Files
paddlepaddle--paddle/test/cpp/utils/span_test.cc
T
2026-07-13 12:40:42 +08:00

1013 lines
37 KiB
C++

// Copyright (c) 2023 PaddlePaddle Authors. All Rights Reserved.
// This file copy from https://github.com/tcbrindle/span
// Modified the following points
// 1. remove macros for backward compatibility with pre-C++17 standards
// 2. instantiated namespace name with paddle
/*
This is an implementation of C++20's std::span
http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2019/n4820.pdf
*/
// Copyright Tristan Brindle 2018.
// Distributed under the Boost Software License, Version 1.0.
// (See accompanying file ../../LICENSE_1_0.txt or copy at
// https://www.boost.org/LICENSE_1_0.txt)
#include <cassert>
#include <deque>
#include <initializer_list>
#include <vector>
#include "glog/logging.h"
#include "gtest/gtest.h"
#include "paddle/phi/core/enforce.h"
#include "paddle/utils/span.h"
using paddle::span;
// span();
TEST(default_ctor, span) {
static_assert(std::is_nothrow_default_constructible<span<int>>::value);
static_assert(std::is_nothrow_default_constructible<span<int, 0>>::value);
static_assert(!std::is_default_constructible<span<int, 42>>::value);
// dynamic size
{
constexpr span<int> s{};
static_assert(s.empty());
static_assert(s.data() == nullptr);
#ifndef _MSC_VER
static_assert(s.begin() == s.end());
#else
PADDLE_ENFORCE_EQ(s.begin(),
s.end(),
common::errors::Fatal(
"constexpr `span`'s begin() is not equal, but "
"`span` should be empty, please check constructor"));
#endif
}
// fixed size
{
constexpr span<int, 0> s{};
static_assert(s.empty());
static_assert(s.data() == nullptr);
#ifndef _MSC_VER
static_assert(s.begin() == s.end());
#else
PADDLE_ENFORCE_EQ(s.begin(),
s.end(),
common::errors::Fatal(
"constexpr `span`'s begin() is not equal, but "
"`span` should be empty, please check constructor"));
#endif
}
}
// span(pointer ptr, size_type count);
TEST(pointer_length_ctor, span) {
static_assert(std::is_constructible<span<int>, int*, int>::value);
static_assert(std::is_constructible<span<const int>, int*, int>::value);
static_assert(std::is_constructible<span<const int>, const int*, int>::value);
static_assert(std::is_constructible<span<int, 42>, int*, int>::value);
static_assert(std::is_constructible<span<const int, 42>, int*, int>::value);
static_assert(
std::is_constructible<span<const int, 42>, const int*, int>::value);
// dynamic size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int> s(arr, 3);
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
// fixed size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int, 3> s(arr, 3);
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
}
// span(pointer ptr, pointer ptr);
TEST(pointer_pointer_ctor, span) {
static_assert(std::is_constructible<span<int>, int*, int*>::value);
static_assert(!std::is_constructible<span<int>, float*, float*>::value);
static_assert(std::is_constructible<span<int, 42>, int*, int*>::value);
static_assert(!std::is_constructible<span<int, 42>, float*, float*>::value);
// dynamic size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int> s{arr, arr + 3};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
// fixed size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int, 3> s{arr, arr + 3};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
}
TEST(c_array_ctor, span) {
using int_array_t = int[3]; // NOLINT
using float_array_t = float[3]; // NOLINT
static_assert(std::is_nothrow_constructible<span<int>, int_array_t&>::value);
static_assert(!std::is_constructible<span<int>, int_array_t const&>::value);
static_assert(!std::is_constructible<span<int>, float_array_t>::value);
static_assert(
std::is_nothrow_constructible<span<const int>, int_array_t&>::value);
static_assert(std::is_nothrow_constructible<span<const int>,
int_array_t const&>::value);
static_assert(!std::is_constructible<span<const int>, float_array_t>::value);
