Examples with Attr edu.mit.csail.sdg.ast.Attr used on opensource projects

Example 1 with Attr

use of edu.mit.csail.sdg.ast.Attr in project org.alloytools.alloy by AlloyTools.

the class A4SolutionReader method parseSig.

/**
 * Parse sig/set.
 */
private Sig parseSig(String id, int depth) throws IOException, Err {
    Sig ans = id2sig.get(id);
    if (ans != null)
        return ans;
    XMLNode node = nmap.get(id);
    if (node == null)
        throw new IOException("Unknown SigID " + id + " encountered.");
    if (!node.is("sig"))
        throw new IOException("ID " + id + " is not a sig.");
    String label = label(node);
    Attr isAbstract = yes(node, "abstract") ? Attr.ABSTRACT : null;
    Attr isOne = yes(node, "one") ? Attr.ONE : null;
    Attr isLone = yes(node, "lone") ? Attr.LONE : null;
    Attr isSome = yes(node, "some") ? Attr.SOME : null;
    Attr isPrivate = yes(node, "private") ? Attr.PRIVATE : null;
    Attr isMeta = yes(node, "meta") ? Attr.META : null;
    Attr isEnum = yes(node, "enum") ? Attr.ENUM : null;
    Attr isExact = yes(node, "exact") ? Attr.EXACT : null;
    if (yes(node, "builtin")) {
        if (label.equals(UNIV.label)) {
            id2sig.put(id, UNIV);
            return UNIV;
        }
        if (label.equals(SIGINT.label)) {
            id2sig.put(id, SIGINT);
            return SIGINT;
        }
        if (label.equals(SEQIDX.label)) {
            id2sig.put(id, SEQIDX);
            return SEQIDX;
        }
        if (label.equals(STRING.label)) {
            id2sig.put(id, STRING);
            return STRING;
        }
        throw new IOException("Unknown builtin sig: " + label + " (id=" + id + ")");
    }
    if (depth > nmap.size())
        throw new IOException("Sig " + label + " (id=" + id + ") is in a cyclic inheritance relationship.");
    List<Sig> parents = null;
    TupleSet ts = factory.noneOf(1);
    for (XMLNode sub : node) {
        if (sub.is("atom")) {
            ts.add(factory.tuple(sub.getAttribute("label")));
            continue;
        }
        if (!sub.is("type"))
            continue;
        Sig parent = parseSig(sub.getAttribute("ID"), depth + 1);
        if (parents == null)
            parents = new ArrayList<Sig>();
        parents.add(parent);
    }
    if (parents == null) {
        String parentID = node.getAttribute("parentID");
        Sig parent = parseSig(parentID, depth + 1);
        if (!(parent instanceof PrimSig))
            throw new IOException("Parent of sig " + label + " (id=" + id + ") must not be a subset sig.");
        for (Expr choice : choices) if (choice instanceof PrimSig && parent == ((PrimSig) choice).parent && ((Sig) choice).label.equals(label)) {
            ans = (Sig) choice;
            choices.remove(choice);
            break;
        }
        if (ans == null) {
            ans = new PrimSig(label, (PrimSig) parent, isAbstract, isLone, isOne, isSome, isPrivate, isMeta, isEnum);
            allsigs.add(ans);
        }
    } else {
        for (Expr choice : choices) if (choice instanceof SubsetSig && ((Sig) choice).label.equals(label) && sameset(parents, ((SubsetSig) choice).parents)) {
            ans = (Sig) choice;
            choices.remove(choice);
            break;
        }
        if (ans == null) {
            ans = new SubsetSig(label, parents, isExact, isLone, isOne, isSome, isPrivate, isMeta);
            allsigs.add(ans);
        }
    }
    id2sig.put(id, ans);
    expr2ts.put(ans, ts);
    if (ans instanceof PrimSig) {
        // Add the atoms in this SIG into all parent sigs
        for (PrimSig ans2 = ((PrimSig) ans).parent; ans2 != null && !ans2.builtin; ans2 = ans2.parent) {
            TupleSet ts2 = expr2ts.get(ans2);
            if (ts2 == null)
                ts2 = ts.clone();
            else {
                ts2 = ts2.clone();
                ts2.addAll(ts);
            }
            expr2ts.put(ans2, ts2);
        }
    }
    return ans;
}