Examples with Occurrence mb.nabl2.scopegraph.terms.Occurrence used on opensource projects

Example 6 with Occurrence

use of mb.nabl2.scopegraph.terms.Occurrence in project nabl by metaborg.

the class NameResolutionTerms method buildRef.

private ITerm buildRef(Occurrence ref) {
    final List<ITerm> paths = nameResolution.resolve(ref).orElseGet(() -> Set.Immutable.of()).stream().map(this::buildPath).collect(Collectors.toList());
    final ITerm result;
    if (paths.isEmpty()) {
        result = B.newAppl("NoResolution");
    } else {
        result = B.newAppl("Resolution", (ITerm) B.newList(paths));
    }
    return B.newTuple(ref, result);
}

Example 7 with Occurrence

use of mb.nabl2.scopegraph.terms.Occurrence in project nabl by metaborg.

the class NameResolutionComponent method solve.

// ------------------------------------------------------------------------------------------------------//
private Optional<SolveResult> solve(CResolve r) {
    final ITerm refTerm = unifier().findRecursive(r.getReference());
    if (!refTerm.isGround()) {
        return Optional.empty();
    }
    final Occurrence ref = Occurrence.matcher().match(refTerm, unifier()).orElseThrow(() -> new TypeException("Expected an occurrence as first argument to " + r));
    final Optional<java.util.Set<IResolutionPath<Scope, Label, Occurrence>>> maybePathsAndDeps = nameResolution.resolve(ref);
    if (!maybePathsAndDeps.isPresent()) {
        return Optional.empty();
    }
    final java.util.Set<IResolutionPath<Scope, Label, Occurrence>> paths = maybePathsAndDeps.get();
    final List<Occurrence> declarations = Paths.resolutionPathsToDecls(paths);
    final Multimap<String, String> deps = HashMultimap.create();
    deps.putAll(ref.getIndex().getResource(), declarations.stream().map(d -> d.getIndex().getResource()).collect(Collectors.toSet()));
    final SolveResult result;
    switch(declarations.size()) {
        case 0:
            {
                IMessageInfo message = r.getMessageInfo().withDefaultContent(MessageContent.builder().append(ref).append(" does not resolve.").build());
                result = SolveResult.messages(message);
                break;
            }
        case 1:
            {
                final Occurrence decl = declarations.get(0);
                result = SolveResult.constraints(ImmutableCEqual.of(r.getDeclaration(), decl, r.getMessageInfo()));
                break;
            }
        default:
            {
                IMessageInfo message = r.getMessageInfo().withDefaultContent(MessageContent.builder().append("Resolution of ").append(ref).append(" is ambiguous.").build());
                result = SolveResult.messages(message);
                break;
            }
    }
    return Optional.of(ImmutableSolveResult.copyOf(result).withDependencies(deps));
}

Example 8 with Occurrence

use of mb.nabl2.scopegraph.terms.Occurrence in project nabl by metaborg.

the class NameResolutionComponent method solve.

private Optional<SolveResult> solve(CAssoc a) {
    final ITerm declTerm = unifier().findRecursive(a.getDeclaration());
    if (!declTerm.isGround()) {
        return Optional.empty();
    }
    final Occurrence decl = Occurrence.matcher().match(declTerm, unifier()).orElseThrow(() -> new TypeException("Expected an occurrence as first argument to " + a));
    final Label label = a.getLabel();
    final List<Scope> scopes = Lists.newArrayList(scopeGraph.getExportEdges().get(decl, label));
    final SolveResult result;
    switch(scopes.size()) {
        case 0:
            {
                IMessageInfo message = a.getMessageInfo().withDefaultContent(MessageContent.builder().append(decl).append(" has no ").append(label).append(" associated scope.").build());
                result = SolveResult.messages(message);
                break;
            }
        case 1:
            {
                result = SolveResult.constraints(ImmutableCEqual.of(a.getScope(), scopes.get(0), a.getMessageInfo()));
                break;
            }
        default:
            {
                IMessageInfo message = a.getMessageInfo().withDefaultContent(MessageContent.builder().append(decl).append(" has multiple ").append(label).append(" associated scope.").build());
                result = SolveResult.messages(message);
                break;
            }
    }
    return Optional.of(result);
}

Example 9 with Occurrence

use of mb.nabl2.scopegraph.terms.Occurrence in project nabl by metaborg.

the class PolymorphismComponent method solve.

private Optional<SolveResult> solve(CInstantiate inst) {
    final ITerm declTerm = unifier().findRecursive(inst.getDeclaration());
    if (!declTerm.isGround()) {
        return Optional.empty();
    }
    final Occurrence decl = Occurrence.matcher().match(declTerm, unifier()).orElseThrow(() -> new TypeException("Expected an occurrence as first argument to " + inst));
    if (!isInstSafe.test(decl)) {
        return Optional.empty();
    }
    final Optional<ITerm> schemeTerm = getDeclProp.apply(decl, DeclProperties.TYPE_KEY);
    if (!schemeTerm.isPresent()) {
        return Optional.empty();
    }
    final Optional<Forall> forall = Forall.matcher().match(schemeTerm.get(), unifier());
    final ITerm type;
    // linked map to preserve key order
    final Map<TypeVar, ITermVar> subst = Maps.newLinkedHashMap();
    if (forall.isPresent()) {
        final Forall scheme = forall.get();
        scheme.getTypeVars().stream().forEach(v -> {
            subst.put(v, B.newVar("", fresh(v.getName())));
        });
        type = subst(scheme.getType(), subst);
    } else {
        type = schemeTerm.get();
    }
    final IConstraint constraint = // @formatter:off
    ImmutableCExists.of(subst.values(), ImmutableCConj.of(ImmutableCEqual.of(inst.getType(), type, inst.getMessageInfo()), ImmutableCEqual.of(inst.getInstVars(), B.newList(subst.keySet()), inst.getMessageInfo()), MessageInfo.empty()), inst.getMessageInfo());
    // @formatter:on
    SolveResult result = SolveResult.constraints(constraint);
    return Optional.of(result);
}

Example 10 with Occurrence

use of mb.nabl2.scopegraph.terms.Occurrence in project nabl by metaborg.

the class ScopeGraphComponent method solve.

// ------------------------------------------------------------------------------------------------------//
private boolean solve(CGDecl c) {
    final ITerm scopeTerm = unifier().findRecursive(c.getScope());
    final ITerm declTerm = unifier().findRecursive(c.getDeclaration());
    if (!(scopeTerm.isGround() && declTerm.isGround())) {
        return false;
    }
    Scope scope = Scope.matcher().match(scopeTerm, unifier()).orElseThrow(() -> new TypeException("Expected a scope as first agument to " + c));
    Occurrence decl = Occurrence.matcher().match(declTerm, unifier()).orElseThrow(() -> new TypeException("Expected an occurrence as second argument to " + c));
    scopeGraph.addDecl(scope, decl);
    return true;
}