Examples with ILanguage org.metaborg.core.language.ILanguage used on opensource projects

Example 1 with ILanguage

use of org.metaborg.core.language.ILanguage in project spoofax by metaborg.

the class DialectIdentifier method identify.

@Override
public IdentifiedDialect identify(FileObject resource) throws MetaborgException {
    final ILanguage strategoLanguage = languageService.getLanguage(SpoofaxConstants.LANG_STRATEGO_NAME);
    if (strategoLanguage == null) {
        final String message = logger.format("Could not find Stratego language, Stratego dialects cannot be identified for resource: {}", resource);
        throw new MetaborgRuntimeException(message);
    }
    // GTODO: use identifier service instead, but that introduces a cyclic dependency. Could use a provider.
    final ILanguageImpl strategoImpl = strategoLanguage.activeImpl();
    if (strategoImpl == null) {
        return null;
    }
    // HACK: assuming single identification facet
    final IdentificationFacet facet = strategoImpl.facet(IdentificationFacet.class);
    if (facet == null || !facet.identify(resource)) {
        return null;
    }
    try {
        final FileObject metaResource = metaResource(resource);
        if (metaResource == null) {
            return null;
        }
        final TermReader termReader = new TermReader(termFactoryService.getGeneric());
        final IStrategoTerm term = termReader.parseFromStream(metaResource.getContent().getInputStream());
        final String name = getSyntaxName(term.getSubterm(0));
        if (name == null) {
            return null;
        }
        final ILanguageImpl dialect = dialectService.getDialect(name);
        if (dialect == null) {
            final String message = String.format("Resource %s requires dialect %s, but that dialect does not exist", resource, name);
            throw new MetaborgException(message);
        }
        final ILanguageImpl base = dialectService.getBase(dialect);
        return new IdentifiedDialect(dialect, base);
    } catch (ParseError | IOException e) {
        throw new MetaborgException("Unable to open or parse .meta file", e);
    }
}

Example 2 with ILanguage

use of org.metaborg.core.language.ILanguage in project spoofax by metaborg.

the class DialectProcessor method update.

@Override
public void update(FileObject location, Iterable<ResourceChange> changes) {
    final int numChanges = Iterables.size(changes);
    if (numChanges == 0) {
        return;
    }
    final ILanguage strategoLanguage = languageService.getLanguage(SpoofaxConstants.LANG_STRATEGO_NAME);
    if (strategoLanguage == null) {
        logger.debug("Could not find Stratego language, Stratego dialects cannot be updated");
        return;
    }
    final ILanguageImpl strategoImpl = strategoLanguage.activeImpl();
    if (strategoImpl == null) {
        logger.debug("Could not find active Stratego language implementation, " + "Stratego dialects cannot be updated");
        return;
    }
    logger.debug("Processing dialect updates for {}", location);
    // HACK: assuming single syntax facet
    final SyntaxFacet baseFacet = strategoImpl.facet(SyntaxFacet.class);
    if (baseFacet == null) {
        logger.debug("Active Stratego language implementation has no syntax facet, " + "Stratego dialects cannot be updated");
        return;
    }
    for (ResourceChange change : changes) {
        final FileObject resource = change.resource;
        try {
            if (!FileSelectorUtils.include(selector, resource, location)) {
                continue;
            }
        } catch (FileSystemException e) {
            continue;
        }
        final String fileName = FilenameUtils.getBaseName(resource.getName().getBaseName());
        final SyntaxFacet newFacet = new SyntaxFacet(resource, baseFacet.completionParseTable, baseFacet.startSymbols, baseFacet.singleLineCommentPrefixes, baseFacet.multiLineCommentCharacters, baseFacet.fenceCharacters);
        final ResourceChangeKind changeKind = change.kind;
        try {
            switch(changeKind) {
                case Create:
                    add(fileName, resource, strategoImpl, newFacet);
                    break;
                case Delete:
                    remove(fileName, resource);
                    break;
                case Modify:
                    update(fileName, resource, newFacet);
                    break;
                case Rename:
                    if (change.from != null) {
                        remove(fileName, resource);
                    }
                    if (change.to != null) {
                        add(fileName, resource, strategoImpl, newFacet);
                    }
                    break;
                case Copy:
                    if (change.to != null) {
                        add(fileName, resource, strategoImpl, newFacet);
                    }
                    break;
                default:
                    logger.error("Unhandled resource change kind {}", changeKind);
                    break;
            }
        } catch (MetaborgRuntimeException e) {
            logger.error("Failed to update dialect", e);
        }
    }
}

Example 3 with ILanguage

use of org.metaborg.core.language.ILanguage in project spoofax by metaborg.

the class LanguageIncludeFilesPrimitive method call.

@Override
protected IStrategoTerm call(IStrategoTerm current, Strategy[] svars, IStrategoTerm[] tvars, ITermFactory factory, IContext context) throws MetaborgException {
    if (!Tools.isTermString(tvars[0])) {
        return null;
    }
    final IProject project = projectService.get(context.location());
    if (project == null) {
        return factory.makeList();
    }
    // GTODO: require language identifier instead of language name
    final String languageName = Tools.asJavaString(tvars[0]);
    final ILanguage language = languageService.getLanguage(languageName);
    if (language == null) {
        final String message = String.format("Getting include files for %s failed, language could not be found", languageName);
        throw new MetaborgException(message);
    }
    final ILanguageImpl impl = language.activeImpl();
    if (impl == null) {
        final String message = String.format("Getting include files for %s failed, no active language implementation could be found", languageName);
        throw new MetaborgException(message);
    }
    final Iterable<IdentifiedResource> includeFiles = languagePathService.includeFiles(project, impl);
    final List<IStrategoTerm> terms = Lists.newArrayList();
    for (IdentifiedResource includeFile : includeFiles) {
        terms.add(factory.makeString(includeFile.resource.getName().getURI()));
    }
    return factory.makeList(terms);
}

Example 4 with ILanguage

use of org.metaborg.core.language.ILanguage 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 5 with ILanguage

use of org.metaborg.core.language.ILanguage in project spoofax by metaborg.

the class CLIUtils method getLanguage.

/**
 * Get a already loaded language by language name
 */
public ILanguageImpl getLanguage(String languageName) throws MetaborgException {
    final ILanguage lang = spoofax.languageService.getLanguage(languageName);
    if (lang == null) {
        throw new MetaborgException("Cannot find language " + languageName);
    }
    final ILanguageImpl langImpl = lang.activeImpl();
    if (langImpl == null) {
        throw new MetaborgException("Language " + languageName + " has no active implementation");
    }
    return langImpl;
}