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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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7
crates/compiler/parse/src/pattern.rs
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@ -5,7 +5,7 @@ use crate::blankspace::{space0_before_optional_after, space0_e, spaces, spaces_b
use crate::ident::{lowercase_ident, parse_ident, Accessor, Ident};
use crate::keyword;
use crate::parser::{
self, backtrackable, byte, collection_trailing_sep_e, fail_when, loc, map, map_with_arena,
self, and, backtrackable, byte, collection_trailing_sep_e, fail_when, loc, map, map_with_arena,
optional, skip_first, skip_second, specialize_err, specialize_err_ref, then, three_bytes,
two_bytes, zero_or_more, EPattern, PInParens, PList, PRecord, Parser,
};
@ -551,7 +551,10 @@ fn record_pattern_field<'a>() -> impl Parser<'a, Loc<Pattern<'a>>, PRecord<'a>>
// (This is true in both literals and types.)
let (_, opt_loc_val, state) = optional(either(
byte(b':', PRecord::Colon),
byte(b'?', PRecord::Optional),
and(
byte(b'?', PRecord::Optional),
optional(byte(b'?', PRecord::Optional)),
),
))
.parse(arena, state, min_indent)?;