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[fine] Empty blocks generate nothing

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This commit is contained in:
John Doty 2024-01-06 11:00:31 -08:00
parent 8835d9eaf2
commit 56e4be9a5b
3 changed files with 18 additions and 5 deletions
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11
fine/src/semantics.rs
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@ -347,10 +347,10 @@ impl<'a> Semantics<'a> {
return None;
}
// if tree.children.len() == 2 {
// // Empty blocks generate Nothing.
// return Some(Type::Nothing);
// }
if tree.children.len() == 2 {
// Empty blocks generate Nothing.
return Some(Type::Nothing);
}
// The type of the block is the type of the last expression.
// (But the last child is the closing brace probably?)
@ -359,6 +359,9 @@ impl<'a> Semantics<'a> {
let mut is_unreachable = false;
for i in 1..last_index {
// TODO: if `is_unreachable` here then we actually have
// unreachable code here! We should warn about it I guess.
is_unreachable = self
.type_of(tree.nth_tree(i)?)
.map(|t| matches!(t, Type::Unreachable))