org.omegahat.Environment.Debugger
Class BasicErrorHandler

java.lang.Object
  |
  +--org.omegahat.Environment.Debugger.BasicErrorHandler

All Implemented Interfaces:

ErrorHandler

Direct Known Subclasses:

DefaultErrorHandler, SystemErrorHandler

public abstract class BasicErrorHandler

extends java.lang.Object

implements ErrorHandler

Abstract class defining the default methods implementing an error handler for the Evaluator class.

Field Summary

protected Evaluator

evaluator Evaluator with which this error handler is associated.

Constructor Summary

BasicErrorHandler()

BasicErrorHandler(Evaluator evaluator)
"Constructs" an object of this class, caching the specified evaluator for use in other methods.

BasicErrorHandler(java.lang.Throwable e, java.lang.String msg, Evaluator eval)
Construct the error handler with an actual error from an evaluator in the form of an exception and explaining message.

Method Summary

java.lang.Object	error(java.lang.Throwable e, java.lang.String msg) Wraps this call with a call to the more thorough handler which specifies the currently active expression in which the error was raised.
abstract java.lang.Object	error(java.lang.Throwable e, java.lang.String msg, ExpressionInt expr) Standard method for handling the error.
Evaluator	evaluator() Returns the evaluator with which this error handler is associated.
Evaluator	evaluator(Evaluator e) Sets the evaluator with which this handler is associated.

Methods inherited from class java.lang.Object

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

Field Detail

evaluator

protected Evaluator evaluator

Evaluator with which this error handler is associated.

Constructor Detail

BasicErrorHandler

public BasicErrorHandler()

BasicErrorHandler

public BasicErrorHandler(Evaluator evaluator)

"Constructs" an object of this class, caching the specified evaluator for use in other methods.

BasicErrorHandler

public BasicErrorHandler(java.lang.Throwable e,
                         java.lang.String msg,
                         Evaluator eval)

Construct the error handler with an actual error from an evaluator in the form of an exception and explaining message. This uses the standard methods to report the error.

Method Detail

evaluator

public Evaluator evaluator()

Returns the evaluator with which this error handler is associated.

evaluator

public Evaluator evaluator(Evaluator e)

Sets the evaluator with which this handler is associated.

error

public java.lang.Object error(java.lang.Throwable e,
                              java.lang.String msg)

Wraps this call with a call to the more thorough handler which specifies the currently active expression in which the error was raised.

error

public abstract java.lang.Object error(java.lang.Throwable e,
                                       java.lang.String msg,
                                       ExpressionInt expr)

Standard method for handling the error.

Specified by:

error in interface ErrorHandler