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

java.lang.Object
  extended byedu.vub.at.objects.natives.NATNil
      extended byedu.vub.at.objects.natives.NATByCopy
          extended byedu.vub.at.objects.natives.grammar.NATAbstractGrammar
              extended byedu.vub.at.objects.natives.grammar.AGExpression
                  extended byedu.vub.at.objects.natives.grammar.AGTabulation
All Implemented Interfaces:
ATAbstractGrammar, ATConversions, ATExpression, ATNil, ATObject, ATStatement, ATTabulation, java.io.Serializable

public final class AGTabulation
extends AGExpression
implements ATTabulation

Author:
tvc The native implementation of a tabulaton AG element.
See Also:
Serialized Form

Field Summary
private  ATExpression idxExp_
           
private  ATExpression tblExp_
           
 
Fields inherited from class edu.vub.at.objects.natives.NATNil
_INSTANCE_
 
Constructor Summary
AGTabulation(ATExpression tbl, ATExpression idx)
           
 
Method Summary
 ATExpression base_getIndexExpression()
           
 ATExpression base_getTableExpression()
           
 ATObject meta_eval(ATContext ctx)
          To evaluate a tabulation, evaluate the tabulation expression to a table, evaluate the index expression into a valid index, and then access the table at the given index slot.
 NATText meta_print()
          Prints out the object in a human-readable way.
 ATObject meta_quote(ATContext ctx)
          Quoting a tabulation results in a new quoted tabulation AGTBL(tbl,idx).quote(ctx) = AGTBL(tbl.quote(ctx),idx.quote(ctx))
 
Methods inherited from class edu.vub.at.objects.natives.grammar.AGExpression
base_asExpression, 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_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

tblExp_

private final ATExpression tblExp_

idxExp_

private final ATExpression idxExp_
Constructor Detail

AGTabulation

public AGTabulation(ATExpression tbl,
                    ATExpression idx)
Method Detail

base_getTableExpression

public ATExpression base_getTableExpression()
Specified by:
base_getTableExpression in interface ATTabulation

base_getIndexExpression

public ATExpression base_getIndexExpression()
Specified by:
base_getIndexExpression in interface ATTabulation

meta_eval

public ATObject meta_eval(ATContext ctx)
                   throws InterpreterException
To evaluate a tabulation, evaluate the tabulation expression to a table, evaluate the index expression into a valid index, and then access the table at the given index slot. AGTBL(tbl,idx).eval(ctx) = tbl.eval(ctx).at(idx.eval(ctx))

Specified by:
meta_eval in interface ATObject
Overrides:
meta_eval in class NATNil
Returns:
the value of the indexed table slot.
Throws:
InterpreterException

meta_quote

public ATObject meta_quote(ATContext ctx)
                    throws InterpreterException
Quoting a tabulation results in a new quoted tabulation AGTBL(tbl,idx).quote(ctx) = AGTBL(tbl.quote(ctx),idx.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