Examples with OplPresTrans catdata.opl.OplExp.OplPresTrans used on opensource projects

Example 1 with OplPresTrans

use of catdata.opl.OplExp.OplPresTrans in project fql by CategoricalData.

the class OplOps method visit.

@Override
public OplObject visit(Program<OplExp> env, OplColim e) {
    OplObject o = ENV.get(e.name);
    if (!(o instanceof OplGraph)) {
        throw new RuntimeException("Not a graph: " + e.name);
    }
    OplGraph<String, String> shape = (OplGraph<String, String>) o;
    OplObject base0 = ENV.get(e.base);
    String typeSide;
    if (base0 instanceof OplSig) {
        typeSide = e.base;
        OplUnion u0 = new OplUnion(new LinkedList<>(shape.nodes), typeSide);
        OplObject u1 = u0.accept(env, this);
        OplSchema<String, String, String> u = (OplSchema<String, String, String>) u1;
        Map<String, Set<String>> equivs = new HashMap<>();
        Map<String, String> equivs0 = new HashMap<>();
        for (String schname : shape.nodes) {
            OplSchema<String, String, String> sch = (OplSchema<String, String, String>) ENV.get(schname);
            for (String ename : sch.entities) {
                Set<String> set = new HashSet<>();
                set.add(schname + "_" + ename);
                equivs.put(schname + "_" + ename, set);
            }
        }
        // : type check colimit
        for (String mname : shape.edges.keySet()) {
            Pair<String, String> mt = shape.edges.get(mname);
            String s = mt.first;
            String t = mt.second;
            OplSchema<String, String, String> s0 = (OplSchema<String, String, String>) ENV.get(s);
            OplTyMapping<String, String, String, String, String> m0 = (OplTyMapping<String, String, String, String, String>) ENV.get(mname);
            if (!m0.src0.equals(s)) {
                throw new RuntimeException("Source of " + m0 + " is " + m0.src + " and not " + s + "as expected");
            }
            if (!m0.dst0.equals(t)) {
                throw new RuntimeException("Target of " + m0 + " is " + m0.dst + " and not " + t + "as expected");
            }
            for (String ob : s0.entities) {
                String ob0 = m0.m.sorts.get(ob);
                Set<String> set1 = equivs.get(s + "_" + ob);
                Set<String> set2 = equivs.get(t + "_" + ob0);
                set1.addAll(set2);
                equivs.put(s + "_" + ob, set1);
                equivs.put(t + "_" + ob0, set1);
            }
        }
        for (String k : equivs.keySet()) {
            List<String> v = new LinkedList<>(equivs.get(k));
            v.sort(String.CASE_INSENSITIVE_ORDER);
            equivs0.put(k, Util.sep(v, "__"));
        }
        Set<String> entities = new HashSet<>(equivs0.values());
        Map<String, Pair<List<String>, String>> edges = new HashMap<>();
        Map<String, Pair<List<String>, String>> attrs = new HashMap<>();
        List<Triple<OplCtx<String, String>, OplTerm<String, String>, OplTerm<String, String>>> pathEqs = new LinkedList<>();
        List<Triple<OplCtx<String, String>, OplTerm<String, String>, OplTerm<String, String>>> obsEqs = new LinkedList<>();
        Function<String, String> fun = x -> {
            if (equivs0.containsKey(x)) {
                return equivs0.get(x);
            }
            return x;
        };
        for (String edge : u.toSchema0().edges.keySet()) {
            Pair<List<String>, String> ty = u.toSchema0().edges.get(edge);
            edges.put(edge, new Pair<>(ty.first.stream().map(fun).collect(Collectors.toList()), fun.apply(ty.second)));
        }
        for (String attr : u.toSchema0().attrs.keySet()) {
            Pair<List<String>, String> ty = u.toSchema0().attrs.get(attr);
            attrs.put(attr, new Pair<>(ty.first.stream().map(fun).collect(Collectors.toList()), fun.apply(ty.second)));
        }
        for (Triple<OplCtx<String, String>, OplTerm<String, String>, OplTerm<String, String>> eq : u.toSchema0().pathEqs) {
            OplCtx<String, String> ctx = new OplCtx<>(eq.first.values2().stream().map(x -> new Pair<>(x.first, fun.apply(x.second))).collect(Collectors.toList()));
            pathEqs.add(new Triple<>(ctx, fun2(equivs0, eq.second), fun2(equivs0, eq.third)));
