| /* |
| * ProGuard -- shrinking, optimization, obfuscation, and preverification |
| * of Java bytecode. |
| * |
| * Copyright (c) 2002-2011 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; |
| } |
| } |