buffalo.cs

buffalo.cs

using System;
using System.Runtime.CompilerServices;

class await {
    async async async(async async) => await async(async(async));
}

[AsyncMethodBuilder(typeof(builder))]
delegate async async(async async);

static class util { 
   public static awaiter GetAwaiter(this await a) => throw null;
   public static awaiter GetAwaiter(this async a) => throw null;
}

class awaiter : INotifyCompletion {
    public bool IsCompleted => true;
    public void GetResult() { }
    public void OnCompleted(Action continuation) { }
}

class builder
{
    public builder() { }
    public static builder Create() => throw null;
    public void SetResult() { }
    public void SetException(Exception e) { }
    public void Start<TStateMachine>(ref TStateMachine stateMachine)
        where TStateMachine : IAsyncStateMachine => throw null;
    public async Task => throw null;
    public void AwaitOnCompleted<TAwaiter, TStateMachine>(
        ref TAwaiter awaiter, ref TStateMachine stateMachine)
        where TAwaiter : INotifyCompletion
        where TStateMachine : IAsyncStateMachine => throw null;
    public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(
        ref TAwaiter awaiter, ref TStateMachine stateMachine)
        where TAwaiter : ICriticalNotifyCompletion
        where TStateMachine : IAsyncStateMachine => throw null;
    public void SetStateMachine(IAsyncStateMachine stateMachine) => throw null;
}

https://en.wikipedia.org/wiki/Buffalo_buffalo_Buffalo_buffalo_buffalo_buffalo_Buffalo_buffalo

using System;
using System.Runtime.CompilerServices;

async async async(async async) => await async[async][async][async][async];

[AsyncMethodBuilder(typeof(builder))]
class async {
    public async this[async async] { get => null; }
}

static class util { 
   public static awaiter GetAwaiter(this async a) => throw null;
}

class awaiter : INotifyCompletion {
    public bool IsCompleted => true;
    public void GetResult() { }
    public void OnCompleted(Action continuation) { }
}

class builder
{
    public builder() { }
    public static builder Create() => throw null;
    public void SetResult() { }
    public void SetException(Exception e) { }
    public void Start<TStateMachine>(ref TStateMachine stateMachine)
        where TStateMachine : IAsyncStateMachine => throw null;
    public async Task => throw null;
    public void AwaitOnCompleted<TAwaiter, TStateMachine>(
        ref TAwaiter awaiter, ref TStateMachine stateMachine)
        where TAwaiter : INotifyCompletion
        where TStateMachine : IAsyncStateMachine => throw null;
    public void AwaitUnsafeOnCompleted<TAwaiter, TStateMachine>(
        ref TAwaiter awaiter, ref TStateMachine stateMachine)
        where TAwaiter : ICriticalNotifyCompletion
        where TStateMachine : IAsyncStateMachine => throw null;
    public void SetStateMachine(IAsyncStateMachine stateMachine) => throw null;
}