# frozen_string_literal: true # Used internally by the KeyMapable concern. class KeyMapable::Mapper attr_reader :subject, :structure def initialize(subject) @subject = subject @structure = {} end def key_value(key) @structure[key] = yield() end def key(name, &block) child_mapper = self.class.new(subject) child_mapper.instance_eval(&block) @structure[name] = child_mapper.resolve end def key_map(original_key, new_key, transform: ->(val) { val }, &block) original_subject = subject.public_send(original_key) transformed_subject = transform.call(original_subject) if block_given? child_mapper = self.class.new(transformed_subject) child_mapper.instance_eval &block @structure[new_key] = child_mapper.resolve else @structure[new_key] = transformed_subject end end def array_key_map(original_key, new_key, &block) original_subject = subject.public_send(original_key) @structure[new_key] = original_subject.map do |item| child_mapper = self.class.new(item) child_mapper.instance_eval(&block) child_mapper.resolve end end def resolve @structure end end