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Auto merge of #13948 - Veykril:inlay-hints, r=Veykril

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Make inlay hint location links work for more types
This commit is contained in:
bors 2023-01-14 12:50:26 +00:00
commit 6673e515b7
7 changed files with 220 additions and 99 deletions
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182
crates/hir-ty/src/display.rs
View file

@ -325,7 +325,7 @@ impl HirDisplay for ProjectionTy {
let trait_ref = self.trait_ref(f.db);
write!(f, "<")?;
fmt_trait_ref(&trait_ref, f, true)?;
fmt_trait_ref(f, &trait_ref, 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);
@ -383,7 +383,10 @@ impl HirDisplay for BoundVar {
}
impl HirDisplay for Ty {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
fn hir_fmt(
&self,
f @ &mut HirFormatter { db, .. }: &mut HirFormatter<'_>,
) -> Result<(), HirDisplayError> {
if f.should_truncate() {
return write!(f, "{TYPE_HINT_TRUNCATION}");
}
@ -434,7 +437,7 @@ impl HirDisplay for Ty {
bounds.iter().any(|bound| {
if let WhereClause::Implemented(trait_ref) = bound.skip_binders() {
let trait_ = trait_ref.hir_trait_id();
fn_traits(f.db.upcast(), trait_).any(|it| it == trait_)
fn_traits(db.upcast(), trait_).any(|it| it == trait_)
} else {
false
}
@ -450,12 +453,11 @@ impl HirDisplay for Ty {
substitution: parameters,
}))
| TyKind::OpaqueType(opaque_ty_id, parameters) => {
let impl_trait_id =
f.db.lookup_intern_impl_trait_id((*opaque_ty_id).into());
let impl_trait_id = db.lookup_intern_impl_trait_id((*opaque_ty_id).into());
if let ImplTraitId::ReturnTypeImplTrait(func, idx) = impl_trait_id {
let datas =
f.db.return_type_impl_traits(func)
.expect("impl trait id without data");
let datas = db
.return_type_impl_traits(func)
.expect("impl trait id without data");
let data = (*datas)
.as_ref()
.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());
@ -465,7 +467,7 @@ impl HirDisplay for Ty {
// Don't count Sized but count when it absent
// (i.e. when explicit ?Sized bound is set).
let default_sized = SizedByDefault::Sized {
anchor: func.lookup(f.db.upcast()).module(f.db.upcast()).krate(),
anchor: func.lookup(db.upcast()).module(db.upcast()).krate(),
};
let sized_bounds = bounds
.skip_binders()
@ -476,7 +478,7 @@ impl HirDisplay for Ty {
WhereClause::Implemented(trait_ref)
if default_sized.is_sized_trait(
trait_ref.hir_trait_id(),
f.db.upcast(),
db.upcast(),
),
)
})
@ -524,19 +526,19 @@ impl HirDisplay for Ty {
sig.hir_fmt(f)?;
}
TyKind::FnDef(def, parameters) => {
let def = from_chalk(f.db, *def);
let sig = f.db.callable_item_signature(def).substitute(Interner, parameters);
let def = from_chalk(db, *def);
let sig = db.callable_item_signature(def).substitute(Interner, parameters);
f.start_location_link(def.into());
match def {
CallableDefId::FunctionId(ff) => {
write!(f, "fn {}", f.db.function_data(ff).name)?
}
CallableDefId::StructId(s) => write!(f, "{}", f.db.struct_data(s).name)?,
CallableDefId::FunctionId(ff) => write!(f, "fn {}", db.function_data(ff).name)?,
CallableDefId::StructId(s) => write!(f, "{}", db.struct_data(s).name)?,
CallableDefId::EnumVariantId(e) => {
write!(f, "{}", f.db.enum_data(e.parent).variants[e.local_id].name)?
write!(f, "{}", db.enum_data(e.parent).variants[e.local_id].name)?
}
};
f.end_location_link();
if parameters.len(Interner) > 0 {
let generics = generics(f.db.upcast(), def.into());
let generics = generics(db.upcast(), def.into());
let (parent_params, self_param, type_params, const_params, _impl_trait_params) =
