From 6813690e893bc461bd2be60509850a5a80454c6a Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Sun, 18 Sep 2022 20:20:53 +0200
Subject: feat: add binding async factories to async DI container

---
 src/lib.rs | 51 +++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

(limited to 'src/lib.rs')

diff --git a/src/lib.rs b/src/lib.rs
index 2155350..247f907 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -15,6 +15,9 @@ pub mod ptr;
 #[cfg(feature = "async")]
 pub mod async_di_container;
 
+#[cfg(feature = "async")]
+pub mod future;
+
 #[cfg(feature = "async")]
 pub use async_di_container::AsyncDIContainer;
 pub use di_container::DIContainer;
@@ -75,3 +78,51 @@ macro_rules! di_container_bind {
         syrette::declare_interface!($implementation -> $interface);
     };
 }
+
+/// Creates a async closure.
+///
+/// *This macro is only available if Syrette is built with the "async" feature.*
+///
+/// # Examples
+/// ```
+/// # use syrette::async_closure;
+/// #
+/// # async fn do_heavy_operation(timeout: u32, size: u32) -> String { String::new() }
+/// #
+/// # async fn do_other_heavy_operation(input: String) -> String { String::new() }
+/// #
+/// async_closure!(|timeout, size| {
+///     let value = do_heavy_operation(timeout, size).await;
+///
+///     let final_value = do_other_heavy_operation(value).await;
+///
+///     final_value
+/// });
+/// ```
+///
+/// expands to the following
+///
+/// ```rust
+/// # async fn do_heavy_operation(timeout: u32, size: u32) -> String { String::new() }
+/// #
+/// # async fn do_other_heavy_operation(input: String) -> String { String::new() }
+/// #
+/// Box::new(|timeout, size| {
+///     Box::pin(async move {
+///         let value = do_heavy_operation(timeout, size).await;
+///
+///         let final_value = do_other_heavy_operation(value).await;
+///
+///         final_value
+///     })
+/// });
+/// ```
+#[cfg(feature = "async")]
+#[macro_export]
+macro_rules! async_closure {
+    (|$($args: ident),*| { $($inner: stmt);* }) => {
+        Box::new(|$($args),*| {
+            Box::pin(async move { $($inner)* })
+        })
+    };
+}
-- 
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