meh

Maintenance/Extensions/CompletableFutureExtensions.cs

@@ -0,0 +1,31 @@
+using java.util.concurrent;
+using java.util.function;
+using Torch.Utils;
+
+namespace Maintenance.Extensions;
+
+public static class CompletableFutureExtensions
+{
+    [ReflectedStaticMethod(Type = typeof(Consumer), Name = "<default>andThen")]
+    private static readonly Func<Consumer, Consumer, Consumer> AndThenDefault = null!;
+    
+    public static Task<T> ToTask<T>(this CompletableFuture completableFuture)
+    {
+        var taskCompletionSource = new TaskCompletionSource<T>();
+
+        completableFuture.thenAccept(new TaskConsumer<T>(taskCompletionSource));
+
+        return taskCompletionSource.Task;
+    }
+
+    private sealed class TaskConsumer<T>(TaskCompletionSource<T> completionSource) : Consumer
+    {
+        
+        public void accept(object t)
+        {
+            completionSource.SetResult((T)t);
+        }
+
+        public Consumer andThen(Consumer after) => AndThenDefault(this, after);
+    }
+}