Java Code Examples for org.objectweb.asm.ClassWriter#visitSource()

The following examples show how to use org.objectweb.asm.ClassWriter#visitSource() . You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may check out the related API usage on the sidebar.
Example 1
Source File: RClassGenerator.java    From bazel with Apache License 2.0 6 votes vote down vote up 
private String writeInnerClassHeader(
    String fullyQualifiedOuterClass, String innerClass, ClassWriter innerClassWriter) {
  String fullyQualifiedInnerClass = fullyQualifiedOuterClass + "$" + innerClass;
  innerClassWriter.visit(
      JAVA_VERSION,
      Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_SUPER,
      fullyQualifiedInnerClass,
      null, /* signature */
      SUPER_CLASS,
      null /* interfaces */);
  innerClassWriter.visitSource(SdkConstants.FN_RESOURCE_CLASS, null);
  writeConstructor(innerClassWriter);
  innerClassWriter.visitInnerClass(
      fullyQualifiedInnerClass,
      fullyQualifiedOuterClass,
      innerClass,
      Opcodes.ACC_PUBLIC | Opcodes.ACC_FINAL | Opcodes.ACC_STATIC);
  return fullyQualifiedInnerClass;
}
Example 2
Source File: CreateTest.java    From AVM with MIT License 6 votes vote down vote up 
private byte[] getByteCodeForEmptyClass() {
    ClassWriter classWriter = new ClassWriter(0);
    MethodVisitor methodVisitor;

    classWriter.visit(V10, ACC_PUBLIC | ACC_SUPER, "a/Main", null, "java/lang/Object", null);

    classWriter.visitSource("Main.java", null);
    {
        methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        methodVisitor.visitCode();
        Label label0 = new Label();
        methodVisitor.visitLabel(label0);
        methodVisitor.visitLineNumber(3, label0);
        methodVisitor.visitVarInsn(ALOAD, 0);
        methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        methodVisitor.visitInsn(RETURN);
        methodVisitor.visitMaxs(1, 1);
        methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
}
Example 3
Source File: CreateTest.java    From AVM with MIT License 6 votes vote down vote up 
private byte[] getByteCodeForClassWithoutSuperName() {
    ClassWriter classWriter = new ClassWriter(0);
    MethodVisitor methodVisitor;

    classWriter.visit(V10, ACC_PUBLIC | ACC_SUPER, "b/Main", null, null, null);

    classWriter.visitSource("Main.java", null);
    {
        methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        methodVisitor.visitCode();
        Label label0 = new Label();
        methodVisitor.visitLabel(label0);
        methodVisitor.visitLineNumber(3, label0);
        methodVisitor.visitVarInsn(ALOAD, 0);
        methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        methodVisitor.visitInsn(RETURN);
        methodVisitor.visitMaxs(1, 1);
        methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
}
Example 4
Source File: UserlibCollisionTest.java    From AVM with MIT License 6 votes vote down vote up 
private static byte[] getJavaLangPackageClassBytes() {

        ClassWriter classWriter = new ClassWriter(0);
        MethodVisitor methodVisitor;

        classWriter.visit(V10, ACC_PUBLIC | ACC_SUPER, "java/lang/MyClass", null, "java/lang/Object", null);

        classWriter.visitSource("MyClass.java", null);
        {
            methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            methodVisitor.visitCode();
            Label label0 = new Label();
            methodVisitor.visitLabel(label0);
            methodVisitor.visitLineNumber(3, label0);
            methodVisitor.visitVarInsn(ALOAD, 0);
            methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
            methodVisitor.visitInsn(RETURN);
            methodVisitor.visitMaxs(1, 1);
            methodVisitor.visitEnd();
        }
        classWriter.visitEnd();

        return classWriter.toByteArray();
    }
Example 5
Source File: UserlibCollisionTest.java    From AVM with MIT License 6 votes vote down vote up 
private static byte[] getAvmPackageClassBytes() {

