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/*
* GridTools
*
* Copyright (c) 2014-2019, ETH Zurich
* All rights reserved.
*
* Please, refer to the LICENSE file in the root directory.
* SPDX-License-Identifier: BSD-3-Clause
*/
#include <cpp_bindgen/function_wrapper.hpp>
#include <iostream>
#include <stack>
#include <type_traits>
#include <gtest/gtest.h>
#include <cpp_bindgen/handle.h>
namespace cpp_bindgen {
namespace {
struct a_struct {};
struct array_descriptor_struct {
array_descriptor_struct(const bindgen_fortran_array_descriptor &);
using bindgen_view_element_type = int;
using bindgen_view_rank = std::integral_constant<std::size_t, 3>;
};
static_assert(std::is_same<wrapped_t<void (*)()>, void()>::value, "");
static_assert(std::is_same<wrapped_t<int()>, int()>::value, "");
static_assert(std::is_same<wrapped_t<a_struct()>, bindgen_handle *()>::value, "");
static_assert(std::is_same<wrapped_t<a_struct const &()>, bindgen_handle *()>::value, "");
static_assert(std::is_same<wrapped_t<void(int)>, void(int)>::value, "");
static_assert(std::is_same<wrapped_t<void(int &)>, void(int *)>::value, "");
static_assert(std::is_same<wrapped_t<void(int const *)>, void(int const *)>::value, "");
static_assert(std::is_same<wrapped_t<void(a_struct *)>, void(bindgen_handle *)>::value, "");
static_assert(std::is_same<wrapped_t<void(a_struct &)>, void(bindgen_handle *)>::value, "");
static_assert(std::is_same<wrapped_t<void(a_struct)>, void(bindgen_handle *)>::value, "");
static_assert(
std::is_same<wrapped_t<void(float (&)[1][2][3])>, void(bindgen_fortran_array_descriptor *)>::value, "");
static_assert(std::is_same<wrapped_t<array_descriptor_struct(array_descriptor_struct)>,
bindgen_handle *(bindgen_fortran_array_descriptor *)>::value,
"");
template <class T>
std::stack<T> create() {
return std::stack<T>{};
}
template <class T>
void push_to_ref(std::stack<T> &obj, T val) {
obj.push(val);
}
template <class T>
void push_to_ptr(std::stack<T> *obj, T val) {
obj->push(val);
}
template <class T>
void pop(std::stack<T> &obj) {
obj.pop();
}
template <class T>
T top(const std::stack<T> &obj) {
return obj.top();
}
template <class T>
bool empty(const std::stack<T> &obj) {
return obj.empty();
}
TEST(wrap, smoke) {
bindgen_handle *obj = wrap(create<int>)();
EXPECT_TRUE(wrap(empty<int>)(obj));
wrap(push_to_ref<int>)(obj, 42);
EXPECT_FALSE(wrap(empty<int>)(obj));
EXPECT_EQ(42, wrap(top<int>)(obj));
wrap(push_to_ptr<int>)(obj, 43);
EXPECT_EQ(43, wrap(top<int>)(obj));
wrap(pop<int>)(obj);
wrap(pop<int>)(obj);
EXPECT_TRUE(wrap(empty<int>)(obj));
bindgen_release(obj);
}
std::unique_ptr<int> make_ptr() { return std::unique_ptr<int>{new int{3}}; }
std::unique_ptr<int> forward_ptr(std::unique_ptr<int> &&ptr) { return std::move(ptr); }
void set_ptr(std::unique_ptr<int> &ptr, int v) { *ptr = v; }
int get_ptr(std::unique_ptr<int> &ptr) { return *ptr; }
bool is_ptr_set(std::unique_ptr<int> &ptr) { return ptr.get(); }
TEST(wrap, return_values) {
bindgen_handle *obj = wrap(make_ptr)();
wrap(set_ptr)(obj, 3);
EXPECT_EQ(3, wrap(get_ptr)(obj));
bindgen_handle *obj2 = wrap(forward_ptr)(obj);
wrap(set_ptr)(obj2, 4);
EXPECT_EQ(4, wrap(get_ptr)(obj2));
EXPECT_FALSE(wrap(is_ptr_set)(obj));
bindgen_release(obj);
bindgen_release(obj2);
}
void inc(int &val) { ++val; }
TEST(wrap, const_expr) {
constexpr auto wrapped_inc = wrap(inc);
int i = 41;
wrapped_inc(&i);
EXPECT_EQ(42, i);
}
TEST(wrap, lambda) {
EXPECT_EQ(42, wrap(+[] { return 42; })());
}
TEST(wrap, lambda2) {
int val = 42;
auto testee = wrap<int()>([&] { return val; });
EXPECT_EQ(42, testee());
val = 1;
EXPECT_EQ(1, testee());
}
TEST(wrap, array_descriptor) {
int array[2][3] = {{1, 2, 3}, {4, 5, 6}};
bindgen_fortran_array_descriptor descriptor;
descriptor.data = array;
descriptor.type = bindgen_fk_Int;
descriptor.rank = 2;
descriptor.dims[0] = 3;
descriptor.dims[1] = 2;
descriptor.is_acc_present = false;
auto get = wrap<int(int(&)[2][3], size_t, size_t)>(
[](int(&array)[2][3], size_t i, size_t j) { return array[i][j]; });
EXPECT_EQ(array[0][0], get(&descriptor, 0, 0));
}
} // namespace
} // namespace cpp_bindgen
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