDefId, GeneralConstId, TypeOrConstParamId}; use hir_expand::name; use la_arena::{Arena, Idx}; use mir::{MirEvalError, VTableMap}; @@ -84,8 +84,8 @@ pub use infer::{ }; pub use interner::Interner; pub use lower::{ - associated_type_shorthand_candidates, CallableDefId, ImplTraitLoweringMode, ParamLoweringMode, - TyDefId, TyLoweringContext, ValueTyDefId, + associated_type_shorthand_candidates, ImplTraitLoweringMode, ParamLoweringMode, TyDefId, + TyLoweringContext, ValueTyDefId, }; pub use mapping::{ from_assoc_type_id, from_chalk_trait_id, from_foreign_def_id, from_placeholder_idx, diff --git a/crates/hir-ty/src/lower.rs b/crates/hir-ty/src/lower.rs index 96f545415e..fd215adde2 100644 --- a/crates/hir-ty/src/lower.rs +++ b/crates/hir-ty/src/lower.rs @@ -11,10 +11,7 @@ use std::{ ops::{self, Not as _}, }; -use base_db::{ - salsa::{Cycle, InternValueTrivial}, - CrateId, -}; +use base_db::{salsa::Cycle, CrateId}; use chalk_ir::{ cast::Cast, fold::{Shift, TypeFoldable}, @@ -38,10 +35,10 @@ use hir_def::{ type_ref::{ ConstRef, LifetimeRef, TraitBoundModifier, TraitRef as HirTraitRef, TypeBound, TypeRef, }, - AdtId, AssocItemId, ConstId, ConstParamId, DefWithBodyId, EnumId, EnumVariantId, FunctionId, - GenericDefId, GenericParamId, HasModule, ImplId, InTypeConstLoc, ItemContainerId, LocalFieldId, - Lookup, ModuleDefId, StaticId, StructId, TraitId, TypeAliasId, TypeOrConstParamId, TypeOwnerId, - UnionId, VariantId, + AdtId, AssocItemId, CallableDefId, ConstId, ConstParamId, DefWithBodyId, EnumId, EnumVariantId, + FunctionId, GenericDefId, GenericParamId, HasModule, ImplId, InTypeConstLoc, ItemContainerId, + LocalFieldId, Lookup, StaticId, StructId, TraitId, TypeAliasId, TypeOrConstParamId, + TypeOwnerId, UnionId, VariantId, }; use hir_expand::{name::Name, ExpandResult}; use intern::Interned; @@ -1535,7 +1532,7 @@ pub(crate) fn generic_predicates_for_param_query( def: GenericDefId, param_id: TypeOrConstParamId, assoc_name: Option<Name>, -) -> Arc<[Binders<QuantifiedWhereClause>]> { +) -> GenericPredicates { let resolver = def.resolver(db.upcast()); let ctx = if let GenericDefId::FunctionId(_) = def { TyLoweringContext::new(db, &resolver, def.into()) @@ -1611,7 +1608,7 @@ pub(crate) fn generic_predicates_for_param_query( ); }; } - predicates.into() + GenericPredicates(predicates.is_empty().not().then(|| predicates.into())) } pub(crate) fn generic_predicates_for_param_recover( @@ -1620,15 +1617,15 @@ pub(crate) fn generic_predicates_for_param_recover( _def: &GenericDefId, _param_id: &TypeOrConstParamId, _assoc_name: &Option<Name>, -) -> Arc<[Binders<QuantifiedWhereClause>]> { - Arc::from_iter(None) +) -> GenericPredicates { + GenericPredicates(None) } pub(crate) fn trait_environment_for_body_query( db: &dyn HirDatabase, def: DefWithBodyId, ) -> Arc<TraitEnvironment> { - let Some(def) = def.as_generic_def_id() else { + let Some(def) = def.as_generic_def_id(db.upcast()) else { let krate = def.module(db.upcast()).krate(); return TraitEnvironment::empty(krate); }; @@ -1995,47 +1992,6 @@ fn type_for_type_alias(db: &dyn HirDatabase, t: TypeAliasId) -> Binders<Ty> { } } -#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)] -pub enum CallableDefId { - FunctionId(FunctionId), - StructId(StructId), - EnumVariantId(EnumVariantId), -} - -impl InternValueTrivial for CallableDefId {} - -impl_from!