Examples with Label jodd.asm5.Label used on opensource projects

Example 26 with Label

use of jodd.asm5.Label in project tomee by apache.

the class LocalBeanProxyFactory method visit.

public static MethodVisitor visit(final ClassWriter cw, final Method method, final String proxyName, final String handlerName) throws ProxyGenerationException {
    final Class<?> returnType = method.getReturnType();
    final Class<?>[] parameterTypes = method.getParameterTypes();
    final Class<?>[] exceptionTypes = method.getExceptionTypes();
    final int modifiers = method.getModifiers();
    // push the method definition
    int modifier = 0;
    if (Modifier.isPublic(modifiers)) {
        modifier = ACC_PUBLIC;
    } else if (Modifier.isProtected(modifiers)) {
        modifier = ACC_PROTECTED;
    }
    final MethodVisitor mv = cw.visitMethod(modifier, method.getName(), getMethodSignatureAsString(returnType, parameterTypes), null, null);
    mv.visitCode();
    // push try/catch block, to catch declared exceptions, and to catch java.lang.Throwable
    final Label l0 = new Label();
    final Label l1 = new Label();
    final Label l2 = new Label();
    if (exceptionTypes.length > 0) {
        mv.visitTryCatchBlock(l0, l1, l2, "java/lang/reflect/InvocationTargetException");
    }
    // push try code
    mv.visitLabel(l0);
    final String classNameToOverride = method.getDeclaringClass().getName().replace('.', '/');
    mv.visitLdcInsn(Type.getType("L" + classNameToOverride + ";"));
    // the following code generates the bytecode for this line of Java:
    // Method method = <proxy>.class.getMethod("add", new Class[] { <array of function argument classes> });
    // get the method name to invoke, and push to stack
    mv.visitLdcInsn(method.getName());
    // create the Class[]
    createArrayDefinition(mv, parameterTypes.length, Class.class);
    int length = 1;
    // push parameters into array
    for (int i = 0; i < parameterTypes.length; i++) {
        // keep copy of array on stack
        mv.visitInsn(DUP);
        final Class<?> parameterType = parameterTypes[i];
        // push number onto stack
        pushIntOntoStack(mv, i);
        if (parameterType.isPrimitive()) {
            final String wrapperType = getWrapperType(parameterType);
            mv.visitFieldInsn(GETSTATIC, wrapperType, "TYPE", "Ljava/lang/Class;");
        } else {
            mv.visitLdcInsn(Type.getType(getAsmTypeAsString(parameterType, true)));
        }
        mv.visitInsn(AASTORE);
        if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
            length += 2;
        } else {
            length++;
        }
    }
    // invoke getMethod() with the method name and the array of types
    mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Class", "getDeclaredMethod", "(Ljava/lang/String;[Ljava/lang/Class;)Ljava/lang/reflect/Method;", false);
    // store the returned method for later
    mv.visitVarInsn(ASTORE, length);
    // the following code generates bytecode equivalent to:
    // return ((<returntype>) invocationHandler.invoke(this, method, new Object[] { <function arguments }))[.<primitive>Value()];
    final Label l4 = new Label();
    mv.visitLabel(l4);
    mv.visitVarInsn(ALOAD, 0);
    // get the invocationHandler field from this class
    mv.visitFieldInsn(GETFIELD, proxyName, handlerName, "Ljava/lang/reflect/InvocationHandler;");
    // we want to pass "this" in as the first parameter
    mv.visitVarInsn(ALOAD, 0);
    // and the method we fetched earlier
    mv.visitVarInsn(ALOAD, length);
    // need to construct the array of objects passed in
    // create the Object[]
    createArrayDefinition(mv, parameterTypes.length, Object.class);
    int index = 1;
    // push parameters into array
    for (int i = 0; i < parameterTypes.length; i++) {
        // keep copy of array on stack
        mv.visitInsn(DUP);
        final Class<?> parameterType = parameterTypes[i];
        // push number onto stack
        pushIntOntoStack(mv, i);
        if (parameterType.isPrimitive()) {
            final String wrapperType = getWrapperType(parameterType);
            mv.visitVarInsn(getVarInsn(parameterType), index);
            mv.visitMethodInsn(INVOKESTATIC, wrapperType, "valueOf", "(" + getPrimitiveLetter(parameterType) + ")L" + wrapperType + ";", false);
            mv.visitInsn(AASTORE);
            if (Long.TYPE.equals(parameterType) || Double.TYPE.equals(parameterType)) {
                index += 2;
            } else {
                index++;
            }
        } else {
            mv.visitVarInsn(ALOAD, index);
            mv.visitInsn(AASTORE);
            index++;
        }
    }
    // invoke the invocationHandler
    mv.visitMethodInsn(INVOKEINTERFACE, "java/lang/reflect/InvocationHandler", "invoke", "(Ljava/lang/Object;Ljava/lang/reflect/Method;[Ljava/lang/Object;)Ljava/lang/Object;", true);
    // cast the result
    mv.visitTypeInsn(CHECKCAST, getCastType(returnType));
    if (returnType.isPrimitive() && !Void.TYPE.equals(returnType)) {
        // get the primitive value
        mv.visitMethodInsn(INVOKEVIRTUAL, getWrapperType(returnType), getPrimitiveMethod(returnType), "()" + getPrimitiveLetter(returnType), false);
    }
    // push return
    mv.visitLabel(l1);
    if (!Void.TYPE.equals(returnType)) {
        mv.visitInsn(getReturnInsn(returnType));
    } else {
        mv.visitInsn(POP);
        mv.visitInsn(RETURN);
    }
    // catch InvocationTargetException
    if (exceptionTypes.length > 0) {
        mv.visitLabel(l2);
        mv.visitVarInsn(ASTORE, length);
        final Label l5 = new Label();
        mv.visitLabel(l5);
        for (int i = 0; i < exceptionTypes.length; i++) {
            final Class<?> exceptionType = exceptionTypes[i];
            mv.visitLdcInsn(Type.getType("L" + exceptionType.getName().replace('.', '/') + ";"));
            mv.visitVarInsn(ALOAD, length);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "getClass", "()Ljava/lang/Class;", false);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/Object", "equals", "(Ljava/lang/Object;)Z", false);
            final Label l6 = new Label();
            mv.visitJumpInsn(IFEQ, l6);
            final Label l7 = new Label();
            mv.visitLabel(l7);
            mv.visitVarInsn(ALOAD, length);
            mv.visitMethodInsn(INVOKEVIRTUAL, "java/lang/reflect/InvocationTargetException", "getCause", "()Ljava/lang/Throwable;", false);
            mv.visitTypeInsn(CHECKCAST, exceptionType.getName().replace('.', '/'));
            mv.visitInsn(ATHROW);
            mv.visitLabel(l6);
            if (i == exceptionTypes.length - 1) {
                mv.visitTypeInsn(NEW, "java/lang/reflect/UndeclaredThrowableException");
                mv.visitInsn(DUP);
                mv.visitVarInsn(ALOAD, length);
                mv.visitMethodInsn(INVOKESPECIAL, "java/lang/reflect/UndeclaredThrowableException", "<init>", "(Ljava/lang/Throwable;)V", false);
                mv.visitInsn(ATHROW);
            }
        }
    }
    // finish this method
    mv.visitMaxs(0, 0);
    return mv;
}