generics.provenance_split();
let total_len = parent_params + self_param + type_params + const_params;
@ -568,15 +570,15 @@ impl HirDisplay for Ty {
match f.display_target {
DisplayTarget::Diagnostics | DisplayTarget::Test => {
let name = match *def_id {
hir_def::AdtId::StructId(it) => f.db.struct_data(it).name.clone(),
hir_def::AdtId::UnionId(it) => f.db.union_data(it).name.clone(),
hir_def::AdtId::EnumId(it) => f.db.enum_data(it).name.clone(),
hir_def::AdtId::StructId(it) => db.struct_data(it).name.clone(),
hir_def::AdtId::UnionId(it) => db.union_data(it).name.clone(),
hir_def::AdtId::EnumId(it) => db.enum_data(it).name.clone(),
};
write!(f, "{name}")?;
}
DisplayTarget::SourceCode { module_id } => {
if let Some(path) = find_path::find_path(
f.db.upcast(),
db.upcast(),
ItemInNs::Types((*def_id).into()),
module_id,
false,
@ -596,8 +598,8 @@ impl HirDisplay for Ty {
|| f.omit_verbose_types()
{
match self
.as_generic_def(f.db)
.map(|generic_def_id| f.db.generic_defaults(generic_def_id))
.as_generic_def(db)
.map(|generic_def_id| db.generic_defaults(generic_def_id))
.filter(|defaults| !defaults.is_empty())
{
None => parameters.as_slice(Interner),
@ -669,16 +671,23 @@ impl HirDisplay for Ty {
}
TyKind::AssociatedType(assoc_type_id, parameters) => {
let type_alias = from_assoc_type_id(*assoc_type_id);
let trait_ = match type_alias.lookup(f.db.upcast()).container {
let trait_ = match type_alias.lookup(db.upcast()).container {
ItemContainerId::TraitId(it) => it,
_ => panic!("not an associated type"),
};
let trait_ = f.db.trait_data(trait_);
let type_alias_data = f.db.type_alias_data(type_alias);
let trait_data = db.trait_data(trait_);
let type_alias_data = db.type_alias_data(type_alias);
// 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)?;
f.start_location_link(trait_.into());
write!(f, "{}", trait_data.name)?;
f.end_location_link();
write!(f, "::")?;
f.start_location_link(type_alias.into());
write!(f, "{}", type_alias_data.name)?;
f.end_location_link();
// 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?
@ -697,25 +706,28 @@ impl HirDisplay for Ty {
}
}
TyKind::Foreign(type_alias) => {
let type_alias = f.db.type_alias_data(from_foreign_def_id(*type_alias));
let alias = from_foreign_def_id(*type_alias);
let type_alias = db.type_alias_data(alias);
f.start_location_link(alias.into());
write!(f, "{}", type_alias.name)?;
f.end_location_link();
}
TyKind::OpaqueType(opaque_ty_id, parameters) => {
let impl_trait_id = f.db.lookup_intern_impl_trait_id((*opaque_ty_id).into());
let impl_trait_id = db.lookup_intern_impl_trait_id((*opaque_ty_id).into());
match impl_trait_id {
ImplTraitId::ReturnTypeImplTrait(func, idx) => {
let datas =
f.db.return_type_impl_traits(func).expect("impl trait id without data");
db.return_type_impl_traits(func).expect("impl trait id without data");
let data = (*datas)
.as_ref()
.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());
let bounds = data.substitute(Interner, &parameters);
let krate = func.lookup(f.db.upcast()).module(f.db.upcast()).krate();
let krate = func.lookup(db.upcast()).module(db.upcast()).krate();
write_bounds_like_dyn_trait_with_prefix(
f,
"impl",
bounds.skip_binders(),
SizedByDefault::Sized { anchor: krate },
f,
)?;
// FIXME: it would maybe be good to distinguish this from the alias type (when debug printing), and to show the substitution
}
@ -732,7 +744,7 @@ impl HirDisplay for Ty {
DisplaySourceCodeError::Closure,
));
}
let sig = substs.at(Interner, 0).assert_ty_ref(Interner).callable_sig(f.db);
