//===----------------------------------------------------------------------===//
//
// Part of the LLVM Project, under the Apache License v2.0 with LLVM Exceptions.
// See https://llvm.org/LICENSE.txt for license information.
// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
//
//===----------------------------------------------------------------------===//
// Utility functions to test comparisons on containers.
#ifndef TEST_CONTAINER_COMPARISONS
#define TEST_CONTAINER_COMPARISONS
#include <functional>
#include <set>
#include "test_comparisons.h"
// Implementation detail of `test_sequence_container_spaceship`
template <template <typename...> typename Container, typename Elem, typename Order>
constexpr void test_sequence_container_spaceship_with_type() {
// Empty containers
{
Container<Elem> l1;
Container<Elem> l2;
assert(testOrder(l1, l2, Order::equivalent));
}
// Identical contents
{
Container<Elem> l1{1, 1};
Container<Elem> l2{1, 1};
assert(testOrder(l1, l2, Order::equivalent));
}
// Less, due to contained values
{
Container<Elem> l1{1, 1};
Container<Elem> l2{1, 2};
assert(testOrder(l1, l2, Order::less));
}
// Greater, due to contained values
{
Container<Elem> l1{1, 3};
Container<Elem> l2{1, 2};
assert(testOrder(l1, l2, Order::greater));
}
// Shorter list
{
Container<Elem> l1{1};
Container<Elem> l2{1, 2};
assert(testOrder(l1, l2, Order::less));
}
// Longer list
{
Container<Elem> l1{1, 2};
Container<Elem> l2{1};
assert(testOrder(l1, l2, Order::greater));
}
// Unordered
if constexpr (std::is_same_v<Elem, PartialOrder>) {
Container<Elem> l1{1, std::numeric_limits<int>::min()};
Container<Elem> l2{1, 2};
assert(testOrder(l1, l2, Order::unordered));
}
}
// Tests the `operator<=>` on sequence containers
template <template <typename...> typename Container>
constexpr bool test_sequence_container_spaceship() {
// The container should fulfill `std::three_way_comparable`
static_assert(std::three_way_comparable<Container<int>>);
// Test different comparison categories
test_sequence_container_spaceship_with_type<Container, int, std::strong_ordering>();
test_sequence_container_spaceship_with_type<Container, StrongOrder, std::strong_ordering>();
test_sequence_container_spaceship_with_type<Container, WeakOrder, std::weak_ordering>();
test_sequence_container_spaceship_with_type<Container, PartialOrder, std::partial_ordering>();
// `LessAndEqComp` does not have `operator<=>`. Ordering is synthesized based on `operator<`
test_sequence_container_spaceship_with_type<Container, LessAndEqComp, std::weak_ordering>();
// Thanks to SFINAE, the following is not a compiler error but returns `false`
struct NonComparable {};
static_assert(!std::three_way_comparable<Container<NonComparable>>);
return true;
}
// Implementation detail of `test_sequence_container_adaptor_spaceship`
template <template <typename...> typename ContainerAdaptor,
template <typename...>
typename Container,
typename Elem,
typename Order>
constexpr void test_sequence_container_adaptor_spaceship_with_type() {
// Empty containers
{
Container<Elem> l1;
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2;
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::equivalent));
}
// Identical contents
{
Container<Elem> l1{1, 1};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1, 1};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::equivalent));
}
// Less, due to contained values
{
Container<Elem> l1{1, 1};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1, 2};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::less));
}
// Greater, due to contained values
{
Container<Elem> l1{1, 3};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1, 2};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::greater));
}
// Shorter list
{
Container<Elem> l1{1};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1, 2};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::less));
}
// Longer list
{
Container<Elem> l1{1, 2};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::greater));
}
// Unordered
if constexpr (std::is_same_v<Elem, PartialOrder>) {
Container<Elem> l1{1, std::numeric_limits<int>::min()};
ContainerAdaptor<Elem, Container<Elem>> ca1{l1};
Container<Elem> l2{1, 2};
ContainerAdaptor<Elem, Container<Elem>> ca2{l2};
assert(testOrder(ca1, ca2, Order::unordered));
}
}
// Tests the `operator<=>` on sequence container adaptors
template <template <typename...> typename ContainerAdaptor, template <typename...> typename Container>
constexpr bool test_sequence_container_adaptor_spaceship() {
// Thanks to SFINAE, the following is not a compiler error but returns `false`
struct NonComparable {};
static_assert(!std::three_way_comparable<ContainerAdaptor<NonComparable>>);
// The container should fulfill `std::three_way_comparable`
static_assert(std::three_way_comparable<ContainerAdaptor<int, Container<int>>>);
// Test different comparison categories
test_sequence_container_adaptor_spaceship_with_type<ContainerAdaptor, Container, int, std::strong_ordering>();
