1 /*
   2  * Copyright (c) 2015, 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.  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.access;
  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 {@code StackFrameInfo}.
  34      */
  35     Object newMemberName();
  36 
  37     /**
  38      * Returns the name for the given MemberName. Used by {@code StackFrameInfo}.
  39      */
  40     String getName(Object mname);
  41 
  42     /**
  43      * Returns the {@code MethodType} for the given MemberName.
  44      * Used by {@code StackFrameInfo}.
  45      */
  46     MethodType getMethodType(Object mname);
  47 
  48     /**
  49      * Returns the descriptor for the given MemberName.
  50      * Used by {@code StackFrameInfo}.
  51      */
  52     String getMethodDescriptor(Object mname);
  53 
  54     /**
  55      * Returns {@code true} if the given MemberName is a native method.
  56      * Used by {@code StackFrameInfo}.
  57      */
  58     boolean isNative(Object mname);
  59 
  60     /**
  61      * Returns the declaring class for the given MemberName.
  62      * Used by {@code StackFrameInfo}.
  63      */
  64     Class<?> getDeclaringClass(Object mname);
  65 
  66     /**
  67      * Returns a {@code byte[]} representation of a class implementing
  68      * DirectMethodHandle of each pairwise combination of {@code MethodType} and
  69      * an {@code int} representing method type.  Used by
  70      * GenerateJLIClassesPlugin to generate such a class during the jlink phase.
  71      */
  72     byte[] generateDirectMethodHandleHolderClassBytes(String className,
  73             MethodType[] methodTypes, int[] types);
  74 
  75     /**
  76      * Returns a {@code byte[]} representation of a class implementing
  77      * DelegatingMethodHandles of each {@code MethodType} kind in the
  78      * {@code methodTypes} argument.  Used by GenerateJLIClassesPlugin to
  79      * generate such a class during the jlink phase.
  80      */
  81     byte[] generateDelegatingMethodHandleHolderClassBytes(String className,
  82             MethodType[] methodTypes);
  83 
  84     /**
  85      * Returns a {@code byte[]} representation of {@code BoundMethodHandle}
  86      * species class implementing the signature defined by {@code types}. Used
  87      * by GenerateJLIClassesPlugin to enable generation of such classes during
  88      * the jlink phase. Should do some added validation since this string may be
  89      * user provided.
  90      */
  91     Map.Entry<String, byte[]> generateConcreteBMHClassBytes(
  92             final String types);
  93 
  94     /**
  95      * Returns a {@code byte[]} representation of a class implementing
  96      * the zero and identity forms of all {@code LambdaForm.BasicType}s.
  97      */
  98     byte[] generateBasicFormsClassBytes(final String className);
  99 
 100     /**
 101      * Returns a {@code byte[]} representation of a class implementing
 102      * the invoker forms for the set of supplied {@code invokerMethodTypes}
 103      * and {@code callSiteMethodTypes}.
 104      */
 105     byte[] generateInvokersHolderClassBytes(String className,
 106             MethodType[] invokerMethodTypes,
 107             MethodType[] callSiteMethodTypes);
 108 
 109 }