public Character next() {
if (left.hasNext()) {
return left.next();
} else if (right.hasNext()) {
return right.next();
}
throw new NoSuchElementException();
}
public boolean hasNext() {
while (next == null) {
if (leftChar == null) {
if (left.hasNext()) {
leftChar = left.next();
} else {
break;
}
}
if (right.hasNext()) {
Character c = right.next();
if (c == leftChar) {
next = c;
}
} else {
right.reset();
leftChar = null;
}
}
return next != null;
}
@Override
protected void visit(RENode.CharacterClass expr) throws RuntimeException {
expr.getExpr().accept(this);
for (int i = expr.getMin(); i > 0; i--) {
if (solver.hasNext()) {
char c = solver.next();
current.resolvingExpression.append(c);
current.buffer.append(c);
solver.reset();
} else {
throw new UnsupportedOperationException("wtf?");
}
}
}