1 /* 2 * Copyright (c) 2011, 2018, 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 vm.mlvm.meth.share.transform.v2; 25 26 import java.lang.invoke.MethodHandle; 27 import java.lang.invoke.MethodHandles; 28 import java.lang.invoke.WrongMethodTypeException; 29 import java.util.Arrays; 30 31 import nsk.share.test.TestUtils; 32 import vm.mlvm.meth.share.Argument; 33 import vm.mlvm.meth.share.Arguments; 34 35 public class MHDropTF extends MHInsertOrDropTF { 36 37 public MHDropTF(MHCall target, int pos, Argument[] values) { 38 super(target, pos, values); 39 } 40 41 @Override 42 protected void check() { 43 int argCount = target.getArgs().length; 44 if ( pos > argCount ) 45 throw new WrongMethodTypeException("position " + pos + " is invalid. Target has only " + argCount + " arguments"); 46 } 47 48 @Override 49 protected Argument[] computeInboundArgs(Argument[] targetArgs) { 50 return TestUtils.concatArrays( 51 Arrays.copyOfRange(targetArgs, 0, this.pos), 52 this.values, 53 Arrays.copyOfRange(targetArgs, this.pos, targetArgs.length)); 54 } 55 56 @Override 57 protected MethodHandle computeInboundMH(MethodHandle targetMH) { 58 return MethodHandles.dropArguments(targetMH, this.pos, Arguments.typesArray(this.values)); 59 } 60 61 @Override 62 protected String getName() { 63 return "dropArguments"; 64 } 65 }