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use std::any::{type_name, Any};
use std::fmt::Debug;
use crate::castable_function::AnyCastableFunction;
use crate::ptr::TransientPtr;
/// Interface for any threadsafe castable function.
pub trait AnyThreadsafeCastableFunction:
AnyCastableFunction + Send + Sync + Debug
{
}
pub struct ThreadsafeCastableFunction<ReturnInterface, DIContainerT>
where
DIContainerT: 'static,
ReturnInterface: 'static + ?Sized,
{
func: &'static (dyn Fn(&DIContainerT) -> TransientPtr<ReturnInterface> + Send + Sync),
}
impl<ReturnInterface, DIContainerT>
ThreadsafeCastableFunction<ReturnInterface, DIContainerT>
where
DIContainerT: 'static,
ReturnInterface: 'static + ?Sized,
{
pub fn new(
func: &'static (dyn Fn(&DIContainerT) -> TransientPtr<ReturnInterface>
+ Send
+ Sync),
) -> Self
{
Self { func }
}
pub fn call(&self, di_container: &DIContainerT) -> TransientPtr<ReturnInterface>
{
(self.func)(di_container)
}
}
impl<ReturnInterface, DIContainerT> AnyCastableFunction
for ThreadsafeCastableFunction<ReturnInterface, DIContainerT>
where
DIContainerT: 'static,
ReturnInterface: 'static + ?Sized,
{
fn as_any(&self) -> &dyn Any
{
self
}
}
impl<ReturnInterface, DIContainerT> AnyThreadsafeCastableFunction
for ThreadsafeCastableFunction<ReturnInterface, DIContainerT>
where
DIContainerT: 'static,
ReturnInterface: 'static + ?Sized,
{
}
impl<ReturnInterface, DIContainerT> Debug
for ThreadsafeCastableFunction<ReturnInterface, DIContainerT>
where
DIContainerT: 'static,
ReturnInterface: 'static + ?Sized,
{
#[cfg(not(tarpaulin_include))]
fn fmt(&self, formatter: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
{
let ret = type_name::<TransientPtr<ReturnInterface>>();
formatter.write_fmt(format_args!(
"ThreadsafeCastableFunction(&AsyncDIContainer) -> {ret} {{ ... }}",
))
}
}
#[cfg(test)]
mod tests
{
use super::*;
use crate::di_container::asynchronous::MockAsyncDIContainer;
#[derive(Debug, PartialEq, Eq)]
struct Bacon
{
heal_amount: u32,
}
#[test]
fn can_call()
{
let castable_function =
ThreadsafeCastableFunction::new(&|_: &MockAsyncDIContainer| {
TransientPtr::new(Bacon { heal_amount: 27 })
});
let mock_di_container = MockAsyncDIContainer::new();
let output = castable_function.call(&mock_di_container);
assert_eq!(output, TransientPtr::new(Bacon { heal_amount: 27 }));
}
}
|
