content: /* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
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   *   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
   *
   *    https://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.
   ****************************************************************/
  
  
  package org.apache.cayenne.wocompat.parser;
  
  /**
   * 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.
     */
    @Override
  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;
    }
  
    /**
     * 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();
     }
  
  }
  