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108 lines
2.7 KiB
C++
108 lines
2.7 KiB
C++
/*
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* Copyright (c) 2020, Andreas Kling <andreas@ladybird.org>
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#include <AK/ByteString.h>
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#include <AK/DeprecatedFlyString.h>
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#include <AK/HashTable.h>
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#include <AK/Optional.h>
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#include <AK/Singleton.h>
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#include <AK/StringUtils.h>
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#include <AK/StringView.h>
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namespace AK {
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struct DeprecatedFlyStringImplTraits : public Traits<StringImpl const*> {
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static unsigned hash(StringImpl const* s) { return s->hash(); }
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static bool equals(StringImpl const* a, StringImpl const* b)
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{
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return *a == *b;
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}
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};
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static Singleton<HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>> s_table;
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static HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>& fly_impls()
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{
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return *s_table;
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}
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void DeprecatedFlyString::did_destroy_impl(Badge<StringImpl>, StringImpl& impl)
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{
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fly_impls().remove(&impl);
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}
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DeprecatedFlyString::DeprecatedFlyString(ByteString const& string)
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: m_impl(string.impl())
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{
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if (string.impl()->is_fly())
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return;
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auto it = fly_impls().find(string.impl());
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if (it == fly_impls().end()) {
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fly_impls().set(string.impl());
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string.impl()->set_fly({}, true);
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m_impl = string.impl();
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} else {
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VERIFY((*it)->is_fly());
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m_impl = **it;
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}
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}
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DeprecatedFlyString::DeprecatedFlyString(StringView string)
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: m_impl(StringImpl::the_empty_stringimpl())
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{
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if (string.is_null())
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return;
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auto it = fly_impls().find(string.hash(), [&](auto& candidate) {
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return string == *candidate;
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});
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if (it == fly_impls().end()) {
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auto new_string = string.to_byte_string();
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fly_impls().set(new_string.impl());
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new_string.impl()->set_fly({}, true);
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m_impl = new_string.impl();
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} else {
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VERIFY((*it)->is_fly());
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m_impl = **it;
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}
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}
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bool DeprecatedFlyString::equals_ignoring_ascii_case(StringView other) const
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{
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return StringUtils::equals_ignoring_ascii_case(view(), other);
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}
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bool DeprecatedFlyString::starts_with(StringView str, CaseSensitivity case_sensitivity) const
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{
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return StringUtils::starts_with(view(), str, case_sensitivity);
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}
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bool DeprecatedFlyString::ends_with(StringView str, CaseSensitivity case_sensitivity) const
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{
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return StringUtils::ends_with(view(), str, case_sensitivity);
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}
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DeprecatedFlyString DeprecatedFlyString::to_lowercase() const
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{
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return ByteString(*m_impl).to_lowercase();
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}
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bool DeprecatedFlyString::operator==(ByteString const& other) const
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{
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return m_impl == other.impl() || view() == other.view();
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}
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bool DeprecatedFlyString::operator==(StringView string) const
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{
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return view() == string;
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}
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bool DeprecatedFlyString::operator==(char const* string) const
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{
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return view() == string;
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}
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}
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