/***** BEGIN LICENSE BLOCK *****
* Version: CPL 1.0/GPL 2.0/LGPL 2.1
*
* The contents of this file are subject to the Common Public
* License Version 1.0 (the "License"); you may not use this file
* except in compliance with the License. You may obtain a copy of
* the License at http://www.eclipse.org/legal/cpl-v10.html
*
* Software distributed under the License is distributed on an "AS
* IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or
* implied. See the License for the specific language governing
* rights and limitations under the License.
*
* Copyright (C) 2007 The JRuby Community
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* either of the GNU General Public License Version 2 or later (the "GPL"),
* or the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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package org.jruby.runtime.load;
import java.io.BufferedInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.io.InputStream;
import org.jruby.Ruby;
import org.jruby.ast.executable.Script;
import org.jruby.runtime.Block;
import org.jruby.runtime.builtin.IRubyObject;
import org.jruby.util.JRubyClassLoader;
import org.objectweb.asm.ClassReader;
public class JavaCompiledScript implements Library {
private final LoadServiceResource resource;
public JavaCompiledScript(LoadServiceResource resource) {
this.resource = resource;
}
public void load(Ruby runtime, boolean wrap) {
InputStream in = null;
try {
in = new BufferedInputStream(resource.getURL().openStream());
ByteArrayOutputStream baos = new ByteArrayOutputStream();
byte[] buf = new byte[8196];
int read = 0;
while ((read = in.read(buf)) != -1) {
baos.write(buf, 0, read);
}
buf = baos.toByteArray();
JRubyClassLoader jcl = runtime.getJRubyClassLoader();
ClassReader cr = new ClassReader(buf);
String className = cr.getClassName().replace('/', '.');
Class clazz = null;
try {
clazz = jcl.loadClass(className);
} catch (ClassNotFoundException cnfe) {
clazz = jcl.defineClass(className, buf);
}
// if it's a compiled JRuby script, instantiate and run it
if (Script.class.isAssignableFrom(clazz)) {
Script script = (Script)clazz.newInstance();
script.setFilename(resource.getName());
script.load(runtime.getCurrentContext(), runtime.getTopSelf(), IRubyObject.NULL_ARRAY, Block.NULL_BLOCK);
}
} catch (IOException e) {
throw runtime.newIOErrorFromException(e);
} catch (InstantiationException ie) {
if (runtime.getDebug().isTrue()) {
ie.printStackTrace();
}
throw runtime.newLoadError("Error loading compiled script '" + resource.getName() + "': " + ie);
} catch (IllegalAccessException iae) {
if (runtime.getDebug().isTrue()) {
iae.printStackTrace();
}
throw runtime.newLoadError("Error loading compiled script '" + resource.getName() + "': " + iae);
} catch (LinkageError le) {
if (runtime.getDebug().isTrue()) {
le.printStackTrace();
}
throw runtime.newLoadError("Linkage error loading compiled script; you may need to recompile '" + resource.getName() + "': " + le);
} finally {
try {
in.close();
} catch (IOException ioe) {
throw runtime.newIOErrorFromException(ioe);
}
}
}
}