reactivity

DTLib.csproj

@@ -55,6 +55,7 @@
     <Compile Include="Reactive\ReactiveSender.cs" />
     <Compile Include="Reactive\ReactiveStream.cs" />
     <Compile Include="Reactive\ReactiveProvider.cs" />
+    <Compile Include="Reactive\TimeSignedObject.cs" />
     <Compile Include="SecureRandom.cs" />
     <Compile Include="FrameworkFix.cs" />
     <Compile Include="TImer.cs" />
@@ -62,7 +63,6 @@
   </ItemGroup>
   <ItemGroup>
     <Content Include=".gitignore" />
-    <Content Include="DTLib.sln" />
   </ItemGroup>
   <ItemGroup>
     <None Include="README.md" />

EventHandlerAsync.cs

@@ -2,6 +2,10 @@
 
 namespace DTLib
 {
-    public delegate Task EventHandlerAsync<TEventArgs>(TEventArgs e);
+    // по идее это нужно, чтоб делать так: SomeEvent?.Invoke().Wait()
-    public delegate Task EventHandlerAsync();
+    public delegate Task EventHandlerAsyncDelegate();
+    public delegate Task EventHandlerAsyncDelegate<T>(T e);
+    public delegate Task EventHandlerAsyncDelegate<T0, T1>(T0 e0, T1 e1);
+    public delegate Task EventHandlerAsyncDelegate<T0, T1, T2>(T0 e0, T1 e1, T2 e2);
+    public delegate Task EventHandlerAsyncDelegate<T0, T1, T2, T3>(T0 e0, T1 e1, T2 e2, T3 e3);
 }

FrameworkFix.cs

@@ -152,6 +152,13 @@ namespace DTLib
                 b.Append(input);
             return b.ToString();
         }
+        public static string Multiply(this char input, int howMany)
+        {
+            StringBuilder b = new();
+            for (int i = 0; i < howMany; i++)
+                b.Append(input);
+            return b.ToString();
+        }
 
         public static void Throw(this Exception ex) => throw ex;
 
@@ -221,5 +228,13 @@ namespace DTLib
         {
             if (input is null) if_true();
         }
+
+        public static string AddZeroes<T>(this T number, int length)
+        {
+            var str = number.ToString();
+            //var diff = str.Length -length ;
+            //if (diff > 0) 
+            return Multiply('0', str.Length - length) + str;
+        }
     }
 }

Reactive/ReactiveListener.cs

@@ -8,42 +8,93 @@ namespace DTLib.Reactive
     {
         public ReactiveListener() { }
         public ReactiveListener(ReactiveStream<T> stream) : base(stream) { }
+        public ReactiveListener(ICollection<ReactiveStream<T>> streams) : base(streams) { }
 
-        public EventHandlerAsync<T> ElementAddedHandler;
+
-        public void SetHandler(EventHandlerAsync<T> handler)
+        public event Action<ReactiveStream<T>, T> ElementAddedEvent;
-        {
+        void ElementAdded(ReactiveStream<T> stream, TimeSignedObject<T> e) => ElementAdded(stream, e.Value);
-            lock (Stream) ElementAddedHandler = handler;
+        void ElementAdded(ReactiveStream<T> stream, T e) =>
-        }
+            Task.Run(() => ElementAddedEvent?.Invoke(stream, e));
-        public async Task ElementAdded(T e) => await Task.Run(() => ElementAddedHandler?.Invoke(e));
 
         public override void Join(ReactiveStream<T> stream)
         {
             base.Join(stream);
-            lock (Stream) stream.ElementAddedEvent += ElementAdded;
+            lock (Streams) stream.ElementAddedEvent += ElementAdded;
         }
 
         public override void Leave(ReactiveStream<T> stream)
         {
             base.Leave(stream);
-            lock (Stream) stream.ElementAddedEvent -= ElementAdded;
+            lock (Streams) stream.ElementAddedEvent -= ElementAdded;
         }
 
