src/java.base/share/classes/java/lang/invoke/DynamicConstant.java
author psandoz
Fri, 08 Sep 2017 10:46:46 -0700
changeset 48826 c4d9d1b08e2e
permissions -rw-r--r--
8186209: Tool support for ConstantDynamic 8186046: Minimal ConstantDynamic support 8190972: Ensure that AOT/Graal filters out class files containing CONSTANT_Dynamic ahead of full AOT support Reviewed-by: acorn, coleenp, kvn Contributed-by: lois.foltan@oracle.com, john.r.rose@oracle.com, paul.sandoz@oracle.com

/*
 * Copyright (c) 2017, Oracle and/or its affiliates. All rights reserved.
 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
 *
 * This code is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License version 2 only, as
 * published by the Free Software Foundation.  Oracle designates this
 * particular file as subject to the "Classpath" exception as provided
 * by Oracle in the LICENSE file that accompanied this code.
 *
 * This code is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
 * version 2 for more details (a copy is included in the LICENSE file that
 * accompanied this code).
 *
 * You should have received a copy of the GNU General Public License version
 * 2 along with this work; if not, write to the Free Software Foundation,
 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
 *
 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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package java.lang.invoke;

/**
 * Bootstrap methods for dynamically-computed constant.
 */
final class DynamicConstant {
    // implements the upcall from the JVM, MethodHandleNatives.linkDynamicConstant:
    /*non-public*/
    static Object makeConstant(MethodHandle bootstrapMethod,
                               // Callee information:
                               String name, Class<?> type,
                               // Extra arguments for BSM, if any:
                               Object info,
                               // Caller information:
                               Class<?> callerClass) {
        // BSMI.invoke handles all type checking and exception translation.
        // If type is not a reference type, the JVM is expecting a boxed
        // version, and will manage unboxing on the other side.
        return BootstrapMethodInvoker.invoke(
                type, bootstrapMethod, name, type, info, callerClass);
    }
}