code: /*
  * Copyright 2014 Basis Technology Corp.
  *
  * 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.
  */
  package com.basistech.tclre;
  
  import com.google.common.base.MoreObjects;
  
  /**
   * State object in runtime.
   */
  class State {
      static final int FREESTATE = -1;
      int no;
      int flag;       /* marks special states */
      int nins;       /* number of inarcs */
      Arc ins;    /* chain of inarcs */
      int nouts;      /* number of outarcs */
      Arc outs;   /* chain of outarcs */
      State tmp;  /* temporary for traversal algorithms */
      State next; /* chain for traversing all */
      State prev; /* back chain */
  
      Arc findarc(int type, short co) {
          for (Arc a = outs; a != null; a = a.outchain) {
              if (a.type == type && a.co == co) {
                  return a;
              }
          }
          return null;
      }
  
      @Override
      public String toString() {
          return MoreObjects.toStringHelper(this)
                  .add("no", no)
                  .add("flag", flag)
                  .toString();
      }
  }
  