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/*
* Copyright (c) 2020, Andreas Kling <kling@serenityos.org>
*
* SPDX-License-Identifier: BSD-2-Clause
*/
#include <AK/DeprecatedFlyString.h>
#include <AK/DeprecatedString.h>
#include <AK/HashTable.h>
#include <AK/Optional.h>
#include <AK/Singleton.h>
#include <AK/StringUtils.h>
#include <AK/StringView.h>
namespace AK {
struct DeprecatedFlyStringImplTraits : public Traits<StringImpl*> {
static unsigned hash(StringImpl const* s) { return s ? s->hash() : 0; }
static bool equals(StringImpl const* a, StringImpl const* b)
{
VERIFY(a);
VERIFY(b);
return *a == *b;
}
};
static Singleton<HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>> s_table;
static HashTable<StringImpl const*, DeprecatedFlyStringImplTraits>& fly_impls()
{
return *s_table;
}
void DeprecatedFlyString::did_destroy_impl(Badge<StringImpl>, StringImpl& impl)
{
fly_impls().remove(&impl);
}
DeprecatedFlyString::DeprecatedFlyString(DeprecatedString const& string)
{
if (string.is_null())
return;
if (string.impl()->is_fly()) {
m_impl = string.impl();
return;
}
auto it = fly_impls().find(const_cast<StringImpl*>(string.impl()));
if (it == fly_impls().end()) {
fly_impls().set(const_cast<StringImpl*>(string.impl()));
string.impl()->set_fly({}, true);
m_impl = string.impl();
} else {
VERIFY((*it)->is_fly());
m_impl = *it;
}
}
DeprecatedFlyString::DeprecatedFlyString(StringView string)
{
if (string.is_null())
return;
auto it = fly_impls().find(string.hash(), [&](auto& candidate) {
return string == candidate;
});
if (it == fly_impls().end()) {
auto new_string = string.to_deprecated_string();
fly_impls().set(new_string.impl());
new_string.impl()->set_fly({}, true);
m_impl = new_string.impl();
} else {
VERIFY((*it)->is_fly());
m_impl = *it;
}
}
template<typename T>
Optional<T> DeprecatedFlyString::to_int(TrimWhitespace trim_whitespace) const
{
return StringUtils::convert_to_int<T>(view(), trim_whitespace);
}
template Optional<i8> DeprecatedFlyString::to_int(TrimWhitespace) const;
template Optional<i16> DeprecatedFlyString::to_int(TrimWhitespace) const;
template Optional<i32> DeprecatedFlyString::to_int(TrimWhitespace) const;
template Optional<i64> DeprecatedFlyString::to_int(TrimWhitespace) const;
template<typename T>
Optional<T> DeprecatedFlyString::to_uint(TrimWhitespace trim_whitespace) const
{
return StringUtils::convert_to_uint<T>(view(), trim_whitespace);
}
template Optional<u8> DeprecatedFlyString::to_uint(TrimWhitespace) const;
template Optional<u16> DeprecatedFlyString::to_uint(TrimWhitespace) const;
template Optional<u32> DeprecatedFlyString::to_uint(TrimWhitespace) const;
template Optional<u64> DeprecatedFlyString::to_uint(TrimWhitespace) const;
#ifndef KERNEL
Optional<double> DeprecatedFlyString::to_double(TrimWhitespace trim_whitespace) const
{
return StringUtils::convert_to_floating_point<double>(view(), trim_whitespace);
}
Optional<float> DeprecatedFlyString::to_float(TrimWhitespace trim_whitespace) const
{
return StringUtils::convert_to_floating_point<float>(view(), trim_whitespace);
}
#endif
bool DeprecatedFlyString::equals_ignoring_ascii_case(StringView other) const
{
return StringUtils::equals_ignoring_ascii_case(view(), other);
}
bool DeprecatedFlyString::starts_with(StringView str, CaseSensitivity case_sensitivity) const
{
return StringUtils::starts_with(view(), str, case_sensitivity);
}
bool DeprecatedFlyString::ends_with(StringView str, CaseSensitivity case_sensitivity) const
{
return StringUtils::ends_with(view(), str, case_sensitivity);
}
DeprecatedFlyString DeprecatedFlyString::to_lowercase() const
{
return DeprecatedString(*m_impl).to_lowercase();
}
bool DeprecatedFlyString::operator==(DeprecatedString const& other) const
{
return m_impl == other.impl() || view() == other.view();
}
bool DeprecatedFlyString::operator==(StringView string) const
{
return view() == string;
}
bool DeprecatedFlyString::operator==(char const* string) const
{
return view() == string;
}
}
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