/*
* Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package com.sun.btrace.compiler;
import com.sun.btrace.org.objectweb.asm.ClassWriter;
import java.io.File;
import java.io.PrintWriter;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLClassLoader;
import java.util.ArrayList;
import java.util.List;
/**
*
* @author Jaroslav Bachorik
*/
class CompilerClassWriter extends ClassWriter {
private final URLClassLoader cl;
public CompilerClassWriter(String classPath, PrintWriter perr) {
super(ClassWriter.COMPUTE_FRAMES);
List<URL> urls = new ArrayList<>();
for(String e : classPath.split(File.pathSeparator)) {
File f = new File(e);
try {
urls.add(f.toURI().toURL());
} catch (MalformedURLException ex) {
perr.printf("%s is not a valid classpath entry\n", e);
}
}
cl = new URLClassLoader(urls.toArray(new URL[urls.size()]), getClass().getClassLoader());
}
@Override
protected String getCommonSuperClass(String type1, String type2) {
Class<?> c, d;
try {
c = cl.loadClass(type1.replace('/', '.'));
d = cl.loadClass(type2.replace('/', '.'));
} catch (Exception e) {
throw new RuntimeException(e.toString());
}
if (c.isAssignableFrom(d)) {
return type1;
}
if (d.isAssignableFrom(c)) {
return type2;
}
if (c.isInterface() || d.isInterface()) {
return "java/lang/Object";
} else {
do {
c = c.getSuperclass();
} while (!c.isAssignableFrom(d));
return c.getName().replace('.', '/');
}
}
}