仿真平台内核初版 -tlib库 包含<sparc arm riscv powerPC>

lib/termsharp/Misc/SimpleCache.cs

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+//
+// Copyright (c) Antmicro
+//
+// Full license details are defined in the 'LICENSE' file.
+//
+using System;
+
+namespace TermSharp.Misc
+{
+    internal sealed class SimpleCache<TFrom, TTo> where TFrom : IGenerationAware
+    {
+        public SimpleCache(Func<TFrom, TTo> factory)
+        {
+            generation = -1;
+            this.factory = factory;
+        }
+
+        public TTo GetValue(TFrom from)
+        {
+            if(generation != from.Generation)
+            {
+                var resultAsDisposable = lastResult as IDisposable;
+                if(resultAsDisposable != null)
+                {
+                    resultAsDisposable.Dispose();
+                }
+                lastResult = factory(from);
+                generation = from.Generation;
+            }
+            return lastResult;
+        }
+
+        private TTo lastResult;
+        private Func<TFrom, TTo> factory;
+        private int generation;
+    }
+}