1 // Copyright 2023 The Pigweed Authors 2 // 3 // Licensed under the Apache License, Version 2.0 (the "License"); you may not 4 // use this file except in compliance with the License. You may obtain a copy of 5 // the License at 6 // 7 // https://www.apache.org/licenses/LICENSE-2.0 8 // 9 // Unless required by applicable law or agreed to in writing, software 10 // distributed under the License is distributed on an "AS IS" BASIS, WITHOUT 11 // WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the 12 // License for the specific language governing permissions and limitations under 13 // the License. 14 #pragma once 15 16 #include "pw_async2/dispatcher.h" 17 #include "pw_function/function.h" 18 19 namespace pw::async2 { 20 21 /// A ``Task`` that delegates to a provided function ``func``. 22 /// 23 /// The provided ``func`` may be any callable (function, lambda, or similar) 24 /// which accepts a ``Context&`` and returns a ``Poll<>``. 25 /// 26 /// The resulting ``Task`` will implement ``Pend`` by invoking ``func``. 27 template <typename Func = Function<Poll<>(Context&)> > 28 class PendFuncTask : public Task { 29 public: 30 /// Create a new ``Task`` which delegates ``Pend`` to ``func``. 31 /// 32 /// See class docs for more details. PendFuncTask(Func && func)33 PendFuncTask(Func&& func) : func_(std::forward<Func>(func)) {} 34 35 private: DoPend(Context & cx)36 Poll<> DoPend(Context& cx) final { return func_(cx); } 37 Func func_; 38 }; 39 40 } // namespace pw::async2 41