xjavadoc

Class TokenMgrError

public class TokenMgrError extends Error

Token Manager Error.
Field Summary
interrorCode
Indicates the reason why the exception is thrown.
static intINVALID_LEXICAL_STATE
Tried to change to an invalid lexical state.
static intLEXICAL_ERROR
Lexical error occurred.
static intLOOP_DETECTED
Detected (and bailed out of) an infinite loop in the token manager.
static intSTATIC_LEXER_ERROR
An attempt was made to create a second instance of a static token manager.
Constructor Summary
TokenMgrError()
No arg constructor.
TokenMgrError(String message, int reason)
Constructor with message and reason.
TokenMgrError(boolean EOFSeen, int lexState, int errorLine, int errorColumn, String errorAfter, char curChar, int reason)
Full Constructor.
Method Summary
protected static StringaddEscapes(String str)
Replaces unprintable characters by their escaped (or unicode escaped) equivalents in the given string
StringgetMessage()
You can also modify the body of this method to customize your error messages.
protected static StringLexicalError(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.

Field Detail

errorCode

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

INVALID_LEXICAL_STATE

static final int INVALID_LEXICAL_STATE
Tried to change to an invalid lexical state.

LEXICAL_ERROR

static final int LEXICAL_ERROR
Lexical error occurred.

LOOP_DETECTED

static final int LOOP_DETECTED
Detected (and bailed out of) an infinite loop in the token manager.

STATIC_LEXER_ERROR

static final int STATIC_LEXER_ERROR
An attempt was made to create a second instance of a static token manager.

Constructor Detail

TokenMgrError

public TokenMgrError()
No arg constructor.

TokenMgrError

public TokenMgrError(String message, int reason)
Constructor with message and reason.

TokenMgrError

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

Method Detail

addEscapes

protected static final String addEscapes(String str)
Replaces unprintable characters by their escaped (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.

LexicalError

protected 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. Parameters : EOFSeen : indicates if EOF caused the lexical error curLexState : lexical state in which this error occurred errorLine : line number when the error occurred errorColumn : column number when the error occurred errorAfter : prefix that was seen before this error occurred curchar : the offending character Note: You can customize the lexical error message by modifying this method.