public void visit(ConcatenationV concatenationV)
{
int position = -1;
for (int i = 0; i < concatenationV.Children.Count; i++)
{
GrammarNodeV child = concatenationV.Children[i];
if (child.getReference() == target)
{
position = i;
break;
}
child.accept(this);
}
if (position >= 0)
{
int theLevel = (concatenationV.Children[position] as SymbolV).Level;
concatenationV.Children[position].Dispose();
concatenationV.Children.RemoveAt(position);
if (concatenationV.Children.Count == 0)
{
// we add the undefined that should have been added by the Model.Function.Delete method
UndefinedD undefinedD = concatenationV.Reference.Children[0] as UndefinedD;
concatenationV.appendChildV(new UndefinedV(undefinedD, theLevel));
}
}
}
public void visit(ConcatenationV concatenationV)
{
int position = -1;
for (int i = 0; i < concatenationV.Children.Count; i++)
{
GrammarNodeV child = concatenationV.Children[i];
if (child.getReference() == target)
position = i;
child.accept(this);
}
if (position >= 0)
{
int theLevel = (concatenationV.Children[position] as SymbolV).Level;
ChoiceV choiceV = concatenationV.getParent() as ChoiceV;
if (choiceV == null)
throw new Exception("The concatV parent was not of type choiceV");
// assert that a new choice has been added to the concatD
ChoiceD choiceD = concatenationV.Reference.Parent as ChoiceD;
if (choiceD == null)
throw new Exception("The concatV.Ref.Parent is not of type choiceD");
if (choiceD.Children.Count < 2)
throw new Exception("A new choice has not been added to the choiceD grammar.");
// assuming that the last choice to be added is the new one.
ConcatenationD concatDadded = choiceD.Children[choiceD.Children.Count - 1] as ConcatenationD;
if (concatDadded == null)
throw new Exception("The choiceD children are not of type concatD");
// assert that the new concatD has one child of type UndefinedD
if (concatDadded.Children.Count > 1)
throw new Exception("ConcatD is new and does not have one child of type UndefinedD");
UndefinedD undefinedD = concatDadded.Children[0] as UndefinedD;
if (undefinedD == null)
throw new Exception("ConcatD is new and does not have one child of type UndefinedD");
ConcatenationV newConcat = new ConcatenationV(concatDadded);
UndefinedV newUndefinedV = new UndefinedV(undefinedD, theLevel);
newConcat.appendChildV(newUndefinedV);
choiceV.appendChildV(newConcat);
}
}
