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/******************************************************************************
* ____ _ _____ *
* / ___| / \ | ___| C++ *
* | | / _ \ | |_ Actor *
* | |___ / ___ \| _| Framework *
* \____/_/ \_|_| *
* *
* Copyright 2011-2018 Dominik Charousset *
* *
* Distributed under the terms and conditions of the BSD 3-Clause License or *
* (at your option) under the terms and conditions of the Boost Software *
* License 1.0. See accompanying files LICENSE and LICENSE_ALTERNATIVE. *
* *
* If you did not receive a copy of the license files, see *
* http://opensource.org/licenses/BSD-3-Clause and *
* http://www.boost.org/LICENSE_1_0.txt. *
******************************************************************************/
#include "caf/config.hpp"
#define CAF_SUITE metaprogramming
#include "caf/test/unit_test.hpp"
#include <string>
#include <cstdint>
#include <typeinfo>
#include <type_traits>
#include "caf/all.hpp"
#include "caf/detail/int_list.hpp"
#include "caf/detail/type_list.hpp"
using namespace caf;
using namespace caf::detail;
namespace {
// misc
template <class T>
struct is_int : std::false_type {};
template <>
struct is_int<int> : std::true_type {};
} // namespace
CAF_TEST(metaprogramming) {
using std::is_same;
using l1 = type_list<int, float, std::string>;
using r1 = tl_reverse<l1>::type;
CAF_CHECK((is_same<int, tl_at<l1, 0>::type>::value));
CAF_CHECK((is_same<float, tl_at<l1, 1>::type>::value));
CAF_CHECK((is_same<std::string, tl_at<l1, 2>::type>::value));
CAF_CHECK_EQUAL(3u, tl_size<l1>::value);
CAF_CHECK_EQUAL(tl_size<r1>::value, tl_size<l1>::value);
CAF_CHECK((is_same<tl_at<l1, 0>::type, tl_at<r1, 2>::type>::value));
CAF_CHECK((is_same<tl_at<l1, 1>::type, tl_at<r1, 1>::type>::value));
CAF_CHECK((is_same<tl_at<l1, 2>::type, tl_at<r1, 0>::type>::value));
using l2 = tl_concat<type_list<int>, l1>::type;
CAF_CHECK((is_same<int, tl_head<l2>::type>::value));
CAF_CHECK((is_same<l1, tl_tail<l2>::type>::value));
CAF_CHECK_EQUAL((detail::tl_count<l1, is_int>::value), 1u);
CAF_CHECK_EQUAL((detail::tl_count<l2, is_int>::value), 2u);
using il0 = int_list<0, 1, 2, 3, 4, 5>;
using il1 = int_list<4, 5>;
using il2 = il_right<il0, 2>::type;
CAF_CHECK((is_same<il2, il1>::value));
/* test tl_subset_of */ {
using list_a = type_list<int, float, double>;
using list_b = type_list<float, int, double, std::string>;
CAF_CHECK((tl_subset_of<list_a, list_b>::value));
CAF_CHECK(!(tl_subset_of<list_b, list_a>::value));
CAF_CHECK((tl_subset_of<list_a, list_a>::value));
CAF_CHECK((tl_subset_of<list_b, list_b>::value));
}
}
template <class T>
struct token { };
template <class T>
std::ostream& operator<<(std::ostream& out, token<T>) {
return out << typeid(T).name();
}
template <class T, class U>
constexpr bool operator==(token<T>, token<U>) {
return std::is_same<T, U>::value;
}
template <class T>
constexpr token<T> tk() {
return {};
}
template <class T, class U>
constexpr token<response_type_unbox_t<T, U>> res(token<T>, token<U>) {
return {};
}
template <class T, class U>
constexpr token<none_t> res(T, U) {
return {};
}
template <class T, class U>
constexpr token<composed_type_t<T, U>> dot_op(token<T>, token<U>) {
return {};
}
// -- lift a list of callback types into a list of MPIs
// -- typed behavior dummy class
template <class... Ifs>
struct typed_beh {
template <class... Ts>
typed_beh(Ts&&... xs) {
assign(std::forward<Ts>(xs)...);
}
template <class... Ts>
typename std::enable_if<sizeof...(Ifs) == sizeof...(Ts)>::type
assign(Ts...) {
using expected = type_list<Ifs...>;
using found = type_list<deduce_mpi_t<Ts>...>;
pos = interface_mismatch_t<found, expected>::value;
valid = pos == sizeof...(Ifs);
}
template <class... Ts>
typename std::enable_if<sizeof...(Ifs) != sizeof...(Ts)>::type
assign(Ts...) {
// too many or too few handlers present
pos = -1;
valid = false;
}
bool valid = false;
int pos = 0;
};
using bi_pair = std::pair<bool, int>;
template <class TypedBehavior, class... Ts>
bi_pair tb_assign(Ts&&... xs) {
TypedBehavior x{std::forward<Ts>(xs)...};
return {x.valid, x.pos};
}
namespace std {
ostream& operator<<(ostream& out, const pair<bool, int>& x) {
// do not modify stream with boolalpha
return out << '(' << (x.first ? "true" : "false") << ", " << x.second << ')';
}
} // namespace std
CAF_TEST(typed_behavior_assignment) {
using bh1 = typed_beh<replies_to<int>::with<double>,
replies_to<double, double>::with<int, int>>;
// compatible handlers resulting in perfect match
auto f1 = [=](int) { return 0.; };
auto f2 = [=](double, double) { return std::make_tuple(0, 0); };
// compatible handlers using skip
auto g1 = [=](int) { return skip(); };
auto g2 = [=](double, double) { return skip(); };
// incompatbile handlers
auto e1 = [=](int) { return 0.f; };
auto e2 = [=](double, double) { return std::make_tuple(0.f, 0.f); };