        }
        for (Triple<OplCtx<String, String>, OplTerm<String, String>, OplTerm<String, String>> eq : u.toSchema0().obsEqs) {
            OplCtx<String, String> ctx = new OplCtx<>(eq.first.values2().stream().map(x -> new Pair<>(x.first, fun.apply(x.second))).collect(Collectors.toList()));
            obsEqs.add(new Triple<>(ctx, fun2(equivs0, eq.second), fun2(equivs0, eq.third)));
        }
        for (String mname : shape.edges.keySet()) {
            Pair<String, String> mt = shape.edges.get(mname);
            String s = mt.first;
            String t = mt.second;
            OplSchema<String, String, String> s0 = (OplSchema<String, String, String>) ENV.get(s);
            // OplSchema<String, String, String> t0 = (OplSchema<String,
            // String, String>) ENV.get(t);
            OplTyMapping<String, String, String, String, String> m0 = (OplTyMapping<String, String, String, String, String>) ENV.get(mname);
            for (String edge : s0.projE().symbols.keySet()) {
                Pair<OplCtx<String, String>, OplTerm<String, String>> edge2 = m0.m.symbols.get(edge);
                List<OplTerm<String, String>> args = edge2.first.vars0.keySet().stream().map((Function<String, OplTerm<String, String>>) OplTerm::new).collect(Collectors.toList());
                OplTerm<String, String> lhs = fun2(equivs0, new OplTerm<>(s + "_" + edge, args));
                OplCtx<String, String> ctx = new OplCtx<>(edge2.first.values2().stream().map(x -> new Pair<>(x.first, fun.apply(s + "_" + x.second))).collect(Collectors.toList()));
                OplTerm<String, String> rhs = fun2(equivs0, prepend(t, edge2.second));
                pathEqs.add(new Triple<>(ctx, lhs, rhs));
            }
            for (String edge : s0.projA().symbols.keySet()) {
                Pair<OplCtx<String, String>, OplTerm<String, String>> edge2 = m0.m.symbols.get(edge);
                List<OplTerm<String, String>> args = edge2.first.vars0.keySet().stream().map((Function<String, OplTerm<String, String>>) OplTerm::new).collect(Collectors.toList());
                OplTerm<String, String> lhs = fun2(equivs0, new OplTerm<>(s + "_" + edge, args));
                OplCtx<String, String> ctx = new OplCtx<>(edge2.first.values2().stream().map(x -> new Pair<>(x.first, fun.apply(s + "_" + x.second))).collect(Collectors.toList()));
                OplTerm<String, String> rhs = fun2(equivs0, prepend(t, edge2.second));
                obsEqs.add(new Triple<>(ctx, lhs, rhs));
            }
        }
        OplSCHEMA0<String, String, String> ret = new OplSCHEMA0<>(new HashMap<>(), entities, edges, attrs, pathEqs, obsEqs, typeSide);
        OplSchema retsch = (OplSchema) ret.accept(env, this);
        e.compiled.put("Colimit", ret);
        for (String schname : shape.nodes) {
            OplSchema<String, String, String> sch = (OplSchema<String, String, String>) ENV.get(schname);
            Map<String, String> inj_sorts = new HashMap<>();
            Map<String, Pair<OplCtx<String, String>, OplTerm<String, String>>> inj_symbols = new HashMap<>();
            for (String ename : sch.entities) {
                inj_sorts.put(ename, fun.apply(schname + "_" + ename));
            }
            for (String c1 : sch.projEA().symbols.keySet()) {
                Pair<List<String>, String> t = sch.projEA().symbols.get(c1);
                List<Pair<String, String>> l = new LinkedList<>();
                List<OplTerm<String, String>> vs = new LinkedList<>();
                for (String s1 : t.first) {
                    String v = (String) retsch.sig.fr.next();
                    vs.add(new OplTerm<>(v));
                    l.add(new Pair<>(v, fun.apply(schname + "_" + s1)));
                }
                OplCtx<String, String> ctx = new OplCtx<>(l);
                OplTerm<String, String> value = fun2(equivs0, new OplTerm<>(schname + "_" + c1, vs));
                inj_symbols.put(c1, new Pair<>(ctx, value));
            }
            OplMapping<String, String, String, String, String> mapping = new OplMapping<>(inj_sorts, inj_symbols, schname, "Colimit");
            // : name of colimit
