Examples with Constraints mb.nabl2.constraints.Constraints used on opensource projects

Example 1 with Constraints

use of mb.nabl2.constraints.Constraints in project spoofax by metaborg.

the class ConstraintMultiFileAnalyzer method analyzeSemiIncremental.

private ISpoofaxAnalyzeResults analyzeSemiIncremental(Map<String, ISpoofaxParseUnit> changed, java.util.Set<String> removed, IMultiFileScopeGraphContext context, HybridInterpreter runtime, String strategy, IProgress progress, ICancel cancel) throws AnalysisException {
    final NaBL2DebugConfig debugConfig = context.config().debug();
    final Timer totalTimer = new Timer(true);
    final AggregateTimer collectionTimer = new AggregateTimer();
    final AggregateTimer solverTimer = new AggregateTimer();
    final AggregateTimer finalizeTimer = new AggregateTimer();
    final String globalSource = "";
    final Function1<String, String> globalFresh = base -> context.unit(globalSource).fresh().fresh(base);
    for (String input : removed) {
        context.removeUnit(input);
    }
    final int n = changed.size();
    final int w = context.units().size() / 2;
    progress.setWorkRemaining(n + w + 1);
    if (debugConfig.analysis() || debugConfig.files()) {
        logger.info("Analyzing {} files in {}.", n, context.location());
    }
    final Collection<ISpoofaxAnalyzeUnit> results = Lists.newArrayList();
    final Collection<ISpoofaxAnalyzeUnitUpdate> updateResults = Lists.newArrayList();
    try {
        // initial
        InitialResult initialResult;
        final Optional<ITerm> customInitial;
        {
            if (debugConfig.collection()) {
                logger.info("Collecting initial constraints.");
            }
            if (context.initialResult().isPresent()) {
                initialResult = context.initialResult().get();
                customInitial = context.initialResult().flatMap(r -> r.getCustomResult());
            } else {
                collectionTimer.start();
                try {
                    final ITerm globalAST = Actions.sourceTerm(globalSource, B.EMPTY_TUPLE);
                    ITerm initialResultTerm = doAction(strategy, Actions.analyzeInitial(globalSource, globalAST), context, runtime).orElseThrow(() -> new AnalysisException(context, "No initial result."));
                    initialResult = InitialResult.matcher().match(initialResultTerm).orElseThrow(() -> new AnalysisException(context, "Invalid initial results."));
                    customInitial = doCustomAction(strategy, Actions.customInitial(globalSource, globalAST), context, runtime);
                    initialResult = initialResult.withCustomResult(customInitial);
                    context.setInitialResult(initialResult);
                } finally {
                    collectionTimer.stop();
                }
            }
            if (debugConfig.collection()) {
                logger.info("Initial constraints collected.");
            }
        }
        // global parameters, that form the interface for a single unit
        final java.util.Set<ITermVar> intfVars = Sets.newHashSet();
        {
            initialResult.getArgs().getParams().stream().forEach(param -> intfVars.addAll(param.getVars()));
            initialResult.getArgs().getType().ifPresent(type -> intfVars.addAll(type.getVars()));
        }
        final SemiIncrementalMultiFileSolver solver = new SemiIncrementalMultiFileSolver(context.config().debug(), callExternal(runtime));
        // global
        ISolution initialSolution;
        {
            if (context.initialSolution().isPresent()) {
                initialSolution = context.initialSolution().get();
            } else {
                try {
                    solverTimer.start();
                    final IProgress subprogress = progress.subProgress(1);
                    GraphSolution preSolution = solver.solveGraph(ImmutableBaseSolution.of(initialResult.getConfig(), initialResult.getConstraints(), PersistentUnifier.Immutable.of()), globalFresh, cancel, subprogress);
                    preSolution = solver.reportUnsolvedGraphConstraints(preSolution);
                    initialSolution = solver.solveIntra(preSolution, intfVars, null, globalFresh, cancel, subprogress);
                    if (debugConfig.resolution()) {
                        logger.info("Reduced file constraints to {}.", initialSolution.constraints().size());
                    }
                } catch (SolverException e) {
                    throw new AnalysisException(context, e);
                } finally {
                    solverTimer.stop();
                }
                context.setInitialSolution(initialSolution);
            }
        }
        final java.util.Set<Scope> intfScopes = Sets.newHashSet();
        {
            initialResult.getArgs().getParams().stream().forEach(param -> Scope.matcher().match(param, initialSolution.unifier()).ifPresent(intfScopes::add));
        }
        // units
        final Map<String, IStrategoTerm> astsByFile = Maps.newHashMap();
        final Map<String, IMessage> failures = Maps.newHashMap();
        final Multimap<String, IMessage> ambiguitiesByFile = HashMultimap.create();
        for (Map.Entry<String, ISpoofaxParseUnit> input : changed.entrySet()) {
