more parser annotation

This commit is contained in:
Greg Shuflin 2024-01-30 00:15:00 -08:00
parent b042e06084
commit 4e813a7efd
4 changed files with 22 additions and 5 deletions

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@ -28,6 +28,12 @@ pub trait ParserExtension<I, O, E>: Parser<I, O, E> {
fn then_ignore<O2, P: Parser<I, O2, E>>(self, next: P) -> impl Parser<I, O, E>;
fn ignore_then<O2, P: Parser<I, O2, E>>(self, next: P) -> impl Parser<I, O2, E>;
fn surrounded_by<O2>(self, surrounding: impl Parser<I, O2, E>) -> impl Parser<I, O, E>;
fn to_anno(self) -> AnnotatedParser<Self, I, O, E>
where
Self: Sized,
{
AnnotatedParser::new(self)
}
fn to_named(self, name: &str) -> AnnotatedParser<Self, I, O, E>
where
Self: Sized,

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@ -1,10 +1,11 @@
use crate::{ParseResult, Parser};
use crate::{representation::Representation, ParseResult, Parser, ParserExtension};
pub fn literal(expected: &'static str) -> impl Fn(&str) -> ParseResult<&str, &str, ()> {
move |input| match input.get(0..expected.len()) {
pub fn literal<'a>(expected: &'static str) -> impl Parser<&'a str, &'a str, ()> {
let p = move |input: &'a str| match input.get(0..expected.len()) {
Some(next) if next == expected => Ok((next, &input[expected.len()..])),
_ => Err(((), input)),
}
};
p.to_anno().with_repr(Representation::new())
}
pub fn literal_char<'a>(expected: char) -> impl Parser<&'a str, char, ()> {

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@ -1,2 +1,12 @@
#[derive(Debug)]
pub struct Representation {}
impl Representation {
pub fn show(&self) {
println!("Not done");
}
pub fn new() -> Self {
Self {}
}
}

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@ -4,7 +4,7 @@ use super::*;
#[test]
fn parsing() {
let (parsed, rest) = literal("a")("a yolo").unwrap();
let (parsed, rest) = literal("a").parse("a yolo").unwrap();
assert_eq!(parsed, "a");
assert_eq!(rest, " yolo");
}