RGBCube/serenity
1
Fork 0
mirror of https://github.com/RGBCube/serenity synced 2025-05-14 08:44:58 +00:00
Code Issues Activity Actions

AK: Implement string formatting for FixedStringBuffers

Browse source 
To ensure this happens without duplicating code, we allow forcing a
StringBuilder object to only use the inline buffer, so the code in the
AK/Format.cpp file doesn't need to deal with different underlying
storage types (expandable or inline-fixed) at all.
This commit is contained in:
Liav A 2023-08-12 00:38:01 +03:00 • committed by Andrew Kaster
parent b096f39e92
commit b2fd51f561
3 changed files with 76 additions and 6 deletions
Download patch file Download diff file Expand all files Collapse all files

43
AK/StringBuilder.cpp
View file

@ -1,5 +1,6 @@
/*
* Copyright (c) 2018-2021, Andreas Kling <kling@serenityos.org>
* Copyright (c) 2023, Liav A. <liavalb@hotmail.co.il>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
@ -23,6 +24,17 @@ namespace AK {
inline ErrorOr<void> StringBuilder::will_append(size_t size)
{
if (m_use_inline_capacity_only == UseInlineCapacityOnly::Yes) {
VERIFY(m_buffer.capacity() == StringBuilder::inline_capacity);
Checked<size_t> current_pointer = m_buffer.size();
current_pointer += size;
VERIFY(!current_pointer.has_overflow());
if (current_pointer <= StringBuilder::inline_capacity) {
return {};
}
return Error::from_errno(ENOMEM);
}
Checked<size_t> needed_capacity = m_buffer.size();
needed_capacity += size;
VERIFY(!needed_capacity.has_overflow());
@ -48,6 +60,27 @@ StringBuilder::StringBuilder(size_t initial_capacity)
m_buffer.ensure_capacity(initial_capacity);
}
StringBuilder::StringBuilder(UseInlineCapacityOnly use_inline_capacity_only)
: m_use_inline_capacity_only(use_inline_capacity_only)
{
}
size_t StringBuilder::length() const
{
return m_buffer.size();
}
bool StringBuilder::is_empty() const
{
return m_buffer.is_empty();
}
void StringBuilder::trim(size_t count)
{
auto decrease_count = min(m_buffer.size(), count);
m_buffer.resize(m_buffer.size() - decrease_count);
}
ErrorOr<void> StringBuilder::try_append(StringView string)
{
if (string.is_empty())
@ -129,6 +162,16 @@ ErrorOr<FlyString> StringBuilder::to_fly_string() const
}
#endif
u8* StringBuilder::data()
{
return m_buffer.data();
}
u8 const* StringBuilder::data() const
{
return m_buffer.data();
}
StringView StringBuilder::string_view() const
{
return StringView { data(), m_buffer.size() };