/** \brief Union: this = this UNION ( expression ) */
Selector & operator |= ( const Selector & selector)
{
if (is_null()) {
m_expr = selector.m_expr;
}
else {
add_binary_op(SelectorNodeType::UNION, selector);
}
return *this;
}
/** \brief Difference: this = this - ( expression ) */
Selector & operator -= ( const Selector & selector)
{ return add_binary_op(SelectorNodeType::DIFFERENCE, selector); }
Selector & operator &= ( const Part& part)
{ return add_binary_op(SelectorNodeType::INTERSECTION, Selector(part)); }
/** \brief Intersection: this = this INTERSECT ( expression ) */
Selector & operator &= ( const Selector & selector)
{ return add_binary_op(SelectorNodeType::INTERSECTION, selector); }