private static <S extends AstNode<S>> boolean addIntern(ArrayList<S> list, int index, S element) {
if (element == null) {
return false;
} else {
switch (element.getNodeType()) {
case AstNode.NT_NODE_LIST:
return addAllIntern(list, index, element);
case AstNode.NT_TEXT:
return addTextIntern(list, index, (AstStringNode<S>) element);
default:
list.add(index, element);
return true;
}
}
}
@SuppressWarnings("unchecked")
private static <S extends AstNode<S>> S setTextIntern(
ArrayList<S> list, int index, AstStringNode<S> text) {
if (text.getContent().isEmpty()) {
return list.remove(index);
} else {
if (index > 0 && !text.hasAttributes()) {
S prev = list.get(index - 1);
if (prev.getNodeType() == AstNode.NT_TEXT && !prev.hasAttributes()) {
try {
list.set(index - 1, (S) mergeTextNodes((AstStringNode<S>) prev, text));
return list.remove(index);
} catch (CloneNotSupportedException e) {
// Just set, don't merge
}
}
}
return list.set(index, (S) text);
}
}