/*
 *  Licensed to the Apache Software Foundation (ASF) under one
 *  or more contributor license agreements.  See the NOTICE file
 *  distributed with this work for additional information
 *  regarding copyright ownership.  The ASF licenses this file
 *  to you under the Apache License, Version 2.0 (the
 *  "License"); you may not use this file except in compliance
 *  with the License.  You may obtain a copy of the License at
 * 
 *  http://www.apache.org/licenses/LICENSE-2.0
 * 
 *  Unless required by applicable law or agreed to in writing,
 *  software distributed under the License is distributed on an
 *  "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 *  KIND, either express or implied.  See the License for the
 *  specific language governing permissions and limitations
 *  under the License.
 */
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
package org.apache.myfaces.buildtools.maven2.plugin.javascript.javascript20parser;

/**
 * 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 Exception
{

  /**
   * 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
   * followng this token will (therefore) be the first error token.
   */
  public Token currentToken;

  /**
   * 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;

  /**
   * The end of line string for this machine.
   */
  protected String eol = System.getProperty("line.separator", "\n");

  /**
   * 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("");
    specialConstructor = true;
    currentToken = currentTokenVal;
    expectedTokenSequences = expectedTokenSequencesVal;
    tokenImage = 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.
   */

  public ParseException()
  {
    super();
    specialConstructor = false;
  }

  public ParseException(String message)
  {
    super(message);
    specialConstructor = false;
  }

  /**
   * 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 (!specialConstructor)
    {
      return super.getMessage();
    }

    String expected = "";
    int    maxSize = 0;

    for (int i = 0; i < expectedTokenSequences.length; i++)
    {

      if (maxSize < expectedTokenSequences[i].length)
      {
        maxSize = expectedTokenSequences[i].length;
      }

      for (int j = 0; j < expectedTokenSequences[i].length; j++)
      {
        expected += tokenImage[expectedTokenSequences[i][j]] + " ";
      }

      if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0)
      {
        expected += "...";
      }

      expected += eol + "    ";
    }

    String retval = "Encountered \"";
    Token  tok = currentToken.next;

    for (int i = 0; i < maxSize; i++)
    {

      if (i != 0)
      {
        retval += " ";
      }

      if (tok.kind == 0)
      {
        retval += tokenImage[0];

        break;
      }

      retval += add_escapes(tok.image);
      tok = tok.next;
    }

    retval += "\" at line " + currentToken.next.beginLine + ", column " +
      currentToken.next.beginColumn;
    retval += "." + eol;

    if (expectedTokenSequences.length == 1)
    {
      retval += "Was expecting:" + eol + "    ";
    }
    else
    {
      retval += "Was expecting one of:" + eol + "    ";
    }

    retval += expected;

    return retval;
  }

  /**
   * 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();
  }

}