Example usage for org.objectweb.asm.util CheckClassAdapter CheckClassAdapter

Introduction

In this page you can find the example usage for org.objectweb.asm.util CheckClassAdapter CheckClassAdapter.

Prototype

public CheckClassAdapter(final ClassVisitor classVisitor) 

Source Link

Document

Constructs a new CheckClassAdapter .

Usage

From source file:Test1.java

License:Apache License

private static void implementInterface(ClassNode cn) throws Exception {

    // MethodNode fromMethod = new MethodNode(ACC_PUBLIC, "fromData",
    // "(Ljava/io/DataInput;)V", null, new String[] {
    // "java/io/IOException",
    // "java/lang/ClassNotFoundException" });
    // mv = cw.visitMethod(ACC_PUBLIC, "toData", "(Ljava/io/DataOutput;)V",
    // null, new String[] { "java/io/IOException" });
    MethodNode toMethod = new MethodNode(ACC_PUBLIC, "toData", "(Ljava/io/DataOutput;)V", null,
            new String[] { "java/io/IOException" });
    InsnList instToMethod = toMethod.instructions;
    for (int i = 0; i < cn.fields.size(); i++) {
        FieldNode fn = (FieldNode) cn.fields.get(i);
        toMethod(cn.name, fn, instToMethod);
    }/*w w  w  .ja v  a 2 s  .  c o m*/
    instToMethod.add(new InsnNode(RETURN));
    cn.methods.add(toMethod);

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    cn.accept(cw);
    byte[] bt = cw.toByteArray();

    ClassReader cr = new ClassReader(bt);
    CheckClassAdapter ca = new CheckClassAdapter(cw);
    FileOutputStream fo = new FileOutputStream("d:/x1.log");
    PrintWriter pw = new PrintWriter(fo);
    ca.verify(cr, true, pw);

    ByteArrayClassLoader bacl = new ByteArrayClassLoader(bt);

    Class cls = bacl.loadClass("ynd.test.Ac01");
    DataSerializable di = (DataSerializable) cls.newInstance();
    di.toData(null);
}

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From source file:boilerplate.processor.BinaryProcessor.java

License:Open Source License

public void processBinary(Binary binary) throws IOException {
    String type = binary.getClassName();
    type = type.replace('.', '/');
    byte[] data = binary.loadBytes();

    ClassReader reader = new ClassReader(data);
    ClassWriter writer = new ClassWriter(reader, ClassWriter.COMPUTE_FRAMES);

    ClassVisitor visitor = writer;//ww  w.j a  va 2s . c  om
    visitor = new CheckClassAdapter(visitor);
    // visitor = new TraceClassVisitor(visitor, new
    // PrintWriter(System.out));
    visitor = new ToStringAdapter(logger, type, visitor);
    visitor = new EqualsAdapter(logger, type, visitor);

    reader.accept(visitor, 0);

    data = writer.toByteArray();
    binary.saveBytes(data);
}

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From source file:co.cask.cdap.internal.asm.Debugs.java

License:Apache License

public static void debugByteCode(ClassDefinition classDefinition, PrintWriter writer) {
    ClassReader reader = new ClassReader(classDefinition.getBytecode());
    reader.accept(new CheckClassAdapter(new TraceClassVisitor(writer)), 0);

    File file = new File("/tmp/" + classDefinition.getInternalName() + ".class");
    file.getParentFile().mkdirs();//from   w  w w .j a v a2 s. c  o  m
    writer.println(file);
    writer.flush();
    try {
        ByteStreams.write(classDefinition.getBytecode(), Files.newOutputStreamSupplier(file));
    } catch (IOException e) {
        e.printStackTrace();
    }
}

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From source file:co.paralleluniverse.fibers.instrument.QuasarInstrumentor.java

