RuntimeTypeAnnotations_attribute.java

/*
 * Copyright (c) 2007, 2013, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
 * or visit www.oracle.com if you need additional information or have any
 * questions.
 */

package com.sun.tools.classfile;

import java.io.IOException;

/**
 * See JSR 308 specification, Section 3.
 *
 *  <p><b>This is NOT part of any supported API.
 *  If you write code that depends on this, you do so at your own risk.
 *  This code and its internal interfaces are subject to change or
 *  deletion without notice.</b>
 */
public abstract class RuntimeTypeAnnotations_attribute extends Attribute {
    protected RuntimeTypeAnnotations_attribute(ClassReader cr, int name_index, int length)
            throws IOException, Annotation.InvalidAnnotation {
        super(name_index, length);
        int num_annotations = cr.readUnsignedShort();
        annotations = new TypeAnnotation[num_annotations];
        for (int i = 0; i < annotations.length; i++)
            annotations[i] = new TypeAnnotation(cr);
    }

    protected RuntimeTypeAnnotations_attribute(int name_index, TypeAnnotation[] annotations) {
        super(name_index, length(annotations));
        this.annotations = annotations;
    }

    private static int length(TypeAnnotation[] annos) {
        int n = 2;
        for (TypeAnnotation anno: annos)
            n += anno.length();
        return n;
    }

    public final TypeAnnotation[] annotations;
}