1 | use serde::de::{self, Deserialize, Deserializer, Visitor}; |
2 | use serde_derive::Deserialize; |
3 | use std::fmt; |
4 | |
5 | #[derive(Deserialize)] |
6 | #[serde(deny_unknown_fields)] |
7 | pub struct InheritEdition { |
8 | pub workspace: True, |
9 | } |
10 | |
11 | pub struct True; |
12 | |
13 | impl<'de> Deserialize<'de> for True { |
14 | fn deserialize<D>(deserializer: D) -> Result<Self, D::Error> |
15 | where |
16 | D: Deserializer<'de>, |
17 | { |
18 | deserializer.deserialize_bool(True) |
19 | } |
20 | } |
21 | |
22 | impl<'de> Visitor<'de> for True { |
23 | type Value = True; |
24 | |
25 | fn expecting(&self, formatter: &mut fmt::Formatter) -> fmt::Result { |
26 | formatter.write_str("bool" ) |
27 | } |
28 | |
29 | fn visit_bool<E>(self, b: bool) -> Result<Self::Value, E> |
30 | where |
31 | E: de::Error, |
32 | { |
33 | if b { |
34 | Ok(True) |
35 | } else { |
36 | Err(de::Error::custom( |
37 | "workspace=false is unsupported for package.edition" , |
38 | )) |
39 | } |
40 | } |
41 | } |
42 | |