rpn
| package metaobjectTest | |
| @doc{* | |
| Annotation 'rpn' takes an expression in Reverse Polish Notation (RPN) | |
| in the attached DSL and evaluates it at compile-time. The annotation | |
| is an expression of type Int. Only positive integer numbers are allowed | |
| in the RPN expression. | |
| This is a demonstration metaobject. | |
| *} | |
| object Rpn | |
| func run { | |
| let value = @rpn{* 1 2 3 * + *}; | |
| assert value = 7; | |
| } | |
| end | |
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