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/*
* GridTools
*
* Copyright (c) 2014-2023, ETH Zurich
* All rights reserved.
*
* Please, refer to the LICENSE file in the root directory.
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <gridtools/sid/delegate.hpp>
#include <functional>
#include <gtest/gtest.h>
#include <gridtools/common/integral_constant.hpp>
#include <gridtools/common/tuple_util.hpp>
#include <gridtools/sid/concept.hpp>
#include <gridtools/sid/simple_ptr_holder.hpp>
#include <gridtools/sid/synthetic.hpp>
namespace gridtools {
namespace {
using namespace literals;
template <class Sid>
struct i_shifted : sid::delegate<Sid> {
friend sid::ptr_holder_type<Sid> sid_get_origin(i_shifted &obj) {
auto &&impl = obj.m_impl;
sid::ptr_diff_type<Sid> offset{};
sid::shift(offset, sid::get_stride<integral_constant<int, 0>>(sid::get_strides(impl)), 1_c);
return sid::get_origin(impl) + offset;
}
using sid::delegate<Sid>::delegate;
};
template <class Sid>
i_shifted<Sid> i_shift(Sid &&sid) {
return {std::forward<Sid>(sid)};
}
using sid::property;
namespace tu = tuple_util;
TEST(delegate, smoke) {
double data[3][5];
auto src = sid::synthetic()
.set<property::origin>(sid::host_device::simple_ptr_holder(&data[0][0]))
.set<property::strides>(tuple(5_c, 1_c));
EXPECT_EQ(&data[0][0], sid::get_origin(src)());
auto testee = i_shift(std::move(src));
static_assert(is_sid<decltype(testee)>());
EXPECT_EQ(&data[1][0], sid::get_origin(testee)());
}
TEST(delegate, array) {
double src[3][5];
auto testee = i_shift(src);
static_assert(is_sid<decltype(testee)>());
EXPECT_EQ(&src[1][0], sid::get_origin(testee)());
auto strides = sid::get_strides(testee);
EXPECT_EQ(tu::get<0>(strides), 5);
EXPECT_EQ(tu::get<1>(strides), 1);
}
template <class Sid>
sid::delegate<Sid> just_delegate(Sid &&s) {
return {std::forward<Sid>(s)};
}
TEST(delegate, do_nothing) {
double data[3][5];
auto src = sid::synthetic()
.set<property::origin>(sid::host_device::simple_ptr_holder(&data[0][0]))
.set<property::strides>(tuple(5_c, 1_c));
auto testee = just_delegate(src);
static_assert(is_sid<decltype(testee)>());
}
} // namespace
} // namespace gridtools
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