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fix: union type bug (2)

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This commit is contained in:
Shunsuke Shibayama 2024-09-15 18:09:09 +09:00
parent 3b9bbdf1a5
commit 461e91703a
5 changed files with 73 additions and 54 deletions
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18
crates/erg_compiler/context/compare.rs
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@ -824,7 +824,23 @@ impl Context {
(Or(ors), rhs) => ors.iter().any(|or| self.supertype_of(or, rhs)),
// Int :> (Nat or Str) == Int :> Nat && Int :> Str == false
(lhs, Or(ors)) => ors.iter().all(|or| self.supertype_of(lhs, or)),
(And(l), And(r)) => r.iter().any(|r| l.iter().all(|l| self.supertype_of(l, r))),
// Hash and Eq :> HashEq and ... == true
// Add(T) and Eq :> Add(Int) and Eq == true
(And(l), And(r)) => {
if r.iter().any(|r| l.iter().all(|l| self.supertype_of(l, r))) {
return true;
}
if l.len() == r.len() {
let mut r = r.clone();
for _ in 1..l.len() {
if l.iter().zip(&r).all(|(l, r)| self.supertype_of(l, r)) {
return true;
}
r.rotate_left(1);
}
}
false
}
// (Num and Show) :> Show == false
(And(ands), rhs) => ands.iter().all(|and| self.supertype_of(and, rhs)),
// Show :> (Num and Show) == true