            final String source = input.getKey();
            final ISpoofaxParseUnit parseUnit = input.getValue();
            final ITerm ast = strategoTerms.fromStratego(parseUnit.ast());
            if (debugConfig.files()) {
                logger.info("Analyzing {}.", source);
            }
            final IMultiFileScopeGraphUnit unit = context.unit(source);
            unit.clear();
            try {
                UnitResult unitResult;
                final Optional<ITerm> customUnit;
                {
                    if (debugConfig.collection()) {
                        logger.info("Collecting constraints of {}.", source);
                    }
                    try {
                        collectionTimer.start();
                        final ITerm unitResultTerm = doAction(strategy, Actions.analyzeUnit(source, ast, initialResult.getArgs()), context, runtime).orElseThrow(() -> new AnalysisException(context, "No unit result."));
                        unitResult = UnitResult.matcher().match(unitResultTerm).orElseThrow(() -> new MetaborgException("Invalid unit results."));
                        final ITerm desugaredAST = unitResult.getAST();
                        customUnit = doCustomAction(strategy, Actions.customUnit(source, desugaredAST, customInitial.orElse(B.EMPTY_TUPLE)), context, runtime);
                        unitResult = unitResult.withCustomResult(customUnit);
                        final IStrategoTerm analyzedAST = strategoTerms.toStratego(desugaredAST);
                        astsByFile.put(source, analyzedAST);
                        ambiguitiesByFile.putAll(source, analysisCommon.ambiguityMessages(parseUnit.source(), parseUnit.ast()));
                        unit.setUnitResult(unitResult);
                    } finally {
                        collectionTimer.stop();
                    }
                    if (debugConfig.collection()) {
                        logger.info("Collected {} constraints of {}.", unitResult.getConstraints().size(), source);
                    }
                }
                {
                    final ISolution unitSolution;
                    if (debugConfig.resolution()) {
                        logger.info("Reducing {} constraints of {}.", unitResult.getConstraints().size(), source);
                    }
                    try {
                        solverTimer.start();
                        final Function1<String, String> fresh = base -> context.unit(source).fresh().fresh(base);
                        final IProgress subprogress = progress.subProgress(1);
                        GraphSolution preSolution = solver.solveGraph(ImmutableBaseSolution.of(initialResult.getConfig(), unitResult.getConstraints(), initialSolution.unifier()), fresh, cancel, subprogress);
                        preSolution = solver.reportUnsolvedGraphConstraints(preSolution);
                        unitSolution = solver.solveIntra(preSolution, intfVars, intfScopes, fresh, cancel, subprogress);
                        if (debugConfig.resolution()) {
                            logger.info("Reduced file constraints to {}.", unitSolution.constraints().size());
                        }
                    } catch (SolverException e) {
                        throw new AnalysisException(context, e);
                    } finally {
                        solverTimer.stop();
                    }
                    unit.setPartialSolution(unitSolution);
                    if (debugConfig.files() || debugConfig.resolution()) {
                        logger.info("Analyzed {}: {} errors, {} warnings, {} notes, {} unsolved constraints.", source, unitSolution.messages().getErrors().size(), unitSolution.messages().getWarnings().size(), unitSolution.messages().getNotes().size(), unitSolution.constraints().size());
                    }
                }
            } catch (MetaborgException e) {
                logger.warn("Analysis of " + source + " failed.", e);
                failures.put(source, MessageFactory.newAnalysisErrorAtTop(parseUnit.source(), "File analysis failed.", e));
            }
        }
        // solve
        final ISolution solution;
        final List<Optional<ITerm>> customUnits = Lists.newArrayList();
        {
            final List<ISolution> partialSolutions = Lists.newArrayList();
            for (IMultiFileScopeGraphUnit unit : context.units()) {
                unit.partialSolution().ifPresent(partialSolutions::add);
                unit.unitResult().map(UnitResult::getCustomResult).ifPresent(customUnits::add);
            }
            if (debugConfig.resolution()) {
                logger.info("Solving {} partial solutions.", partialSolutions.size());
            }
            ISolution sol;
            try {
                solverTimer.start();
                Function1<String, String> fresh = base -> context.unit(globalSource).fresh().fresh(base);
                IMessageInfo message = ImmutableMessageInfo.of(MessageKind.ERROR, MessageContent.of(), Actions.sourceTerm(globalSource));
                sol = solver.solveInter(initialSolution, partialSolutions, message, fresh, cancel, progress.subProgress(w));
                sol = solver.reportUnsolvedConstraints(sol);
