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Contents
module BloodContracts::Core
# Mapper in form of refinement type, transforms the value using mapper_klass
class MapValue < Refined
class << self
# Any callable object which you prefer to turn value into other form
#
# @param [Class, #call]
# @return [Class]
#
attr_accessor :mapper_klass
# Generates meta-class with predefined mapper_klass
#
# @param mapper_klass [Class, callable] callable object that will
# transform the value
# @return [MapValue]
#
def with(mapper_klass)
type = Class.new(self)
type.mapper_klass = mapper_klass
type
end
end
# Always successful matching process which transforms the value and
# store it in the context
#
# @return [Refined]
#
def match
context[:mapper_input] = value
context[:mapped_value] =
self.class.mapper_klass.call(**context[:mapper_input])
self
end
# Mapped representation of the value
#
# @return [Object]
#
def mapped
match.context[:mapped_value]
end
end
end
Version data entries
5 entries across 5 versions & 1 rubygems