10: Create ParentNodeFilter

src/main/java/com/bartek/esa/core/di/CoreModule.java

@@ -2,6 +2,7 @@ package com.bartek.esa.core.di;
 
 import com.bartek.esa.core.desc.provider.DescriptionProvider;
 import com.bartek.esa.core.executor.PluginExecutor;
+import com.bartek.esa.core.helper.ParentNodeFinder;
 import com.bartek.esa.core.helper.StaticScopeHelper;
 import com.bartek.esa.core.java.JavaSyntaxRegexProvider;
 import com.bartek.esa.core.xml.XmlHelper;
@@ -35,4 +36,9 @@ public class CoreModule {
     public StaticScopeHelper staticScopeHelper() {
         return new StaticScopeHelper();
     }
+
+    @Provides
+    public ParentNodeFinder parentNodeFinder() {
+        return new ParentNodeFinder();
+    }
 }

src/main/java/com/bartek/esa/core/helper/ParentNodeFinder.java

@@ -0,0 +1,25 @@
+package com.bartek.esa.core.helper;
+
+
+import com.github.javaparser.ast.Node;
+
+import javax.inject.Inject;
+import java.util.Optional;
+
+public class ParentNodeFinder {
+
+    @Inject
+    public ParentNodeFinder() {
+
+    }
+
+    public <T extends Node> Optional<T> findParentNode(Node child, Class<T> nodeType) {
+        Node parent = child.getParentNode().orElse(null);
+
+        while(parent != null && !parent.getClass().equals(nodeType)) {
+            parent = parent.getParentNode().orElse(null);
+        }
+
+        return Optional.ofNullable(parent).map(nodeType::cast);
+    }
+}