mirror of
https://github.com/boostorg/callable_traits.git
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107 lines
2.6 KiB
C++
107 lines
2.6 KiB
C++
/*
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Copyright Barrett Adair 2016
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Distributed under the Boost Software License, Version 1.0.
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(See accompanying file LICENSE.md or copy at http://boost.org/LICENSE_1_0.txt)
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*/
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#include <cassert>
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#include <type_traits>
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#include <functional>
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#include <iostream>
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#include <sstream>
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#include <memory>
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#include <iostream>
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#include <cstdint>
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#include <callable_traits/callable_traits.hpp>
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#ifndef CT_ASSERT
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#define CT_ASSERT(...) static_assert(__VA_ARGS__, #__VA_ARGS__)
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#endif //CT_ASSERT
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using namespace std::placeholders;
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namespace ct = callable_traits;
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struct Vampire {};
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struct Robot {};
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struct Animal {};
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struct Dog : Animal {};
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struct Poodle : Dog {};
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struct VampireRobotPoodle : Poodle, Robot, Vampire {};
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auto take_vampire(const Vampire&) {
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return 0;
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}
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auto take_robot(const Robot&) {
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return 0;
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}
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auto take_dog(const Dog&) {
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return 0;
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}
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auto take_vampire_robot_poodle(const VampireRobotPoodle&) {
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return 0;
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}
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int foo(int, int, int, int) {
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return 0;
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}
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int main() {
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{
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auto bind_expr = ct::bind_expr(
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&foo,
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ct::bind_expr(&take_vampire, _1),
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ct::bind_expr(&take_robot, _1),
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ct::bind_expr(&take_dog, _1),
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ct::bind_expr(&take_vampire_robot_poodle, _1)
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);
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auto bind_obj = std::bind(
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&foo,
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std::bind(&take_vampire, _1),
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std::bind(&take_robot, _1),
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std::bind(&take_dog, _1),
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std::bind(&take_vampire_robot_poodle, _1)
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);
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using args = ct::args<decltype(bind_expr)>;
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using expected_args = std::tuple<const VampireRobotPoodle&>;
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CT_ASSERT(std::is_same<args, expected_args>::value);
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VampireRobotPoodle vampire_robot_poodle;
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assert(bind_obj(vampire_robot_poodle) == 0);
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}
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{
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auto bind_expr = ct::bind_expr(
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&foo,
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ct::bind_expr(&take_vampire_robot_poodle, _1),
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ct::bind_expr(&take_vampire, _1),
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ct::bind_expr(&take_robot, _1),
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ct::bind_expr(&take_dog, _1)
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);
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auto bind_obj = std::bind(
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&foo,
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std::bind(&take_vampire_robot_poodle, _1),
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std::bind(&take_vampire, _1),
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std::bind(&take_robot, _1),
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std::bind(&take_dog, _1)
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);
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using args = ct::args<decltype(bind_expr)>;
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using expected_args = std::tuple<const VampireRobotPoodle&>;
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CT_ASSERT(std::is_same<args, expected_args>::value);
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VampireRobotPoodle vampire_robot_poodle;
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assert(bind_obj(vampire_robot_poodle) == 0);
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}
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return 0;
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} |