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/*
* 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.VerificationTypeVisitor;
/**
* This VerificationType represents a Uninitialized type.
*
* @author Eric Lafortune
*/
public class UninitializedType extends VerificationType
{
public int u2newInstructionOffset;
/**
* Creates an uninitialized UninitializedType.
*/
public UninitializedType()
{
}
/**
* Creates an UninitializedType pointing to the given 'new' instruction.
*/
public UninitializedType(int u2newInstructionOffset)
{
this.u2newInstructionOffset = u2newInstructionOffset;
}
// Implementations for VerificationType.
public int getTag()
{
return UNINITIALIZED_TYPE;
}
public void accept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, VerificationTypeVisitor verificationTypeVisitor)
{
verificationTypeVisitor.visitUninitializedType(clazz, method, codeAttribute, instructionOffset, this);
}
public void stackAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int stackIndex, VerificationTypeVisitor verificationTypeVisitor)
{
verificationTypeVisitor.visitStackUninitializedType(clazz, method, codeAttribute, instructionOffset, stackIndex, this);
}
public void variablesAccept(Clazz clazz, Method method, CodeAttribute codeAttribute, int instructionOffset, int variableIndex, VerificationTypeVisitor verificationTypeVisitor)
{
verificationTypeVisitor.visitVariablesUninitializedType(clazz, method, codeAttribute, instructionOffset, variableIndex, this);
}
// Implementations for Object.
public boolean equals(Object object)
{
if (!super.equals(object))
{
return false;
}
UninitializedType other = (UninitializedType)object;
return this.u2newInstructionOffset == other.u2newInstructionOffset;
}
public int hashCode()
{
return super.hashCode() ^
u2newInstructionOffset;
}
public String toString()
{
return "u:" + u2newInstructionOffset;
}
}
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