            OplTyMapping<String, String, String, String, String> tm = new OplTyMapping<>(schname, "Colimit", sch, retsch, mapping);
            tm.extend().validate(sch.sig, retsch.sig);
            e.compiled.put(schname + "To" + "Colimit", mapping);
        }
        return e;
    } else if (base0 instanceof OplSchema) {
        OplSchema sch2 = (OplSchema) base0;
        // OplSCHEMA0 sch = sch2.toSchema0();
        List<Pair<OplTerm<Chc<String, String>, String>, OplTerm<Chc<String, String>, String>>> equations = new LinkedList<>();
        // List<Pair<OplTerm<Object, String>, OplTerm<Object, String>>> equations1 = new LinkedList<>();
        Map<String, String> gens = new HashMap<>();
        Map<String, Integer> prec = new HashMap<>();
        for (String s : shape.nodes) {
            OplInst<String, String, String, String> toAdd = (OplInst<String, String, String, String>) ENV.get(s);
            for (Object gen : toAdd.P.gens.keySet()) {
                Object ty = toAdd.P.gens.get(gen);
                gens.put(s + "_" + gen, ty.toString());
            }
            for (Object gen : toAdd.P.prec.keySet()) {
                if (toAdd.P.gens.keySet().contains(gen)) {
                    if (toAdd.P.prec.containsKey(gen)) {
                        prec.put(s + "_" + gen, toAdd.P.prec.get(gen));
                    }
                } else {
                    if (toAdd.P.prec.containsKey(gen)) {
                        prec.put(toAdd.P.S + "_" + gen, toAdd.P.prec.get(gen));
                    }
                }
            }
            for (Pair<OplTerm<Chc<String, String>, String>, OplTerm<Chc<String, String>, String>> tr : toAdd.P.equations) {
                OplTerm lhs1 = prepend3(s, tr.first);
                OplTerm rhs1 = prepend3(s, tr.second);
                equations.add(new Pair<>(lhs1, rhs1));
            }
        }
        for (String mname : shape.edges.keySet()) {
            Pair<String, String> mt = shape.edges.get(mname);
            String s = mt.first;
            String t = mt.second;
            OplInst<String, String, String, String> s0 = (OplInst<String, String, String, String>) ENV.get(s);
            // OplSchema<String, String, String> t0 = (OplSchema<String,
            // String, String>) ENV.get(t);
            OplPresTrans<String, String, String, String, String> m0 = (OplPresTrans<String, String, String, String, String>) ENV.get(mname);
            for (String edge : s0.projE().gens.keySet()) {
                Pair<OplCtx<String, String>, OplTerm<Chc<String, String>, String>> edge2 = m0.mapping.symbols.get(Chc.inRight(edge));
                OplTerm<Chc<String, String>, String> lhs = new OplTerm<>(Chc.inRight(s + "_" + edge), new LinkedList<>());
                equations.add(new Pair<>(lhs, prepend3(t, edge2.second)));
            }
        }
        OplPres<String, String, String, String> pres = new OplPres<>(prec, e.base, sch2.sig, gens, equations);
        OplInst<String, String, String, String> colimInst = new OplInst<>(e.base, "?", null);
        colimInst.validate(sch2, pres, null);
        e.compiled.put("ColimitInstance", colimInst);
        for (String s : shape.nodes) {
            OplInst<String, String, String, String> toAdd = (OplInst<String, String, String, String>) ENV.get(s);
            Map<String, Map<String, OplTerm<Chc<String, String>, String>>> inj_map = new HashMap<>();
            for (String entity : toAdd.S.entities) {
                inj_map.put(entity, new HashMap<>());
            }
            for (Object gen : toAdd.P.gens.keySet()) {
                Object ty = toAdd.P.gens.get(gen);
                gens.put(s + "_" + gen, ty.toString());
                Map<String, OplTerm<Chc<String, String>, String>> m = inj_map.get(ty);
                OplTerm<Chc<String, String>, String> term = new OplTerm<>(Chc.inRight(s + "_" + gen), new LinkedList<>());
                m.put((String) gen, term);
            }
            // OplPresTrans
            OplPresTrans<String, String, String, String, String> inj = new OplPresTrans<>(inj_map, s, "ColimitInstance", toAdd.P, pres);
            e.compiled.put(s + "ToColimitInstance", inj);
        }
        return colimInst;
    }
    throw new RuntimeException("Report your program to Ryan");
}

