/*****************************************************************************
 * 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.                                                        *
 *                                                                           *
 *                                                                           *
 * This file is part of the BeanShell Java Scripting distribution.           *
 * Documentation and updates may be found at http://www.beanshell.org/       *
 * Patrick Niemeyer (pat@pat.net)                                            *
 * Author of Learning Java, O'Reilly & Associates                            *
 *                                                                           *
 *****************************************************************************/
/* Generated By:JavaCC: Do not edit this line. ParseException.java Version 3.0 */
/* 	
	This file was auto generated, but has been modified since then.  If we
	need to regenerate it for some reason we should be careful to look at
	the notes below.  
	
	All BeanShell modifications are demarcated by "Begin BeanShell 
	Modification - ... " and "End BeanShell Modification - ..."

	Note: Please leave the ^M carriage return in the above auto-generated line 
	or JavaCC will complain about version on Win systems.

	BeanShell Modification to generated file 
	----------------------------------------

	- Added sourceFile attribute
		setErrorSourceFile()
		getErrorSourceFile()
	- Modified getMessage() to print more tersely except on debug
	  (removed "Was expecting one of...)
	- Added sourceFile info to getMessage()
	- Made ParseException extend EvalError
	- Modified constructors to use EvalError
	- Override 
		getErrorLineNumber()
		getErrorText()

*/

package bsh;

/**
 * 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.
 */
 
// Begin BeanShell Modification - public, extend EvalError
public final class ParseException extends EvalError {
// End BeanShell Modification - public, extend EvalError

	// Begin BeanShell Modification - sourceFile

	private String sourceFile = "<unknown>";

	/**
		Used to add source file info to exception
	*/
	public void setErrorSourceFile( String file ) {
		this.sourceFile = file;
	}

	public String getErrorSourceFile() { 
		return sourceFile; 
	}

	// End BeanShell Modification - sourceFile

  /**
   * 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
                       )
  {
	// Begin BeanShell Modification - constructor
	this();
	// End BeanShell Modification - constructor
    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() {
	// Begin BeanShell Modification - constructor
	this("");
	// End BeanShell Modification - constructor
    specialConstructor = false;
  }

  public ParseException(String message) {
	// Begin BeanShell Modification - super constructor args
	// null node, null callstack, ParseException knows where the error is.
	super( message, null, null );
	// End BeanShell Modification - super constructor args
    specialConstructor = false;
  }

  public ParseException(String message,Throwable cause) {
	// Begin BeanShell Modification - super constructor args
	// null node, null callstack, ParseException knows where the error is.
	super( message, null, null, cause );
	// End BeanShell Modification - super constructor args
    specialConstructor = false;
  }

  /**
   * This variable determines which constructor was used to create
   * this object and thereby affects the semantics of the
   * "getMessage" method (see below).
   * This is the same as "currentToken != null".
   */
  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;

  // Begin BeanShell Modification - moved body to overloaded getMessage()
  public String	getMessage() {
	return getMessage( false );
  }
  // End BeanShell Modification - moved body to overloaded getMessage()

  /**
   * 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.
   */
  // Begin BeanShell Modification - added debug param
  public String getMessage( boolean debug ) {
  // End BeanShell Modification - added debug param
    if (!specialConstructor) {
      return super.getRawMessage();
    }
    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 + "    ";
    }
	// Begin BeanShell Modification - added sourceFile info
    String retval = "In file: "+ sourceFile +" Encountered \"";
	// End BeanShell Modification - added sourceFile info
    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 + "." + eol;

	// Begin BeanShell Modification - made conditional on debug
	if ( debug )
	{
		if (expectedTokenSequences.length == 1) {
		  retval += "Was expecting:" + eol + "    ";
		} else {
		  retval += "Was expecting one of:" + eol + "    ";
		}

		retval += expected;
	}
	// End BeanShell Modification - made conditional on debug

    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) {
      StringBuilder retval = new StringBuilder();
      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();
   }

	// Begin BeanShell Modification - override error methods and toString

	public int getErrorLineNumber() 
	{
		if (currentToken == null) {
			String message = getMessage();
			int index = message.indexOf(" at line ");
			if (index > -1) {
				message = message.substring(index + 9);
				index = message.indexOf(',');
				try {
					if (index == -1) {
						return Integer.parseInt(message);
					}
					return Integer.parseInt(message.substring(0, index));
				} catch (NumberFormatException e) {
					// ignore, we have no valid line information, just return -1 for now
				}
			}
			return -1;
		} else {
		return currentToken.next.beginLine;
	}
	}

	public String getErrorText() { 
		// copied from generated getMessage()
		int	maxSize	= 0;
		for	(int i = 0; i <	expectedTokenSequences.length; i++) {
		  if (maxSize < expectedTokenSequences[i].length)
			maxSize	= expectedTokenSequences[i].length;
		}

		String retval = "";
		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;
		}
		
		return retval;
	}

	// End BeanShell Modification - override error methods and toString

}