let sig = substs.at(Interner, 0).assert_ty_ref(Interner).callable_sig(db);
if let Some(sig) = sig {
if sig.params().is_empty() {
write!(f, "||")?;
@ -751,8 +763,8 @@ impl HirDisplay for Ty {
}
}
TyKind::Placeholder(idx) => {
let id = from_placeholder_idx(f.db, *idx);
let generics = generics(f.db.upcast(), id.parent);
let id = from_placeholder_idx(db, *idx);
let generics = generics(db.upcast(), id.parent);
let param_data = &generics.params.type_or_consts[id.local_id];
match param_data {
TypeOrConstParamData::TypeParamData(p) => match p.provenance {
@ -760,28 +772,28 @@ impl HirDisplay for Ty {
write!(f, "{}", p.name.clone().unwrap_or_else(Name::missing))?
}
TypeParamProvenance::ArgumentImplTrait => {
let substs = generics.placeholder_subst(f.db);
let bounds =
f.db.generic_predicates(id.parent)
.iter()
.map(|pred| pred.clone().substitute(Interner, &substs))
.filter(|wc| match &wc.skip_binders() {
WhereClause::Implemented(tr) => {
&tr.self_type_parameter(Interner) == self
}
WhereClause::AliasEq(AliasEq {
alias: AliasTy::Projection(proj),
ty: _,
}) => &proj.self_type_parameter(f.db) == self,
_ => false,
})
.collect::<Vec<_>>();
let krate = id.parent.module(f.db.upcast()).krate();
let substs = generics.placeholder_subst(db);
let bounds = db
.generic_predicates(id.parent)
.iter()
.map(|pred| pred.clone().substitute(Interner, &substs))
.filter(|wc| match &wc.skip_binders() {
WhereClause::Implemented(tr) => {
&tr.self_type_parameter(Interner) == self
}
WhereClause::AliasEq(AliasEq {
alias: AliasTy::Projection(proj),
ty: _,
}) => &proj.self_type_parameter(db) == self,
_ => false,
})
.collect::<Vec<_>>();
let krate = id.parent.module(db.upcast()).krate();
write_bounds_like_dyn_trait_with_prefix(
f,
"impl",
&bounds,
SizedByDefault::Sized { anchor: krate },
f,
)?;
}
},
@ -803,29 +815,29 @@ impl HirDisplay for Ty {
bounds.extend(auto_traits);
write_bounds_like_dyn_trait_with_prefix(
f,
"dyn",
&bounds,
SizedByDefault::NotSized,
f,
)?;
}
TyKind::Alias(AliasTy::Projection(p_ty)) => p_ty.hir_fmt(f)?,
TyKind::Alias(AliasTy::Opaque(opaque_ty)) => {
let impl_trait_id = f.db.lookup_intern_impl_trait_id(opaque_ty.opaque_ty_id.into());
let impl_trait_id = db.lookup_intern_impl_trait_id(opaque_ty.opaque_ty_id.into());
match impl_trait_id {
ImplTraitId::ReturnTypeImplTrait(func, idx) => {
let datas =
f.db.return_type_impl_traits(func).expect("impl trait id without data");
db.return_type_impl_traits(func).expect("impl trait id without data");
let data = (*datas)
.as_ref()
.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());
let bounds = data.substitute(Interner, &opaque_ty.substitution);
let krate = func.lookup(f.db.upcast()).module(f.db.upcast()).krate();
let krate = func.lookup(db.upcast()).module(db.upcast()).krate();
write_bounds_like_dyn_trait_with_prefix(
f,
"impl",
bounds.skip_binders(),
SizedByDefault::Sized { anchor: krate },
f,
)?;
}
ImplTraitId::AsyncBlockTypeImplTrait(..) => {
@ -848,7 +860,6 @@ impl HirDisplay for Ty {
DisplaySourceCodeError::Generator,
));
}
let subst = subst.as_slice(Interner);
let a: Option<SmallVec<[&Ty; 3]>> = subst
.get(subst.len() - 3..)
@ -923,26 +934,26 @@ impl SizedByDefault {
}
pub fn write_bounds_like_dyn_trait_with_prefix(
f: &mut HirFormatter<'_>,
prefix: &str,
predicates: &[QuantifiedWhereClause],
default_sized: SizedByDefault,
f: &mut HirFormatter<'_>,
) -> Result<(), HirDisplayError> {
write!(f, "{prefix}")?;
if !predicates.is_empty()
|| predicates.is_empty() && matches!(default_sized, SizedByDefault::Sized { .. })