test_sequence_container_adaptor_spaceship_with_type<ContainerAdaptor, Container, StrongOrder, std::strong_ordering>();
test_sequence_container_adaptor_spaceship_with_type<ContainerAdaptor, Container, WeakOrder, std::weak_ordering>();
test_sequence_container_adaptor_spaceship_with_type<ContainerAdaptor,
Container,
PartialOrder,
std::partial_ordering>();
// `LessAndEqComp` does not have `operator<=>`. Ordering is synthesized based on `operator<`
test_sequence_container_adaptor_spaceship_with_type<ContainerAdaptor, Container, LessAndEqComp, std::weak_ordering>();
return true;
}
// Implementation detail of `test_ordered_map_container_spaceship`
template <template <typename...> typename Container, typename Key, typename Val, typename Order, typename Compare>
constexpr void test_ordered_map_container_spaceship_with_type(Compare comp) {
// Empty containers
{
Container<Key, Val, Compare> l1{{}, comp};
Container<Key, Val, Compare> l2{{}, comp};
assert(testOrder(l1, l2, Order::equivalent));
}
// Identical contents
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 1}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 1}}, comp};
assert(testOrder(l1, l2, Order::equivalent));
}
// Less, due to contained values
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 1}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::less));
}
// Greater, due to contained values
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 3}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::greater));
}
// Shorter list
{
Container<Key, Val, Compare> l1{{{1, 1}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::less));
}
// Longer list
{
Container<Key, Val, Compare> l1{{{1, 2}, {2, 2}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}}, comp};
assert(testOrder(l1, l2, Order::greater));
}
// Unordered
if constexpr (std::is_same_v<Val, PartialOrder>) {
Container<Key, Val, Compare> l1{{{1, 1}, {2, std::numeric_limits<int>::min()}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::unordered));
}
// Identical contents
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 1}, {2, 2}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::equivalent));
Container<Key, Val, Compare> l3{{{1, 1}, {2, 1}, {2, 2}}, comp};
Container<Key, Val, Compare> l4{{{2, 1}, {2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::equivalent));
}
// Less, due to contained values
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 1}, {2, 1}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::less));
Container<Key, Val, Compare> l3{{{1, 1}, {2, 1}, {2, 1}}, comp};
Container<Key, Val, Compare> l4{{{2, 2}, {2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::less));
}
// Greater, due to contained values
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 3}, {2, 3}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::greater));
Container<Key, Val, Compare> l3{{{1, 1}, {2, 3}, {2, 3}}, comp};
Container<Key, Val, Compare> l4{{{2, 2}, {2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::greater));
}
// Shorter list
{
Container<Key, Val, Compare> l1{{{1, 1}, {2, 2}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}, {2, 2}, {3, 1}}, comp};
assert(testOrder(l1, l2, Order::less));
Container<Key, Val, Compare> l3{{{1, 1}, {2, 2}}, comp};
Container<Key, Val, Compare> l4{{{3, 1}, {2, 2}, {2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::less));
}
// Longer list
{
Container<Key, Val, Compare> l1{{{1, 2}, {2, 2}, {2, 2}, {3, 1}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}}, comp};
assert(testOrder(l1, l2, Order::greater));
Container<Key, Val, Compare> l3{{{1, 2}, {2, 2}, {2, 2}, {3, 1}}, comp};
Container<Key, Val, Compare> l4{{{2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::greater));
}
// Unordered
if constexpr (std::is_same_v<Val, PartialOrder>) {
Container<Key, Val, Compare> l1{{{1, 1}, {2, std::numeric_limits<int>::min()}, {2, 3}}, comp};
Container<Key, Val, Compare> l2{{{1, 1}, {2, 2}, {2, 3}}, comp};
assert(testOrder(l1, l2, Order::unordered));
Container<Key, Val, Compare> l3{{{1, 1}, {2, std::numeric_limits<int>::min()}, {2, 3}}, comp};
Container<Key, Val, Compare> l4{{{2, 3}, {2, 2}, {1, 1}}, comp};
assert(testOrder(l3, l4, Order::unordered));
}
}
// Tests the `operator<=>` on ordered map containers
template <template <typename...> typename Container>
constexpr bool test_ordered_map_container_spaceship() {
// Thanks to SFINAE, the following is not a compiler error but returns `false`
struct NonComparable {};
static_assert(!std::three_way_comparable<Container<int, NonComparable>>);
// The container should fulfill `std::three_way_comparable`
static_assert(std::three_way_comparable<Container<int, int>>);
// Test different comparison categories
test_ordered_map_container_spaceship_with_type<Container, int, int, std::strong_ordering>(std::less{});
test_ordered_map_container_spaceship_with_type<Container, int, int, std::strong_ordering>(std::greater{});
test_ordered_map_container_spaceship_with_type<Container, int, StrongOrder, std::strong_ordering>(std::less{});
