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/* Generated By:JavaCC: Do not edit this line. TokenMgrError.java Version 3.0 */
package net.sf.mongodb_jdbc_driver.zql;

public class TokenMgrError extends Error
{

	private static final long serialVersionUID = 8909947407025442408L;

	/*
	 * Ordinals for various reasons why an Error of this type can be thrown.
	 */

	/**
	 * Lexical error occured.
	 */
	static final int LEXICAL_ERROR = 0;

	/**
	 * An attempt wass made to create a second instance of a static token manager.
	 */
	static final int STATIC_LEXER_ERROR = 1;

	/**
	 * Tried to change to an invalid lexical state.
	 */
	static final int INVALID_LEXICAL_STATE = 2;

	/**
	 * Detected (and bailed out of) an infinite loop in the token manager.
	 */
	static final int LOOP_DETECTED = 3;

	/**
	 * Indicates the reason why the exception is thrown. It will have one of the above 4 values.
	 */
	int errorCode;

	/**
	 * Replaces unprintable characters by their espaced (or unicode escaped) equivalents in the given string
	 */
	protected static final String addEscapes(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();
	}

	/**
	 * Returns a detailed message for the Error when it is thrown by the token manager to indicate a lexical
	 * error. Parameters : EOFSeen : indicates if EOF caused the lexicl error curLexState : lexical state in
	 * which this error occured errorLine : line number when the error occured errorColumn : column number when
	 * the error occured errorAfter : prefix that was seen before this error occured curchar : the offending
	 * character Note: You can customize the lexical error message by modifying this method.
	 */
	protected static String LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn,
		String errorAfter, char curChar)
	{
		return ("Lexical error at line "
			+ errorLine
			+ ", column "
			+ errorColumn
			+ ".  Encountered: "
			+ (EOFSeen ? " " : ("\"" + addEscapes(String.valueOf(curChar)) + "\"") + " (" + (int) curChar
				+ "), ") + "after : \"" + addEscapes(errorAfter) + "\"");
	}

	/**
	 * You can also modify the body of this method to customize your error messages. For example, cases like
	 * LOOP_DETECTED and INVALID_LEXICAL_STATE are not of end-users concern, so you can return something like :
	 * "Internal Error : Please file a bug report .... " from this method for such cases in the release version
	 * of your parser.
	 */
	public String getMessage()
	{
		return super.getMessage();
	}

	/*
	 * Constructors of various flavors follow.
	 */

	public TokenMgrError()
	{
	}

	public TokenMgrError(String message, int reason)
	{
		super(message);
		errorCode = reason;
	}

	public TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter,
		char curChar, int reason)
	{
		this(LexicalError(EOFSeen, lexState, errorLine, errorColumn, errorAfter, curChar), reason);
	}
}