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.reflect.Array;
  27 
  28 import vm.mlvm.meth.share.Argument;
  29 
  30 public class MHArrayEnvelopeTFPair extends MHEnvelopeArgTFPair {
  31 
  32     public MHArrayEnvelopeTFPair(MHCall outboundTarget, int argNum, int arrayIdx, int arraySize) {
  33         super(outboundTarget,
  34               "ArrayGetSet_" + outboundTarget.hashCode(),
  35               argNum,
  36               getLocatorArg(arrayIdx),
  37               getEnvelopeArg(outboundTarget.getArgs()[argNum], arrayIdx, arraySize));
  38 
  39         if ( arrayIdx > arraySize )
  40             throw new IllegalArgumentException("Array index [" + arrayIdx + "] should be less than array size [" + arraySize + "]");
  41     }
  42 
  43     private static Argument getLocatorArg(int arrayIdx) {
  44         return new Argument(int.class, arrayIdx);
  45     }
  46 
  47     private static Argument getEnvelopeArg(Argument componentArg, int arrayIdx, int arraySize) {
  48         Object array = Array.newInstance(componentArg.getType(), arraySize);
  49         Array.set(array, arrayIdx, componentArg.getValue());
  50         return new Argument(array.getClass(), array);
  51     }
  52 
  53     @Override
  54     protected MHTF computeGetTF(Argument envelopeArg, Argument envelopeLocatorArg) {
  55         return new MHArrayGetElemTF(envelopeArg, envelopeLocatorArg);
  56     }
  57 
  58     @Override
  59     protected MHTF computeSetTF(Argument envelopeArg, Argument envelopeLocatorArg, Argument componentArg) {
  60         return new MHArraySetElemTF(envelopeArg, envelopeLocatorArg, componentArg);
  61     }
  62 
  63 }