Examples with ClassReader org.apache.xbean.asm9.ClassReader used on opensource projects

Example 6 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project component-runtime by Talend.

the class RepositoryModelBuilderTest method createChainPlugin.

private File createChainPlugin(final File dir, final String plugin) {
    final File target = new File(dir, plugin);
    try (final JarOutputStream outputStream = new JarOutputStream(new FileOutputStream(target))) {
        final String packageName = toPackage(target.getParentFile().getParentFile().getName()).replace(".", "/");
        final String sourcePackage = "org/talend/test";
        final String fromPack = sourcePackage.replace('/', '.');
        final String toPack = packageName.replace('.', '/');
        final File root = new File(jarLocation(getClass()), sourcePackage);
        ofNullable(root.listFiles()).map(Stream::of).orElseGet(Stream::empty).filter(c -> c.getName().endsWith(".class")).forEach(clazz -> {
            try (final InputStream is = new FileInputStream(clazz)) {
                final ClassReader reader = new ClassReader(is);
                final ClassWriter writer = new ClassWriter(COMPUTE_FRAMES);
                reader.accept(new ClassRemapper(writer, new Remapper() {

                    @Override
                    public String map(final String key) {
                        return key.replace(sourcePackage, toPack).replace(fromPack, packageName);
                    }
                }), EXPAND_FRAMES);
                outputStream.putNextEntry(new JarEntry(toPack + '/' + clazz.getName()));
                outputStream.write(writer.toByteArray());
            } catch (final IOException e) {
                fail(e.getMessage());
            }
        });
    } catch (final IOException e) {
        throw new IllegalStateException(e);
    }
    return target;
}

Example 7 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project tomee by apache.

the class PersistenceContextAnnFactory method addAnnotations.

public void addAnnotations(final Class c) throws OpenEJBException {
    if (!useAsm) {
        return;
    }
    if (processed.contains(c.getName())) {
        return;
    }
    try {
        final URL u = c.getResource("/" + c.getName().replace('.', '/') + ".class");
        final ClassReader r = new ClassReader(IO.read(u));
        r.accept(new PersistenceContextReader(contexts), ClassReader.SKIP_DEBUG);
    } catch (final IOException e) {
        throw new OpenEJBException("Unable to read class " + c.getName());
    }
    processed.add(c.getName());
}

Example 8 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project tomee by apache.

the class TempClassLoader method isAnnotationClass.

/**
 * Fast-parse the given class bytecode to determine if it is an
 * annotation class.
 */
private static boolean isAnnotationClass(final byte[] bytes) {
    final IsAnnotationVisitor isAnnotationVisitor = new IsAnnotationVisitor();
    final ClassReader classReader = new ClassReader(bytes);
    classReader.accept(isAnnotationVisitor, ClassReader.SKIP_DEBUG);
    return isAnnotationVisitor.isAnnotation;
}

Example 9 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project tomee by apache.

the class ValidationGenerator method generate.

public byte[] generate() throws ProxyGenerationException {
    generatedMethods.clear();
    final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    final String generatedClassName = getName().replace('.', '/');
    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER, generatedClassName, null, "java/lang/Object", null);
    {
        // public constructor
        final MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    generateMethods(cw);
    /**
     * Read all parent classes and copy the public methods we need
     * into our new class.
     */
    Class current = clazz;
    while (current != null && !current.equals(Object.class)) {
        try {
            final ClassReader classReader = new ClassReader(DynamicSubclass.readClassFile(current));
            classReader.accept(new CopyMethodAnnotations(), ClassReader.SKIP_CODE);
        } catch (final IOException e) {
            throw new ProxyGenerationException(e);
        }
        current = current.getSuperclass();
    }
    return cw.toByteArray();
}

Example 10 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project tomee by apache.

the class AnnotationFinder method readClassDef.

private void readClassDef(String className, final ClassVisitor visitor) {
    classes++;
    if (!className.endsWith(".class")) {
        className = className.replace('.', '/') + ".class";
    }
    try {
        final URL resource = classLoader.getResource(className);
        if (resource != null) {
            InputStream in = resource.openStream();
            in = new BufferedInputStream(in);
            try {
                final ClassReader classReader = new ClassReader(in);
                classReader.accept(visitor, ASM_FLAGS);
            } finally {
                in.close();
            }
        } else {
            new Exception("Could not load " + className).printStackTrace();
        }
    } catch (final IOException e) {
        e.printStackTrace();
    }
}