Examples with Lexer org.antlr.v4.runtime.Lexer used on opensource projects

Example 46 with Lexer

use of org.antlr.v4.runtime.Lexer in project ihmc-pub-sub by ihmcrobotics.

the class IDLGenerator method execute.

/**
 * Generate java classes from an IDL file
 *
 * @param idlFile IDL file to parse
 * @param packageName Target package (IDL Module gets added to this)
 * @param targetDirectory Directory to save the generated files in. The whole package structure is generated in this directory
 * @throws IOException
 */
public static void execute(File idlFile, String packageName, File targetDirectory, List<File> includePath) throws IOException {
    String idlFilename = idlFile.getAbsolutePath();
    Field field;
    try {
        field = TemplateManager.class.getDeclaredField("m_loaderDirectories");
        field.setAccessible(true);
        field.set(null, "us/ihmc/idl/templates");
    } catch (NoSuchFieldException | SecurityException | IllegalArgumentException | IllegalAccessException e) {
        throw new RuntimeException("API changed, fixme", e);
    }
    String onlyFileName = Util.getIDLFileNameOnly(idlFilename);
    IDLContext context = new IDLContext(onlyFileName, idlFilename, new ArrayList<>());
    context.setPackage(packageName);
    TypeCode.javapackage = context.isIsPackageEmpty() ? "" : (context.getPackage() + ".");
    // Create default @default annotation.
    AnnotationDeclaration defaultAnnotation = context.createAnnotationDeclaration("defaultValue", null);
    defaultAnnotation.addMember(new AnnotationMember("value", new PrimitiveTypeCode(TypeCode.KIND_STRING), ""));
    // Create default @Key annotation.
    AnnotationDeclaration keyann = context.createAnnotationDeclaration("Key", null);
    keyann.addMember(new AnnotationMember("value", new PrimitiveTypeCode(TypeCode.KIND_BOOLEAN), "true"));
    // Create default @Topic annotation.
    AnnotationDeclaration topicann = context.createAnnotationDeclaration("Topic", null);
    topicann.addMember(new AnnotationMember("value", new PrimitiveTypeCode(TypeCode.KIND_BOOLEAN), "true"));
    AnnotationDeclaration abstractann = context.createAnnotationDeclaration("Abstract", null);
    abstractann.addMember(new AnnotationMember("type", new PrimitiveTypeCode(TypeCode.KIND_STRING), "java.lang.Object"));
    abstractann.addMember(new AnnotationMember("impl", new PrimitiveTypeCode(TypeCode.KIND_STRING), ""));
    AnnotationDeclaration typecode = context.createAnnotationDeclaration("TypeCode", null);
    typecode.addMember(new AnnotationMember("type", new PrimitiveTypeCode(TypeCode.KIND_BOOLEAN), "INVALID_TYPE_CODE"));
    // Create template manager
    TemplateManager tmanager = new TemplateManager("FastCdrCommon:Common");
    // Create main template
    TemplateGroup maintemplates = tmanager.createTemplateGroup("main");
    maintemplates.setAttribute("ctx", context);
    if (idlFile.exists()) {
        Reader reader = createPreProcessedInputStream(idlFile, includePath);
        ANTLRInputStream input = new ANTLRInputStream(reader);
        IDLLexer lexer = new IDLLexer(input);
        lexer.setContext(context);
        CommonTokenStream tokens = new CommonTokenStream(lexer);
        // printTokenStream(tokens);
        IDLParser parser = new IDLParser(tokens);
        // Pass the filename without the extension
        parser.specification(context, tmanager, maintemplates);
        File packageDir = new File(targetDirectory, context.getPackageDir());
        if (packageDir.isDirectory() || packageDir.mkdirs()) {
            TypesGenerator gen = new TypesGenerator(tmanager, true);
            if (!gen.generate(context, packageDir.getPath() + "/", context.getPackage(), null)) {
                throw new IOException("Cannot create Java files");
            }
        } else {
            throw new IOException("Cannot create output dir " + packageDir);
        }
    } else {
        throw new IOException("The File " + idlFilename + " was not found.");
    }
}

Example 47 with Lexer

use of org.antlr.v4.runtime.Lexer in project titan.EclipsePlug-ins by eclipse.

the class ASN1Analyzer method parse.