Example 27 with Label

use of jodd.asm5.Label in project googleads-java-lib by googleads.

the class CreateLabels method runExample.

/**
 * Runs the example.
 *
 * @param adManagerServices the services factory.
 * @param session the session.
 * @throws ApiException if the API request failed with one or more service errors.
 * @throws RemoteException if the API request failed due to other errors.
 */
public static void runExample(AdManagerServices adManagerServices, AdManagerSession session) throws RemoteException {
    // Get the LabelService.
    LabelServiceInterface labelService = adManagerServices.get(session, LabelServiceInterface.class);
    // Create a competitive exclusion label.
    Label competitiveExclusionLabel = new Label();
    competitiveExclusionLabel.setName("Car company label #" + new Random().nextInt(Integer.MAX_VALUE));
    competitiveExclusionLabel.setTypes(new LabelType[] { LabelType.COMPETITIVE_EXCLUSION });
    // Create an ad unit frequency cap label.
    Label adUnitFrequencyCapLabel = new Label();
    adUnitFrequencyCapLabel.setName("Don't run too often label #" + new Random().nextInt(Integer.MAX_VALUE));
    adUnitFrequencyCapLabel.setTypes(new LabelType[] { LabelType.AD_UNIT_FREQUENCY_CAP });
    // Create the labels on the server.
    Label[] labels = labelService.createLabels(new Label[] { competitiveExclusionLabel, adUnitFrequencyCapLabel });
    for (Label createdLabel : labels) {
        System.out.printf("A label with ID %d and name '%s' was created.%n", createdLabel.getId(), createdLabel.getName());
    }
}

Example 28 with Label

use of jodd.asm5.Label in project googleads-java-lib by googleads.

the class CreateLabels method runExample.

