Code tidy

git-svn-id: https://www.prismmodelchecker.org/svn/prism/prism/trunk@4630 bbc10eb1-c90d-0410-af57-cb519fbb1720

prism/src/prism/StateModelChecker.java

@@ -340,8 +340,6 @@ public class StateModelChecker implements ModelChecker
 				res1.clear();
 			if (res2 != null)
 				res2.clear();
-			if (res3 != null)
-				res3.clear();
 			throw e;
 		}
 
@@ -391,8 +389,6 @@ public class StateModelChecker implements ModelChecker
 		} catch (PrismException e) {
 			if (res1 != null)
 				res1.clear();
-			if (res2 != null)
-				res2.clear();
 			throw e;
 		}
 
@@ -591,8 +587,6 @@ public class StateModelChecker implements ModelChecker
 		} catch (PrismException e) {
 			if (res1 != null)
 				res1.clear();
-			if (res2 != null)
-				res2.clear();
 			throw e;
 		}
 		dd1 = res1.convertToStateValuesMTBDD().getJDDNode();
@@ -632,13 +626,7 @@ public class StateModelChecker implements ModelChecker
 		int i, n, op = expr.getOperator();
 
 		// Check operand recursively
-		try {
-			res1 = checkExpression(expr.getOperand());
-		} catch (PrismException e) {
-			if (res1 != null)
-				res1.clear();
-			throw e;
-		}
+		res1 = checkExpression(expr.getOperand());
 
 		// Parentheses are easy - nothing to do:
 		if (op == ExpressionUnaryOp.PARENTH)
@@ -708,13 +696,7 @@ public class StateModelChecker implements ModelChecker
 		int i, n, op = expr.getNameCode();
 
 		// Check operand recursively
-		try {
-			res1 = checkExpression(expr.getOperand(0));
-		} catch (PrismException e) {
-			if (res1 != null)
-				res1.clear();
-			throw e;
-		}
+		res1 = checkExpression(expr.getOperand(0));
 		// Symbolic
 		if (res1 instanceof StateValuesMTBDD) {
 			dd1 = ((StateValuesMTBDD) res1).getJDDNode();
@@ -765,8 +747,6 @@ public class StateModelChecker implements ModelChecker
 		} catch (PrismException e) {
 			if (res1 != null)
 				res1.clear();
-			if (res2 != null)
-				res2.clear();
 			throw e;
 		}
 		// If both operands are symbolic, result will be symbolic
@@ -851,13 +831,7 @@ public class StateModelChecker implements ModelChecker
 		boolean symbolic;
 
 		// Check first operand recursively
-		try {
-			res1 = checkExpression(expr.getOperand(0));
-		} catch (PrismException e) {
-			if (res1 != null)
-				res1.clear();
-			throw e;
-		}
+		res1 = checkExpression(expr.getOperand(0));
 		// Go through remaining operands
 		// Switch to explicit as soon as an operand is explicit
 		n = expr.getNumOperands();