(FunctionId, StructId, EnumVariantId for CallableDefId); -impl From<CallableDefId> for ModuleDefId { - fn from(def: CallableDefId) -> ModuleDefId { - match def { - CallableDefId::FunctionId(f) => ModuleDefId::FunctionId(f), - CallableDefId::StructId(s) => ModuleDefId::AdtId(AdtId::StructId(s)), - CallableDefId::EnumVariantId(e) => ModuleDefId::EnumVariantId(e), - } - } -} - -impl CallableDefId { - pub fn krate(self, db: &dyn HirDatabase) -> CrateId { - let db = db.upcast(); - match self { - CallableDefId::FunctionId(f) => f.krate(db), - CallableDefId::StructId(s) => s.krate(db), - CallableDefId::EnumVariantId(e) => e.krate(db), - } - } -} - -impl From<CallableDefId> for GenericDefId { - fn from(def: CallableDefId) -> GenericDefId { - match def { - CallableDefId::FunctionId(f) => f.into(), - CallableDefId::StructId(s) => s.into(), - CallableDefId::EnumVariantId(e) => e.into(), - } - } -} - #[derive(Debug, Clone, Copy, PartialEq, Eq, Hash)] pub enum TyDefId { BuiltinType(BuiltinType), @@ -2056,12 +2012,12 @@ pub enum ValueTyDefId { impl_from!(FunctionId, StructId, UnionId, EnumVariantId, ConstId, StaticId for ValueTyDefId); impl ValueTyDefId { - pub(crate) fn to_generic_def_id(self) -> Option<GenericDefId> { + pub(crate) fn to_generic_def_id(self, db: &dyn HirDatabase) -> Option<GenericDefId> { match self { Self::FunctionId(id) => Some(id.into()), Self::StructId(id) => Some(id.into()), Self::UnionId(id) => Some(id.into()), - Self::EnumVariantId(var) => Some(var.into()), + Self::EnumVariantId(var) => Some(var.lookup(db.upcast()).parent.into()), Self::ConstId(id) => Some(id.into()), Self::StaticId(_) => None, } diff --git a/crates/hir-ty/src/method_resolution.rs b/crates/hir-ty/src/method_resolution.rs index 5ce124d6d2..ac11da789a 100644 --- a/crates/hir-ty/src/method_resolution.rs +++ b/crates/hir-ty/src/method_resolution.rs @@ -1322,7 +1322,7 @@ fn iterate_inherent_methods( callback: &mut dyn FnMut(ReceiverAdjustments, AssocItemId, bool) -> ControlFlow<()>, ) -> ControlFlow<()> { for &impl_id in impls.for_self_ty(self_ty) { - for &item in &table.db.impl_data(impl_id).items { + for &item in table.db.impl_data(impl_id).items.iter() { let visible = match is_valid_impl_method_candidate( table, self_ty, diff --git a/crates/hir-ty/src/mir/lower.rs b/crates/hir-ty/src/mir/lower.rs index 09302846f1..0569d06695 100644 --- a/crates/hir-ty/src/mir/lower.rs +++ b/crates/hir-ty/src/mir/lower.rs @@ -483,7 +483,7 @@ impl<'ctx> MirLowerCtx<'ctx> { Ok(Some(current)) } ValueNs::GenericParam(p) => { - let Some(def) = self.owner.as_generic_def_id() else { + let Some(def) = self.owner.as_generic_def_id(self.db.upcast()) else { not_supported!("owner without generic def id"); }; let gen = generics(self.db.upcast(), def); @@ -1330,7 +1330,7 @@ impl<'ctx> MirLowerCtx<'ctx> { } fn placeholder_subst(&mut self) -> Substitution { - match self.owner.as_generic_def_id() { + match self.owner.as_generic_def_id(self.db.upcast()) { Some(it) => TyBuilder::placeholder_subst(self.db, it), None => Substitution::empty(Interner), } diff --git a/crates/hir-ty/src/mir/monomorphization.rs b/crates/hir-ty/src/mir/monomorphization.rs index 43afa61504..172dea02e6 100644 --- a/crates/hir-ty/src/mir/monomorphization.rs +++ b/crates/hir-ty/src/mir/monomorphization.rs @@ -302,7 +302,7 @@ pub fn monomorphized_mir_body_query( subst: Substitution, trait_env: Arc<crate::TraitEnvironment>, ) -> Result<Arc<MirBody>, MirLowerError> { - let generics = owner.as_generic_def_id().map(|g_def| generics(db.upcast(), g_def)); + let generics = owner.as_generic_def_id(db.upcast()).map(|g_def| generics(db.upcast(), g_def)); let filler = &mut Filler { db, subst: &subst, trait_env, generics, owner }; let body = db.mir_body(owner)?; let mut body = (*body).clone(); @@ -327,7 +327,7 @@ pub fn monomorphized_mir_body_for_closure_query( trait_env: