Mercurial > hg > blitz_stable
diff src/com/go/trove/classfile/ExceptionsAttr.java @ 0:3dc0c5604566
Initial checkin of blitz 2.0 fcs - no installer yet.
author | Dan Creswell <dan.creswell@gmail.com> |
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date | Sat, 21 Mar 2009 11:00:06 +0000 |
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--- /dev/null Thu Jan 01 00:00:00 1970 +0000 +++ b/src/com/go/trove/classfile/ExceptionsAttr.java Sat Mar 21 11:00:06 2009 +0000 @@ -0,0 +1,124 @@ +/* ==================================================================== + * Trove - Copyright (c) 1997-2000 Walt Disney Internet Group + * ==================================================================== + * The Tea Software License, Version 1.1 + * + * Copyright (c) 2000 Walt Disney Internet Group. All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * + * 3. The end-user documentation included with the redistribution, + * if any, must include the following acknowledgment: + * "This product includes software developed by the + * Walt Disney Internet Group (http://opensource.go.com/)." + * Alternately, this acknowledgment may appear in the software itself, + * if and wherever such third-party acknowledgments normally appear. + * + * 4. The names "Tea", "TeaServlet", "Kettle", "Trove" and "BeanDoc" must + * not be used to endorse or promote products derived from this + * software without prior written permission. For written + * permission, please contact opensource@dig.com. + * + * 5. Products derived from this software may not be called "Tea", + * "TeaServlet", "Kettle" or "Trove", nor may "Tea", "TeaServlet", + * "Kettle", "Trove" or "BeanDoc" appear in their name, without prior + * written permission of the Walt Disney Internet Group. + * + * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED + * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES + * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE + * DISCLAIMED. IN NO EVENT SHALL THE WALT DISNEY INTERNET GROUP OR ITS + * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, + * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, + * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR + * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY + * OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * ==================================================================== + * + * For more information about Tea, please see http://opensource.go.com/. + */ + +package com.go.trove.classfile; + +import java.util.*; +import java.io.*; + +/****************************************************************************** + * This class corresponds to the Exceptions_attribute structure as defined in + * section 4.7.5 of <i>The Java Virtual Machine Specification</i>. + * + * @author Brian S O'Neill + * @version + * <!--$$Revision: 1.1 $-->, <!--$$JustDate:--> 00/11/27 <!-- $--> + */ +class ExceptionsAttr extends Attribute { + private List mExceptions = new ArrayList(2); + + public ExceptionsAttr(ConstantPool cp) { + super(cp, EXCEPTIONS); + } + + public String[] getExceptions() { + int size = mExceptions.size(); + String[] names = new String[size]; + + for (int i=0; i<size; i++) { + names[i] = ((ConstantClassInfo)mExceptions.get(i)).getClassName(); + } + + return names; + } + + public void addException(ConstantClassInfo type) { + mExceptions.add(type); + } + + public int getLength() { + return 2 + 2 * mExceptions.size(); + } + + public void writeDataTo(DataOutput dout) throws IOException { + int size = mExceptions.size(); + dout.writeShort(size); + for (int i=0; i<size; i++) { + ConstantClassInfo info = (ConstantClassInfo)mExceptions.get(i); + dout.writeShort(info.getIndex()); + } + } + + static Attribute define(ConstantPool cp, + String name, + int length, + DataInput din) throws IOException { + + ExceptionsAttr attr = new ExceptionsAttr(cp); + + int size = din.readUnsignedShort(); + length -= 2; + + for (int i=0; i<size; i++) { + int index = din.readUnsignedShort(); + length -= 2; + ConstantClassInfo info = (ConstantClassInfo)cp.getConstant(index); + attr.addException(info); + } + + if (length > 0) { + din.skipBytes(length); + } + + return attr; + } +}