Example 2 with OplPresTrans

use of catdata.opl.OplExp.OplPresTrans in project fql by CategoricalData.

the class OplOps method visit.

@Override
public OplObject visit(Program<OplExp> env, OplSigma e) {
    OplObject F = ENV.get(e.F);
    OplObject I = ENV.get(e.I);
    if (F instanceof OplMapping) {
        OplMapping F0 = (OplMapping) F;
        if (I instanceof OplPres) {
            OplPres I0 = (OplPres) I;
            return F0.sigma(I0);
        } else if (I instanceof OplPresTrans) {
            OplPresTrans h = (OplPresTrans) I;
            return F0.sigma(h);
        }
        throw new RuntimeException("Not a presentation of an instance or transform: " + e.I);
    }
    if (F instanceof OplTyMapping) {
        OplTyMapping F0 = (OplTyMapping) F;
        if (I instanceof OplInst) {
            OplInst I0 = (OplInst) I;
            OplInst ret = new OplInst<>(F0.dst0, "?", I0.J0);
            ret.validate(F0.dst, F0.extend().sigma(I0.P), I0.J);
            return ret;
        } else if (I instanceof OplPresTrans) {
            OplPresTrans h = (OplPresTrans) I;
            OplPresTrans z = F0.extend().sigma(h);
            z.src1 = new OplInst<>("?", "?", h.src1.J0);
            z.dst1 = new OplInst<>("?", "?", h.src1.J0);
            z.src1.validate(F0.dst, z.src, h.src1.J);
            z.dst1.validate(F0.dst, z.dst, h.src1.J);
            return z;
        }
        throw new RuntimeException("Not an instance: " + e.I + "\n\n " + I.getClass());
    }
    throw new RuntimeException("Not a mapping: " + e.F);
}

Example 3 with OplPresTrans

use of catdata.opl.OplExp.OplPresTrans in project fql by CategoricalData.

the class OplWarehouse method addBlanks.

