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
|
#ifndef VALUE_ARRAY_H
#define VALUE_ARRAY_H
#include <cstdlib>
#include <algorithm>
#include <new>
#include <boost/range.hpp>
#include <boost/utility/enable_if.hpp>
#include <boost/type_traits.hpp>
#ifdef USE_BOOST_SERIALIZE
# include <boost/serialization/split_member.hpp>
# include <boost/serialization/access.hpp>
#endif
// valarray like in that size is fixed (so saves space compared to vector), but same interface as vector (less resize/push_back/insert, of course)
template <class T, class A = std::allocator<T> >
class ValueArray : A // private inheritance so stateless allocator adds no size.
{
public:
typedef T value_type;
typedef T& reference;
typedef T const& const_reference;
typedef T* iterator;
typedef T const* const_iterator;
typedef std::size_t size_type;
typedef std::ptrdiff_t difference_type;
typedef T* pointer;
size_type size() const { return sz; }
bool empty() const { return size() == 0; }
iterator begin() { return array; }
iterator end() { return array + size(); }
const_iterator begin() const { return array; }
const_iterator end() const { return array + size(); }
reference operator[](size_type pos) { return array[pos]; }
const_reference operator[](size_type pos) const { return array[pos]; }
reference at(size_type pos) { return array[pos]; }
const_reference at(size_type pos) const { return array[pos]; }
reference front() { return array[0]; }
reference back() { return array[sz-1]; }
const_reference front() const { return array[0]; }
const_reference back() const { return array[sz-1]; }
ValueArray() : sz(0), array(NULL) {}
explicit ValueArray(size_type s, const_reference t = T())
: sz(s)
, array(A::allocate(s))
{
for (size_type i = 0; i != sz; ++i) { A::construct(array + i,t); }
}
template <class I>
ValueArray(I itr, I end)
: sz(std::distance(itr,end))
, array(A::allocate(sz))
{
copy_construct(itr,end,array);
}
~ValueArray()
{
for (size_type i = sz; i != 0; --i) {
A::destroy(array + (i - 1));
}
if (array != NULL) A::deallocate(array,sz);
}
void swap(ValueArray& other)
{
std::swap(sz,other.sz);
std::swap(array,other.array);
}
ValueArray(ValueArray const& other)
: sz(other.sz)
, array(A::allocate(sz))
{
copy_construct(other.begin(),other.end(),array);
}
ValueArray& operator=(ValueArray const& other)
{
ValueArray(other).swap(*this);
return *this;
}
template <class Range>
ValueArray( Range const& v
, typename boost::disable_if< boost::is_integral<Range> >::type* = 0)
: sz(boost::size(v))
, array(A::allocate(sz))
{
copy_construct(boost::begin(v),boost::end(v),array);
}
template <class Range> typename
boost::disable_if<
boost::is_integral<Range>
, ValueArray>::type& operator=(Range const& other)
{
ValueArray(other).swap(*this);
return *this;
}
private:
//friend class boost::serialization::access;
template <class I1, class I2>
void copy_construct(I1 itr, I1 end, I2 into)
{
for (; itr != end; ++itr, ++into) A::construct(into,*itr);
}
template <class Archive>
void save(Archive& ar, unsigned int version) const
{
ar << sz;
for (size_type i = 0; i != sz; ++i) ar << at(i);
}
template <class Archive>
void load(Archive& ar, unsigned int version)
{
size_type s;
ar >> s;
ValueArray v(s);
for (size_type i = 0; i != s; ++i) ar >> v[i];
this->swap(v);
}
#ifdef USE_BOOST_SERIALIZE
BOOST_SERIALIZATION_SPLIT_MEMBER()
#endif
size_type sz;
pointer array;
};
template <class T, class A>
bool operator==(ValueArray<T,A> const& v1, ValueArray<T,A> const& v2)
{
return (v1.size() == v2.size()) and
std::equal(v1.begin(),v1.end(),v2.begin());
}
template <class T,class A>
bool operator< (ValueArray<T,A> const& v1, ValueArray<T,A> const& v2)
{
return std::lexicographical_compare( v1.begin()
, v1.end()
, v2.begin()
, v2.end() );
}
#endif
|
