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Reserved keywords can't be patterns

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This commit is contained in:
Richard Feldman 2020-07-17 19:39:13 -04:00
parent ef010d4dec
commit 152e06186b
1 changed files with 12 additions and 7 deletions
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19
compiler/parse/src/expr.rs
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@ -853,13 +853,18 @@ fn parse_closure_param<'a>(
}
fn loc_pattern<'a>(min_indent: u16) -> impl Parser<'a, Located<Pattern<'a>>> {
one_of!(
loc_parenthetical_pattern(min_indent),
loc!(underscore_pattern()),
loc_ident_pattern(min_indent),
loc!(record_destructure(min_indent)),
loc!(string_pattern()),
loc!(number_pattern())
skip_first!(
// If this is a reserved keyword ("if", "then", "case, "when"), then
// it is not a pattern!
not(reserved_keyword()),
one_of!(
loc_parenthetical_pattern(min_indent),
loc!(underscore_pattern()),
loc_ident_pattern(min_indent),
loc!(record_destructure(min_indent)),
loc!(string_pattern()),
loc!(number_pattern())
)
)
}