        ClassWriter classWriter = new ClassWriter(0);
        MethodVisitor methodVisitor;

        classWriter.visit(V10, ACC_PUBLIC | ACC_SUPER, "avm/Main", null, "java/lang/Object", null);

        classWriter.visitSource("Main.java", null);
        {
            methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            methodVisitor.visitCode();
            Label label0 = new Label();
            methodVisitor.visitLabel(label0);
            methodVisitor.visitLineNumber(3, label0);
            methodVisitor.visitVarInsn(ALOAD, 0);
            methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
            methodVisitor.visitInsn(RETURN);
            methodVisitor.visitMaxs(1, 1);
            methodVisitor.visitEnd();
        }
        classWriter.visitEnd();

        return classWriter.toByteArray();
    }
Example 6
Source File: InterfaceFieldClassGeneratorTest.java    From AVM with MIT License 6 votes vote down vote up 
public static byte[] getNestedInterfaceCalledFIELDSLevelOne() {
    ClassWriter classWriter = new ClassWriter(0);
    FieldVisitor fieldVisitor;

    classWriter.visit(V10, ACC_ABSTRACT | ACC_INTERFACE, "NestedInterfaces$FIELDS", null, "java/lang/Object", null);

    classWriter.visitSource("NestedInterfaces.java", null);

    classWriter.visitInnerClass("NestedInterfaces$FIELDS", "NestedInterfaces", "FIELDS", ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

    classWriter.visitInnerClass("NestedInterfaces$FIELDS$FIELDS", "NestedInterfaces$FIELDS", "FIELDS", ACC_PUBLIC | ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

    {
        fieldVisitor = classWriter.visitField(ACC_PUBLIC | ACC_FINAL | ACC_STATIC, "a", "I", null, Integer.valueOf(101));
        fieldVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
}
Example 7
Source File: MyClassLoaderTest.java    From jackson-modules-base with Apache License 2.0 6 votes vote down vote up 
/**
 * Create simple stub bytecode for a class with only a no-arg constructor.
 *
 * @param baseName      the base class name for the new class
 * @param superClass    the superclass from which the new class should extend
 * @return              the bytecode for a new class
 */
private static byte[] generateTestClassByteCode(ClassName baseName, Class<?> superClass) {
    final String tmpClassName = baseName.getSlashedTemplate();
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_MAXS);
    String superClassName = superClass.getName().replace(".", "/");

    cw.visit(V1_5, ACC_PUBLIC + ACC_SUPER + ACC_FINAL, tmpClassName, null, superClassName, null);
    cw.visitSource(baseName.getSourceFilename(), null);

    // default (no-arg) constructor:
    MethodVisitor mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(ALOAD, 0);
    mv.visitMethodInsn(INVOKESPECIAL, superClassName, "<init>", "()V", false);
    mv.visitInsn(RETURN);
    mv.visitMaxs(0, 0);
    mv.visitEnd();

    cw.visitEnd();
    return cw.toByteArray();
}
Example 8
Source File: UnbalancedMonitorsTest.java    From openjdk-jdk9 with GNU General Public License v2.0 6 votes vote down vote up 
public static byte[] generateClass() {

        ClassWriter cw = new ClassWriter(0);

        cw.visit(52, ACC_SUPER | ACC_PUBLIC, INNER_CLASS_NAME_INTERNAL, null, "java/lang/Object", null);

        cw.visitSource("UnbalancedMonitorsTest.java", null);

        cw.visitInnerClass(INNER_CLASS_NAME_INTERNAL, CLASS_NAME_INTERNAL, "UnbalancedMonitors", ACC_STATIC);

        visitConstructor(cw);
        visitWrongOrder(cw);
        visitBlockStructured(cw, true, false);
        visitBlockStructured(cw, true, true);
        visitBlockStructured(cw, false, false);
        visitBlockStructured(cw, false, true);
        cw.visitEnd();

        return cw.toByteArray();
    }
Example 9
Source File: Code.java    From es6draft with MIT License 5 votes vote down vote up 
private static ClassCode newClass(ConstantPool constantPool, int access, String className, ClassSignature signature,
        Type superClass, List<Type> interfaces, SourceInfo sourceInfo) {
    if ((access & ~Modifier.classModifiers()) != 0) {
        throw new IllegalArgumentException();
    }
    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES | ClassWriter.COMPUTE_MAXS);
    cw.visit(JAVA_VERSION, access | Opcodes.ACC_SUPER, className, signature.toString(), superClass.internalName(),
            toInternalNames(interfaces));
    cw.visitSource(sourceInfo.getFileName(), sourceInfo.getSourceMap());

