fnotation/
util.rs

1use bumpalo::Bump;
2use tattle::Reporter;
3
4use crate::{grammar::parse, lexer::lex, parser::Prec, FNtn};
5
6pub struct ParseConfig<'a> {
7    precedences: &'a [(&'a str, Prec)],
8    keywords: &'a [&'a str],
9}
10
11impl<'a> ParseConfig<'a> {
12    pub const fn new(precedences: &'a [(&'a str, Prec)], keywords: &'a [&'a str]) -> Self {
13        Self {
14            precedences,
15            keywords,
16        }
17    }
18
19    pub fn with_parsed<A, F: FnOnce(&FNtn) -> Option<A>>(
20        &self,
21        input: &str,
22        reporter: Reporter,
23        f: F,
24    ) -> Option<A> {
25        let precedences = self
26            .precedences
27            .iter()
28            .map(|(s, p)| (s.to_string(), *p))
29            .collect();
30        let keywords = self.keywords.iter().map(|s| s.to_string()).collect();
31        let tokens = lex(input, keywords, reporter.clone());
32        let arena = Bump::new();
33        let ast = parse(input, reporter.clone(), &precedences, &tokens, &arena);
34        if reporter.errored() {
35            None
36        } else {
37            f(ast)
38        }
39    }
40}
fnotation/util.rs

fnotation/
util.rs
