ama-team / ruby-entity-mapper

module AMA

  module Entity

    class Mapper

      class Path

        # Well, that's quite self-explanatory. Path consists of segments, and

        # here's one.

        class Segment

          attr_reader :name

          attr_reader :prefix

          attr_reader :suffix

          def initialize(name, prefix = nil, suffix = nil)

            @name = name

            @prefix = prefix

            @suffix = suffix

          end

          def to_s

            "#{@prefix}#{@name}#{@suffix}"

          end

          def hash

            @name.hash ^ @prefix.hash ^ @suffix.hash

          end

          def eql?(other)

            return false unless other.is_a?(self.class)

            @name == other.name && @prefix == other.prefix &&

              @suffix == other.suffix

          end

          class << self

            def attribute(name)

              new(name, '.')

            end

            def index(name)

              new(name, '[', ']')

            end

          end

        end

      end

    end

  end

end