move nodemap to utilities

Author: wcygan

src/main/java/gr/gousiosg/javacg/stat/coverage/JacocoCoverage.java

@@ -15,6 +15,8 @@
 import java.util.*;
 import java.util.stream.Collectors;
 
+import static gr.gousiosg.javacg.stat.graph.Utilities.nodeMap;
+
 public class JacocoCoverage {
 
     public static final String METHOD_TYPE = "METHOD";
@@ -89,10 +91,6 @@ public JacocoCoverage(Optional<String> maybeFilepath)
         }
     }
 
-    private static Map<String, ColoredNode> nodeMap(Set<ColoredNode> nodes) {
-        return nodes.stream().collect(Collectors.toMap(ColoredNode::getLabel, node -> node));
-    }
-
     public void applyCoverage(Graph<ColoredNode, DefaultEdge> graph, JarMetadata metadata) {
         LOGGER.info("Applying coverage!");
         Map<String, ColoredNode> nodeMap = nodeMap(graph.vertexSet());

src/main/java/gr/gousiosg/javacg/stat/graph/Utilities.java

@@ -16,6 +16,7 @@
 import java.io.Writer;
 import java.util.*;
 import java.util.function.Supplier;
+import java.util.stream.Collectors;
 import java.util.stream.Stream;
 import java.util.stream.StreamSupport;
 
@@ -25,6 +26,10 @@ public class Utilities {
 
     private static final Logger LOGGER = LoggerFactory.getLogger(Utilities.class);
 
+    public static Map<String, ColoredNode> nodeMap(Set<ColoredNode> nodes) {
+        return nodes.stream().collect(Collectors.toMap(ColoredNode::getLabel, node -> node));
+    }
+
     /**
      * Writes a graph to a file `name.dot`
      *