random_constructible/
rand_construct_env.rs

1crate::ix!();
2
3pub trait RandConstructEnvironment {
4    fn create_random<R>() -> R
5    where
6        R: RandConstructEnumWithEnv,
7        Self: RandConstructProbabilityMapProvider<R> + Sized,
8    {
9        R::random_with_env::<Self>()
10    }
11
12    fn create_random_uniform<R>() -> R
13    where
14        R: RandConstructEnumWithEnv,
15        Self: RandConstructProbabilityMapProvider<R> + Sized,
16    {
17        R::random_uniform_with_env::<Self>()
18    }
19}
20
21#[macro_export]
22macro_rules! rand_construct_env {
23    ($provider:ident => $enum:ty { $($variant:ident => $weight:expr),* $(,)? }) => {
24        impl $crate::RandConstructProbabilityMapProvider<$enum> for $provider {
25            fn probability_map() -> std::sync::Arc<std::collections::HashMap<$enum, f64>> {
26                use once_cell::sync::Lazy;
27                static PROBABILITY_MAP: Lazy<std::sync::Arc<std::collections::HashMap<$enum, f64>>> = Lazy::new(|| {
28                    let mut map = std::collections::HashMap::new();
29                    $(
30                        map.insert(<$enum>::$variant, $weight);
31                    )*
32                    std::sync::Arc::new(map)
33                });
34                std::sync::Arc::clone(&PROBABILITY_MAP)
35            }
36
37            fn uniform_probability_map() -> std::sync::Arc<std::collections::HashMap<$enum, f64>> {
38                use once_cell::sync::Lazy;
39                static UNIFORM_PROBABILITY_MAP: Lazy<std::sync::Arc<std::collections::HashMap<$enum, f64>>> = Lazy::new(|| {
40                    let mut map = std::collections::HashMap::new();
41                    $(
42                        map.insert(<$enum>::$variant, 1.0);
43                    )*
44                    std::sync::Arc::new(map)
45                });
46                std::sync::Arc::clone(&UNIFORM_PROBABILITY_MAP)
47            }
48        }
49    };
50}
random_constructible/rand_construct_env.rs

random_constructible/
rand_construct_env.rs
