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
|
#
# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing,
# software distributed under the License is distributed on an
# "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
# KIND, either express or implied. See the License for the
# specific language governing permissions and limitations
# under the License.
#
from sets import Set
class Message:
COMMON_FIELDS = Set(("content", "method", "fields"))
def __init__(self, method, fields, content = None):
self.method = method
self.fields = fields
self.content = content
def __len__(self):
l = len(self.fields)
if self.method.content:
l += 1
return len(self.fields)
def _idx(self, idx):
if idx < 0: idx += len(self)
if idx < 0 or idx > len(self):
raise IndexError(idx)
return idx
def __getitem__(self, idx):
idx = self._idx(idx)
if idx == len(self.fields):
return self.content
else:
return self.fields[idx]
def __setitem__(self, idx, value):
idx = self._idx(idx)
if idx == len(self.fields):
self.content = value
else:
self.fields[idx] = value
def _slot(self, attr):
if attr in Message.COMMON_FIELDS:
env = self.__dict__
key = attr
else:
env = self.fields
try:
field = self.method.fields.bypyname[attr]
key = self.method.fields.index(field)
except KeyError:
raise AttributeError(attr)
return env, key
def __getattr__(self, attr):
env, key = self._slot(attr)
return env[key]
def __setattr__(self, attr, value):
env, key = self._slot(attr)
env[attr] = value
STR = "%s %s content = %s"
REPR = STR.replace("%s", "%r")
def __str__(self):
return Message.STR % (self.method, self.fields, self.content)
def __repr__(self):
return Message.REPR % (self.method, self.fields, self.content)
|
