package edu.neu.ccs.demeter;

/** A terminal class for parsing a word.  Put Word in a class
    dictionary to represent a word (any sequence of non-whitespace
    characters) in an input sentence. */
final public class Word implements java.io.Serializable {
  private String str;
  /** Construct an empty word. */
  public Word() { str = ""; }
  /** Construct a Word from a String.  Note that a Word created
      outside of the parser is not constrained to be a single word. */
  public Word(String s) { str = s; }
  /** Construct a Word from an Object by converting it to a String
      with {@link Object#toString()}.  Note that a Word created outside of
      the parser is not constrained to be a single word. */
  public Word(Object obj) { str = obj.toString(); }
  public String toString() { return str; }
  public int hashCode() { return str.hashCode(); }
  public boolean equals(Object word) {
    return (word instanceof Word) && str.equals(((Word) word).str);
  }
}