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Corese is a Semantic Web Factory (triple store and SPARQL endpoint) implementing RDF, RDFS, SPARQL 1.1 Query and Update, Shacl. STTL. LDScript.

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#
# Path extension defined as function
#
insert data {
    us:Jack foaf:age "20" .
    
    us:test a sh:NodeShape ;
    sh:targetSubjectsOf foaf:age ;
    sh:path (foaf:age [xsh:function [ us:cast(xsd:integer)]]) ;
    sh:datatype xsd:integer .
}

@public 
function us:cast(source, node, param) {
    let ((fun) = param) {
        xt:print("cast:", st:turtle(node), funcall(fun, node));
        xt:list(funcall(fun, node))
    }
}