From c60b1f6414dcdfcf772499c88780a532c0262c4c Mon Sep 17 00:00:00 2001 From: =?UTF-8?q?Lauren=C8=9Biu=20Nicola?= Date: Tue, 1 Nov 2022 11:31:31 +0200 Subject: [PATCH] :arrow_up: rust-analyzer --- Cargo.lock | 4 +- crates/flycheck/src/lib.rs | 4 +- crates/hir-def/src/item_tree/lower.rs | 8 +- crates/hir-def/src/path.rs | 3 + crates/hir-def/src/path/lower.rs | 8 +- crates/hir-ty/src/chalk_ext.rs | 17 +- crates/hir-ty/src/display.rs | 36 +++- crates/hir-ty/src/infer/path.rs | 2 +- crates/hir-ty/src/infer/unify.rs | 12 +- crates/hir-ty/src/lib.rs | 22 ++- crates/hir-ty/src/lower.rs | 124 +++++++++---- crates/hir-ty/src/method_resolution.rs | 84 ++++++--- .../hir-ty/src/tests/display_source_code.rs | 31 ++++ crates/hir-ty/src/tests/traits.rs | 121 ++++++++++++ crates/hir-ty/src/tls.rs | 28 ++- crates/hir/src/source_analyzer.rs | 65 +++---- crates/ide/src/goto_definition.rs | 82 +++++++++ crates/rust-analyzer/Cargo.toml | 2 +- crates/rust-analyzer/src/bin/main.rs | 8 +- crates/rust-analyzer/src/caps.rs | 14 +- crates/rust-analyzer/src/cli/lsif.rs | 6 +- crates/rust-analyzer/src/cli/scip.rs | 4 +- crates/rust-analyzer/src/config.rs | 8 +- .../rust-analyzer/src/diagnostics/to_proto.rs | 16 +- crates/rust-analyzer/src/from_proto.rs | 6 +- crates/rust-analyzer/src/global_state.rs | 2 +- crates/rust-analyzer/src/line_index.rs | 4 +- crates/rust-analyzer/src/lsp_ext.rs | 11 +- crates/rust-analyzer/src/lsp_utils.rs | 4 +- crates/rust-analyzer/src/main_loop.rs | 46 ++--- crates/rust-analyzer/src/to_proto.rs | 8 +- crates/syntax/rust.ungram | 2 +- crates/syntax/src/ast/generated/nodes.rs | 54 +++--- docs/dev/architecture.md | 2 + docs/dev/lsp-extensions.md | 8 +- editors/code/src/commands.ts | 129 +++++++------ editors/code/src/ctx.ts | 172 +++++++++++++----- editors/code/src/main.ts | 63 ++----- editors/code/src/run.ts | 6 +- lib/lsp-server/Cargo.toml | 2 +- 40 files changed, 824 insertions(+), 404 deletions(-) diff --git a/Cargo.lock b/Cargo.lock index 0ddea2f728d78..8931c17bbdc16 100644 --- a/Cargo.lock +++ b/Cargo.lock @@ -872,9 +872,9 @@ dependencies = [ [[package]] name = "lsp-types" -version = "0.93.1" +version = "0.93.2" source = "registry+https://github.com/rust-lang/crates.io-index" -checksum = "a3bcfee315dde785ba887edb540b08765fd7df75a7d948844be6bf5712246734" +checksum = "9be6e9c7e2d18f651974370d7aff703f9513e0df6e464fd795660edc77e6ca51" dependencies = [ "bitflags", "serde", diff --git a/crates/flycheck/src/lib.rs b/crates/flycheck/src/lib.rs index 73c3a48b4c5a3..8a91d6066614f 100644 --- a/crates/flycheck/src/lib.rs +++ b/crates/flycheck/src/lib.rs @@ -295,7 +295,9 @@ impl FlycheckActor { } => { let mut cmd = Command::new(toolchain::cargo()); cmd.arg(command); - cmd.args(&["--workspace", "--message-format=json"]); + cmd.current_dir(&self.root); + cmd.args(&["--workspace", "--message-format=json", "--manifest-path"]) + .arg(self.root.join("Cargo.toml").as_os_str()); if let Some(target) = target_triple { cmd.args(&["--target", target.as_str()]); diff --git a/crates/hir-def/src/item_tree/lower.rs b/crates/hir-def/src/item_tree/lower.rs index 077a1b619dd5a..79249757d9e9b 100644 --- a/crates/hir-def/src/item_tree/lower.rs +++ b/crates/hir-def/src/item_tree/lower.rs @@ -662,8 +662,12 @@ fn desugar_future_path(orig: TypeRef) -> Path { let mut generic_args: Vec<_> = std::iter::repeat(None).take(path.segments().len() - 1).collect(); let mut last = GenericArgs::empty(); - let binding = - AssociatedTypeBinding { name: name![Output], type_ref: Some(orig), bounds: Vec::new() }; + let binding = AssociatedTypeBinding { + name: name![Output], + args: None, + type_ref: Some(orig), + bounds: Vec::new(), + }; last.bindings.push(binding); generic_args.push(Some(Interned::new(last))); diff --git a/crates/hir-def/src/path.rs b/crates/hir-def/src/path.rs index 2f13a9fbf0e40..592223f7d85fe 100644 --- a/crates/hir-def/src/path.rs +++ b/crates/hir-def/src/path.rs @@ -68,6 +68,9 @@ pub struct GenericArgs { pub struct AssociatedTypeBinding { /// The name of the associated type. pub name: Name, + /// The generic arguments to the associated type. e.g. For `Trait = &'a T>`, this + /// would be `['a, T]`. + pub args: Option>, /// The type bound to this associated type (in `Item = T`, this would be the /// `T`). This can be `None` if there are bounds instead. pub type_ref: Option, diff --git a/crates/hir-def/src/path/lower.rs b/crates/hir-def/src/path/lower.rs index 0428f1a398b1a..cfa3a6baaf8b4 100644 --- a/crates/hir-def/src/path/lower.rs +++ b/crates/hir-def/src/path/lower.rs @@ -163,6 +163,10 @@ pub(super) fn lower_generic_args( ast::GenericArg::AssocTypeArg(assoc_type_arg) => { if let Some(name_ref) = assoc_type_arg.name_ref() { let name = name_ref.as_name(); + let args = assoc_type_arg + .generic_arg_list() + .and_then(|args| lower_generic_args(lower_ctx, args)) + .map(Interned::new); let type_ref = assoc_type_arg.ty().map(|it| TypeRef::from_ast(lower_ctx, it)); let bounds = if let Some(l) = assoc_type_arg.type_bound_list() { l.bounds() @@ -171,7 +175,7 @@ pub(super) fn lower_generic_args( } else { Vec::new() }; - bindings.push(AssociatedTypeBinding { name, type_ref, bounds }); + bindings.push(AssociatedTypeBinding { name, args, type_ref, bounds }); } } ast::GenericArg::LifetimeArg(lifetime_arg) => { @@ -214,6 +218,7 @@ fn lower_generic_args_from_fn_path( let type_ref = TypeRef::from_ast_opt(ctx, ret_type.ty()); bindings.push(AssociatedTypeBinding { name: name![Output], + args: None, type_ref: Some(type_ref), bounds: Vec::new(), }); @@ -222,6 +227,7 @@ fn lower_generic_args_from_fn_path( let type_ref = TypeRef::Tuple(Vec::new()); bindings.push(AssociatedTypeBinding { name: name![Output], + args: None, type_ref: Some(type_ref), bounds: Vec::new(), }); diff --git a/crates/hir-ty/src/chalk_ext.rs b/crates/hir-ty/src/chalk_ext.rs index e2099d7e50927..996b42f5bd83c 100644 --- a/crates/hir-ty/src/chalk_ext.rs +++ b/crates/hir-ty/src/chalk_ext.rs @@ -11,9 +11,9 @@ use syntax::SmolStr; use crate::{ db::HirDatabase, from_assoc_type_id, from_chalk_trait_id, from_foreign_def_id, - from_placeholder_idx, to_chalk_trait_id, AdtId, AliasEq, AliasTy, Binders, CallableDefId, - CallableSig, FnPointer, ImplTraitId, Interner, Lifetime, ProjectionTy, QuantifiedWhereClause, - Substitution, TraitRef, Ty, TyBuilder, TyKind, WhereClause, + from_placeholder_idx, to_chalk_trait_id, utils::generics, AdtId, AliasEq, AliasTy, Binders, + CallableDefId, CallableSig, FnPointer, ImplTraitId, Interner, Lifetime, ProjectionTy, + QuantifiedWhereClause, Substitution, TraitRef, Ty, TyBuilder, TyKind, WhereClause, }; pub trait TyExt { @@ -338,10 +338,13 @@ pub trait ProjectionTyExt { impl ProjectionTyExt for ProjectionTy { fn trait_ref(&self, db: &dyn HirDatabase) -> TraitRef { - TraitRef { - trait_id: to_chalk_trait_id(self.trait_(db)), - substitution: self.substitution.clone(), - } + // FIXME: something like `Split` trait from chalk-solve might be nice. + let generics = generics(db.upcast(), from_assoc_type_id(self.associated_ty_id).into()); + let substitution = Substitution::from_iter( + Interner, + self.substitution.iter(Interner).skip(generics.len_self()), + ); + TraitRef { trait_id: to_chalk_trait_id(self.trait_(db)), substitution } } fn trait_(&self, db: &dyn HirDatabase) -> TraitId { diff --git a/crates/hir-ty/src/display.rs b/crates/hir-ty/src/display.rs index 0221f922feb2f..5ad6613263534 100644 --- a/crates/hir-ty/src/display.rs +++ b/crates/hir-ty/src/display.rs @@ -289,16 +289,18 @@ impl HirDisplay for ProjectionTy { return write!