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 import vm.mlvm.meth.share.MHUtils; 35 36 public class MHInsertTF extends MHInsertOrDropTF { 37 38 protected final boolean _canDropProtected; 39 40 public MHInsertTF(MHCall target, int pos, Argument[] values, boolean canDropProtected) { 41 super(target, pos, values); 42 _canDropProtected = canDropProtected; 43 } 44 45 @Override 46 protected void check(Argument[] targetArgs) throws IllegalArgumentException { 47 super.check(targetArgs); 48 49 for (int i = this.pos; i < Math.min(targetArgs.length, this.pos + this.values.length); i++) { 50 if ( ! _canDropProtected && targetArgs[i].isPreserved() ) { 51 throw new WrongMethodTypeException("Dropping a protected argument #" + i 52 + ": " + targetArgs[i]); 53 54 } 55 56 MHUtils.assertAssignableType("argument " + i, targetArgs[i].getType(), this.values[i - this.pos].getType()); 57 } 58 } 59 60 @Override 61 protected Argument[] computeInboundArgs(Argument[] targetArgs) { 62 return TestUtils.concatArrays( 63 Arrays.copyOfRange(targetArgs, 0, this.pos), 64 Arrays.copyOfRange(targetArgs, this.pos + this.values.length, targetArgs.length)); 65 } 66 67 @Override 68 protected MethodHandle computeInboundMH(MethodHandle targetMH) { 69 return MethodHandles.insertArguments(targetMH, this.pos, Arguments.valuesArray(this.values)); 70 } 71 72 @Override 73 protected String getName() { 74 return "insertArguments"; 75 } 76 77 }