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initial parser signature

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This commit is contained in:
Anand Balakrishnan 2023-09-29 13:09:04 -07:00
parent cc423a0bec
commit b2e56594b0
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3 changed files with 26 additions and 5 deletions
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9
argus-parser/src/lexer.rs
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@ -1,9 +1,10 @@
use std::{env, fmt, fs};
use std::fmt;
use ariadne::{sources, Color, Label, Report, ReportKind};
use chumsky::prelude::*;
pub type Span = SimpleSpan<usize>;
pub type Output<'a> = Vec<(Token<'a>, Span)>;
pub type Error<'a> = extra::Err<Rich<'a, char, Span>>;
#[derive(Clone, Debug, PartialEq, Eq)]
pub enum Token<'src> {
@ -76,7 +77,7 @@ impl<'src> fmt::Display for Token<'src> {
}
}
pub fn lexer<'src>() -> impl Parser<'src, &'src str, Vec<(Token<'src>, Span)>, extra::Err<Rich<'src, char, Span>>> {
pub fn lexer<'src>() -> impl Parser<'src, &'src str, Output<'src>, Error<'src>> {
// A parser for numbers
let digits = text::digits(10).slice();
@ -173,8 +174,6 @@ mod tests {
#[test]
fn simple_test() {
use Token::*;
type Output<'a> = Vec<(Token<'a>, Span)>;
type MyErr<'a> = extra::Err<Rich<'a, char, Span>>;
let cases = [
("true", vec![(Bool(true), Span::new(0, 4))]),
("false", vec![(Bool(false), Span::new(0, 5))]),