Example usage for org.objectweb.asm Opcodes ACC_FINAL

Introduction

In this page you can find the example usage for org.objectweb.asm Opcodes ACC_FINAL.

Prototype

int ACC_FINAL

To view the source code for org.objectweb.asm Opcodes ACC_FINAL.

Click Source Link

Usage

From source file:Client.JClassPatcher.java

License:Open Source License

private String decodeAccess(int access) {
    String res = "";

    if ((access & Opcodes.ACC_PUBLIC) == Opcodes.ACC_PUBLIC)
        res += "public ";
    if ((access & Opcodes.ACC_PRIVATE) == Opcodes.ACC_PRIVATE)
        res += "private ";
    if ((access & Opcodes.ACC_PROTECTED) == Opcodes.ACC_PROTECTED)
        res += "protected ";

    if ((access & Opcodes.ACC_STATIC) == Opcodes.ACC_STATIC)
        res += "static ";
    if ((access & Opcodes.ACC_FINAL) == Opcodes.ACC_FINAL)
        res += "final ";
    if ((access & Opcodes.ACC_VOLATILE) == Opcodes.ACC_VOLATILE)
        res += "protected ";
    if ((access & Opcodes.ACC_SYNCHRONIZED) == Opcodes.ACC_SYNCHRONIZED)
        res += "synchronized ";
    if ((access & Opcodes.ACC_ABSTRACT) == Opcodes.ACC_ABSTRACT)
        res += "abstract ";
    if ((access & Opcodes.ACC_INTERFACE) == Opcodes.ACC_INTERFACE)
        res += "interface ";

    return res;//www . java 2s. c o  m
}

---

From source file:co.cask.cdap.internal.app.runtime.service.http.HttpHandlerGenerator.java

License:Apache License

/**
 * Generates a new class that implements {@link HttpHandler} by copying methods signatures from the given
 * {@link HttpServiceHandler} class. Calls to {@link HttpServiceHandler} methods are transactional.
 *
 * @param delegateType type of the {@link HttpServiceHandler}
 * @param pathPrefix prefix for all {@code @PATH} annotation
 * @return A {@link ClassDefinition} containing information of the newly generated class.
 * @throws IOException if failed to generate the class.
 *///from www . j  av  a 2 s. co  m
ClassDefinition generate(TypeToken<? extends HttpServiceHandler> delegateType, String pathPrefix)
        throws IOException {
    Class<?> rawType = delegateType.getRawType();
    List<Class<?>> preservedClasses = Lists.newArrayList();
    preservedClasses.add(rawType);

    ClassWriter classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);

    String internalName = Type.getInternalName(rawType);
    String className = internalName + Hashing.md5().hashString(internalName);

    // Generate the class
    Type classType = Type.getObjectType(className);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className,
            getClassSignature(delegateType), Type.getInternalName(AbstractHttpHandlerDelegator.class), null);

    // Inspect the delegate class hierarchy to generate public handler methods.
    for (TypeToken<?> type : delegateType.getTypes().classes()) {
        if (!Object.class.equals(type.getRawType())) {
            inspectHandler(delegateType, type, pathPrefix, classType, classWriter, preservedClasses);
        }
    }

    generateConstructor(delegateType, classWriter);
    generateLogger(classType, classWriter);

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className,
            preservedClasses);
    // DEBUG block. Uncomment for debug
    // co.cask.cdap.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

From source file:co.cask.cdap.internal.app.runtime.service.http.HttpHandlerGenerator.java

License:Apache License

/**
 * Generates a static Logger field for logging and a static initialization block to initialize the logger.
 *//*from   w ww . jav a  2s  . c o  m*/
private void generateLogger(Type classType, ClassWriter classWriter) {
    // private static final Logger LOG = LoggerFactory.getLogger(classType);
    classWriter.visitField(Opcodes.ACC_PRIVATE | Opcodes.ACC_STATIC | Opcodes.ACC_FINAL, "LOG",
            Type.getType(Logger.class).getDescriptor(), null, null);
    Method init = Methods.getMethod(void.class, "<clinit>");
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_STATIC, init, null, null, classWriter);
    mg.visitLdcInsn(classType);
    mg.invokeStatic(Type.getType(LoggerFactory.class),
            Methods.getMethod(Logger.class, "getLogger", Class.class));
    mg.putStatic(classType, "LOG", Type.getType(Logger.class));
    mg.returnValue();
    mg.endMethod();
}

---

From source file:co.cask.cdap.internal.io.DatumWriterGenerator.java

License:Apache License

/**
 * Generates a {@link DatumWriter} class for encoding data of the given output type with the given schema.
 * @param outputType Type information of the output data type.
 * @param schema Schema of the output data type.
 * @return A {@link co.cask.cdap.internal.asm.ClassDefinition} that contains generated class information.
 *///ww  w  .  j  a va2s  . c o  m
ClassDefinition generate(TypeToken<?> outputType, Schema schema) {
    classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    preservedClasses = Lists.newArrayList();

