Java Annotation类代码示例

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the {@code EnclosingMethod} attribute out of a given
 * {@link AttributeList}, if any, translating it to an annotation.
 * If the class really has an enclosing method, this returns an
 * {@code EnclosingMethod} annotation; if not, this returns
 * an {@code EnclosingClass} annotation.
 *
 * @param attribs {@code non-null;} the attributes list to search in
 * @return {@code null-ok;} the converted {@code EnclosingMethod} or
 * {@code EnclosingClass} annotation, if there was an
 * attribute to translate
 */
private static Annotation translateEnclosingMethod(AttributeList attribs) {
    AttEnclosingMethod enclosingMethod = (AttEnclosingMethod)
        attribs.findFirst(AttEnclosingMethod.ATTRIBUTE_NAME);

    if (enclosingMethod == null) {
        return null;
    }

    CstType enclosingClass = enclosingMethod.getEnclosingClass();
    CstNat nat = enclosingMethod.getMethod();

    if (nat == null) {
        /*
         * Dalvik doesn't use EnclosingMethod annotations unless
         * there really is an enclosing method. Anonymous classes
         * are unambiguously identified by having an InnerClass
         * annotation with an empty name along with an appropriate
         * EnclosingClass.
         */
        return AnnotationUtils.makeEnclosingClass(enclosingClass);
    }

    return AnnotationUtils.makeEnclosingMethod(
            new CstMethodRef(enclosingClass, nat));
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs an instance.
 *
 * @param annotation {@code non-null;} annotation to represent
 * @param dexFile {@code non-null;} dex output
 */
public AnnotationItem(Annotation annotation, DexFile dexFile) {
    /*
     * The write size isn't known up-front because (the variable-lengthed)
     * leb128 type is used to represent some things.
     */
    super(ALIGNMENT, -1);

    if (annotation == null) {
        throw new NullPointerException("annotation == null");
    }

    this.annotation = annotation;
    this.type = null;
    this.encodedForm = null;
    addContents(dexFile);
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Inspects a class annotation.
 *
 * @param cf {@code non-null;} class file
 * @param ann {@code non-null;} annotation
 */
private void visitClassAnnotation(DirectClassFile cf,
        BaseAnnotations ann) {

    if (!args.eTypes.contains(ElementType.TYPE)) {
        return;
    }

    for (Annotation anAnn : ann.getAnnotations().getAnnotations()) {
        String annClassName
                = anAnn.getType().getClassType().getClassName();
        if (args.aclass.equals(annClassName)) {
            printMatch(cf);
        }
    }
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs an instance.
 *
 * @param annotation {@code non-null;} annotation to represent
 */
public AnnotationItem(Annotation annotation) {
    /*
     * The write size isn't known up-front because (the variable-lengthed)
     * leb128 type is used to represent some things.
     */
    super(ALIGNMENT, -1);

    if (annotation == null) {
        throw new NullPointerException("annotation == null");
    }

    this.annotation = annotation;
    this.type = null;
    this.encodedForm = null;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the annotations out of a given {@link AttributeList}. This
 * combines both visible and invisible annotations into a single
 * result set and also adds in a system annotation for the
 * {@code Signature} attribute if present.
 *
 * @param attribs {@code non-null;} the attributes list to search in
 * @return {@code non-null;} the set of annotations, which may be empty
 */
public static Annotations getAnnotations(AttributeList attribs) {
    Annotations result = getAnnotations0(attribs);
    Annotation signature = getSignature(attribs);

    if (signature != null) {
        result = Annotations.combine(result, signature);
    }

    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the annotations out of a given class, similar to {@link
 * #getAnnotations}, also including annotations for translations
 * of class-level attributes {@code EnclosingMethod} and
 * {@code InnerClasses}, if present. Additionally, if the
 * class is an annotation class, then this also includes a
 * representation of all the {@code AnnotationDefault}
 * values.
 *
 * @param cf {@code non-null;} the class in question
 * @param args {@code non-null;} the high-level options
 * @return {@code non-null;} the set of annotations, which may be empty
 */
public static Annotations getClassAnnotations(DirectClassFile cf,
        CfOptions args) {
    CstType thisClass = cf.getThisClass();
    AttributeList attribs = cf.getAttributes();
    Annotations result = getAnnotations(attribs);
    Annotation enclosingMethod = translateEnclosingMethod(attribs);

    try {
        Annotations innerClassAnnotations =
            translateInnerClasses(thisClass, attribs,
                    enclosingMethod == null);
        if (innerClassAnnotations != null) {
            result = Annotations.combine(result, innerClassAnnotations);
        }
    } catch (Warning warn) {
        args.warn.println("warning: " + warn.getMessage());
    }

    if (enclosingMethod != null) {
        result = Annotations.combine(result, enclosingMethod);
    }

    if (AccessFlags.isAnnotation(cf.getAccessFlags())) {
        Annotation annotationDefault =
            translateAnnotationDefaults(cf);
        if (annotationDefault != null) {
            result = Annotations.combine(result, annotationDefault);
        }
    }

