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Adding forwarding version of hlpers

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This commit is contained in:
Henry Fredrick Schreiner 2017-03-08 10:44:30 -05:00
parent 33f4c5783a
commit 4af3faef80
1 changed files with 11 additions and 7 deletions
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18
include/CLI/App.hpp
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@ -1048,16 +1048,20 @@ namespace detail {
/// This class is simply to allow tests access to App's protected functions
struct AppFriend {
/// Wrap _parse_short
static void parse_short(App* app, std::vector<std::string> &args) {
return app->_parse_short(args);
/// Wrap _parse_short, perfectly forward arguments and return
template<typename ...Args>
static auto parse_short(App* app, Args && ...args)
-> typename std::result_of<decltype(&App::_parse_short)(App, Args...)>::type {
return app->_parse_short(std::forward<Args>(args)...);
}
/// Wrap _parse_long
static void parse_long(App* app, std::vector<std::string> &args) {
return app->_parse_long(args);
/// Wrap _parse_long, perfectly forward arguments and return
template<typename ...Args>
static auto parse_long(App* app, Args && ...args)
-> typename std::result_of<decltype(&App::_parse_long)(App, Args...)>::type {
return app->_parse_long(std::forward<Args>(args)...);
}
};
}