(f, "{}", TYPE_HINT_TRUNCATION); } - let trait_ = f.db.trait_data(self.trait_(f.db)); + let trait_ref = self.trait_ref(f.db); write!(f, "<")?; - self.self_type_parameter(f.db).hir_fmt(f)?; - write!(f, " as {}", trait_.name)?; - if self.substitution.len(Interner) > 1 { + fmt_trait_ref(&trait_ref, f, true)?; + write!(f, ">::{}", f.db.type_alias_data(from_assoc_type_id(self.associated_ty_id)).name)?; + let proj_params_count = + self.substitution.len(Interner) - trait_ref.substitution.len(Interner); + let proj_params = &self.substitution.as_slice(Interner)[..proj_params_count]; + if !proj_params.is_empty() { write!(f, "<")?; - f.write_joined(&self.substitution.as_slice(Interner)[1..], ", ")?; + f.write_joined(proj_params, ", ")?; write!(f, ">")?; } - write!(f, ">::{}", f.db.type_alias_data(from_assoc_type_id(self.associated_ty_id)).name)?; Ok(()) } } @@ -641,9 +643,12 @@ impl HirDisplay for Ty { // Use placeholder associated types when the target is test (https://rust-lang.github.io/chalk/book/clauses/type_equality.html#placeholder-associated-types) if f.display_target.is_test() { write!(f, "{}::{}", trait_.name, type_alias_data.name)?; + // Note that the generic args for the associated type come before those for the + // trait (including the self type). + // FIXME: reconsider the generic args order upon formatting? if parameters.len(Interner) > 0 { write!(f, "<")?; - f.write_joined(&*parameters.as_slice(Interner), ", ")?; + f.write_joined(parameters.as_slice(Interner), ", ")?; write!(f, ">")?; } } else { @@ -972,9 +977,20 @@ fn write_bounds_like_dyn_trait( angle_open = true; } if let AliasTy::Projection(proj) = alias { - let type_alias = - f.db.type_alias_data(from_assoc_type_id(proj.associated_ty_id)); - write!(f, "{} = ", type_alias.name)?; + let assoc_ty_id = from_assoc_type_id(proj.associated_ty_id); + let type_alias = f.db.type_alias_data(assoc_ty_id); + write!(f, "{}", type_alias.name)?; + + let proj_arg_count = generics(f.db.upcast(), assoc_ty_id.into()).len_self(); + if proj_arg_count > 0 { + write!(f, "<")?; + f.write_joined( + &proj.substitution.as_slice(Interner)[..proj_arg_count], + ", ", + )?; + write!(f, ">")?; + } + write!(f, " = ")?; } ty.hir_fmt(f)?; } diff --git a/crates/hir-ty/src/infer/path.rs b/crates/hir-ty/src/infer/path.rs index 7a4754cdc7bb8..ebe9d6fb5e014 100644 --- a/crates/hir-ty/src/infer/path.rs +++ b/crates/hir-ty/src/infer/path.rs @@ -157,7 +157,7 @@ impl<'a> InferenceContext<'a> { remaining_segments_for_ty, true, ); - if let TyKind::Error = ty.kind(Interner) { + if ty.is_unknown() { return None; } diff --git a/crates/hir-ty/src/infer/unify.rs b/crates/hir-ty/src/infer/unify.rs index b00e3216b2d2c..12f45f00f9c4d 100644 --- a/crates/hir-ty/src/infer/unify.rs +++ b/crates/hir-ty/src/infer/unify.rs @@ -340,8 +340,8 @@ impl<'a> InferenceTable<'a> { self.resolve_with_fallback(t, &|_, _, d, _| d) } - /// Unify two types and register new trait goals that arise from that. - pub(crate) fn unify(&mut self, ty1: &Ty, ty2: &Ty) -> bool { + /// Unify two relatable values (e.g. `Ty`) and register new trait goals that arise from that. + pub(crate) fn unify>(&mut self, ty1: &T, ty2: &T) -> bool { let result = match self.try_unify(ty1, ty2) { Ok(r) => r, Err(_) => return false, @@ -350,9 +350,13 @@ impl<'a> InferenceTable<'a> { true } - /// Unify two types and return new trait goals arising from it, so the + /// Unify two relatable values (e.g. `Ty`) and return new trait goals arising from it, so the /// caller needs to deal with them. - pub(crate) fn try_unify>(&mut self, t1: &T, t2: &T) -> InferResult<()> { + pub(crate) fn try_unify>( + &mut self, + t1: &T, + t2: &T, + ) -> InferResult<()> { match self.var_unification_table.relate( Interner, &self.db, diff --git a/crates/hir-ty/src/lib.rs b/crates/hir-ty/src/lib.rs index c4b700cbce6db..42c3b58d5ada5 100644 --- a/crates/hir-ty/src/lib.rs +++ b/crates/hir-ty/src/lib.rs @@ -81,7 +81,20 @@ pub type PlaceholderIndex = chalk_ir::PlaceholderIndex; pub type VariableKind = chalk_ir::VariableKind; pub type VariableKinds = chalk_ir::VariableKinds; pub type CanonicalVarKinds = chalk_ir::CanonicalVarKinds; +/// Represents generic parameters and an item bound by them. When the item has parent, the binders +/// also contain the generic parameters for its parent. See chalk's documentation for details. +/// +/// One thing to keep in mind when working with `Binders` (and `Substitution`s, which represent +/// generic arguments) in rust-analyzer is that the ordering within *is* significant - the generic +/// parameters/arguments for an item MUST come before those for its parent. This is to facilitate +/// the integration with chalk-solve, which mildly puts constraints as such. See #13335 for its +/// motivation in detail. pub type Binders = chalk_ir::Binders; +/// Interned list of generic arguments for an item. When an item has parent, the `Substitution` for +/// it contains generic arguments for both its parent and itself. See chalk's documentation for +/// details. +/// +/// See `Binders` for the constraint on the ordering. pub type Substitution = chalk_ir::Substitution; pub type GenericArg = chalk_ir::GenericArg; pub type GenericArgData = chalk_ir::GenericArgData; @@ -124,14 +137,6 @@ pub type ConstrainedSubst = chalk_ir::ConstrainedSubst; pub type Guidance = chalk_solve::Guidance; pub type WhereClause = chalk_ir::WhereClause; -// FIXME: get rid of this -pub fn subst_prefix(s: &Substitution, n: usize) -> Substitution { - Substitution::from_iter( - Interner, - s.as_slice(Interner)[..std::cmp::min(s.len(Interner), n)].iter().cloned(), - ) -} - /// Return an index of a parameter in the generic type parameter list by it's id. pub fn param_idx(db: &dyn HirDatabase, id: TypeOrConstParamId) -> Option { generics(db.upcast(), id.parent).param_idx(id) @@ -382,7 +387,6 @@ pub(crate) fn fold_tys_and_consts + TypeFold pub fn replace_errors_with_variables(t: &T) -> Canonical where T: HasInterner + TypeFoldable + Clone, - T: HasInterner, { use chalk_ir::{ fold::{FallibleTypeFolder, TypeSuperFoldable}, diff --git a/crates/hir-ty/src/lower.rs b/crates/hir-ty/src/lower.rs index 223d705b157b3..22a85cf154587 100644 --- a/crates/hir-ty/src/lower.rs +++ b/crates/hir-ty/src/lower.rs @@ -447,12 +447,31 @@ impl<'a> TyLoweringContext<'a> { .db .trait_data(trait_ref.hir_trait_id()) .associated_type_by_name(segment.name); + match found { Some(associated_ty) => { - // FIXME handle type parameters on the segment + // FIXME: `substs_from_path_segment()` pushes `TyKind::Error` for every parent + // generic params. It's inefficient to splice the `Substitution`s, so we may want + // that method to optionally take parent `Substitution` as we already know them at + // this point (`trait_ref.substitution`). + let substitution = self.substs_from_path_segment( + segment, + Some(associated_ty.into()), + false, + None, + ); + let len_self = + generics(self.db.upcast(), associated_ty.into()).len_self(); + let substitution = Substitution::from_iter( + Interner, + substitution + .iter(Interner) + .take(len_self) + .chain(trait_ref.substitution.iter(Interner)), + ); TyKind::Alias(AliasTy::Projection(ProjectionTy { associated_ty_id: to_assoc_type_id(associated_ty), - substitution: trait_ref.substitution, + substitution, })) .intern(Interner) } @@ -590,36 +609,48 @@ impl<'a> TyLoweringContext<'a> { res, Some(segment.name.clone()), move |name, t, associated_ty| { - if name == segment.name { - let substs = match self.type_param_mode { - ParamLoweringMode::Placeholder => { - // if we're lowering to placeholders, we have to put - // them in now - let generics = generics( - self.db.upcast(), - self.resolver - .generic_def() - .expect("there should be generics if there's a generic param"), - ); - let s = generics.placeholder_subst(self.db); - s.apply(t.substitution.clone(), Interner) - } - ParamLoweringMode::Variable => t.substitution.clone(), - }; - // We need to shift in the bound vars, since - // associated_type_shorthand_candidates does not do that - let substs = substs.shifted_in_from(Interner, self.in_binders); - // FIXME handle type parameters on the segment - Some( - TyKind::Alias(AliasTy::Projection(ProjectionTy { - associated_ty_id: to_assoc_type_id(associated_ty), - substitution: substs, - })) - .intern(Interner), - ) - } else { - None + if name != segment.name { + return None; } + + // FIXME: `substs_from_path_segment()` pushes `TyKind::Error` for every parent + // generic params. It's inefficient to splice the `Substitution`s, so we may want + // that method to optionally take parent `Substitution` as we already know them at + // this point (`t.substitution`). + let substs = self.substs_from_path_segment( + segment.clone(), + Some(associated_ty.into()), + false, + None, + ); + + let len_self = generics(self.db.upcast(), associated_ty.into()).len_self(); + + let substs = Substitution::from_iter( + Interner, + substs.iter(Interner).take(len_self).chain(t.substitution.iter(Interner)), + ); + + let substs = match self.type_param_mode { + ParamLoweringMode::Placeholder => { + // if we're lowering to placeholders, we have to put + // them in now + let generics = generics(self.db.upcast(), def); + let s = generics.placeholder_subst(self.db); + s.apply(substs, Interner) + } + ParamLoweringMode::Variable => substs, + }; + // We need to shift in the bound vars, since + // associated_type_shorthand_candidates does not do that + let substs = substs.shifted_in_from(Interner, self.in_binders); + Some( + TyKind::Alias(AliasTy::Projection(ProjectionTy { + associated_ty_id: to_assoc_type_id(associated_ty), + substitution: substs, + })) + .intern(Interner), + ) }, ); @@ -777,7 +808,15 @@ impl<'a> TyLoweringContext<'a> { // handle defaults. In expression or pattern path segments without // explicitly specified type arguments, missing type arguments are inferred // (i.e. defaults aren't used). - if !infer_args || had_explicit_args { + // Generic parameters for associated types are not supposed to have defaults, so we just + // ignore them. + let is_assoc_ty = if let GenericDefId::TypeAliasId(id) = def { + let container = id.lookup(self.db.upcast()).container; + matches!(container, ItemContainerId::TraitId(_)) + } else { + false + }; + if !is_assoc_ty && (!infer_args || had_explicit_args) { let defaults = self.db.generic_defaults(def); assert_eq!(total_len, defaults.len()); let parent_from = item_len - substs.len(); @@ -966,9 +1005,28 @@ impl<'a> TyLoweringContext<'a> { None => return SmallVec::new(), Some(t) => t, }; + // FIXME: `substs_from_path_segment()` pushes `TyKind::Error` for every parent + // generic params. It's inefficient to splice the `Substitution`s, so we may want + // that method to optionally take parent `Substitution` as we already know them at + // this point (`super_trait_ref.substitution`). + let substitution = self.substs_from_path_segment( + // FIXME: This is hack. We shouldn't really build `PathSegment` directly. + PathSegment { name: &binding.name, args_and_bindings: binding.args.as_deref() }, + Some(associated_ty.into()), + false, // this is not relevant + Some(super_trait_ref.self_type_parameter(Interner)), + ); + let self_params = generics(self.db.upcast(), associated_ty.into()).len_self(); + let substitution = Substitution::from_iter( + Interner, + substitution + .iter(Interner) + .take(self_params) + .chain(super_trait_ref.substitution.iter(Interner)), + ); let projection_ty = ProjectionTy { associated_ty_id: to_assoc_type_id(associated_ty), - substitution: super_trait_ref.substitution, + substitution, }; let mut preds: SmallVec<[_; 1]> = SmallVec::with_capacity( binding.type_ref.as_ref().map_or(0, |_| 1) + binding.bounds.len(), diff --git a/crates/hir-ty/src/method_resolution.rs b/crates/hir-ty/src/method_resolution.rs index 3a1a3f4fdeb3b..50859475e1d94 100644 --- a/crates/hir-ty/src/method_resolution.rs +++ b/crates/hir-ty/src/method_resolution.rs @@ -22,10 +22,10 @@ use crate::{ from_foreign_def_id, infer::{unify::InferenceTable, Adjust, Adjustment, AutoBorrow, OverloadedDeref, PointerCast}, primitive::{FloatTy, IntTy, UintTy}, - static_lifetime, + static_lifetime, to_chalk_trait_id, utils::all_super_traits, AdtId, Canonical, CanonicalVarKinds, DebruijnIndex, ForeignDefId, InEnvironment, Interner, - Scalar, TraitEnvironment, TraitRefExt, Ty, TyBuilder, TyExt, TyKind, + Scalar, Substitution, TraitEnvironment, TraitRef, TraitRefExt, Ty, TyBuilder, TyExt, TyKind, }; /// This is used as a key for indexing impls. @@ -624,52 +624,76 @@ pub(crate) fn iterate_method_candidates( slot } +/// Looks up the impl method that actually runs for the trait method `func`. +/// +/// Returns `func` if it's not a method defined in a trait or the lookup failed. pub fn lookup_impl_method( - self_ty: &Ty, db: &dyn HirDatabase, env: Arc, - trait_: TraitId, + func: FunctionId, + fn_subst: Substitution, +) -> FunctionId { + let trait_id = match func.lookup(db.upcast()).container { + ItemContainerId::TraitId(id) => id, + _ => return func, + }; + let trait_params = db.generic_params(trait_id.into()).type_or_consts.len(); + let fn_params = fn_subst.len(Interner) - trait_params; + let trait_ref = TraitRef { + trait_id: to_chalk_trait_id(trait_id), + substitution: Substitution::from_iter(Interner, fn_subst.iter(Interner).skip(fn_params)), + }; + + let name = &db.function_data(func).name; + lookup_impl_method_for_trait_ref(trait_ref, db, env, name).unwrap_or(func) +} + +fn lookup_impl_method_for_trait_ref( + trait_ref: TraitRef, + db: &dyn HirDatabase, + env: Arc, name: &Name, ) -> Option { - let self_ty_fp = TyFingerprint::for_trait_impl(self_ty)?; - let trait_impls = db.trait_impls_in_deps(env.krate); - let impls = trait_impls.for_trait_and_self_ty(trait_, self_ty_fp); - let mut table = InferenceTable::new(db, env.clone()); - find_matching_impl(impls, &mut table, &self_ty).and_then(|data| { - data.items.iter().find_map(|it| match it { - AssocItemId::FunctionId(f) => (db.function_data(*f).name == *name).then(|| *f), - _ => None, - }) + let self_ty = trait_ref.self_type_parameter(Interner); + let self_ty_fp = TyFingerprint::for_trait_impl(&self_ty)?; + let impls = db.trait_impls_in_deps(env.krate); + let impls = impls.for_trait_and_self_ty(trait_ref.hir_trait_id(), self_ty_fp); + + let table = InferenceTable::new(db, env); + + let impl_data = find_matching_impl(impls, table, trait_ref)?; + impl_data.items.iter().find_map(|it| match it { + AssocItemId::FunctionId(f) => (db.function_data(*f).name == *name).then(|| *f), + _ => None, }) } fn find_matching_impl( mut impls: impl Iterator, - table: &mut InferenceTable<'_>, - self_ty: &Ty, + mut table: InferenceTable<'_>, + actual_trait_ref: TraitRef, ) -> Option> { let db = table.db; loop { let impl_ = impls.next()?; let r = table.run_in_snapshot(|table| { let impl_data = db.impl_data(impl_); - let substs = + let impl_substs = TyBuilder::subst_for_def(db, impl_, None).fill_with_inference_vars(table).build(); - let impl_ty = db.impl_self_ty(impl_).substitute(Interner, &substs); - - table - .unify(self_ty, &impl_ty) - .then(|| { - let wh_goals = - crate::chalk_db::convert_where_clauses(db, impl_.into(), &substs) - .into_iter() - .map(|b| b.cast(Interner)); + let trait_ref = db + .impl_trait(impl_) + .expect("non-trait method in find_matching_impl") + .substitute(Interner, &impl_substs); - let goal = crate::Goal::all(Interner, wh_goals); + if !table.unify(&trait_ref, &actual_trait_ref) { + return None; + } - table.try_obligation(goal).map(|_| impl_data) - }) - .flatten() + let wcs = crate::chalk_db::convert_where_clauses(db, impl_.into(), &impl_substs) + .into_iter() + .map(|b| b.cast(Interner)); + let goal = crate::Goal::all(Interner, wcs); + table.try_obligation(goal).map(|_| impl_data) }); if r.is_some() { break r; @@ -1214,7 +1238,7 @@ fn is_valid_fn_candidate( let expected_receiver = sig.map(|s| s.params()[0].clone()).substitute(Interner, &fn_subst); - check_that!(table.unify(&receiver_ty, &expected_receiver)); + check_that!(table.unify(receiver_ty, &expected_receiver)); } if let ItemContainerId::ImplId(impl_id) = container { diff --git a/crates/hir-ty/src/tests/display_source_code.rs b/crates/hir-ty/src/tests/display_source_code.rs index 8a8ff08cfe8cd..425432479e815 100644 --- a/crates/hir-ty/src/tests/display_source_code.rs +++ b/crates/hir-ty/src/tests/display_source_code.rs @@ -196,3 +196,34 @@ fn test( "#, ); } + +#[test] +fn projection_type_correct_arguments_order() { + check_types_source_code( + r#" +trait Foo { + type Assoc; +} +fn f>(a: T::Assoc) { + a; + //^ >::Assoc +} +"#, + ); +} + +#[test] +fn generic_associated_type_binding_in_impl_trait() { + check_types_source_code( + r#" +//- minicore: sized +trait Foo { + type Assoc; +} +fn f(a: impl Foo = i32>) { + a; + //^ impl Foo = i32> +} + "#, + ); +} diff --git a/crates/hir-ty/src/tests/traits.rs b/crates/hir-ty/src/tests/traits.rs index 555b6972fb71e..7d42b8b9bc8d8 100644 --- a/crates/hir-ty/src/tests/traits.rs +++ b/crates/hir-ty/src/tests/traits.rs @@ -3963,3 +3963,124 @@ fn g(t: &(dyn T + Send)) { "#, ); } + +#[test] +fn gats_in_path() { + check_types( + r#" +//- minicore: deref +use core::ops::Deref; +trait PointerFamily { + type Pointer: Deref; +} + +fn f(p: P::Pointer) { + let a = *p; + //^ i32 +} +fn g(p:

::Pointer) { + let a = *p; + //^ i32 +} + "#, + ); +} + +#[test] +fn gats_with_impl_trait() { + // FIXME: the last function (`fn i()`) is not valid Rust as of this writing because you cannot + // specify the same associated type multiple times even if their arguments are different (c.f. + // `fn h()`, which is valid). Reconsider how to treat these invalid types. + check_types( + r#" +//- minicore: deref +use core::ops::Deref; + +trait Trait { + type Assoc: Deref; + fn get(&self) -> Self::Assoc; +} + +fn f(v: impl Trait) { + let a = v.get::().deref(); + //^ &i32 + let a = v.get::().deref(); + //^ &T +} +fn g<'a, T: 'a>(v: impl Trait = &'a T>) { + let a = v.get::(); + //^ &T + let a = v.get::<()>(); + //^ Trait::Assoc<(), impl Trait = &T>> +} +fn h<'a>(v: impl Trait = &'a i32> + Trait = &'a i64>) { + let a = v.get::(); + //^ &i32 + let a = v.get::(); + //^ &i64 +} +fn i<'a>(v: impl Trait = &'a i32, Assoc = &'a i64>) { + let a = v.get::(); + //^ &i32 + let a = v.get::(); + //^ &i64 +} + "#, + ); +} + +#[test] +fn gats_with_dyn() { + // This test is here to keep track of how we infer things despite traits with GATs being not + // object-safe currently. + // FIXME: reconsider how to treat these invalid types. + check_infer_with_mismatches( + r#" +//- minicore: deref +use core::ops::Deref; + +trait Trait { + type Assoc: Deref; + fn get(&self) -> Self::Assoc; +} + +fn f<'a>(v: &dyn Trait = &'a i32>) { + v.get::().deref(); +} + "#, + expect![[r#" + 90..94 'self': &Self + 127..128 'v': &(dyn Trait = &i32>) + 164..195 '{ ...f(); }': () + 170..171 'v': &(dyn Trait = &i32>) + 170..184 'v.get::()': &i32 + 170..192 'v.get:...eref()': &i32 + "#]], + ); +} + +#[test] +fn gats_in_associated_type_binding() { + check_types( + r#" +trait Trait { + type Assoc; + fn get(&self) -> Self::Assoc; +} + +fn f(t: T) +where + T: Trait = u32>, + T: Trait = usize>, +{ + let a = t.get::(); + //^ u32 + let a = t.get::(); + //^ usize + let a = t.get::<()>(); + //^ Trait::Assoc<(), T> +} + + "#, + ); +} diff --git a/crates/hir-ty/src/tls.rs b/crates/hir-ty/src/tls.rs index 547850b021c3c..92711a24fe39f 100644 --- a/crates/hir-ty/src/tls.rs +++ b/crates/hir-ty/src/tls.rs @@ -5,7 +5,7 @@ use itertools::Itertools; use crate::{ chalk_db, db::HirDatabase, from_assoc_type_id, from_chalk_trait_id, mapping::from_chalk, - CallableDefId, Interner, + CallableDefId, Interner, ProjectionTyExt, }; use hir_def::{AdtId, ItemContainerId, Lookup, TypeAliasId}; @@ -63,17 +63,31 @@ impl DebugContext<'_> { ItemContainerId::TraitId(t) => t, _ => panic!("associated type not in trait"), }; - let trait_data = self.0.trait_data(trait_); - let params = projection_ty.substitution.as_slice(Interner); - write!(fmt, "<{:?