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.lang.reflect.Method;
  30 import java.util.Map;
  31 
  32 public interface JavaLangInvokeAccess {
  33     /**
  34      * Create a new MemberName instance. Used by {@code StackFrameInfo}.
  35      */
  36     Object newMemberName();
  37 
  38     /**
  39      * Create a new MemberName instance. Used by {@code StackFrameInfo}.
  40      */
  41     Object newMemberName(Method method);
  42 
  43     /**
  44      * Returns the name for the given MemberName. Used by {@code StackFrameInfo}.
  45      */
  46     String getName(Object mname);
  47 
  48     /**
  49      * Returns the {@code MethodType} for the given MemberName.
  50      * Used by {@code StackFrameInfo}.
  51      */
  52     MethodType getMethodType(Object mname);
  53 
  54     /**
  55      * Returns the descriptor for the given MemberName.
  56      * Used by {@code StackFrameInfo}.
  57      */
  58     String getMethodDescriptor(Object mname);
  59 
  60     /**
  61      * Returns {@code true} if the given MemberName is a native method.
  62      * Used by {@code StackFrameInfo}.
  63      */
  64     boolean isNative(Object mname);
  65 
  66     /**
  67      * Returns the declaring class for the given MemberName.
  68      * Used by {@code StackFrameInfo}.
  69      */
  70     Class<?> getDeclaringClass(Object mname);
  71 
  72     /**
  73      * Returns a {@code byte[]} representation of a class implementing
  74      * DirectMethodHandle of each pairwise combination of {@code MethodType} and
  75      * an {@code int} representing method type.  Used by
  76      * GenerateJLIClassesPlugin to generate such a class during the jlink phase.
  77      */
  78     byte[] generateDirectMethodHandleHolderClassBytes(String className,
  79             MethodType[] methodTypes, int[] types);
  80 
  81     /**
  82      * Returns a {@code byte[]} representation of a class implementing
  83      * DelegatingMethodHandles of each {@code MethodType} kind in the
  84      * {@code methodTypes} argument.  Used by GenerateJLIClassesPlugin to
  85      * generate such a class during the jlink phase.
  86      */
  87     byte[] generateDelegatingMethodHandleHolderClassBytes(String className,
  88             MethodType[] methodTypes);
  89 
  90     /**
  91      * Returns a {@code byte[]} representation of {@code BoundMethodHandle}
  92      * species class implementing the signature defined by {@code types}. Used
  93      * by GenerateJLIClassesPlugin to enable generation of such classes during
  94      * the jlink phase. Should do some added validation since this string may be
  95      * user provided.
  96      */
  97     Map.Entry<String, byte[]> generateConcreteBMHClassBytes(
  98             final String types);
  99 
 100     /**
 101      * Returns a {@code byte[]} representation of a class implementing
 102      * the zero and identity forms of all {@code LambdaForm.BasicType}s.
 103      */
 104     byte[] generateBasicFormsClassBytes(final String className);
 105 
 106     /**
 107      * Returns a {@code byte[]} representation of a class implementing
 108      * the invoker forms for the set of supplied {@code invokerMethodTypes}
 109      * and {@code callSiteMethodTypes}.
 110      */
 111     byte[] generateInvokersHolderClassBytes(String className,
 112             MethodType[] invokerMethodTypes,
 113             MethodType[] callSiteMethodTypes);
 114 
 115 }