1 files changed, 14 insertions, 3 deletions
diff --git a/src/main/java/bjc/rgens/parser/RGrammar.java b/src/main/java/bjc/rgens/parser/RGrammar.java
index 20ce320..018f2f0 100755
--- a/src/main/java/bjc/rgens/parser/RGrammar.java
+++ b/src/main/java/bjc/rgens/parser/RGrammar.java
@@ -1,7 +1,9 @@
 package bjc.rgens.parser;
 
 import bjc.utils.data.IPair;
+import bjc.utils.data.ITree;
 import bjc.utils.data.Pair;
+import bjc.utils.data.Tree;
 import bjc.utils.funcutils.StringUtils;
 import bjc.utils.ioutils.ReportWriter;
 
@@ -291,18 +293,27 @@ public class RGrammar {
 	 *            initial rule.
 	 */
 	public void setInitialRule(String initRule) {
+		setInitialRule(initRule, new Tree<>());
+	}
+
+	public void setInitialRule(String initRule, ITree<String> errs) {
 		/* Passing null, nulls our initial rule. */
 		if (initRule == null) {
 			this.initialRule = null;
+
 			return;
 		}
 
 		if (initRule.equals("")) {
-			throw new GrammarException("The empty string is not a valid rule name");
+			errs.addChild("ERROR: The empty string is not a valid rule name");
+
+			return;
 		} else if (!rules.containsKey(initRule)) {
-			String msg = String.format("No rule '%s' local to this grammar (%s) defined.", initRule, name);
+			String msg = String.format("ERROR: No rule '%s' local to this grammar (%s) defined.", initRule, name);
+
+			errs.addChild(msg);
 
-			throw new GrammarException(msg);
+			return;
 		}
 
 		initialRule = initRule;