let trait_ref = self.trait_ref(f.db);

write!(f, "<")?;

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);

}

impl HirDisplay for Ty {

if f.should_truncate() {

return write!(f, "{TYPE_HINT_TRUNCATION}");

}

bounds.iter().any(|bound| {

if let WhereClause::Implemented(trait_ref) = bound.skip_binders() {

let trait_ = trait_ref.hir_trait_id();

} else {

false

}

substitution: parameters,

}))

| TyKind::OpaqueType(opaque_ty_id, parameters) => {

if let ImplTraitId::ReturnTypeImplTrait(func, idx) = impl_trait_id {

let data = (*datas)

.as_ref()

.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());

// Don't count Sized but count when it absent

// (i.e. when explicit ?Sized bound is set).

let default_sized = SizedByDefault::Sized {

};

let sized_bounds = bounds

.skip_binders()

WhereClause::Implemented(trait_ref)

if default_sized.is_sized_trait(

trait_ref.hir_trait_id(),

),

)

})

sig.hir_fmt(f)?;

}

TyKind::FnDef(def, parameters) => {

match def {

CallableDefId::EnumVariantId(e) => {

}

};

if parameters.len(Interner) > 0 {

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;

match f.display_target {

DisplayTarget::Diagnostics | DisplayTarget::Test => {

let name = match *def_id {

};

write!(f, "{name}")?;

}

DisplayTarget::SourceCode { module_id } => {

if let Some(path) = find_path::find_path(

ItemInNs::Types((*def_id).into()),

module_id,

false,

|| f.omit_verbose_types()

{

match self

.filter(|defaults| !defaults.is_empty())

{

None => parameters.as_slice(Interner),

}

TyKind::AssociatedType(assoc_type_id, parameters) => {

let type_alias = from_assoc_type_id(*assoc_type_id);

ItemContainerId::TraitId(it) => it,

_ => panic!("not an associated type"),

};

// 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() {

// 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?

}

}

TyKind::Foreign(type_alias) => {

write!(f, "{}", type_alias.name)?;

}

TyKind::OpaqueType(opaque_ty_id, parameters) => {

match impl_trait_id {

ImplTraitId::ReturnTypeImplTrait(func, idx) => {

let datas =

let data = (*datas)

.as_ref()

.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());

let bounds = data.substitute(Interner, &parameters);

write_bounds_like_dyn_trait_with_prefix(

"impl",

bounds.skip_binders(),

SizedByDefault::Sized { anchor: krate },

)?;

// FIXME: it would maybe be good to distinguish this from the alias type (when debug printing), and to show the substitution

}

DisplaySourceCodeError::Closure,

));

}

if let Some(sig) = sig {

if sig.params().is_empty() {

write!(f, "||")?;

}

}

TyKind::Placeholder(idx) => {

let param_data = &generics.params.type_or_consts[id.local_id];

match param_data {

TypeOrConstParamData::TypeParamData(p) => match p.provenance {

write!(f, "{}", p.name.clone().unwrap_or_else(Name::missing))?

}

TypeParamProvenance::ArgumentImplTrait => {

write_bounds_like_dyn_trait_with_prefix(

"impl",

&bounds,

SizedByDefault::Sized { anchor: krate },

)?;

}

},

bounds.extend(auto_traits);

write_bounds_like_dyn_trait_with_prefix(

"dyn",

&bounds,

SizedByDefault::NotSized,

)?;

}

TyKind::Alias(AliasTy::Projection(p_ty)) => p_ty.hir_fmt(f)?,

TyKind::Alias(AliasTy::Opaque(opaque_ty)) => {

match impl_trait_id {

ImplTraitId::ReturnTypeImplTrait(func, idx) => {

let datas =

let data = (*datas)

.as_ref()

.map(|rpit| rpit.impl_traits[idx as usize].bounds.clone());

let bounds = data.substitute(Interner, &opaque_ty.substitution);

write_bounds_like_dyn_trait_with_prefix(

"impl",

bounds.skip_binders(),

SizedByDefault::Sized { anchor: krate },

)?;

}

ImplTraitId::AsyncBlockTypeImplTrait(..) => {

DisplaySourceCodeError::Generator,

));

}

let subst = subst.as_slice(Interner);

let a: Option<SmallVec<[&Ty; 3]>> = subst

.get(subst.len() - 3..)

