maybe_void.h File Reference

#include <type_traits>
#include <variant>

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Classes
struct	freetensor::TypeOrMonostate< T >
struct	freetensor::TypeOrMonostate< void >

Namespaces
namespace	freetensor

Macros
#define	MAYBE_VOID_ASSIGN(name, expr)
#define	MAYBE_VOID(name, expr)

Macro Definition Documentation

MAYBE_VOID

#define MAYBE_VOID	(		name,
			expr
	)

Value:

    [[maybe_unused]] typename TypeOrMonostate<decltype(expr)>::type name;      \
    MAYBE_VOID_ASSIGN(name, expr)

Expand to auto name = expr for normal types, and expand to expr for void

MAYBE_VOID_ASSIGN

#define MAYBE_VOID_ASSIGN	(		name,
			expr
	)

Value:

    if constexpr (std::is_same_v<decltype(expr), void>) {                      \
        expr;                                                                  \
    } else {                                                                   \
        name = expr;                                                           \
    }

Expand to name = expr for normal types, and expand to expr for void