001: /*
002: * Copyright (c) 2001-2007, Jean Tessier
003: * All rights reserved.
004: *
005: * Redistribution and use in source and binary forms, with or without
006: * modification, are permitted provided that the following conditions
007: * are met:
008: *
009: * * Redistributions of source code must retain the above copyright
010: * notice, this list of conditions and the following disclaimer.
011: *
012: * * Redistributions in binary form must reproduce the above copyright
013: * notice, this list of conditions and the following disclaimer in the
014: * documentation and/or other materials provided with the distribution.
015: *
016: * * Neither the name of Jean Tessier nor the names of his contributors
017: * may be used to endorse or promote products derived from this software
018: * without specific prior written permission.
019: *
020: * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
021: * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
022: * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
023: * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR
024: * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
025: * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
026: * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
027: * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
028: * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
029: * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
030: * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
031: */
032:
033: package com.jeantessier.classreader;
034:
035: import java.io.*;
036:
037: import org.apache.log4j.*;
038:
039: public class ExceptionHandler implements Visitable {
040: private Code_attribute code;
041: private int startPC;
042: private int endPC;
043: private int handlerPC;
044: private int catchTypeIndex;
045:
046: public ExceptionHandler(Code_attribute code, DataInputStream in)
047: throws IOException {
048: this .code = code;
049:
050: startPC = in.readUnsignedShort();
051: Logger.getLogger(getClass()).debug("start PC: " + startPC);
052:
053: endPC = in.readUnsignedShort();
054: Logger.getLogger(getClass()).debug("end PC: " + endPC);
055:
056: handlerPC = in.readUnsignedShort();
057: Logger.getLogger(getClass()).debug("handler PC: " + handlerPC);
058:
059: catchTypeIndex = in.readUnsignedShort();
060: Logger.getLogger(getClass()).debug(
061: "catch type index: " + catchTypeIndex + " ("
062: + getCatchType() + ")");
063: }
064:
065: public Code_attribute getCode() {
066: return code;
067: }
068:
069: public int getStartPC() {
070: return startPC;
071: }
072:
073: public int getEndPC() {
074: return endPC;
075: }
076:
077: public int getHandlerPC() {
078: return handlerPC;
079: }
080:
081: public int getCatchTypeIndex() {
082: return catchTypeIndex;
083: }
084:
085: public Class_info getRawCatchType() {
086: return (Class_info) code.getClassfile().getConstantPool().get(
087: getCatchTypeIndex());
088: }
089:
090: public String getCatchType() {
091: String result = "<none>";
092:
093: if (getCatchTypeIndex() != 0) {
094: result = getRawCatchType().toString();
095: }
096:
097: return result;
098: }
099:
100: public String toString() {
101: return "ExceptionHandler for " + getCatchType();
102: }
103:
104: public void accept(Visitor visitor) {
105: visitor.visitExceptionHandler(this);
106: }
107: }
|