/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 *
 *   https://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */
package org.apache.commons.compress.harmony.unpack200.bytecode;

import java.io.DataOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

/**
 * Annotations class file attribute, either a RuntimeVisibleAnnotations attribute or a RuntimeInvisibleAnnotations attribute.
 */
public class RuntimeVisibleorInvisibleAnnotationsAttribute extends AnnotationsAttribute {

    private final Annotation[] annotations;

    /**
     * Constructs a new instance for an attribute name.
     *
     * @param name an attribute name.
     * @param annotations Annotations.
     */
    public RuntimeVisibleorInvisibleAnnotationsAttribute(final CPUTF8 name, final Annotation[] annotations) {
        super(name);
        this.annotations = annotations;
    }

    @Override
    protected int getLength() {
        int length = 2;
        for (final Annotation annotation : annotations) {
            length += annotation.getLength();
        }
        return length;
    }

    @Override
    protected ClassFileEntry[] getNestedClassFileEntries() {
        final List<Object> nested = new ArrayList<>();
        nested.add(attributeName);
        for (final Annotation annotation : annotations) {
            nested.addAll(annotation.getClassFileEntries());
        }
        return nested.toArray(NONE);
    }

    @Override
    protected void resolve(final ClassConstantPool pool) {
        super.resolve(pool);
        for (final Annotation annotation : annotations) {
            annotation.resolve(pool);
        }
    }

    @Override
    public String toString() {
        return attributeName.underlyingString() + ": " + annotations.length + " annotations";
    }

    @Override
    protected void writeBody(final DataOutputStream dos) throws IOException {
        final int size = dos.size();
        dos.writeShort(annotations.length);
        for (final Annotation annotation : annotations) {
            annotation.writeBody(dos);
        }
        if (dos.size() - size != getLength()) {
            throw new Error();
        }
    }
}
