feat: implement async functionality

1 files changed, 35 insertions, 0 deletions

diff --git a/src/interfaces/async_injectable.rs b/src/interfaces/async_injectable.rs
new file mode 100644
index 0000000..badc3c5
--- /dev/null
+++ b/src/interfaces/async_injectable.rs
@@ -0,0 +1,35 @@
+//! Interface for structs that can be injected into or be injected to.
+//!
+//! *This module is only available if Syrette is built with the "async" feature.*
+use std::fmt::Debug;
+
+use async_trait::async_trait;
+
+use crate::async_di_container::AsyncDIContainer;
+use crate::errors::injectable::InjectableError;
+use crate::libs::intertrait::CastFromSync;
+use crate::ptr::TransientPtr;
+
+/// Interface for structs that can be injected into or be injected to.
+#[async_trait]
+pub trait AsyncInjectable: CastFromSync
+{
+    /// Resolves the dependencies of the injectable.
+    ///
+    /// # Errors
+    /// Will return `Err` if resolving the dependencies fails.
+    async fn resolve(
+        di_container: &AsyncDIContainer,
+        dependency_history: Vec<&'static str>,
+    ) -> Result<TransientPtr<Self>, InjectableError>
+    where
+        Self: Sized;
+}
+
+impl Debug for dyn AsyncInjectable
+{
+    fn fmt(&self, f: &mut std::fmt::Formatter<'_>) -> std::fmt::Result
+    {
+        f.write_str("{}")
+    }
+}