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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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# SHACL Interpreter
 
template {
   xt:size(?g) st:nl()
   xt:syntax(st:turtle, ?g)
}
where {
   bind (sh:fast(true) as ?fast)
   bind (sh:shacl() as ?g)
}

@beforeShacl
function us:beforeshacl(focus) {
    xt:print("@beforeShacl")
    ;us:myprettyfocus(focus)
}

@afterShacl
function us:aftershacl(g) {
    xt:print("@afterShacl");
    xt:print("report:", xt:size(g))
}

function us:myprettyfocus(focus) {
    xt:print("focus:");
    if (datatype(focus) = dt:mappings) {
        for ((sh list) in focus) {
            xt:print("shape:", sh);
            xt:print("nodes:", xt:size(list));
            xt:print()
        }
    }
    else {
        xt:print(focus)
    }
}