Arc<crate::TraitEnvironment>, ) -> Result<Arc<MirBody>, MirLowerError> { let InternedClosure(owner, _) = db.lookup_intern_closure(closure.into()); - let generics = owner.as_generic_def_id().map(|g_def| generics(db.upcast(), g_def)); + let generics = owner.as_generic_def_id(db.upcast()).map(|g_def| generics(db.upcast(), g_def)); let filler = &mut Filler { db, subst: &subst, trait_env, generics, owner }; let body = db.mir_body_for_closure(closure)?; let mut body = (*body).clone(); @@ -343,7 +343,7 @@ pub fn monomorphize_mir_body_bad( trait_env: Arc<crate::TraitEnvironment>, ) -> Result<MirBody, MirLowerError> { let owner = body.owner; - let generics = owner.as_generic_def_id().map(|g_def| generics(db.upcast(), g_def)); + let generics = owner.as_generic_def_id(db.upcast()).map(|g_def| generics(db.upcast(), g_def)); let filler = &mut Filler { db, subst: &subst, trait_env, generics, owner }; filler.fill_body(&mut body)?; Ok(body) diff --git a/crates/hir/src/from_id.rs b/crates/hir/src/from_id.rs index 887227bf4d..2ad39817b2 100644 --- a/crates/hir/src/from_id.rs +++ b/crates/hir/src/from_id.rs @@ -182,7 +182,6 @@ impl From<GenericDef> for GenericDefId { GenericDef::TraitAlias(it) => GenericDefId::TraitAliasId(it.id), GenericDef::TypeAlias(it) => GenericDefId::TypeAliasId(it.id), GenericDef::Impl(it) => GenericDefId::ImplId(it.id), - GenericDef::Variant(it) => GenericDefId::EnumVariantId(it.into()), GenericDef::Const(it) => GenericDefId::ConstId(it.id), } } @@ -197,7 +196,6 @@ impl From<GenericDefId> for GenericDef { GenericDefId::TraitAliasId(it) => GenericDef::TraitAlias(it.into()), GenericDefId::TypeAliasId(it) => GenericDef::TypeAlias(it.into()), GenericDefId::ImplId(it) => GenericDef::Impl(it.into()), - GenericDefId::EnumVariantId(it) => GenericDef::Variant(it.into()), GenericDefId::ConstId(it) => GenericDef::Const(it.into()), } } diff --git a/crates/hir/src/has_source.rs b/crates/hir/src/has_source.rs index 929c8b3c09..18e27130f3 100644 --- a/crates/hir/src/has_source.rs +++ b/crates/hir/src/has_source.rs @@ -5,10 +5,10 @@ use either::Either; use hir_def::{ nameres::{ModuleOrigin, ModuleSource}, src::{HasChildSource, HasSource as _}, - Lookup, MacroId, VariantId, + CallableDefId, Lookup, MacroId, VariantId, }; use hir_expand::{HirFileId, InFile}; -use hir_ty::{db::InternedClosure, CallableDefId}; +use hir_ty::db::InternedClosure; use syntax::ast; use tt::TextRange; diff --git a/crates/hir/src/lib.rs b/crates/hir/src/lib.rs index c1fe8a8b31..eea25ac18a 100644 --- a/crates/hir/src/lib.rs +++ b/crates/hir/src/lib.rs @@ -52,11 +52,11 @@ use hir_def::{ path::ImportAlias, per_ns::PerNs, resolver::{HasResolver, Resolver}, - AssocItemId, AssocItemLoc, AttrDefId, ConstId, ConstParamId, CrateRootModuleId, DefWithBodyId, - EnumId, EnumVariantId, ExternCrateId, FunctionId, GenericDefId, GenericParamId, HasModule, - ImplId, InTypeConstId, ItemContainerId, LifetimeParamId, LocalFieldId, Lookup, MacroExpander, - ModuleId, StaticId, StructId, TraitAliasId, TraitId, TupleId, TypeAliasId, TypeOrConstParamId, - TypeParamId, UnionId, + AssocItemId, AssocItemLoc, AttrDefId, CallableDefId, ConstId, ConstParamId, CrateRootModuleId, + DefWithBodyId, EnumId, EnumVariantId, ExternCrateId, FunctionId, GenericDefId, GenericParamId, + HasModule, ImplId, InTypeConstId, ItemContainerId, LifetimeParamId, LocalFieldId, Lookup, + MacroExpander, ModuleId, StaticId, StructId, TraitAliasId, TraitId, TupleId, TypeAliasId, + TypeOrConstParamId, TypeParamId, UnionId, }; use hir_expand::{ attrs::collect_attrs, name::name, proc_macro::ProcMacroKind, AstId, MacroCallKind, ValueResult, @@ -71,7 +71,7 @@ use hir_ty::{ mir::{interpret_mir, MutBorrowKind}, primitive::UintTy, traits::FnTrait, - AliasTy, CallableDefId, CallableSig, Canonical, CanonicalVarKinds, Cast, ClosureId, GenericArg, + AliasTy, CallableSig, Canonical, CanonicalVarKinds, Cast, ClosureId, GenericArg, GenericArgData, Interner, ParamKind, QuantifiedWhereClause, Scalar, Substitution, TraitEnvironment, TraitRefExt, Ty, TyBuilder, TyDefId, TyExt, TyKind, ValueTyDefId, WhereClause, @@ -760,7 +760,7 @@ impl Module { impl_assoc_items_scratch.clear(); } - for &item in &db.impl_data(impl_def.id).items { + for &item in db.impl_data(impl_def.id).items.iter() { AssocItem::from(item).diagnostics(db, acc, style_lints); } } @@ -1144,7 +1144,7 @@ impl Field { let generic_def_id: GenericDefId = match self.parent { VariantDef::Struct(it) => it.id.into(), VariantDef::Union(it) => it.id.into(), - VariantDef::Variant(it) => it.id.into(), + VariantDef::Variant(it) => it.id.lookup(db.upcast()).parent.into(), }; let substs = TyBuilder::placeholder_subst(db, generic_def_id); let ty = db.field_types(var_id)[self.id].clone().substitute(Interner, &substs); @@ -1177,7 +1177,9 @@ impl Field { db.layout_of_ty( self.ty(db).ty, db.trait_environment(match hir_def::VariantId::from(self.parent) { - hir_def::VariantId::EnumVariantId(id) => GenericDefId::EnumVariantId(id), + hir_def::VariantId::EnumVariantId(id) => { + GenericDefId::AdtId(id.lookup(db.upcast()).parent.into()) + } hir_def::VariantId::StructId(id) => GenericDefId::AdtId(id.into()), hir_def::VariantId::UnionId(id) => GenericDefId::AdtId(id.into()), }), @@ -2501,7 +2503,7 @@ impl Trait { db: &dyn HirDatabase, count_required_only: bool, ) -> usize { - db.generic_params(GenericDefId::from(self.id)) + db.generic_params(self.id.into()) .type_or_consts .iter() .filter(|(_, ty)| !matches!(ty, TypeOrConstParamData::TypeParamData(ty) if ty.provenance != TypeParamProvenance::TypeParamList)) @@ -3107,9 +3109,6 @@ pub enum GenericDef { TraitAlias(TraitAlias), TypeAlias(TypeAlias), Impl(Impl), - // enum variants cannot have generics themselves, but their parent enums - // can, and this makes some code easier to write - Variant(Variant), // consts can have type parameters from their parents (i.e. associated consts of traits) Const(Const), } @@ -3120,7 +3119,6 @@ impl_from!( TraitAlias, TypeAlias, Impl, - Variant, Const for GenericDef ); @@ -4052,7 +4050,9 @@ impl Type { ValueTyDefId::FunctionId(it) => GenericDefId::FunctionId(it), ValueTyDefId::StructId(it) => GenericDefId::AdtId(AdtId::StructId(it)), ValueTyDefId::UnionId(it) => GenericDefId::AdtId(AdtId::UnionId(it)), - ValueTyDefId::EnumVariantId(it) => GenericDefId::EnumVariantId(it), + ValueTyDefId::EnumVariantId(it) => { + GenericDefId::AdtId(AdtId::EnumId(it.lookup(db.upcast()).parent)) + } ValueTyDefId::StaticId(_) => return Type::new(db, def, ty.skip_binders().clone()), }, ); diff --git a/crates/hir/src/symbols.rs b/crates/hir/src/symbols.rs index 3b88836c24..02905ca2ce 100644 --- a/crates/hir/src/symbols.rs +++ b/crates/hir/src/symbols.rs @@ -231,7 +231,7 @@ impl<'a> SymbolCollector<'a> { let impl_data = self.db.impl_data(impl_id); let impl_name = Some(SmolStr::new(impl_data.self_ty.display(self.db).to_string())); self.with_container_name(impl_name, |s| { - for &assoc_item_id in &impl_data.items { + for &assoc_item_id in impl_data.items.iter() { s.push_assoc_item(assoc_item_id) } }) diff --git a/crates/hir/src/term_search/expr.rs b/crates/hir/src/term_search/expr.rs index bb687f5e73..a6faa97196 100644 --- a/crates/hir/src/term_search/expr.rs +++ b/crates/hir/src/term_search/expr.rs @@ -209,7 +209,7 @@ impl Expr { } } Expr::Variant { variant, generics, params } => { - let generics = non_default_generics(db, (*variant).into(), generics); + let generics = non_default_generics(db, variant.parent_enum(db).into(), generics); let generics_str = match generics.is_empty() { true => String::new(), false => { diff --git a/crates/ide-assists/src/handlers/term_search.rs b/crates/ide-assists/src/handlers/term_search.rs index 7f1274cade..b62c3b3323 100644 --- a/crates/ide-assists/src/handlers/term_search.rs +++ b/crates/ide-assists/src/handlers/term_search.rs @@ -144,7 +144,7 @@ fn f() { let a = A { x: 1, y: true }; let b: i32 = a.x; }"#, term_search, r#"//- minicore: todo, unimplemented, option fn f() { let a: i32 = 1; let b: Option<i32> = todo$0!(); }"#, - r#"fn f() { let a: i32 = 1; let b: Option<i32> = Some(a); }"#, + r#"fn f() { let a: i32 = 1; let b: Option<i32> = Some::<i32>(a); }"#, ) } @@ -156,7 +156,7 @@ fn f() { let a: i32 = 1; let b: Option<i32> = todo$0!(); }"#, enum Option<T> { None, Some(T) } fn f() { let a: i32 = 1; let b: Option<i32> = todo$0!(); }"#, r#"enum Option<T> { None, Some(T) } -fn f() { let a: i32 = 1; let b: Option<i32> = Option::Some(a); }"#, +fn f() { let a: i32 = 1; let b: Option<i32> = Option::Some::<i32>(a); }"#, ) } @@ -168,7 +168,7 @@ fn f() { let a: i32 = 1; let b: Option<i32> = Option::Some(a); }"#, enum Option<T> { None, Some(T) } fn f() { let a: Option<i32> = Option::None; let b: Option<Option<i32>> = todo$0!(); }"#, r#"enum Option<T> { None, Some(T) } -fn f() { let a: Option<i32> = Option::None; let b: Option<Option<i32>> = Option::Some(a); }"#, +fn f() { let a: Option<i32> = Option::None; let b: Option<Option<i32>> = Option::Some::<Option<i32>>(a); }"#, ) } @@ -180,7 +180,7 @@ fn f() { let a: Option<i32> = Option::None; let b: Option<Option<i32>> = Option: enum Foo<T = i32> { Foo(T) } fn f() { let a = 0; let b: Foo = todo$0!(); }"#, r#"enum Foo<T = i32> { Foo(T) } -fn f() { let a = 0; let b: Foo = Foo::Foo(a); }"#, +fn f() { let a = 0; let b: Foo = Foo::Foo::<i32>(a); }"#, ); check_assist( diff --git a/crates/ide-completion/src/render.rs b/crates/ide-completion/src/render.rs index b98f745f17..ff60a7669e 100644 --- a/crates/ide-completion/src/render.rs +++ b/crates/ide-completion/src/render.rs @@ -2641,7 +2641,7 @@ fn foo() { expect![[r#" lc foo [type+local] ex foo [type] - ex Foo::B [type] + ex Foo::B::<u32> [type] ev Foo::A(…) [type_could_unify] ev Foo::B [type_could_unify] en Foo [type_could_unify] diff --git a/crates/ide-db/src/active_parameter.rs b/crates/ide-db/src/active_parameter.rs index 088d2ec5e3..42a80d63b1 100644 --- a/crates/ide-db/src/active_parameter.rs +++ b/crates/ide-db/src/active_parameter.rs @@ -79,8 +79,9 @@ pub fn generic_def_for_node( sema: &Semantics<'_, RootDatabase>, generic_arg_list: &ast::GenericArgList, token: &SyntaxToken, -) -> Option<(hir::GenericDef, usize, bool)> { +) -> Option<(hir::GenericDef, usize, bool, Option<hir::Variant>)> { let parent = generic_arg_list.syntax().parent()?; + let mut variant = None; let def = match_ast! { match parent { ast::PathSegment(ps) => { @@ -91,7 +92,10 @@ pub fn generic_def_for_node( hir::PathResolution::Def(hir::ModuleDef::Trait(it)) => it.into(), hir::PathResolution::Def(hir::ModuleDef::TraitAlias(it)) => it.into(), hir::PathResolution::Def(hir::ModuleDef::TypeAlias(it)) => it.into(), - hir::PathResolution::Def(hir::ModuleDef::Variant(it)) => it.into(), + hir::PathResolution::Def(hir::ModuleDef::Variant(it)) => { + variant = Some(it); + it.parent_enum(sema.db).into() + }, hir::PathResolution::Def(hir::ModuleDef::BuiltinType(_)) | hir::PathResolution::Def(hir::ModuleDef::Const(_)) | hir::PathResolution::Def(hir::ModuleDef::Macro(_)) @@ -134,5 +138,5 @@ pub fn generic_def_for_node( .next() .map_or(false, |arg| !matches!