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- // Copyright Louis Dionne 2013-2017
- // Distributed under the Boost Software License, Version 1.0.
- // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
- #include <boost/hana/assert.hpp>
- #include <boost/hana/detail/struct_macros.hpp>
- #include <string>
- #include <vector>
- //////////////////////////////////////////////////////////////////////////////
- // BOOST_HANA_PP_NARG
- //////////////////////////////////////////////////////////////////////////////
- static_assert(BOOST_HANA_PP_NARG(x) == 1, "");
- static_assert(BOOST_HANA_PP_NARG(x, x) == 2, "");
- static_assert(BOOST_HANA_PP_NARG(x, x, x) == 3, "");
- static_assert(BOOST_HANA_PP_NARG(x, x, x, x) == 4, "");
- static_assert(BOOST_HANA_PP_NARG(
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x) == 38, "");
- static_assert(BOOST_HANA_PP_NARG(
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x) == 39, "");
- static_assert(BOOST_HANA_PP_NARG(
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x,
- x, x, x, x, x, x, x, x, x, x) == 40, "");
- //////////////////////////////////////////////////////////////////////////////
- // BOOST_HANA_PP_BACK
- //////////////////////////////////////////////////////////////////////////////
- static_assert(BOOST_HANA_PP_BACK(1) == 1, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2) == 2, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2, 3) == 3, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2, 3, 4) == 4, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38, 39) == 39, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38) == 38, "");
- static_assert(BOOST_HANA_PP_BACK(1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38, 39, 40) == 40, "");
- int main() {
- using Vector = std::vector<int>;
- //////////////////////////////////////////////////////////////////////////
- // BOOST_HANA_PP_DROP_BACK
- //////////////////////////////////////////////////////////////////////////
- {
- Vector args = {BOOST_HANA_PP_DROP_BACK(1)};
- BOOST_HANA_RUNTIME_CHECK(args.empty());
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(1, 2)};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{1});
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(1, 2, 3)};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{1, 2});
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(1, 2, 3, 4)};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{1, 2, 3});
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(1, 2, 3, 4, 5)};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{1, 2, 3, 4});
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38, 39
- )};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38
- });
- }{
- Vector args = {BOOST_HANA_PP_DROP_BACK(
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38, 39, 40
- )};
- BOOST_HANA_RUNTIME_CHECK(args == Vector{
- 1, 2, 3, 4, 5, 6, 7, 8, 9, 10,
- 11, 12, 13, 14, 15, 16, 17, 18, 19, 20,
- 21, 22, 23, 24, 25, 26, 27, 28, 29, 30,
- 31, 32, 33, 34, 35, 36, 37, 38, 39
- });
- }
- }
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