// TODO aql alphabetize tabs
// TODO aql  heuristic: if something already there, leave it.  otherwise, create new
private void addBlanks() {
    switch(state) {
        case INITIAL:
            if (!bindings.containsKey(THEORY)) {
                bindings.put(THEORY, new OplSig<>(new VIt(), new HashMap<>(), new HashSet<>(), new HashMap<>(), new LinkedList<>()));
            }
            break;
        case THEORY:
            if (!bindings.containsKey(SHAPE)) {
                bindings.put(SHAPE, new OplGraph<String, String>(new HashSet<>(), new HashMap<>()));
            }
            break;
        case SHAPE:
            {
                OplGraph<String, String> shape = (OplGraph<String, String>) bindings.get(SHAPE);
                for (String en : shape.nodes) {
                    if (bindings.containsKey(SCHEMA + "_" + en)) {
                        // TODO: aql false
                        continue;
                    }
                    bindings.put(SCHEMA + "_" + en, new OplSCHEMA0<String, String, String>(new HashMap<>(), new HashSet<>(), new HashMap<>(), new HashMap<>(), new LinkedList<>(), new LinkedList<>(), THEORY));
                }
                break;
            }
        case SCHEMA:
            {
                OplGraph<String, String> shape = (OplGraph<String, String>) bindings.get(SHAPE);
                for (String ed : shape.edges.keySet()) {
                    if (bindings.containsKey(MAPPING + "_" + ed)) {
                        continue;
                    }
                    String src = SCHEMA + "_" + shape.edges.get(ed).first;
                    // String dst = SCHEMA + "_" + shape.edges.get(ed).second;
                    OplSCHEMA0<String, String, String> src0 = (OplSCHEMA0<String, String, String>) bindings.get(src);
                    Map<String, String> sorts = new HashMap<>();
                    for (String x : src0.entities) {
                        sorts.put(x, "?");
                    }
                    Map<String, Pair<OplCtx<String, String>, OplTerm<String, String>>> symbols = new HashMap<>();
                    for (String g : src0.attrs.keySet()) {
                        OplCtx<String, String> ctx = new OplCtx<>(Util.singList(new Pair<>("x", "?")));
                        OplTerm<String, String> term = new OplTerm<>("?");
                        symbols.put(g, new Pair<>(ctx, term));
                    }
                    for (String g : src0.edges.keySet()) {
                        OplCtx<String, String> ctx = new OplCtx<>(Util.singList(new Pair<>("t", "?")));
                        OplTerm<String, String> term = new OplTerm<>("?");
                        symbols.put(g, new Pair<>(ctx, term));
                    }
                    bindings.put(MAPPING + "_" + ed, new OplMapping<>(sorts, symbols, src, SCHEMA + "_" + shape.edges.get(ed).second));
                }
                break;
            }
        case MAPPING:
            {
                OplGraph<String, String> shape = (OplGraph<String, String>) bindings.get(SHAPE);
                Set<String> en2 = shape.nodes.stream().map(x -> SCHEMA + "_" + x).collect(Collectors.toSet());
                Map<String, Pair<String, String>> ed2 = new HashMap<>();
                for (String e : shape.edges.keySet()) {
                    Pair<String, String> x = shape.edges.get(e);
                    String l = SCHEMA + "_" + x.first;
                    ed2.put(MAPPING + "_" + e, new Pair<>(l, SCHEMA + "_" + x.second));
                }
                OplGraph<String, String> shape2 = new OplGraph<>(en2, ed2);
                // TODO: aql needs to compile to here
                computeColimit(bindings, shape2, THEORY);
                for (String en : shape.nodes) {
                    if (bindings.containsKey(INSTANCE + "_" + en)) {
                        // TODO aql false
                        continue;
                    }
                    bindings.put(INSTANCE + "_" + en, new OplInst0<>(new OplPres<>(new HashMap<>(), SCHEMA + "_" + en, null, new HashMap<>(), new LinkedList<>())));
                }
                break;
            }
        case INSTANCE:
            {
                OplGraph<String, String> shape = (OplGraph<String, String>) bindings.get(SHAPE);
                for (String ed : shape.edges.keySet()) {
                    String en = shape.edges.get(ed).first;
                    String en2 = shape.edges.get(ed).second;
                    String src = INSTANCE + "_" + ed + "_forward";
                    bindings.put(src, new OplSigma(MAPPING + "_" + ed, INSTANCE + "_" + en));
                    if (bindings.containsKey(TRANSFORM + "_" + ed + "_forward")) {
                        continue;
                    }
                    OplMapping<String, String, String, String, String> mmm = (OplMapping<String, String, String, String, String>) bindings.get(MAPPING + "_" + ed);
                    // TODO: aql factor getting into separate method, or use compiler
                    OplInst0<String, String, String, String> src1 = (OplInst0<String, String, String, String>) bindings.get(INSTANCE + "_" + en);
                    OplInst0<String, String, String, String> src0 = (OplInst0<String, String, String, String>) bindings.get(INSTANCE + "_" + en2);
                    OplSCHEMA0<String, String, String> src0_sch = (OplSCHEMA0<String, String, String>) bindings.get(src0.P.S);
                    OplSCHEMA0<String, String, String> src1_sch = (OplSCHEMA0<String, String, String>) bindings.get(src1.P.S);
                    Map<String, Map<String, OplTerm<Object, String>>> sorts = new HashMap<>();
                    for (String x : src0_sch.entities) {
                        sorts.put(x, new HashMap<>());
                    }
                    for (String g : src1.P.gens.keySet()) {
                        String gty = src1.P.gens.get(g);
                        String s2 = mmm.sorts.get(gty);
                        if (s2 == null) {
                            continue;
                        }
                        Map<String, OplTerm<Object, String>> symbols = sorts.get(s2);
                        if (symbols != null) {
                            symbols.put(g, new OplTerm<>("?"));
                        }
                    }
                    bindings.put(TRANSFORM + "_" + ed + "_forward", new OplPresTrans<String, String, String, String, String>(sorts, src, INSTANCE + "_" + shape.edges.get(ed).second));
                }
                break;
            }
        case TRANSFORM:
            OplGraph<String, String> shape = (OplGraph<String, String>) bindings.get(SHAPE);
            for (String en : shape.nodes) {
                bindings.put(INSTANCE + "_" + en + "_colimit", new OplSigma(MAPPING + "_" + SCHEMA + "_" + en + "_colimit", INSTANCE + "_" + en));
            }
            Map<String, Pair<String, String>> ed2 = new HashMap<>();
            for (String e : shape.edges.keySet()) {
                Pair<String, String> x = shape.edges.get(e);
                String l = INSTANCE + "_" + x.first + "_colimit";
                // String en = x.first.get(0);
                String en = x.second;
                bindings.put(TRANSFORM + "_" + e + "_colimit", new OplSigma(MAPPING + "_" + SCHEMA + "_" + en + "_colimit", TRANSFORM + "_" + e + "_forward"));
                ed2.put(TRANSFORM + "_" + e + "_colimit", new Pair<>(l, INSTANCE + "_" + x.second + "_colimit"));
            }
            Set<String> en2 = shape.nodes.stream().map(x -> INSTANCE + "_" + x + "_colimit").collect(Collectors.toSet());
            OplGraph<String, String> shape2 = new OplGraph<>(en2, ed2);
            bindings.put(SCHEMA + "_for_result", shape2);
            bindings.put(FINISHED, new OplExp.OplString("colimit " + SCHEMA + "_Colimit" + " " + SCHEMA + "_for_result"));
            // bindings.put(FINISHED + " all", new OplExp.OplString(complete().toString()));
            break;
        default:
            break;
    }
}

