ama-team / ruby-entity-mapper

          class EntityValidator < API::EntityValidator

            INSTANCE = new

            # @param [Object] entity

            # @param [Mapper::Type::Concrete] type

            # @param [Mapper::Context] context

            # @return [Array<Array<Attribute, String, Segment>] List of

            #   violations, combined with attribute and segment

            def validate(entity, type, context)

              enumerator = type.enumerator.enumerate(entity, type, context)

              enumerator.flat_map do |attribute, value, segment = nil|

                next_context = segment.nil? ? context : context.advance(segment)

                validator = attribute.validator

                violations = validator.validate(value, attribute, next_context)

                violations.map do |violation|

                  [attribute, violation, segment]

                end

              end

            end

          end