orelang.operator.WhileOperator source code

1 module orelang.operator.WhileOperator;
2 import orelang.operator.IOperator,
3        orelang.Engine,
4        orelang.Value;
5 
6 class WhileOperator : IOperator {
7   /**
8    * Loop while the condition is true.
9    */
10   public Value call(Engine engine, Value[] args) {
11     Value ret = null;
12 
13     while (engine.eval(args[0]).getBool) {
14       ret = engine.eval(args[1]);
15     }
16 
17     return ret;
18   }
19 }