-- This file is part of a Liberty Eiffel library.
-- See the full copyright at the end.
--
class AUTOMATON_CONTEXT[E_]

create {AUTOMATON}
   make

feature {ANY} -- user data
   data: E_

   is_valid: BOOLEAN

   current_state: STATE[E_]

feature {AUTOMATON} -- state memo
   set_current_state (s: like current_state)
      require
         s /= Void
      do
         current_state := s
      ensure
         current_state = s
      end

   invalidate
      do
         is_valid := False
      ensure
         not is_valid
      end

feature {}
   make (e: E_)
      do
         data := e
         is_valid := True
      ensure
         data = e
      end

end -- class AUTOMATON_CONTEXT
--
-- Copyright (C) 2009-2017: by all the people cited in the AUTHORS file.
--
-- Permission is hereby granted, free of charge, to any person obtaining a copy
-- of this software and associated documentation files (the "Software"), to deal
-- in the Software without restriction, including without limitation the rights
-- to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
-- copies of the Software, and to permit persons to whom the Software is
-- furnished to do so, subject to the following conditions:
--
-- The above copyright notice and this permission notice shall be included in
-- all copies or substantial portions of the Software.
--
-- THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-- IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-- FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-- AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
-- LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
-- OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
-- THE SOFTWARE.