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1
3 package org.python.util;
4
5 import java.io.*;
6 import org.python.core.*;
7
8 public class PythonObjectInputStream extends ObjectInputStream {
9 public PythonObjectInputStream(InputStream istr) throws IOException {
10 super(istr);
11 enableResolveObject(true);
12 }
13
14 protected Object  resolveObject(Object o) throws IOException {
15 Class cls = o.getClass();
16 if (cls == PyNone.class)
17 return Py.None;
18 else if (cls == PyEllipsis.class)
19 return Py.Ellipsis;
20 else if (cls == PyNotImplemented.class)
21 return Py.NotImplemented;
22 else if (o instanceof PySingleton)
23 throw new IOException("Unserializing a singleton");
24 return o;
25 }
26
27 protected Class resolveClass(ObjectStreamClass v)
28 throws IOException, ClassNotFoundException {
29 String clsName = v.getName();
30 if (clsName.startsWith("org.python.proxies")) {
32 int idx = clsName.lastIndexOf('$');
33 if (idx > 19)
34 clsName = clsName.substring(19, idx);
35
37 idx = clsName.indexOf('$');
38 if (idx >= 0) {
39 String mod = clsName.substring(0, idx);
40 clsName = clsName.substring(idx+1);
41
42 PyObject module = importModule(mod);
43 PyObject pycls = module.__getattr__(clsName.intern());
44 Object cls = pycls.__tojava__(Class .class);
45
46 if (cls != null && cls != Py.NoConversion)
47 return (Class ) cls;
48 }
49 }
50 try {
51 return super.resolveClass(v);
52 } catch (ClassNotFoundException exc) {
53 PyObject m = importModule(clsName);
54 Object cls = m.__tojava__(Class .class);
56 if (cls != null && cls != Py.NoConversion)
58 return (Class ) cls;
59 throw exc;
60 }
61 }
62
63
64 private static PyObject importModule(String name) {
65 PyObject silly_list = new PyTuple(new PyString[] {
66 Py.newString("__doc__"),
67 });
68 return __builtin__.__import__(name, null, null, silly_list);
69 }
70 }
71 |
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