# encoding: utf-8

#--
# Copyright DataStax, Inc.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#++

module Cassandra
  # Represents a function argument
  class Argument
    # @return [String] column name
    attr_reader :name
    # @return [Cassandra::Type] column type
    attr_reader :type

    # @private
    def initialize(name, type)
      @name = name
      @type = type
    end

    # @private
    def eql?(other)
      other.is_a?(Argument) && \
        @name == other.name && \
        @type == other.type
    end
    alias == eql?

    # @private
    def hash
      @hash ||= begin
        h = 17
        h = 31 * h + @name.hash
        h = 31 * h + @type.hash
        h
      end
    end
  end
end
