Examples with JavaClass org.apache.bcel.classfile.JavaClass used on opensource projects

Example 81 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project jop by jop-devel.

the class ClassWriter method write.

public void write(String writeDir) throws IOException {
    AppInfo appInfo = AppInfo.getSingleton();
    if (logger.isInfoEnabled()) {
        logger.info("Start writing classes to '" + writeDir + "' ..");
    }
    File classDir = new File(writeDir);
    if (classDir.exists()) {
        if (classDir.isFile()) {
            throw new IOException("Output directory '" + classDir + "' is a file.");
        }
    } else if (!classDir.mkdirs()) {
        throw new IOException("Could not create output directory " + classDir);
    }
    for (ClassInfo cls : appInfo.getClassInfos()) {
        if (logger.isDebugEnabled()) {
            logger.debug("Writing class: " + cls.getClassName());
        }
        JavaClass jc = cls.compile();
        String filename = classDir + File.separator + cls.getClassName().replace(".", File.separator) + ".class";
        File file = new File(filename);
        String parent = file.getParent();
        if (parent != null) {
            File pDir = new File(parent);
            // noinspection ResultOfMethodCallIgnored
            pDir.mkdirs();
        }
        BufferedOutputStream out = new BufferedOutputStream(new FileOutputStream(file));
        DataOutputStream stream = new DataOutputStream(out);
        jc.dump(stream);
        stream.close();
    }
    if (logger.isInfoEnabled()) {
        logger.info(appInfo.getClassInfos().size() + " classes written.");
    }
}

Example 82 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project tycho by eclipse.

the class ExecutionEnvironmentTest method testCompilerSourceTargetConfigurationViaManifest.

@Test
public void testCompilerSourceTargetConfigurationViaManifest() throws Exception {
    Verifier verifier = getVerifier("TYCHO476", false);
    verifier.executeGoal("compile");
    // compile only succeeds with source level 1.6 which
    // is configured indirectly via Bundle-RequiredExecutionEnvironment: JavaSE-1.6
    verifier.verifyErrorFreeLog();
    File classFile = new File(verifier.getBasedir(), "target/classes/TestRunnable.class");
    Assert.assertTrue(classFile.canRead());
    JavaClass javaClass = new ClassParser(classFile.getAbsolutePath()).parse();
    // bytecode major level 50 == target 1.6
    Assert.assertEquals(50, javaClass.getMajor());
}

Example 83 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project contribution by checkstyle.

the class ClassFileSetCheck method visitSet.

/**
 * @see com.puppycrawl.tools.checkstyle.bcel.IObjectSetVisitor
 */
public void visitSet(Set aSet) {
    // register the JavaClasses in the Repository
    Repository.clearCache();
    Iterator it = aSet.iterator();
    while (it.hasNext()) {
        final JavaClass javaClass = (JavaClass) it.next();
        Repository.addClass(javaClass);
    }
    // visit the visitors
    it = getObjectSetVisitors().iterator();
    while (it.hasNext()) {
        final IObjectSetVisitor visitor = (IObjectSetVisitor) it.next();
        visitor.visitSet(aSet);
    }
}

Example 84 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project contribution by checkstyle.

the class ClassFileSetCheck method process.

/**
 * @see com.puppycrawl.tools.checkstyle.api.FileSetCheck
 */
public void process(File[] aFiles) {
    registerVisitors();
    // get all the JavaClasses in the files
    final Set javaClasses = extractJavaClasses(aFiles);
    visitSet(javaClasses);
    // walk each Java class parse tree
    final JavaClassWalker walker = new JavaClassWalker();
    walker.setVisitor(getTreeVisitor());
    final Iterator it = javaClasses.iterator();
    while (it.hasNext()) {
        final JavaClass clazz = (JavaClass) it.next();
        visitObject(clazz);
        walker.walk(clazz);
        leaveObject(clazz);
    }
    leaveSet(javaClasses);
    fireErrors();
}

Example 85 with JavaClass

use of org.apache.bcel.classfile.JavaClass in project contribution by checkstyle.

the class ClassFileSetCheck method extractJavaClasses.

/**
 * Extracts the JavaClasses from .class, .zip, and .jar files.
 * @param aFile the file to extract from.
 * @return the set of JavaClasses from aFile.
 * @throws IOException if there is an error.
 */
private Set extractJavaClasses(File aFile) throws IOException {
    final Set result = new HashSet();
    final String fileName = aFile.getPath();
    if (fileName.endsWith(".jar") || fileName.endsWith(".zip")) {
        final ZipFile zipFile = new ZipFile(fileName);
        final Enumeration entries = zipFile.entries();
        while (entries.hasMoreElements()) {
            final ZipEntry entry = (ZipEntry) entries.nextElement();
            final String entryName = entry.getName();
            if (entryName.endsWith(".class")) {
                final InputStream in = zipFile.getInputStream(entry);
                final JavaClass javaClass = new ClassParser(in, entryName).parse();
                result.add(javaClass);
            }
        }
    } else {
        final JavaClass javaClass = new ClassParser(fileName).parse();
        result.add(javaClass);
    }
    return result;
}