Examples with IContext org.metaborg.core.context.IContext used on opensource projects

Example 1 with IContext

use of org.metaborg.core.context.IContext in project spoofax by metaborg.

the class CallStrategyPrimitive method call.

@Override
protected IStrategoTerm call(IStrategoTerm current, Strategy[] svars, IStrategoTerm[] tvars, ITermFactory factory, IContext currentContext) throws MetaborgException {
    final String languageName = Tools.asJavaString(tvars[0]);
    final String strategyName = Tools.asJavaString(tvars[1]);
    final Iterable<ILanguageComponent> compileDeps = dependencyService.compileDeps(currentContext.project());
    final Iterable<ILanguageImpl> impls = LanguageUtils.toImpls(compileDeps);
    final List<ILanguageImpl> selectedImpls = Lists.newArrayList();
    for (ILanguageImpl impl : impls) {
        if (impl.belongsTo().name().equals(languageName)) {
            selectedImpls.add(impl);
        }
    }
    if (selectedImpls.isEmpty()) {
        final String message = logger.format("Stratego strategy call of '{}' into language '{}' failed, no language implementation found", strategyName, languageName);
        throw new MetaborgException(message);
    } else if (selectedImpls.size() > 1) {
        final String message = logger.format("Stratego strategy call of '{}' into language '{}' failed, multiple language implementations found: {}", strategyName, languageName, Joiner.on(", ").join(selectedImpls));
        throw new MetaborgException(message);
    }
    final ILanguageImpl impl = selectedImpls.get(0);
    final IContext context = contextService.get(currentContext.location(), currentContext.project(), impl);
    return common.invoke(impl, context, current, strategyName);
}

Example 2 with IContext

use of org.metaborg.core.context.IContext in project spoofax by metaborg.

the class ParsePrimitive method call.

@Override
protected IStrategoTerm call(IStrategoTerm current, Strategy[] svars, IStrategoTerm[] tvars, ITermFactory factory, org.spoofax.interpreter.core.IContext strategoContext) throws MetaborgException, IOException {
    // Determine what to parse.
    if (!(current instanceof IStrategoString)) {
        throw new MetaborgException("Cannot parse, input string or file " + current + " is not a string");
    }
    final String stringOrFile = ((IStrategoString) current).stringValue();
    final String text;
    @Nullable final FileObject file;
    final IStrategoTerm isFileTerm = tvars[0];
    if (!(isFileTerm instanceof IStrategoInt)) {
        throw new MetaborgException("Cannot parse, input kind " + isFileTerm + " is not an integer");
    }
    if (((IStrategoInt) isFileTerm).intValue() == 1) {
        file = resourceService.resolve(stringOrFile);
        if (!file.exists() || !file.isFile()) {
            throw new MetaborgException("Cannot parse, input file " + file + " does not exist or is not a file");
        }
        text = sourceTextService.text(file);
    } else {
        file = null;
        text = stringOrFile;
    }
    // Determine which language to parse it with.
    final ILanguageImpl langImpl;
    final IStrategoTerm nameOrGroupIdTerm = tvars[1];
    final IStrategoTerm idTerm = tvars[2];
    final IStrategoTerm versionTerm = tvars[3];
    if (nameOrGroupIdTerm instanceof IStrategoTuple) {
        // No name, groupId, id, and version was set, auto detect language to parse with.
        if (file == null) {
            throw new MetaborgException("Cannot parse a string, no language to parse it with was given");
        }
        final IContext context = metaborgContext(strategoContext);
        if (context != null) {
            langImpl = languageIdentifierService.identify(file, context.project());
        } else {
            langImpl = languageIdentifierService.identify(file);
        }
        if (langImpl == null) {
            throw new MetaborgException("Cannot parse, language for " + file + " could not be identified");
        }
    } else if (idTerm instanceof IStrategoTuple) {
        // No id was set, name is set.
        if (!(nameOrGroupIdTerm instanceof IStrategoString)) {
            throw new MetaborgException("Cannot parse, language name " + nameOrGroupIdTerm + " is not a string");
        }
        final String name = ((IStrategoString) nameOrGroupIdTerm).stringValue();
        final ILanguage lang = languageService.getLanguage(name);
        if (lang == null) {
            throw new MetaborgException("Cannot parse, language " + nameOrGroupIdTerm + " does not exist");
        }
        langImpl = lang.activeImpl();
        if (langImpl == null) {
            throw new MetaborgException("Cannot parse, language " + lang + " has no implementation loaded");
        }
    } else {
        // A groupId, id, and version is set.
        if (!(nameOrGroupIdTerm instanceof IStrategoString)) {
            throw new MetaborgException("Cannot parse, language groupId " + nameOrGroupIdTerm + " is not a string");
        }
        final String groupId = ((IStrategoString) nameOrGroupIdTerm).stringValue();
        if (!(idTerm instanceof IStrategoString)) {
            throw new MetaborgException("Cannot parse, language id " + idTerm + " is not a string");
        }
        final String id = ((IStrategoString) idTerm).stringValue();
        if (!(versionTerm instanceof IStrategoString)) {
            throw new MetaborgException("Cannot parse, language version " + versionTerm + " is not a string");
        }
        final String versionStr = ((IStrategoString) versionTerm).stringValue();
        final LanguageVersion version = LanguageVersion.parse(versionStr);
        final LanguageIdentifier langId = new LanguageIdentifier(groupId, id, version);
        langImpl = languageService.getImpl(langId);
        if (langImpl == null) {
            throw new MetaborgException("Cannot parse, language implementation " + langId + " does not exist");
        }
    }
    // Parse the text.
    final ISpoofaxInputUnit input;
    if (file != null) {
        @Nullable ILanguageImpl dialect;
        try {
            final IdentifiedDialect identifierDialect = dialectIdentifier.identify(file);
            if (identifierDialect != null) {
                dialect = identifierDialect.dialect;
            } else {
                dialect = null;
            }
        } catch (MetaborgException | MetaborgRuntimeException e) {
            // Ignore
            dialect = null;
        }
        input = unitService.inputUnit(file, text, langImpl, dialect);
    } else {
        input = unitService.inputUnit(text, langImpl, null);
    }
    final ISpoofaxParseUnit result = syntaxService.parse(input);
    if (result.valid() && result.success()) {
        return result.ast();
    } else {
        return null;
    }
}