{
write!(f, " ")?;
write_bounds_like_dyn_trait(predicates, default_sized, f)
write_bounds_like_dyn_trait(f, predicates, default_sized)
} else {
Ok(())
}
}
fn write_bounds_like_dyn_trait(
f: &mut HirFormatter<'_>,
predicates: &[QuantifiedWhereClause],
default_sized: SizedByDefault,
f: &mut HirFormatter<'_>,
) -> Result<(), HirDisplayError> {
// Note: This code is written to produce nice results (i.e.
// corresponding to surface Rust) for types that can occur in
@ -978,7 +989,9 @@ fn write_bounds_like_dyn_trait(
// We assume that the self type is ^0.0 (i.e. the
// existential) here, which is the only thing that's
// possible in actual Rust, and hence don't print it
f.start_location_link(trait_.into());
write!(f, "{}", f.db.trait_data(trait_).name)?;
f.end_location_link();
if let [_, params @ ..] = &*trait_ref.substitution.as_slice(Interner) {
if is_fn_trait {
if let Some(args) =
@ -1015,7 +1028,9 @@ fn write_bounds_like_dyn_trait(
if let AliasTy::Projection(proj) = alias {
let assoc_ty_id = from_assoc_type_id(proj.associated_ty_id);
let type_alias = f.db.type_alias_data(assoc_ty_id);
f.start_location_link(assoc_ty_id.into());
write!(f, "{}", type_alias.name)?;
f.end_location_link();
let proj_arg_count = generics(f.db.upcast(), assoc_ty_id.into()).len_self();
if proj_arg_count > 0 {
@ -1040,19 +1055,34 @@ fn write_bounds_like_dyn_trait(
if angle_open {
write!(f, ">")?;
}
if matches!(default_sized, SizedByDefault::Sized { .. }) {
if let SizedByDefault::Sized { anchor } = default_sized {
let sized_trait =
f.db.lang_item(anchor, SmolStr::new_inline("sized"))
.and_then(|lang_item| lang_item.as_trait());
if !is_sized {
write!(f, "{}?Sized", if first { "" } else { " + " })?;
if !first {
write!(f, " + ")?;
}
if let Some(sized_trait) = sized_trait {
f.start_location_link(sized_trait.into());
}
write!(f, "?Sized")?;
} else if first {
if let Some(sized_trait) = sized_trait {
f.start_location_link(sized_trait.into());
}
write!(f, "Sized")?;
}
if let Some(_) = sized_trait {
f.end_location_link();
}
}
Ok(())
}
fn fmt_trait_ref(
tr: &TraitRef,
f: &mut HirFormatter<'_>,
tr: &TraitRef,
use_as: bool,
) -> Result<(), HirDisplayError> {
if f.should_truncate() {
@ -1065,7 +1095,10 @@ fn fmt_trait_ref(
} else {
write!(f, ": ")?;
}
write!(f, "{}", f.db.trait_data(tr.hir_trait_id()).name)?;
let trait_ = tr.hir_trait_id();
f.start_location_link(trait_.into());
write!(f, "{}", f.db.trait_data(trait_).name)?;
f.end_location_link();
if tr.substitution.len(Interner) > 1 {
write!(f, "<")?;
f.write_joined(&tr.substitution.as_slice(Interner)[1..], ", ")?;
@ -1076,7 +1109,7 @@ fn fmt_trait_ref(
impl HirDisplay for TraitRef {
fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {
fmt_trait_ref(self, f, false)
fmt_trait_ref(f, self, false)
}
}
@ -1090,12 +1123,13 @@ impl HirDisplay for WhereClause {
WhereClause::Implemented(trait_ref) => trait_ref.hir_fmt(f)?,
WhereClause::AliasEq(AliasEq { alias: AliasTy::Projection(projection_ty), ty }) => {
write!(f, "<")?;
fmt_trait_ref(&projection_ty.trait_ref(f.db), f, true)?;
write!(
f,
">::{} = ",
f.db.type_alias_data(from_assoc_type_id(projection_ty.associated_ty_id)).name,
)?;
fmt_trait_ref(f, &projection_ty.trait_ref(f.db), true)?;
write!(f, ">::",)?;
let type_alias = from_assoc_type_id(projection_ty.associated_ty_id);
f.start_location_link(type_alias.into());
write!(f, "{}", f.db.type_alias_data(type_alias).name,)?;
f.end_location_link();
write!(f, " = ")?;
ty.hir_fmt(f)?;
}
WhereClause::AliasEq(_) => write!(f, "{{error}}")?,