static_assert(
std::is_nothrow_constructible<span<int, 3>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<int, 3>, int_array_t const&>::value);
static_assert(!std::is_constructible<span<int, 3>, float_array_t&>::value);
static_assert(
std::is_nothrow_constructible<span<const int, 3>, int_array_t&>::value);
static_assert(std::is_nothrow_constructible<span<const int, 3>,
int_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int, 3>, float_array_t>::value);
static_assert(!std::is_constructible<span<int, 42>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<int, 42>, int_array_t const&>::value);
static_assert(!std::is_constructible<span<int, 42>, float_array_t&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, int_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, float_array_t&>::value);
// non-const, dynamic size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
// const, dynamic size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int const> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
// non-const, static size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
// const, dynamic size
{
int arr[] = {1, 2, 3}; // NOLINT
span<int const, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(
s.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
std::begin(arr),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(
s.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end iterator of arr, but got: %p.",
s.end()));
}
}
TEST(std_array_ctor, span) {
using int_array_t = std::array<int, 3>;
using float_array_t = std::array<float, 3>;
using zero_array_t = std::array<int, 0>;
static_assert(std::is_nothrow_constructible<span<int>, int_array_t&>::value);
static_assert(!std::is_constructible<span<int>, int_array_t const&>::value);
static_assert(!std::is_constructible<span<int>, float_array_t>::value);
static_assert(
std::is_nothrow_constructible<span<const int>, int_array_t&>::value);
static_assert(std::is_nothrow_constructible<span<const int>,
int_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int>, float_array_t const&>::value);
static_assert(
std::is_nothrow_constructible<span<int, 3>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<int, 3>, int_array_t const&>::value);
static_assert(!std::is_constructible<span<int, 3>, float_array_t>::value);
static_assert(
std::is_nothrow_constructible<span<const int, 3>, int_array_t&>::value);
static_assert(std::is_nothrow_constructible<span<const int, 3>,
int_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int, 3>, float_array_t const&>::value);
static_assert(!std::is_constructible<span<int, 42>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<int, 42>, int_array_t const&>::value);
static_assert(
!std::is_constructible<span<int, 42>, float_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, int_array_t&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, int_array_t const&>::value);
static_assert(
!std::is_constructible<span<const int, 42>, float_array_t&>::value);
static_assert(std::is_constructible<span<int>, zero_array_t&>::value);
static_assert(!std::is_constructible<span<int>, const zero_array_t&>::value);
static_assert(std::is_constructible<span<const int>, zero_array_t&>::value);
static_assert(
std::is_constructible<span<const int>, const zero_array_t&>::value);
static_assert(std::is_constructible<span<int, 0>, zero_array_t&>::value);
static_assert(
!std::is_constructible<span<int, 0>, const zero_array_t&>::value);
static_assert(
std::is_constructible<span<const int, 0>, zero_array_t&>::value);
static_assert(
std::is_constructible<span<const int, 0>, const zero_array_t&>::value);
// non-const, dynamic size
{
int_array_t arr = {1, 2, 3};
span<int> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// const, dynamic size
{
int_array_t arr = {1, 2, 3};
span<int const> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// non-const, static size