License:Open Source License

private byte[] instrumentClass(String className, ClassReader r) {
    log(LogLevel.INFO, "TRANSFORM: %s %s", className,
            (db.getClassEntry(className) != null && db.getClassEntry(className).requiresInstrumentation())
                    ? "request"
                    : "");
    final ClassWriter cw = new DBClassWriter(db, r);
    ClassVisitor cv = (check && EXAMINED_CLASS == null) ? new CheckClassAdapter(cw) : cw;

    if (EXAMINED_CLASS != null && className.startsWith(EXAMINED_CLASS))
        cv = new TraceClassVisitor(cv, new PrintWriter(System.out));

    final InstrumentClass ic = new InstrumentClass(cv, db, false);
    byte[] transformed = null;
    try {// w  w  w.j  a va 2 s .  c o  m
        r.accept(ic, ClassReader.SKIP_FRAMES);
        transformed = cw.toByteArray();
    } catch (Exception e) {
        if (ic.hasSuspendableMethods()) {
            error("Unable to instrument class " + className, e);
            throw e;
        } else {
            if (!MethodDatabase.isProblematicClass(className))
                log(LogLevel.DEBUG, "Unable to instrument class " + className);
            return null;
        }
    }

    if (EXAMINED_CLASS != null) {
        if (className.startsWith(EXAMINED_CLASS)) {
            try (OutputStream os = new FileOutputStream(className.replace('/', '.') + ".class")) {
                os.write(transformed);
            } catch (IOException e) {
                throw new RuntimeException(e);
            }
        }

        if (check) {
            ClassReader r2 = new ClassReader(transformed);
            ClassVisitor cv2 = new CheckClassAdapter(new TraceClassVisitor(null), true);
            r2.accept(cv2, 0);
        }
    }

    return transformed;
}

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From source file:com.chiralbehaviors.janus.TestCompositeClassGenerator.java

License:Open Source License

public void testGeneratedBits() {
    CompositeClassGenerator generator = new CompositeClassGenerator(Composite1.class);
    byte[] generatedBits = generator.generateClassBits();
    assertNotNull(generatedBits);/*w w w . ja  va2  s.c om*/
    TraceClassVisitor tcv = new TraceClassVisitor(new PrintWriter(System.out));
    CheckClassAdapter cv = new CheckClassAdapter(tcv);
    ClassReader reader = new ClassReader(generatedBits);
    reader.accept(cv, 0);
}

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From source file:com.cinnober.msgcodec.blink.BaseByteCodeGenerator.java

License:Open Source License

public byte[] generateClass(Schema schema, int suffix) {
    if (!schema.isBound()) {
        throw new IllegalArgumentException("Schema is not bound");
    }//  w w w  .j a  v  a2 s.  co m

    ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    ClassVisitor cv = classWriter;
    StringWriter traceString = null;
    if (log.isLoggable(Level.FINER)) {
        traceString = new StringWriter();
        cv = new TraceClassVisitor(cv, new PrintWriter(traceString));
    }
    cv = new CheckClassAdapter(cv);
    if (schema.getBinding().getGroupTypeAccessor() == JavaClassGroupTypeAccessor.INSTANCE) {
        generateCodecJ(cv, schema, suffix);
    } else {
        generateCodecG(cv, schema, suffix);
    }
    byte[] bytes = classWriter.toByteArray();

    if (log.isLoggable(Level.FINE)) {
        log.log(Level.FINE, "Generated codec class " + GENERATED_CLASS_INAME + suffix + " for schema UID: "
                + schema.getUID());
        if (log.isLoggable(Level.FINER)) {
            log.finer("Generated code (#" + suffix + "):\n" + traceString.toString());
        }
        if (log.isLoggable(Level.FINEST)) {
            log.finest("Generated bytecode (#" + suffix + "):\n"
                    + ByteArrays.toHex(bytes, 0, bytes.length, 1, 8, 32));
        }
    }
    return bytes;
}

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From source file:com.dragome.callbackevictor.serverside.bytecode.transformation.asm.AsmClassTransformer.java

License:Apache License

private ClassVisitor decorateClassVisitor(ClassVisitor visitor, final boolean check,
        final PrintStream dumpStream) {
    if (check) {/*from  w w w.j  a  v  a 2s.c  o m*/
        visitor = new CheckClassAdapter(visitor);
        if (null != CHECK_DATA_FLOW) {
            try {
                // Currently CheckMethodAdapter throws error, so suppress flow checks
                CHECK_DATA_FLOW.set(visitor, Boolean.FALSE);
            } catch (final IllegalAccessException ex) {
                throw new RuntimeException(ex);
            }
        }
    }

    if (null != dumpStream) {
        visitor = new TraceClassVisitor(visitor, new PrintWriter(dumpStream));
    }

    return visitor;
}

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From source file:com.enea.jcarder.agent.instrument.ClassTransformer.java