    return new ClassCode(constantPool, className, cw);
}
Example 10
Source File: GroupClassGenerator.java    From grappa with Apache License 2.0 5 votes vote down vote up 
private void generateClassBasics(final InstructionGroup group,
    final ClassWriter cw)
{
    cw.visit(Opcodes.V1_8, ACC_PUBLIC + ACC_FINAL + ACC_SYNTHETIC,
        group.getGroupClassType().getInternalName(), null,
        getBaseType().getInternalName(), null);
    cw.visitSource(classNode.sourceFile, null);
}
Example 11
Source File: DefaultApplicationFactory.java    From thorntail with Apache License 2.0 5 votes vote down vote up 
static byte[] basicClassBytes() {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;

    cw.visit(52, ACC_PUBLIC + ACC_SUPER, "org/wildfly/swarm/jaxrs/runtime/DefaultApplication", null, "javax/ws/rs/core/Application", null);

    cw.visitSource("DefaultApplication.java", null);
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(23, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "javax/ws/rs/core/Application", "<init>", "()V", false);
        mv.visitInsn(RETURN);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLocalVariable("this", "Lorg/wildfly/swarm/jaxrs/runtime/DefaultApplication;", null, l0, l1, 0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }
    cw.visitEnd();

    return cw.toByteArray();

}
Example 12
Source File: InterfaceFieldClassGeneratorTest.java    From AVM with MIT License 5 votes vote down vote up 
public static byte[] getNestedInterfaceCalledFIELDSLevelTwo() {

        ClassWriter classWriter = new ClassWriter(0);
        FieldVisitor fieldVisitor;
        MethodVisitor methodVisitor;

        classWriter.visit(V10, ACC_PUBLIC | ACC_ABSTRACT | ACC_INTERFACE, "NestedInterfaces$FIELDS$FIELDS", null, "java/lang/Object", null);

        classWriter.visitSource("NestedInterfaces.java", null);

        classWriter.visitInnerClass("NestedInterfaces$FIELDS", "NestedInterfaces", "FIELDS", ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

        classWriter.visitInnerClass("NestedInterfaces$FIELDS$FIELDS", "NestedInterfaces$FIELDS", "FIELDS", ACC_PUBLIC | ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

        {
            fieldVisitor = classWriter.visitField(ACC_PUBLIC | ACC_FINAL | ACC_STATIC, "b", "I", null, null);
            fieldVisitor.visitEnd();
        }
        {
            methodVisitor = classWriter.visitMethod(ACC_STATIC, "<clinit>", "()V", null, null);
            methodVisitor.visitCode();
            Label label0 = new Label();
            methodVisitor.visitLabel(label0);
            methodVisitor.visitLineNumber(7, label0);
            methodVisitor.visitTypeInsn(NEW, "java/lang/Object");
            methodVisitor.visitInsn(DUP);
            methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
            methodVisitor.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "hashCode", "()I", false);
            methodVisitor.visitFieldInsn(PUTSTATIC, "NestedInterfaces$FIELDS$FIELDS", "b", "I");
            methodVisitor.visitInsn(RETURN);
            methodVisitor.visitMaxs(2, 0);
            methodVisitor.visitEnd();
        }
        classWriter.visitEnd();

        return classWriter.toByteArray();
    }
Example 13
Source File: InterfaceFieldClassGeneratorTest.java    From AVM with MIT License 5 votes vote down vote up 
public static byte[] getInnerFILEDSInterfaceBytes() {
    ClassWriter classWriter = new ClassWriter(0);
    MethodVisitor methodVisitor;

    classWriter.visit(V10, ACC_PUBLIC | ACC_SUPER, "NestedInterfaces", null, "java/lang/Object", null);

    classWriter.visitSource("NestedInterfaces.java", null);

    classWriter.visitInnerClass("NestedInterfaces$FIELDS", "NestedInterfaces", "FIELDS", ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

    classWriter.visitInnerClass("NestedInterfaces$FIELDS$FIELDS", "NestedInterfaces$FIELDS", "FIELDS", ACC_PUBLIC | ACC_STATIC | ACC_ABSTRACT | ACC_INTERFACE);

