Comment fixes / todos

This commit is contained in:
Florian Diebold 2020-02-02 13:43:04 +01:00 committed by Florian Diebold
parent 3397ca679f
commit 86348f5994
3 changed files with 8 additions and 6 deletions

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@ -587,6 +587,7 @@ impl<'a, D: HirDatabase> InferenceContext<'a, D> {
self.write_method_resolution(tgt_expr, func);
(ty, self.db.value_ty(func.into()), Some(generics(self.db, func.into())))
}
// TODO fix this
None => (receiver_ty, Binders::new(0, Ty::Unknown), None),
};
let substs = self.substs_for_method_call(def_generics, generic_args, &derefed_receiver_ty);

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@ -288,10 +288,12 @@ pub enum Ty {
Projection(ProjectionTy),
/// A type parameter; for example, `T` in `fn f<T>(x: T) {}
// TODO fix documentation
Param(TypeParamId),
/// A bound type variable. Used during trait resolution to represent Chalk
/// variables, and in `Dyn` and `Opaque` bounds to represent the `Self` type.
// TODO fix documentation
Bound(u32),
/// A type variable used during type checking. Not to be confused with a

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@ -37,10 +37,9 @@ pub struct TyLoweringContext<'a, DB: HirDatabase> {
pub db: &'a DB,
pub resolver: &'a Resolver,
/// Note: Conceptually, it's thinkable that we could be in a location where
/// some type params are quantified universally (and should be represented
/// as placeholders), and others are quantified existentially (and should be
/// converted to variables). I think in practice, this isn't possible
/// currently, so this should be fine for now.
/// some type params should be represented as placeholders, and others
/// should be converted to variables. I think in practice, this isn't
/// possible currently, so this should be fine for now.
pub type_param_mode: TypeParamLoweringMode,
pub impl_trait_mode: ImplTraitLoweringMode,
pub impl_trait_counter: std::cell::Cell<u16>,
@ -71,8 +70,8 @@ pub enum ImplTraitLoweringMode {
/// types of functions we're calling.
Opaque,
/// `impl Trait` gets lowered into a type variable. Used for argument
/// position impl Trait currently, since it allows us to support that
/// without Chalk.
/// position impl Trait when inside the respective function, since it allows
/// us to support that without Chalk.
Param,
/// `impl Trait` gets lowered into a variable that can unify with some
/// type. This is used in places where values flow 'in', i.e. for arguments