Example 3 with IContext

use of org.metaborg.core.context.IContext in project spoofax by metaborg.

the class LegacyForeignCallPrimitive method call.

@Override
protected IStrategoTerm call(IStrategoTerm current, Strategy[] svars, IStrategoTerm[] tvars, ITermFactory factory, IContext currentContext) throws MetaborgException {
    final String languageName = Tools.asJavaString(tvars[0]);
    final String strategyName = Tools.asJavaString(tvars[1]);
    // GTODO: require language identifier instead of language name
    final ILanguage language = languageService.getLanguage(languageName);
    if (language == null) {
        final String message = String.format("Stratego strategy call of '%s' into language %s failed, language could not be found", strategyName, languageName);
        throw new MetaborgException(message);
    }
    final ILanguageImpl activeImpl = language.activeImpl();
    if (activeImpl == null) {
        final String message = String.format("Stratego strategy call of '%s' into language %s failed, no active language implementation could be found", strategyName, languageName);
        throw new MetaborgException(message);
    }
    try {
        final IProject project = projectService.get(currentContext.location());
        IContext context = contextService.get(currentContext.location(), project, activeImpl);
        return common.invoke(activeImpl, context, current, strategyName);
    } catch (MetaborgException e) {
        final String message = String.format("Stratego strategy call of '%s' into language %s failed unexpectedly", strategyName, languageName);
        throw new MetaborgException(message, e);
    }
}

Example 4 with IContext

use of org.metaborg.core.context.IContext in project spoofax by metaborg.

the class HoverService method hover.

@Override
public Hover hover(int offset, ISpoofaxParseUnit result) throws MetaborgException {
    if (!result.valid()) {
        return null;
    }
    final FileObject source = result.source();
    final IProject project = projectService.get(source);
    final ILanguageImpl langImpl = result.input().langImpl();
    @Nullable IContext context;
    if (project == null) {
        context = null;
    } else {
        try {
            context = contextService.get(source, project, langImpl);
        } catch (ContextException | MetaborgRuntimeException e) {
            // Failed to get a context, ignore and use the source file to get a stratego runtime later.
            context = null;
        }
    }
    final FacetContribution<HoverFacet> facetContrib = facet(langImpl);
    final HoverFacet facet = facetContrib.facet;
    final ILanguageComponent contributor = facetContrib.contributor;
    final String strategy = facet.strategyName;
    try {
        final ITermFactory termFactory = termFactoryService.get(contributor, project, true);
        final HybridInterpreter interpreter;
        if (context == null) {
            interpreter = strategoRuntimeService.runtime(contributor, source, true);
        } else {
            interpreter = strategoRuntimeService.runtime(contributor, context, true);
        }
        final Iterable<IStrategoTerm> inRegion = tracingService.fragments(result, new SourceRegion(offset));
        final TermWithRegion tuple = common.outputs(termFactory, interpreter, context.location(), source, result.ast(), inRegion, strategy);
        return hover(tuple);
    } catch (MetaborgException e) {
        throw new MetaborgException("Getting hover tooltip information failed unexpectedly", e);
    }
}

Example 5 with IContext

use of org.metaborg.core.context.IContext in project spoofax by metaborg.

the class ResolverService method resolve.

@Override
public Resolution resolve(int offset, ISpoofaxAnalyzeUnit result) throws MetaborgException {
    if (!result.valid() || !result.hasAst()) {
        return null;
    }
    final FileObject source = result.source();
    final IContext context = result.context();
    final IProject project = context.project();
    final ILanguageImpl language = context.language();
    final FacetContribution<ResolverFacet> facetContrib = facet(language);
    final ResolverFacet facet = facetContrib.facet;
    final String strategy = facet.strategyName;
    try {
        final ITermFactory termFactory = termFactoryService.get(facetContrib.contributor, project, true);
        final HybridInterpreter interpreter = strategoRuntimeService.runtime(facetContrib.contributor, context, true);
        final Iterable<IStrategoTerm> inRegion = tracingService.fragments(result, new SourceRegion(offset));
        final TermWithRegion tuple;
        try (IClosableLock lock = context.read()) {
            tuple = common.outputs(termFactory, interpreter, source, source, result.ast(), inRegion, strategy);
        }
        return resolve(tuple);
    } catch (MetaborgException e) {
        throw new MetaborgException("Reference resolution failed", e);
    }
}