dyadic_rationals/
id.rs

1use pretty::{Pretty, DocAllocator, BoxAllocator, DocBuilder};
2use std::fmt;
3
4#[derive(Clone, Hash, Ord, PartialOrd, Eq, PartialEq)]
5pub struct Id(char);
6
7#[cfg(test)] use arbitrary::{Unstructured, Arbitrary};
8
9impl<'a, D, A> Pretty<'a, D, A> for Id
10where
11    D: DocAllocator<'a, A>,
12    D::Doc: Clone,
13    A: 'a + Clone,
14{
15    fn pretty(self, allocator: &'a D) -> DocBuilder<'a, D, A> {
16        allocator.text(self.0.to_string())
17    }
18}
19
20#[cfg(test)]
21impl<'a> Arbitrary<'a> for Id {
22    fn arbitrary(u: &mut Unstructured<'a>) -> arbitrary::Result<Id, arbitrary::Error> {
23        let c = u.int_in_range(0..=25)?;
24        Ok(Id((b'a' + c) as char))
25    }
26}
27
28/// Display instance calls the pretty printer
29impl<'a> fmt::Display for Id {
30    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
31        <Id as Pretty<'_, BoxAllocator, ()>>::pretty(self.clone(), &BoxAllocator)
32            .1
33            .render_fmt(4, f)
34    }
35}
36
37impl From<char> for Id {
38    fn from(s: char) -> Self {
39        Id(s)
40    }
41}
42
43impl<'a> fmt::Debug for Id {
44    fn fmt(&self, f: &mut fmt::Formatter<'_>) -> fmt::Result {
45        write!(f, "{}", self)
46    }
47}
48
dyadic_rationals/id.rs

dyadic_rationals/
id.rs