(arg, ast::GenericArg::LifetimeArg(_))); - Some((def, active_param, first_arg_is_non_lifetime)) + Some((def, active_param, first_arg_is_non_lifetime, variant)) } diff --git a/crates/ide-db/src/search.rs b/crates/ide-db/src/search.rs index b62f34f415..e1cfe04898 100644 --- a/crates/ide-db/src/search.rs +++ b/crates/ide-db/src/search.rs @@ -320,7 +320,6 @@ impl Definition { hir::GenericDef::TraitAlias(it) => it.source(db).map(|src| src.syntax().cloned()), hir::GenericDef::TypeAlias(it) => it.source(db).map(|src| src.syntax().cloned()), hir::GenericDef::Impl(it) => it.source(db).map(|src| src.syntax().cloned()), - hir::GenericDef::Variant(it) => it.source(db).map(|src| src.syntax().cloned()), hir::GenericDef::Const(it) => it.source(db).map(|src| src.syntax().cloned()), }; return match def { diff --git a/crates/ide/src/signature_help.rs b/crates/ide/src/signature_help.rs index 89c725a6c4..c5eaacdb10 100644 --- a/crates/ide/src/signature_help.rs +++ b/crates/ide/src/signature_help.rs @@ -272,7 +272,7 @@ fn signature_help_for_generics( arg_list: ast::GenericArgList, token: SyntaxToken, ) -> Option<SignatureHelp> { - let (mut generics_def, mut active_parameter, first_arg_is_non_lifetime) = + let (generics_def, mut active_parameter, first_arg_is_non_lifetime, variant) = generic_def_for_node(sema, &arg_list, &token)?; let mut res = SignatureHelp { doc: None, @@ -290,6 +290,12 @@ fn signature_help_for_generics( hir::GenericDef::Adt(hir::Adt::Enum(it)) => { res.doc = it.docs(db); format_to!(res.signature, "enum {}", it.name(db).display(db)); + if let Some(variant) = variant { + // In paths, generics of an enum can be specified *after* one of its variants. + // eg. `None::<u8>` + // We'll use the signature of the enum, but include the docs of the variant. + res.doc = variant.docs(db); + } } hir::GenericDef::Adt(hir::Adt::Struct(it)) => { res.doc = it.docs(db); @@ -311,15 +317,6 @@ fn signature_help_for_generics( res.doc = it.docs(db); format_to!(res.signature, "type {}", it.name(db).display(db)); } - hir::GenericDef::Variant(it) => { - // In paths, generics of an enum can be specified *after* one of its variants. - // eg. `None::<u8>` - // We'll use the signature of the enum, but include the docs of the variant. - res.doc = it.docs(db); - let enum_ = it.parent_enum(db); - format_to!(res.signature, "enum {}", enum_.name(db).display(db)); - generics_def = enum_.into(); - } // These don't have generic args that can be specified hir::GenericDef::Impl(_) | hir::GenericDef::Const(_) => return None, } diff --git a/crates/mbe/Cargo.toml b/crates/mbe/Cargo.toml index 2046fa943a..18444018e1 100644 --- a/crates/mbe/Cargo.toml +++ b/crates/mbe/Cargo.toml @@ -16,6 +16,7 @@ cov-mark = "2.0.0-pre.1" rustc-hash.workspace = true smallvec.workspace = true tracing.workspace = true +arrayvec.workspace = true # local deps syntax.workspace = true diff --git a/crates/mbe/src/benchmark.rs b/crates/mbe/src/benchmark.rs index 19ba5c7a15..27dbc84a2b 100644 --- a/crates/mbe/src/benchmark.rs +++ b/crates/mbe/src/benchmark.rs @@ -170,7 +170,7 @@ fn invocation_fixtures( Op::Literal(it) => token_trees.push(tt::Leaf::from(it.clone()).into()), Op::Ident(it) => token_trees.push(tt::Leaf::from(it.clone()).into()), Op::Punct(puncts) => { - for punct in puncts { + for punct in puncts.as_slice() { token_trees.push(tt::Leaf::from(*punct).into()); } } @@ -187,7 +187,7 @@ fn invocation_fixtures( } if i + 1 != cnt { if let Some(sep) = separator { - match sep { + match &**sep { Separator::Literal(it) => { token_trees.push(tt::Leaf::Literal(it.clone()).into()) } diff --git a/crates/mbe/src/expander/matcher.rs b/crates/mbe/src/expander/matcher.rs index 0cec4e70da..972ad188ac 100644 --- a/crates/mbe/src/expander/matcher.rs +++ b/crates/mbe/src/expander/matcher.rs @@ -59,7 +59,7 @@ //! eof: [a $( a )* a b ·] //! ``` -use std::rc::Rc; +use std::{rc::Rc, sync::Arc}; use smallvec::{smallvec, SmallVec}; use span::{Edition, Span}; @@ -315,7 +315,7 @@ struct MatchState<'t> { up: Option<Box<MatchState<'t>>>, /// The separator if we are in a repetition. - sep: Option<Separator>, + sep: Option<Arc<Separator>>, /// The KleeneOp of this sequence if we are in a repetition. sep_kind: Option<RepeatKind>, diff --git a/crates/mbe/src/expander/transcriber.rs b/crates/mbe/src/expander/transcriber.rs index 0f689a2692..c09cbd1d07 100644 --- a/crates/mbe/src/expander/transcriber.rs +++ b/crates/mbe/src/expander/transcriber.rs @@ -195,7 +195,7 @@ fn expand_subtree( .into(), ), Op::Punct(puncts) => { - for punct in puncts { + for punct in puncts.as_slice() { arena.push( tt::Leaf::from({ let mut it = *punct; @@ -222,7 +222,7 @@ fn expand_subtree( } Op::Repeat { tokens: subtree, kind, separator } => { let ExpandResult { value: fragment, err: e } = - expand_repeat(ctx, subtree, *kind, separator, arena, marker); + expand_repeat(ctx, subtree, *kind, separator.as_deref(), arena, marker); err = err.or(e); push_fragment(ctx, arena, fragment) } @@ -383,7 +383,7 @@ fn expand_repeat( ctx: &mut ExpandCtx<'_>, template: &MetaTemplate, kind: RepeatKind, - separator: &Option<Separator>, + separator: Option<&Separator>, arena: &mut Vec<tt::TokenTree<Span>>, marker: impl Fn(&mut Span) + Copy, ) -> ExpandResult<Fragment> { diff --git a/crates/mbe/src/parser.rs b/crates/mbe/src/parser.rs index bbe00f0afc..256068a899 100644 --- a/crates/mbe/src/parser.rs +++ b/crates/mbe/src/parser.rs @@ -1,7 +1,9 @@ //! Parser recognizes special macro syntax, `$var` and `$(repeat)*`, in token //! trees. -use smallvec::{smallvec, SmallVec}; +use std::sync::Arc; + +use arrayvec::ArrayVec; use span::{Edition, Span, SyntaxContextId}; use syntax::SmolStr; @@ -86,14 +88,14 @@ pub(crate) enum Op { Repeat { tokens: MetaTemplate, kind: RepeatKind, - separator: Option<Separator>, + separator: Option<Arc<Separator>>, }, Subtree { tokens: MetaTemplate, delimiter: tt::Delimiter<Span>, }, Literal(tt::Literal<Span>), - Punct(SmallVec<[tt::Punct<Span>; 3]>), + Punct(Box<ArrayVec<tt::Punct<Span>, 3>>), Ident(tt::Ident<Span>), } @@ -126,7 +128,7 @@ pub(crate) enum MetaVarKind { pub(crate) enum Separator { Literal(tt::Literal<Span>), Ident(tt::Ident<Span>), - Puncts(SmallVec<[tt::Punct<Span>; 3]>), + Puncts(ArrayVec<tt::Punct<Span>, 3>), } // Note that when we compare a Separator, we just care about its textual value. @@ -165,7 +167,13 @@ fn next_op( src.next().expect("first token already peeked"); // Note that the '$' itself is a valid token inside macro_rules. let second = match src.next() { - None => return Ok(Op::Punct(smallvec![*p])), + None => { + return Ok(Op::Punct({ + let mut res = ArrayVec::new(); + res.push(*p); + Box::new(res) + })) + } Some(it) => it, }; match second { @@ -173,7 +181,7 @@ fn next_op( tt::DelimiterKind::Parenthesis => { let (separator, kind) = parse_repeat(src)?; let tokens = MetaTemplate::parse(edition, subtree, mode, new_meta_vars)?; - Op::Repeat { tokens, separator, kind } + Op::Repeat { tokens, separator: