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54d149bc25
The idea is to eventually get rid of protected state in StringBase. To do this, we first need to remove all references to m_data and m_short_string from String.
76 lines
1.5 KiB
C++
76 lines
1.5 KiB
C++
/*
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* Copyright (c) 2023, Dan Klishch <danilklishch@gmail.com>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/StringBase.h>
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#include <AK/StringInternals.h>
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namespace AK::Detail {
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ReadonlyBytes ShortString::bytes() const
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{
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return { storage, byte_count() };
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}
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size_t ShortString::byte_count() const
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{
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return byte_count_and_short_string_flag >> 1;
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}
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StringBase::StringBase(NonnullRefPtr<Detail::StringData const> data)
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: m_data(&data.leak_ref())
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{
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}
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StringBase::StringBase(StringBase const& other)
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: m_data(other.m_data)
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{
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if (!is_short_string())
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m_data->ref();
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}
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StringBase& StringBase::operator=(StringBase&& other)
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{
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if (!is_short_string())
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m_data->unref();
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m_data = exchange(other.m_data, nullptr);
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other.m_short_string.byte_count_and_short_string_flag = SHORT_STRING_FLAG;
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return *this;
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}
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StringBase& StringBase::operator=(StringBase const& other)
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{
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if (&other != this) {
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if (!is_short_string())
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m_data->unref();
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m_data = other.m_data;
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if (!is_short_string())
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m_data->ref();
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}
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return *this;
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}
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bool StringBase::is_short_string() const
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{
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return has_short_string_bit(reinterpret_cast<uintptr_t>(m_data));
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}
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ReadonlyBytes StringBase::bytes() const
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{
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if (is_short_string())
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return m_short_string.bytes();
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return m_data->bytes();
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}
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bool StringBase::operator==(StringBase const& other) const
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{
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if (is_short_string())
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return m_data == other.m_data;
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return bytes() == other.bytes();
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}
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}
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