test_ordered_map_container_spaceship_with_type<Container, int, StrongOrder, std::strong_ordering>(std::greater{});
test_ordered_map_container_spaceship_with_type<Container, int, WeakOrder, std::weak_ordering>(std::less{});
test_ordered_map_container_spaceship_with_type<Container, int, WeakOrder, std::weak_ordering>(std::greater{});
test_ordered_map_container_spaceship_with_type<Container, int, PartialOrder, std::partial_ordering>(std ::less{});
test_ordered_map_container_spaceship_with_type<Container, int, PartialOrder, std::partial_ordering>(std ::greater{});
// `LessAndEqComp` does not have `operator<=>`. Ordering is synthesized based on `operator<`
test_ordered_map_container_spaceship_with_type<Container, int, LessAndEqComp, std::weak_ordering>(std::less{});
return true;
}
// Implementation detail of `test_ordered_set_container_spaceship`
template <template <typename...> typename Container, typename Elem, typename Order, typename Compare>
constexpr void test_ordered_set_spaceship_with_type(Compare comp) {
// Empty containers
{
Container<Elem, Compare> l1{{}, comp};
Container<Elem, Compare> l2{{}, comp};
assert(testOrder(l1, l2, Order::equivalent));
}
// Identical contents
{
Container<Elem, Compare> l1{{1, 1, 2}, comp};
Container<Elem, Compare> l2{{1, 1, 2}, comp};
assert(testOrder(l1, l2, Order::equivalent));
}
// Less, due to contained values
{
Container<Elem, Compare> l1{{1, 1, 2, 3}, comp};
Container<Elem, Compare> l2{{1, 2, 2, 4}, comp};
assert(testOrder(l1, l2, Order::less));
}
// Greater, due to contained values
{
Container<Elem, Compare> l1{{1, 2, 2, 4}, comp};
Container<Elem, Compare> l2{{1, 1, 2, 3}, comp};
assert(testOrder(l1, l2, Order::greater));
}
// Shorter list
{
Container<Elem, Compare> l1{{1, 1, 2, 2}, comp};
Container<Elem, Compare> l2{{1, 1, 2, 2, 3}, comp};
assert(testOrder(l1, l2, Order::less));
}
// Longer list
{
Container<Elem, Compare> l1{{1, 1, 2, 2, 3}, comp};
Container<Elem, Compare> l2{{1, 1, 2, 2}, comp};
assert(testOrder(l1, l2, Order::greater));
}
// Unordered
if constexpr (std::is_same_v< Container<Elem>, std::multiset<PartialOrder>>) {
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::less{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::min()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::unordered));
}
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::less{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::max()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::unordered));
}
}
if constexpr (std::is_same_v< Container<Elem>, std::set<PartialOrder>>) {
// Unordered values are not supported for `set`
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::less{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::min()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::less));
}
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::less{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::max()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::less));
}
}
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::greater{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::min()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::less));
}
if constexpr (std::is_same_v<Elem, PartialOrder> && std::is_same_v<Compare, decltype(std::greater{})>) {
Container<Elem, Compare> l1{{1, std::numeric_limits<int>::max()}, comp};
Container<Elem, Compare> l2{{1, 2}, comp};
assert(testOrder(l1, l2, Order::less));
}
}
// Tests the `operator<=>` on ordered set containers
template <template <typename...> typename Container>
constexpr bool test_ordered_set_container_spaceship() {
// Thanks to SFINAE, the following is not a compiler error but returns `false`
struct NonComparable {};
static_assert(!std::three_way_comparable<Container<NonComparable>>);
// The container should fulfill `std::three_way_comparable`
static_assert(std::three_way_comparable<Container<int>>);
// Test different comparison categories
test_ordered_set_spaceship_with_type<Container, int, std::strong_ordering>(std::less{});
test_ordered_set_spaceship_with_type<Container, int, std::strong_ordering>(std::greater{});
test_ordered_set_spaceship_with_type<Container, StrongOrder, std::strong_ordering>(std::less{});
test_ordered_set_spaceship_with_type<Container, StrongOrder, std::strong_ordering>(std::greater{});
test_ordered_set_spaceship_with_type<Container, WeakOrder, std::weak_ordering>(std::less{});
test_ordered_set_spaceship_with_type<Container, WeakOrder, std::weak_ordering>(std::greater{});
test_ordered_set_spaceship_with_type<Container, PartialOrder, std::partial_ordering>(std::less{});
test_ordered_set_spaceship_with_type<Container, PartialOrder, std::partial_ordering>(std::greater{});
// `LessAndEqComp` does not have `operator<=>`. Ordering is synthesized based on `operator<`
test_ordered_set_spaceship_with_type<Container, LessAndEqComp, std::weak_ordering>(std::less{});
return true;
}
#endif
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