| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2017 Eric Lafortune @ GuardSquare |
| * |
| * This program is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License as published by the Free |
| * Software Foundation; either version 2 of the License, or (at your option) |
| * any later version. |
| * |
| * This program 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 for |
| * more details. |
| * |
| * You should have received a copy of the GNU General Public License along |
| * with this program; if not, write to the Free Software Foundation, Inc., |
| * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| */ |
| package proguard.classfile.attribute; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.attribute.visitor.AttributeVisitor; |
| import proguard.classfile.visitor.ClassVisitor; |
| |
| /** |
| * This Attribute represents a signature attribute. |
| * |
| * @author Eric Lafortune |
| */ |
| public class SignatureAttribute extends Attribute |
| { |
| public int u2signatureIndex; |
| |
| /** |
| * An extra field containing all the classes referenced in the |
| * signature string. This field is filled out by the {@link |
| * proguard.classfile.util.ClassReferenceInitializer ClassReferenceInitializer}. |
| * The size of the array is the number of classes in the signature. |
| * Primitive types and arrays of primitive types are ignored. |
| * Unknown classes are represented as null values. |
| */ |
| public Clazz[] referencedClasses; |
| |
| |
| /** |
| * Creates an uninitialized SignatureAttribute. |
| */ |
| public SignatureAttribute() |
| { |
| } |
| |
| |
| /** |
| * Creates an initialized SignatureAttribute. |
| */ |
| public SignatureAttribute(int u2attributeNameIndex, |
| int u2signatureIndex) |
| { |
| super(u2attributeNameIndex); |
| |
| this.u2signatureIndex = u2signatureIndex; |
| } |
| |
| |
| /** |
| * Returns the signature. |
| */ |
| public String getSignature(Clazz clazz) |
| { |
| return clazz.getString(u2signatureIndex); |
| } |
| |
| |
| /** |
| * Lets the Clazz objects referenced in the signature string accept the |
| * given visitor. |
| */ |
| public void referencedClassesAccept(ClassVisitor classVisitor) |
| { |
| if (referencedClasses != null) |
| { |
| for (int index = 0; index < referencedClasses.length; index++) |
| { |
| if (referencedClasses[index] != null) |
| { |
| referencedClasses[index].accept(classVisitor); |
| } |
| } |
| } |
| } |
| |
| |
| // Implementations for Attribute. |
| |
| public void accept(Clazz clazz, AttributeVisitor attributeVisitor) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, this); |
| } |
| |
| public void accept(Clazz clazz, Field field, AttributeVisitor attributeVisitor) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, field, this); |
| } |
| |
| public void accept(Clazz clazz, Method method, AttributeVisitor attributeVisitor) |
| { |
| attributeVisitor.visitSignatureAttribute(clazz, method, this); |
| } |
| } |