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1 package org.python.core;
2
3 public abstract class PyNewWrapper extends PyBuiltinFunctionWide {
4
5 protected PyType for_type;
6
7 public PyNewWrapper(Class  c, String name, int minargs, int maxargs) {
8 super(new DefaultInfo(name, minargs, maxargs));
9 for_type = PyType.fromClass(c);
10 }
11
12 public PyObject getSelf() {
13 return for_type;
14 }
15
16 protected PyBuiltinFunction makeBound(PyObject self) {
17 throw Py.SystemError("__new__ wrappers are already bound");
18 }
19
20 public PyObject inst_call(PyObject self, PyObject[] args) {
21 throw Py.SystemError("__new__ wrappers are already bound");
22 }
23
24 public PyObject inst_call(
25 PyObject self,
26 PyObject[] args,
27 String [] keywords) {
28 throw Py.SystemError("__new__ wrappers are already bound");
29 }
30
31 public PyObject __call__(PyObject[] args) {
32 return __call__(args, Py.NoKeywords);
33 }
34
35 public PyObject __call__(PyObject[] args, String [] keywords) {
36 int nargs = args.length;
37 if (nargs < 1 || nargs == keywords.length) {
38 throw Py.TypeError(
39 for_type.fastGetName() + ".__new__(): not enough arguments");
40 }
41 PyObject arg0 = args[0];
42 if (!(arg0 instanceof PyType)) {
43 throw Py.TypeError(
44 for_type.fastGetName()
45 + ".__new__(X): X is not a type object ("
46 + arg0.getType().fastGetName()
47 + ")");
48 }
49 PyType subtype = (PyType) arg0;
50 if (!subtype.isSubType(for_type)) {
51 throw Py.TypeError(
52 for_type.fastGetName()
53 + ".__new__("
54 + subtype.fastGetName()
55 + "): "
56 + subtype.fastGetName()
57 + " is not a subtype of "
58 + for_type.fastGetName());
59 }
60
61 if (subtype.getStatic() != for_type) {
62 throw Py.TypeError(
63 for_type.fastGetName()
64 + ".__new__("
65 + subtype.fastGetName()
66 + ") is not safe, use "
67 + subtype.fastGetName()
68 + ".__new__()");
69 }
70
71 PyObject[] rest = new PyObject[nargs-1];
72 System.arraycopy(args,1,rest,0,nargs-1);
73 return new_impl(false,subtype,rest,keywords);
74 }
75
76 public abstract PyObject new_impl(boolean init,PyType subtype, PyObject[] args, String [] keywords);
78
79 }
80
81
82 |
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