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The ANTLR 3 tool.
There is a newer version: 3.5.3
/*
 * [The "BSD license"]
 *  Copyright (c) 2010 Terence Parr
 *  All rights reserved.
 *
 *  Redistribution and use in source and binary forms, with or without
 *  modification, are permitted provided that the following conditions
 *  are met:
 *  1. Redistributions of source code must retain the above copyright
 *      notice, this list of conditions and the following disclaimer.
 *  2. 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.
 *  3. The name of the author may not be used to endorse or promote products
 *      derived from this software without specific prior written permission.
 *
 *  THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.antlr.codegen;

import org.antlr.Tool;
import org.antlr.analysis.Label;
import org.antlr.misc.Utils;
import org.stringtemplate.v4.ST;
import org.antlr.tool.Grammar;

public class DelphiTarget extends Target 
{
  public DelphiTarget() { 
    targetCharValueEscape['\n'] = "'#10'";    
    targetCharValueEscape['\r'] = "'#13'";    
    targetCharValueEscape['\t'] = "'#9'";   
    targetCharValueEscape['\b'] = "\\b";    
    targetCharValueEscape['\f'] = "\\f";    
    targetCharValueEscape['\\'] = "\\";   
    targetCharValueEscape['\''] = "''";   
    targetCharValueEscape['"'] = "'";
  } 

  protected ST chooseWhereCyclicDFAsGo(Tool tool,
                           CodeGenerator generator,
                           Grammar grammar,
                           ST recognizerST,
                           ST cyclicDFAST)
  {
    return recognizerST;
  }

	@Override
  public String encodeIntAsCharEscape(int v)
  {
    if (v <= 127)
    {
      String hex1 = Integer.toHexString(v | 0x10000).substring(3, 5);
      return "'#$" + hex1 + "'";
    }
    String hex = Integer.toHexString(v | 0x10000).substring(1, 5);
    return "'#$" + hex + "'";
  }
  
	@Override
  public String getTargetCharLiteralFromANTLRCharLiteral(
    CodeGenerator generator,
    String literal)
  {
    StringBuilder buf = new StringBuilder();
    int c = Grammar.getCharValueFromGrammarCharLiteral(literal);
    if ( c