The urge to build DSLs... On a little project, bu...

# codereview

[groostav]

The urge to build DSLs...

On a little project, building some validation for GRPC messages.

currently

private val staticValidations = ContextFreeMessageValidator().apply {
        addValidation<AnchorLocationDTO> {
            require(it.occurance >= 1) { "Must have positive occurrence" }
        }

and maybe a few dozen more such validations.

but what if I wrote a slick DSL:

private val dslTest = contextFreeMessageValidator {
    + { message: AnchorLocationDTO ->
        require(message.occurance >= 1) { "Must have positive occurrence" }
    }
}

its so pretty... but no... I must resist, nobody else on my project will have any idea wtf thats doing...

[Fergus Hewson]

Do it, I'm looking for my first opportunity to write one

[Javier]

Akkurare is a cool library for validation, maybe it can help you

https://github.com/nesk/akkurate

[christophsturm]

that looks nice!