| Methods Summary |
|---|
| protected void | calcFirstPos(org.apache.xerces.impl.dtd.models.CMStateSet toSet)
if (type() == XSModelGroupImpl.MODELGROUP_CHOICE) {
// Its the the union of the first positions of our children.
toSet.setTo(fLeftChild.firstPos());
toSet.union(fRightChild.firstPos());
}
else if (type() == XSModelGroupImpl.MODELGROUP_SEQUENCE) {
//
// If our left child is nullable, then its the union of our
// children's first positions. Else is our left child's first
// positions.
//
toSet.setTo(fLeftChild.firstPos());
if (fLeftChild.isNullable())
toSet.union(fRightChild.firstPos());
}
else {
throw new RuntimeException("ImplementationMessages.VAL_BST");
}
|
| protected void | calcLastPos(org.apache.xerces.impl.dtd.models.CMStateSet toSet)
if (type() == XSModelGroupImpl.MODELGROUP_CHOICE) {
// Its the the union of the first positions of our children.
toSet.setTo(fLeftChild.lastPos());
toSet.union(fRightChild.lastPos());
}
else if (type() == XSModelGroupImpl.MODELGROUP_SEQUENCE) {
//
// If our right child is nullable, then its the union of our
// children's last positions. Else is our right child's last
// positions.
//
toSet.setTo(fRightChild.lastPos());
if (fRightChild.isNullable())
toSet.union(fLeftChild.lastPos());
}
else {
throw new RuntimeException("ImplementationMessages.VAL_BST");
}
|
| final org.apache.xerces.impl.dtd.models.CMNode | getLeft()
return fLeftChild;
|
| final org.apache.xerces.impl.dtd.models.CMNode | getRight()
return fRightChild;
|
| public boolean | isNullable()
//
// If its an alternation, then if either child is nullable then
// this node is nullable. If its a concatenation, then both of
// them have to be nullable.
//
if (type() == XSModelGroupImpl.MODELGROUP_CHOICE)
return (fLeftChild.isNullable() || fRightChild.isNullable());
else if (type() == XSModelGroupImpl.MODELGROUP_SEQUENCE)
return (fLeftChild.isNullable() && fRightChild.isNullable());
else
throw new RuntimeException("ImplementationMessages.VAL_BST");
|
