1 /* 2 * Copyright (c) 2014, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 package com.oracle.graal.api.replacements; 25 26 /** 27 * Guards the installation of substitutions for {@link ClassSubstitution} and 28 * {@link MethodSubstitution}. 29 * <p> 30 * Implementor must have a single public constructor with one of the following signatures: 31 * <ul> 32 * <li><code>Guard(Architecture)</code> 33 * <li><code>Guard()</code> (an implicit constructor is OK as well) 34 * </ul> 35 */ 36 public interface SubstitutionGuard { 37 38 /** 39 * Return true if the substitution should be enabled. 40 */ 41 boolean execute(); 42 }