@Override
public void parse(final IFile file, final String code) throws FileNotFoundException {
    Reader reader = null;
    if (code != null) {
        reader = new StringReader(code);
    } else if (file != null) {
        try {
            reader = new BufferedReader(new InputStreamReader(file.getContents(), file.getCharset()));
        } catch (Exception e) {
            ErrorReporter.logExceptionStackTrace("Could not get the contents of `" + file.getName() + "'", e);
            return;
        }
    } else {
        return;
    }
    final CharStream charStream = new UnbufferedCharStream(reader);
    final Asn1Lexer lexer = new Asn1Lexer(charStream);
    lexer.setTokenFactory(new TokenWithIndexAndSubTokensFactory(true));
    lexer.setActualFile(file);
    lexerListener = new ASN1Listener();
    // remove ConsoleErrorListener
    lexer.removeErrorListeners();
    lexer.addErrorListener(lexerListener);
    final ModuleLevelTokenStreamTracker tracker = new ModuleLevelTokenStreamTracker(lexer);
    tracker.discard(Asn1Lexer.WS);
    tracker.discard(Asn1Lexer.MULTILINECOMMENT);
    tracker.discard(Asn1Lexer.SINGLELINECOMMENT);
    tracker.setActualFile(file);
    final Asn1Parser parser = new Asn1Parser(tracker);
    parser.setProject(file.getProject());
    parser.setActualFile(file);
    parser.setBuildParseTree(false);
    parserListener = new ASN1Listener(parser);
    // remove ConsoleErrorListener
    parser.removeErrorListeners();
    parser.addErrorListener(parserListener);
    parser.pr_ASN1ModuleDefinition();
    actualAsn1Module = parser.getModule();
    warnings = parser.getWarnings();
    unsupportedConstructs = parser.getUnsupportedConstructs();
    try {
        reader.close();
    } catch (IOException e) {
    }
}

Example 48 with Lexer

use of org.antlr.v4.runtime.Lexer in project titan.EclipsePlug-ins by eclipse.

the class TTCN3ReferenceAnalyzer method parse.

/**
 * @return the parsed reference or null if the text can not form a reference
 */
public Reference parse(final IFile file, final String code, final boolean reportErrors, final int aLine, final int aOffset) {
    Reference reference = null;
    Reader reader = new StringReader(code);
    CharStream charStream = new UnbufferedCharStream(reader);
    Ttcn3Lexer lexer = new Ttcn3Lexer(charStream);
    lexer.setTokenFactory(new CommonTokenFactory(true));
    lexer.initRootInterval(code.length());
    lexer.removeErrorListeners();
    final CommonTokenStream tokenStream = new CommonTokenStream(lexer);
    Ttcn3Parser parser = new Ttcn3Parser(tokenStream);
    ParserUtilities.setBuildParseTree(parser);
    lexer.setActualFile(file);
    parser.setActualFile(file);
    parser.setProject(file.getProject());
    parser.setLine(aLine);
    parser.setOffset(aOffset);
    parser.removeErrorListeners();
    final Pr_UnifiedReferenceParserContext root = parser.pr_UnifiedReferenceParser();
    ParserUtilities.logParseTree(root, parser);
    reference = root.reference;
    return reference;
}

Example 49 with Lexer

use of org.antlr.v4.runtime.Lexer in project titan.EclipsePlug-ins by eclipse.

the class TTCN3ReparseUpdater method startsWithFollow.