}

pub fn write_bounds_like_dyn_trait_with_prefix(

prefix: &str,

predicates: &[QuantifiedWhereClause],

default_sized: SizedByDefault,

) -> Result<(), HirDisplayError> {

write!(f, "{prefix}")?;

if !predicates.is_empty()

|| predicates.is_empty() && matches!(default_sized, SizedByDefault::Sized { .. })

{

write!(f, " ")?;

} else {

Ok(())

}

}

fn write_bounds_like_dyn_trait(

predicates: &[QuantifiedWhereClause],

default_sized: SizedByDefault,

) -> Result<(), HirDisplayError> {

// Note: This code is written to produce nice results (i.e.

// corresponding to surface Rust) for types that can occur in

// 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

write!(f, "{}", f.db.trait_data(trait_).name)?;

if let [_, params @ ..] = &*trait_ref.substitution.as_slice(Interner) {

if is_fn_trait {

if let Some(args) =

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);

write!(f, "{}", type_alias.name)?;

let proj_arg_count = generics(f.db.upcast(), assoc_ty_id.into()).len_self();

if proj_arg_count > 0 {

if angle_open {

write!(f, ">")?;

}

if !is_sized {

} else if first {

write!(f, "Sized")?;

}

}

Ok(())

}

fn fmt_trait_ref(

f: &mut HirFormatter<'_>,

use_as: bool,

) -> Result<(), HirDisplayError> {

if f.should_truncate() {

} else {

write!(f, ": ")?;

}

if tr.substitution.len(Interner) > 1 {

write!(f, "<")?;

f.write_joined(&tr.substitution.as_slice(Interner)[1..], ", ")?;

impl HirDisplay for TraitRef {

fn hir_fmt(&self, f: &mut HirFormatter<'_>) -> Result<(), HirDisplayError> {

}

}

WhereClause::Implemented(trait_ref) => trait_ref.hir_fmt(f)?,

WhereClause::AliasEq(AliasEq { alias: AliasTy::Projection(projection_ty), ty }) => {

write!(f, "<")?;

ty.hir_fmt(f)?;

}

WhereClause::AliasEq(_) => write!(f, "{{error}}")?,

ConstScalarOrPath, TraitBoundModifier, TraitRef as HirTraitRef, TypeBound, TypeRef,

},

AdtId, AssocItemId, ConstId, ConstParamId, EnumId, EnumVariantId, FunctionId, GenericDefId,

};

use hir_expand::{name::Name, ExpandResult};

use intern::Interned;

EnumVariantId(EnumVariantId),

}

impl_from!(FunctionId, StructId, EnumVariantId for CallableDefId);

impl CallableDefId {

pub fn krate(self, db: &dyn HirDatabase) -> CrateId {

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 };

}

Ok(())

}

ExpandResult, HirFileId, InFile, MacroFile, Origin,

},

hir_ty::{

PointerCast, Safety,

},

};

};

use either::Either;

use ide_db::{base_db::FileRange, famous_defs::FamousDefs, RootDatabase};

use itertools::Itertools;

use smallvec::{smallvec, SmallVec};

mut max_length: Option<usize>,

ty: hir::Type,

label_builder: &mut InlayHintLabelBuilder<'_>,

let iter_item_type = hint_iterator(sema, famous_defs, &ty);

match iter_item_type {

const LABEL_END: &str = ">";

}

}

let mut label_builder = InlayHintLabelBuilder {

location_link_enabled: config.location_links,

result: InlayHintLabel::default(),

};

let r = label_builder.finish();

Some(r)

}

};

}

fn hint_iterator(

sema: &Semantics<'_, RootDatabase>,

famous_defs: &FamousDefs<'_, '_>,

ty: &hir::Type,

let db = sema.db;

let strukt = ty.strip_references().as_adt()?;

let krate = strukt.module(db).krate();

_ => None,

})?;

if let Some(ty) = ty.normalize_trait_assoc_type(db, &[], assoc_type_item) {

}

}

range: 484..554,

kind: Chaining,

label: [

],

},

InlayHint {

range: 174..241,

kind: Chaining,

label: [

],

},

InlayHint {

range: 174..224,

kind: Chaining,

label: [

],

},

InlayHint {

range: 174..206,

kind: Chaining,

label: [

],

},

InlayHint {