feat(base.cache): PlainCache

[skip ci]

src/main/java/org/auioc/mcmod/arnicalib/base/cache/PlainCache.java

@@ -0,0 +1,33 @@
+package org.auioc.mcmod.arnicalib.base.cache;
+
+import java.util.HashMap;
+import java.util.Optional;
+import javax.annotation.Nullable;
+import org.checkerframework.checker.units.qual.K;
+import org.lwjgl.system.CallbackI.V;
+
+public class PlainCache implements Cache<K, V> {
+
+    private final HashMap<K, V> map = new HashMap<K, V>();
+
+    @Nullable
+    @Override
+    public V get(K key) {
+        return map.get(key);
+    }
+
+    public Optional<V> getOptional(K key) {
+        return Optional.ofNullable(get(key));
+    }
+
+    @Override
+    public void put(K key, V value) {
+        map.put(key, value);
+    }
+
+    @Override
+    public void clear() {
+        map.clear();
+    }
+
+}