Examples with ITermVar mb.nabl2.terms.ITermVar used on opensource projects

Example 1 with ITermVar

use of mb.nabl2.terms.ITermVar 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 ITermVar

use of mb.nabl2.terms.ITermVar in project nabl by metaborg.

the class PersistentUnifier method findRep.

protected static ITermVar findRep(ITermVar var, Map.Transient<ITermVar, ITermVar> reps) {
    ITermVar rep = reps.get(var);
    if (rep == null) {
        return var;
    } else {
        rep = findRep(rep, reps);
        reps.put(var, rep);
        return rep;
    }
}

Example 3 with ITermVar

use of mb.nabl2.terms.ITermVar in project nabl by metaborg.

the class PersistentUnifier method size.

private TermSize size(final ITermVar var, final Set<ITermVar> stack, final java.util.Map<ITermVar, TermSize> visited) {
    final ITermVar rep = findRep(var);
    final TermSize size;
    if (!visited.containsKey(rep)) {
        stack.add(rep);
        visited.put(rep, TermSize.ZERO);
        final ITerm term = terms().get(rep);
        size = term != null ? size(term, stack, visited) : TermSize.ZERO;
        visited.put(rep, size);
        stack.remove(rep);
        return size;
    } else if (stack.contains(rep)) {
        size = TermSize.INF;
    } else {
        size = visited.get(rep);
    }
    return size;
}

Example 4 with ITermVar

use of mb.nabl2.terms.ITermVar in project nabl by metaborg.

the class PersistentUnifier method isCyclic.

private boolean isCyclic(final ITermVar var, final Set<ITermVar> stack, final java.util.Map<ITermVar, Boolean> visited) {
    final boolean cyclic;
    final ITermVar rep = findRep(var);
    if (!visited.containsKey(rep)) {
        stack.add(rep);
        visited.put(rep, false);
        final ITerm term = terms().get(rep);
        cyclic = term != null ? isCyclic(term.getVars().elementSet(), stack, visited) : false;
        visited.put(rep, cyclic);
        stack.remove(rep);
    } else if (stack.contains(rep)) {
        cyclic = true;
    } else {
        cyclic = visited.get(rep);
    }
    return cyclic;
}

Example 5 with ITermVar

use of mb.nabl2.terms.ITermVar in project nabl by metaborg.

the class PersistentUnifier method equalVars.

private boolean equalVars(final ITermVar left, final ITermVar right, final Set<Set2<ITermVar>> stack, final java.util.Map<Set2<ITermVar>, Boolean> visited) {
    final ITermVar leftRep = findRep(left);
    final ITermVar rightRep = findRep(right);
    if (leftRep.equals(rightRep)) {
        return true;
    }
    final Set2<ITermVar> pair = Set2.of(leftRep, rightRep);
    final boolean equal;
    if (!visited.containsKey(pair)) {
        stack.add(pair);
        visited.put(pair, false);
        final ITerm leftTerm = terms().get(leftRep);
        final ITerm rightTerm = terms().get(rightRep);
        equal = (leftTerm != null && rightTerm != null) ? equalTerms(leftTerm, rightTerm, stack, visited) : false;
        visited.put(pair, equal);
        stack.remove(pair);
    } else if (stack.contains(pair)) {
        equal = false;
    } else {
        equal = visited.get(pair);
    }
    return equal;
}