Test code for cache-like event loop

event-loop/src/main/java/mc/core/events/cachelike/Handler.java

@@ -0,0 +1,16 @@
+package mc.core.events.cachelike;
+
+import mc.core.events.LoginEvent;
+
+public class SampleHandler {
+
+    @Preprocessor(preprocessor = (new PreprocessorContext<LoginEvent>() {
+        @Override
+        protected void init() {
+
+        }
+    }).class)
+    public void onLogin(LoginEvent event){
+
+    }
+}

event-loop/src/main/java/mc/core/events/cachelike/Preprocessor.java

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+package mc.core.events.cachelike;
+
+public @interface Preprocessor {
+    Class<PreprocessorContext> preprocessor();
+}

event-loop/src/main/java/mc/core/events/cachelike/PreprocessorContext.java

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+package mc.core.events.cachelike;
+
+import com.google.common.base.Function;
+
+import java.util.ArrayList;
+import java.util.List;
+
+public abstract class PreprocessorContext<E> {
+    private List<Function<E, Number>> fetchers = new ArrayList<>();
+
+    protected void push(Function<E, Number> fetcher) {
+        fetchers.add(fetcher);
+    }
+
+    protected abstract void init() ;
+
+}