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1 package com.teamkonzept.lib.math;
2
3
4 public class UnaryLogicalOperator extends UnaryOperator{
5
6 final static int NOT = 0;
7
8 int type;
9
10 public UnaryLogicalOperator(int type, int parenlevel, int position)
11 throws UnsupportedOperatorException{
12 super(parenlevel, getPriority(type, position), position);
13 this.type = type;
14 }
15
16 public Object  evaluate(Object target)throws BadOperandTypeException{
17 if ( !(target instanceof Boolean ) )
18 throw new BadOperandTypeException(target, "Boolean");
19 return new Boolean (!((Boolean )target).booleanValue());
20 }
21
22 static int getPriority(int op, int position)
23 throws UnsupportedOperatorException{
24 switch ( op ){
25 case NOT:
26 return LOGICAL_NOT_PRIORITY;
27 default:
28 throw new UnsupportedOperatorException(UnaryLogicalOperator.class,
29 op, position);
30 }
31 }
32
33
34 }
35 |
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