13
crates/hir-ty/src/lower.rs
View file

@ -30,8 +30,8 @@ use hir_def::{
ConstScalarOrPath, TraitBoundModifier, TraitRef as HirTraitRef, TypeBound, TypeRef,
},
AdtId, AssocItemId, ConstId, ConstParamId, EnumId, EnumVariantId, FunctionId, GenericDefId,
HasModule, ImplId, ItemContainerId, LocalFieldId, Lookup, StaticId, StructId, TraitId,
TypeAliasId, TypeOrConstParamId, TypeParamId, UnionId, VariantId,
HasModule, ImplId, ItemContainerId, LocalFieldId, Lookup, ModuleDefId, StaticId, StructId,
TraitId, TypeAliasId, TypeOrConstParamId, TypeParamId, UnionId, VariantId,
};
use hir_expand::{name::Name, ExpandResult};
use intern::Interned;
@ -1704,6 +1704,15 @@ pub enum CallableDefId {
EnumVariantId(EnumVariantId),
}
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 {

2
crates/hir/src/display.rs
View file

@ -270,7 +270,7 @@ impl HirDisplay for TypeParam {
let has_only_not_sized_bound = predicates.is_empty();
if !has_only_sized_bound || has_only_not_sized_bound {
let default_sized = SizedByDefault::Sized { anchor: krate };
write_bounds_like_dyn_trait_with_prefix(":", &predicates, default_sized, f)?;
write_bounds_like_dyn_trait_with_prefix(f, ":", &predicates, default_sized)?;
}
Ok(())
}

2
crates/hir/src/lib.rs
View file

@ -127,7 +127,7 @@ pub use {
ExpandResult, HirFileId, InFile, MacroFile, Origin,
},
hir_ty::{
display::{HirDisplay, HirWrite},
display::{HirDisplay, HirDisplayError, HirWrite},
PointerCast, Safety,
},
};

