ceph/src/boost/libs/hana/test/range/find.cpp

   1 // Copyright Louis Dionne 2013-2017
   2 // Distributed under the Boost Software License, Version 1.0.
   3 // (See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
   4
   5 #include <boost/hana/assert.hpp>
   6 #include <boost/hana/core/make.hpp>
   7 #include <boost/hana/equal.hpp>
   8 #include <boost/hana/find.hpp>
   9 #include <boost/hana/integral_constant.hpp>
  10 #include <boost/hana/optional.hpp>
  11 #include <boost/hana/range.hpp>
  12
  13 #include <support/cnumeric.hpp>
  14 namespace hana = boost::hana;
  15
  16
  17 int main() {
  18     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  19         hana::find(hana::make_range(hana::int_c<0>, hana::int_c<0>), cnumeric<int, 0>),
  20         hana::nothing
  21     ));
  22
  23     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  24         hana::find(hana::make_range(hana::int_c<0>, hana::int_c<1>), cnumeric<int, 0>),
  25         hana::just(hana::int_c<0>)
  26     ));
  27
  28     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  29         hana::find(hana::make_range(hana::int_c<0>, hana::int_c<10>), cnumeric<int, 3>),
  30         hana::just(hana::int_c<3>)
  31     ));
  32
  33     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  34         hana::find(hana::make_range(hana::int_c<0>, hana::int_c<10>), cnumeric<int, 9>),
  35         hana::just(hana::int_c<9>)
  36     ));
  37
  38     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  39         hana::find(hana::make_range(hana::int_c<-10>, hana::int_c<10>), cnumeric<int, -10>),
  40         hana::just(hana::int_c<-10>)
  41     ));
  42
  43     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  44         hana::find(hana::make_range(hana::int_c<-10>, hana::int_c<10>), cnumeric<int, -5>),
  45         hana::just(hana::int_c<-5>)
  46     ));
  47
  48     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  49         hana::find(hana::make_range(hana::int_c<-10>, hana::int_c<0>), cnumeric<int, 3>),
  50         hana::nothing
  51     ));
  52
  53     BOOST_HANA_CONSTANT_CHECK(hana::equal(
  54         hana::find(hana::make_range(hana::int_c<0>, hana::int_c<10>), cnumeric<int, 15>),
  55         hana::nothing
  56     ));
  57 }