            } catch (SolverException e) {
                throw new AnalysisException(context, e);
            } finally {
                solverTimer.stop();
            }
            if (!sol.flowSpecSolution().controlFlowGraph().isEmpty()) {
                logger.debug("CFG is not empty: calling FlowSpec dataflow solver");
                sol = new FixedPoint().entryPoint(sol, getFlowSpecTransferFunctions(context.language()));
            }
            solution = sol;
            context.setSolution(solution);
            if (debugConfig.resolution()) {
                logger.info("Project constraints solved.");
            }
        }
        // final
        FinalResult finalResult;
        final Optional<ITerm> customFinal;
        final Optional<CustomSolution> customSolution;
        {
            if (debugConfig.analysis()) {
                logger.info("Finalizing project analysis.");
            }
            finalizeTimer.start();
            try {
                ITerm finalResultTerm = doAction(strategy, Actions.analyzeFinal(globalSource), context, runtime).orElseThrow(() -> new AnalysisException(context, "No final result."));
                finalResult = FinalResult.matcher().match(finalResultTerm, solution.unifier()).orElseThrow(() -> new AnalysisException(context, "Invalid final results."));
                customFinal = doCustomAction(strategy, Actions.customFinal(globalSource, customInitial.orElse(B.EMPTY_TUPLE), Optionals.filter(customUnits)), context, runtime);
                finalResult = finalResult.withCustomResult(customFinal);
                context.setFinalResult(finalResult);
                customSolution = customFinal.flatMap(cs -> CustomSolution.matcher().match(cs, solution.unifier()));
                customSolution.ifPresent(cs -> context.setCustomSolution(cs));
            } finally {
                finalizeTimer.stop();
            }
            if (debugConfig.analysis()) {
                logger.info("Project analysis finalized.");
            }
        }
        // errors
        {
            if (debugConfig.analysis()) {
                logger.info("Processing project messages.");
            }
            Messages.Transient messageBuilder = Messages.Transient.of();
            messageBuilder.addAll(Messages.unsolvedErrors(solution.constraints()));
            messageBuilder.addAll(solution.messages().getAll());
            customSolution.map(CustomSolution::getMessages).map(IMessages::getAll).ifPresent(messageBuilder::addAll);
            IMessages messages = messageBuilder.freeze();
            IRelation3.Transient<String, MessageSeverity, IMessage> messagesByFile = HashTrieRelation3.Transient.of();
            messagesByFile(failures.values(), messagesByFile, context);
            messagesByFile(messages(messages.getAll(), solution.unifier(), context, context.location()), messagesByFile, context);
            // precondition: the messagesByFile should not contain any files that do not have corresponding units
            for (IMultiFileScopeGraphUnit unit : context.units()) {
                final String source = unit.resource();
                final java.util.Set<IMessage> fileMessages = messagesByFile.get(source).stream().map(Map.Entry::getValue).collect(Collectors2.toHashSet());
                if (changed.containsKey(source)) {
                    fileMessages.addAll(ambiguitiesByFile.get(source));
                    final boolean valid = !failures.containsKey(source);
                    final boolean success = valid && messagesByFile.get(source, MessageSeverity.ERROR).isEmpty();
                    final IStrategoTerm analyzedAST = astsByFile.get(source);
                    results.add(unitService.analyzeUnit(changed.get(source), new AnalyzeContrib(valid, success, analyzedAST != null, analyzedAST, fileMessages, -1), context));
                } else {
                    try {
                        final FileObject file = context.location().resolveFile(source);
                        updateResults.add(unitService.analyzeUnitUpdate(file, new AnalyzeUpdateData(fileMessages), context));
                    } catch (IOException ex) {
                        logger.error("Could not resolve {} to update messages", source);
                    }
                }
                messagesByFile.remove(source);
            }
            if (!messagesByFile.keySet().isEmpty()) {
                logger.error("Found messages for unanalyzed files {}", messagesByFile.keySet());
            }
            if (debugConfig.analysis() || debugConfig.files() || debugConfig.resolution()) {
                logger.info("Analyzed {} files: {} errors, {} warnings, {} notes.", n, messages.getErrors().size(), messages.getWarnings().size(), messages.getNotes().size());
            }
        }
    } catch (InterruptedException e) {
        logger.debug("Analysis was interrupted.");
    } finally {
        totalTimer.stop();
    }
    final ConstraintDebugData debugData = new ConstraintDebugData(totalTimer.stop(), collectionTimer.total(), solverTimer.total(), finalizeTimer.total());
    if (debugConfig.analysis()) {
        logger.info("{}", debugData);
    }
    return new SpoofaxAnalyzeResults(results, updateResults, context, debugData);
}

