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Remove WhereClause::Error

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Chalk doesn't have it, and judging from the removed code, it wasn't
useful anyway.
This commit is contained in:
Florian Diebold 2021-03-20 10:51:00 +01:00
parent 7a5fb37cf1
commit 8e7e405f6a
7 changed files with 8 additions and 42 deletions
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11
crates/hir_ty/src/lib.rs
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@ -569,16 +569,9 @@ pub enum WhereClause {
Implemented(TraitRef),
/// An associated type bindings like in `Iterator<Item = T>`.
AliasEq(AliasEq),
/// We couldn't resolve the trait reference. (If some type parameters can't
/// be resolved, they will just be Unknown).
Error,
}
impl WhereClause {
pub fn is_error(&self) -> bool {
matches!(self, WhereClause::Error)
}
pub fn is_implemented(&self) -> bool {
matches!(self, WhereClause::Implemented(_))
}
@ -589,7 +582,7 @@ impl WhereClause {
WhereClause::AliasEq(AliasEq { alias: AliasTy::Projection(proj), .. }) => {
Some(proj.trait_ref(db))
}
WhereClause::AliasEq(_) | WhereClause::Error => None,
WhereClause::AliasEq(_) => None,
}
}
}
@ -599,7 +592,6 @@ impl TypeWalk for WhereClause {
match self {
WhereClause::Implemented(trait_ref) => trait_ref.walk(f),
WhereClause::AliasEq(alias_eq) => alias_eq.walk(f),
WhereClause::Error => {}
}
}
@ -611,7 +603,6 @@ impl TypeWalk for WhereClause {
match self {
WhereClause::Implemented(trait_ref) => trait_ref.walk_mut_binders(f, binders),
WhereClause::AliasEq(alias_eq) => alias_eq.walk_mut_binders(f, binders),
WhereClause::Error => {}
}
}
}