Check that the annotation used for key/value is actually a Map

Author: AngledLuffa

src/edu/stanford/nlp/semgraph/semgrex/NodePattern.java

@@ -8,6 +8,7 @@
 import java.util.regex.Matcher;
 import java.util.regex.Pattern;
 
+import edu.stanford.nlp.ling.AnnotationLookup;
 import edu.stanford.nlp.ling.IndexedWord;
 import edu.stanford.nlp.semgraph.SemanticGraph;
 import edu.stanford.nlp.semgraph.SemanticGraphEdge;
@@ -95,6 +96,12 @@ public NodePattern(GraphRelation r, boolean negDesc,
       String key = entry.second();
       String value = entry.third();
 
+      Class<?> clazz = AnnotationLookup.getValueType(AnnotationLookup.toCoreKey(annotation));
+      boolean isMap = clazz != null && Map.class.isAssignableFrom(clazz);
+      if (!isMap) {
+        throw new SemgrexParseException("Cannot process a single key/value from annotation " + annotation + " as it is not a Map"); 
+      }
+
       final Attribute attr;
       // Add the attributes for this key
       if (value.equals("__")) {
@@ -229,6 +236,7 @@ public boolean nodeAttrMatch(IndexedWord node, final SemanticGraph sg, boolean i
     for (Pair<String, Attribute> partialAttribute : partialAttributes) {
       String annotation = partialAttribute.first();
       Attribute attr = partialAttribute.second();
+      Class clazz = Env.lookupAnnotationKey(env, annotation);
       // TODO
     }