com.hazelcast.org.codehaus.janino.ResourceFinderIClassLoader 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.io.IOException;
import java.io.InputStream;
import com.hazelcast.org.codehaus.commons.compiler.util.resource.Resource;
import com.hazelcast.org.codehaus.commons.compiler.util.resource.ResourceFinder;
import com.hazelcast.org.codehaus.commons.nullanalysis.Nullable;
import com.hazelcast.org.codehaus.janino.util.ClassFile;
/**
* This {@link com.hazelcast.org.codehaus.janino.IClassLoader} loads IClasses through a a {@link
* com.hazelcast.org.codehaus.commons.compiler.util.resource.ResourceFinder} that designates {@link
* com.hazelcast.org.codehaus.janino.util.ClassFile}s.
*/
public
class ResourceFinderIClassLoader extends IClassLoader {
private final ResourceFinder resourceFinder;
public
ResourceFinderIClassLoader(ResourceFinder resourceFinder, @Nullable IClassLoader parentIClassLoader) {
super(parentIClassLoader);
this.resourceFinder = resourceFinder;
this.postConstruct();
}
@Override @Nullable protected IClass
findIClass(String descriptor) throws ClassNotFoundException {
String className = Descriptor.toClassName(descriptor);
// Find the class file resource.
Resource classFileResource = this.resourceFinder.findResource(ClassFile.getClassFileResourceName(className));
if (classFileResource == null) return null;
// Open the class file resource.
InputStream is;
try {
is = classFileResource.open();
} catch (IOException ex) {
throw new ClassNotFoundException("Opening resource \"" + classFileResource.getFileName() + "\"", ex);
}
// Load the IClass from the class file.
ClassFile cf;
try {
cf = new ClassFile(is);
} catch (IOException e) {
throw new ClassNotFoundException("Reading resource \"" + classFileResource.getFileName() + "\"", e);
} finally {
try { is.close(); } catch (IOException e) {}
}
IClass iClass = new ClassFileIClass(cf, this);
this.defineIClass(iClass);
return iClass;
}
}
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