blob: 62075563e683d31da4bdc71ea4bb35f5267e03b7 (
plain)
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
|
#pragma once
#include "Buffer.h"
#include "Types.h"
#include "StdLibExtras.h"
namespace AK {
class ByteBuffer {
public:
ByteBuffer() { }
ByteBuffer(std::nullptr_t) { }
ByteBuffer(const ByteBuffer& other)
: m_impl(other.m_impl.copyRef())
{
}
ByteBuffer(ByteBuffer&& other)
: m_impl(move(other.m_impl))
{
}
ByteBuffer& operator=(ByteBuffer&& other)
{
if (this != &other)
m_impl = move(other.m_impl);
return *this;
}
ByteBuffer& operator=(const ByteBuffer& other)
{
m_impl = other.m_impl.copyRef();
return *this;
}
static ByteBuffer create_uninitialized(size_t size) { return ByteBuffer(Buffer<byte>::create_uninitialized(size)); }
static ByteBuffer copy(const byte* data, size_t size) { return ByteBuffer(Buffer<byte>::copy(data, size)); }
static ByteBuffer wrap(byte* data, size_t size) { return ByteBuffer(Buffer<byte>::wrap(data, size)); }
static ByteBuffer adopt(byte* data, size_t size) { return ByteBuffer(Buffer<byte>::adopt(data, size)); }
~ByteBuffer() { clear(); }
void clear() { m_impl = nullptr; }
operator bool() const { return !is_null(); }
bool operator!() const { return is_null(); }
bool is_null() const { return m_impl == nullptr; }
byte& operator[](size_t i) { ASSERT(m_impl); return (*m_impl)[i]; }
byte operator[](size_t i) const { ASSERT(m_impl); return (*m_impl)[i]; }
bool is_empty() const { return !m_impl || m_impl->is_empty(); }
size_t size() const { return m_impl ? m_impl->size() : 0; }
byte* pointer() { return m_impl ? m_impl->pointer() : nullptr; }
const byte* pointer() const { return m_impl ? m_impl->pointer() : nullptr; }
byte* offset_pointer(size_t offset) { return m_impl ? m_impl->offset_pointer(offset) : nullptr; }
const byte* offset_pointer(size_t offset) const { return m_impl ? m_impl->offset_pointer(offset) : nullptr; }
const void* end_pointer() const { return m_impl ? m_impl->end_pointer() : nullptr; }
// NOTE: trim() does not reallocate.
void trim(size_t size)
{
if (m_impl)
m_impl->trim(size);
}
ByteBuffer slice(size_t offset, size_t size) const
{
if (is_null())
return { };
if (offset >= this->size())
return { };
if (offset + size >= this->size())
size = this->size() - offset;
return copy(offset_pointer(offset), size);
}
private:
explicit ByteBuffer(RetainPtr<Buffer<byte>>&& impl)
: m_impl(move(impl))
{
}
RetainPtr<Buffer<byte>> m_impl;
};
}
using AK::ByteBuffer;
|
