|
1 package org.python.core;
2
3 public class PyMethodDescr extends PyDescriptor implements PyBuiltinFunction.Info
4 {
5
6 protected int minargs, maxargs;
7
8 protected PyBuiltinFunction func;
9
10 public PyMethodDescr(String  name, Class c, int minargs,
11 int maxargs, PyBuiltinFunction func)
12 {
13 this.name = name;
14 this.dtype = PyType.fromClass(c);
15 this.minargs = minargs;
16 this.maxargs = maxargs;
17 this.func = func;
18 this.func.setInfo(this);
19 }
20
21 public String getName() {
22 return name;
23 }
24
25 public int getMaxargs() {
26 return maxargs;
27 }
28 public int getMinargs() {
29 return minargs;
30 }
31
32 public String toString() {
33 return "<method '"+name+"' of '"+dtype.fastGetName()+"' objects>";
34 }
35
36 public PyObject __call__(PyObject[] args) {
37 PyObject self = args[0];
38 PyType objtype = self.getType();
39 if (objtype != dtype && !objtype.isSubType(dtype))
40 throw call_wrongtype(objtype);
41 int n = args.length;
42 PyObject[] rest = new PyObject[n-1];
43 System.arraycopy(args,1,rest,0,n-1);
44 return func.inst_call(self,rest);
45 }
46
47 public PyObject __call__(PyObject[] args, String [] kws) {
48 int n = args.length;
49 if (kws.length == args.length)
50 throw Py.TypeError(blurb()+" needs an argument");
51 PyObject self = args[0];
52 PyType objtype = self.getType();
53 if (objtype != dtype && !objtype.isSubType(dtype))
54 throw call_wrongtype(objtype);
55 PyObject[] rest = new PyObject[n-1];
56 System.arraycopy(args,1,rest,0,n-1);
57 return func.inst_call(self,rest,kws);
58 }
59
60 public PyObject __call__() {
61 throw Py.TypeError(blurb()+" needs an argument");
62 }
63
64 public PyObject __call__(PyObject arg1) {
65 PyType objtype = arg1.getType();
66 if (objtype != dtype && !objtype.isSubType(dtype))
67 throw call_wrongtype(objtype);
68 return func.inst_call(arg1);
69 }
70
71 public PyObject __call__(PyObject arg1, PyObject arg2) {
72 PyType objtype = arg1.getType();
73 if (objtype != dtype && !objtype.isSubType(dtype))
74 throw call_wrongtype(objtype);
75 return func.inst_call(arg1,arg2);
76 }
77
78 public PyObject __call__(PyObject arg1, PyObject arg2, PyObject arg3) {
79 PyType objtype = arg1.getType();
80 if (objtype != dtype && !objtype.isSubType(dtype))
81 throw call_wrongtype(objtype);
82 return func.inst_call(arg1,arg2,arg3);
83 }
84
85 public PyObject __call__(PyObject arg1, PyObject arg2, PyObject arg3,
86 PyObject arg4)
87 {
88 PyType objtype = arg1.getType();
89 if (objtype != dtype && !objtype.isSubType(dtype))
90 throw call_wrongtype(objtype);
91 return func.inst_call(arg1,arg2,arg3,arg4);
92 }
93
94 public PyException unexpectedCall(int nargs,boolean keywords) {
95 return PyBuiltinFunction.DefaultInfo.unexpectedCall(nargs,keywords,name,minargs,maxargs);
96 }
97
98 public PyObject __get__(PyObject obj, PyObject type) {
99 if (obj != null) {
100 PyType objtype = obj.getType();
101 if (objtype != dtype && !objtype.isSubType(dtype))
102 throw get_wrongtype(objtype);
103 return func.makeBound(obj);
104 }
105 return this;
106 }
107
108 }
109 |
Popular Tags |
Java API By Example, From Geeks To Geeks.