state_validation/dynamic/
state_filter.rs

1use crate::StateFilter;
2
3pub struct DynStateFilter<State, Input, ValidOutput>(
4    for<'a> fn(&State, Input) -> Result<ValidOutput, Box<dyn std::error::Error>>,
5);
6
7impl<State, Input, ValidOutput> DynStateFilter<State, Input, ValidOutput> {
8    pub fn new<T: StateFilter<State, Input>>() -> Self
9    where
10        T::ValidOutput: Into<ValidOutput>,
11        T::Error: 'static,
12    {
13        DynStateFilter(|state, input| match T::filter(state, input) {
14            Ok(v) => Ok(v.into()),
15            Err(e) => Err(Box::new(e)),
16        })
17    }
18    pub fn filter(
19        &self,
20        state: &State,
21        input: Input,
22    ) -> Result<ValidOutput, Box<dyn std::error::Error>> {
23        (self.0)(state, input)
24    }
25}
26impl<State, Input> DynStateFilter<State, Input, Box<dyn std::any::Any>> {
27    pub fn new_with_any_output<T: StateFilter<State, Input>>() -> Self
28    where
29        T::ValidOutput: 'static,
30        T::Error: 'static,
31    {
32        DynStateFilter(|state, input| match T::filter(state, input) {
33            Ok(v) => Ok(Box::new(v)),
34            Err(e) => Err(Box::new(e)),
35        })
36    }
37}
38
39impl<State, Input, ValidOutput> Clone for DynStateFilter<State, Input, ValidOutput> {
40    fn clone(&self) -> Self {
41        DynStateFilter(self.0)
42    }
43}
state_validation/dynamic/state_filter.rs

state_validation/dynamic/
state_filter.rs
