001/* 002 * BridJ - Dynamic and blazing-fast native interop for Java. 003 * http://bridj.googlecode.com/ 004 * 005 * Copyright (c) 2010-2013, Olivier Chafik (http://ochafik.com/) 006 * All rights reserved. 007 * 008 * Redistribution and use in source and binary forms, with or without 009 * modification, are permitted provided that the following conditions are met: 010 * 011 * * Redistributions of source code must retain the above copyright 012 * notice, this list of conditions and the following disclaimer. 013 * * Redistributions in binary form must reproduce the above copyright 014 * notice, this list of conditions and the following disclaimer in the 015 * documentation and/or other materials provided with the distribution. 016 * * Neither the name of Olivier Chafik nor the 017 * names of its contributors may be used to endorse or promote products 018 * derived from this software without specific prior written permission. 019 * 020 * THIS SOFTWARE IS PROVIDED BY OLIVIER CHAFIK AND CONTRIBUTORS ``AS IS'' AND ANY 021 * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED 022 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE 023 * DISCLAIMED. IN NO EVENT SHALL THE REGENTS AND CONTRIBUTORS BE LIABLE FOR ANY 024 * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES 025 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; 026 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND 027 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT 028 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS 029 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. 030 */ 031package org.bridj.ann; 032 033import java.lang.annotation.ElementType; 034import java.lang.annotation.Retention; 035import java.lang.annotation.RetentionPolicy; 036import java.lang.annotation.Target; 037 038/** 039 * Mark a C++ method as virtual and specify its position in the virtual 040 * table.<br> 041 * The virtual table offset is optional but strongly recommended (will fail in 042 * many cases without it).<br> 043 * This position is relative to the struct's declared class, not to the parent 044 * structures/classes (unlike {@link Field}, which index is absolute). 045 * 046 * @author ochafik 047 */ 048@Retention(RetentionPolicy.RUNTIME) 049@Target(ElementType.METHOD) 050public @interface Virtual { 051 052 /** 053 * Optional relative virtual table offset for the C++ method (starts at 0 054 * for each C++ class, even if it has ancestors with virtual methods) 055 */ 056 int value() default -1; 057}