Example 2 with Constraints

use of mb.nabl2.constraints.Constraints in project spoofax by metaborg.

the class ConstraintSingleFileAnalyzer method analyzeAll.

@Override
protected ISpoofaxAnalyzeResults analyzeAll(Map<String, ISpoofaxParseUnit> changed, Set<String> removed, ISingleFileScopeGraphContext context, HybridInterpreter runtime, String strategy, IProgress progress, ICancel cancel) throws AnalysisException {
    final NaBL2DebugConfig debugConfig = context.config().debug();
    for (String input : removed) {
        context.removeUnit(input);
    }
    final int n = changed.size();
    progress.setWorkRemaining(n + 1);
    if (debugConfig.analysis() || debugConfig.files()) {
        logger.info("Analyzing {} files in {}.", n, context.location());
    }
    final Collection<ISpoofaxAnalyzeUnit> results = Lists.newArrayList();
    try {
        for (Map.Entry<String, ISpoofaxParseUnit> input : changed.entrySet()) {
            final String source = input.getKey();
            final ISpoofaxParseUnit parseUnit = input.getValue();
            final ITerm ast = strategoTerms.fromStratego(parseUnit.ast());
            if (debugConfig.files()) {
                logger.info("Analyzing {}.", source);
            }
            final ISingleFileScopeGraphUnit unit = context.unit(source);
            unit.clear();
            try {
                // initial
                InitialResult initialResult;
                final Optional<ITerm> customInitial;
                {
                    if (debugConfig.collection()) {
                        logger.info("Collecting initial constraints of {}.", source);
                    }
                    ITerm initialResultTerm = doAction(strategy, Actions.analyzeInitial(source, ast), context, runtime).orElseThrow(() -> new AnalysisException(context, "No initial result."));
                    initialResult = InitialResult.matcher().match(initialResultTerm).orElseThrow(() -> new MetaborgException("Invalid initial results."));
                    customInitial = doCustomAction(strategy, Actions.customInitial(source, ast), context, runtime);
                    initialResult = initialResult.withCustomResult(customInitial);
                    if (debugConfig.collection()) {
                        logger.info("Collected {} initial constraints of {}.", initialResult.getConstraints().size(), source);
                    }
                }
                // unit
                UnitResult unitResult;
                final Optional<ITerm> customUnit;
                {
                    if (debugConfig.collection()) {
                        logger.info("Collecting constraints of {}.", source);
                    }
                    final ITerm unitResultTerm = doAction(strategy, Actions.analyzeUnit(source, ast, initialResult.getArgs()), context, runtime).orElseThrow(() -> new AnalysisException(context, "No unit result."));
                    unitResult = UnitResult.matcher().match(unitResultTerm).orElseThrow(() -> new MetaborgException("Invalid unit results."));
                    final ITerm desugaredAST = unitResult.getAST();
                    customUnit = doCustomAction(strategy, Actions.customUnit(source, desugaredAST, customInitial.orElse(B.EMPTY_TUPLE)), context, runtime);
                    unitResult = unitResult.withCustomResult(customUnit);
                    unit.setUnitResult(unitResult);
                    if (debugConfig.collection()) {
                        logger.info("Collected {} constraints of {}.", unitResult.getConstraints().size(), source);
                    }
                }
                // solve
                ISolution solution;
                {
                    Set<IConstraint> constraints = Sets.union(initialResult.getConstraints(), unitResult.getConstraints());
                    if (debugConfig.resolution()) {
                        logger.info("Solving {} constraints of {}.", constraints.size(), source);
                    }
                    Function1<String, String> fresh = base -> context.unit(source).fresh().fresh(base);
                    final IProgress subprogress = progress.subProgress(1);
                    final SingleFileSolver solver = new SingleFileSolver(context.config().debug(), callExternal(runtime));
                    GraphSolution preSolution = solver.solveGraph(ImmutableBaseSolution.of(initialResult.getConfig(), constraints, PersistentUnifier.Immutable.of()), fresh, cancel, subprogress);
