rt/emul/mini/src/main/java/org/apidesign/vm4brwsr/api/VM.java
author Jaroslav Tulach <jaroslav.tulach@apidesign.org>
Tue, 17 Jan 2017 07:04:06 +0100
changeset 1985 cd1cc103a03c
parent 1373 c4e57ec5f0df
permissions -rw-r--r--
Implementation of ClassValue for bck2brwsr
     1 /**
     2  * Back 2 Browser Bytecode Translator
     3  * Copyright (C) 2012 Jaroslav Tulach <jaroslav.tulach@apidesign.org>
     4  *
     5  * This program is free software: you can redistribute it and/or modify
     6  * it under the terms of the GNU General Public License as published by
     7  * the Free Software Foundation, version 2 of the License.
     8  *
     9  * This program is distributed in the hope that it will be useful,
    10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    12  * GNU General Public License for more details.
    13  *
    14  * You should have received a copy of the GNU General Public License
    15  * along with this program. Look for COPYING file in the top folder.
    16  * If not, see http://opensource.org/licenses/GPL-2.0.
    17  */
    18 package org.apidesign.vm4brwsr.api;
    19 
    20 import java.io.IOException;
    21 import org.apidesign.bck2brwsr.core.JavaScriptBody;
    22 
    23 /** Utility methods to talk to the Bck2Brwsr virtual machine.
    24  *
    25  * @author Jaroslav Tulach <jtulach@netbeans.org>
    26  * @since 0.9
    27  */
    28 public final class VM {
    29     private VM() {
    30     }
    31 
    32     /** Takes an existing class and replaces its existing byte code 
    33      * with new one.
    34      * 
    35      * @param clazz existing class to reload
    36      * @param byteCode new bytecode
    37      * @throws IOException an exception is something goes wrong
    38      */
    39     public static void reload(Class<?> clazz, byte[] byteCode) throws IOException {
    40         reloadImpl(clazz.getName(), byteCode);
    41     }
    42     
    43     @JavaScriptBody(args = { "name", "byteCode" }, body = 
    44         "var r = vm._reload;"
    45       + "if (!r) r = exports._reload;"
    46       + "r(name, byteCode);"
    47     )
    48     private static void reloadImpl(String name, byte[] byteCode) throws IOException {
    49         throw new IOException();
    50     }
    51 }