text: // jhcNodeList.h : sequential list of semantic network nodes
  //
  // Written by Jonathan H. Connell, jconnell@alum.mit.edu
  //
  ///////////////////////////////////////////////////////////////////////////
  //
  // Copyright 2018-2020 IBM Corporation
  //
  // 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.
  // 
  ///////////////////////////////////////////////////////////////////////////
  
  #ifndef _JHCNODELIST_
  /* CPPDOC_BEGIN_EXCLUDE */
  #define _JHCNODELIST_
  /* CPPDOC_END_EXCLUDE */
  
  #include "jhcGlobal.h"
  
  #include "Semantic/jhcNetNode.h"       // common audio
  
  
  //= Sequential list of semantic network nodes.
  // abstract class that others are derived from
  // anything that can be cast to this class is enumerable
  
  class jhcNodeList
  {
  // PUBLIC MEMBER FUNCTIONS
  public:
    // main functions (override in derived classes)
    virtual jhcNetNode *NextNode (const jhcNetNode *prev =NULL) const =0;
    virtual int Length () const =0;
    virtual bool InList (const jhcNetNode *n) const =0;
  
  
  };
  
  
  #endif  // once
  
  
  
  
  