    TypeToken<?> interfaceType = getInterfaceType(outputType);

    // Generate the class
    String className = getClassName(interfaceType, schema);
    classType = Type.getObjectType(className);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className,
            Signatures.getClassSignature(interfaceType), Type.getInternalName(Object.class),
            new String[] { Type.getInternalName(interfaceType.getRawType()) });

    // Static schema hash field, for verification
    classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_STATIC + Opcodes.ACC_FINAL, "SCHEMA_HASH",
            Type.getDescriptor(String.class), null, schema.getSchemaHash().toString()).visitEnd();

    // Schema field
    classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, "schema", Type.getDescriptor(Schema.class),
            null, null).visitEnd();

    // Encode method
    generateEncode(outputType, schema);

    // Constructor
    generateConstructor();

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className,
            preservedClasses);
    // DEBUG block. Uncomment for debug
    //    co.cask.cdap.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

From source file:co.cask.cdap.internal.io.DatumWriterGenerator.java

License:Apache License

/**
 * Generates the constructor. The constructor generated has signature {@code (Schema, FieldAccessorFactory)}.
 *//*  w  ww .j a v a  2 s  .co  m*/
private void generateConstructor() {
    Method constructor = getMethod(void.class, "<init>", Schema.class, FieldAccessorFactory.class);

    // Constructor(Schema schema, FieldAccessorFactory accessorFactory)
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, constructor, null, null, classWriter);

    // super(); // Calling Object constructor
    mg.loadThis();
    mg.invokeConstructor(Type.getType(Object.class), getMethod(void.class, "<init>"));

    // if (!SCHEMA_HASH.equals(schema.getSchemaHash().toString())) { throw IllegalArgumentException }
    mg.getStatic(classType, "SCHEMA_HASH", Type.getType(String.class));
    mg.loadArg(0);
    mg.invokeVirtual(Type.getType(Schema.class), getMethod(SchemaHash.class, "getSchemaHash"));
    mg.invokeVirtual(Type.getType(SchemaHash.class), getMethod(String.class, "toString"));
    mg.invokeVirtual(Type.getType(String.class), getMethod(boolean.class, "equals", Object.class));
    Label hashEquals = mg.newLabel();
    mg.ifZCmp(GeneratorAdapter.NE, hashEquals);
    mg.throwException(Type.getType(IllegalArgumentException.class), "Schema not match.");
    mg.mark(hashEquals);

    // this.schema = schema;
    mg.loadThis();
    mg.loadArg(0);
    mg.putField(classType, "schema", Type.getType(Schema.class));

    // For each record field that needs an accessor, get the accessor and store it in field.
    for (Map.Entry<TypeToken<?>, String> entry : fieldAccessorRequests.entries()) {
        String fieldAccessorName = getFieldAccessorName(entry.getKey(), entry.getValue());

        classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, fieldAccessorName,
                Type.getDescriptor(FieldAccessor.class), null, null);
        // this.fieldAccessorName
        //  = accessorFactory.getFieldAccessor(TypeToken.of(Class.forName("className")), "fieldName");
        mg.loadThis();
        mg.loadArg(1);
        mg.push(entry.getKey().getRawType().getName());
        mg.invokeStatic(Type.getType(Class.class), getMethod(Class.class, "forName", String.class));
        mg.invokeStatic(Type.getType(TypeToken.class), getMethod(TypeToken.class, "of", Class.class));
        mg.push(entry.getValue());
        mg.invokeInterface(Type.getType(FieldAccessorFactory.class),
                getMethod(FieldAccessor.class, "getFieldAccessor", TypeToken.class, String.class));
        mg.putField(classType, fieldAccessorName, Type.getType(FieldAccessor.class));
    }

    mg.returnValue();
    mg.endMethod();
}

---

From source file:co.cask.cdap.internal.io.FieldAccessorGenerator.java

License:Apache License

ClassDefinition generate(Class<?> classType, Field field, boolean publicOnly) {
    String name = String.format("%s$GeneratedAccessor%s", classType.getName(), field.getName());
    if (name.startsWith("java.") || name.startsWith("javax.")) {
        name = "co.cask.cdap." + name;
        publicOnly = true;//from   w w w  .  j  a va2  s.  com
    }
    this.className = name.replace('.', '/');

    if (publicOnly) {
        isPrivate = !Modifier.isPublic(field.getModifiers())
                || !Modifier.isPublic(field.getDeclaringClass().getModifiers());
    } else {
        isPrivate = Modifier.isPrivate(field.getModifiers())
                || Modifier.isPrivate(field.getDeclaringClass().getModifiers());
    }

