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Code Issues Releases Wiki Activity

ircd::mods: Improve return type deduction.

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This commit is contained in:
Jason Volk 2019-02-09 03:44:43 -08:00
parent c5d993f7c5
commit 6df8fcf244
3 changed files with 15 additions and 11 deletions
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14
include/ircd/mods/import.h
View file

@ -36,8 +36,8 @@ struct ircd::mods::import
void reload();
public:
template<class... args> auto operator()(args&&... a) const;
template<class... args> auto operator()(args&&... a);
template<class... args> decltype(auto) operator()(args&&... a) const;
template<class... args> decltype(auto) operator()(args&&... a);
const T *operator->() const;
const T &operator*() const;
@ -157,22 +157,24 @@ const
template<class T>
template<class... args>
auto
decltype(auto)
ircd::mods::import<T>::operator()(args&&... a)
{
if(unlikely(!*this))
reload();
return sym_ptr::operator()<T>(std::forward<args>(a)...);
using R = decltype(get<T>()(a...));
return sym_ptr::operator()<T, R>(std::forward<args>(a)...);
}
template<class T>
template<class... args>
auto
decltype(auto)
ircd::mods::import<T>::operator()(args&&... a)
const
{
return sym_ptr::operator()<T>(std::forward<args>(a)...);
using R = decltype(get<T>()(a...));
return sym_ptr::operator()<T, R>(std::forward<args>(a)...);
}
template<class T>

10
include/ircd/mods/sym_ptr.h
View file

@ -30,12 +30,12 @@ class ircd::mods::sym_ptr
template<class T> const T *get() const;
template<class T> const T *operator->() const;
template<class T> const T &operator*() const;
template<class T, class... args> auto operator()(args&&... a) const;
template<class T, class R, class... args> R operator()(args&&... a) const;
template<class T> T *get();
template<class T> T *operator->();
template<class T> T &operator*();
template<class T, class... args> auto operator()(args&&... a);
template<class T, class R, class... args> R operator()(args&&... a);
explicit sym_ptr(mod &, const string_view &symname);
sym_ptr(module, const string_view &symname);
@ -44,8 +44,9 @@ class ircd::mods::sym_ptr
};
template<class T,
class R,
class... args>
auto
R
ircd::mods::sym_ptr::operator()(args&&... a)
{
return (operator*<T>())(std::forward<args>(a)...);
@ -79,8 +80,9 @@ ircd::mods::sym_ptr::get()
}
template<class T,
class R,
class... args>
auto
R
ircd::mods::sym_ptr::operator()(args&&... a)
const
{

2
modules/console.cc
View file

@ -193,7 +193,7 @@ _console_command(opt &out,
const auto &ptr{cmd->ptr};
using prototype = bool (struct opt &, const string_view &);
return ptr.operator()<prototype>(out, args);
return ptr.operator()<prototype, bool>(out, args);
}
/// This function may be linked and called by those wishing to execute a