forked from boostorg/unordered
Braden Ganetsky
f1e2fa38b0
* Add missing compile-only tests in CMake * Rewrite the FOA containers' CFOA constructors so that a class with a template conversion operator does not instantiate the CFOA container * Rewrite the CFOA containers' FOA constructors so that a class with a template conversion operator does not instantiate the FOA container
47 lines
1.6 KiB
C++
47 lines
1.6 KiB
C++
// Copyright 2026 Braden Ganetsky
|
|
// Distributed under the Boost Software License, Version 1.0.
|
|
// https://www.boost.org/LICENSE_1_0.txt
|
|
|
|
#if !defined(BOOST_UNORDERED_FOA_TESTS)
|
|
#error "This test is only for the FOA-style conatiners"
|
|
#endif
|
|
|
|
#include <boost/static_assert.hpp>
|
|
#include <boost/unordered/unordered_flat_map.hpp>
|
|
#include <boost/unordered/unordered_flat_set.hpp>
|
|
#include <boost/unordered/unordered_node_map.hpp>
|
|
#include <boost/unordered/unordered_node_set.hpp>
|
|
// Don't include the CFOA headers here!
|
|
|
|
using flat_map = boost::unordered::unordered_flat_map<int, int>;
|
|
using flat_set = boost::unordered::unordered_flat_set<int>;
|
|
using node_map = boost::unordered::unordered_node_map<int, int>;
|
|
using node_set = boost::unordered::unordered_node_set<int>;
|
|
|
|
struct constrained_template_converter
|
|
{
|
|
struct dummy
|
|
{
|
|
};
|
|
template <class T, typename std::enable_if<
|
|
std::is_constructible<T, dummy>::value, int>::type = 0>
|
|
operator T() const
|
|
{
|
|
return T{};
|
|
}
|
|
};
|
|
|
|
// Check whether the corresponding CFOA container gets instantiated.
|
|
// The CFOA headers aren't included, so this would fail to compile if the CFOA
|
|
// container was instantiated.
|
|
BOOST_STATIC_ASSERT(
|
|
(!std::is_constructible<flat_map, constrained_template_converter>::value));
|
|
BOOST_STATIC_ASSERT(
|
|
(!std::is_constructible<flat_set, constrained_template_converter>::value));
|
|
BOOST_STATIC_ASSERT(
|
|
(!std::is_constructible<node_map, constrained_template_converter>::value));
|
|
BOOST_STATIC_ASSERT(
|
|
(!std::is_constructible<node_set, constrained_template_converter>::value));
|
|
|
|
int main() { return 0; }
|