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Parse basic operators

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This commit is contained in:
Richard Feldman 2019-09-17 04:25:39 -04:00
parent 8fcc9504af
commit 9863268793
4 changed files with 64 additions and 37 deletions
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24
src/parse/parser.rs
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@ -190,21 +190,6 @@ pub trait Parser<'a, Output> {
fn parse(&self, &'a Bump, State<'a>) -> ParseResult<'a, Output>;
}
pub struct BoxedParser<'a, Output> {
parser: &'a (dyn Parser<'a, Output> + 'a),
}
impl<'a, Output> BoxedParser<'a, Output> {
fn new<P>(arena: &'a Bump, parser: P) -> Self
where
P: Parser<'a, Output> + 'a,
{
BoxedParser {
parser: arena.alloc(parser),
}
}
}
impl<'a, F, Output> Parser<'a, Output> for F
where
F: Fn(&'a Bump, State<'a>) -> ParseResult<'a, Output>,
@ -221,15 +206,6 @@ where
move |_, state| Ok((value.clone(), state))
}
/// Needed for recursive parsers
pub fn lazy<'a, F, P, Val>(get_parser: F) -> impl Parser<'a, Val>
where
F: Fn() -> P,
P: Parser<'a, Val>,
{
move |arena, state| get_parser().parse(arena, state)
}
pub fn map<'a, P, F, Before, After>(parser: P, transform: F) -> impl Parser<'a, After>
where
P: Parser<'a, Before>,