    {
        methodVisitor = classWriter.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        methodVisitor.visitCode();
        Label label0 = new Label();
        methodVisitor.visitLabel(label0);
        methodVisitor.visitLineNumber(3, label0);
        methodVisitor.visitVarInsn(ALOAD, 0);
        methodVisitor.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        methodVisitor.visitInsn(RETURN);
        methodVisitor.visitMaxs(1, 1);
        methodVisitor.visitEnd();
    }
    classWriter.visitEnd();

    return classWriter.toByteArray();
}
Example 14
Source File: ClientServiceFactory.java    From thorntail with Apache License 2.0 4 votes vote down vote up 
static byte[] createImpl(String implName, ClassInfo classInfo) {
    ClassWriter cw = new ClassWriter(0);
    MethodVisitor mv;
    AnnotationVisitor av0;

    cw.visit(V1_8, ACC_PUBLIC + ACC_SUPER,
             implName.replace('.', '/'),
             null,
             "java/lang/Object",
             new String[]{classInfo.name().toString().replace('.', '/')}
    );

    int lastDot = implName.lastIndexOf('.');
    String simpleName = implName.substring(lastDot + 1);

    cw.visitSource(simpleName + ".java", null);
    {
        av0 = cw.visitAnnotation("Ljavax/enterprise/context/ApplicationScoped;", true);
        av0.visitEnd();
    }
    cw.visitInnerClass("javax/ws/rs/client/Invocation$Builder", "javax/ws/rs/client/Invocation", "Builder", ACC_PUBLIC + ACC_STATIC + ACC_ABSTRACT + ACC_INTERFACE);

    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
        mv.visitCode();
        Label l0 = new Label();
        mv.visitLabel(l0);
        mv.visitLineNumber(14, l0);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        Label l1 = new Label();
        mv.visitLabel(l1);
        mv.visitLineNumber(15, l1);
        mv.visitInsn(RETURN);
        Label l2 = new Label();
        mv.visitLabel(l2);
        mv.visitLocalVariable("this",
                              buildTypeDef(implName),
                              null,
                              l0,
                              l2,
                              0);
        mv.visitMaxs(1, 1);
        mv.visitEnd();
    }

    List<AnnotationInstance> annotations = classInfo.annotations().get(DotName.createSimple("org.wildfly.swarm.client.jaxrs.Service"));
    String baseUrl = (String) annotations.get(0).value("baseUrl").value();
    int lineNum = 18;

    classInfo.asClass().methods()
            .stream()
            .forEachOrdered(method -> {
                createMethod(cw, implName, classInfo.name().toString(), method, lineNum, baseUrl);
            });
    cw.visitEnd();

    return cw.toByteArray();
}
Example 15
Source File: ApplicationFactory.java    From ARCHIVE-wildfly-swarm with Apache License 2.0 4 votes vote down vote up 
public static byte[] create(String name, String context) {

        ClassWriter cw = new ClassWriter(0);
        MethodVisitor mv;
        AnnotationVisitor av0;

        cw.visit(V1_7, ACC_PUBLIC + ACC_SUPER,
                name.replace('.', '/'),
                null,
                "javax/ws/rs/core/Application", null);

        int lastDot = name.lastIndexOf('.');
        String simpleName = name.substring(lastDot + 1);
        cw.visitSource(simpleName + ".java", null);

        {
            av0 = cw.visitAnnotation("Ljavax/ws/rs/ApplicationPath;", true);
            av0.visit("value", "/");
            av0.visitEnd();
        }
        {
            mv = cw.visitMethod(ACC_PUBLIC, "<init>", "()V", null, null);
            mv.visitCode();
            Label l0 = new Label();
            mv.visitLabel(l0);
            mv.visitLineNumber(10, l0);
            mv.visitVarInsn(ALOAD, 0);
            mv.visitMethodInsn(INVOKESPECIAL, "javax/ws/rs/core/Application", "<init>", "()V", false);
            mv.visitInsn(RETURN);
            Label l1 = new Label();
            mv.visitLabel(l1);
            mv.visitLocalVariable("this",
                    "L" + name.replace('.', '/') + ";",
                    null,
                    l0,
                    l1,
                    0);
            mv.visitMaxs(1, 1);
            mv.visitEnd();
        }
        cw.visitEnd();

        return cw.toByteArray();
    }
Example 16
Source File: EventSubscriber.java    From Hyperium with GNU Lesser General Public License v3.0 4 votes vote down vote up 
private Class<?> createHandler(Method callback) {
    // ClassName$methodName_EventClass_XXX
    String name = objName + "$" + callback.getName() + "_" + callback.getParameters()[0].getType().getSimpleName() + "_" + (ID++);
    String eventType = Type.getInternalName(callback.getParameterTypes()[0]);

