UnaryExpr Analyze fixed

src/main/java/chocopy/pa3/CodeGenImpl.java

@@ -358,12 +358,19 @@ public class CodeGenImpl extends CodeGenBase
         @Override
         public Register analyze(UnaryExpr node) 
         {
-            node.operand.dispatch(this);
+            if(node.operator.equals("-") && node.getInferredType().equals(Type.INT_TYPE))
-            if(node.operator.equals("-"))
             {
+                node.operand.dispatch(this);    
                 backend.emitLI(Register.T0, -1, "Set value of Register T0 to -1");
                 backend.emitMUL(Register.A0, Register.A0, Register.T0, "Multiply by -1");
             }
+            else if(node.operator.equals("not") && node.getInferredType().equals(Type.BOOL_TYPE))
+            {    
+                node.operand.dispatch(this);
+                backend.emitSEQZ(Register.T0, Register.A0, "Not operation on Register A0");
+            }
+            else
+                return null;
             return Register.A0;
         }