47
crates/ide/src/inlay_hints.rs
View file

@ -4,7 +4,9 @@ use std::{
};
use either::Either;
use hir::{known, HasVisibility, HirDisplay, HirWrite, ModuleDef, ModuleDefId, Semantics};
use hir::{
known, HasVisibility, HirDisplay, HirDisplayError, HirWrite, ModuleDef, ModuleDefId, Semantics,
};
use ide_db::{base_db::FileRange, famous_defs::FamousDefs, RootDatabase};
use itertools::Itertools;
use smallvec::{smallvec, SmallVec};
@ -297,24 +299,35 @@ fn label_of_ty(
mut max_length: Option<usize>,
ty: hir::Type,
label_builder: &mut InlayHintLabelBuilder<'_>,
) {
) -> Result<(), HirDisplayError> {
let iter_item_type = hint_iterator(sema, famous_defs, &ty);
match iter_item_type {
Some(ty) => {
const LABEL_START: &str = "impl Iterator<Item = ";
Some((iter_trait, ty)) => {
const LABEL_START: &str = "impl ";
const LABEL_ITERATOR: &str = "Iterator";
const LABEL_MIDDLE: &str = "<Item = ";
const LABEL_END: &str = ">";
max_length =
max_length.map(|len| len.saturating_sub(LABEL_START.len() + LABEL_END.len()));
max_length = max_length.map(|len| {
len.saturating_sub(
LABEL_START.len()
+ LABEL_ITERATOR.len()
+ LABEL_MIDDLE.len()
+ LABEL_END.len(),
)
});
label_builder.write_str(LABEL_START).unwrap();
rec(sema, famous_defs, max_length, ty, label_builder);
label_builder.write_str(LABEL_END).unwrap();
label_builder.write_str(LABEL_START)?;
label_builder.start_location_link(ModuleDef::from(iter_trait).into());
label_builder.write_str(LABEL_ITERATOR)?;
label_builder.end_location_link();
label_builder.write_str(LABEL_MIDDLE)?;
rec(sema, famous_defs, max_length, ty, label_builder)?;
label_builder.write_str(LABEL_END)?;
Ok(())
}
None => {
let _ = ty.display_truncated(sema.db, max_length).write_to(label_builder);
}
};
None => ty.display_truncated(sema.db, max_length).write_to(label_builder),
}
}
let mut label_builder = InlayHintLabelBuilder {
@ -324,7 +337,7 @@ fn label_of_ty(
location_link_enabled: config.location_links,
result: InlayHintLabel::default(),
};
rec(sema, famous_defs, config.max_length, ty, &mut label_builder);
let _ = rec(sema, famous_defs, config.max_length, ty, &mut label_builder);
let r = label_builder.finish();
Some(r)
}
@ -430,12 +443,12 @@ fn hints(
};
}
/// Checks if the type is an Iterator from std::iter and returns its item type.
/// Checks if the type is an Iterator from std::iter and returns the iterator trait and the item type of the concrete iterator.
fn hint_iterator(
sema: &Semantics<'_, RootDatabase>,
famous_defs: &FamousDefs<'_, '_>,
ty: &hir::Type,
) -> Option<hir::Type> {
) -> Option<(hir::Trait, hir::Type)> {
let db = sema.db;
let strukt = ty.strip_references().as_adt()?;
let krate = strukt.module(db).krate();
@ -458,7 +471,7 @@ fn hint_iterator(
_ => None,
})?;
if let Some(ty) = ty.normalize_trait_assoc_type(db, &[], assoc_type_item) {
return Some(ty);
return Some((iter_trait, ty));
}
}

28
crates/ide/src/inlay_hints/bind_pat.rs
View file

@ -318,7 +318,33 @@ fn main(a: SliceIter<'_, Container>) {
range: 484..554,
kind: Chaining,
label: [
"impl Iterator<Item = impl Iterator<Item = &&str>>",
"impl ",
InlayHintLabelPart {
text: "Iterator",
linked_location: Some(
FileRange {
file_id: FileId(
1,
),
range: 2248..2256,
},
),
tooltip: "",
},
"<Item = impl ",
InlayHintLabelPart {
text: "Iterator",
linked_location: Some(
FileRange {
file_id: FileId(
1,
),
range: 2248..2256,
},
),
tooltip: "",
},
"<Item = &&str>>",
],
},
InlayHint {

45
crates/ide/src/inlay_hints/chaining.rs
View file

@ -408,21 +408,60 @@ fn main() {
range: 174..241,
kind: Chaining,
label: [
"impl Iterator<Item = ()>",
"impl ",
InlayHintLabelPart {
text: "Iterator",
linked_location: Some(
FileRange {
file_id: FileId(
1,
),
range: 2248..2256,
},
),
tooltip: "",
},
"<Item = ()>",
],
},
InlayHint {
range: 174..224,
kind: Chaining,
label: [
"impl Iterator<Item = ()>",
"impl ",
InlayHintLabelPart {
text: "Iterator",
linked_location: Some(
FileRange {
file_id: FileId(
1,
),
range: 2248..2256,
},
),
tooltip: "",
},
"<Item = ()>",
],
},
InlayHint {
range: 174..206,
kind: Chaining,
label: [
"impl Iterator<Item = ()>",
"impl ",
InlayHintLabelPart {
text: "Iterator",
linked_location: Some(
FileRange {
file_id: FileId(
1,
),
range: 2248..2256,
},
),
tooltip: "",
},
"<Item = ()>",
],
},
InlayHint {