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Split float literal tokens at the .

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This commit is contained in:
Jonas Schievink 2022-05-04 16:51:05 +02:00
parent 502c519e7d
commit 1bc3305d95
23 changed files with 157 additions and 72 deletions
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14
crates/parser/src/grammar/expressions/atom.rs
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@ -17,7 +17,7 @@ pub(crate) const LITERAL_FIRST: TokenSet = TokenSet::new(&[
T![true],
T![false],
INT_NUMBER,
FLOAT_NUMBER,
FLOAT_NUMBER_PART,
BYTE,
CHAR,
STRING,
@ -29,11 +29,19 @@ pub(crate) fn literal(p: &mut Parser) -> Option<CompletedMarker> {
return None;
}
let m = p.start();
if p.at(FLOAT_NUMBER) {
if p.at(FLOAT_NUMBER_PART) {
// Floats can be up to 3 tokens: 2 `FLOAT_NUMBER_PART`s separated by 1 `DOT`
let f = p.start();
p.bump(FLOAT_NUMBER);
p.bump(FLOAT_NUMBER_PART);
if p.at(DOT) {
p.bump(DOT);
if p.at(FLOAT_NUMBER_PART) {
p.bump(FLOAT_NUMBER_PART);
}
}
f.complete(p, FLOAT_LITERAL);
} else {
// Everything else is just one token.
p.bump_any();
}
Some(m.complete(p, LITERAL))