edu.ksu.cis.kdd.util.parser
Class TokenMgrError

java.lang.Object
  java.lang.Throwable
      java.lang.Exception
          java.lang.RuntimeException
              edu.ksu.cis.kdd.util.parser.TokenMgrError

All Implemented Interfaces:

java.io.Serializable

public class TokenMgrError

extends java.lang.RuntimeException

See Also:

Serialized Form

Field Summary

int	errorCode Indicates the reason why the exception is thrown.
static int	INVALID_LEXICAL_STATE Tried to change to an invalid lexical state.
static int	LEXICAL_ERROR Lexical error occured.
static int	LOOP_DETECTED Detected (and bailed out of) an infinite loop in the token manager.
int	STATIC_LEXER_ERROR An attempt wass made to create a second instance of a static token manager.

Constructor Summary

TokenMgrError()

TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, java.lang.String errorAfter, char curChar, int reason)

TokenMgrError(java.lang.String message, int reason)

Method Summary

protected static java.lang.String	addEscapes(java.lang.String str) Replaces unprintable characters by their espaced (or unicode escaped) equivalents in the given string
java.lang.String	getMessage() You can also modify the body of this method to customize your error messages.

Methods inherited from class java.lang.Throwable

fillInStackTrace, getCause, getLocalizedMessage, getStackTrace, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

LEXICAL_ERROR

public static final int LEXICAL_ERROR

Lexical error occured.

See Also:

Constant Field Values

STATIC_LEXER_ERROR

public final int STATIC_LEXER_ERROR

An attempt wass made to create a second instance of a static token manager.

See Also:

Constant Field Values

INVALID_LEXICAL_STATE

public static final int INVALID_LEXICAL_STATE

Tried to change to an invalid lexical state.

See Also:

Constant Field Values

LOOP_DETECTED

public static final int LOOP_DETECTED

Detected (and bailed out of) an infinite loop in the token manager.

See Also:

Constant Field Values

errorCode

public int errorCode

Indicates the reason why the exception is thrown. It will have one of the above 4 values.

Constructor Detail

TokenMgrError

public TokenMgrError()

TokenMgrError

public TokenMgrError(java.lang.String message,
                     int reason)

TokenMgrError

public TokenMgrError(boolean EOFSeen,
                     int lexState,
                     int errorLine,
                     int errorColumn,
                     java.lang.String errorAfter,
                     char curChar,
                     int reason)

Method Detail

addEscapes

protected static final java.lang.String addEscapes(java.lang.String str)

Replaces unprintable characters by their espaced (or unicode escaped) equivalents in the given string

getMessage

public java.lang.String getMessage()

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.