separator.map(Arc::new), kind } } tt::DelimiterKind::Brace => match mode { Mode::Template => { @@ -216,7 +224,11 @@ fn next_op( "`$$` is not allowed on the pattern side", )) } - Mode::Template => Op::Punct(smallvec![*punct]), + Mode::Template => Op::Punct({ + let mut res = ArrayVec::new(); + res.push(*punct); + Box::new(res) + }), }, tt::Leaf::Punct(_) | tt::Leaf::Literal(_) => { return Err(ParseError::expected("expected ident")) @@ -238,7 +250,7 @@ fn next_op( tt::TokenTree::Leaf(tt::Leaf::Punct(_)) => { // There's at least one punct so this shouldn't fail. let puncts = src.expect_glued_punct().unwrap(); - Op::Punct(puncts) + Op::Punct(Box::new(puncts)) } tt::TokenTree::Subtree(subtree) => { @@ -290,7 +302,7 @@ fn is_boolean_literal(lit: &tt::Literal<Span>) -> bool { } fn parse_repeat(src: &mut TtIter<'_, Span>) -> Result<(Option<Separator>, RepeatKind), ParseError> { - let mut separator = Separator::Puncts(SmallVec::new()); + let mut separator = Separator::Puncts(ArrayVec::new()); for tt in src { let tt = match tt { tt::TokenTree::Leaf(leaf) => leaf, @@ -312,7 +324,7 @@ fn parse_repeat(src: &mut TtIter<'_, Span>) -> Result<(Option<Separator>, Repeat '+' => RepeatKind::OneOrMore, '?' => RepeatKind::ZeroOrOne, _ => match &mut separator { - Separator::Puncts(puncts) if puncts.len() != 3 => { + Separator::Puncts(puncts) if puncts.len() < 3 => { puncts.push(*punct); continue; } diff --git a/crates/mbe/src/tt_iter.rs b/crates/mbe/src/tt_iter.rs index 9c7d7af7b1..3581fbbfd8 100644 --- a/crates/mbe/src/tt_iter.rs +++ b/crates/mbe/src/tt_iter.rs @@ -3,7 +3,7 @@ use core::fmt; -use smallvec::{smallvec, SmallVec}; +use arrayvec::ArrayVec; use syntax::SyntaxKind; use crate::{to_parser_input::to_parser_input, ExpandError, ExpandResult}; @@ -93,13 +93,15 @@ impl<'a, S: Copy> TtIter<'a, S> { /// /// This method currently may return a single quotation, which is part of lifetime ident and /// conceptually not a punct in the context of mbe. Callers should handle this. - pub(crate) fn expect_glued_punct(&mut self) -> Result<SmallVec<[tt::Punct<S>; 3]>, ()> { + pub(crate) fn expect_glued_punct(&mut self) -> Result<ArrayVec<tt::Punct<S>, 3>, ()> { let tt::TokenTree::Leaf(tt::Leaf::Punct(first)) = self.next().ok_or(())?.clone() else { return Err(()); }; + let mut res = ArrayVec::new(); if first.spacing == tt::Spacing::Alone { - return Ok(smallvec![first]); + res.push(first); + return Ok(res); } let (second, third) = match (self.peek_n(0), self.peek_n(1)) { @@ -108,14 +110,19 @@ impl<'a, S: Copy> TtIter<'a, S> { Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p3))), ) if p2.spacing == tt::Spacing::Joint => (p2, Some(p3)), (Some(tt::TokenTree::Leaf(tt::Leaf::Punct(p2))), _) => (p2, None), - _ => return Ok(smallvec![first]), + _ => { + res.push(first); + return Ok(res); + } }; match (first.char, second.char, third.map(|it| it.char)) { ('.', '.', Some('.' | '=')) | ('<', '<', Some('=')) | ('>', '>', Some('=')) => { let _ = self.next().unwrap(); let _ = self.next().unwrap(); - Ok(smallvec![first, *second, *third.unwrap()]) + res.push(first); + res.push(*second); + res.push(*third.unwrap()); } ('-' | '!' | '*' | '/' | '&' | '%' | '^' | '+' | '<' | '=' | '>' | '|', '=', _) | ('-' | '=' | '>', '>', _) @@ -126,10 +133,12 @@ impl<'a, S: Copy> TtIter<'a, S> { | ('<', '<', _) | ('|', '|', _) => { let _ = self.next().unwrap(); - Ok(smallvec![first, *second]) + res.push(first); + res.push(*second); } - _ => Ok(smallvec![first]), + _ => res.push(first), } + Ok(res) } pub(crate) fn peek_n(&self, n: usize) -> Option<&'a tt::TokenTree<S>> { self.inner.as_slice().get(n) |