                    preSolution = solver.reportUnsolvedGraphConstraints(preSolution);
                    solution = solver.solve(preSolution, fresh, cancel, subprogress);
                    solution = solver.reportUnsolvedConstraints(solution);
                    if (!solution.flowSpecSolution().controlFlowGraph().isEmpty()) {
                        logger.debug("CFG is not empty: calling FlowSpec dataflow solver");
                        solution = new FixedPoint().entryPoint(solution, getFlowSpecTransferFunctions(context.language()));
                    }
                    unit.setSolution(solution);
                    if (debugConfig.resolution()) {
                        logger.info("Solved constraints of {}.", source);
                    }
                }
                // final
                FinalResult finalResult;
                final Optional<ITerm> customFinal;
                {
                    if (debugConfig.files()) {
                        logger.info("Finalizing analysis of {}.", source);
                    }
                    ITerm finalResultTerm = doAction(strategy, Actions.analyzeFinal(source), context, runtime).orElseThrow(() -> new AnalysisException(context, "No final result."));
                    finalResult = FinalResult.matcher().match(finalResultTerm).orElseThrow(() -> new MetaborgException("Invalid final results."));
                    customFinal = doCustomAction(strategy, Actions.customFinal(source, customInitial.orElse(B.EMPTY_TUPLE), customUnit.map(cu -> Collections.singletonList(cu)).orElse(Collections.emptyList())), context, runtime);
                    finalResult = finalResult.withCustomResult(customFinal);
                    unit.setFinalResult(finalResult);
                    if (debugConfig.files()) {
                        logger.info("Finalized analysis of {}.", source);
                    }
                }
                final IStrategoTerm analyzedAST = strategoTerms.toStratego(unitResult.getAST());
                Optional<CustomSolution> customSolution = customFinal.flatMap(CustomSolution.matcher()::match);
                customSolution.ifPresent(cs -> unit.setCustomSolution(cs));
                // errors
                final boolean success;
                {
                    if (debugConfig.files()) {
                        logger.info("Processing messages of {}.", source);
                    }
                    Messages.Transient messageBuilder = Messages.Transient.of();
                    messageBuilder.addAll(Messages.unsolvedErrors(solution.constraints()));
                    messageBuilder.addAll(solution.messages().getAll());
                    customSolution.map(CustomSolution::getMessages).map(IMessages::getAll).ifPresent(messageBuilder::addAll);
                    IMessages messages = messageBuilder.freeze();
                    success = messages.getErrors().isEmpty();
                    Iterable<IMessage> fileMessages = Iterables.concat(analysisCommon.ambiguityMessages(parseUnit.source(), parseUnit.ast()), messages(messages.getAll(), solution.unifier(), context, context.location()));
                    // result
                    results.add(unitService.analyzeUnit(parseUnit, new AnalyzeContrib(true, success, true, analyzedAST, fileMessages, -1), context));
                    if (debugConfig.analysis() || debugConfig.files()) {
                        logger.info("Analyzed {}: {} errors, {} warnings, {} notes.", source, messages.getErrors().size(), messages.getWarnings().size(), messages.getNotes().size());
                    }
                }
            } catch (MetaborgException | SolverException e) {
                logger.warn("Analysis of " + source + " failed.", e);
                Iterable<IMessage> messages = Iterables2.singleton(MessageFactory.newAnalysisErrorAtTop(parseUnit.source(), "File analysis failed.", e));
                results.add(unitService.analyzeUnit(parseUnit, new AnalyzeContrib(false, false, true, parseUnit.ast(), messages, -1), context));
            }
        }
    } catch (InterruptedException e) {
        logger.debug("Analysis was interrupted.");
    }
    if (debugConfig.analysis()) {
        logger.info("Analyzed {} files.", n);
    }
    return new SpoofaxAnalyzeResults(results, Collections.emptyList(), context);
}