} as {}", ¶ms[0], trait_data.name,)?; - if params.len() > 1 { + let trait_name = &self.0.trait_data(trait_).name; + let trait_ref = projection_ty.trait_ref(self.0); + let trait_params = trait_ref.substitution.as_slice(Interner); + let self_ty = trait_ref.self_type_parameter(Interner); + write!(fmt, "<{:?} as {}", self_ty, trait_name)?; + if trait_params.len() > 1 { + write!( + fmt, + "<{}>", + trait_params[1..].iter().format_with(", ", |x, f| f(&format_args!("{:?}", x))), + )?; + } + write!(fmt, ">::{}", type_alias_data.name)?; + + let proj_params_count = projection_ty.substitution.len(Interner) - trait_params.len(); + let proj_params = &projection_ty.substitution.as_slice(Interner)[..proj_params_count]; + if !proj_params.is_empty() { write!( fmt, "<{}>", - ¶ms[1..].iter().format_with(", ", |x, f| f(&format_args!("{:?}", x))), + proj_params.iter().format_with(", ", |x, f| f(&format_args!("{:?}", x))), )?; } - write!(fmt, ">::{}", type_alias_data.name) + + Ok(()) } pub(crate) fn debug_fn_def_id( diff --git a/crates/hir/src/source_analyzer.rs b/crates/hir/src/source_analyzer.rs index 07bae2b38c796..f86c571005367 100644 --- a/crates/hir/src/source_analyzer.rs +++ b/crates/hir/src/source_analyzer.rs @@ -270,7 +270,7 @@ impl SourceAnalyzer { let expr_id = self.expr_id(db, &call.clone().into())?; let (f_in_trait, substs) = self.infer.as_ref()?.method_resolution(expr_id)?; - Some(self.resolve_impl_method_or_trait_def(db, f_in_trait, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, f_in_trait, substs)) } pub(crate) fn resolve_await_to_poll( @@ -311,7 +311,7 @@ impl SourceAnalyzer { // 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(); - Some(self.resolve_impl_method_or_trait_def(db, poll_fn, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, poll_fn, substs)) } pub(crate) fn resolve_prefix_expr( @@ -331,7 +331,7 @@ impl SourceAnalyzer { // 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(); - Some(self.resolve_impl_method_or_trait_def(db, op_fn, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, op_fn, substs)) } pub(crate) fn resolve_index_expr( @@ -351,7 +351,7 @@ impl SourceAnalyzer { .push(base_ty.clone()) .push(index_ty.clone()) .build(); - Some(self.resolve_impl_method_or_trait_def(db, op_fn, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, op_fn, substs)) } pub(crate) fn resolve_bin_expr( @@ -372,7 +372,7 @@ impl SourceAnalyzer { .push(rhs.clone()) .build(); - Some(self.resolve_impl_method_or_trait_def(db, op_fn, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, op_fn, substs)) } pub(crate) fn resolve_try_expr( @@ -392,7 +392,7 @@ impl SourceAnalyzer { // doesn't have any generic parameters, so we skip building another subst for `branch()`. let substs = hir_ty::TyBuilder::subst_for_def(db, op_trait, None).push(ty.clone()).build(); - Some(self.resolve_impl_method_or_trait_def(db, op_fn, &substs)) + Some(self.resolve_impl_method_or_trait_def(db, op_fn, substs)) } pub(crate) fn resolve_field( @@ -487,9 +487,9 @@ impl SourceAnalyzer { let mut prefer_value_ns = false; let resolved = (|| { + let infer = self.infer.as_deref()?; if let Some(path_expr) = parent().and_then(ast::PathExpr::cast) { let expr_id = self.expr_id(db, &path_expr.into())?; - let infer = self.infer.as_ref()?; if let Some(assoc) = infer.assoc_resolutions_for_expr(expr_id) { let assoc = match assoc { AssocItemId::FunctionId(f_in_trait) => { @@ -497,9 +497,12 @@ impl SourceAnalyzer { None => assoc, Some(func_ty) => { if let TyKind::FnDef(_fn_def, subs) = func_ty.kind(Interner) { - self.resolve_impl_method(db, f_in_trait, subs) - .map(AssocItemId::FunctionId) - .unwrap_or(assoc) + self.resolve_impl_method_or_trait_def( + db, + f_in_trait, + subs.clone(), + ) + .into() } else { assoc } @@ -520,18 +523,18 @@ impl SourceAnalyzer { prefer_value_ns = true; } else if let Some(path_pat) = parent().and_then(ast::PathPat::cast) { let pat_id = self.pat_id(&path_pat.into())?; - if let Some(assoc) = self.infer.as_ref()?.assoc_resolutions_for_pat(pat_id) { + if let Some(assoc) = infer.assoc_resolutions_for_pat(pat_id) { return Some(PathResolution::Def(AssocItem::from(assoc).into())); } if let Some(VariantId::EnumVariantId(variant)) = - self.infer.as_ref()?.variant_resolution_for_pat(pat_id) + infer.variant_resolution_for_pat(pat_id) { return Some(PathResolution::Def(ModuleDef::Variant(variant.into()))); } } else if let Some(rec_lit) = parent().and_then(ast::RecordExpr::cast) { let expr_id = self.expr_id(db, &rec_lit.into())?; if let Some(VariantId::EnumVariantId(variant)) = - self.infer.as_ref()?.variant_resolution_for_expr(expr_id) + infer.variant_resolution_for_expr(expr_id) { return Some(PathResolution::Def(ModuleDef::Variant(variant.into()))); } @@ -541,8 +544,7 @@ impl SourceAnalyzer { || parent().and_then(ast::TupleStructPat::cast).map(ast::Pat::from); if let Some(pat) = record_pat.or_else(tuple_struct_pat) { let pat_id = self.pat_id(&pat)?; - let variant_res_for_pat = - self.infer.as_ref()?.variant_resolution_for_pat(pat_id); + let variant_res_for_pat = infer.variant_resolution_for_pat(pat_id); if let Some(VariantId::EnumVariantId(variant)) = variant_res_for_pat { return Some(PathResolution::Def(ModuleDef::Variant(variant.into()))); } @@ -780,37 +782,22 @@ impl SourceAnalyzer { false } - fn resolve_impl_method( + fn resolve_impl_method_or_trait_def( &self, db: &dyn HirDatabase, func: FunctionId, - substs: &Substitution, - ) -> Option { - let impled_trait = match func.lookup(db.upcast()).container { - ItemContainerId::TraitId(trait_id) => trait_id, - _ => return None, - }; - if substs.is_empty(Interner) { - return None; - } - let self_ty = substs.at(Interner, 0).ty(Interner)?; + substs: Substitution, + ) -> FunctionId { let krate = self.resolver.krate(); - let trait_env = self.resolver.body_owner()?.as_generic_def_id().map_or_else( + let owner = match self.resolver.body_owner() { + Some(it) => it, + None => return func, + }; + let env = owner.as_generic_def_id().map_or_else( || Arc::new(hir_ty::TraitEnvironment::empty(krate)), |d| db.trait_environment(d), ); - - let fun_data = db.function_data(func); - method_resolution::lookup_impl_method(self_ty, db, trait_env, impled_trait, &fun_data.name) - } - - fn resolve_impl_method_or_trait_def( - &self, - db: &dyn HirDatabase, - func: FunctionId, - substs: &Substitution, - ) -> FunctionId { - self.resolve_impl_method(db, func, substs).unwrap_or(func) + method_resolution::lookup_impl_method(db, env, func, substs) } fn lang_trait_fn( diff --git a/crates/ide/src/goto_definition.rs b/crates/ide/src/goto_definition.rs index d0be1b3f40479..f97c67b144ac1 100644 --- a/crates/ide/src/goto_definition.rs +++ b/crates/ide/src/goto_definition.rs @@ -1834,4 +1834,86 @@ fn f() { "#, ); } + + #[test] + fn goto_bin_op_multiple_impl() { + check( + r#" +//- minicore: add +struct S; +impl core::ops::Add for S { + fn add( + //^^^ + ) {} +} +impl