/*
 * Copyright (c) 2007, 2008, 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;

import com.sun.tools.classfile.ConstantPool.*;

See JVMS, section 4.8.6.
 
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.
/**
 * See JVMS, section 4.8.6.
 *
 *  <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 class InnerClasses_attribute extends Attribute {
    InnerClasses_attribute(ClassReader cr, int name_index, int length) throws IOException {
        super(name_index, length);
        number_of_classes = cr.readUnsignedShort();
        classes = new Info[number_of_classes];
        for (int i = 0; i < number_of_classes; i++)
            classes[i] = new Info(cr);
    }

    public InnerClasses_attribute(ConstantPool constant_pool, Info[] classes)
            throws ConstantPoolException {
        this(constant_pool.getUTF8Index(Attribute.InnerClasses), classes);
    }

    public InnerClasses_attribute(int name_index, Info[] classes) {
        super(name_index, 2 + Info.length() * classes.length);
        this.number_of_classes = classes.length;
        this.classes = classes;
    }

    public <R, D> R accept(Visitor<R, D> visitor, D data) {
        return visitor.visitInnerClasses(this, data);
    }

    public final int number_of_classes;
    public final Info[] classes;

    public static class Info {
        Info(ClassReader cr) throws IOException {
            inner_class_info_index = cr.readUnsignedShort();
            outer_class_info_index = cr.readUnsignedShort();
            inner_name_index = cr.readUnsignedShort();
            inner_class_access_flags = new AccessFlags(cr.readUnsignedShort());
        }

        public Info(int inner_class_info_index, int outer_class_info_index, int inner_name_index, AccessFlags inner_class_access_flags) {
            this.inner_class_info_index = inner_class_info_index;
            this.outer_class_info_index = outer_class_info_index;
            this.inner_name_index = inner_name_index;
            this.inner_class_access_flags = inner_class_access_flags;
        }

        public CONSTANT_Class_info getInnerClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
            if (inner_class_info_index == 0)
                return null;
            return constant_pool.getClassInfo(inner_class_info_index);
        }

        public CONSTANT_Class_info getOuterClassInfo(ConstantPool constant_pool) throws ConstantPoolException {
            if (outer_class_info_index == 0)
                return null;
            return constant_pool.getClassInfo(outer_class_info_index);
        }

        public String getInnerName(ConstantPool constant_pool) throws ConstantPoolException {
            if (inner_name_index == 0)
                return null;
            return constant_pool.getUTF8Value(inner_name_index);
        }

        public static int length() {
            return 8;
        }

        public final int inner_class_info_index;
        public final int outer_class_info_index;
        public final int inner_name_index;
        public final AccessFlags inner_class_access_flags;
    }
}