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#ifndef TYPEASVALUE_SRC_UTILITY_PREDICATE_H_
#define TYPEASVALUE_SRC_UTILITY_PREDICATE_H_
#include "conditional/if.h"
#include "operation/logic.h"
#include "function/apply.h"
namespace tav {
namespace utility {
template <
template<typename> class Predicate,
typename Surrogate
>
struct predicate_assurance {
template <typename Value>
using assure = If<
Eval<Predicate<Value>>,
Value,
Surrogate
>;
};
template <
template<typename> class Predicate,
template<typename> class Charge,
typename Surrogate
>
struct predicate_guard {
template <typename Value>
using check = Eval<If<
Eval<Predicate<Value>>,
Apply<Charge, Value>,
Surrogate
>>;
};
template <template<typename> class Predicate>
struct predicate_negator {
template <typename Element>
using function = Not<Predicate<Element>>;
};
}
}
#endif // TYPEASVALUE_SRC_UTILITY_PREDICATE_H_
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