Updated logical values in Ruby & R heap viewers

Author: jisedlac

visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/lang/r/RDetailsProvider.java

@@ -125,6 +125,9 @@ public String getDetailsString(String className, Instance instance, Heap heap) {
             Instance name = (Instance) instance.getValueOfField("name");   // NOI18N
             if (name != null) {
                 return DetailsSupport.getDetailsString(name, heap);
+            } else {
+                name = (Instance) instance.getValueOfField("nameWrapper");   // NOI18N
+                return name == null ? null : DetailsUtils.getInstanceFieldString(name, "contents", heap); // NOI18N
             }
         }
         if (RFUNCTION_MASK.equals(className)) {

visualvm/heapviewer.truffle/src/org/graalvm/visualvm/heapviewer/truffle/lang/ruby/RubyNodes.java

@@ -184,6 +184,12 @@ static String getLogicalValue(RubyObject object, String type, Heap heap) {
                     logicalValue = "("+numeratorValue+"/"+denominatorValue+")";
                 }
             }
+        } else if ("Complex".equals(type)) { // NOI18N
+            FieldValue realField = object.getFieldValue("@real"); // NOI18N
+            String real = realField != null ? realField.getValue() : null;
+            FieldValue imagField = object.getFieldValue("@imag"); // NOI18N
+            String imag = imagField != null ? imagField.getValue() : null;
+            if (real != null && imag != null) logicalValue = "(" + real + (imag.startsWith("-") ? imag : "+" + imag) + "i)"; // NOI18N
         }
 
         if (logicalValue != null && logicalValue.length() > MAX_LOGVALUE_LENGTH)