slight restructure

src/main/java/parser/ast/AST.java

@@ -1,4 +1,4 @@
-package util.ast;
+package parser.ast;
 
 import java.util.Objects;
 

src/main/java/parser/ast/ASTCompacter.java

@@ -1,13 +1,11 @@
-package parser;
+package parser.ast;
 
 import parser.grammar.Grammar;
-import util.ast.AST;
-import util.ast.Node;
 
 import java.util.Collection;
 import java.util.HashSet;
 
-import static util.tools.Logger.log;
+import static util.Logger.log;
 
 public final class ASTCompacter {
 

src/main/java/parser/ast/Node.java

@@ -1,6 +1,7 @@
-package util.ast;
+package parser.ast;
 
 import java.util.ArrayList;
+import java.util.Arrays;
 import java.util.Iterator;
 import java.util.List;
 import java.util.Objects;
@@ -91,6 +92,11 @@ public class Node {
         this.children = children;
     }
 
+    public void setChildren(Node... children) {
+        this.children = new ArrayList<>();
+        this.children.addAll(Arrays.asList(children));
+    }
+
     public long size() {
         int s = 0;
 

src/main/java/parser/grammar/Actions.java

@@ -1,4 +1,4 @@
-package parser;
+package parser.grammar;
 
 public enum Actions {
     COMPACT,

src/main/java/util/Logger.java

@@ -1,4 +1,4 @@
-package util.tools;
+package util;
 
 // Maximal professioneller Logger
 public final class Logger {