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Remove another helper

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This commit is contained in:
Aleksey Kladov 2019-11-26 17:42:21 +03:00
parent 25b32f9d68
commit 24b1e79af5
3 changed files with 27 additions and 25 deletions
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15
crates/ra_hir/src/code_model.rs
View file

@ -28,8 +28,8 @@ use crate::{
expr::{BindingAnnotation, Body, BodySourceMap, ExprValidator, Pat, PatId},
ty::display::HirFormatter,
ty::{
self, utils::all_super_traits, InEnvironment, InferenceResult, Namespace, TraitEnvironment,
TraitRef, Ty, TypeCtor, TypeWalk,
self, InEnvironment, InferenceResult, Namespace, TraitEnvironment, TraitRef, Ty, TypeCtor,
TypeWalk,
},
CallableDef, Either, HirDisplay, Name, Source,
};
@ -740,17 +740,6 @@ impl Trait {
db.trait_data(self.id).items.iter().map(|(_name, it)| (*it).into()).collect()
}
pub fn associated_type_by_name_including_super_traits(
self,
db: &impl HirDatabase,
name: &Name,
) -> Option<TypeAlias> {
all_super_traits(db, self.id)
.into_iter()
.find_map(|t| db.trait_data(t).associated_type_by_name(name))
.map(TypeAlias::from)
}
pub fn trait_ref(self, db: &impl HirDatabase) -> TraitRef {
TraitRef::for_trait(db, self)
}

23
crates/ra_hir/src/ty/lower.rs
View file

@ -28,7 +28,7 @@ use crate::{
db::HirDatabase,
ty::{
primitive::{FloatTy, IntTy},
utils::all_super_traits,
utils::{all_super_traits, associated_type_by_name_including_super_traits},
Adt,
},
util::make_mut_slice,
@ -170,14 +170,16 @@ impl Ty {
);
return if remaining_segments.len() == 1 {
let segment = &remaining_segments[0];
match trait_ref
.trait_
.associated_type_by_name_including_super_traits(db, &segment.name)
{
let associated_ty = associated_type_by_name_including_super_traits(
db,
trait_ref.trait_.id,
&segment.name,
);
match associated_ty {
Some(associated_ty) => {
// FIXME handle type parameters on the segment
Ty::Projection(ProjectionTy {
associated_ty: associated_ty.id,
associated_ty,
parameters: trait_ref.substs,
})
}
@ -508,10 +510,11 @@ fn assoc_type_bindings_from_type_bound<'a>(
.flat_map(|args_and_bindings| args_and_bindings.bindings.iter())
.map(move |(name, type_ref)| {
let associated_ty =
match trait_ref.trait_.associated_type_by_name_including_super_traits(db, &name) {
None => return GenericPredicate::Error,
Some(t) => t.id,
};
associated_type_by_name_including_super_traits(db, trait_ref.trait_.id, &name);
let associated_ty = match associated_ty {
None => return GenericPredicate::Error,
Some(t) => t,
};
let projection_ty =
ProjectionTy { associated_ty, parameters: trait_ref.substs.clone() };
let ty = Ty::from_hir(db, resolver, type_ref);

14
crates/ra_hir/src/ty/utils.rs
View file

@ -5,9 +5,9 @@ use hir_def::{
db::DefDatabase,
resolver::{HasResolver, TypeNs},
type_ref::TypeRef,
TraitId,
TraitId, TypeAliasId,
};
use hir_expand::name;
use hir_expand::name::{self, Name};
// FIXME: this is wrong, b/c it can't express `trait T: PartialEq<()>`.
// We should return a `TraitREf` here.
@ -51,3 +51,13 @@ pub(crate) fn all_super_traits(db: &impl DefDatabase, trait_: TraitId) -> Vec<Tr
}
result
}
pub(crate) fn associated_type_by_name_including_super_traits(
db: &impl DefDatabase,
trait_: TraitId,
name: &Name,
) -> Option<TypeAliasId> {
all_super_traits(db, trait_)
.into_iter()
.find_map(|t| db.trait_data(t).associated_type_by_name(name))
}