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8
9public
10class IntToDouble extends UnaryExpr {
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12
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14 public
15 IntToDouble(Expr operand) {
16 super(operand);
17 }
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24 public
25 Object eval() {
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29 Object value
30 = operand.eval();
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34 if ( value instanceof Integer ) {
35 return
36 new Double( ((Integer)value).doubleValue() );
37 }
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40
41 throw
42 new IllegalArgumentException("int to double: illegal operand type");
43 }
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47 public
48 String toString() {
49 return
50 "((double)" + operand.toString() + ")";
51 }
52}
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55
