org.apache.commons.el.parser
Class TokenMgrError
Error
org.apache.commons.el.parser.TokenMgrError
public class TokenMgrError
extends Error
(package private) static int | INVALID_LEXICAL_STATE - Tried to change to an invalid lexical state.
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(package private) static int | LEXICAL_ERROR - Lexical error occured.
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(package private) static int | LOOP_DETECTED - Detected (and bailed out of) an infinite loop in the token manager.
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(package private) static int | STATIC_LEXER_ERROR - An attempt wass made to create a second instance of a static token manager.
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(package private) int | errorCode - Indicates the reason why the exception is thrown.
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private static String | LexicalError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar) - Returns a detailed message for the Error when it is thrown by the
token manager to indicate a lexical error.
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protected static String | addEscapes(String str) - Replaces unprintable characters by their espaced (or unicode escaped)
equivalents in the given string
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String | getMessage() - You can also modify the body of this method to customize your error messages.
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INVALID_LEXICAL_STATE
(package private) static final int INVALID_LEXICAL_STATE
Tried to change to an invalid lexical state.
LEXICAL_ERROR
(package private) static final int LEXICAL_ERROR
Lexical error occured.
LOOP_DETECTED
(package private) static final int LOOP_DETECTED
Detected (and bailed out of) an infinite loop in the token manager.
STATIC_LEXER_ERROR
(package private) static final int STATIC_LEXER_ERROR
An attempt wass made to create a second instance of a static token manager.
errorCode
(package private) int errorCode
Indicates the reason why the exception is thrown. It will have
one of the above 4 values.
TokenMgrError
public TokenMgrError()
TokenMgrError
public TokenMgrError(String message,
int reason)
TokenMgrError
public TokenMgrError(boolean EOFSeen,
int lexState,
int errorLine,
int errorColumn,
String errorAfter,
char curChar,
int reason)
LexicalError
private static final String LexicalError(boolean EOFSeen,
int lexState,
int errorLine,
int errorColumn,
String errorAfter,
char curChar)
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.
addEscapes
protected static final String addEscapes(String str)
Replaces unprintable characters by their espaced (or unicode escaped)
equivalents in the given string
getMessage
public 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.
Copyright (c) 2001-2002 - Apache Software Foundation