core::ops::Add for S { + fn add( + ) {} +} + +fn f() { + S +$0 S +} +"#, + ); + + check( + r#" +//- minicore: add +struct S; +impl core::ops::Add for S { + fn add( + ) {} +} +impl core::ops::Add for S { + fn add( + //^^^ + ) {} +} + +fn f() { + S +$0 0usize +} +"#, + ); + } + + #[test] + fn path_call_multiple_trait_impl() { + check( + r#" +trait Trait { + fn f(_: T); +} +impl Trait for usize { + fn f(_: i32) {} + //^ +} +impl Trait for usize { + fn f(_: i64) {} +} +fn main() { + usize::f$0(0i32); +} +"#, + ); + + check( + r#" +trait Trait { + fn f(_: T); +} +impl Trait for usize { + fn f(_: i32) {} +} +impl Trait for usize { + fn f(_: i64) {} + //^ +} +fn main() { + usize::f$0(0i64); +} +"#, + ) + } } diff --git a/crates/rust-analyzer/Cargo.toml b/crates/rust-analyzer/Cargo.toml index 5445028536cb5..7ae5324ab051a 100644 --- a/crates/rust-analyzer/Cargo.toml +++ b/crates/rust-analyzer/Cargo.toml @@ -23,7 +23,7 @@ crossbeam-channel = "0.5.5" dissimilar = "1.0.4" itertools = "0.10.5" scip = "0.1.1" -lsp-types = { version = "0.93.1", features = ["proposed"] } +lsp-types = { version = "=0.93.2", features = ["proposed"] } parking_lot = "0.12.1" xflags = "0.3.0" oorandom = "11.1.3" diff --git a/crates/rust-analyzer/src/bin/main.rs b/crates/rust-analyzer/src/bin/main.rs index eabfcf1944dfd..7bf595d2a45f5 100644 --- a/crates/rust-analyzer/src/bin/main.rs +++ b/crates/rust-analyzer/src/bin/main.rs @@ -11,7 +11,7 @@ use std::{env, fs, path::Path, process}; use lsp_server::Connection; use project_model::ProjectManifest; -use rust_analyzer::{cli::flags, config::Config, from_json, lsp_ext::supports_utf8, Result}; +use rust_analyzer::{cli::flags, config::Config, from_json, Result}; use vfs::AbsPathBuf; #[cfg(all(feature = "mimalloc"))] @@ -191,11 +191,7 @@ fn run_server() -> Result<()> { name: String::from("rust-analyzer"), version: Some(rust_analyzer::version().to_string()), }), - offset_encoding: if supports_utf8(config.caps()) { - Some("utf-8".to_string()) - } else { - None - }, + offset_encoding: None, }; let initialize_result = serde_json::to_value(initialize_result).unwrap(); diff --git a/crates/rust-analyzer/src/caps.rs b/crates/rust-analyzer/src/caps.rs index cda95cd8626c9..723b888d9abc8 100644 --- a/crates/rust-analyzer/src/caps.rs +++ b/crates/rust-analyzer/src/caps.rs @@ -6,19 +6,25 @@ use lsp_types::{ FileOperationFilter, FileOperationPattern, FileOperationPatternKind, FileOperationRegistrationOptions, FoldingRangeProviderCapability, HoverProviderCapability, ImplementationProviderCapability, InlayHintOptions, InlayHintServerCapabilities, OneOf, - RenameOptions, SaveOptions, SelectionRangeProviderCapability, SemanticTokensFullOptions, - SemanticTokensLegend, SemanticTokensOptions, ServerCapabilities, SignatureHelpOptions, - TextDocumentSyncCapability, TextDocumentSyncKind, TextDocumentSyncOptions, - TypeDefinitionProviderCapability, WorkDoneProgressOptions, + PositionEncodingKind, RenameOptions, SaveOptions, SelectionRangeProviderCapability, + SemanticTokensFullOptions, SemanticTokensLegend, SemanticTokensOptions, ServerCapabilities, + SignatureHelpOptions, TextDocumentSyncCapability, TextDocumentSyncKind, + TextDocumentSyncOptions, TypeDefinitionProviderCapability, WorkDoneProgressOptions, WorkspaceFileOperationsServerCapabilities, WorkspaceServerCapabilities, }; use serde_json::json; use crate::config::{Config, RustfmtConfig}; +use crate::lsp_ext::supports_utf8; use crate::semantic_tokens; pub fn server_capabilities(config: &Config) -> ServerCapabilities { ServerCapabilities { + position_encoding: if supports_utf8(config.caps()) { + Some(PositionEncodingKind::UTF8) + } else { + None + }, text_document_sync: Some(TextDocumentSyncCapability::Options(TextDocumentSyncOptions { open_close: Some(true), change: Some(TextDocumentSyncKind::INCREMENTAL), diff --git a/crates/rust-analyzer/src/cli/lsif.rs b/crates/rust-analyzer/src/cli/lsif.rs index 748306ea57d4e..5ff347b9bd722 100644 --- a/crates/rust-analyzer/src/cli/lsif.rs +++ b/crates/rust-analyzer/src/cli/lsif.rs @@ -20,7 +20,7 @@ use crate::cli::{ load_cargo::{load_workspace, LoadCargoConfig}, Result, }; -use crate::line_index::{LineEndings, LineIndex, OffsetEncoding}; +use crate::line_index::{LineEndings, LineIndex, PositionEncoding}; use crate::to_proto; use crate::version::version; @@ -126,7 +126,7 @@ impl LsifManager<'_> { let line_index = self.db.line_index(file_id); let line_index = LineIndex { index: line_index, - encoding: OffsetEncoding::Utf16, + encoding: PositionEncoding::Utf16, endings: LineEndings::Unix, }; let range_id = self.add_vertex(lsif::Vertex::Range { @@ -248,7 +248,7 @@ impl LsifManager<'_> { let line_index = self.db.line_index(file_id); let line_index = LineIndex { index: line_index, - encoding: OffsetEncoding::Utf16, + encoding: PositionEncoding::Utf16, endings: LineEndings::Unix, }; let result = folds diff --git a/crates/rust-analyzer/src/cli/scip.rs b/crates/rust-analyzer/src/cli/scip.rs index 8b77ccde0ee4a..16298862b50f3 100644 --- a/crates/rust-analyzer/src/cli/scip.rs +++ b/crates/rust-analyzer/src/cli/scip.rs @@ -5,7 +5,7 @@ use std::{ time::Instant, }; -use crate::line_index::{LineEndings, LineIndex, OffsetEncoding}; +use crate::line_index::{LineEndings, LineIndex, PositionEncoding}; use hir::Name; use ide::{ LineCol, MonikerDescriptorKind, StaticIndex, StaticIndexedFile, TextRange, TokenId, @@ -91,7 +91,7 @@ impl flags::Scip { let line_index = LineIndex { index: db.line_index(file_id), - encoding: OffsetEncoding::Utf8, + encoding: PositionEncoding::Utf8, endings: LineEndings::Unix, }; diff --git a/crates/rust-analyzer/src/config.rs b/crates/rust-analyzer/src/config.rs index 85322f12a834c..1ed8f2bb5f35a 100644 --- a/crates/rust-analyzer/src/config.rs +++ b/crates/rust-analyzer/src/config.rs @@ -32,7 +32,7 @@ use vfs::AbsPathBuf; use crate::{ caps::completion_item_edit_resolve, diagnostics::DiagnosticsMapConfig, - line_index::OffsetEncoding, + line_index::PositionEncoding, lsp_ext::{self, supports_utf8, WorkspaceSymbolSearchKind, WorkspaceSymbolSearchScope}, }; @@ -948,11 +948,11 @@ impl Config { .is_some() } - pub fn offset_encoding(&self) -> OffsetEncoding { + pub fn position_encoding(&self) -> PositionEncoding { if supports_utf8(&self.caps) { - OffsetEncoding::Utf8 + PositionEncoding::Utf8 } else { - OffsetEncoding::Utf16 + PositionEncoding::Utf16 } } diff --git a/crates/rust-analyzer/src/diagnostics/to_proto.rs b/crates/rust-analyzer/src/diagnostics/to_proto.rs index 74689fd8757f8..189ac2fbf5339 100644 --- a/crates/rust-analyzer/src/diagnostics/to_proto.rs +++ b/crates/rust-analyzer/src/diagnostics/to_proto.rs @@ -8,7 +8,7 @@ use stdx::format_to; use vfs::{AbsPath, AbsPathBuf}; use crate::{ - global_state::GlobalStateSnapshot, line_index::OffsetEncoding, lsp_ext, + global_state::GlobalStateSnapshot, line_index::PositionEncoding, lsp_ext, to_proto::url_from_abs_path, }; @@ -66,17 +66,17 @@ fn location( let uri = url_from_abs_path(&file_name); let range = { - let offset_encoding = snap.config.offset_encoding(); + let position_encoding = snap.config.position_encoding(); lsp_types::Range::new( - position(&offset_encoding, span, span.line_start, span.column_start), - position(&offset_encoding, span, span.line_end, span.column_end), + position(&position_encoding, span, span.line_start, span.column_start), + position(&position_encoding, span, span.line_end, span.column_end), ) }; lsp_types::Location::new(uri, range) } fn position( - offset_encoding: &OffsetEncoding, + position_encoding: &PositionEncoding, span: &DiagnosticSpan, line_offset: usize, column_offset: usize, @@ -93,9 +93,9 @@ fn position( }; } let mut char_offset = 0; - let len_func = match offset_encoding { - OffsetEncoding::Utf8 => char::len_utf8, - OffsetEncoding::Utf16 => char::len_utf16, + let len_func = match position_encoding { + PositionEncoding::Utf8 => char::len_utf8, + PositionEncoding::Utf16 => char::len_utf16, }; for c in line.text.chars() { char_offset += 1; diff --git a/crates/rust-analyzer/src/from_proto.rs b/crates/rust-analyzer/src/from_proto.rs index f2db9a2733497..936957bab4882 100644 --- a/crates/rust-analyzer/src/from_proto.rs +++ b/crates/rust-analyzer/src/from_proto.rs @@ -8,7 +8,7 @@ use vfs::AbsPathBuf; use crate::{ from_json, global_state::GlobalStateSnapshot, - line_index::{LineIndex, OffsetEncoding}, + line_index::{LineIndex, PositionEncoding}, lsp_ext, lsp_utils::invalid_params_error, Result, @@ -25,10 +25,10 @@ pub(crate) fn vfs_path(url: &lsp_types::Url) -> Result { pub(crate) fn offset(line_index: &LineIndex, position: lsp_types::Position) -> Result { let line_col = match line_index.encoding { - OffsetEncoding::Utf8 => { + PositionEncoding::Utf8 => { LineCol { line: position.line as u32, col: position.character as u32 } } - OffsetEncoding::Utf16 => { + PositionEncoding::Utf16 => { let line_col = LineColUtf16 { line: position.line as u32, col: position.character as u32 }; line_index.index.to_utf8(line_col) diff --git a/crates/rust-analyzer/src/global_state.rs b/crates/rust-analyzer/src/global_state.rs index 3fb06c31f7ca7..74277ff2e576e 100644 --- a/crates/rust-analyzer/src/global_state.rs +++ b/crates/rust-analyzer/src/global_state.rs @@ -383,7 +383,7 @@ impl GlobalStateSnapshot { pub(crate) fn file_line_index(&self, file_id: FileId) -> Cancellable { let endings = self.vfs.read().1[&file_id]; let index = self.analysis.file_line_index(file_id)?; - let res = LineIndex { index, endings, encoding: self.config.offset_encoding() }; + let res = LineIndex { index, endings, encoding: self.config.position_encoding() }; Ok(res) } diff --git a/crates/rust-analyzer/src/line_index.rs b/crates/rust-analyzer/src/line_index.rs index c116414da01df..0d424b915703a 100644 --- a/crates/rust-analyzer/src/line_index.rs +++ b/crates/rust-analyzer/src/line_index.rs @@ -7,7 +7,7 @@ use std::sync::Arc; -pub enum OffsetEncoding { +pub enum PositionEncoding { Utf8, Utf16, } @@ -15,7 +15,7 @@ pub enum OffsetEncoding { pub(crate) struct LineIndex { pub(crate) index: Arc, pub(crate) endings: LineEndings, - pub(crate) encoding: OffsetEncoding, + pub(crate) encoding: PositionEncoding, } #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash)] diff --git a/crates/rust-analyzer/src/lsp_ext.rs b/crates/rust-analyzer/src/lsp_ext.rs index e61c8b643d2de..8cc5648f3ce0c 100644 --- a/crates/rust-analyzer/src/lsp_ext.rs +++ b/crates/rust-analyzer/src/lsp_ext.rs @@ -3,6 +3,7 @@ use std::{collections::HashMap, path::PathBuf}; use lsp_types::request::Request; +use lsp_types::PositionEncodingKind; use lsp_types::{ notification::Notification, CodeActionKind, DocumentOnTypeFormattingParams, PartialResultParams, Position, Range, TextDocumentIdentifier, WorkDoneProgressParams, @@ -455,7 +456,15 @@ pub(crate) enum CodeLensResolveData { } pub fn supports_utf8(caps: &lsp_types::ClientCapabilities) -> bool { - caps.offset_encoding.as_deref().unwrap_or_default().iter().any(|it| it == "utf-8") + match &caps.general { + Some(general) => general + .position_encodings + .as_deref() + .unwrap_or_default() + .iter() + .any(|it| it == &PositionEncodingKind::UTF8), + _ => false, + } } pub enum MoveItem {} diff --git a/crates/rust-analyzer/src/lsp_utils.rs b/crates/rust-analyzer/src/lsp_utils.rs index b3cea64d4175e..c6a4db9a453ac 100644 --- a/crates/rust-analyzer/src/lsp_utils.rs +++ b/crates/rust-analyzer/src/lsp_utils.rs @@ -6,7 +6,7 @@ use lsp_server::Notification; use crate::{ from_proto, global_state::GlobalState, - line_index::{LineEndings, LineIndex, OffsetEncoding}, + line_index::{LineEndings, LineIndex, PositionEncoding}, LspError, }; @@ -140,7 +140,7 @@ pub(crate) fn apply_document_changes( index: Arc::new(ide::LineIndex::new(old_text)), // We don't care about line endings or offset encoding here. endings: LineEndings::Unix, - encoding: OffsetEncoding::Utf16, + encoding: PositionEncoding::Utf16, }; // The changes we got must be applied sequentially, but can cross lines so we diff --git a/crates/rust-analyzer/src/main_loop.rs b/crates/rust-analyzer/src/main_loop.rs index 2c928a580405c..7d10dc5d15b62 100644 --- a/crates/rust-analyzer/src/main_loop.rs +++ b/crates/rust-analyzer/src/main_loop.rs @@ -607,30 +607,34 @@ impl GlobalState { /// Handles a request. fn on_request(&mut self, req: Request) { - if self.shutdown_requested { - self.respond(lsp_server::Response::new_err( - req.id, - lsp_server::ErrorCode::InvalidRequest as i32, - "Shutdown already requested.".to_owned(), - )); - return; - } + let mut dispatcher = RequestDispatcher { req: Some(req), global_state: self }; + dispatcher.on_sync_mut::(|s, ()| { + s.shutdown_requested = true; + Ok(()) + }); + + if let RequestDispatcher { req: Some(req), global_state: this } = &mut dispatcher { + if this.shutdown_requested { + this.respond(lsp_server::Response::new_err( + req.id.clone(), + lsp_server::ErrorCode::InvalidRequest as i32, + "Shutdown already requested.".to_owned(), + )); + return; + } - // Avoid flashing a bunch of unresolved references during initial load. - if self.workspaces.is_empty() && !self.is_quiescent() { - self.respond(lsp_server::Response::new_err( - req.id, - lsp_server::ErrorCode::ContentModified as i32, - "waiting for cargo metadata or cargo check".to_owned(), - )); - return; + // Avoid flashing a bunch of unresolved references during initial load. + if this.workspaces.is_empty() && !this.is_quiescent() { + this.respond(lsp_server::Response::new_err( + req.id.clone(), + lsp_server::ErrorCode::ContentModified as i32, + "waiting for cargo metadata or cargo check".to_owned(), + )); + return; + } } - RequestDispatcher { req: Some(req), global_state: self } - .on_sync_mut::(|s, ()| { - s.shutdown_requested = true; - Ok(()) - }) + dispatcher .on_sync_mut::(handlers::handle_workspace_reload) .on_sync_mut::(handlers::handle_memory_usage) .on_sync_mut::(handlers::handle_shuffle_crate_graph) diff --git a/crates/rust-analyzer/src/to_proto.rs b/crates/rust-analyzer/src/to_proto.rs index 5936454a7c546..6c84a2069cd57 100644 --- a/crates/rust-analyzer/src/to_proto.rs +++ b/crates/rust-analyzer/src/to_proto.rs @@ -21,7 +21,7 @@ use crate::{ cargo_target_spec::CargoTargetSpec, config::{CallInfoConfig, Config}, global_state::GlobalStateSnapshot, - line_index::{LineEndings, LineIndex, OffsetEncoding}, + line_index::{LineEndings, LineIndex, PositionEncoding}, lsp_ext, lsp_utils::invalid_params_error, semantic_tokens, Result, @@ -30,8 +30,8 @@ use crate::{ pub(crate) fn position(line_index: &LineIndex, offset: TextSize) -> lsp_types::Position { let line_col = line_index.index.line_col(offset); match line_index.encoding { - OffsetEncoding::Utf8 => lsp_types::Position::new(line_col.line, line_col.col), - OffsetEncoding::Utf16 => { + PositionEncoding::Utf8 => lsp_types::Position::new(line_col.line, line_col.col), + PositionEncoding::Utf16 => { let line_col = line_index.index.to_utf16(line_col); lsp_types::Position::new(line_col.line, line_col.col) } @@ -1394,7 +1394,7 @@ fn main() { let line_index = LineIndex { index: Arc::new(ide::LineIndex::new(text)), endings: LineEndings::Unix, - encoding: OffsetEncoding::Utf16, + encoding: PositionEncoding::Utf16, }; let converted: Vec = folds.into_iter().map(|it| folding_range(text, &line_index, true, it)).collect(); diff --git a/crates/syntax/rust.ungram b/crates/syntax/rust.ungram index 894795435451c..5379732ac6c37 100644 --- a/crates/syntax/rust.ungram +++ b/crates/syntax/rust.ungram @@ -51,7 +51,7 @@ TypeArg = Type AssocTypeArg = - NameRef GenericParamList? (':' TypeBoundList | ('=' Type | ConstArg)) + NameRef GenericArgList? (':' TypeBoundList | ('=' Type | ConstArg)) LifetimeArg = Lifetime diff --git a/crates/syntax/src/ast/generated/nodes.rs b/crates/syntax/src/ast/generated/nodes.rs index 449402e5f5b30..6cfb98d92fcf2 100644 --- a/crates/syntax/src/ast/generated/nodes.rs +++ b/crates/syntax/src/ast/generated/nodes.rs @@ -120,7 +120,7 @@ pub struct AssocTypeArg { impl ast::HasTypeBounds for AssocTypeArg {} impl AssocTypeArg { pub fn name_ref(&self) -> Option { support::child(&self.syntax) } - pub fn generic_param_list(&self) -> Option { support::child(&self.syntax) } + pub fn generic_arg_list(&self) -> Option { support::child(&self.syntax) } pub fn eq_token(&self) -> Option { support::token(&self.syntax, T![=]) } pub fn ty(&self) -> Option { support::child(&self.syntax) } pub fn const_arg(&self) -> Option { support::child(&self.syntax) } @@ -142,16 +142,6 @@ impl ConstArg { pub fn expr(&self) -> Option { support::child(&self.syntax) } } -#[derive(Debug, Clone, PartialEq, Eq, Hash)] -pub struct GenericParamList { - pub(crate) syntax: SyntaxNode, -} -impl GenericParamList { - pub fn l_angle_token(&self) -> Option { support::token(&self.syntax, T![<]) } - pub fn generic_params(&self) -> AstChildren { support::children(&self.syntax) } - pub fn r_angle_token(&self) -> Option { support::token(&self.syntax, T![>]) } -} - #[derive(Debug, Clone, PartialEq, Eq, Hash)] pub struct TypeBoundList { pub(crate) syntax: SyntaxNode, @@ -527,6 +517,16 @@ impl Abi { pub fn extern_token(&self) -> Option { support::token(&self.syntax, T![extern]) } } +#[derive(Debug, Clone, PartialEq, Eq, Hash)] +pub struct GenericParamList { + pub(crate) syntax: SyntaxNode, +} +impl GenericParamList { + pub fn l_angle_token(&self) -> Option { support::token(&self.syntax, T![<]) } + pub fn generic_params(&self) -> AstChildren { support::children(&self.syntax) } + pub fn r_angle_token(&self) -> Option { support::token(&self.syntax, T![>]) } +} + #[derive(Debug, Clone, PartialEq, Eq, Hash)] pub struct WhereClause { pub(crate) syntax: SyntaxNode, @@ -1834,17 +1834,6 @@ impl AstNode for ConstArg { } fn syntax(&self) -> &SyntaxNode { &self.syntax } } -impl AstNode for GenericParamList { - fn can_cast(kind: SyntaxKind) -> bool { kind == GENERIC_PARAM_LIST } - fn cast(syntax: SyntaxNode) -> Option { - if Self::can_cast(syntax.kind()) { - Some(Self { syntax }) - } else { - None - } - } - fn syntax(&self) -> &SyntaxNode { &self.syntax } -} impl AstNode for TypeBoundList { fn can_cast(kind: SyntaxKind) -> bool { kind == TYPE_BOUND_LIST } fn cast(syntax: SyntaxNode) -> Option { @@ -2153,6 +2142,17 @@ impl AstNode for Abi { } fn syntax(&self) -> &SyntaxNode { &self.syntax } } +impl AstNode for GenericParamList { + fn can_cast(kind: SyntaxKind) -> bool { kind == GENERIC_PARAM_LIST } + fn cast(syntax: SyntaxNode) -> Option { + if Self::can_cast(syntax.kind()) { + Some(Self { syntax }) + } else { + None + } + } + fn syntax(&self) -> &SyntaxNode { &self.syntax } +} impl AstNode for WhereClause { fn can_cast(kind: SyntaxKind) -> bool { kind == WHERE_CLAUSE } fn cast(syntax: SyntaxNode) -> Option { @@ -4263,11 +4263,6 @@ impl std::fmt::Display for ConstArg { std::fmt::Display::fmt(self.syntax(), f) } } -impl std::fmt::Display for GenericParamList { - fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { - std::fmt::Display::fmt(self.syntax(), f) - } -} impl std::fmt::Display for TypeBoundList { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { std::fmt::Display::fmt(self.syntax(), f) @@ -4408,6 +4403,11 @@ impl std::fmt::Display for Abi { std::fmt::Display::fmt(self.syntax(), f) } } +impl std::fmt::Display for GenericParamList { + fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { + std::fmt::Display::fmt(self.syntax(), f) + } +} impl std::fmt::Display for WhereClause { fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result { std::fmt::Display::fmt(self.syntax(), f) diff --git a/docs/dev/architecture.md b/docs/dev/architecture.md index c173a239feab3..e3a4fdfda90c2 100644 --- a/docs/dev/architecture.md +++ b/docs/dev/architecture.md @@ -479,7 +479,9 @@ It is not cheap enough to enable in prod, and this is a bug which should be fixe ### Configurability rust-analyzer strives to be as configurable as possible while offering reasonable defaults where no configuration exists yet. +The rule of thumb is to enable most features by default unless they are buggy or degrade performance too much. There will always be features that some people find more annoying than helpful, so giving the users the ability to tweak or disable these is a big part of offering a good user experience. +Enabling them by default is a matter of discoverability, as many users end up don't know about some features even though they are presented in the manual. Mind the code--architecture gap: at the moment, we are using fewer feature flags than we really should. ### Serialization diff --git a/docs/dev/lsp-extensions.md b/docs/dev/lsp-extensions.md index 6d2c7d7b06349..fe316fcae9b88 100644 --- a/docs/dev/lsp-extensions.md +++ b/docs/dev/lsp-extensions.md @@ -1,5 +1,5 @@