{
int_array_t arr = {1, 2, 3};
span<int, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// const, dynamic size
{
int_array_t arr = {1, 2, 3};
span<int const, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
}
TEST(ctor_from_containers, span) {
using vec_t = std::vector<int>;
using deque_t = std::deque<int>;
static_assert(std::is_constructible<span<int>, vec_t&>::value);
static_assert(!std::is_constructible<span<int>, const vec_t&>::value);
static_assert(!std::is_constructible<span<int>, const deque_t&>::value);
static_assert(std::is_constructible<span<const int>, vec_t&>::value);
static_assert(std::is_constructible<span<const int>, const vec_t&>::value);
static_assert(!std::is_constructible<span<const int>, const deque_t&>::value);
static_assert(!std::is_constructible<span<int, 3>, vec_t&>::value);
static_assert(!std::is_constructible<span<int, 3>, const vec_t&>::value);
static_assert(!std::is_constructible<span<int, 3>, const deque_t&>::value);
static_assert(!std::is_constructible<span<const int, 3>, vec_t&>::value);
static_assert(
!std::is_constructible<span<const int, 3>, const vec_t&>::value);
static_assert(
!std::is_constructible<span<const int, 3>, const deque_t&>::value);
// vector<bool> is not contiguous and cannot be converted to span<bool>
// Regression test for https://github.com/tcbrindle/span/issues/24
static_assert(!std::is_constructible<span<bool>, std::vector<bool>&>::value);
static_assert(!std::is_constructible<span<const bool>,
const std::vector<bool>&>::value);
// non-const, dynamic size
{
vec_t arr = {1, 2, 3};
span<int> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// const, dynamic size
{
vec_t arr = {1, 2, 3};
span<int const> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// non-const, static size
{
std::array<int, 3> arr = {1, 2, 3};
span<int, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
// const, dynamic size
{
std::array<int, 3> arr = {1, 2, 3};
span<int const, 3> s{arr};
PADDLE_ENFORCE_EQ(
s.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", s.size()));
PADDLE_ENFORCE_EQ(s.data(),
arr.data(),
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer "
"to arr.data(), but got: %p.",
s.data()));
PADDLE_ENFORCE_EQ(s.begin(),
arr.data(),
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr.data(), but got: %p.",
s.begin()));
PADDLE_ENFORCE_EQ(s.end(),
arr.data() + 3,
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of arr.data() + 3, but got: %p.",
s.end()));
}
}
TEST(ctor_from_spans, span) {
using zero_span = span<int, 0>;
using zero_const_span = span<const int, 0>;
using big_span = span<int, 1000000>;
using big_const_span = span<const int, 1000000>;
using dynamic_span = span<int>;
using dynamic_const_span = span<const int>;
static_assert(std::is_trivially_copyable<zero_span>::value);
static_assert(std::is_trivially_move_constructible<zero_span>::value);
static_assert(!std::is_constructible<zero_span, zero_const_span>::value);
static_assert(!std::is_constructible<zero_span, big_span>::value);
static_assert(!std::is_constructible<zero_span, big_const_span>::value);
static_assert(std::is_nothrow_constructible<zero_span, dynamic_span>::value);
static_assert(!std::is_constructible<zero_span, dynamic_const_span>::value);
static_assert(
std::is_nothrow_constructible<zero_const_span, zero_span>::value);
static_assert(std::is_trivially_copyable<zero_const_span>::value);
static_assert(std::is_trivially_move_constructible<zero_const_span>::value);
static_assert(!std::is_constructible<zero_const_span, big_span>::value);
static_assert(!std::is_constructible<zero_const_span, big_const_span>::value);
static_assert(
std::is_nothrow_constructible<zero_const_span, dynamic_span>::value);
static_assert(std::is_nothrow_constructible<zero_const_span,
dynamic_const_span>::value);
static_assert(!std::is_constructible<big_span, zero_span>::value);
static_assert(!std::is_constructible<big_span, zero_const_span>::value);
