| /* |
| * Copyright (c) 2011, 2018, Oracle and/or its affiliates. All rights reserved. |
| * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| * |
| * This code is free software; you can redistribute it and/or modify it |
| * under the terms of the GNU General Public License version 2 only, as |
| * published by the Free Software Foundation. |
| * |
| * This code is distributed in the hope that it will be useful, but WITHOUT |
| * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or |
| * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License |
| * version 2 for more details (a copy is included in the LICENSE file that |
| * accompanied this code). |
| * |
| * You should have received a copy of the GNU General Public License version |
| * 2 along with this work; if not, write to the Free Software Foundation, |
| * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. |
| * |
| * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
| * or visit www.oracle.com if you need additional information or have any |
| * questions. |
| */ |
| |
| package vm.mlvm.meth.share.transform.v2; |
| |
| import java.lang.invoke.MethodHandle; |
| import java.lang.invoke.MethodHandles; |
| |
| import vm.mlvm.meth.share.Argument; |
| |
| // TODO: cover widening/narrowing conversions |
| public class MHConstantTF extends MHNullaryTF { |
| |
| protected final Argument retVal; |
| |
| public MHConstantTF(Argument retVal) { |
| this.retVal = retVal; |
| } |
| |
| @Override |
| protected void check() throws IllegalArgumentException { |
| } |
| |
| @Override |
| protected Argument computeRetVal() { |
| return this.retVal; |
| } |
| |
| @Override |
| protected Argument[] computeInboundArgs() { |
| return new Argument[0]; |
| } |
| |
| @Override |
| protected MethodHandle computeInboundMH() throws NoSuchMethodException, IllegalAccessException { |
| return MethodHandles.constant(retVal.getType(), retVal.getValue()); |
| } |
| |
| @Override |
| protected String getName() { |
| return "constant"; |
| } |
| |
| @Override |
| protected String getDescription() { |
| return "retVal=" + retVal; |
| } |
| |
| } |