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

Example 1 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project jodd by oblac.

the class TargetClassInfoReader method visitEnd.

/**
	 * Stores signatures for all super public methods not already overridden by target class.
	 * All this methods will be accepted for proxyfication.
	 */
@Override
public void visitEnd() {
    // prepare class annotations
    if (classAnnotations != null) {
        annotations = classAnnotations.toArray(new AnnotationInfo[classAnnotations.size()]);
        classAnnotations = null;
    }
    List<String> superList = new ArrayList<>();
    Set<String> allInterfaces = new HashSet<>();
    if (nextInterfaces != null) {
        allInterfaces.addAll(nextInterfaces);
    }
    // check all public super methods that are not overridden in superclass
    while (nextSupername != null) {
        InputStream inputStream = null;
        ClassReader cr = null;
        try {
            inputStream = ClassLoaderUtil.getClassAsStream(nextSupername, classLoader);
            cr = new ClassReader(inputStream);
        } catch (IOException ioex) {
            throw new ProxettaException("Unable to inspect super class: " + nextSupername, ioex);
        } finally {
            StreamUtil.close(inputStream);
        }
        superList.add(nextSupername);
        // remember the super class reader
        superClassReaders.add(cr);
        cr.accept(new SuperClassVisitor(), 0);
        if (cr.getInterfaces() != null) {
            Collections.addAll(allInterfaces, cr.getInterfaces());
        }
    }
    superClasses = superList.toArray(new String[superList.size()]);
    // check all interface methods that are not overridden in super-interface
    for (String next : allInterfaces) {
        InputStream inputStream = null;
        ClassReader cr = null;
        try {
            inputStream = ClassLoaderUtil.getClassAsStream(next, classLoader);
            cr = new ClassReader(inputStream);
        } catch (IOException ioex) {
            throw new ProxettaException("Unable to inspect super interface: " + next, ioex);
        } finally {
            StreamUtil.close(inputStream);
        }
        // remember the super class reader
        superClassReaders.add(cr);
        cr.accept(new SuperClassVisitor(), 0);
    }
}

Example 2 with ClassReader

use of org.apache.xbean.asm9.ClassReader 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('/', '.');
}

Example 3 with ClassReader

use of org.apache.xbean.asm9.ClassReader in project apex-core by apache.

the class FastClassIndexReaderTest method testIndexReader.

@Test
public void testIndexReader() throws IOException {
    String javahome = System.getProperty("java.home");
    String jdkJar = javahome + "/lib/rt.jar";
    JarFile jar = new JarFile(jdkJar);
    java.util.Enumeration<JarEntry> entriesEnum = jar.entries();
    while (entriesEnum.hasMoreElements()) {
        JarEntry jarEntry = entriesEnum.nextElement();
        if (jarEntry.getName().endsWith("class")) {
            InputStream ins = jar.getInputStream(jarEntry);
            ClassReader classReader = new ClassReader(ins);
            ClassNodeType classN = new ClassNodeType();
            classReader.accept(classN, ClassReader.SKIP_CODE);
            CompactClassNode ccn = CompactUtil.compactClassNode(classN);
            ins.close();
            ins = jar.getInputStream(jarEntry);
            FastClassIndexReader fastClassIndexReader = new FastClassIndexReader(ins);
            Assert.assertEquals("The wrong class is " + classN.name, classN.name, fastClassIndexReader.getName());
            Assert.assertEquals("The wrong class is " + classN.name, classN.superName, fastClassIndexReader.getSuperName());
            Assert.assertEquals("The wrong class is " + classN.name, !ASMUtil.isAbstract(classN.access) && ASMUtil.isPublic(classN.access) && ccn.getDefaultConstructor() != null, fastClassIndexReader.isInstantiable());
            Assert.assertArrayEquals("The wrong class is " + classN.name, classN.interfaces.toArray(), fastClassIndexReader.getInterfaces());
        }
    }
}

Example 4 with ClassReader

use of org.apache.xbean.asm9.ClassReader 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;
}

Example 5 with ClassReader

use of org.apache.xbean.asm9.ClassReader 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;
}