72 lines
2.1 KiB
Java
72 lines
2.1 KiB
Java
/*******************************************************************************
|
|
* Copyright (c) 2002,2006 IBM Corporation.
|
|
* All rights reserved. This program and the accompanying materials
|
|
* are made available under the terms of the Eclipse Public License v1.0
|
|
* which accompanies this distribution, and is available at
|
|
* http://www.eclipse.org/legal/epl-v10.html
|
|
*
|
|
* Contributors:
|
|
* IBM Corporation - initial API and implementation
|
|
*******************************************************************************/
|
|
package com.ibm.wala.shrikeCT;
|
|
|
|
/**
|
|
* This class builds serializable Exceptions attributes.
|
|
*/
|
|
public final class ExceptionsWriter extends ClassWriter.Element {
|
|
final private int attrID;
|
|
|
|
private int[] table;
|
|
|
|
/**
|
|
* Build an empty writer.
|
|
*
|
|
* @throws IllegalArgumentException if w is null
|
|
*/
|
|
public ExceptionsWriter(ClassWriter w) {
|
|
if (w == null) {
|
|
throw new IllegalArgumentException("w is null");
|
|
}
|
|
attrID = w.addCPUtf8("Exceptions");
|
|
}
|
|
|
|
@Override
|
|
public int getSize() {
|
|
return table == null ? 8 : 8 + table.length * 2;
|
|
}
|
|
|
|
@Override
|
|
public int copyInto(byte[] buf, int offset) throws IllegalArgumentException {
|
|
ClassWriter.setUShort(buf, offset, attrID);
|
|
ClassWriter.setInt(buf, offset + 2, getSize() - 6);
|
|
ClassWriter.setUShort(buf, offset + 6, table == null ? 0 : table.length);
|
|
offset += 8;
|
|
if (table != null) {
|
|
for (int i = 0; i < table.length; i++) {
|
|
ClassWriter.setUShort(buf, offset, table[i]);
|
|
offset += 2;
|
|
}
|
|
}
|
|
return offset;
|
|
}
|
|
|
|
/**
|
|
* Set the list of exceptions that can be thrown.
|
|
*
|
|
* @param exceptions an array of indices to constant pool Class entries
|
|
* @throws IllegalArgumentException if exceptions is null
|
|
*/
|
|
public void setRawTable(int[] exceptions) {
|
|
if (exceptions == null) {
|
|
throw new IllegalArgumentException("exceptions is null");
|
|
}
|
|
for (int i = 0; i < exceptions.length; i++) {
|
|
if (exceptions[i] < 1 || exceptions[i] > 0xFFFF) {
|
|
throw new IllegalArgumentException("Invalid CP index: " + exceptions[i]);
|
|
}
|
|
}
|
|
|
|
this.table = exceptions;
|
|
}
|
|
}
|