1 /*
   2  * Copyright (c) 2015, 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.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package jdk.internal.misc;
  27 
  28 import java.lang.invoke.MethodType;
  29 import java.util.Map;
  30 
  31 public interface JavaLangInvokeAccess {
  32     /**
  33      * Create a new MemberName instance. Used by {@see StackFrameInfo}.
  34      */
  35     Object newMemberName();
  36 
  37     /**
  38      * Returns the name for the given MemberName. Used by {@see StackFrameInfo}.
  39      */
  40     String getName(Object mname);
  41 
  42     /**
  43      * Returns {@code true} if the given MemberName is a native method. Used by
  44      * {@see StackFrameInfo}.
  45      */
  46     boolean isNative(Object mname);
  47 
  48     /**
  49      * Returns a {@code byte[]} containing the bytecode for a class implementing
  50      * DirectMethodHandle of each pairwise combination of {@code MethodType} and
  51      * an {@code int} representing method type.  Used by
  52      * GenerateJLIClassesPlugin to generate such a class during the jlink phase.
  53      */
  54     byte[] generateDMHClassBytes(String className, MethodType[] methodTypes,
  55             int[] types);
  56 
  57     /**
  58      * Returns a {@code byte[]} containing the bytecode for a BoundMethodHandle
  59      * species class implementing the signature defined by {@code types}. Used
  60      * by GenerateBMHClassesPlugin to enable generation of such classes during
  61      * the jlink phase. Should do some added validation since this string may be
  62      * user provided.
  63      */
  64     Map.Entry<String, byte[]> generateConcreteBMHClassBytes(
  65             final String types);
  66 }