static_assert(std::is_trivially_copyable<big_span>::value);
static_assert(std::is_trivially_move_constructible<big_span>::value);
static_assert(!std::is_constructible<big_span, big_const_span>::value);
static_assert(std::is_nothrow_constructible<big_span, dynamic_span>::value);
static_assert(!std::is_constructible<big_span, dynamic_const_span>::value);
static_assert(!std::is_constructible<big_const_span, zero_span>::value);
static_assert(!std::is_constructible<big_const_span, zero_const_span>::value);
static_assert(std::is_trivially_copyable<big_const_span>::value);
static_assert(std::is_trivially_move_constructible<big_const_span>::value);
static_assert(std::is_nothrow_constructible<big_const_span, big_span>::value);
static_assert(
std::is_nothrow_constructible<big_const_span, dynamic_span>::value);
static_assert(
std::is_nothrow_constructible<big_const_span, dynamic_const_span>::value);
static_assert(std::is_nothrow_constructible<dynamic_span, zero_span>::value);
static_assert(!std::is_constructible<dynamic_span, zero_const_span>::value);
static_assert(std::is_nothrow_constructible<dynamic_span, big_span>::value);
static_assert(!std::is_constructible<dynamic_span, big_const_span>::value);
static_assert(std::is_trivially_copyable<dynamic_span>::value);
static_assert(std::is_trivially_move_constructible<dynamic_span>::value);
static_assert(
!std::is_constructible<dynamic_span, dynamic_const_span>::value);
static_assert(
std::is_nothrow_constructible<dynamic_const_span, zero_span>::value);
static_assert(std::is_nothrow_constructible<dynamic_const_span,
zero_const_span>::value);
static_assert(
std::is_nothrow_constructible<dynamic_const_span, big_span>::value);
static_assert(
std::is_nothrow_constructible<dynamic_const_span, big_const_span>::value);
static_assert(
std::is_nothrow_constructible<dynamic_const_span, dynamic_span>::value);
static_assert(std::is_trivially_copyable<dynamic_const_span>::value);
static_assert(
std::is_trivially_move_constructible<dynamic_const_span>::value);
constexpr zero_const_span s0{};
constexpr dynamic_const_span d{s0};
static_assert(d.empty());
static_assert(d.data() == nullptr);
#ifndef _MSC_VER
static_assert(d.begin() == d.end());
#else
PADDLE_ENFORCE_EQ(d.begin(),
d.end(),
common::errors::Fatal(
"Variable `d`'s begin() should be the same to end(), "
"please check related function"));
#endif
}
TEST(subview, span) {
// first<N>
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto f = s.first<3>();
static_assert(std::is_same<decltype(f), span<int, 3>>::value);
PADDLE_ENFORCE_EQ(
f.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", f.size()));
PADDLE_ENFORCE_EQ(
f.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
f.data()));
PADDLE_ENFORCE_EQ(f.begin(),
arr,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
f.begin()));
PADDLE_ENFORCE_EQ(
f.end(),
arr + 3,
common::errors::InvalidArgument("End iterator mismatch. Expected end "
"iterator of arr + 3, but got: %p.",
f.end()));
}
// last<N>
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto l = s.last<3>();
static_assert(std::is_same<decltype(l), span<int, 3>>::value);
PADDLE_ENFORCE_EQ(
l.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", l.size()));
PADDLE_ENFORCE_EQ(
l.data(),
arr + 2,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr + 2, but got: %p.",
l.data()));
PADDLE_ENFORCE_EQ(l.begin(),
arr + 2,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr + 2, but got: %p.",
l.begin()));
PADDLE_ENFORCE_EQ(l.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of std::end(arr), but got: %p.",
l.end()));
}
// subspan<N>
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto ss = s.subspan<1, 2>();
static_assert(std::is_same<decltype(ss), span<int, 2>>::value);
PADDLE_ENFORCE_EQ(
ss.size(),
2UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 2, but got: %d.", ss.size()));
PADDLE_ENFORCE_EQ(
