edu.vub.at.objects.natives
Class NATHandler

java.lang.Object
  edu.vub.at.objects.natives.NATNil
      edu.vub.at.objects.natives.NATByRef
          edu.vub.at.objects.natives.NATHandler

All Implemented Interfaces:

ATAbstractGrammar, ATConversions, ATExpression, ATHandler, ATNil, ATObject, ATStatement, java.io.Serializable

public class NATHandler

extends NATByRef

implements ATHandler

TODO document the class NATHandler

Author:

smostinc

See Also:

Serialized Form

Field Summary

private ATStripe	filter_
private ATClosure	handler_

Fields inherited from class edu.vub.at.objects.natives.NATNil

_INSTANCE_

Constructor Summary

NATHandler(ATStripe filter, ATClosure handler)

Method Summary

ATHandler	base_asHandler()
ATBoolean	base_canHandle(ATObject anException) Used to determine whether a handler will be triggered when an exception is raised.
ATObject	base_handle(ATObject anException) When a handler has answered that it can handle an exception, the following method is invoked, asking the handler to handle the exception.
ATTable	meta_getStripes() Returns the stripes of this object.

Methods inherited from class edu.vub.at.objects.natives.NATByRef

meta_pass, meta_resolve

Methods inherited from class edu.vub.at.objects.natives.NATNil

asAmbientTalkObject, asJavaClassUnderSymbiosis, asJavaObjectUnderSymbiosis, asNativeBoolean, asNativeException, asNativeFarReference, asNativeFraction, asNativeNumber, asNativeNumeric, asNativeTable, asNativeText, base__opeql__opeql_, base_asActorMirror, base_asAsyncMessage, base_asBegin, base_asBoolean, base_asClosure, base_asDefinition, base_asExpression, base_asFarReference, base_asField, base_asMessage, base_asMessageCreation, base_asMethod, base_asMirror, base_asNumber, base_asSplice, base_asStatement, base_asStripe, base_asSymbol, base_asTable, base_asUnquoteSplice, base_asVariableAssignment, base_init, base_isBoolean, base_isCallFrame, base_isClosure, base_isFarReference, base_isMessageCreation, base_isMethod, base_isMirror, base_isSplice, base_isStripe, base_isSymbol, base_isTable, base_isUnquoteSplice, base_isVariableAssignment, base_new, createChild, equals, isAmbientTalkObject, isJavaObjectUnderSymbiosis, isNativeBoolean, isNativeField, isNativeText, meta_addField, meta_addMethod, meta_assignField, meta_assignVariable, meta_clone, meta_defineField, meta_doesNotUnderstand, meta_eval, meta_extend, meta_getDynamicParent, meta_getLexicalParent, meta_grabField, meta_grabMethod, meta_invoke, meta_isCloneOf, meta_isRelatedTo, meta_isStripedWith, meta_listFields, meta_listMethods, meta_lookup, meta_newInstance, meta_print, meta_quote, meta_receive, meta_respondsTo, meta_select, meta_send, meta_share, readResolve, toString, writeReplace

Methods inherited from class java.lang.Object

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

Methods inherited from interface edu.vub.at.objects.ATObject

base__opeql__opeql_, base_init, base_new, meta_addField, meta_addMethod, meta_assignField, meta_assignVariable, meta_clone, meta_defineField, meta_doesNotUnderstand, meta_eval, meta_extend, meta_getDynamicParent, meta_getLexicalParent, meta_grabField, meta_grabMethod, meta_invoke, meta_isCloneOf, meta_isRelatedTo, meta_isStripedWith, meta_listFields, meta_listMethods, meta_lookup, meta_newInstance, meta_pass, meta_print, meta_quote, meta_receive, meta_resolve, meta_respondsTo, meta_select, meta_send, meta_share

Methods inherited from interface edu.vub.at.objects.coercion.ATConversions

asAmbientTalkObject, asJavaClassUnderSymbiosis, asJavaObjectUnderSymbiosis, asNativeBoolean, asNativeException, asNativeFarReference, asNativeFraction, asNativeNumber, asNativeNumeric, asNativeTable, asNativeText, base_asActorMirror, base_asAsyncMessage, base_asBegin, base_asBoolean, base_asClosure, base_asDefinition, base_asExpression, base_asFarReference, base_asField, base_asMessage, base_asMessageCreation, base_asMethod, base_asMirror, base_asNumber, base_asSplice, base_asStatement, base_asStripe, base_asSymbol, base_asTable, base_asUnquoteSplice, base_asVariableAssignment, base_isBoolean, base_isCallFrame, base_isClosure, base_isFarReference, base_isMessageCreation, base_isMethod, base_isMirror, base_isSplice, base_isStripe, base_isSymbol, base_isTable, base_isUnquoteSplice, base_isVariableAssignment, isAmbientTalkObject, isJavaObjectUnderSymbiosis, isNativeBoolean, isNativeField, isNativeText

Field Detail

filter_

private final ATStripe filter_

handler_

private final ATClosure handler_

Constructor Detail

NATHandler

public NATHandler(ATStripe filter,
                  ATClosure handler)

Method Detail

base_canHandle

public ATBoolean base_canHandle(ATObject anException)
                         throws InterpreterException

Description copied from interface: ATHandler

Used to determine whether a handler will be triggered when an exception is raised. Its primary use is to provide a hook to deviate from the default semantics, which is: def canHandle(anException) { (reflect: anException).isCloneOf(filter); };

Specified by:

base_canHandle in interface ATHandler

Throws:

InterpreterException

base_handle

public ATObject base_handle(ATObject anException)
                     throws InterpreterException

Description copied from interface: ATHandler

When a handler has answered that it can handle an exception, the following method is invoked, asking the handler to handle the exception. The default semantics is simply to invoke the associated handler closure. def handle(anException) { handler(anException) };

Specified by:

base_handle in interface ATHandler

Throws:

InterpreterException

base_asHandler

public ATHandler base_asHandler()

Specified by:

base_asHandler in interface ATConversions

Overrides:

base_asHandler in class NATNil

meta_getStripes

public ATTable meta_getStripes()
                        throws InterpreterException

Description copied from interface: ATObject

Returns the stripes of this object. Note that only the stripes that were attached directly to this object are returned, not all of the parent's stripes as well.

Specified by:

meta_getStripes in interface ATObject

Overrides:

meta_getStripes in class NATNil

Throws:

InterpreterException