-        public T GetFirstElement() => Stream[0];
+        public T GetFirst()
-        public T GetLastElement() => Stream[Stream.Length - 1];
+        {
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
+            TimeSignedObject<T> rezult = null;
+            foreach (ReactiveStream<T> stream in Streams)
+                if (stream.Count != 0)
+                {
+                    TimeSignedObject<T> e = stream[0];
+                    if (rezult is null) rezult = e;
+                    else if (rezult.Time > e.Time) rezult = e;
+                }
+            return rezult.Value;
+        }
+        public T GetLast()
+        {
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
+            TimeSignedObject<T> rezult = null;
+            foreach (ReactiveStream<T> stream in Streams)
+                if (stream.Count != 0)
+                {
+                    TimeSignedObject<T> e = stream[stream.Count - 1];
+                    if (rezult is null) rezult = e;
+                    else if (rezult.Time < e.Time) rezult = e;
+                }
+            return rezult.Value;
+        }
 
-        public T FindOne(Func<T, bool> condition) =>
+        public T FindOne(Func<T, bool> condition)
-            /*foreach (T el in Stream)
+        {
-if (condition(el))
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
-return el;*/
+            foreach (ReactiveStream<T> stream in Streams)
-            default;
+                foreach (TimeSignedObject<T> el in stream)
+                    if (condition(el.Value))
+                        return el.Value;
+            return default;
+        }
+
+        public TimeSignedObject<T> FindOne(Func<TimeSignedObject<T>, bool> condition)
+        {
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
+            foreach (ReactiveStream<T> stream in Streams)
+                foreach (TimeSignedObject<T> el in stream)
+                    if (condition(el))
+                        return el;
+            return default;
+        }
 
         public List<T> FindAll(Func<T, bool> condition)
         {
-            List<T> elements = new();
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
-            /*foreach (T el in Stream)
+            List<T> rezults = new();
-                if (condition(el))
+            foreach (ReactiveStream<T> stream in Streams)
-                    elements.Add(el);*/
+                foreach (TimeSignedObject<T> el in stream)
-            return elements;
+                    if (condition(el.Value))
+                        rezults.Add(el.Value);
+            return rezults;
+        }
+
+        public List<TimeSignedObject<T>> FindAll(Func<TimeSignedObject<T>, bool> condition)
+        {
+            if (Streams.Count == 0) throw new Exception("ReactiveListener is not connected to any streams");
+            List<TimeSignedObject<T>> rezults = new();
+            foreach (ReactiveStream<T> stream in Streams)
+                foreach (TimeSignedObject<T> el in stream)
+                    if (condition(el))
+                        rezults.Add(el);
+            return rezults;
         }
     }
 }

Reactive/ReactiveProvider.cs

@@ -1,28 +1,35 @@
-namespace DTLib.Reactive
+using System;
+using System.Collections.Generic;
+using System.Linq;
+
+namespace DTLib.Reactive
 {
     public abstract class ReactiveProvider<T>
     {
-        protected ReactiveStream<T> Stream
+        protected List<ReactiveStream<T>> Streams
         {
             get
-            { lock (_stream) return _stream; }
+            { lock (_streams) return _streams; }
             set
-            { lock (_stream) _stream = value; }
+            { lock (_streams) _streams = value; }
         }
-        protected ReactiveStream<T> _stream;
+        private List<ReactiveStream<T>> _streams = new();
 
         public ReactiveProvider() { }
-
+        public ReactiveProvider(ReactiveStream<T> stream) => Streams.Add(stream);
-        public ReactiveProvider(ReactiveStream<T> stream) => Join(stream);
+        public ReactiveProvider(ICollection<ReactiveStream<T>> streams) => Streams = streams.ToList();
 
         public virtual void Join(ReactiveStream<T> stream)
         {
-            lock (Stream) Stream = stream;
+            if (IsConnetcedTo(stream)) throw new Exception("ReactiveListener is already connected to the stream");
+            Streams.Add(stream);
         }
 
         public virtual void Leave(ReactiveStream<T> stream)
         {
-            lock (Stream) Stream = null;
+            if (!Streams.Remove(stream)) throw new Exception("ReactiveListener is not connected to the stream");
         }
+
+        public bool IsConnetcedTo(ReactiveStream<T> stream) => Streams.Contains(stream);
     }
 }

