Examples with Null catdata.Null used on opensource projects

Example 6 with Null

use of catdata.Null in project fql by CategoricalData.

the class InstExpRaw method eval.

@Override
public synchronized Instance<Ty, En, Sym, Fk, Att, Gen, Sk, ID, Chc<Sk, Pair<ID, Att>>> eval(AqlEnv env) {
    Schema<Ty, En, Sym, Fk, Att> sch = schema.eval(env);
    Collage<Ty, En, Sym, Fk, Att, Gen, Sk> col = new Collage<>(sch.collage());
    Set<Pair<Term<Ty, En, Sym, Fk, Att, Gen, Sk>, Term<Ty, En, Sym, Fk, Att, Gen, Sk>>> eqs0 = new HashSet<>();
    for (String k : imports) {
        @SuppressWarnings("unchecked") Instance<Ty, En, Sym, Fk, Att, Gen, Sk, ID, Chc<Sk, Pair<ID, Att>>> v = env.defs.insts.get(k);
        col.addAll(v.collage());
        eqs0.addAll(v.eqs());
    }
    for (Pair<String, String> p : gens) {
        String gen = p.first;
        String ty = p.second;
        if (col.ens.contains(new En(ty))) {
            col.gens.put(new Gen(gen), new En(ty));
        } else if (col.tys.contains(new Ty(ty))) {
            col.sks.put(new Sk(gen), new Ty(ty));
        } else {
            throw new LocException(find("generators", p), "The sort for " + gen + ", namely " + ty + ", is not declared as a type or entity");
        }
    }
    for (Pair<RawTerm, RawTerm> eq : eqs) {
        try {
            Map<String, Chc<Ty, En>> ctx = Collections.emptyMap();
            Triple<Ctx<Var, Chc<Ty, En>>, Term<Ty, En, Sym, Fk, Att, Gen, Sk>, Term<Ty, En, Sym, Fk, Att, Gen, Sk>> eq0 = RawTerm.infer1x(ctx, eq.first, eq.second, null, col, "", sch.typeSide.js).first3();
            eqs0.add(new Pair<>(eq0.second, eq0.third));
            col.eqs.add(new Eq<>(new Ctx<>(), eq0.second, eq0.third));
        } catch (RuntimeException ex) {
            ex.printStackTrace();
            throw new LocException(find("equations", eq), "In equation " + eq.first + " = " + eq.second + ", " + ex.getMessage());
        }
    }
    AqlOptions strat = new AqlOptions(options, col, env.defaults);
    boolean interpret_as_algebra = (boolean) strat.getOrDefault(AqlOption.interpret_as_algebra);
    boolean dont_check_closure = (boolean) strat.getOrDefault(AqlOption.import_dont_check_closure_unsafe);
    if (interpret_as_algebra) {
        Ctx<En, Set<Gen>> ens0x = new Ctx<>(Util.revS(col.gens.map));
        Ctx<En, Collection<Gen>> ens0 = ens0x.map(x -> (Collection<Gen>) x);
        if (!col.sks.isEmpty()) {
            throw new RuntimeException("Cannot have generating labelled nulls with import_as_theory");
        }
        Ctx<Ty, Collection<Null<?>>> tys0 = new Ctx<>();
        for (Ty ty : sch.typeSide.tys) {
            tys0.put(ty, new HashSet<>());
        }
        Ctx<Gen, Ctx<Fk, Gen>> fks0 = new Ctx<>();
        Ctx<Gen, Ctx<Att, Term<Ty, Void, Sym, Void, Void, Void, Null<?>>>> atts0 = new Ctx<>();
        for (Gen gen : col.gens.keySet()) {
            fks0.put(gen, new Ctx<>());
            atts0.put(gen, new Ctx<>());
        }
        for (Pair<Term<Ty, En, Sym, Fk, Att, Gen, Sk>, Term<Ty, En, Sym, Fk, Att, Gen, Sk>> e : eqs0) {
            Term<Ty, En, Sym, Fk, Att, Gen, Sk> lhs = e.first;
            Term<Ty, En, Sym, Fk, Att, Gen, Sk> rhs = e.second;
            if (rhs.gen != null && lhs.fk != null && lhs.arg.gen != null) {
                fks0.get(lhs.arg.gen).put(lhs.fk, rhs.gen);
            } else if (lhs.gen != null && rhs.fk != null && rhs.arg.gen != null) {
                fks0.get(rhs.arg.gen).put(rhs.fk, lhs.gen);
            } else if (rhs.obj != null && lhs.att != null && lhs.arg.gen != null) {
                atts0.get(lhs.arg.gen).put(lhs.att, Term.Obj(rhs.obj, rhs.ty));
            } else if (lhs.obj != null && rhs.att != null && rhs.arg.gen != null) {
                atts0.get(rhs.arg.gen).put(rhs.att, Term.Obj(lhs.obj, lhs.ty));
            } else {
                throw new RuntimeException("import_as_theory not compatible with equation " + lhs + " = " + rhs + "; each equation must be of the form gen.fk=gen or gen.att=javaobject");
            }
        }
        Ctx<Null<?>, Term<Ty, En, Sym, Fk, Att, Gen, Null<?>>> extraRepr = new Ctx<>();
        for (Gen gen : col.gens.keySet()) {
            for (Att att : sch.attsFrom(col.gens.get(gen))) {
                if (!atts0.get(gen).containsKey(att)) {
                    atts0.get(gen).put(att, InstExpImport.objectToSk(sch, null, gen, att, tys0, extraRepr, false, false));
                }
            }
        }
        ImportAlgebra<Ty, En, Sym, Fk, Att, Gen, Null<?>> alg = new ImportAlgebra<Ty, En, Sym, Fk, Att, Gen, Null<?>>(sch, ens0, tys0, fks0, atts0, Object::toString, Object::toString, dont_check_closure);
        return new SaturatedInstance(alg, alg, (Boolean) strat.getOrDefault(AqlOption.require_consistency), (Boolean) strat.getOrDefault(AqlOption.allow_java_eqs_unsafe), true, extraRepr);
    }
    InitialAlgebra<Ty, En, Sym, Fk, Att, Gen, Sk, ID> initial = new InitialAlgebra<>(strat, sch, col, new It(), Object::toString, Object::toString);
    return new LiteralInstance<>(sch, col.gens.map, col.sks.map, eqs0, initial.dp(), initial, (Boolean) strat.getOrDefault(AqlOption.require_consistency), (Boolean) strat.getOrDefault(AqlOption.allow_java_eqs_unsafe));
}