| /******************************************************************************* |
| * 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.IRequiresInfo; |
| |
| public class RequiresInfo extends ClassFileStruct implements IRequiresInfo { |
| |
| private int index; |
| private char[] moduleName; |
| private int flags; |
| private int versionIndex; |
| private char[] versionName; |
| |
| public RequiresInfo(byte[] classFileBytes, IConstantPool constantPool, int offset) throws ClassFormatException{ |
| int readOffset = 0; |
| this.index = u2At(classFileBytes, readOffset, offset); |
| readOffset += 2; |
| IConstantPoolEntry constantPoolEntry = constantPool.decodeEntry(this.index); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Module) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| this.moduleName = ((IConstantPoolEntry3) constantPoolEntry).getModuleName(); |
| this.flags = u2At(classFileBytes, readOffset, offset); |
| readOffset += 2; |
| this.versionIndex = u2At(classFileBytes, readOffset, offset); |
| readOffset += 2; |
| if (this.versionIndex != 0) { |
| constantPoolEntry = constantPool.decodeEntry(this.versionIndex); |
| if (constantPoolEntry.getKind() != IConstantPoolConstant.CONSTANT_Utf8) { |
| throw new ClassFormatException(ClassFormatException.INVALID_CONSTANT_POOL_ENTRY); |
| } |
| this.versionName = constantPoolEntry.getUtf8Value(); |
| } else { |
| this.versionName = CharOperation.NO_CHAR; |
| } |
| } |
| @Override |
| public int getRequiresIndex() { |
| return this.index; |
| } |
| |
| @Override |
| public char[] getRequiresModuleName() { |
| return this.moduleName; |
| } |
| |
| @Override |
| public int getRequiresFlags() { |
| return this.flags; |
| } |
| |
| @Override |
| public int getRequiresVersionIndex() { |
| return this.versionIndex; |
| } |
| |
| @Override |
| public char[] getRequiresVersionValue() { |
| return this.versionName; |
| } |
| |
| } |