// omit one handler
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(f1));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(f2));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(g1));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(g2));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(e1));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh1>(e2));
// any valid alteration of (f1, f2, g1, g2)
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(f1, f2));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(f2, f1));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(g1, g2));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(g2, g1));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(g1, f2));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(f2, g1));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(f1, g2));
CAF_CHECK_EQUAL(bi_pair(true, 2), tb_assign<bh1>(g2, f1));
// any invalid alteration of (f1, f2, g1, g2)
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f1, g1));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(g1, f1));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f2, g2));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(g2, g2));
// any invalid alteration of (f1, f2, e1, e2)
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f1, e1));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f1, e2));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e1, f1));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e1, f2));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e1, e2));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f2, e1));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh1>(f2, e2));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e2, f1));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e2, f2));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh1>(e2, e1));
using bh2 = typed_beh<reacts_to<int>,
reacts_to<int, int>,
reacts_to<int, int, int>,
reacts_to<int, int, int, int>,
reacts_to<int, int, int, int, int>,
reacts_to<int, int, int, int, int, int>,
reacts_to<int, int, int, int, int, int, int>,
reacts_to<int, int, int, int, int, int, int, int>,
reacts_to<int, int, int, int, int,
int, int, int, int>,
reacts_to<int, int, int, int, int,
int, int, int, int, int>>;
auto h0 = [](int) {};
auto h1 = [](int, int) {};
auto h2 = [](int, int, int) {};
auto h3 = [](int, int, int, int) {};
auto h4 = [](int, int, int, int, int) {};
auto h5 = [](int, int, int, int, int, int) {};
auto h6 = [](int, int, int, int, int, int, int) {};
auto h7 = [](int, int, int, int, int, int, int, int) {};
auto h8 = [](int, int, int, int, int, int, int, int, int) {};
auto h9 = [](int, int, int, int, int, int, int, int, int, int) {};
CAF_CHECK_EQUAL(bi_pair(true, 10), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 0), tb_assign<bh2>(e1, h1, h2, h3, h4,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 1), tb_assign<bh2>(h0, e1, h2, h3, h4,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 2), tb_assign<bh2>(h0, h1, e1, h3, h4,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 3), tb_assign<bh2>(h0, h1, h2, e1, h4,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 4), tb_assign<bh2>(h0, h1, h2, h3, e1,
h5, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 5), tb_assign<bh2>(h0, h1, h2, h3, h4,
e1, h6, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 6), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, e1, h7, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 7), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, h6, e1, h8, h9));
CAF_CHECK_EQUAL(bi_pair(false, 8), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, h6, h7, e1, h9));
CAF_CHECK_EQUAL(bi_pair(false, 9), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, h6, h7, h8, e1));
CAF_CHECK_EQUAL(bi_pair(false, -1), tb_assign<bh2>(h0, h1, h2, h3, h4,
h5, h6, h7, h8));
}
struct foo {};
struct bar {};
bool operator==(const bar&, const bar&);
class baz {
public:
baz() = default;
explicit baz(std::string);
friend bool operator==(const baz&, const baz&);
private:
std::string str_;
};
CAF_TEST(is_comparable) {
CAF_CHECK((is_comparable<double, std::string>::value) == false);
CAF_CHECK((is_comparable<foo, foo>::value) == false);
CAF_CHECK((is_comparable<bar, bar>::value) == true);
CAF_CHECK((is_comparable<double, bar>::value) == false);
CAF_CHECK((is_comparable<bar, double>::value) == false);
CAF_CHECK((is_comparable<baz, baz>::value) == true);
CAF_CHECK((is_comparable<double, baz>::value) == false);
CAF_CHECK((is_comparable<baz, double>::value) == false);
CAF_CHECK((is_comparable<std::string, baz>::value) == false);
CAF_CHECK((is_comparable<baz, std::string>::value) == false);
}
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