    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the annotations out of a given method, similar to {@link
 * #getAnnotations}, also including an annotation for the translation
 * of the method-specific attribute {@code Exceptions}.
 *
 * @param method {@code non-null;} the method in question
 * @return {@code non-null;} the set of annotations, which may be empty
 */
public static Annotations getMethodAnnotations(Method method) {
    Annotations result = getAnnotations(method.getAttributes());
    TypeList exceptions = getExceptions(method);

    if (exceptions.size() != 0) {
        Annotation throwsAnnotation =
            AnnotationUtils.makeThrows(exceptions);
        result = Annotations.combine(result, throwsAnnotation);
    }

    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the {@code Signature} attribute out of a given
 * {@link AttributeList}, if any, translating it to an annotation.
 *
 * @param attribs {@code non-null;} the attributes list to search in
 * @return {@code null-ok;} the converted {@code Signature} annotation,
 * if there was an attribute to translate
 */
private static Annotation getSignature(AttributeList attribs) {
    AttSignature signature = (AttSignature)
        attribs.findFirst(AttSignature.ATTRIBUTE_NAME);

    if (signature == null) {
        return null;
    }

    return AnnotationUtils.makeSignature(signature.getSignature());
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Gets the {@code AnnotationDefault} attributes out of a
 * given class, if any, reforming them as an
 * {@code AnnotationDefault} annotation.
 *
 * @param cf {@code non-null;} the class in question
 * @return {@code null-ok;} an appropriately-constructed
 * {@code AnnotationDefault} annotation, if there were any
 * annotation defaults in the class, or {@code null} if not
 */
private static Annotation translateAnnotationDefaults(DirectClassFile cf) {
    CstType thisClass = cf.getThisClass();
    MethodList methods = cf.getMethods();
    int sz = methods.size();
    Annotation result =
        new Annotation(thisClass, AnnotationVisibility.EMBEDDED);
    boolean any = false;

    for (int i = 0; i < sz; i++) {
        Method one = methods.get(i);
        AttributeList attribs = one.getAttributes();
        AttAnnotationDefault oneDefault = (AttAnnotationDefault)
            attribs.findFirst(AttAnnotationDefault.ATTRIBUTE_NAME);

        if (oneDefault != null) {
            NameValuePair pair = new NameValuePair(
                    one.getNat().getName(),
                    oneDefault.getValue());
            result.add(pair);
            any = true;
        }
    }

    if (! any) {
        return null;
    }

    result.setImmutable();
    return AnnotationUtils.makeAnnotationDefault(result);
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs an instance.
 *
 * @param annotations {@code non-null;} set of annotations
 * @param dexFile {@code non-null;} dex output
 */
public AnnotationSetItem(Annotations annotations, DexFile dexFile) {
    super(ALIGNMENT, writeSize(annotations));

    this.annotations = annotations;
    this.items = new AnnotationItem[annotations.size()];

    int at = 0;
    for (Annotation a : annotations.getAnnotations()) {
        items[at] = new AnnotationItem(a, dexFile);
        at++;
    }
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs a standard {@code AnnotationDefault} annotation.
 *
 * @param defaults {@code non-null;} the defaults, itself as an annotation
 * @return {@code non-null;} the constructed annotation
 */
public static Annotation makeAnnotationDefault(Annotation defaults) {
    Annotation result = new Annotation(ANNOTATION_DEFAULT_TYPE, SYSTEM);

    result.put(new NameValuePair(VALUE_STRING, new CstAnnotation(defaults)));
    result.setImmutable();
    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs a standard {@code EnclosingClass} annotation.
 *
 * @param clazz {@code non-null;} the enclosing class
 * @return {@code non-null;} the annotation
 */
public static Annotation makeEnclosingClass(CstType clazz) {
    Annotation result = new Annotation(ENCLOSING_CLASS_TYPE, SYSTEM);

    result.put(new NameValuePair(VALUE_STRING, clazz));
    result.setImmutable();
    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs a standard {@code EnclosingMethod} annotation.
 *
 * @param method {@code non-null;} the enclosing method
 * @return {@code non-null;} the annotation
 */
public static Annotation makeEnclosingMethod(CstMethodRef method) {
    Annotation result = new Annotation(ENCLOSING_METHOD_TYPE, SYSTEM);

    result.put(new NameValuePair(VALUE_STRING, method));
    result.setImmutable();
    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs a standard {@code InnerClass} annotation.
 *
 * @param name {@code null-ok;} the original name of the class, or
 * {@code null} to represent an anonymous class
 * @param accessFlags the original access flags
 * @return {@code non-null;} the annotation
 */
public static Annotation makeInnerClass(CstString name, int accessFlags) {
    Annotation result = new Annotation(INNER_CLASS_TYPE, SYSTEM);
    Constant nameCst = (name != null) ? name : CstKnownNull.THE_ONE;

    result.put(new NameValuePair(NAME_STRING, nameCst));
    result.put(new NameValuePair(ACCESS_FLAGS_STRING,
                    CstInteger.make(accessFlags)));
    result.setImmutable();
    return result;
}
 

import com.android.dx.rop.annotation.Annotation; //导入依赖的package包/类
/**
 * Constructs a standard {@code MemberClasses} annotation.
 *
 * @param types {@code non-null;} the list of (the types of) the member classes
 * @return {@code non-null;} the annotation
 */
public static Annotation makeMemberClasses(TypeList types) {
    CstArray array = makeCstArray(types);
    Annotation result = new Annotation(MEMBER_CLASSES_TYPE, SYSTEM);
    result.put(new NameValuePair(VALUE_STRING, array));
    result.setImmutable();
    return result;
}