use hir_def::{

GenericDefId, HasModule, ImportPathConfig, ItemContainerId, LocalFieldId, Lookup, ModuleDefId,

ModuleId, TraitId,

db::DefDatabase,

find_path::{self, PrefixKind},

item_scope::ItemInNs,

lang_item::{LangItem, LangItemTarget},

nameres::DefMap,

visibility::Visibility,

};

use intern::{Internable, Interned, sym};

use itertools::Itertools;

use la_arena::ArenaMap;

write!(

f,

">::{}",

.name

.display(f.db.upcast(), f.edition())

)?;

}

TyKind::Adt(adt, _) if b.len() == 2 * size_of::<usize>() => match adt.0 {

hir_def::AdtId::StructId(s) => {

write!(f, "&{}", data.name.display(f.db.upcast(), f.edition()))?;

Ok(())

}

};

match adt.0 {

hir_def::AdtId::StructId(s) => {

write!(f, "{}", data.name.display(f.db.upcast(), f.edition()))?;

let field_types = f.db.field_types(s.into());

render_variant_after_name(

f,

&field_types,

f.db.trait_environment(adt.0.into()),

)

}

hir_def::AdtId::UnionId(u) => {

}

hir_def::AdtId::EnumId(e) => {

let Ok(target_data_layout) = f.db.target_data_layout(trait_env.krate) else {

else {

return f.write_str("<failed-to-detect-variant>");

};

let field_types = f.db.field_types(var_id.into());

render_variant_after_name(

f,

&field_types,

f.db.trait_environment(adt.0.into()),

}

fn render_variant_after_name(

f: &mut HirFormatter<'_>,

field_types: &ArenaMap<LocalFieldId, Binders<Ty>>,

trait_env: Arc<TraitEnvironment>,

b: &[u8],

memory_map: &MemoryMap,

) -> Result<(), HirDisplayError> {

let render_field = |f: &mut HirFormatter<'_>, id: LocalFieldId| {

let offset = layout.fields.offset(u32::from(id.into_raw()) as usize).bytes_usize();

let ty = field_types[id].clone().substitute(Interner, subst);

let size = layout.size.bytes_usize();

render_const_scalar(f, &b[offset..offset + size], memory_map, &ty)

};

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

if let Some((id, data)) = it.next() {

write!(f, " {}: ", data.name.display(f.db.upcast(), f.edition()))?;

}

Ok(())

}

}

}

CallableDefId::FunctionId(ff) => write!(

f,

"{}",

)?,

f,

"{}",

)?,

};

f.end_location_link();

match f.display_kind {

DisplayKind::Diagnostics | DisplayKind::Test => {

let name = match *def_id {

};

write!(f, "{}", name.display(f.db.upcast(), f.edition()))?;

}

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_kind.is_test() {

}

TyKind::Foreign(type_alias) => {

let alias = from_foreign_def_id(*type_alias);

f.start_location_link(alias.into());

write!(f, "{}", type_alias.name.display(f.db.upcast(), f.edition()))?;

f.end_location_link();

// 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());

f.end_location_link();

if is_fn_trait {

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

}

if let AliasTy::Projection(proj) = alias {

let assoc_ty_id = from_assoc_type_id(proj.associated_ty_id);

f.start_location_link(assoc_ty_id.into());

write!(f, "{}", type_alias.name.display(f.db.upcast(), f.edition()))?;

f.end_location_link();

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

let trait_ = self.hir_trait_id();

f.start_location_link(trait_.into());

f.end_location_link();

let substs = self.substitution.as_slice(Interner);

hir_fmt_generics(f, &substs[1..], None, substs[0].ty(Interner))

write!(

f,

"{}",

)?;

f.end_location_link();

write!(f, " = ")?;

}

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError>;

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError> {

}

}

value: T,

) -> impl HirDisplay + 'a {

}

}

}

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

T::hir_fmt(&self.0, f, self.1)

}

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError> {

TypeRef::Never => write!(f, "!")?,

TypeRef::Placeholder => write!(f, "_")?,

TypeRef::Tuple(elems) => {

write!(f, "(")?;

if elems.len() == 1 {

write!(f, ",")?;

}

write!(f, ")")?;

}

TypeRef::RawPtr(inner, mutability) => {

let mutability = match mutability {

hir_def::type_ref::Mutability::Shared => "*const ",

hir_def::type_ref::Mutability::Mut => "*mut ",

};

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

}

TypeRef::Reference(ref_) => {

let mutability = match ref_.mutability {

write!(f, "{} ", lifetime.name.display(f.db.upcast(), f.edition()))?;

}

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

}

TypeRef::Array(array) => {

write!(f, "[")?;

}

TypeRef::Slice(inner) => {

write!(f, "[")?;

write!(f, "]")?;

}

TypeRef::Fn(fn_) => {

write!(f, "{}: ", name.display(f.db.upcast(), f.edition()))?;

}

if index != function_parameters.len() - 1 {

write!(f, ", ")?;

write!(f, "{}...", if fn_.params.len() == 1 { "" } else { ", " })?;

}

write!(f, ")")?;

TypeRef::Tuple(tup) if tup.is_empty() => {}

_ => {

write!(f, " -> ")?;

}

}

}

}

TypeRef::ImplTrait(bounds) => {

write!(f, "impl ")?;

}

TypeRef::DynTrait(bounds) => {

write!(f, "dyn ")?;

}

TypeRef::Error => write!(f, "{{error}}")?,

}

}

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError> {

match self {

&TypeBound::Path(path, modifier) => {

TraitBoundModifier::None => (),

TraitBoundModifier::Maybe => write!(f, "?")?,

}

}

TypeBound::Lifetime(lifetime) => {

write!(f, "{}", lifetime.name.display(f.db.upcast(), f.edition()))

"for<{}> ",

lifetimes.iter().map(|it| it.display(f.db.upcast(), edition)).format(", ")

)?;

}

TypeBound::Use(args) => {

let edition = f.edition();

}

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError> {

match (self.type_anchor(), self.kind()) {

(Some(anchor), _) => {

write!(f, "<")?;

write!(f, ">")?;

}

(_, PathKind::Plain) => {}

});

if let Some(ty) = trait_self_ty {

write!(f, "<")?;

write!(f, " as ")?;

// Now format the path of the trait...

}

// We should be in type context, so format as `Foo<Bar>` instead of `Foo::<Bar>`.

// Do we actually format expressions?

match generic_args.parenthesized {

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

}

// First argument will be a tuple, which already includes the parentheses.

// If the tuple only contains 1 item, write it manually to avoid the trailing `,`.

let tuple = match generic_args.args[0] {

TypeRef::Tuple(it) => Some(it),

_ => None,

},

if let Some(v) = tuple {

if v.len() == 1 {

write!(f, "(")?;

write!(f, ")")?;

} else {

}

}

if let Some(ret) = generic_args.bindings[0].type_ref {

write!(f, " -> ")?;

}

}

}

let mut first = true;

// Skip the `Self` bound if exists. It's handled outside the loop.

for arg in &generic_args.args[generic_args.has_self_type as usize..] {

} else {

write!(f, ", ")?;

}

}

for binding in generic_args.bindings.iter() {

if first {

match &binding.type_ref {

Some(ty) => {

write!(f, " = ")?;

}

None => {

write!(f, ": ")?;

f.write_joined(

" + ",

)?;

}

}

}

fn hir_fmt(

&self,

f: &mut HirFormatter<'_>,

) -> Result<(), HirDisplayError> {

match self {

}

write!(f, "{}", lifetime.name.display(f.db.upcast(), f.edition()))

}

}