83 lines
3.4 KiB
Java
83 lines
3.4 KiB
Java
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/*
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* Janino - An embedded Java[TM] compiler
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*
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* Copyright (c) 2001-2010, Arno Unkrig
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without modification, are permitted provided that the
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* following conditions are met:
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*
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* 1. Redistributions of source code must retain the above copyright notice, this list of conditions and the
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* following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the
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* following disclaimer in the documentation and/or other materials provided with the distribution.
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* 3. The name of the author may not be used to endorse or promote products derived from this software without
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* specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL
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* THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
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* BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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* POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.codehaus.janino;
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import java.io.IOException;
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import java.io.InputStream;
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import org.codehaus.janino.util.ClassFile;
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import org.codehaus.janino.util.resource.Resource;
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import org.codehaus.janino.util.resource.ResourceFinder;
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/**
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* This {@link org.codehaus.janino.IClassLoader} loads IClasses through a
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* a {@link org.codehaus.janino.util.resource.ResourceFinder} that designates
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* {@link org.codehaus.janino.util.ClassFile}s.
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*/
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public
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class ResourceFinderIClassLoader extends IClassLoader {
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private final ResourceFinder resourceFinder;
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public
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ResourceFinderIClassLoader(ResourceFinder resourceFinder, IClassLoader optionalParentIClassLoader) {
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super(optionalParentIClassLoader);
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this.resourceFinder = resourceFinder;
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this.postConstruct();
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}
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@Override protected IClass
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findIClass(String descriptor) throws ClassNotFoundException {
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String className = Descriptor.toClassName(descriptor);
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// Find the class file resource.
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Resource classFileResource = this.resourceFinder.findResource(ClassFile.getClassFileResourceName(className));
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if (classFileResource == null) return null;
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// Open the class file resource.
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InputStream is;
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try {
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is = classFileResource.open();
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} catch (IOException ex) {
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throw new ClassNotFoundException("Opening resource \"" + classFileResource.getFileName() + "\"", ex);
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}
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// Load the IClass from the class file.
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ClassFile cf;
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try {
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cf = new ClassFile(is);
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} catch (IOException e) {
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throw new ClassNotFoundException("Reading resource \"" + classFileResource.getFileName() + "\"", e);
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} finally {
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try { is.close(); } catch (IOException e) {}
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}
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IClass iClass = new ClassFileIClass(cf, this);
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this.defineIClass(iClass);
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return iClass;
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}
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}
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