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Support '??' syntax for optional record fields

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Anthony Bullard 2025-01-04 14:26:20 -06:00
parent 3d4dd5b583
commit a24fe430b4
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21 changed files with 42 additions and 43 deletions
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6
crates/compiler/parse/src/expr.rs
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@ -2082,6 +2082,7 @@ pub fn merge_spaces<'a>(
/// If the given Expr would parse the same way as a valid Pattern, convert it.
/// Example: (foo) could be either an Expr::Var("foo") or Pattern::Identifier("foo")
fn expr_to_pattern_help<'a>(arena: &'a Bump, expr: &Expr<'a>) -> Result<Pattern<'a>, ()> {
println!("expr_to_pattern_help");
let mut expr = expr.extract_spaces();
while let Expr::ParensAround(loc_expr) = &expr.item {
@ -3587,7 +3588,10 @@ pub fn record_field<'a>() -> impl Parser<'a, RecordField<'a>, ERecord<'a>> {
optional(either(
and(byte(b':', ERecord::Colon), record_field_expr()),
and(
byte(b'?', ERecord::QuestionMark),
and(
byte(b'?', ERecord::QuestionMark),
optional(byte(b'?', ERecord::QuestionMark)),
),
spaces_before(specialize_err_ref(ERecord::Expr, loc_expr(true))),
),
)),