1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21 package org.apache.expreval.expr.calculation;
22
23 import org.apache.expreval.expr.DelegateStmt;
24 import org.apache.expreval.expr.ExpressionType;
25 import org.apache.expreval.expr.Operator;
26 import org.apache.expreval.expr.node.GenericValue;
27
28 public abstract class GenericCalculation extends DelegateStmt<GenericCalculation> {
29
30 private final Operator operator;
31
32 protected GenericCalculation(final ExpressionType type,
33 final GenericValue arg0,
34 final Operator operator,
35 final GenericValue arg1) {
36 super(type, arg0, arg1);
37 this.operator = operator;
38 }
39
40 protected Operator getOperator() {
41 return this.operator;
42 }
43
44 public String asString() {
45 if (this.getOperator() == Operator.NEGATIVE)
46 return "-" + this.getExprArg(0).asString();
47 else
48 return this.getExprArg(0).asString() + " " + this.getOperator() + " " + this.getExprArg(1).asString();
49 }
50 }