/**
 * Checks if the first TTCN-3 lexical token in the substring, that covers the possibly changed interval of the document belongs to a given list of
 * expected tokens or not.
 *
 * @param followSet the possible tokens that can follow the element before the suspected
 *
 * @return true if the first lexical token is part of the followset, false otherwise
 */
public boolean startsWithFollow(final List<Integer> followSet) {
    if (followSet == null || followSet.isEmpty()) {
        return false;
    }
    if (code == null) {
        return false;
    }
    int line = getLineOfOffset(code, modificationStartOffset);
    int column = getPositionInLine(code, modificationStartOffset);
    String substring;
    if (code.length() <= modificationEndOffset + shift) {
        substring = code.substring(modificationStartOffset);
    } else {
        substring = code.substring(modificationStartOffset, modificationEndOffset + shift);
    }
    Reader reader = new StringReader(substring);
    CharStream charStream = new UnbufferedCharStream(reader);
    Ttcn3Lexer lexer = new Ttcn3Lexer(charStream);
    lexer.setTokenFactory(new CommonTokenFactory(true));
    lexer.setLine(line + 1);
    lexer.setCharPositionInLine(column);
    lexer.initRootInterval(modificationEndOffset - modificationStartOffset + 1);
    Token token = lexer.nextToken();
    if (token == null) {
        return false;
    }
    return followSet.contains(token.getType());
}

Example 50 with Lexer

use of org.antlr.v4.runtime.Lexer in project titan.EclipsePlug-ins by eclipse.

the class TTCN3ReparseUpdater method parse.

public int parse(final ITTCN3ReparseBase userDefined) {
    if (modificationStartOffset == modificationEndOffset + shift) {
        return 0;
    }
    // double wideparsing = System.nanoTime();
    mErrors = null;
    warnings = null;
    Iterator<TITANMarker> iterator = unsupportedConstructs.iterator();
    while (iterator.hasNext()) {
        TITANMarker marker = iterator.next();
        if ((marker.getOffset() > modificationStartOffset && marker.getOffset() <= modificationEndOffset) || (marker.getEndOffset() > modificationStartOffset && marker.getEndOffset() <= modificationEndOffset)) {
            iterator.remove();
        }
    }
    MarkerHandler.markAllOnTheFlyMarkersForRemoval(file, modificationStartOffset, modificationEndOffset + shift);
    if (code == null) {
        return Integer.MAX_VALUE;
    }
    int line = getLineOfOffset(code, modificationStartOffset);
    String substring;
    if (code.length() <= modificationEndOffset + shift) {
        substring = code.substring(modificationStartOffset);
    } else {
        substring = code.substring(modificationStartOffset, modificationEndOffset + shift);
    }
    Reader reader = new StringReader(substring);
    CharStream charStream = new UnbufferedCharStream(reader);
    Ttcn3Lexer lexer = new Ttcn3Lexer(charStream);
    lexer.setTokenFactory(new CommonTokenFactory(true));
    lexer.initRootInterval(modificationEndOffset - modificationStartOffset + 1);
    // lexer and parser listener
    TitanListener parserListener = new TitanListener();
    // remove ConsoleErrorListener
    lexer.removeErrorListeners();
    lexer.addErrorListener(parserListener);
    // 1. Previously it was UnbufferedTokenStream(lexer), but it was changed to BufferedTokenStream, because UnbufferedTokenStream seems to be unusable. It is an ANTLR 4 bug.
    // Read this: https://groups.google.com/forum/#!topic/antlr-discussion/gsAu-6d3pKU
    // pr_PatternChunk[StringBuilder builder, boolean[] uni]:
    // $builder.append($v.text); <-- exception is thrown here: java.lang.UnsupportedOperationException: interval 85..85 not in token buffer window: 86..341
    // 2. Changed from BufferedTokenStream to CommonTokenStream, otherwise tokens with "-> channel(HIDDEN)" are not filtered out in lexer.
    final CommonTokenStream tokenStream = new CommonTokenStream(lexer);
    Ttcn3Reparser parser = new Ttcn3Reparser(tokenStream);
    ParserUtilities.setBuildParseTree(parser);
    lexer.setActualFile(file);
    parser.setActualFile(file);
    parser.setProject(file.getProject());
    parser.setOffset(modificationStartOffset);
    parser.setLine(line + 1);
    // remove ConsoleErrorListener
    parser.removeErrorListeners();
    parser.addErrorListener(parserListener);
    userDefined.reparse(parser);
    mErrors = parserListener.getErrorsStored();
    warnings = parser.getWarnings();
    unsupportedConstructs.addAll(parser.getUnsupportedConstructs());
    int result = measureIntervallDamage();
    if (!parser.isErrorListEmpty()) {
        ++result;
    }
    return result;
}