else if(string_iequals(node.name(), "add_closure")) {
snode = new AddClosureNode();
}
+ else if(string_iequals(node.name(), "invert")) {
+ snode = new InvertNode();
+ }
else if(string_iequals(node.name(), "mix")) {
MixNode *mix = new MixNode();
xml_read_enum(&mix->type, MixNode::type_enum, node, "type");