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more choice impls

This commit is contained in:
Greg Shuflin 2024-01-29 02:57:09 -08:00
parent 05c9ada7c6
commit ea6a513572
1 changed files with 25 additions and 0 deletions
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25
src/choice.rs
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@ -47,3 +47,28 @@ where
choice_loop(input, &[&self.0, &self.1, &self.2])
}
}
impl<P1, P2, P3, P4, I, O, E> Choice<I, O, E> for (P1, P2, P3, P4)
where
P1: Parser<I, O, E>,
P2: Parser<I, O, E>,
P3: Parser<I, O, E>,
P4: Parser<I, O, E>,
{
fn parse_choice(&self, input: I) -> Result<(O, I), (E, I)> {
choice_loop(input, &[&self.0, &self.1, &self.2, &self.3])
}
}
impl<P1, P2, P3, P4, P5, I, O, E> Choice<I, O, E> for (P1, P2, P3, P4, P5)
where
P1: Parser<I, O, E>,
P2: Parser<I, O, E>,
P3: Parser<I, O, E>,
P4: Parser<I, O, E>,
P5: Parser<I, O, E>,
{
fn parse_choice(&self, input: I) -> Result<(O, I), (E, I)> {
choice_loop(input, &[&self.0, &self.1, &self.2, &self.3, &self.4])
}
}