| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2014 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.*; |
| |
| /** |
| * This StackMapFrame represents an "append frame". |
| * |
| * @author Eric Lafortune |
| */ |
| public class MoreZeroFrame extends StackMapFrame |
| { |
| public int additionalVariablesCount; |
| public VerificationType[] additionalVariables; |
| |
| |
| /** |
| * Creates an uninitialized MoreZeroFrame. |
| */ |
| public MoreZeroFrame() |
| { |
| } |
| |
| |
| /** |
| * Creates a MoreZeroFrame with the given tag. |
| */ |
| public MoreZeroFrame(int tag) |
| { |
| additionalVariablesCount = tag + 1 - MORE_ZERO_FRAME; |
| } |
| |
| |
| /** |
| * Creates a MoreZeroFrame with the given additional variables. |
| */ |
| public MoreZeroFrame(VerificationType[] additionalVariables) |
| { |
| this(additionalVariables.length, additionalVariables); |
| } |
| |
| |
| /** |
| * Creates a MoreZeroFrame with the given additional variables. |
| */ |
| public MoreZeroFrame(int additionalVariablesCount, |
| VerificationType[] additionalVariables) |
| { |
| this.additionalVariablesCount = additionalVariablesCount; |
| this.additionalVariables = additionalVariables; |
| } |
| |
| |
| /** |
| * Applies the given verification type visitor to all variables. |
| */ |
| public void additionalVariablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, VerificationTypeVisitor verificationTypeVisitor) |
| { |
| for (int index = 0; index < additionalVariablesCount; index++) |
| { |
| additionalVariables[index].accept(clazz, method, codeAttribute, offset, verificationTypeVisitor); |
| } |
| } |
| |
| |
| // Implementations for StackMapFrame. |
| |
| public int getTag() |
| { |
| return MORE_ZERO_FRAME + additionalVariablesCount - 1; |
| } |
| |
| |
| public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int offset, StackMapFrameVisitor stackMapFrameVisitor) |
| { |
| stackMapFrameVisitor.visitMoreZeroFrame(clazz, method, codeAttribute, offset, this); |
| } |
| |
| |
| // Implementations for Object. |
| |
| public boolean equals(Object object) |
| { |
| if (!super.equals(object)) |
| { |
| return false; |
| } |
| |
| MoreZeroFrame other = (MoreZeroFrame)object; |
| |
| if (this.u2offsetDelta != other.u2offsetDelta || |
| this.additionalVariablesCount != other.additionalVariablesCount) |
| { |
| return false; |
| } |
| |
| for (int index = 0; index < additionalVariablesCount; index++) |
| { |
| VerificationType thisType = this.additionalVariables[index]; |
| VerificationType otherType = other.additionalVariables[index]; |
| |
| if (!thisType.equals(otherType)) |
| { |
| return false; |
| } |
| } |
| |
| return true; |
| } |
| |
| |
| public int hashCode() |
| { |
| int hashCode = super.hashCode(); |
| |
| for (int index = 0; index < additionalVariablesCount; index++) |
| { |
| hashCode ^= additionalVariables[index].hashCode(); |
| } |
| |
| return hashCode; |
| } |
| |
| |
| public String toString() |
| { |
| StringBuffer buffer = new StringBuffer(super.toString()).append("Var: ..."); |
| |
| for (int index = 0; index < additionalVariablesCount; index++) |
| { |
| buffer = buffer.append('[') |
| .append(additionalVariables[index].toString()) |
| .append(']'); |
| } |
| |
| buffer.append(", Stack: (empty)"); |
| |
| return buffer.toString(); |
| } |
| } |