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Java example source code file (StructureLoader.java)
The StructureLoader.java Java example source code/* * Copyright (c) 2010, 2013, 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 * or visit www.oracle.com if you need additional information or have any * questions. */ package jdk.nashorn.internal.runtime; import static jdk.nashorn.internal.codegen.Compiler.SCRIPTS_PACKAGE; import static jdk.nashorn.internal.codegen.Compiler.binaryName; import static jdk.nashorn.internal.codegen.CompilerConstants.JS_OBJECT_PREFIX; import java.security.ProtectionDomain; import jdk.nashorn.internal.codegen.ObjectClassGenerator; /** * Responsible for on the fly construction of structure classes. */ final class StructureLoader extends NashornLoader { private static final String JS_OBJECT_PREFIX_EXTERNAL = binaryName(SCRIPTS_PACKAGE) + '.' + JS_OBJECT_PREFIX.symbolName(); /** * Constructor. */ StructureLoader(final ClassLoader parent) { super(parent); } static boolean isStructureClass(final String name) { return name.startsWith(JS_OBJECT_PREFIX_EXTERNAL); } @Override protected Class<?> findClass(final String name) throws ClassNotFoundException { if (isStructureClass(name)) { return generateClass(name, name.substring(JS_OBJECT_PREFIX_EXTERNAL.length())); } return super.findClass(name); } /** * Generate a layout class. * @param name Name of class. * @param descriptor Layout descriptor. * @return Generated class. */ private Class<?> generateClass(final String name, final String descriptor) { final Context context = Context.getContextTrusted(); final byte[] code = new ObjectClassGenerator(context).generate(descriptor); return defineClass(name, code, 0, code.length, new ProtectionDomain(null, getPermissions(null))); } } Other Java examples (source code examples)Here is a short list of links related to this Java StructureLoader.java source code file: |
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