/*
* 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. The name of the author may not be used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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 org.codehaus.janino;
import java.io.*;
import org.codehaus.janino.util.ClassFile;
import org.codehaus.janino.util.resource.*;
/**
* This {@link org.codehaus.janino.IClassLoader} loads IClasses through a
* a {@link org.codehaus.janino.util.resource.ResourceFinder} that designates
* {@link org.codehaus.janino.util.ClassFile}s.
*/
public class ResourceFinderIClassLoader extends IClassLoader {
private final ResourceFinder resourceFinder;
public ResourceFinderIClassLoader(
ResourceFinder resourceFinder,
IClassLoader optionalParentIClassLoader
) {
super(optionalParentIClassLoader);
this.resourceFinder = resourceFinder;
this.postConstruct();
}
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;
}
}