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  /*
   * Copyright (c) 2003 The Visigoth Software Society. 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 end-user documentation included with the redistribution, if
  *    any, must include the following acknowledgement:
  *       "This product includes software developed by the
  *        Visigoth Software Society (http://www.visigoths.org/)."
  *    Alternately, this acknowledgement may appear in the software itself,
  *    if and wherever such third-party acknowledgements normally appear.
  *
  * 4. Neither the name "FreeMarker", "Visigoth", nor any of the names of the
  *    project contributors may be used to endorse or promote products derived
  *    from this software without prior written permission. For written
  *    permission, please contact visigoths@visigoths.org.
  *
  * 5. Products derived from this software may not be called "FreeMarker" or "Visigoth"
  *    nor may "FreeMarker" or "Visigoth" appear in their names
  *    without prior written permission of the Visigoth Software Society.
  *
  * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED 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 VISIGOTH SOFTWARE SOCIETY OR
  * ITS 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.
  * ====================================================================
  *
  * This software consists of voluntary contributions made by many
  * individuals on behalf of the Visigoth Software Society. For more
  * information on the Visigoth Software Society, please see
  * http://www.visigoths.org/
  */
 
 package freemarker.core;
 
This exception is thrown when parse errors are encountered. You can explicitly create objects of this exception type by calling the method generateParseException in the generated parser. You can modify this class to customize your error reporting mechanisms so long as you retain the public fields.
 
 public class ParseException extends java.io.IOException implements FMParserConstants {

  
This constructor is used by the method "generateParseException" in the generated parser. Calling this constructor generates a new object of this type with the fields "currentToken", "expectedTokenSequences", and "tokenImage" set. The boolean flag "specialConstructor" is also set to true to indicate that this constructor was used to create this object. This constructor calls its super class with the empty string to force the "toString" method of parent class "Throwable" to print the error message in the form: ParseException: <result of getMessage>
 
   public ParseException(Token currentTokenVal,
                         int[][] expectedTokenSequencesVal,
                         String[] tokenImageVal
                        )
   {
     super("");
      = true;
      = currentTokenVal;
      = expectedTokenSequencesVal;
      = tokenImageVal;
   }

  
The following constructors are for use by you for whatever purpose you can think of. Constructing the exception in this manner makes the exception behave in the normal way - i.e., as documented in the class "Throwable". The fields "errorToken", "expectedTokenSequences", and "tokenImage" do not contain relevant information. The JavaCC generated code does not use these constructors.
  protected ParseException() {
    super();
     = false;
  }
/*
  public ParseException(String message) {
    super(message);
    specialConstructor = false;
  }
*/
  public ParseException(String messageint lineNumberint columnNumber) {
      super(message);
       = false;
      this. = lineNumber;
      this. = columnNumber;
  }
  public ParseException(String messageTemplateObject tobj) {
      super(message);
       = false;
      this. = tobj.beginLine;
      this. = tobj.beginColumn;
  }

  
This variable determines which constructor was used to create this object and thereby affects the semantics of the "getMessage" method (see below).
  protected boolean specialConstructor;

  
This is the last token that has been consumed successfully. If this object has been created due to a parse error, the token following this token will (therefore) be the first error token.
  public Token currentToken;
  public int columnNumberlineNumber;

  
Each entry in this array is an array of integers. Each array of integers represents a sequence of tokens (by their ordinal values) that is expected at this point of the parse.
  public int[][] expectedTokenSequences;

  
This is a reference to the "tokenImage" array of the generated parser within which the parse error occurred. This array is defined in the generated ...Constants interface.
  public String[] tokenImage;
  private String templateName = "unknown template";
  
  public void setTemplateName(String templateName) {
      this. = templateName;
  }
  
  
This method has the standard behavior when this object has been created using the standard constructors. Otherwise, it uses "currentToken" and "expectedTokenSequences" to generate a parse error message and returns it. If this object has been created due to a parse error, and you do not catch it (it gets thrown from the parser), then this method is called during the printing of the final stack trace, and hence the correct error message gets displayed.
  public String getMessage() {
    if (!) {
      return super.getMessage() + " in " + ;
    }
    String retval = customGetMessage();
    if (retval != null) {
        return retval;
    }
    // The default JavaCC message generation stuff follows.
    String expected = "";
    int maxSize = 0;
    for (int i = 0; i < .i++) {
      if (maxSize < [i].length) {
        maxSize = [i].length;
      }
      for (int j = 0; j < [i].lengthj++) {
        expected += [[i][j]] + " ";
      }
      if ([i][[i].length - 1] != 0) {
        expected += "...";
      }
      expected +=  + "    ";
    }
    retval = "Encountered \"";
    Token tok = .;
    for (int i = 0; i < maxSizei++) {
      if (i != 0) retval += " ";
      if (tok.kind == 0) {
        retval += [0];
        break;
      }
      retval += add_escapes(tok.image);
      tok = tok.next;
    }
    retval += "\" at line " + .. + ", column " + ..;
    retval += " in " +  + "." + ;
    if (. == 1) {
      retval += "Was expecting:" +  + "    ";
    } else {
      retval += "Was expecting one of:" +  + "    ";
    }
    retval += expected;
    return retval;
  }
  public int getLineNumber() {
      return  != null ?
                             .. :
                             ;
  }
  public int getColumnNumber() {
      return  != null ?
                             .. :
                             ;
  }
  // Custom message generation
  private String customGetMessage() {
      Token nextToken = .;
      int kind = nextToken.kind;
      if (kind == ) {
          StringBuffer buf = new StringBuffer("Unexpected end of file reached.\n");
          for (int i = 0; i<.i++) {
              int[] sequence = [i];
              switch (sequence[0]) {
                  case  :
                      buf.append("Unclosed foreach directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed list directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed switch directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed if directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed compress directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed macro directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed function directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed transform directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed escape directive.\n");
                      break;
                  case  :
                      buf.append("Unclosed noescape directive.\n");
                      break;
              }
          }
          return buf.toString();
      }
      if (kind ==  || kind ==  || kind == ) {
          return "Found unexpected directive: "
              + nextToken
              + " on line " + nextToken.beginLine
              + ", column " + nextToken.beginColumn
              + "\nCheck whether you have a well-formed if-else block.";
      }
      return null;
  }

  
The end of line string for this machine.
  protected String eol = SecurityUtilities.getSystemProperty("line.separator""\n");

  
Used to convert raw characters to their escaped version when these raw version cannot be used as part of an ASCII string literal.
  protected String add_escapes(String str) {
      StringBuffer retval = new StringBuffer();
      char ch;
      for (int i = 0; i < str.length(); i++) {
        switch (str.charAt(i))
        {
           case 0 :
              continue;
           case '\b':
              retval.append("\\b");
              continue;
           case '\t':
              retval.append("\\t");
              continue;
           case '\n':
              retval.append("\\n");
              continue;
           case '\f':
              retval.append("\\f");
              continue;
           case '\r':
              retval.append("\\r");
              continue;
           case '\"':
              retval.append("\\\"");
              continue;
           case '\'':
              retval.append("\\\'");
              continue;
           case '\\':
              retval.append("\\\\");
              continue;
           default:
              if ((ch = str.charAt(i)) < 0x20 || ch > 0x7e) {
                 String s = "0000" + Integer.toString(ch, 16);
                 retval.append("\\u" + s.substring(s.length() - 4, s.length()));
              } else {
                 retval.append(ch);
              }
              continue;
        }
      }
      return retval.toString();
   }
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