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/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */

package org.gvsig.symbology.fmap.labeling.parse;

/**

 * 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 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 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;

  /**

   * 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();

    }

    StringBuffer expected = new StringBuffer();

    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.append(tokenImage[expectedTokenSequences[i][j]]).append(' ');

      }

      if (expectedTokenSequences[i][expectedTokenSequences[i].length - 1] != 0) {

        expected.append("...");

      }

      expected.append(eol).append("    ");

    }

    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.toString();

    return retval;

  }

  /**

   * The end of line string for this machine.

   */

  protected String eol = System.getProperty("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();

   }

}