audacity::sqlite::details::SQLiteFunction< std::function< R(Args...)> > Struct Template Reference

#include <Function.h>

Static Public Member Functions
static SQLiteFunctorWithArgs	ToSQLiteFunctorWithArgs (std::function< R(Args...)> callback)

Static Public Attributes
static constexpr std::size_t	Arity = sizeof...(Args)

Detailed Description

template<typename R, typename... Args>
struct audacity::sqlite::details::SQLiteFunction< std::function< R(Args...)> >

Definition at line 73 of file Function.h.

Member Function Documentation

ToSQLiteFunctorWithArgs()

template<typename R , typename... Args>

static SQLiteFunctorWithArgs audacity::sqlite::details::SQLiteFunction< std::function< R(Args...)> >::ToSQLiteFunctorWithArgs ( std::function< R(Args...)>  callback )

inlinestatic

Definition at line 77 of file Function.h.

   {
      return [function = std::move(callback)](
                sqlite3_context* context, int argc, sqlite3_value** argv)
      {
         if (argc != sizeof...(Args))
         {
            SetSQLiteFunctionError(context, "Invalid number of arguments");
            return;
         }
 
         if constexpr (std::is_same_v<R, void>)
         {
            std::apply(
               function, SQLiteValuesToTuple<Args...>(
                            argv, std::make_index_sequence<sizeof...(Args)>()));
         }
         else
         {
            SetSQLiteFunctionResult(
               context,
               std::apply(
                  function,
                  SQLiteValuesToTuple<Args...>(
                     argv, std::make_index_sequence<sizeof...(Args)>())));
         }
      };
   }

References CommandLineArgs::argc, CommandLineArgs::argv, audacity::sqlite::details::SetSQLiteFunctionError(), and audacity::sqlite::details::SetSQLiteFunctionResult().

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Member Data Documentation

Arity

template<typename R , typename... Args>

constexpr std::size_t audacity::sqlite::details::SQLiteFunction< std::function< R(Args...)> >::Arity = sizeof...(Args)

staticconstexpr

Definition at line 75 of file Function.h.

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The documentation for this struct was generated from the following file:

• Function.h