/*
*    Copyright (c) 2013, Will Szumski
*    Copyright (c) 2013, Doug Szumski
*
*    This file is part of Cyclismo.
*
*    Cyclismo 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 3 of the License, or
*    (at your option) any later version.
*
*    Cyclismo 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 PARTICULAR PURPOSE.  See the
*    GNU General Public License for more details.
*
*    You should have received a copy of the GNU General Public License
*    along with Cyclismo.  If not, see <http://www.gnu.org/licenses/>.
*/
package org.fluxoid.utils;

import java.util.Iterator;

public class TrackedCharSequence implements Iterable<Character>, Iterator<Character> {

  private CharSequence chars;
  private int currentIndex = 0;


  public TrackedCharSequence(CharSequence sequence) {
    this.chars = sequence;
  }

  public CharSequence getInput() {
    return chars;
  }

  public CharSequence getRemainingChars() {
    return chars.subSequence(currentIndex, chars.length());
  }


  @Override
  public Iterator<Character> iterator() {
    return this;
  }

  @Override
  public boolean hasNext() {
    if (currentIndex < (chars.length())) {
      return true;
    }
    return false;
  }

  @Override
  public Character next() {
    return chars.charAt(currentIndex++);
  }

  @Override
  public void remove() {
    // not supported
  }

}