1 /*

     2  * Copyright (c) 2017, 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 package java.lang.invoke;

    26 

    27 /**

    28  * Bootstrap methods for dynamically-computed constant.

    29  */

    30 final class DynamicConstant {

    31     // implements the upcall from the JVM, MethodHandleNatives.linkDynamicConstant:

    32     /*non-public*/

    33     static Object makeConstant(MethodHandle bootstrapMethod,

    34                                // Callee information:

    35                                String name, Class<?> type,

    36                                // Extra arguments for BSM, if any:

    37                                Object info,

    38                                // Caller information:

    39                                Class<?> callerClass) {

    40         // BSMI.invoke handles all type checking and exception translation.

    41         // If type is not a reference type, the JVM is expecting a boxed

    42         // version, and will manage unboxing on the other side.

    43         return BootstrapMethodInvoker.invoke(

    44                 type, bootstrapMethod, name, type, info, callerClass);

    45     }

    46 }