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/* Distributed under the OSI-approved BSD 3-Clause License. See accompanying
file LICENSE.rst or https://cmake.org/licensing for details. */
#pragma once
#include "cmConfigure.h" // IWYU pragma: keep
#if defined(__SUNPRO_CC) || defined(__EDG__)
# include <string>
# include <vector>
namespace ArgumentParser {
template <typename T>
struct Maybe;
template <>
struct Maybe<std::string> : public std::string
{
using std::string::basic_string;
using std::string::operator=;
};
template <typename T>
struct MaybeEmpty;
# if defined(__LCC__) && (__EDG_VERSION__ >= 603)
template <>
struct MaybeEmpty<std::vector<std::string>> : public std::vector<std::string>
{
using std::vector<std::string>::vector;
using std::vector<std::string>::operator=;
};
# endif
template <typename T>
struct MaybeEmpty<std::vector<T>> : public std::vector<T>
{
using std::vector<T>::vector;
using std::vector<T>::operator=;
};
template <>
struct MaybeEmpty<std::string> : public std::string
{
using std::string::basic_string;
using std::string::operator=;
};
template <typename T>
struct NonEmpty;
template <typename T>
struct NonEmpty<std::vector<T>> : public std::vector<T>
{
using std::vector<T>::vector;
using std::vector<T>::operator=;
};
template <>
struct NonEmpty<std::string> : public std::string
{
using std::string::basic_string;
using std::string::operator=;
};
} // namespace ArgumentParser
#else
namespace ArgumentParser {
template <typename T>
struct Maybe : public T
{
using T::T;
using T::operator=;
};
template <typename T>
struct MaybeEmpty : public T
{
using T::T;
using T::operator=;
};
template <typename T>
struct NonEmpty : public T
{
using T::T;
using T::operator=;
};
} // namespace ArgumentParser
#endif
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