mirror of
https://github.com/RGBCube/serenity
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279383a8f3
This is a simple string class for use in the kernel. It encapsulates a length + character array in a single-allocation object. Main differences from AK::String: - Single-owner (no reference counting.) - Allocation failures are exposed, not hidden. The basic idea is to allow better and more precise string management in the kernel.
48 lines
1,000 B
C++
48 lines
1,000 B
C++
/*
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* Copyright (c) 2021, Andreas Kling <kling@serenityos.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Format.h>
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#include <AK/OwnPtr.h>
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namespace Kernel {
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class KString {
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public:
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static OwnPtr<KString> try_create_uninitialized(size_t, char*&);
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static OwnPtr<KString> try_create(StringView const&);
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OwnPtr<KString> try_clone() const;
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bool is_empty() const { return m_length == 0; }
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size_t length() const { return m_length; }
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char const* characters() const { return m_characters; }
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StringView view() const { return { characters(), length() }; }
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private:
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explicit KString(size_t length)
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: m_length(length)
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{
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}
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size_t m_length { 0 };
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char m_characters[0];
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};
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}
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namespace AK {
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template<>
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struct Formatter<Kernel::KString> : Formatter<StringView> {
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void format(FormatBuilder& builder, Kernel::KString const& value)
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{
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Formatter<StringView>::format(builder, value.characters());
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}
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};
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}
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