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Example 1 with ClassWriter

use of org.apache.xbean.asm6.ClassWriter in project jodd by oblac.

the class ProxettaBuilder method process.

/**
	 * Reads the target and creates destination class.
	 */
protected void process() {
    if (targetInputStream == null) {
        throw new ProxettaException("Target missing");
    }
    // create class reader
    ClassReader classReader;
    try {
        classReader = new ClassReader(targetInputStream);
    } catch (IOException ioex) {
        throw new ProxettaException("Error reading class input stream", ioex);
    }
    // reads information
    TargetClassInfoReader targetClassInfoReader = new TargetClassInfoReader(proxetta.getClassLoader());
    classReader.accept(targetClassInfoReader, 0);
    this.destClassWriter = new ClassWriter(ClassWriter.COMPUTE_MAXS | ClassWriter.COMPUTE_FRAMES);
    // create proxy
    if (log.isDebugEnabled()) {
        log.debug("processing: " + classReader.getClassName());
    }
    WorkData wd = process(classReader, targetClassInfoReader);
    // store important data
    proxyApplied = wd.proxyApplied;
    proxyClassName = wd.thisReference.replace('/', '.');
}
Also used : TargetClassInfoReader(jodd.proxetta.asm.TargetClassInfoReader) ClassReader(jodd.asm5.ClassReader) IOException(java.io.IOException) WorkData(jodd.proxetta.asm.WorkData) ClassWriter(jodd.asm5.ClassWriter)

Example 2 with ClassWriter

use of org.apache.xbean.asm6.ClassWriter in project tomee by apache.

the class DynamicSubclass method generateBytes.

private static byte[] generateBytes(final Class<?> classToProxy) throws ProxyGenerationException {
    final Map<String, MethodVisitor> visitors = new HashMap<>();
    final ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    final String proxyClassFileName = getSubclassName(classToProxy).replace('.', '/');
    final String classFileName = classToProxy.getName().replace('.', '/');
    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER, proxyClassFileName, null, classFileName, null);
    cw.visitSource(classFileName + ".java", null);
    // push InvocationHandler field
    cw.visitField(ACC_FINAL + ACC_PRIVATE, "this$handler", "Ljava/lang/reflect/InvocationHandler;", null, null).visitEnd();
    for (final Constructor<?> constructor : classToProxy.getConstructors()) {
        if (!Modifier.isPublic(constructor.getModifiers())) {
            continue;
        }
        final MethodVisitor mv = visitConstructor(cw, proxyClassFileName, classFileName, constructor);
        visitors.put("<init>" + Type.getConstructorDescriptor(constructor), mv);
    }
    final Map<String, List<Method>> methodMap = new HashMap<>();
    getNonPrivateMethods(classToProxy, methodMap);
    // Iterate over the public methods
    for (final Map.Entry<String, List<Method>> entry : methodMap.entrySet()) {
        for (final Method method : entry.getValue()) {
            if (Modifier.isAbstract(method.getModifiers())) {
                final MethodVisitor visitor = LocalBeanProxyFactory.visit(cw, method, proxyClassFileName, "this$handler");
                visitors.put(method.getName() + Type.getMethodDescriptor(method), visitor);
            }
        }
    }
    copyClassAnnotations(classToProxy, cw);
    copyMethodAnnotations(classToProxy, visitors);
    // This should never be reached, but just in case
    for (final MethodVisitor visitor : visitors.values()) {
        visitor.visitEnd();
    }
    return cw.toByteArray();
}
Also used : HashMap(java.util.HashMap) ArrayList(java.util.ArrayList) Arrays.asList(java.util.Arrays.asList) List(java.util.List) Method(java.lang.reflect.Method) HashMap(java.util.HashMap) Map(java.util.Map) ClassWriter(org.apache.xbean.asm5.ClassWriter) MethodVisitor(org.apache.xbean.asm5.MethodVisitor)

Example 3 with ClassWriter

use of org.apache.xbean.asm6.ClassWriter in project component-runtime by Talend.

the class PluginGenerator method createChainPlugin.

public 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;
}
Also used : Assertions.fail(org.junit.jupiter.api.Assertions.fail) COMPUTE_FRAMES(org.apache.xbean.asm6.ClassWriter.COMPUTE_FRAMES) Optional.ofNullable(java.util.Optional.ofNullable) FileOutputStream(java.io.FileOutputStream) IOException(java.io.IOException) FileInputStream(java.io.FileInputStream) ClassReader(org.apache.xbean.asm6.ClassReader) File(java.io.File) JarEntry(java.util.jar.JarEntry) Stream(java.util.stream.Stream) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) JarLocation.jarLocation(org.apache.ziplock.JarLocation.jarLocation) ClassWriter(org.apache.xbean.asm6.ClassWriter) EXPAND_FRAMES(org.apache.xbean.asm6.ClassReader.EXPAND_FRAMES) JarOutputStream(java.util.jar.JarOutputStream) Remapper(org.apache.xbean.asm6.commons.Remapper) InputStream(java.io.InputStream) FileInputStream(java.io.FileInputStream) InputStream(java.io.InputStream) JarOutputStream(java.util.jar.JarOutputStream) IOException(java.io.IOException) JarEntry(java.util.jar.JarEntry) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) FileInputStream(java.io.FileInputStream) ClassWriter(org.apache.xbean.asm6.ClassWriter) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) Remapper(org.apache.xbean.asm6.commons.Remapper) FileOutputStream(java.io.FileOutputStream) ClassReader(org.apache.xbean.asm6.ClassReader) FileOutputStream(java.io.FileOutputStream) FileInputStream(java.io.FileInputStream) Stream(java.util.stream.Stream) JarOutputStream(java.util.jar.JarOutputStream) InputStream(java.io.InputStream) File(java.io.File)

