forked from pythonnet/pythonnet
-
Notifications
You must be signed in to change notification settings - Fork 0
Expand file tree
/
Copy pathclassbase.cs
More file actions
executable file
·181 lines (141 loc) · 5.46 KB
/
classbase.cs
File metadata and controls
executable file
·181 lines (141 loc) · 5.46 KB
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
// ==========================================================================
// This software is subject to the provisions of the Zope Public License,
// Version 2.0 (ZPL). A copy of the ZPL should accompany this distribution.
// THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
// WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
// WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
// FOR A PARTICULAR PURPOSE.
// ==========================================================================
using System;
using System.Collections;
using System.Reflection;
using System.Security;
using System.Runtime.InteropServices;
namespace Python.Runtime {
/// <summary>
/// Base class for Python types that reflect managed types / classes.
/// Concrete subclasses include ClassObject and DelegateObject. This
/// class provides common attributes and common machinery for doing
/// class initialization (initialization of the class __dict__). The
/// concrete subclasses provide slot implementations appropriate for
/// each variety of reflected type.
/// </summary>
internal class ClassBase : ManagedType {
internal bool is_exception;
internal Indexer indexer;
internal Type type;
internal ClassBase(Type tp) : base() {
is_exception = false;
indexer = null;
type = tp;
}
internal virtual bool CanSubclass() {
return (!this.type.IsEnum);
}
//====================================================================
// Implements __init__ for reflected classes and value types.
//====================================================================
[CallConvCdecl()]
public static int tp_init(IntPtr ob, IntPtr args, IntPtr kw) {
return 0;
}
//====================================================================
// Default implementation of [] semantics for reflected types.
//====================================================================
public virtual IntPtr type_subscript(IntPtr ob, IntPtr idx) {
return Exceptions.RaiseTypeError("unsubscriptable object");
}
//====================================================================
// Standard comparison implementation for instances of reflected types.
//====================================================================
[CallConvCdecl()]
public static int tp_compare(IntPtr ob, IntPtr other) {
if (ob == other) {
return 0;
}
CLRObject co1 = GetManagedObject(ob) as CLRObject;
CLRObject co2 = GetManagedObject(other) as CLRObject;
Object o1 = co1.inst;
Object o2 = co2.inst;
if (Object.Equals(o1, o2)) {
return 0;
}
return -1;
}
//====================================================================
// Standard iteration support for instances of reflected types. This
// allows natural iteration over objects that either are IEnumerable
// or themselves support IEnumerator directly.
//====================================================================
[CallConvCdecl()]
public static IntPtr tp_iter(IntPtr ob) {
CLRObject co = GetManagedObject(ob) as CLRObject;
if (co == null) {
return Exceptions.RaiseTypeError("invalid object");
}
IEnumerable e = co.inst as IEnumerable;
IEnumerator o;
if (e != null) {
o = e.GetEnumerator();
}
else {
o = co.inst as IEnumerator;
if (o == null) {
string message = "iteration over non-sequence";
return Exceptions.RaiseTypeError(message);
}
}
return new Iterator(o).pyHandle;
}
//====================================================================
// Standard __hash__ implementation for instances of reflected types.
//====================================================================
[CallConvCdecl()]
public static IntPtr tp_hash(IntPtr ob) {
CLRObject co = GetManagedObject(ob) as CLRObject;
if (co == null) {
return Exceptions.RaiseTypeError("unhashable type");
}
return new IntPtr(co.inst.GetHashCode());
}
//====================================================================
// Standard __str__ implementation for instances of reflected types.
//====================================================================
[CallConvCdecl()]
public static IntPtr tp_str(IntPtr ob) {
CLRObject co = GetManagedObject(ob) as CLRObject;
if (co == null) {
return Exceptions.RaiseTypeError("invalid object");
}
return Runtime.PyString_FromString(co.inst.ToString());
}
//====================================================================
// Default implementations for required Python GC support.
//====================================================================
[CallConvCdecl()]
public static int tp_traverse(IntPtr ob, IntPtr func, IntPtr args) {
return 0;
}
[CallConvCdecl()]
public static int tp_clear(IntPtr ob) {
return 0;
}
[CallConvCdecl()]
public static int tp_is_gc(IntPtr type) {
return 1;
}
//====================================================================
// Standard dealloc implementation for instances of reflected types.
//====================================================================
[CallConvCdecl()]
public static void tp_dealloc(IntPtr ob) {
ManagedType self = GetManagedObject(ob);
IntPtr dict = Marshal.ReadIntPtr(ob, ObjectOffset.ob_dict);
Runtime.Decref(dict);
Runtime.PyObject_GC_UnTrack(self.pyHandle);
Runtime.PyObject_GC_Del(self.pyHandle);
Runtime.Decref(self.tpHandle);
self.gcHandle.Free();
}
}
}