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/*
* ProGuard -- shrinking, optimization, obfuscation, and preverification
* of Java bytecode.
*
* Copyright (c) 2002-2013 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;
import proguard.classfile.VisitorAccepter;
/**
* Representation of an Exception table entry.
*
* @author Eric Lafortune
*/
public class ExceptionInfo implements VisitorAccepter
{
public int u2startPC;
public int u2endPC;
public int u2handlerPC;
public int u2catchType;
/**
* An extra field in which visitors can store information.
*/
public Object visitorInfo;
/**
* Creates an uninitialized ExceptionInfo.
*/
public ExceptionInfo()
{
this(0, 0, 0, 0);
}
/**
* Creates an ExceptionInfo with the given properties.
*/
public ExceptionInfo(int u2startPC,
int u2endPC,
int u2handlerPC,
int u2catchType)
{
this.u2startPC = u2startPC;
this.u2endPC = u2endPC;
this.u2handlerPC = u2handlerPC;
this.u2catchType = u2catchType;
}
/**
* Returns whether the exception's try block contains the instruction at the
* given offset.
*/
public boolean isApplicable(int instructionOffset)
{
return instructionOffset >= u2startPC &&
instructionOffset < u2endPC;
}
/**
* Returns whether the exception's try block overlaps with the specified
* block of instructions.
*/
public boolean isApplicable(int startOffset, int endOffset)
{
return u2startPC < endOffset &&
u2endPC > startOffset;
}
// Implementations for VisitorAccepter.
public Object getVisitorInfo()
{
return visitorInfo;
}
public void setVisitorInfo(Object visitorInfo)
{
this.visitorInfo = visitorInfo;
}
}
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