Merge pull request #118 from Xiqinger/master

add null pointer check to avoid null pointer exception.
LEMS · May 17, 2024 · acebdca · acebdca
2 parents 66acec4 + a9d3c61
commit acebdca
Showing 1 changed file with 6 additions and 0 deletions.
diff --git a/src/main/java/org/lemsml/jlems/core/run/StateInstance.java b/src/main/java/org/lemsml/jlems/core/run/StateInstance.java
@@ -300,6 +300,9 @@ public void advance(StateRunnable parent, double t, double dt) throws RuntimeErr
 
 
 	public void transitionTo(String rnm) throws RuntimeError {
+		if (regimeHM == null) {
+			throw new IllegalStateException("No Regimes.");
+		}
 		activeRegime = regimeHM.get(rnm);
 		activeRegime.enter();
 	}
@@ -314,6 +317,9 @@ public void doneInit() {
 
 	public void initRegime() throws RuntimeError {
 		if (activeRegime == null) {
+			if (regimeHM == null || regimeHM.isEmpty()) {
+				throw new IllegalStateException("No Regimes.");
+			}
 			activeRegime = regimeHM.get(regimeHM.keySet().iterator().next());
 			// TODO just picks random regime
 		}