    ClassWriter cw = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    MethodVisitor mv;
    String desc = name.replace(".", "/");
    String instanceClassName = instance.getClass().getName().replace(".", "/");

    cw.visit(V1_6, ACC_PUBLIC | ACC_SUPER, desc, null, "java/lang/Object", new String[]{ "cc/hyperium/event/EventSubscriber$EventHandler" });

    cw.visitSource(".dynamic", null);
    {
        cw.visitField(ACC_PUBLIC, "instance", "Ljava/lang/Object;", null, null).visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "<init>", "(Ljava/lang/Object;)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitMethodInsn(INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
        mv.visitVarInsn(ALOAD, 0);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitFieldInsn(PUTFIELD, desc, "instance", "Ljava/lang/Object;");
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    {
        mv = cw.visitMethod(ACC_PUBLIC, "handle", "(Ljava/lang/Object;)V", null, null);
        mv.visitCode();
        mv.visitVarInsn(ALOAD, 0);
        mv.visitFieldInsn(GETFIELD, desc, "instance", "Ljava/lang/Object;");
        mv.visitTypeInsn(CHECKCAST, instanceClassName);
        mv.visitVarInsn(ALOAD, 1);
        mv.visitTypeInsn(CHECKCAST, eventType);
        mv.visitMethodInsn(INVOKEVIRTUAL, instanceClassName, callback.getName(), Type.getMethodDescriptor(callback), false);
        mv.visitInsn(RETURN);
        mv.visitMaxs(2, 2);
        mv.visitEnd();
    }
    cw.visitEnd();

    byte[] handlerClassBytes = cw.toByteArray();
    return LOADER.define(name, handlerClassBytes);
}
Example 17
Source File: GenSourceDebugExtension.java    From bazel with Apache License 2.0 4 votes vote down vote up 
public static byte[] dump() {
  ClassWriter cw = new ClassWriter(0);
  MethodVisitor mv;

  cw.visit(
      52,
      Opcodes.ACC_PUBLIC + Opcodes.ACC_SUPER,
      "sourcedebugextension/Test",
      null,
      "java/lang/Object",
      null);

  // This is the important part for the test - it's an example SourceDebugExtension found
  // in Clojure.
  cw.visitSource(
      "dispatch.clj",
      "SMAP\ndispatch.java\nClojure\n*S Clojure\n*F\n+ 1 dispatch.clj\nclojure/pprint/dispatch.clj\n*L\n144#1,8:144\n*E");

  {
    mv = cw.visitMethod(Opcodes.ACC_PUBLIC, "<init>", "()V", null, null);
    mv.visitCode();
    mv.visitVarInsn(Opcodes.ALOAD, 0);
    mv.visitMethodInsn(Opcodes.INVOKESPECIAL, "java/lang/Object", "<init>", "()V", false);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(1, 1);
    mv.visitEnd();
  }
  {
    mv = cw.visitMethod(
        Opcodes.ACC_PUBLIC + Opcodes.ACC_STATIC,
        "main",
        "([Ljava/lang/String;)V",
        null,
        null);
    mv.visitCode();
    mv.visitFieldInsn(Opcodes.GETSTATIC, "java/lang/System", "err", "Ljava/io/PrintStream;");
    mv.visitLdcInsn("Hello");
    mv.visitMethodInsn(
        Opcodes.INVOKEVIRTUAL, "java/io/PrintStream", "println", "(Ljava/lang/String;)V", false);
    mv.visitInsn(Opcodes.RETURN);
    mv.visitMaxs(2, 1);
    mv.visitEnd();
  }
  cw.visitEnd();

  return cw.toByteArray();
}
Example 18
Source File: FastPathGuardsBench.java    From bumblebench with Apache License 2.0 4 votes vote down vote up 
static void visitSourceFileInfo(ClassWriter cw) {
	cw.visitSource(Thread.currentThread().getStackTrace()[3].getFileName(), null);
}