Contents

module Dry::Initializer::Plugins
  # Plugin builds either chunk of code for the #initializer,
  # or a proc for the ##__after_initialize__ callback.
  class TypeConstraint < Base
    def call
      return unless settings.key? :type

      type = settings[:type]
      fail TypeConstraintError.new(rename, type) unless type.respond_to? :call

      ivar = :"@#{rename}"
      lambda do |*|
        value = instance_variable_get(ivar)

        if value != Dry::Initializer::UNDEFINED
          instance_variable_set ivar, type.call(value)
        end
      end
    end
  end
end

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
dry-initializer-0.11.0	lib/dry/initializer/plugins/type_constraint.rb
dry-initializer-0.10.2	lib/dry/initializer/plugins/type_constraint.rb