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Extract enum serialization/parsing functions

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Vladimir Golovnev (Glassez) 2020-12-14 09:58:35 +03:00
parent 77555cd5c2
commit d4a51979bb
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2 changed files with 21 additions and 9 deletions
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12
src/base/settingvalue.h
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@ -34,6 +34,7 @@
#include <QString> #include <QString>
#include "settingsstorage.h" #include "settingsstorage.h"
#include "utils/string.h"
template <typename T> template <typename T>
class CachedSettingValue class CachedSettingValue
@ -94,20 +95,13 @@ private:
template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0> template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0>
U loadValue(const U &defaultValue) U loadValue(const U &defaultValue)
{ {
static_assert(std::is_same<int, typename std::underlying_type<U>::type>::value, return Utils::String::parse(SettingsStorage::instance()->loadValue(m_keyName).toString(), defaultValue);
"Enumeration underlying type has to be int");
bool ok = false;
const U res = static_cast<U>(QMetaEnum::fromType<U>().keyToValue(
SettingsStorage::instance()->loadValue(m_keyName).toString().toLatin1().constData(), &ok));
return ok ? res : defaultValue;
} }
template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0> template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0>
void storeValue(const U &value) void storeValue(const U &value)
{ {
SettingsStorage::instance()->storeValue(m_keyName, SettingsStorage::instance()->storeValue(m_keyName, Utils::String::serialize(value));
QString::fromLatin1(QMetaEnum::fromType<U>().valueToKey(static_cast<int>(value))));
} }
const QString m_keyName; const QString m_keyName;

18
src/base/utils/string.h
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@ -30,6 +30,7 @@
#pragma once #pragma once
#include <QChar> #include <QChar>
#include <QMetaEnum>
#include <QString> #include <QString>
#include <Qt> #include <Qt>
#include <QtContainerFwd> #include <QtContainerFwd>
@ -71,5 +72,22 @@ namespace Utils
TriStateBool parseTriStateBool(const QString &string); TriStateBool parseTriStateBool(const QString &string);
QString join(const QVector<QStringRef> &strings, const QString &separator); QString join(const QVector<QStringRef> &strings, const QString &separator);
template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0>
QString serialize(const U &value)
{
return QString::fromLatin1(QMetaEnum::fromType<U>().valueToKey(static_cast<int>(value)));
}
template <typename U, typename std::enable_if<std::is_enum<U>::value, int>::type = 0>
U parse(const QString &serializedValue, const U &defaultValue)
{
static_assert(std::is_same<int, typename std::underlying_type<U>::type>::value,
"Enumeration underlying type has to be int.");
bool ok = false;
const U value = static_cast<U>(QMetaEnum::fromType<U>().keyToValue(serializedValue.toLatin1().constData(), &ok));
return (ok ? value : defaultValue);
}
} }
} }