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/*
 Copyright (c) 2011, The Staccato-Commons Team

 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU Lesser General Public License as published by
 the Free Software Foundation; version 3 of the License.

 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 PARTICULAR PURPOSE.  See the
 GNU Lesser General Public License for more details.
 */
package net.sf.staccatocommons.collections.stream.impl;

import java.util.NoSuchElementException;

import net.sf.staccatocommons.collections.stream.Stream;
import net.sf.staccatocommons.collections.stream.Streams;
import net.sf.staccatocommons.iterators.thriter.Thriterator;
import net.sf.staccatocommons.iterators.thriter.Thriterators;

/**
 * @author flbulgarelli
 * 
 */
public final class SingleStream extends StrictStream {

  private A element;

  /**
   * Creates a new {@link SingleStream}
   */
  public SingleStream(A element) {
    this.element = element;
  }

  @Override
  public Thriterator iterator() {
    return Thriterators.from(element);
  }

  @Override
  public int size() {
    return 1;
  }

  @Override
  public Stream tail() {
    return Streams.empty();
  }

  @Override
  public A get(int n) {
    if (n == 0)
      return element;
    throw new NoSuchElementException("At " + n);
  }

  @Override
  public boolean isBefore(A previous, A next) {
    return false;
  }

  @Override
  public boolean isEmpty() {
    return false;
  }

}