contains_tuple.hpp

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#ifndef STAN_MATH_PRIM_META_CONTAINS_TUPLE_HPP
#define STAN_MATH_PRIM_META_CONTAINS_TUPLE_HPP
#include <stan/math/prim/meta/is_vector.hpp>
#include <stan/math/prim/meta/is_tuple.hpp>
 
namespace stan {
namespace internal {
template <typename T>
struct contains_tuple_impl {
  static constexpr bool value = stan::math::is_tuple_v<T>;
};
 
template <typename T, typename... VecArgs>
struct contains_tuple_impl<std::vector<T, VecArgs...>> {
  static constexpr bool value = contains_tuple_impl<T>::value;
};
}  // namespace internal
 
template <typename T>
struct contains_tuple {
  static constexpr bool value
      = internal::contains_tuple_impl<std::decay_t<T>>::value;
};
template <typename T>
inline constexpr bool contains_tuple_v = contains_tuple<std::decay_t<T>>::value;
 
template <typename T>
inline constexpr bool is_std_vector_containing_tuple_v
    = is_std_vector_v<std::decay_t<T>>&& contains_tuple_v<std::decay_t<T>>;
 
}  // namespace stan
 
#endif