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

/**
 * 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
{

	private static final long serialVersionUID = 2811456444026411929L;

	/**
	 * 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: 
	 */
	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();
	}

}