IVC and MCS bugs (#17)

* Added missing Kind 2 Object value

* Changed error handling to ignore some empty cases of analyses

Author: Jabe03

src/main/java/edu/uiowa/cs/clc/kind2/results/Object.java

@@ -23,7 +23,8 @@ public enum Object
   postAnalysisEnd("postAnalysisEnd"),
   modelElementSet("modelElementSet"),
   progress("progress"),
-  lsp("lsp");
+  lsp("lsp"),
+  modelSetEnumeration("modelSetEnumeration");
 
   private final String value;
 
@@ -60,6 +61,8 @@ public static Object getKind2Object(String kind2Object)
         return progress;
       case "lsp":
         return lsp;
+      case "modelSetEnumeration":
+        return modelSetEnumeration;
       default:
         throw new UnsupportedOperationException("Value " + kind2Object + " is not defined");
     }

src/main/java/edu/uiowa/cs/clc/kind2/results/Result.java

@@ -161,7 +161,7 @@ public void initialize(String json) {
     Analysis kind2Analysis = null;
     // for post analysis
     Analysis previousAnalysis = null;
-
+    boolean emptyAnalysis = false;
     for (JsonElement jsonElement : jsonArray) {
       String objectType = jsonElement.getAsJsonObject().get(Labels.objectType).getAsString();
       Object kind2Object = Object.getKind2Object(objectType);
@@ -250,14 +250,17 @@ public void initialize(String json) {
           PostAnalysis postAnalysis = new PostAnalysis(previousAnalysis, jsonElement);
           previousAnalysis.setPostAnalysis(postAnalysis);
         } else {
-          throw new RuntimeException("Can not parse kind2 json output");
+          // This can occur sometimes with no previous analysis when the node had no properties to check.
+          emptyAnalysis = true;
         }
       }
 
       if (kind2Object == Object.postAnalysisEnd) {
         if (previousAnalysis != null && previousAnalysis.getPostAnalysis() != null) {
           // finish the post analysis
           previousAnalysis = null;
+        } else if (emptyAnalysis){
+          //Do nothing, had a no-analysis postAnalysisStart beforehand.
         } else {
           throw new RuntimeException("Failed to analyze kind2 json output");
         }
@@ -269,7 +272,8 @@ public void initialize(String json) {
           ModelElementSet elementSet = new ModelElementSet(postAnalysis, jsonElement);
           postAnalysis.addModelElementSet(elementSet);
         } else {
-          throw new RuntimeException("Can not parse kind2 json output");
+          // This branch gets hit sometimes when we have empty (nonexistent) analyses of nodes with 
+          // no properties to check, causing missing analyses before postAnalyses, as well as this object.
         }
       }
     }