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Merged
dietmarkuehl merged 2 commits into from
Jul 29, 2025
Merged

Make bulk pipeable #173

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558fc5e
Make bulk pipeable
Andres-Salamanca Jul 28, 2025
2208ca9
Add separate tests for pipable bulk syntax
Andres-Salamanca Jul 29, 2025
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10 changes: 9 additions & 1 deletion include/beman/execution/detail/bulk.hpp
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
#ifndef INCLUDED_BEMAN_EXECUTION_DETAIL_BULK
#define INCLUDED_BEMAN_EXECUTION_DETAIL_BULK

#include "beman/execution/detail/sender_adaptor.hpp"
#include "beman/execution/detail/sender_adaptor_closure.hpp"
#include <beman/execution/detail/get_completion_signatures.hpp>
#include <beman/execution/detail/meta_combine.hpp>
#include <beman/execution/detail/meta_unique.hpp>
Expand All @@ -29,7 +31,13 @@
#include <beman/execution/detail/suppress_push.hpp>
namespace beman::execution::detail {

struct bulk_t {
struct bulk_t : ::beman::execution::sender_adaptor_closure<bulk_t> {

template <class Shape, class f>
requires(std::is_integral_v<Shape> && ::beman::execution::detail::movable_value<f>)
auto operator()(Shape&& shape, f&& fun) const {
return beman::execution::detail::sender_adaptor{*this, std::forward<Shape>(shape), std::forward<f>(fun)};
}

template <class Sender, class Shape, class f>
requires(::beman::execution::sender<Sender> && std::is_integral_v<Shape> &&
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54 changes: 54 additions & 0 deletions tests/beman/execution/exec-bulk.test.cpp
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Expand Up @@ -87,6 +87,60 @@ auto test_bulk_noexept() {
ASSERT(counter == 10);
}

auto test_bulk_pipeable() {
auto b0 = test_std::just() | test_std::bulk(1, [](int) {});

static_assert(test_std::sender<decltype(b0)>);
auto b0_env = test_std::get_env(b0);
auto b0_completions = test_std::get_completion_signatures(b0, b0_env);
static_assert(
std::is_same_v<decltype(b0_completions),
beman::execution::completion_signatures<beman::execution::set_value_t(),
beman::execution::set_error_t(std::exception_ptr)> >,
"Completion signatures do not match!");

int counter = 0;

auto b1 = test_std::just() | test_std::bulk(5, [&](int i) { counter += i; });

static_assert(test_std::sender<decltype(b1)>);
auto b1_env = test_std::get_env(b0);
auto b1_completions = test_std::get_completion_signatures(b1, b1_env);
static_assert(
std::is_same_v<decltype(b1_completions),
beman::execution::completion_signatures<beman::execution::set_value_t(),
beman::execution::set_error_t(std::exception_ptr)> >,
"Completion signatures do not match!");
test_std::sync_wait(b1);
ASSERT(counter == 10);

std::vector<int> a{1, 2, 3, 4, 5, 6, 7, 8};
std::vector<int> b{9, 10, 11, 13, 14, 15, 16, 17};

std::vector<int> results(a.size(), 0);

auto b2 = test_std::just(a) | test_std::bulk(a.size(), [&](std::size_t index, const std::vector<int>& vec) {
results[index] = vec[index] * b[index];
});

static_assert(test_std::sender<decltype(b2)>);
auto b2_env = test_std::get_env(b2);
auto b2_completions = test_std::get_completion_signatures(b2, b2_env);
static_assert(
std::is_same_v<decltype(b2_completions),
beman::execution::completion_signatures<beman::execution::set_value_t(std::vector<int>),
beman::execution::set_error_t(std::exception_ptr)> >,
"Completion signatures do not match!");
test_std::sync_wait(b2);

// Expected results: element-wise multiplication of a and b
std::vector<int> expected{9, 20, 33, 52, 70, 90, 112, 136};

for (size_t i = 0; i < results.size(); ++i) {
ASSERT(results[i] == expected[i]);
}
}

} // namespace

TEST(exec_bulk) {
Expand Down