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refs #876 All metaclass mixins now directly access the metamembers.

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This avoids bloating CMetaClassIntrospector with inconvenient convenience methods.
This commit is contained in:
Mathew Sutcliffe
2017-02-10 02:18:25 +00:00
parent 0e0f068471
commit 7b8d88876f
6 changed files with 30 additions and 79 deletions
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65
src/blackmisc/metaclass.h
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@@ -223,57 +223,16 @@ namespace BlackMisc
template <typename Flags>
static auto without(Flags) { return filter(MaskSequence<(! members().at(index<Is>()).has(Flags()))...>()); }
//! For each member in object, pass member as argument to visitor function.
//! @{
//! For each metamember in metaclass, pass metamember as argument to visitor function.
template <typename F>
static void forEachMember(T &object, F &&visitor)
static void forEachMember(F &&visitor)
{
forEachImpl([ & ](auto &&member, auto) { std::forward<F>(visitor)(member.in(object)); });
// parameter pack swallow idiom
static_cast<void>(std::initializer_list<int>
{
(static_cast<void>(std::forward<F>(visitor)(members().at(index<Is>()))), 0)...
});
}
template <typename F>
static void forEachMember(const T &object, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto) { std::forward<F>(visitor)(member.in(object)); });
}
//! @}
//! For each member in object pair, pass member pair as arguments to visitor function.
//! @{
template <typename F>
static void forEachMemberPair(T &left, T &right, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto flags) { std::forward<F>(visitor)(member.in(left), member.in(right), flags); });
}
template <typename F>
static void forEachMemberPair(const T &left, T &right, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto flags) { std::forward<F>(visitor)(member.in(left), member.in(right), flags); });
}
template <typename F>
static void forEachMemberPair(T &left, const T &right, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto flags) { std::forward<F>(visitor)(member.in(left), member.in(right), flags); });
}
template <typename F>
static void forEachMemberPair(const T &left, const T &right, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto flags) { std::forward<F>(visitor)(member.in(left), member.in(right), flags); });
}
//! @}
//! For each member in object, pass member and its name as arguments to visitor function.
//! @{
template <typename F>
static void forEachMemberName(T &object, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto) { std::forward<F>(visitor)(member.in(object), member.latin1Name()); });
}
template <typename F>
static void forEachMemberName(const T &object, F &&visitor)
{
forEachImpl([ & ](auto &&member, auto) { std::forward<F>(visitor)(member.in(object), member.latin1Name()); });
}
//! @}
private:
template <bool... Mask>
@@ -286,16 +245,6 @@ namespace BlackMisc
using index = std::integral_constant<size_t, I>;
constexpr static auto members() BLACK_TRAILING_RETURN(MetaClass::getMemberList()) { return MetaClass::getMemberList(); }
template <typename F>
static void forEachImpl(F &&visitor)
{
// parameter pack swallow idiom
static_cast<void>(std::initializer_list<int>
{
(static_cast<void>(std::forward<F>(visitor)(members().at(index<Is>()), MetaFlags<members().at(index<Is>()).m_flags>())), 0)...
});
}
};
namespace Private