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LibSQL: Introduce Serializer as a mediator between Heap and client code

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Classes reading and writing to the data heap would communicate directly
with the Heap object, and transfer ByteBuffers back and forth with it.
This makes things like caching and locking hard. Therefore all data
persistence activity will be funneled through a Serializer object which
in turn submits it to the Heap.

Introducing this unfortunately resulted in a huge amount of churn, in
which a number of smaller refactorings got caught up as well.
This commit is contained in:
Jan de Visser 2021-08-18 20:50:13 -04:00 • committed by Andreas Kling
parent 9e43508d30
commit 85a84b0794
Notes: sideshowbarker 2024-07-18 05:26:05 +09:00
30 changed files with 995 additions and 780 deletions
Userland/Libraries/LibSQL
Serializer.cpp

28
Userland/Libraries/LibSQL/Serializer.cpp Normal file
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/*
* Copyright (c) 2021, Jan de Visser <jan@de-visser.net>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <LibSQL/Serializer.h>
namespace SQL {
void Serializer::serialize(String const& text)
{
serialize<u32>((u32)text.length());
if (!text.is_empty())
write((u8 const*)text.characters(), text.length());
}
void Serializer::deserialize_to(String& text)
{
auto length = deserialize<u32>();
if (length > 0) {
text = String(reinterpret_cast<char const*>(read(length)), length);
} else {
text = "";
}
}
}