Example usage for org.objectweb.asm Opcodes ACC_PUBLIC

Introduction

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

Prototype

int ACC_PUBLIC

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

Click Source Link

Usage

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

License:Apache License

/**
 * Generates a getter that get the value by directly accessing the class field.
 * @param field The reflection field object.
 */// ww w  .  j a  va  2 s . c o  m
private void directGetter(Field field) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, getMethod(Object.class, "get", Object.class),
            getterSignature(), new Type[0], classWriter);
    // Simply access by field
    // return ((classType)object).fieldName;
    mg.loadArg(0);
    mg.checkCast(Type.getType(field.getDeclaringClass()));
    mg.getField(Type.getType(field.getDeclaringClass()), field.getName(), Type.getType(field.getType()));
    if (field.getType().isPrimitive()) {
        mg.valueOf(Type.getType(field.getType()));
    }
    mg.returnValue();
    mg.endMethod();
}

---

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

License:Apache License

/**
 * Generates a setter that set the value by directly accessing the class field.
 * @param field The reflection field object.
 *//*w ww  .java  2s  . c om*/
private void directSetter(Field field) {
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            getMethod(void.class, "set", Object.class, Object.class), setterSignature(), new Type[0],
            classWriter);
    // Simply access by field
    // ((classType)object).fieldName = (valueType)value;
    mg.loadArg(0);
    mg.checkCast(Type.getType(field.getDeclaringClass()));
    mg.loadArg(1);
    if (field.getType().isPrimitive()) {
        mg.unbox(Type.getType(field.getType()));
    } else {
        mg.checkCast(Type.getType(field.getType()));
    }
    mg.putField(Type.getType(field.getDeclaringClass()), field.getName(), Type.getType(field.getType()));
    mg.returnValue();
    mg.endMethod();
}

---

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

License:Apache License

/**
 * Generates the primitive getter (getXXX) based on the field type.
 * @param field The reflection field object.
 *//*from ww w .j  a v a2 s. co m*/
private void primitiveGetter(Field field) {
    String typeName = field.getType().getName();
    String methodName = String.format("get%c%s", Character.toUpperCase(typeName.charAt(0)),
            typeName.substring(1));

    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            getMethod(field.getType(), methodName, Object.class), null, new Type[0], classWriter);
    if (isPrivate) {
        // get the value using the generic Object get(Object) method and unbox the value
        mg.loadThis();
        mg.loadArg(0);
        mg.invokeVirtual(Type.getObjectType(className), getMethod(Object.class, "get", Object.class));
        mg.unbox(Type.getType(field.getType()));
    } else {
        // Simply access the field.
        mg.loadArg(0);
        mg.checkCast(Type.getType(field.getDeclaringClass()));
        mg.getField(Type.getType(field.getDeclaringClass()), field.getName(), Type.getType(field.getType()));
    }
    mg.returnValue();
    mg.endMethod();
}

---

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

License:Apache License

/**
 * Generates the primitive setter (setXXX) based on the field type.
 * @param field The reflection field object.
 *///from  w  w  w. j  a v a  2 s.c  om
private void primitiveSetter(Field field) {
    String typeName = field.getType().getName();
    String methodName = String.format("set%c%s", Character.toUpperCase(typeName.charAt(0)),
            typeName.substring(1));

    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC,
            getMethod(void.class, methodName, Object.class, field.getType()), null, new Type[0], classWriter);
    if (isPrivate) {
        // set the value using the generic void get(Object, Object) method with boxing the value.
        mg.loadThis();
        mg.loadArgs();
        mg.valueOf(Type.getType(field.getType()));
        mg.invokeVirtual(Type.getObjectType(className),
                getMethod(void.class, "set", Object.class, Object.class));
    } else {
        // Simply access the field.
        mg.loadArg(0);
        mg.checkCast(Type.getType(field.getDeclaringClass()));
        mg.loadArg(1);
        mg.putField(Type.getType(field.getDeclaringClass()), field.getName(), Type.getType(field.getType()));
    }
    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.
 *//* w  w  w  .j  ava2 s  . c om*/
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;//w ww  . j av  a2 s .co  m
    }
    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();
    }//w ww  . j a  v a  2s  . 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();
}

---

From source file:co.cask.tigon.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.tigon.internal.asm.ClassDefinition} that contains generated class information.
 *///w  ww. j av  a  2s  . c  om
ClassDefinition generate(TypeToken<?> outputType, Schema schema) {
    classWriter = new ClassWriter(ClassWriter.COMPUTE_FRAMES);

    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);
    // DEBUG block. Uncomment for debug
    //    co.cask.tigon.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

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

License:Apache License

/**
 * Generates the {@link DatumWriter#encode(Object, co.cask.tigon.io.Encoder)} method.
 * @param outputType Type information of the data type for output
 * @param schema Schema to use for output.
 *///from  w w  w .  ja v a2s .  c  o  m
private void generateEncode(TypeToken<?> outputType, Schema schema) {
    TypeToken<?> callOutputType = getCallTypeToken(outputType, schema);

    Method encodeMethod = getMethod(void.class, "encode", callOutputType.getRawType(), Encoder.class);

    if (!Object.class.equals(callOutputType.getRawType())) {
        // Generate the synthetic method for the bridging
        Method method = getMethod(void.class, "encode", Object.class, Encoder.class);
        GeneratorAdapter mg = new GeneratorAdapter(
                Opcodes.ACC_PUBLIC + Opcodes.ACC_BRIDGE + Opcodes.ACC_SYNTHETIC, method, null,
                new Type[] { Type.getType(IOException.class) }, classWriter);

        mg.loadThis();
        mg.loadArg(0);
        mg.checkCast(Type.getType(callOutputType.getRawType()));
        mg.loadArg(1);
        mg.invokeVirtual(classType, encodeMethod);
        mg.returnValue();
        mg.endMethod();
    }

    // Generate the top level public encode method
    String methodSignature = null;
    if (callOutputType.getType() instanceof ParameterizedType) {
        methodSignature = Signatures.getMethodSignature(encodeMethod, new TypeToken[] { callOutputType, null });
    }
    GeneratorAdapter mg = new GeneratorAdapter(Opcodes.ACC_PUBLIC, encodeMethod, methodSignature,
            new Type[] { Type.getType(IOException.class) }, classWriter);

    // Delegate to the actual encode method(value, encoder, schema, Sets.newIdentityHashSet());
    mg.loadThis();
    mg.loadArg(0);
    mg.loadArg(1);
    mg.loadThis();
    mg.getField(classType, "schema", Type.getType(Schema.class));
    // seenRefs Set
    mg.invokeStatic(Type.getType(Sets.class), getMethod(Set.class, "newIdentityHashSet"));
    mg.invokeVirtual(classType, getEncodeMethod(outputType, schema));
    mg.returnValue();
    mg.endMethod();
}

---

From source file:co.cask.tigon.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.tigon." + name;
        publicOnly = true;/*from  ww w.ja  v a 2 s  .c o  m*/
    }
    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.tigon.internal.asm.Debugs.debugByteCode(classDefinition, new java.io.PrintWriter(System.out));
    // End DEBUG block
    return classDefinition;
}

---

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