Example 3 with Constraints

use of mb.nabl2.constraints.Constraints in project nabl by metaborg.

the class FixedPointSolver method solve.

public SolveResult solve(Iterable<? extends IConstraint> initialConstraints) throws InterruptedException {
    propertiesAddAll(initialConstraints);
    final IMessages.Transient messages = Messages.Transient.of();
    final Multimap<String, String> dependencies = HashMultimap.create();
    final Set<IConstraint> constraints = Sets.newHashSet(initialConstraints);
    boolean progress;
    do {
        progress = false;
        final Set<IConstraint> newConstraints = Sets.newHashSet();
        final Iterator<IConstraint> it = constraints.iterator();
        while (it.hasNext()) {
            cancel.throwIfCancelled();
            final IConstraint constraint = it.next();
            final SolveResult result;
            // property only on other constraints
            propertiesRemove(constraint);
            if ((result = component.apply(constraint).orElse(null)) != null) {
                messages.addAll(result.messages());
                dependencies.putAll(result.dependencies());
                propertiesAddAll(result.constraints());
                newConstraints.addAll(result.constraints());
                updateVars(result.unifierDiff().varSet());
                it.remove();
                stepSubject.onNext(result);
                this.progress.work(1);
                progress |= true;
            } else {
                propertiesAdd(constraint);
            }
        }
        constraints.addAll(newConstraints);
    } while (progress);
    return ImmutableSolveResult.builder().messages(messages.freeze()).dependencies(dependencies).constraints(constraints).build();
}

Example 4 with Constraints

use of mb.nabl2.constraints.Constraints in project nabl by metaborg.

the class RelationComponent method solve.

public Optional<SolveResult> solve(CCheckRelation c) {
    final ITerm left = unifier().findRecursive(c.getLeft());
    final ITerm right = unifier().findRecursive(c.getRight());
    if (!(left.isGround() && right.isGround())) {
        return Optional.empty();
    }
    return c.getRelation().match(IRelationName.Cases.of(// @formatter:off
    name -> {
        if (!isComplete.test(name)) {
            return Optional.empty();
        }
        if (relation(name).contains(left, right)) {
            return Optional.of(SolveResult.empty());
        } else {
            return Optional.empty();
        }
    }, extName -> {
        final ITerm msginfo = MessageInfo.build(c.getMessageInfo());
        return callExternal(extName, left, right, msginfo).map(csTerm -> {
            return Constraints.matchConstraintOrList().match(csTerm, unifier()).map(SolveResult::constraints).orElseThrow(() -> new IllegalArgumentException("Expected list of constraints, got " + csTerm));
        });
    }));
}

Example 5 with Constraints

use of mb.nabl2.constraints.Constraints in project nabl by metaborg.

the class SemiIncrementalMultiFileSolver method solveInter.