Example 4 with OplPresTrans

use of catdata.opl.OplExp.OplPresTrans in project fql by CategoricalData.

the class OplParser method toTrans_2.

private static OplExp toTrans_2(Object c) {
    Tuple3 t = (Tuple3) c;
    if (!t.a.toString().equals("transpres")) {
        throw new RuntimeException();
    }
    Map<String, Map<String, OplTerm>> map = new HashMap<>();
    org.jparsec.functors.Pair q = (org.jparsec.functors.Pair) t.b;
    List<String> imports = q.a == null ? new LinkedList<>() : (List<String>) ((org.jparsec.functors.Pair) q.a).b;
    Tuple3 tb = (Tuple3) q.b;
    List<Tuple5> l = (List<Tuple5>) tb.b;
    for (Tuple5 x : l) {
        String name = (String) x.a;
        List<Tuple5> y = (List<Tuple5>) x.d;
        Map<String, OplTerm> m = new HashMap<>();
        for (Tuple5 z : y) {
            String xx = (String) z.b;
            // OplTerm yy = toTermNoVars(z.d);
            OplTerm yy = toTerm(new HashSet<>(), new HashSet<>(), z.d, false);
            if (m.containsKey(xx)) {
                throw new DoNotIgnore("Duplicate argument: " + xx);
            }
            m.put(xx, yy);
        }
        if (map.containsKey(name)) {
            throw new DoNotIgnore("Duplicate sort: " + name);
        }
        map.put(name, m);
    }
    Tuple4 tc = (Tuple4) t.c;
    OplPresTrans ret = new OplPresTrans(map, (String) tc.b, (String) tc.d);
    ret.imports = new HashSet<>(imports);
    return ret;
}

Example 5 with OplPresTrans

use of catdata.opl.OplExp.OplPresTrans in project fql by CategoricalData.

the class OplOps method visit.

@Override
public OplObject visit(Program<OplExp> env, OplPresTrans e) {
    OplObject src = ENV.get(e.src0);
    OplObject dst = ENV.get(e.dst0);
    if (src instanceof OplPres && dst instanceof OplPres) {
        OplPres src0 = (OplPres) src;
        OplPres dst0 = (OplPres) dst;
        for (Object k2 : e.imports) {
            String k = (String) k2;
            OplExp o = env.exps.get(k);
            if (!(o instanceof OplPresTrans)) {
                throw new RuntimeException("Not a typed mapping: " + k);
            }
            OplPresTrans a = (OplPresTrans) o;
            for (Object z : a.pre_map.keySet()) {
                if (!e.pre_map.containsKey(z)) {
                    e.pre_map.put(z, new HashMap());
                }
                Map u = (Map) a.pre_map.get(z);
                Map v = (Map) e.pre_map.get(z);
                Util.putAllSafely(v, u);
            }
        }
        // ?
        e.validateNotReally(src0, dst0);
        // e.toMapping(); redundant
        return e;
    } else if (src instanceof OplInst && dst instanceof OplInst) {
        OplInst src0 = (OplInst) src;
        OplInst dst0 = (OplInst) dst;
        for (Object k2 : e.imports) {
            String k = (String) k2;
            OplExp o = env.exps.get(k);
            if (!(o instanceof OplPresTrans)) {
                throw new RuntimeException("Not a typed mapping: " + k);
            }
            OplPresTrans a = (OplPresTrans) o;
            for (Object z : a.pre_map.keySet()) {
                if (!e.pre_map.containsKey(z)) {
                    e.pre_map.put(z, new HashMap());
                }
                Map u = (Map) a.pre_map.get(z);
                Map v = (Map) e.pre_map.get(z);
                Util.putAllSafely(v, u);
            }
        }
        // ?
        e.validateNotReally(src0, dst0);
        // e.toMapping(); redundant
        return e;
    }
    throw new RuntimeException("Source or target is not a presentation or instance in " + e);
}