class EacRubyUtils::ArgumentsConsumer::Parser

def add_arg(value, index)
  arg = ::Struct.new(:value, :index).new(value, index)
  if arg.value.is_a?(::Hash)
    add_hash_arg(arg)
  else
    add_positional_arg(arg)
  end
end

def add_hash_arg(arg)
  check_no_more_arguments(arg)
  data.merge!(arg.value)
  @options_found = true
end

def add_positional_arg(arg)
  check_no_more_arguments(arg)
  invalid_argument arg, 'No more valid positional' if
    arg.index >= arguments_consumer.positional.count
  data[arguments_consumer.positional[arg.index]] = arg.value
end

def check_no_more_arguments(arg)
  return unless @options_found
  invalid_argument arg, 'Hash already found - no more positional allowed'
end

def initialize(arguments_consumer, args)
  @arguments_consumer = arguments_consumer
  @data = ::ActiveSupport::HashWithIndifferentAccess.new
  @options_found = false
  arguments_consumer.positional.each { |key| data[key] = nil }
  data.merge!(arguments_consumer.default_options)
  args.each_with_index { |value, index| add_arg(value, index) }
  data.freeze
end

def invalid_argument(arg, message)
  raise InvalidArgumentError.new(self, arg, message)
end