Module com.darkcollective.relix.parser

Package com.darkcollective.relix.parser

Class ParseException

java.lang.Object

java.lang.Throwable

java.lang.Exception

java.lang.RuntimeException

com.darkcollective.relix.parser.ParseException

All Implemented Interfaces:

Serializable

public final class ParseException
extends RuntimeException

Thrown by RelAlgebraParser when the input does not conform to the relational algebra grammar.

In addition to the standard exception message, a ParseException exposes the precise source position (line(), column()) and the offending token (found()) so callers can produce IDE-quality diagnostics. The diagnostic() method returns a multi-line string that reproduces the source line with a ^ caret under the error position.

Example message:

   Expected ')' at line 3, column 12; found ','
   π name, (Users)
              ^
 

See Also:

• Serialized Form

Constructor Summary

Constructors

Constructor	Description
ParseException(String message, String input, Token token)

Method Summary

Modifier and Type	Method	Description
int	column()
String	diagnostic()
String	found()
int	line()

Methods inherited from class java.lang.Throwable

addSuppressed, fillInStackTrace, getCause, getLocalizedMessage, getMessage, getStackTrace, getSuppressed, initCause, printStackTrace, printStackTrace, printStackTrace, setStackTrace, toString

Methods inherited from class java.lang.Object

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

Constructor Details

ParseException

public ParseException(String message,
 String input,
 Token token)

Method Details

line

public int line()

column

public int column()

found

public String found()

diagnostic

public String diagnostic()