orelang.operator.WhenOperator source code

1 module orelang.operator.WhenOperator;
2 import orelang.operator.IOperator,
3        orelang.Engine,
4        orelang.Value;
5 
6 class WhenOperator : IOperator {
7   /**
8    * Loop while the condition is true.
9    */
10   public Value call(Engine engine, Value[] args) {
11     if (engine.eval(args[0]).getBool) {
12       Value ret = null;
13 
14       foreach (arg; args[1..$]) {
15         ret = engine.eval(arg);
16       }
17 
18       return ret;
19     } else {
20       return new Value;
21     }
22   }
23 }