    // Generate the class
    classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className, null,
            Type.getInternalName(AbstractFieldAccessor.class), new String[0]);

    generateConstructor(field);
    generateGetter(field);
    generateSetter(field);

    classWriter.visitEnd();

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className);
    // DEBUG block. Uncomment for debug
    //    co.cask.cdap.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

From source file:co.cask.cdap.internal.io.FieldAccessorGenerator.java

License:Apache License

private void generateConstructor(Field field) {
    if (isPrivate) {
        classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, "field",
                Type.getDescriptor(Field.class), null, null).visitEnd();
    }/*from   ww w  .  ja  v a  2 s .co  m*/

    // Constructor(Type classType)
    Method constructor = getMethod(void.class, "<init>", java.lang.reflect.Type.class);
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, constructor, null, new Type[0], classWriter);
    mg.loadThis();
    mg.loadArg(0);
    mg.invokeConstructor(Type.getType(AbstractFieldAccessor.class), constructor);
    if (isPrivate) {
        initializeReflectionField(mg, field);
    }

    mg.returnValue();
    mg.endMethod();
}

---

From source file:co.cask.common.internal.io.DatumWriterGenerator.java

License:Apache License

/**
 * Generates a {@link DatumWriter} class for encoding data of the given output type with the given schema.
 * @param outputType Type information of the output data type.
 * @param schema Schema of the output data type.
 * @return A {@link co.cask.common.internal.asm.ClassDefinition} that contains generated class information.
 *//*from   www. ja  v a  2 s  .c o  m*/
ClassDefinition generate(TypeToken<?> outputType, Schema schema) {
    classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    preservedClasses = Lists.newArrayList();

    TypeToken<?> interfaceType = getInterfaceType(outputType);

    // Generate the class
    String className = getClassName(interfaceType, schema);
    classType = Type.getObjectType(className);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className,
            Signatures.getClassSignature(interfaceType), Type.getInternalName(Object.class),
            new String[] { Type.getInternalName(interfaceType.getRawType()) });

    // Static schema hash field, for verification
    classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_STATIC + Opcodes.ACC_FINAL, "SCHEMA_HASH",
            Type.getDescriptor(String.class), null, schema.getSchemaHash().toString()).visitEnd();

    // Schema field
    classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, "schema", Type.getDescriptor(Schema.class),
            null, null).visitEnd();

    // Encode method
    generateEncode(outputType, schema);

    // Constructor
    generateConstructor();

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className,
            preservedClasses);
    // DEBUG block. Uncomment for debug
    //    co.cask.common.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

From source file:co.cask.common.internal.io.FieldAccessorGenerator.java

License:Apache License

ClassDefinition generate(TypeToken<?> classType, Field field, boolean publicOnly) {
    String name = String.format("%s$GeneratedAccessor%s", classType.getRawType().getName(), field.getName());
    if (name.startsWith("java.") || name.startsWith("javax.")) {
        name = "co.cask.cdap." + name;
        publicOnly = true;//from   w ww. jav a  2s.  c  om
    }
    this.className = name.replace('.', '/');

    if (publicOnly) {
        isPrivate = !Modifier.isPublic(field.getModifiers())
                || !Modifier.isPublic(field.getDeclaringClass().getModifiers());
    } else {
        isPrivate = Modifier.isPrivate(field.getModifiers())
                || Modifier.isPrivate(field.getDeclaringClass().getModifiers());
    }

    // Generate the class
    classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);
    classWriter.visit(Opcodes.V1_6, Opcodes.ACC_PUBLIC + Opcodes.ACC_FINAL, className, null,
            Type.getInternalName(AbstractFieldAccessor.class), new String[0]);

    generateConstructor(field);
    generateGetter(field);
    generateSetter(field);

    classWriter.visitEnd();

    ClassDefinition classDefinition = new ClassDefinition(classWriter.toByteArray(), className);
    // DEBUG block. Uncomment for debug
    //    co.cask.common.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

From source file:co.cask.common.internal.io.FieldAccessorGenerator.java

License:Apache License

private void generateConstructor(Field field) {
    if (isPrivate) {
        classWriter.visitField(Opcodes.ACC_PRIVATE + Opcodes.ACC_FINAL, "field",
                Type.getDescriptor(Field.class), null, null).visitEnd();
    }//from  www .  j  av  a 2  s  .  com

    // Constructor(TypeToken<?> classType)
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            getMethod(void.class, "<init>", TypeToken.class), null, new Type[0], classWriter);
    mg.loadThis();
    mg.loadArg(0);
    mg.invokeConstructor(Type.getType(AbstractFieldAccessor.class),
            getMethod(void.class, "<init>", TypeToken.class));
    if (isPrivate) {
        initializeReflectionField(mg, field);
    }

    mg.returnValue();
    mg.endMethod();
}

---

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