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# frozen_string_literal: true
require 'stringio'
module Aws
module Query
class ParamList
include Enumerable
# @api private
def initialize
@params = {}
end
# @param [String] param_name
# @param [String, nil] param_value
# @return [Param]
def set(param_name, param_value = nil)
param = Param.new(param_name, param_value)
@params[param.name] = param
param
end
alias []= set
# @return [Param, nil]
def [](param_name)
@params[param_name.to_s]
end
# @param [String] param_name
# @return [Param, nil]
def delete(param_name)
@params.delete(param_name)
end
# @return [Enumerable]
def each(&block)
to_a.each(&block)
end
# @return [Boolean]
def empty?
@params.empty?
end
# @return [Array<Param>] Returns an array of sorted {Param} objects.
def to_a
@params.values.sort
end
# @return [String]
def to_s
to_a.map(&:to_s).join('&')
end
# @return [#read, #rewind, #size]
def to_io
IoWrapper.new(self)
end
# @api private
class IoWrapper
# @param [ParamList] param_list
def initialize(param_list)
@param_list = param_list
@io = StringIO.new(param_list.to_s)
end
# @return [ParamList]
attr_reader :param_list
# @return [Integer]
def size
@io.size
end
# @return [void]
def rewind
@io.rewind
end
# @return [String, nil]
def read(bytes = nil, output_buffer = nil)
@io.read(bytes, output_buffer)
end
end
end
end
end
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