public ISolution solveInter(ISolution initial, Iterable<? extends ISolution> unitSolutions, IMessageInfo message, Function1<String, String> fresh, ICancel cancel, IProgress progress) throws SolverException, InterruptedException {
    final SolverConfig config = initial.config();
    // shared
    final Ref<IUnifier.Immutable> unifier = new Ref<>(initial.unifier());
    final IEsopScopeGraph.Transient<Scope, Label, Occurrence, ITerm> scopeGraph = initial.scopeGraph().melt();
    final IEsopNameResolution<Scope, Label, Occurrence> nameResolution = EsopNameResolution.of(config.getResolutionParams(), scopeGraph, (s, l) -> true);
    // constraint set properties
    final ActiveVars activeVars = new ActiveVars(unifier);
    final ActiveDeclTypes activeDeclTypes = new ActiveDeclTypes(unifier);
    final HasRelationBuildConstraints hasRelationBuildConstraints = new HasRelationBuildConstraints();
    // guards
    final Predicate1<String> isRelationComplete = r -> !hasRelationBuildConstraints.contains(r);
    // solver components
    final SolverCore core = new SolverCore(config, unifier, fresh, callExternal);
    final AstComponent astSolver = new AstComponent(core, initial.astProperties().melt());
    final BaseComponent baseSolver = new BaseComponent(core);
    final EqualityComponent equalitySolver = new EqualityComponent(core, unifier);
    final NameResolutionComponent nameResolutionSolver = new NameResolutionComponent(core, scopeGraph, nameResolution, initial.declProperties().melt());
    final NameSetsComponent nameSetSolver = new NameSetsComponent(core, scopeGraph, nameResolution);
    final RelationComponent relationSolver = new RelationComponent(core, isRelationComplete, config.getFunctions(), VariantRelations.melt(initial.relations()));
    final SetComponent setSolver = new SetComponent(core, nameSetSolver.nameSets());
    final SymbolicComponent symSolver = new SymbolicComponent(core, initial.symbolic());
    final ControlFlowComponent cfgSolver = new ControlFlowComponent(core, ImmutableFlowSpecSolution.of());
    final PolySafe polySafe = new PolySafe(activeVars, activeDeclTypes, nameResolutionSolver);
    final PolymorphismComponent polySolver = new PolymorphismComponent(core, polySafe::isGenSafe, polySafe::isInstSafe, nameResolutionSolver::getProperty);
    final ISolver component = c -> c.matchOrThrow(IConstraint.CheckedCases.<Optional<SolveResult>, InterruptedException>builder().onBase(baseSolver::solve).onEquality(equalitySolver::solve).onNameResolution(nameResolutionSolver::solve).onPoly(polySolver::solve).onRelation(relationSolver::solve).onSet(setSolver::solve).onSym(symSolver::solve).onControlflow(cfgSolver::solve).otherwise(ISolver.deny("Not allowed in this phase")));
    final FixedPointSolver solver = new FixedPointSolver(cancel, progress, component, Iterables2.from(activeVars, hasRelationBuildConstraints));
    solver.step().subscribe(r -> {
        if (!r.unifierDiff().isEmpty()) {
            try {
                nameResolutionSolver.update();
            } catch (InterruptedException ex) {
            // ignore here
            }
        }
    });
    try {
        // seed unit solutions
        final java.util.Set<IConstraint> constraints = Sets.newHashSet(initial.constraints());
        final IMessages.Transient messages = initial.messages().melt();
        for (ISolution unitSolution : unitSolutions) {
            seed(astSolver.seed(unitSolution.astProperties(), message), messages, constraints);
            seed(equalitySolver.seed(unitSolution.unifier(), message), messages, constraints);
            final NameResolutionResult nameResult = ImmutableNameResolutionResult.of(unitSolution.scopeGraph(), unitSolution.declProperties()).withResolutionCache(unitSolution.nameResolutionCache());
            seed(nameResolutionSolver.seed(nameResult, message), messages, constraints);
            seed(relationSolver.seed(unitSolution.relations(), message), messages, constraints);
            seed(symSolver.seed(unitSolution.symbolic(), message), messages, constraints);
            seed(cfgSolver.seed(unitSolution.flowSpecSolution(), message), messages, constraints);
            constraints.addAll(unitSolution.constraints());
            messages.addAll(unitSolution.messages());
        }
        // solve constraints
        nameResolutionSolver.update();
        SolveResult solveResult = solver.solve(constraints);
        messages.addAll(solveResult.messages());
        // build result
        IProperties.Immutable<TermIndex, ITerm, ITerm> astResult = astSolver.finish();
        NameResolutionResult nameResolutionResult = nameResolutionSolver.finish();
        IUnifier.Immutable unifierResult = equalitySolver.finish();
        Map<String, IVariantRelation.Immutable<ITerm>> relationResult = relationSolver.finish();
        ISymbolicConstraints symbolicConstraints = symSolver.finish();
        IFlowSpecSolution<CFGNode> fsSolution = cfgSolver.finish();
        return ImmutableSolution.of(config, astResult, nameResolutionResult.scopeGraph(), nameResolutionResult.declProperties(), relationResult, unifierResult, symbolicConstraints, fsSolution, messages.freeze(), solveResult.constraints()).withNameResolutionCache(nameResolutionResult.resolutionCache());
    } catch (RuntimeException ex) {
        throw new SolverException("Internal solver error.", ex);
    }
}