65 lines
2.6 KiB
Java
65 lines
2.6 KiB
Java
/*
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* Copyright (c) 2024, Oracle and/or its affiliates. All rights reserved.
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* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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*
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* This code is free software; you can redistribute it and/or modify it
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* under the terms of the GNU General Public License version 2 only, as
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* published by the Free Software Foundation.
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*
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* This code is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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* version 2 for more details (a copy is included in the LICENSE file that
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* accompanied this code).
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*
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* You should have received a copy of the GNU General Public License version
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* 2 along with this work; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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*
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* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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* or visit www.oracle.com if you need additional information or have any
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* questions.
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*/
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package compiler.lib.compile_framework;
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import java.io.File;
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import java.io.IOException;
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import java.net.URL;
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import java.net.URLClassLoader;
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import java.nio.file.Path;
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import java.util.ArrayList;
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import java.util.List;
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/**
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* Build a ClassLoader that loads from classpath and {@code classesDir}.
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* Helper class that generates a ClassLoader which allows loading classes
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* from the classpath (see {@link Utils#getClassPaths()}) and {@code classesDir}.
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* <p>
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* The CompileFramework compiles all its classes to a specific {@code classesDir},
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* and this generated ClassLoader thus can be used to load those classes.
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*/
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class ClassLoaderBuilder {
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/**
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* Build a ClassLoader that loads from classpath and {@code classesDir}.
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*/
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public static ClassLoader build(Path classesDir) {
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ClassLoader sysLoader = ClassLoader.getSystemClassLoader();
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try {
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// Classpath for all included classes (e.g. IR Framework).
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// Get all class paths, convert to URLs.
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List<URL> urls = new ArrayList<>();
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for (String path : Utils.getClassPaths()) {
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urls.add(new File(path).toURI().toURL());
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}
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// And add in the compiled classes from this instance of CompileFramework.
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urls.add(new File(classesDir.toString()).toURI().toURL());
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return URLClassLoader.newInstance(urls.toArray(URL[]::new), sysLoader);
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} catch (IOException e) {
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throw new CompileFrameworkException("IOException while creating ClassLoader", e);
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}
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}
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}
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