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fix: trait parameter bug

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This commit is contained in:
Shunsuke Shibayama 2024-04-28 18:52:17 +09:00
parent 02a67567d3
commit 0ffa23affd
7 changed files with 73 additions and 32 deletions
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5
crates/erg_compiler/context/unify.rs
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@ -843,10 +843,10 @@ impl<'c, 'l, 'u, L: Locational> Unifier<'c, 'l, 'u, L> {
/// sub_unify([?T; 0], Mutate): (/* OK */)
/// ```
fn sub_unify(&self, maybe_sub: &Type, maybe_sup: &Type) -> TyCheckResult<()> {
log!(info "trying {}sub_unify:\nmaybe_sub: {maybe_sub}\nmaybe_sup: {maybe_sup}", self.undoable.map_or("", |_| "undoable"));
log!(info "trying {}sub_unify:\nmaybe_sub: {maybe_sub}\nmaybe_sup: {maybe_sup}", self.undoable.map_or("", |_| "undoable_"));
// In this case, there is no new information to be gained
// この場合、特に新しく得られる情報はない
if maybe_sub == &Type::Never || maybe_sup == &Type::Obj || maybe_sup == maybe_sub {
if maybe_sub == &Type::Never || maybe_sup == &Type::Obj || maybe_sup.addr_eq(maybe_sub) {
log!(info "no-op:\nmaybe_sub: {maybe_sub}\nmaybe_sup: {maybe_sup}");
return Ok(());
}
@ -1640,6 +1640,7 @@ impl<'c, 'l, 'u, L: Locational> Unifier<'c, 'l, 'u, L> {
list.push_tp(l_maybe_sub);
list.push_tp(r_maybe_sup);
}
// debug_power_assert!(variances.len(), >=, sup_params.len(), "{sub_instance} / {maybe_sup}");
let unifier = Unifier::new(self.ctx, self.loc, Some(&list), false, None);
for ((l_maybe_sub, r_maybe_sup), variance) in sub_params
.iter()