func (expr *FuncCall) ToRDF(graph *argo.Graph) (term argo.Term) {
term = argo.NewAnonNode()
graph.AddTriple(term, argo.A, str2term(expr.URI))
for uri, arg := range expr.Args {
graph.AddTriple(term, str2term(uri), arg.ToRDF(graph))
}
return term
}
func (f *Func) ToRDF(graph *argo.Graph) (term argo.Term) {
term = str2term(f.URI)
graph.AddTriple(term, argo.A, LOOP.Get("Function"))
if len(f.Args) > 0 {
argsTerm := argo.NewAnonNode()
graph.AddTriple(term, LOOP.Get("args"), argsTerm)
graph.AddTriple(argsTerm, argo.A, argo.RDF.Get("Bag"))
argsList := graph.EncodeContainer(argsTerm)
for _, arg := range f.Args {
argsList <- arg.ToRDF(graph)
}
close(argsList)
}
var bodyList chan argo.Term
for _, stmt := range f.Body {
po, isPO := stmt.(*PredicateObjectPair)
if isPO {
var subject, object argo.Term
if po.SubjVar == "" {
subject = term
} else {
subject = str2term(po.SubjVar)
}
predicate := str2term(po.Predicate)
res, isRes := po.Object.(ResourceObject)
if isRes {
object = str2term(string(res))
} else {
lit := po.Object.(*LiteralObject)
object = argo.NewLiteralWithLanguageAndDatatype(lit.Value, lit.Language, str2term(lit.Datatype))
}
graph.AddTriple(subject, predicate, object)
} else {
expr := stmt.(Expression)
if bodyList == nil {
bodyTerm := argo.NewAnonNode()
graph.AddTriple(term, LOOP.Get("code"), bodyTerm)
bodyList = graph.EncodeList(bodyTerm)
}
bodyList <- expr.ToRDF(graph)
}
}
if bodyList != nil {
close(bodyList)
}
return term
}