add all

Packages/com.tivadar.best.http/Runtime/Shared/Extensions/CircularBuffer.cs

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+using System;
+
+namespace Best.HTTP.Shared.Extensions
+{
+    public sealed class CircularBuffer<T>
+    {
+        public int Capacity { get; private set; }
+        public int Count { get; private set; }
+        public int StartIdx { get { return this.startIdx; } }
+        public int EndIdx { get { return this.endIdx; } }
+
+        public T this[int idx]
+        {
+            get
+            {
+                int realIdx = (this.startIdx + idx) % this.Capacity;
+
+                return this.buffer[realIdx];
+            }
+
+            set
+            {
+                int realIdx = (this.startIdx + idx) % this.Capacity;
+
+                this.buffer[realIdx] = value;
+            }
+        }
+
+        private T[] buffer;
+        private int startIdx;
+        private int endIdx;
+
+        public CircularBuffer(int capacity)
+        {
+            this.Capacity = capacity;
+        }
+
+        public void Add(T element)
+        {
+            if (this.buffer == null)
+                this.buffer = new T[this.Capacity];
+
+            this.buffer[this.endIdx] = element;
+
+            this.endIdx = (this.endIdx + 1) % this.Capacity;
+            if (this.endIdx == this.startIdx)
+                this.startIdx = (this.startIdx + 1) % this.Capacity;
+
+            this.Count = Math.Min(this.Count + 1, this.Capacity);
+        }
+
+        public void Clear()
+        {
+            this.Count = this.startIdx = this.endIdx = 0;
+        }
+
+        public override string ToString()
+        {
+            var sb = PlatformSupport.Text.StringBuilderPool.Get(2);
+            sb.Append("[");
+
+            int idx = this.startIdx;
+            while (idx != this.endIdx)
+            {
+                sb.Append(this.buffer[idx].ToString());
+
+                idx = (idx + 1) % this.Capacity;
+                if (idx != this.endIdx)
+                    sb.Append("; ");
+            }
+            sb.Append("]");
+
+            return sb.ToString();
+        }
+    }
+}