Add sender_to concept

Author: Cra3z

include/beman/execution/detail/sender_to.hpp

@@ -0,0 +1,43 @@
+// include/beman/execution/detail/sender_to.hpp                     -*-C++-*-
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#ifndef INCLUDED_BEMAN_EXECUTION_DETAIL_SENDER_TO
+#define INCLUDED_BEMAN_EXECUTION_DETAIL_SENDER_TO
+
+#ifdef BEMAN_HAS_IMPORT_STD
+import std;
+#else
+#include <utility>
+#endif
+#include <beman/execution/detail/common.hpp>
+#ifdef BEMAN_HAS_MODULES
+import beman.execution.detail.completion_signatures_of_t;
+import beman.execution.detail.connect;
+import beman.execution.detail.env_of_t;
+import beman.execution.detail.receiver_of;
+import beman.execution.detail.sender_in;
+#else
+#include <beman/execution/detail/completion_signatures_of_t.hpp>
+#include <beman/execution/detail/connect.hpp>
+#include <beman/execution/detail/env_of_t.hpp>
+#include <beman/execution/detail/receiver_of.hpp>
+#include <beman/execution/detail/sender_in.hpp>
+#endif
+
+// ----------------------------------------------------------------------------
+
+namespace beman::execution {
+template <typename Sender, typename Receiver>
+concept sender_to =
+    ::beman::execution::sender_in<Sender, ::beman::execution::env_of_t<Receiver>> &&
+    ::beman::execution::receiver_of<
+        Receiver,
+        ::beman::execution::completion_signatures_of_t<Sender, ::beman::execution::env_of_t<Receiver>>> &&
+    requires(Sender&& sndr, Receiver&& rcvr) {
+        ::beman::execution::connect(::std::forward<Sender>(sndr), ::std::forward<Receiver>(rcvr));
+    };
+} // namespace beman::execution
+
+// ----------------------------------------------------------------------------
+
+#endif // INCLUDED_BEMAN_EXECUTION_DETAIL_SENDER_TO

include/beman/execution/execution.hpp

@@ -87,6 +87,7 @@ import beman.execution.detail.write_env;
 #include <beman/execution/detail/get_env.hpp>
 #include <beman/execution/detail/get_scheduler.hpp>
 #include <beman/execution/detail/get_stop_token.hpp>
+#include <beman/execution/detail/inline_scheduler.hpp>
 #include <beman/execution/detail/into_variant.hpp>
 #include <beman/execution/detail/just.hpp>
 #include <beman/execution/detail/let.hpp>
@@ -102,6 +103,7 @@ import beman.execution.detail.write_env;
 #include <beman/execution/detail/scope_token.hpp>
 #include <beman/execution/detail/sender_adaptor_closure.hpp>
 #include <beman/execution/detail/sender_in.hpp>
+#include <beman/execution/detail/sender_to.hpp>
 #include <beman/execution/detail/sender.hpp>
 #include <beman/execution/detail/set_error.hpp>
 #include <beman/execution/detail/set_stopped.hpp>

src/beman/execution/CMakeLists.txt

@@ -156,6 +156,7 @@ target_sources(
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/sender_for.hpp
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/sender_has_affine_on.hpp
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/sender_in.hpp
+                ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/sender_to.hpp
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/sends_stopped.hpp
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/set_error.hpp
                 ${PROJECT_SOURCE_DIR}/include/beman/execution/detail/set_stopped.hpp
@@ -345,6 +346,7 @@ if(BEMAN_USE_MODULES)
                     sender_has_affine_on.cppm
                     sender_in.cppm
                     sender.cppm
+                    sender_to.cppm
                     sends_stopped.cppm
                     set_error.cppm
                     set_stopped.cppm

src/beman/execution/execution.cppm

@@ -93,6 +93,7 @@ export import beman.execution.detail.receiver_of;
 export import beman.execution.detail.sender;
 export import beman.execution.detail.sender_in;
 //-dk:TODO export using ::beman::execution::sender_to;
+export import beman.execution.detail.sender_to;
 
 export import beman.execution.detail.sends_stopped;
 

src/beman/execution/sender_to.cppm

@@ -0,0 +1,11 @@
+module;
+// src/beman/execution/sender_to.cppm                                    -*-C++-*-
+// SPDX-License-Identifier: Apache-2.0 WITH LLVM-exception
+
+#include <beman/execution/detail/sender_to.hpp>
+
+export module beman.execution.detail.sender_to;
+
+namespace beman::execution {
+export using beman::execution::sender_to;
+} // namespace beman::execution

tests/beman/execution/exec-snd-concepts.test.cpp

@@ -173,6 +173,17 @@ auto test_sender_for() -> void {
     static_assert(test_std::sender<std_sender>);
     static_assert(not test_detail::sender_for<std_sender, tag_t>);
 }
+
+auto test_sender_to() -> void {
+    struct int_receiver {
+        using receiver_concept = test_std::receiver_t;
+        static auto set_value(int) noexcept -> void {}
+    };
+
+    static_assert(test_std::sender_to<decltype(test_std::just(1)), int_receiver>);
+    static_assert(not test_std::sender_to<decltype(test_std::just()), int_receiver>);
+}
+
 } // namespace
 
 TEST(exec_snd_concepts) {
@@ -183,4 +194,5 @@ TEST(exec_snd_concepts) {
     test_sender_in();
     test_tag_of_t();
     test_sender_for();
+    test_sender_to();
 }