bjoernager/rust
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Add has_default to GenericParamDefKind::Const

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This currently creates a field which is always false on GenericParamDefKind for future use when
consts are permitted to have defaults

Update const_generics:default locations

Previously just ignored them, now actually do something about them.

Fix using type check instead of value

Add parsing

This adds all the necessary changes to lower const-generics defaults from parsing.

Change P<Expr> to AnonConst

This matches the arguments passed to instantiations of const generics, and makes it specific to
just anonymous constants.

Attempt to fix lowering bugs
This commit is contained in:
kadmin 2020-08-11 00:02:45 +00:00
parent 79e5814f45
commit e4e5db4e42
39 changed files with 158 additions and 77 deletions
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5
compiler/rustc_infer/src/infer/error_reporting/mod.rs
View file

@ -963,10 +963,11 @@ impl<'a, 'tcx> InferCtxt<'a, 'tcx> {
.rev()
.filter_map(|param| match param.kind {
ty::GenericParamDefKind::Lifetime => None,
ty::GenericParamDefKind::Type { has_default, .. } => {
ty::GenericParamDefKind::Type { has_default, .. }
| ty::GenericParamDefKind::Const { has_default } => {
Some((param.def_id, has_default))
}
ty::GenericParamDefKind::Const => None, // FIXME(const_generics_defaults)
})
.peekable();
let has_default = {