| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2009 Eric Lafortune (eric@graphics.cornell.edu) |
| * |
| * 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.preverification; |
| |
| import proguard.classfile.*; |
| import proguard.classfile.attribute.CodeAttribute; |
| import proguard.classfile.attribute.preverification.visitor.StackMapFrameVisitor; |
| |
| /** |
| * This StackMapFrame represents a "same frame" or a "same frame extended". |
| * |
| * @author Eric Lafortune |
| * @noinspection PointlessArithmeticExpression |
| */ |
| public class SameZeroFrame extends StackMapFrame |
| { |
| /** |
| * Creates an uninitialized SameZeroFrame. |
| */ |
| public SameZeroFrame() |
| { |
| } |
| |
| |
| /** |
| * Creates a SameZeroFrame with the given tag. |
| */ |
| public SameZeroFrame(int tag) |
| { |
| u2offsetDelta = tag - SAME_ZERO_FRAME; |
| } |
| |
| |
| // Implementations for StackMapFrame. |
| |
| public int getTag() |
| { |
| return u2offsetDelta < 64 ? |
| SAME_ZERO_FRAME + u2offsetDelta : |
| SAME_ZERO_FRAME_EXTENDED; |
| } |
| |
| |
| public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor) |
| { |
| stackMapFrameVisitor.visitSameZeroFrame(clazz, method, codeAttribute, offset, this); |
| } |
| |
| |
| // Implementations for Object. |
| |
| public String toString() |
| { |
| return super.toString()+"Var: ..., Stack: (empty)"; |
| } |
| } |