File: mp_empty_2.cpp

package info (click to toggle)
boost1.90 1.90.0-1
  • links: PTS, VCS
  • area: main
  • in suites:
  • size: 593,120 kB
  • sloc: cpp: 4,190,908; xml: 196,648; python: 34,618; ansic: 23,145; asm: 5,468; sh: 3,774; makefile: 1,161; perl: 1,020; sql: 728; ruby: 676; yacc: 478; java: 77; lisp: 24; csh: 6
file content (40 lines) | stat: -rw-r--r-- 1,132 bytes parent folder | download | duplicates (8)
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
// Copyright 2023 Peter Dimov.
// Distributed under the Boost Software License, Version 1.0.
// https://www.boost.org/LICENSE_1_0.txt

#include <boost/mp11/list.hpp>

#if !defined(BOOST_MP11_HAS_TEMPLATE_AUTO)

#pragma message("Test skipped because BOOST_MP11_HAS_TEMPLATE_AUTO is not defined")
int main() {}

#else

#include <boost/mp11/integral.hpp>
#include <boost/core/lightweight_test_trait.hpp>

template<auto... A> struct L1 {};
template<int... I> struct L2 {};

int main()
{
    using boost::mp11::mp_list;
    using boost::mp11::mp_empty;
    using boost::mp11::mp_true;
    using boost::mp11::mp_false;

    BOOST_TEST_TRAIT_SAME(mp_empty<L1<>>, mp_true);
    BOOST_TEST_TRAIT_SAME(mp_empty<L1<false>>, mp_false);
    BOOST_TEST_TRAIT_SAME(mp_empty<L1<false, 0>>, mp_false);
    BOOST_TEST_TRAIT_SAME(mp_empty<L1<false, 0, std::size_t(0)>>, mp_false);

    BOOST_TEST_TRAIT_SAME(mp_empty<L2<>>, mp_true);
    BOOST_TEST_TRAIT_SAME(mp_empty<L2<0>>, mp_false);
    BOOST_TEST_TRAIT_SAME(mp_empty<L2<0, 1>>, mp_false);
    BOOST_TEST_TRAIT_SAME(mp_empty<L2<0, 1, 2>>, mp_false);

    return boost::report_errors();
}

#endif