Reactive/ReactiveSender.cs

@@ -1,14 +1,18 @@
-namespace DTLib.Reactive
+using System.Collections.Generic;
+
+namespace DTLib.Reactive
 {
     public class ReactiveSender<T> : ReactiveProvider<T>
     {
 
         public ReactiveSender() { }
         public ReactiveSender(ReactiveStream<T> stream) : base(stream) { }
+        public ReactiveSender(ICollection<ReactiveStream<T>> streams) : base(streams) { }
 
         public void Send(T e)
         {
-            lock (Stream) Stream.Add(e);
+            foreach (ReactiveStream<T> s in Streams)
+                s.Add(e);
         }
     }
 }

Reactive/ReactiveStream.cs

@@ -1,38 +1,74 @@
-using System.Collections.Generic;
+using System;
+using System.Collections;
+using System.Collections.Generic;
 
 namespace DTLib.Reactive
 {
-    public class ReactiveStream<T>
+    public class ReactiveStream<T> : IEnumerable<TimeSignedObject<T>>, IList<TimeSignedObject<T>>
     {
         public ReactiveStream() { }
 
-        List<T> _storage = new();
+        List<TimeSignedObject<T>> _storage = new();
-        List<T> Storage
+        List<TimeSignedObject<T>> Storage
         {
             get
-            { lock (Storage) return _storage; }
+            { lock (_storage) return _storage; }
         }
 
-        public int Length
+        public int Count => Storage.Count;
+
+        public TimeSignedObject<T> this[int index]
         {
-            get
+            get => Storage[index];
-            { lock (Storage) return Storage.Count; }
+            set => throw new NotImplementedException();
         }
 
-        public T this[int index]
+        public event Action<ReactiveStream<T>, TimeSignedObject<T>> ElementAddedEvent;
+        public void Add(TimeSignedObject<T> elem)
         {
-            get
+            Storage.Add(elem);
-            { lock (Storage) return Storage[index]; }
+            ElementAddedEvent?.Invoke(this, elem);
         }
+        public void Add(T elem) => Add(new TimeSignedObject<T>(elem));
 
-        internal event EventHandlerAsync<T> ElementAddedEvent;
+        public void Clear() => Storage.Clear();
+        public int IndexOf(TimeSignedObject<T> item) => Storage.IndexOf(item);
+        public bool Contains(TimeSignedObject<T> item) => Storage.Contains(item);
 
-        internal void Add(T elem)
+        public IEnumerator<TimeSignedObject<T>> GetEnumerator() => new Enumerator(Storage);
+        IEnumerator IEnumerable.GetEnumerator() => new Enumerator(Storage);
+
+        struct Enumerator : IEnumerator<TimeSignedObject<T>>
         {
-            lock (Storage) Storage.Add(elem);
+            public Enumerator(List<TimeSignedObject<T>> storage)
-            ElementAddedEvent?.Invoke(elem);
+            {
+                _storage = storage;
+                _index = storage.Count - 1;
+            }
+
+            List<TimeSignedObject<T>> _storage;
+            int _index;
+            public TimeSignedObject<T> Current => _storage[_index];
+            object IEnumerator.Current => Current;
+
+            public void Dispose() => _storage = null;
+
+            public bool MoveNext()
+            {
+                if (_index < 0)
+                    return false;
+                _index--;
+                return true;
+            }
+
+            public void Reset() => _index = _storage.Count - 1;
         }
 
-        internal void Clear() { lock (Storage) Storage.Clear(); }
+        bool ICollection<TimeSignedObject<T>>.IsReadOnly { get; } = false;
+
+        public void Insert(int index, TimeSignedObject<T> item) => throw new NotImplementedException();
+        public void RemoveAt(int index) => throw new NotImplementedException();
+        public void CopyTo(TimeSignedObject<T>[] array, int arrayIndex) => throw new NotImplementedException();
+        public bool Remove(TimeSignedObject<T> item) => throw new NotImplementedException();
     }
 }

Reactive/TimeSignedObject.cs

@@ -0,0 +1,16 @@
+using System;
+
+namespace DTLib.Reactive
+{
+    public class TimeSignedObject<T>
+    {
+        public T Value { get; init; }
+        public long Time { get; init; }
+
+        public TimeSignedObject(T value)
+        {
+            Value = value;
+            Time = DateTime.Now.Ticks;
+        }
+    }
+}