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Bump project requirement to C++17

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This commit is contained in:
Chocobo1
2020-12-19 14:52:01 +08:00
parent a579b4a519
commit d70b893852
19 changed files with 101 additions and 139 deletions
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41
src/base/settingvalue.h
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@@ -48,7 +48,13 @@ public:
T get(const T &defaultValue = {}) const
{
return load(defaultValue);
if constexpr (std::is_enum_v<T>) {
const auto value = SettingsStorage::instance()->loadValue(m_keyName, {}).toString();
return Utils::String::toEnum(value, defaultValue);
}
else {
return SettingsStorage::instance()->loadValue(m_keyName, defaultValue).template value<T>();
}
}
operator T() const
@@ -58,39 +64,14 @@ public:
SettingValue<T> &operator=(const T &value)
{
store(value);
if constexpr (std::is_enum_v<T>)
SettingsStorage::instance()->storeValue(m_keyName, Utils::String::fromEnum(value));
else
SettingsStorage::instance()->storeValue(m_keyName, value);
return *this;
}
private:
// regular load/store pair
template <typename U, typename std::enable_if_t<!std::is_enum<U>::value, int> = 0>
U load(const U &defaultValue) const
{
return SettingsStorage::instance()->loadValue(m_keyName, defaultValue)
.template value<U>();
}
template <typename U, typename std::enable_if_t<!std::is_enum<U>::value, int> = 0>
void store(const U &value)
{
SettingsStorage::instance()->storeValue(m_keyName, value);
}
// load/store pair for enum type, saves literal value of the enum constant
// TODO: merge the load/store functions with `if constexpr` in C++17
template <typename U, typename std::enable_if_t<std::is_enum<U>::value, int> = 0>
U load(const U defaultValue) const
{
return Utils::String::toEnum(load(QString {}), defaultValue);
}
template <typename U, typename std::enable_if_t<std::is_enum<U>::value, int> = 0>
void store(const U value)
{
store(Utils::String::fromEnum(value));
}
const QString m_keyName;
};