mirror of
https://github.com/RGBCube/serenity
synced 2025-07-26 07:57:47 +00:00
AK: Add helper type for serializing structures into buffer
This commit is contained in:
parent
04226f0c0a
commit
217415226e
1 changed files with 47 additions and 0 deletions
47
AK/BinaryBufferWriter.h
Normal file
47
AK/BinaryBufferWriter.h
Normal file
|
@ -0,0 +1,47 @@
|
||||||
|
/*
|
||||||
|
* Copyright (c) 2021, Sahan Fernando <sahan.h.fernando@gmail.com>
|
||||||
|
*
|
||||||
|
* SPDX-License-Identifier: BSD-2-Clause
|
||||||
|
*/
|
||||||
|
|
||||||
|
#pragma once
|
||||||
|
|
||||||
|
#include <AK/Span.h>
|
||||||
|
#include <AK/StdLibExtraDetails.h>
|
||||||
|
|
||||||
|
namespace AK {
|
||||||
|
|
||||||
|
class BinaryBufferWriter {
|
||||||
|
public:
|
||||||
|
BinaryBufferWriter(Bytes target)
|
||||||
|
: m_target(target)
|
||||||
|
{
|
||||||
|
}
|
||||||
|
|
||||||
|
template<typename T>
|
||||||
|
requires(AK::Detail::IsTriviallyConstructible<T>) T& append_structure()
|
||||||
|
{
|
||||||
|
VERIFY((reinterpret_cast<FlatPtr>(m_target.data()) + m_offset) % alignof(T) == 0);
|
||||||
|
VERIFY(m_offset + sizeof(T) <= m_target.size());
|
||||||
|
T* allocated = new (m_target.data() + m_offset) T;
|
||||||
|
m_offset += sizeof(T);
|
||||||
|
return *allocated;
|
||||||
|
}
|
||||||
|
|
||||||
|
void skip_bytes(size_t num_bytes)
|
||||||
|
{
|
||||||
|
VERIFY(m_offset + num_bytes <= m_target.size());
|
||||||
|
m_offset += num_bytes;
|
||||||
|
}
|
||||||
|
|
||||||
|
[[nodiscard]] size_t current_offset() const
|
||||||
|
{
|
||||||
|
return m_offset;
|
||||||
|
}
|
||||||
|
|
||||||
|
private:
|
||||||
|
Bytes m_target;
|
||||||
|
size_t m_offset { 0 };
|
||||||
|
};
|
||||||
|
|
||||||
|
}
|
Loading…
Add table
Add a link
Reference in a new issue