// Copyright (c) Corporation for National Research Initiatives
package org.python.core;
import java.io.ByteArrayOutputStream;
import java.util.ArrayList;
import java.util.List;
import org.python.compiler.AdapterMaker;
import org.python.compiler.JavaMaker;
class MakeProxies {
private static Class<?> makeClass(Class<?> referent,
List<Class<?>> secondary,
String name,
ByteArrayOutputStream bytes) {
List<Class<?>> referents = null;
if (secondary != null) {
if (referent != null) {
secondary.add(0, referent);
}
referents = secondary;
} else if (referent != null) {
referents = new ArrayList<Class<?>>(1);
referents.add(referent);
}
return BytecodeLoader.makeClass(name, referents, bytes.toByteArray());
}
public static Class<?> makeAdapter(Class<?> c) {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
AdapterMaker maker = new AdapterMaker(proxyPrefix + c.getName(), c);
try {
maker.build(bytes);
} catch (Exception exc) {
throw Py.JavaError(exc);
}
Py.saveClassFile(maker.myClass, bytes);
return makeClass(c, null, maker.myClass, bytes);
}
private static final String proxyPrefix = "org.python.proxies.";
private static int proxyNumber = 0;
public static synchronized Class<?> makeProxy(Class<?> superclass,
List<Class<?>> vinterfaces, String className, String proxyName,
PyObject dict) {
Class<?>[] interfaces = vinterfaces.toArray(new Class<?>[vinterfaces.size()]);
String fullProxyName = proxyPrefix + proxyName + "$" + proxyNumber++;
String pythonModuleName;
PyObject mn = dict.__finditem__("__module__");
if (mn == null) {
pythonModuleName = "foo";
} else {
pythonModuleName = (String) mn.__tojava__(String.class);
}
JavaMaker jm = new JavaMaker(superclass,
interfaces,
className,
pythonModuleName,
fullProxyName,
dict);
try {
ByteArrayOutputStream bytes = new ByteArrayOutputStream();
jm.build(bytes);
Py.saveClassFile(fullProxyName, bytes);
return makeClass(superclass, vinterfaces, jm.myClass, bytes);
} catch (Exception exc) {
throw Py.JavaError(exc);
}
}
}