edu.vub.at.objects.natives.grammar
Class AGDefExternalMethod

java.lang.Object
  edu.vub.at.objects.natives.NATNil
      edu.vub.at.objects.natives.NATByCopy
          edu.vub.at.objects.natives.grammar.NATAbstractGrammar
              edu.vub.at.objects.natives.grammar.AGDefExternalMethod

All Implemented Interfaces:

ATAbstractGrammar, ATConversions, ATDefExternalMethod, ATDefinition, ATExpression, ATNil, ATObject, ATStatement, java.io.Serializable

public final class AGDefExternalMethod

extends NATAbstractGrammar

implements ATDefExternalMethod

The native implementation of an external method definition abstract grammar element.

Author:

tvcutsem

See Also:

Serialized Form

Field Summary

private ATTable	argumentExps_
private ATBegin	bodyStmts_
private ATSymbol	rcvNam_
private ATSymbol	selectorExp_

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

_INSTANCE_

Constructor Summary

AGDefExternalMethod(ATSymbol rcv, ATSymbol sel, ATTable args, ATBegin bdy)

Method Summary

ATTable	base_getArguments()
ATBegin	base_getBodyExpression()
ATSymbol	base_getReceiver()
ATSymbol	base_getSelector()
ATObject	meta_eval(ATContext ctx) Evaluates the receiver symbol to an object to which a new 'closure method' will be added.
NATText	meta_print() Prints out the object in a human-readable way.
ATObject	meta_quote(ATContext ctx) Quoting an external method definition results in a new quoted external method definition.

Methods inherited from class edu.vub.at.objects.natives.grammar.NATAbstractGrammar

meta_getStripes

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

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_asHandler, 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_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_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_extend, meta_getDynamicParent, meta_getLexicalParent, meta_getStripes, meta_grabField, meta_grabMethod, meta_invoke, meta_isCloneOf, meta_isRelatedTo, meta_isStripedWith, meta_listFields, meta_listMethods, meta_lookup, meta_newInstance, meta_pass, 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_asHandler, 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

rcvNam_

private final ATSymbol rcvNam_

selectorExp_

private final ATSymbol selectorExp_

argumentExps_

private final ATTable argumentExps_

bodyStmts_

private final ATBegin bodyStmts_

Constructor Detail

AGDefExternalMethod

public AGDefExternalMethod(ATSymbol rcv,
                           ATSymbol sel,
                           ATTable args,
                           ATBegin bdy)

Method Detail

base_getReceiver

public ATSymbol base_getReceiver()

Specified by:

base_getReceiver in interface ATDefExternalMethod

base_getSelector

public ATSymbol base_getSelector()

Specified by:

base_getSelector in interface ATDefExternalMethod

base_getArguments

public ATTable base_getArguments()

Specified by:

base_getArguments in interface ATDefExternalMethod

base_getBodyExpression

public ATBegin base_getBodyExpression()

Specified by:

base_getBodyExpression in interface ATDefExternalMethod

meta_eval

public ATObject meta_eval(ATContext ctx)
                   throws InterpreterException

Evaluates the receiver symbol to an object to which a new 'closure method' will be added. Such a closure captures the current lexical scope, but not the values for 'self' and 'super'. For an explanation of this rationale, see my interface description in ATDefExternalMethod. The return value of an external method definition is always the external method itself. AGDEFEXTMTH(rcv,nam,par,bdy).eval(ctx) = rcv.eval(ctx).defineField(nam, NATCLOMTH(ctx.cur,nam,par,bdy)) This method may fail with an XIllegalOperation if the receiver is an instance of a native type (whose method dictionaries are sealed) or if the receiver is an isolate.

Specified by:

meta_eval in interface ATObject

Overrides:

meta_eval in class NATNil

Throws:

InterpreterException

meta_quote

public ATObject meta_quote(ATContext ctx)
                    throws InterpreterException

Quoting an external method definition results in a new quoted external method definition. AGDEFEXTMTH(rcv,nam,par,bdy).quote(ctx) = AGDEFEXTMTH(rcv.quote(ctx),nam.quote(ctx), par.quote(ctx), bdy.quote(ctx))

Specified by:

meta_quote in interface ATObject

Overrides:

meta_quote in class NATNil

Throws:

InterpreterException

meta_print

public NATText meta_print()
                   throws InterpreterException

Description copied from interface: ATObject

Prints out the object in a human-readable way.

Specified by:

meta_print in interface ATObject

Overrides:

meta_print in class NATNil

Throws:

InterpreterException