/**
 * Runs the example.
 *
 * @param adManagerServices the services factory.
 * @param session the session.
 * @throws ApiException if the API request failed with one or more service errors.
 * @throws RemoteException if the API request failed due to other errors.
 */
public static void runExample(AdManagerServices adManagerServices, AdManagerSession session) throws RemoteException {
    // Get the LabelService.
    LabelServiceInterface labelService = adManagerServices.get(session, LabelServiceInterface.class);
    // Create a competitive exclusion label.
    Label competitiveExclusionLabel = new Label();
    competitiveExclusionLabel.setName("Car company label #" + new Random().nextInt(Integer.MAX_VALUE));
    competitiveExclusionLabel.setTypes(new LabelType[] { LabelType.COMPETITIVE_EXCLUSION });
    // Create an ad unit frequency cap label.
    Label adUnitFrequencyCapLabel = new Label();
    adUnitFrequencyCapLabel.setName("Don't run too often label #" + new Random().nextInt(Integer.MAX_VALUE));
    adUnitFrequencyCapLabel.setTypes(new LabelType[] { LabelType.AD_UNIT_FREQUENCY_CAP });
    // Create the labels on the server.
    Label[] labels = labelService.createLabels(new Label[] { competitiveExclusionLabel, adUnitFrequencyCapLabel });
    for (Label createdLabel : labels) {
        System.out.printf("A label with ID %d and name '%s' was created.%n", createdLabel.getId(), createdLabel.getName());
    }
}

Example 29 with Label

use of jodd.asm5.Label in project googleads-java-lib by googleads.

the class UpdateLabels method runExample.

/**
 * Runs the example.
 *
 * @param adManagerServices the services factory.
 * @param session the session.
 * @param labelId the ID of the label to update.
 * @throws ApiException if the API request failed with one or more service errors.
 * @throws RemoteException if the API request failed due to other errors.
 */
public static void runExample(AdManagerServices adManagerServices, AdManagerSession session, long labelId) throws RemoteException {
    // Get the LabelService.
    LabelServiceInterface labelService = adManagerServices.get(session, LabelServiceInterface.class);
    // Create a statement to only select a single label by ID.
    StatementBuilder statementBuilder = new StatementBuilder().where("id = :id").orderBy("id ASC").limit(1).withBindVariableValue("id", labelId);
    // Get the label.
    LabelPage page = labelService.getLabelsByStatement(statementBuilder.toStatement());
    Label label = Iterables.getOnlyElement(Arrays.asList(page.getResults()));
    // Update the label description.
    label.setDescription("New label description");
    // Update the label on the server.
    Label[] labels = labelService.updateLabels(new Label[] { label });
    for (Label updatedLabel : labels) {
        System.out.printf("Label with ID %d and name '%s' was updated.%n", updatedLabel.getId(), updatedLabel.getName());
    }
}

Example 30 with Label

use of jodd.asm5.Label in project googleads-java-lib by googleads.

the class CreateLabels method runExample.

/**
 * Runs the example.
 *
 * @param adManagerServices the services factory.
 * @param session the session.
 * @throws ApiException if the API request failed with one or more service errors.
 * @throws RemoteException if the API request failed due to other errors.
 */
public static void runExample(AdManagerServices adManagerServices, AdManagerSession session) throws RemoteException {
    // Get the LabelService.
    LabelServiceInterface labelService = adManagerServices.get(session, LabelServiceInterface.class);
    // Create a competitive exclusion label.
    Label competitiveExclusionLabel = new Label();
    competitiveExclusionLabel.setName("Car company label #" + new Random().nextInt(Integer.MAX_VALUE));
    competitiveExclusionLabel.setTypes(new LabelType[] { LabelType.COMPETITIVE_EXCLUSION });
    // Create an ad unit frequency cap label.
    Label adUnitFrequencyCapLabel = new Label();
    adUnitFrequencyCapLabel.setName("Don't run too often label #" + new Random().nextInt(Integer.MAX_VALUE));
    adUnitFrequencyCapLabel.setTypes(new LabelType[] { LabelType.AD_UNIT_FREQUENCY_CAP });
    // Create the labels on the server.
    Label[] labels = labelService.createLabels(new Label[] { competitiveExclusionLabel, adUnitFrequencyCapLabel });
    for (Label createdLabel : labels) {
        System.out.printf("A label with ID %d and name '%s' was created.%n", createdLabel.getId(), createdLabel.getName());
    }
}