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Simplify parsing

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This commit is contained in:
Aleksey Kladov 2019-11-14 17:36:27 +03:00
parent 5c3ccc5508
commit ef02296b9f
2 changed files with 19 additions and 19 deletions
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34
crates/ra_parser/src/grammar/expressions/atom.rs
View file

@ -40,24 +40,24 @@ pub(crate) fn literal(p: &mut Parser) -> Option<CompletedMarker> {
// E.g. for after the break in `if break {}`, this should not match
pub(super) const ATOM_EXPR_FIRST: TokenSet =
LITERAL_FIRST.union(paths::PATH_FIRST).union(token_set![
L_PAREN,
L_CURLY,
L_BRACK,
PIPE,
MOVE_KW,
BOX_KW,
IF_KW,
WHILE_KW,
MATCH_KW,
UNSAFE_KW,
RETURN_KW,
BREAK_KW,
CONTINUE_KW,
T!['('],
T!['{'],
T!['['],
T![|],
T![move],
T![box],
T![if],
T![while],
T![match],
T![unsafe],
T![return],
T![break],
T![continue],
T![async],
T![try],
T![loop],
T![for],
LIFETIME,
ASYNC_KW,
TRY_KW,
LOOP_KW,
FOR_KW,
]);
const EXPR_RECOVERY_SET: TokenSet = token_set![LET_KW];

4
crates/ra_parser/src/token_set.rs
View file

@ -30,8 +30,8 @@ const fn mask(kind: SyntaxKind) -> u128 {
#[macro_export]
macro_rules! token_set {
($($t:ident),*) => { TokenSet::empty()$(.union(TokenSet::singleton($t)))* };
($($t:ident),* ,) => { token_set!($($t),*) };
($($t:expr),*) => { TokenSet::empty()$(.union(TokenSet::singleton($t)))* };
($($t:expr),* ,) => { token_set!($($t),*) };
}
#[test]