Function Elem

dsl/user_type.go:290–304

Elem makes it possible to specify validations for array and map values. Example: Attribute("array", ArrayOf(Int), func() { Elem(func() { Enum(1, 2, 3, 4, 5) // list possible values for array elements }) }) Attribute("map", MapOf(String, Int), func() { Elem(func() {

(fn func())

//	    })
//	})
func Elem(fn func()) {
	at, ok := eval.Current().(*expr.AttributeExpr)
	if !ok {
		eval.IncompatibleDSL()
		return
	}
	switch e := at.Type.(type) {
	case *expr.Array:
		eval.Execute(fn, e.ElemType)
	case *expr.Map:
		eval.Execute(fn, e.ElemType)
	default:
		eval.IncompatibleDSL()
	}
}