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JavaCC is a parser/scanner generator for Java.
There is a newer version: 7.0.13
/* Copyright (c) 2006, Sun Microsystems, Inc.
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 *     * Redistributions of source code must retain the above copyright notice,
 *       this list of conditions and the following disclaimer.
 *     * Redistributions in binary form must reproduce the above copyright
 *       notice, this list of conditions and the following disclaimer in the
 *       documentation and/or other materials provided with the distribution.
 *     * Neither the name of the Sun Microsystems, Inc. nor the names of its
 *       contributors may be used to endorse or promote products derived from
 *       this software without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF
 * THE POSSIBILITY OF SUCH DAMAGE.
 */


package org.javacc.jjdoc;

import org.javacc.parser.CppCodeProduction;
import org.javacc.parser.Expansion;
import org.javacc.parser.JavaCodeProduction;
import org.javacc.parser.NonTerminal;
import org.javacc.parser.NormalProduction;
import org.javacc.parser.RegularExpression;
import org.javacc.parser.TokenProduction;

/**
 * A report generator for a grammar.
 * @author timp
 * @since 11-Dec-2006
 *
 */
public interface Generator {

  /**
   * Output string with entity substitution for brackets and ampersands.
   * @param s the String to output
   */
  void text(String s);

  /**
   * Output String.
   * @param s String to output
   */
  void print(String s);

  /**
   * Output document header.
   */
  void documentStart();

  /**
   * Output document footer.
   */
  void documentEnd();

  /**
   * Output Special Tokens.
   * @param s tokens to output
   */
  void specialTokens(String s);

  
  
  void handleTokenProduction(TokenProduction tp);
  
//  /**
//   * Output start of a TokenProduction.
//   * @param tp the TokenProduction being output
//   */
//  void tokenStart(TokenProduction tp);
//
//  /**
//   * Output end of a TokenProduction.
//   * @param tp the TokenProduction being output
//   */
//  void tokenEnd(TokenProduction tp);

  /**
   * Output start of non-terminal.
   */
  void nonterminalsStart();

  /**
   * Output end of non-terminal.
   */
  void nonterminalsEnd();

  /**
   * Output start of tokens.
   */
  void tokensStart();

  /**
   * Output end of tokens.
   */
  void tokensEnd();

  /**
   * Output comment from a production.
   * @param jp the JavaCodeProduction to output
   */
  void javacode(JavaCodeProduction jp);

  /**
   * Output comment from a production.
   * @param cp the CppCodeProduction to output
   */
  void cppcode(CppCodeProduction cp);

  /**
   * Output start of a normal production.
   * @param np the NormalProduction being output
   */
  void productionStart(NormalProduction np);

  /**
   * Output end of a normal production.
   * @param np the NormalProduction being output
   */
  void productionEnd(NormalProduction np);

  /**
   * Output start of an Expansion.
   * @param e Expansion being output
   * @param first whether this is the first expansion
   */
  void expansionStart(Expansion e, boolean first);

  /**
   * Output end of Expansion.
   * @param e Expansion being output
   * @param first whether this is the first expansion
   */
  void expansionEnd(Expansion e, boolean first);

  /**
   * Output start of non-terminal.
   * @param nt the NonTerminal being output
   */
  void nonTerminalStart(NonTerminal nt);

  /**
   * Output end of non-terminal.
   * @param nt the NonTerminal being output
   */
  void nonTerminalEnd(NonTerminal nt);

  /**
   * Output start of regular expression.
   * @param re the RegularExpression being output
   */
  void reStart(RegularExpression re);

  /**
   * Output end of regular expression.
   * @param re the RegularExpression being output
   */
  void reEnd(RegularExpression re);

  /**
   * Log debug messages.
   * @param message the string to log
   */
  void debug(String message);

  /**
   * Log informational messages.
   * @param message the string to log
   */
  void info(String message);

  /**
   * Log warning messages.
   * @param message the string to log
   */
  void warn(String message);

  /**
   * Log error messages.
   * @param message the string to log
   */
  void error(String message);
}