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//===----------------------------------------------------------------------===//
//
// 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
//
//===----------------------------------------------------------------------===//
// UNSUPPORTED: c++03, c++11, c++14, c++17
// UNSUPPORTED: !c++experimental
// ADL call with nested iterators of views should not look up base's view's
// namespace
#include <ranges>
#include <tuple>
#include "test_macros.h"
#ifndef TEST_HAS_NO_LOCALIZATION
#include <istream>
#endif
namespace adl {
struct BaseView : std::ranges::view_base {
int* begin() const;
int* end() const;
};
struct TupleView : std::ranges::view_base {
std::tuple<int>* begin() const;
std::tuple<int>* end() const;
};
struct NestedView : std::ranges::view_base {
BaseView* begin() const;
BaseView* end() const;
};
struct Pred {
bool operator()(const auto&...) const;
};
struct Sentinel {
bool operator==(const auto&) const;
};
struct Value {
friend std::istream& operator>>(std::istream&, Value);
};
void adl_func(const auto&);
} // namespace adl
template <class View>
concept CanFindADLFunc = requires(std::ranges::iterator_t<View> it) { adl_func(it); };
static_assert(!CanFindADLFunc<std::ranges::elements_view<adl::TupleView, 0>>);
static_assert(!CanFindADLFunc<std::ranges::filter_view<adl::BaseView, adl::Pred>>);
static_assert(!CanFindADLFunc<std::ranges::iota_view<int, adl::Sentinel>>);
#ifndef TEST_HAS_NO_LOCALIZATION
static_assert(!CanFindADLFunc<std::ranges::istream_view<adl::Value>>);
#endif
static_assert(!CanFindADLFunc<std::ranges::join_view<adl::NestedView>>);
static_assert(!CanFindADLFunc<std::ranges::lazy_split_view<adl::BaseView, adl::BaseView>>);
using InnerRange =
typename std::ranges::iterator_t<std::ranges::lazy_split_view<adl::BaseView, adl::BaseView>>::value_type;
static_assert(!CanFindADLFunc<InnerRange >);
static_assert(!CanFindADLFunc<std::ranges::split_view<adl::BaseView, adl::BaseView>>);
static_assert(!CanFindADLFunc<std::ranges::transform_view<adl::BaseView, adl::Pred>>);
#if TEST_STD_VER >= 23
static_assert(!CanFindADLFunc<std::ranges::zip_view<adl::BaseView>>);
#endif
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