tokenproduction.java

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/*
 * Copyright © 2002 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
 * California 95054, U.S.A. All rights reserved.  Sun Microsystems, Inc. has
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 * these intellectual property rights may include one or more of the U.S.
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package org.javacc.parser;

/**
 * Describes the various regular expression productions.
 */

public class TokenProduction {

  /**
   * Definitions of constants that identify the kind of regular
   * expression production this is.
   */
  public static final int TOKEN  = 0,
                          SKIP   = 1,
                          MORE   = 2,
                          SPECIAL = 3;

  /**
   * The image of the above constants.
   */
  public static final String[] kindImage = {
    "TOKEN", "SKIP", "MORE", "SPECIAL"
  };

  /**
   * The starting line and column of this token production.
   */
  public int line, column;

  /**
   * The states in which this regular expression production exists.  If
   * this array is null, then "<*>" has been specified and this regular
   * expression exists in all states.  However, this null value is
   * replaced by a String array that includes all lexical state names
   * during the semanticization phase.
   */
  public String[] lexStates;

  /**
   * The kind of this token production - TOKEN, SKIP, MORE, or SPECIAL.
   */
  public int kind;

  /**
   * The list of regular expression specifications that comprise this
   * production.  Each entry is a "RegExprSpec".
   */
  public java.util.Vector respecs = new java.util.Vector();

  /**
   * This is true if this corresponds to a production that actually
   * appears in the input grammar.  Otherwise (if this is created to
   * describe a regular expression that is part of the BNF) this is set
   * to false.
   */
  public boolean isExplicit = true;

  /**
   * This is true if case is to be ignored within the regular expressions
   * of this token production.
   */
  public boolean ignoreCase = false;

  /**
   * The first and last tokens from the input stream that represent this
   * production.
   */
  public Token firstToken, lastToken;

}