License:GNU General Public License

private byte[] instrument(final ClassLoader classLoader, final byte[] originalClassBuffer,
        final String className) {
    if (className.startsWith("com.enea.jcarder") && !className.startsWith("com.enea.jcarder.testclasses")) {
        return null; // Don't instrument ourself.
    }/*from w  ww .j a  v  a 2 s.  c  om*/
    final String reason = isInstrumentable(className);
    if (reason != null) {
        mLogger.finest("Won't instrument class " + className + ": " + reason);
        return null;
    }
    if (!isCompatibleClassLoader(classLoader)) {
        mLogger.finest(
                "Can't instrument class " + className + " loaded with " + getClassLoaderName(classLoader));
        return null;
    }
    final ClassReader reader = new ClassReader(originalClassBuffer);
    final ClassWriter writer = new ClassWriter(true);
    ClassVisitor visitor = writer;
    if (mInstrumentConfig.getValidateTransfomedClasses()) {
        visitor = new CheckClassAdapter(visitor);
    }
    visitor = new ClassAdapter(mLogger, visitor, className);
    reader.accept(visitor, false);
    byte[] instrumentedClassfileBuffer = writer.toByteArray();
    if (mInstrumentConfig.getDumpClassFiles()) {
        dumpClassToFile(originalClassBuffer, mOriginalClassesDir, className);
        dumpClassToFile(instrumentedClassfileBuffer, mInstrumentedClassesDir, className);
    }
    return instrumentedClassfileBuffer;
}

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From source file:com.gargoylesoftware.js.nashorn.internal.tools.nasgen.ScriptClassInstrumentor.java

License:Open Source License

/**
 * External entry point for ScriptClassInfoCollector if run from the command line
 *
 * @param args arguments - one argument is needed, the name of the class to collect info from
 *
 * @throws IOException if there are problems reading class
 *///from   w w  w  .j  a v  a 2s . c o m
public static void main(final String[] args) throws IOException {
    if (args.length != 1) {
        System.err.println("Usage: " + ScriptClassInstrumentor.class.getName() + " <class>");
        System.exit(1);
    }

    final String fileName = args[0].replace('.', '/') + ".class";
    final ScriptClassInfo sci = ClassGenerator.getScriptClassInfo(fileName);
    if (sci == null) {
        System.err.println("No @ScriptClass in " + fileName);
        System.exit(2);
        throw new AssertionError(); //guard against warning that sci is null below
    }

    try {
        sci.verify();
    } catch (final Exception e) {
        System.err.println(e.getMessage());
        System.exit(3);
    }

    final ClassWriter writer = ClassGenerator.makeClassWriter();
    try (final BufferedInputStream bis = new BufferedInputStream(new FileInputStream(fileName))) {
        final ClassReader reader = new ClassReader(bis);
        final CheckClassAdapter checker = new CheckClassAdapter(writer);
        final ScriptClassInstrumentor instr = new ScriptClassInstrumentor(checker, sci);
        reader.accept(instr, 0);
    }

    try (FileOutputStream fos = new FileOutputStream(fileName)) {
        fos.write(writer.toByteArray());
    }
}

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From source file:com.gargoylesoftware.js.nashorn.internal.tools.nasgen.ScriptClassJavaInstrumentor.java

License:Open Source License

public static String getString(final String fileName) throws IOException {
    final ScriptClassInfo sci = ClassJavaGenerator.getScriptClassInfo(fileName);
    if (sci == null) {
        System.err.println("No @ScriptClass in " + fileName);
        System.exit(2);//from w w w.ja  v  a2 s . co m
        throw new AssertionError(); //guard against warning that sci is null below
    }

    try {
        sci.verify();
    } catch (final Exception e) {
        System.err.println(e.getMessage());
        System.exit(3);
    }

    final ClassWriter writer = ClassJavaGenerator.makeClassWriter();
    try (final BufferedInputStream bis = new BufferedInputStream(new FileInputStream(fileName))) {
        final ClassReader reader = new ClassReader(bis);
        final CheckClassAdapter checker = new CheckClassAdapter(writer);
        final ScriptClassJavaInstrumentor instr = new ScriptClassJavaInstrumentor(checker, sci);
        reader.accept(instr, 0);
    }

    String name = sci.getJavaName();
    name = name.substring(name.lastIndexOf('/') + 1);
    return ClassJavaGenerator.getCode(name);
}

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