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Desugar away named nil in table literals

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This commit is contained in:
Joscha 2022-11-22 17:49:12 +01:00
parent 39099037a5
commit 736174d470
1 changed files with 12 additions and 2 deletions
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14
src/desugar/lit.rs
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@ -1,4 +1,4 @@
use crate::ast::{Lit, TableLit, TableLitElem};
use crate::ast::{Expr, Lit, TableLit, TableLitElem};
impl TableLitElem {
pub fn desugar(self) -> (Self, bool) {
@ -32,7 +32,17 @@ impl TableLitElem {
impl TableLit {
pub fn desugar(self) -> (Self, bool) {
let (elems, desugared) = self.0.desugar(|e| e.desugar());
(elems.table_lit(), desugared)
if desugared {
(elems.table_lit(), true)
} else {
let (elems, removed) = elems.remove_map(|e| match e {
TableLitElem::Named { value, .. } if matches!(*value, Expr::Lit(Lit::Nil(_))) => {
Err(())
}
e => Ok(e),
});
(elems.table_lit(), !removed.is_empty())
}
}
}