=begin
XSD4R - WSDL named element collection.
Copyright (C) 2002, 2003  NAKAMURA, Hiroshi.

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 2 of the License, or (at your option) any later
version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY
WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A
PRATICULAR PURPOSE. See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with
this program; if not, write to the Free Software Foundation, Inc., 675 Mass
Ave, Cambridge, MA 02139, USA.
=end


module XSD


class NamedElements
  include Enumerable

  def initialize
    @elements = []
    @cache = {}
  end

  def dup
    o = NamedElements.new
    o.elements = @elements.dup
    o
  end

  def size
    @elements.size
  end

  def [](idx)
    if idx.is_a?(Numeric)
      @elements[idx]
    else
      @cache[idx] ||= @elements.find { |item| item.name == idx }
    end
  end

  def find_name(name)
    @elements.find { |item| item.name.name == name }
  end

  def each
    @elements.each do |element|
      yield(element)
    end
  end

  def <<(rhs)
    @elements << rhs
    self
  end

  def +(rhs)
    o = NamedElements.new
    o.elements = @elements + rhs.elements
    o
  end

  def concat(rhs)
    @elements.concat(rhs.elements)
    self
  end

protected

  def elements=(rhs)
    @elements = rhs
  end

  def elements
    @elements
  end
end

end