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fix: structural type check

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This commit is contained in:
Shunsuke Shibayama 2024-08-09 13:38:04 +09:00
parent f337aefdda
commit 0875c7e5c9
3 changed files with 59 additions and 3 deletions
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16
crates/erg_compiler/context/compare.rs
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@ -869,6 +869,22 @@ impl Context {
Type::NamedTuple(fields) => fields.iter().cloned().collect(),
Type::Refinement(refine) => self.fields(&refine.t),
Type::Structural(t) => self.fields(t),
Type::Or(l, r) => {
let l_fields = self.fields(l);
let r_fields = self.fields(r);
let l_field_names = l_fields.keys().collect::<Set<_>>();
let r_field_names = r_fields.keys().collect::<Set<_>>();
let field_names = l_field_names.intersection(&r_field_names);
let mut fields = Dict::new();
for (name, l_t, r_t) in field_names
.iter()
.map(|&name| (name, &l_fields[name], &r_fields[name]))
{
let union = self.union(l_t, r_t);
fields.insert(name.clone(), union);
}
fields
}
other => {
let Some(ctx) = self.get_nominal_type_ctx(other) else {
return Dict::new();