ron/
extensions.rs

1use serde_derive::{Deserialize, Serialize};
2
3bitflags::bitflags! {
4    #[derive(Debug, Clone, Copy, PartialEq, Eq, PartialOrd, Ord, Hash, Serialize, Deserialize)]
5    pub struct Extensions: usize {
6        const UNWRAP_NEWTYPES = 0x1;
7        const IMPLICIT_SOME = 0x2;
8        const UNWRAP_VARIANT_NEWTYPES = 0x4;
9    }
10}
11
12impl Extensions {
13    /// Creates an extension flag from an ident.
14    pub fn from_ident(ident: &[u8]) -> Option<Extensions> {
15        match ident {
16            b"unwrap_newtypes" => Some(Extensions::UNWRAP_NEWTYPES),
17            b"implicit_some" => Some(Extensions::IMPLICIT_SOME),
18            b"unwrap_variant_newtypes" => Some(Extensions::UNWRAP_VARIANT_NEWTYPES),
19            _ => None,
20        }
21    }
22}
23
24impl Default for Extensions {
25    fn default() -> Self {
26        Extensions::empty()
27    }
28}
29
30#[cfg(test)]
31mod tests {
32    use super::Extensions;
33
34    fn roundtrip_extensions(ext: Extensions) {
35        let ron = crate::to_string(&ext).unwrap();
36        let ext2: Extensions = crate::from_str(&ron).unwrap();
37        assert_eq!(ext, ext2);
38    }
39
40    #[test]
41    fn test_extension_serde() {
42        roundtrip_extensions(Extensions::default());
43        roundtrip_extensions(Extensions::UNWRAP_NEWTYPES);
44        roundtrip_extensions(Extensions::IMPLICIT_SOME);
45        roundtrip_extensions(Extensions::UNWRAP_VARIANT_NEWTYPES);
46        roundtrip_extensions(Extensions::UNWRAP_NEWTYPES | Extensions::IMPLICIT_SOME);
47        roundtrip_extensions(Extensions::UNWRAP_NEWTYPES | Extensions::UNWRAP_VARIANT_NEWTYPES);
48        roundtrip_extensions(Extensions::IMPLICIT_SOME | Extensions::UNWRAP_VARIANT_NEWTYPES);
49        roundtrip_extensions(
50            Extensions::UNWRAP_NEWTYPES
51                | Extensions::IMPLICIT_SOME
52                | Extensions::UNWRAP_VARIANT_NEWTYPES,
53        );
54    }
55}
ron/extensions.rs

ron/
extensions.rs
