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consider tags that are represented as NULL

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This commit is contained in:
Folkert 2021-07-03 14:15:05 +02:00
parent 5250e930aa
commit 6f48c9762b
2 changed files with 17 additions and 17 deletions
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10
compiler/mono/src/layout.rs
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@ -196,6 +196,16 @@ impl<'a> UnionLayout<'a> {
UnionLayout::NonNullableUnwrapped(_) | UnionLayout::NullableUnwrapped { .. } => false,
}
}
pub fn tag_is_null(&self, tag_id: u8) -> bool {
match self {
UnionLayout::NonRecursive(_)
| UnionLayout::NonNullableUnwrapped(_)
| UnionLayout::Recursive(_) => false,
UnionLayout::NullableWrapped { nullable_id, .. } => *nullable_id == tag_id as i64,
UnionLayout::NullableUnwrapped { nullable_id, .. } => *nullable_id == (tag_id != 0),
}
}
}
#[derive(Clone, Copy, Debug, PartialEq, Eq, Hash)]