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1
3 package org.python.core;
4
5 import java.lang.reflect.*;
6 import java.util.Vector  ;
7 import java.util.Hashtable ;
8 import java.io.*;
9 import org.python.compiler.JavaMaker;
10 import org.python.compiler.AdapterMaker;
11 import org.python.compiler.ProxyMaker;
12
13
14 class MakeProxies
15 {
16 private static Class makeClass(Class referent, Vector secondary,
17 String name, ByteArrayOutputStream bytes)
18 {
19 Vector referents = null;
20
21 if (secondary != null) {
22 if (referent != null) {
23 secondary.insertElementAt(referent,0);
24 }
25 referents = secondary;
26 } else {
27 if (referent != null) {
28 referents = new Vector ();
29 referents.addElement(referent);
30 }
31 }
32
33 return BytecodeLoader.makeClass(name, referents, bytes.toByteArray());
34 }
35
36 public static Class makeAdapter(Class c) {
37 ByteArrayOutputStream bytes = new ByteArrayOutputStream();
38 String name;
39 try {
40 name = AdapterMaker.makeAdapter(c, bytes);
41 }
42 catch (Exception exc) {
43 throw Py.JavaError(exc);
44 }
45
46 Py.saveClassFile(name, bytes);
47
48 Class pc = makeClass(c, null, name, bytes);
49 return pc;
50 }
51
52 private static final String proxyPrefix = "org.python.proxies.";
53 private static int proxyNumber = 0;
54
55 public static synchronized Class makeProxy(Class superclass,
56 Vector vinterfaces,
57 String className,
58 String proxyName,
59 PyObject dict)
60 {
61 Class [] interfaces = new Class [vinterfaces.size()];
62
63 for (int i=0; i<vinterfaces.size(); i++) {
64 interfaces[i] = (Class )vinterfaces.elementAt(i);
65 }
66 String fullProxyName = proxyPrefix + proxyName + "$" + proxyNumber++;
67 String pythonModuleName;
68 PyObject mn=dict.__finditem__("__module__");
69 if (mn==null)
70 pythonModuleName = "foo";
71 else
72 pythonModuleName = (String )mn.__tojava__(String .class);
73 JavaMaker jm = new JavaMaker(superclass, interfaces, className,
74 pythonModuleName, fullProxyName, dict);
75 try {
76 jm.build();
77 ByteArrayOutputStream bytes = new ByteArrayOutputStream();
78 jm.classfile.write(bytes);
79 Py.saveClassFile(fullProxyName, bytes);
80
81 return makeClass(superclass, vinterfaces, jm.myClass, bytes);
82 }
83 catch (Exception exc) {
84 throw Py.JavaError(exc);
85 }
86 }
87 }
88 |
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