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
|
#ifndef QPID_SERIALIZER_H
#define QPID_SERIALIZER_H
/*
*
* 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.
*
*/
#include <boost/utility/enable_if.hpp>
#include <boost/static_assert.hpp>
#include <boost/type_traits/is_class.hpp>
#include <algorithm>
namespace qpid {
// FIXME aconway 2008-03-03: Doc - esp decoding
template <class Derived> class Serializer {
public:
typedef Serializer result_type; // unary functor requirement.
static const bool IS_DECODER=false;
/** Generic handler for class objects, call serialize() */
template <class T>
typename boost::enable_if<boost::is_class<T>, Derived&>::type
operator()(T& t) {
t.serialize(self());
return self();
}
/** Generic handler for const class objects, call serialize() */
template <class T>
typename boost::enable_if<boost::is_class<T>, Derived&>::type
operator()(const T& t) {
assert(!Derived::IS_DECODER); // We won't modify the value.
// const_cast so we don't need 2 serialize() members for every class.
const_cast<T&>(t).serialize(self());
return self();
}
template <class T, bool=false> struct Split {
Split(Derived& s, T& t) { t.encode(s); }
};
template <class T> struct Split<T,true> {
Split(Derived& s, T& t) { t.decode(s); }
};
/**
* Called by classes that want to receive separate
* encode()/decode() calls.
*/
template <class T>
void split(T& t) { Split<T, Derived::IS_DECODER>(self(),t); }
private:
Derived& self() { return *static_cast<Derived*>(this); }
};
} // namespace qpid
#endif /*!QPID_SERIALIZER_H*/
|
