text: # -*- coding: utf-8 -*-
  
  # Copyright 2017 IBM RESEARCH. All Rights Reserved.
  #
  # 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.
  # =============================================================================
  
  """
  Node for an OPENQASM idlist.
  """
  from ._node import Node
  
  
  class IdList(Node):
      """Node for an OPENQASM idlist.
  
      children is a list of id nodes.
      """
  
      def __init__(self, children):
          """Create the idlist node."""
          Node.__init__(self, 'id_list', children, None)
  
      def size(self):
          """Return the length of the list."""
          return len(self.children)
  
      def qasm(self, prec=15):
          """Return the corresponding OPENQASM string."""
          return ",".join([self.children[j].qasm(prec)
                           for j in range(self.size())])
  