Example 4 with ClassWriter

use of org.apache.xbean.asm6.ClassWriter in project component-runtime by Talend.

the class PluginGenerator method createChainPlugin.

public 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;
}
Also used : Assertions.fail(org.junit.jupiter.api.Assertions.fail) Action(org.talend.sdk.component.api.service.Action) ClassReader(org.apache.xbean.asm6.ClassReader) V1_8(org.apache.xbean.asm6.Opcodes.V1_8) Type(org.apache.xbean.asm6.Type) JarEntry(java.util.jar.JarEntry) Processor(org.talend.sdk.component.api.processor.Processor) ACC_PUBLIC(org.apache.xbean.asm6.Opcodes.ACC_PUBLIC) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) ElementListener(org.talend.sdk.component.api.processor.ElementListener) ALOAD(org.apache.xbean.asm6.Opcodes.ALOAD) EXPAND_FRAMES(org.apache.xbean.asm6.ClassReader.EXPAND_FRAMES) ACC_SUPER(org.apache.xbean.asm6.Opcodes.ACC_SUPER) JarOutputStream(java.util.jar.JarOutputStream) ZipEntry(java.util.zip.ZipEntry) Remapper(org.apache.xbean.asm6.commons.Remapper) COMPUTE_FRAMES(org.apache.xbean.asm6.ClassWriter.COMPUTE_FRAMES) INVOKESPECIAL(org.apache.xbean.asm6.Opcodes.INVOKESPECIAL) AnnotationVisitor(org.apache.xbean.asm6.AnnotationVisitor) Optional.ofNullable(java.util.Optional.ofNullable) NEW(org.apache.xbean.asm6.Opcodes.NEW) FileOutputStream(java.io.FileOutputStream) IOException(java.io.IOException) FileInputStream(java.io.FileInputStream) RETURN(org.apache.xbean.asm6.Opcodes.RETURN) MethodVisitor(org.apache.xbean.asm6.MethodVisitor) Collectors.joining(java.util.stream.Collectors.joining) File(java.io.File) StandardCharsets(java.nio.charset.StandardCharsets) Serializable(java.io.Serializable) Stream(java.util.stream.Stream) DUP(org.apache.xbean.asm6.Opcodes.DUP) JarLocation.jarLocation(org.apache.ziplock.JarLocation.jarLocation) ClassWriter(org.apache.xbean.asm6.ClassWriter) Service(org.talend.sdk.component.api.service.Service) ARETURN(org.apache.xbean.asm6.Opcodes.ARETURN) InputStream(java.io.InputStream) FileInputStream(java.io.FileInputStream) InputStream(java.io.InputStream) JarOutputStream(java.util.jar.JarOutputStream) IOException(java.io.IOException) JarEntry(java.util.jar.JarEntry) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) FileInputStream(java.io.FileInputStream) ClassWriter(org.apache.xbean.asm6.ClassWriter) ClassRemapper(org.apache.xbean.asm6.commons.ClassRemapper) Remapper(org.apache.xbean.asm6.commons.Remapper) FileOutputStream(java.io.FileOutputStream) ClassReader(org.apache.xbean.asm6.ClassReader) JarOutputStream(java.util.jar.JarOutputStream) FileOutputStream(java.io.FileOutputStream) FileInputStream(java.io.FileInputStream) Stream(java.util.stream.Stream) InputStream(java.io.InputStream) File(java.io.File)

Example 5 with ClassWriter

use of org.apache.xbean.asm6.ClassWriter in project component-runtime by Talend.

the class PluginGenerator method createModel.

private byte[] createModel(final JarOutputStream outputStream, String packageName) throws IOException {
    final String className = packageName + "/AModel.class";
    outputStream.putNextEntry(new ZipEntry(className));
    final ClassWriter writer = new ClassWriter(COMPUTE_FRAMES);
    writer.visit(V1_8, ACC_PUBLIC + ACC_SUPER, className.substring(0, className.length() - ".class".length()), null, Type.getInternalName(Object.class), null);
    writer.visitSource(className.replace(".class", ".java"), null);
    addConstructor(writer);
    // no real content (fields/methods) for now
    writer.visitEnd();
    return writer.toByteArray();
}
Also used : ZipEntry(java.util.zip.ZipEntry) ClassWriter(org.apache.xbean.asm6.ClassWriter)

Aggregations

MethodVisitor (org.apache.xbean.asm6.MethodVisitor)8 ClassWriter (org.apache.xbean.asm9.ClassWriter)8 ClassWriter (org.apache.xbean.asm6.ClassWriter)7 MethodVisitor (org.apache.xbean.asm9.MethodVisitor)6 IOException (java.io.IOException)5 InputStream (java.io.InputStream)4 Method (java.lang.reflect.Method)4 HashMap (java.util.HashMap)4 List (java.util.List)4 Stream (java.util.stream.Stream)4 ZipEntry (java.util.zip.ZipEntry)4 ClassReader (org.apache.xbean.asm6.ClassReader)4 File (java.io.File)3 FileInputStream (java.io.FileInputStream)3 FileOutputStream (java.io.FileOutputStream)3 ArrayList (java.util.ArrayList)3 Map (java.util.Map)3 Optional.ofNullable (java.util.Optional.ofNullable)3 JarEntry (java.util.jar.JarEntry)3 JarOutputStream (java.util.jar.JarOutputStream)3