Examples with ParseContrib org.metaborg.spoofax.core.unit.ParseContrib used on opensource projects

Example 1 with ParseContrib

use of org.metaborg.spoofax.core.unit.ParseContrib in project spoofax by metaborg.

the class JSGLRParseService method parse.

@Override
public ISpoofaxParseUnit parse(ISpoofaxInputUnit input, IProgress progress, ICancel cancel) throws ParseException {
    final FileObject source = input.source();
    final ILanguageImpl langImpl;
    final ILanguageImpl base;
    if (input.dialect() != null) {
        langImpl = input.dialect();
        base = input.langImpl();
    } else {
        langImpl = input.langImpl();
        base = null;
    }
    final String text = input.text();
    final ITermFactory termFactory = termFactoryService.get(langImpl, null, false);
    final IParserConfig config;
    JSGLRParserConfiguration parserConfig = input.config();
    if (parserConfig == null) {
        parserConfig = defaultParserConfig;
    }
    if (parserConfig.completion) {
        config = getCompletionParserConfig(langImpl, input);
    } else {
        config = getParserConfig(langImpl, input);
    }
    try {
        logger.trace("Parsing {}", source);
        JSGLRVersion version = jsglrVersion(input);
        final JSGLRI<?> parser;
        boolean dataDependentParsing = false;
        for (ILanguageComponent component : langImpl.components()) {
            if (component.config().dataDependent()) {
                dataDependentParsing = true;
            }
        }
        if (version == JSGLRVersion.v2) {
            if (dataDependentParsing) {
                parser = new JSGLR2I(config, termFactory, langImpl, null, source, text, true);
            } else {
                parser = new JSGLR2I(config, termFactory, langImpl, null, source, text, false);
            }
        } else {
            if (base != null) {
                parser = new JSGLR1I(config, termFactory, base, langImpl, source, text);
            } else {
                parser = new JSGLR1I(config, termFactory, langImpl, null, source, text);
            }
        }
        final ParseContrib contrib = parser.parse(parserConfig);
        if (version == JSGLRVersion.v2) {
            if (contrib.valid)
                logger.info("Valid JSGLR2 parse");
            else
                logger.info("Invalid JSGLR2 parse");
        }
        final ISpoofaxParseUnit unit = unitService.parseUnit(input, contrib);
        return unit;
    } catch (IOException | InvalidParseTableException | ParseTableReadException e) {
        throw new ParseException(input, e);
    }
}

Example 2 with ParseContrib

use of org.metaborg.spoofax.core.unit.ParseContrib in project spoofax by metaborg.

the class JSGLR1I method parse.

public ParseContrib parse(@Nullable JSGLRParserConfiguration parserConfig) throws IOException {
    if (parserConfig == null) {
        parserConfig = new JSGLRParserConfiguration();
    }
    final String fileName = resource != null ? resource.getName().getURI() : null;
    final JSGLRParseErrorHandler errorHandler = new JSGLRParseErrorHandler(this, resource, getParseTable(config.getParseTableProvider()).hasRecovers());
    final Timer timer = new Timer(true);
    SGLRParseResult result;
    try {
        // should throw a fatal, or return a non-null result
        result = actuallyParse(input, fileName, parserConfig);
        assert result != null;
    } catch (SGLRException | InterruptedException e) {
        result = null;
        errorHandler.setRecoveryFailed(parserConfig.recovery);
        errorHandler.processFatalException(new NullTokenizer(input, fileName), e);
    }
    final long duration = timer.stop();
    final IStrategoTerm ast;
    if (result != null) {
        // No fatals occurred, so either parsing succeeded or recovery succeeded
        ast = (IStrategoTerm) result.output;
        if (ast == null) {
            // so we have nothing to do
            assert parser.getTreeBuilder() instanceof NullTreeBuilder;
        } else {
            // in case recovery was required, collect the recoverable errors
            errorHandler.setRecoveryFailed(false);
            errorHandler.gatherNonFatalErrors(ast);
            if (resource != null) {
                SourceAttachment.putSource(ast, resource);
            }
        }
    } else {
        ast = null;
    }
    final boolean hasAst = ast != null;
    final Iterable<IMessage> messages = errorHandler.messages();
    final boolean hasErrors = MessageUtils.containsSeverity(messages, MessageSeverity.ERROR);
    return new ParseContrib(hasAst, hasAst && !hasErrors, ast, messages, duration);
}

Example 3 with ParseContrib

use of org.metaborg.spoofax.core.unit.ParseContrib in project spoofax by metaborg.

the class JSGLR2I method parse.

public ParseContrib parse(@Nullable JSGLRParserConfiguration parserConfig) throws IOException {
    if (parserConfig == null) {
        parserConfig = new JSGLRParserConfiguration();
    }
    final String fileName = resource != null ? resource.getName().getURI() : null;
    String startSymbol = getOrDefaultStartSymbol(parserConfig);
    final Timer timer = new Timer(true);
    final IStrategoTerm ast = parser.parse(input, fileName, startSymbol);
    final long duration = timer.stop();
    final boolean hasAst = ast != null;
    final boolean hasErrors = ast == null;
    final Iterable<IMessage> messages;
    if (hasErrors)
        messages = Collections.singletonList(MessageFactory.newParseErrorAtTop(resource, "Invalid syntax", null));
    else
        messages = Collections.emptyList();
    return new ParseContrib(hasAst, hasAst && !hasErrors, ast, messages, duration);
}