com.hazelcast.org.codehaus.janino.ClassLoaderIClassLoader Maven / Gradle / Ivy
/*
* Janino - An embedded Java[TM] compiler
*
* Copyright (c) 2001-2010 Arno Unkrig. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
* following conditions are met:
*
* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
* following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
* following disclaimer in the documentation and/or other materials provided with the distribution.
* 3. Neither the name of the copyright holder nor the names of its contributors may be used to endorse or promote
* products derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR
* SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY,
* WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
* OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
package com.hazelcast.org.codehaus.janino;
import java.util.logging.Level;
import java.util.logging.Logger;
import com.hazelcast.org.codehaus.commons.nullanalysis.Nullable;
/**
* An {@link IClassLoader} that loads {@link IClass}es through a reflection {@link ClassLoader}.
*/
public
class ClassLoaderIClassLoader extends IClassLoader {
private static final Logger LOGGER = Logger.getLogger(ClassLoaderIClassLoader.class.getName());
/**
* @param classLoader The delegate that loads the classes
*/
public
ClassLoaderIClassLoader(ClassLoader classLoader) {
super(
null // parentIClassLoader
);
this.classLoader = classLoader;
super.postConstruct();
}
/**
* Equivalent to
*
* ClassLoaderIClassLoader(Thread.currentThread().getContextClassLoader())
*
*/
public
ClassLoaderIClassLoader() { this(Thread.currentThread().getContextClassLoader()); }
/**
* @return The delegate {@link ClassLoader}
*/
public ClassLoader
getClassLoader() { return this.classLoader; }
@Override @Nullable protected IClass
findIClass(String descriptor) throws ClassNotFoundException {
ClassLoaderIClassLoader.LOGGER.entering(null, "findIClass", descriptor);
Class> clazz;
try {
clazz = this.classLoader.loadClass(Descriptor.toClassName(descriptor));
} catch (ClassNotFoundException e) {
// Determine whether the class DOES NOT EXIST, or whether there were problems loading it. That's easier
// said than done... the following seems to work:
// (See also https://github.com/janino-compiler/janino/issues/104).
{
Throwable t = e.getCause();
while (t instanceof ClassNotFoundException) t = t.getCause();
if (t == null) return null;
}
throw e;
}
ClassLoaderIClassLoader.LOGGER.log(Level.FINE, "clazz={0}", clazz);
IClass result = new ReflectionIClass(clazz, this);
this.defineIClass(result);
return result;
}
private final ClassLoader classLoader;
}
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