| /******************************************************************************* |
| * Copyright (c) 2017 IBM Corporation and others. |
| * |
| * This program and the accompanying materials |
| * are made available under the terms of the Eclipse Public License 2.0 |
| * which accompanies this distribution, and is available at |
| * https://www.eclipse.org/legal/epl-2.0/ |
| * |
| * SPDX-License-Identifier: EPL-2.0 |
| * |
| * Contributors: |
| * IBM Corporation - initial API and implementation |
| *******************************************************************************/ |
| package org.eclipse.jdt.internal.core.util; |
| |
| import org.eclipse.jdt.core.compiler.CharOperation; |
| import org.eclipse.jdt.core.util.ClassFormatException; |
| import org.eclipse.jdt.core.util.IConstantPool; |
| import org.eclipse.jdt.core.util.IConstantPoolConstant; |
| import org.eclipse.jdt.core.util.IConstantPoolEntry; |
| import org.eclipse.jdt.core.util.IConstantPoolEntry3; |
| import org.eclipse.jdt.core.util.IModulePackagesAttribute; |
| |
| /** |
| * Default implementation of IModulePackagesAttribute |
| */ |
| public class ModulePackagesAttribute extends ClassFileAttribute implements IModulePackagesAttribute { |
| |
| private int packagesCount; |
| private int[] packageIndices; |
| private char[][] packageNames; |
| |
| /** |
| * Constructor for ModulePackagesAttribute. |
| * @param classFileBytes |
| * @param constantPool |
| * @param offset |
| * @throws ClassFormatException |
| */ |
| public ModulePackagesAttribute( byte[] classFileBytes, IConstantPool constantPool, int offset) throws ClassFormatException { |
| super(classFileBytes, constantPool, offset); |
| int readOffset = 6; |
| final int length = u2At(classFileBytes, readOffset, offset); |
| readOffset += 2; |
| this.packagesCount = length; |
| if (length != 0) { |
| this.packageIndices = new int[length]; |
| this.packageNames = new char[length][0]; |
| for (int i = 0; i < length; i++) { |
| this.packageIndices[i] = u2At(classFileBytes, readOffset, offset); |
| readOffset += 2; |
| IConstantPoolEntry constantPoolEntry = constantPool.decodeEntry(this.packageIndices[i]); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Package) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| char[] name = ((IConstantPoolEntry3) constantPoolEntry).getPackageName(); |
| this.packageNames[i] = name != null ? name : CharOperation.NO_CHAR; |
| |
| } |
| } else { |
| this.packageNames = CharOperation.NO_CHAR_CHAR; |
| } |
| } |
| |
| @Override |
| public int getPackagesCount() { |
| return this.packagesCount; |
| } |
| |
| @Override |
| public int[] getPackageIndices() { |
| return this.packageIndices; |
| } |
| |
| @Override |
| public char[][] getPackageNames() { |
| return this.packageNames; |
| } |
| } |