flightsimulatorplatfrom/pilotclient
1
0
Fork 0
mirror of https://github.com/swift-project/pilotclient.git synced 2026-04-15 09:15:34 +08:00
Code Issues Packages Projects Releases Wiki Activity

Replace an enable_if with an if constexpr

Browse Source
This commit is contained in:
Mat Sutcliffe
2021-12-31 17:03:07 +00:00
parent 8f0271aa2a
commit 8f11e42b15
2 changed files with 21 additions and 26 deletions
Download Patch File Download Diff File Expand all files Collapse all files

41
src/blackmisc/memotable.h
View File

@@ -56,13 +56,13 @@ namespace BlackMisc
class CMemoizer : private CMemoTable<Ts>...
{
public:
//! If T is in Ts, return the index of member in the memo table.
template <typename T, std::enable_if_t<TIsOneOf<T, Ts...>::value, int> = 0>
int maybeMemoize(const T &member) { return this->CMemoTable<T>::getIndex(member); }
//! If T is not in Ts, return member.
template <typename T, std::enable_if_t<! TIsOneOf<T, Ts...>::value, int> = 0>
const T &maybeMemoize(const T &member) { return member; }
//! If T is in Ts, return the index of member in the memo table. Otherwise, return member.
template <typename T>
decltype(auto) maybeMemoize(const T &member)
{
if constexpr ((std::is_same_v<T, Ts> || ...)) { return this->CMemoTable<T>::getIndex(member); }
else { return std::as_const(member); }
}
//! Return the values in the T table as a flat list.
template <typename T>
@@ -78,23 +78,24 @@ namespace BlackMisc
CSequence<T> &getTable() { return *this; }
//! If T is in Ts, return proxy that will assign to member through the value at the given index in the flat list.
template <typename T, std::enable_if_t<TIsOneOf<T, Ts...>::value, int> = 0>
//! Otherwise, return member as std::reference_wrapper.
template <typename T>
auto maybeUnmemoize(T &member) const
{
struct Memo // clazy:exclude=rule-of-three
if constexpr ((std::is_same_v<T, Ts> || ...))
{
int index;
T &member;
const CSequence<T> &list;
int &get() { return index; }
~Memo() { if (index >= 0) { member = list[index]; } }
};
return Memo { -1, member, static_cast<const CSequence<T> &>(*this) };
struct Memo // clazy:exclude=rule-of-three
{
int index;
T &member;
const CSequence<T> &list;
int &get() { return index; }
~Memo() { if (index >= 0) { member = list[index]; } }
};
return Memo { -1, member, static_cast<const CSequence<T> &>(*this) };
}
else { return std::ref(member); }
}
//! If T is not in Ts, return member as std::reference_wrapper.
template <typename T, std::enable_if_t<! TIsOneOf<T, Ts...>::value, int> = 0>
auto maybeUnmemoize(T &member) const { return std::ref(member); }
};
};
}

6
src/blackmisc/typetraits.h
View File

@@ -154,12 +154,6 @@ namespace BlackMisc
std::declval<T &>().unmarshallFromDbus(std::declval<const QDBusArgument &>()))>> : public std::true_type {};
//! \endcond
/*!
* Trait that detects if a type is a member of a parameter pack.
*/
template <typename T, typename... Ts>
struct TIsOneOf : public std::disjunction<std::is_same<T, Ts>...> {};
/*!
* Trait that detects if a type is QPrivateSignal.
*/