blob: 3c462ee80b2e0fee0116049baf93fc779e9c5fdc (
plain) (
blame)
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
|
// Copyright 2011-2022, Molecular Matters GmbH <[email protected]>
// See LICENSE.txt for licensing details (2-clause BSD License: https://opensource.org/licenses/BSD-2-Clause)
#pragma once
#include "PDB_Macros.h"
#include "PDB_Assert.h"
namespace PDB
{
// A read-only view into arrays of any type and length.
template <typename T>
class PDB_NO_DISCARD ArrayView
{
public:
// Constructs an array view from a C array with explicit length.
inline constexpr explicit ArrayView(const T* const array, size_t length) PDB_NO_EXCEPT
: m_data(array)
, m_length(length)
{
}
PDB_DEFAULT_COPY_CONSTRUCTOR(ArrayView);
PDB_DEFAULT_MOVE_CONSTRUCTOR(ArrayView);
// Provides read-only access to the underlying array.
PDB_NO_DISCARD inline constexpr const T* Decay(void) const PDB_NO_EXCEPT
{
return m_data;
}
// Returns the length of the view.
PDB_NO_DISCARD inline constexpr size_t GetLength(void) const PDB_NO_EXCEPT
{
return m_length;
}
// Returns the i-th element.
PDB_NO_DISCARD inline const T& operator[](size_t i) const PDB_NO_EXCEPT
{
PDB_ASSERT(i < GetLength(), "Index %zu out of bounds [0, %zu).", i, GetLength());
return m_data[i];
}
// ------------------------------------------------------------------------------------------------
// Range-based for-loop support
// ------------------------------------------------------------------------------------------------
PDB_NO_DISCARD inline const T* begin(void) const PDB_NO_EXCEPT
{
return m_data;
}
PDB_NO_DISCARD inline const T* end(void) const PDB_NO_EXCEPT
{
return m_data + m_length;
}
private:
const T* const m_data;
const size_t m_length;
PDB_DISABLE_MOVE_ASSIGNMENT(ArrayView);
PDB_DISABLE_COPY_ASSIGNMENT(ArrayView);
};
}
|