orelang.operator.AliasOperator source code

1 module orelang.operator.AliasOperator;
2 import orelang.operator.IOperator,
3        orelang.Engine,
4        orelang.Value;
5 
6 class AliasOperator : IOperator {
7   /**
8    * call
9    */
10   public Value call(Engine engine, Value[] args) {
11     string _new = args[0].getString;
12     string base = args[1].getString;
13 
14     if (base in engine.variables) {
15       Value v = engine.variables[base];
16 
17       engine.variables.set(_new, v);
18 
19       return v;
20     } else {
21       throw new Exception("No such variable or operator - " ~ base);
22     }
23   }
24 }