ss.data(),
arr + 1,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr + 1, but got: %p.",
ss.data()));
PADDLE_ENFORCE_EQ(ss.begin(),
arr + 1,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr + 1, but got: %p.",
ss.begin()));
PADDLE_ENFORCE_EQ(
ss.end(),
arr + 1 + 2,
common::errors::InvalidArgument("End iterator mismatch. Expected end "
"iterator of arr + 1 + 2, but got: %p.",
ss.end()));
}
// first(n)
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto f = s.first(3);
static_assert(std::is_same<decltype(f), span<int>>::value);
PADDLE_ENFORCE_EQ(
f.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", f.size()));
PADDLE_ENFORCE_EQ(
f.data(),
arr,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr, but got: %p.",
f.data()));
PADDLE_ENFORCE_EQ(f.begin(),
arr,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr, but got: %p.",
f.begin()));
PADDLE_ENFORCE_EQ(
f.end(),
arr + 3,
common::errors::InvalidArgument("End iterator mismatch. Expected end "
"iterator of arr + 3, but got: %p.",
f.end()));
}
// last(n)
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto l = s.last(3);
static_assert(std::is_same<decltype(l), span<int>>::value);
PADDLE_ENFORCE_EQ(
l.size(),
3UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 3, but got: %d.", l.size()));
PADDLE_ENFORCE_EQ(
l.data(),
arr + 2,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr + 2, but got: %p.",
l.data()));
PADDLE_ENFORCE_EQ(l.begin(),
arr + 2,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr + 2, but got: %p.",
l.begin()));
PADDLE_ENFORCE_EQ(l.end(),
std::end(arr),
common::errors::InvalidArgument(
"End iterator mismatch. Expected end "
"iterator of std::end(arr), but got: %p.",
l.end()));
}
// subspan(n)
{
int arr[] = {1, 2, 3, 4, 5}; // NOLINT
span<int, 5> s{arr};
auto ss = s.subspan(1, 2);
static_assert(std::is_same<decltype(ss), span<int>>::value);
PADDLE_ENFORCE_EQ(
ss.size(),
2UL,
common::errors::InvalidArgument(
"Size mismatch. Expected size: 2, but got: %d.", ss.size()));
PADDLE_ENFORCE_EQ(
ss.data(),
arr + 1,
common::errors::InvalidArgument(
"Data pointer mismatch. Expected pointer to arr + 1, but got: %p.",
ss.data()));
PADDLE_ENFORCE_EQ(ss.begin(),
arr + 1,
common::errors::InvalidArgument(
"Begin iterator mismatch. Expected begin "
"iterator of arr + 1, but got: %p.",
ss.begin()));
PADDLE_ENFORCE_EQ(
ss.end(),
arr + 1 + 2,
common::errors::InvalidArgument("End iterator mismatch. Expected end "
"iterator of arr + 1 + 2, but got: %p.",
ss.end()));
}
// TODO(tcbrindle): Test all the dynamic subspan possibilities
}
TEST(observers, span) {
// We already use this everywhere, but whatever
constexpr span<int, 0> empty{};
static_assert(empty.size() == 0); // NOLINT
static_assert(empty.empty());
constexpr int arr[] = {1, 2, 3}; // NOLINT
static_assert(span<const int>{arr}.size() == 3);
static_assert(!span<const int>{arr}.empty());
}
TEST(element_access, span) {
constexpr int arr[] = {1, 2, 3}; // NOLINT
span<const int> s{arr};
PADDLE_ENFORCE_EQ(
s[0],
arr[0],
common::errors::InvalidArgument(
"Element access mismatch. Expected arr[0], but got: %d.", s[0]));
PADDLE_ENFORCE_EQ(
s[1],
arr[1],
common::errors::InvalidArgument(
"Element access mismatch. Expected arr[1], but got: %d.", s[1]));
PADDLE_ENFORCE_EQ(
s[2],
arr[2],
common::errors::InvalidArgument(
"Element access mismatch. Expected arr[2], but got: %d.", s[2]));
}
TEST(iterator, span) {
{
std::vector<int> vec;
span<int> s{vec};
std::sort(s.begin(), s.end());
PADDLE_ENFORCE_EQ(
std::is_sorted(vec.cbegin(), vec.cend()),
true,
common::errors::Fatal("Variable `vec` should be sorted, please check"));
}
{
const std::vector<int> vec{1, 2, 3};
span<const int> s{vec};
PADDLE_ENFORCE_EQ(
std::equal(s.rbegin(), s.rend(), vec.crbegin()),
true,
common::errors::Fatal(
"Variable `s` is not equal to its self by using rbegin(), rend() "
"and crbegin() with std::equal, please check related function"));
}
}