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A library for unit-tests to check the dependencies between classes.

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package de.spricom.dessert.classfile.attribute;

/*-
 * #%L
 * Dessert Dependency Assertion Library for Java
 * %%
 * Copyright (C) 2017 - 2023 Hans Jörg Heßmann
 * %%
 * Licensed 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
 * 
 *      http://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.
 * #L%
 */
import de.spricom.dessert.classfile.constpool.ConstantPool;

import java.io.DataInputStream;
import java.io.IOException;

/**
 * Represents a
 * 
 * Java Virtual Machine Specification: 4.7.26. The ModulePackages Attribute.
 */
public class ModulePackagesAttribute extends AttributeInfo {

    private final String[] packageNames;

    public ModulePackagesAttribute(String name, DataInputStream is, ConstantPool constantPool) throws IOException {
        super(name);
        skipLength(is);
        packageNames = new String[is.readUnsignedShort()];
        for (int i = 0; i < packageNames.length; i++) {
            packageNames[i] = constantPool.getPackageName(is.readUnsignedShort());
        }
    }

    public String[] getPackageNames() {
        return packageNames;
    }

    @Override
    public String toString() {
        StringBuilder sb = new StringBuilder(getName()).append(":\n");
        for (String packageName : packageNames) {
            sb.append(packageName).append("\n");
        }
        return sb.toString();
    }
}