pointer.h

// Copyright 2023 The Pigweed Authors
//
// Licensed under the Apache License, Version 2.0 (the "License"); you may not
// use this file except in compliance with the License. You may obtain a copy of
// the License at
//
//     https://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
// WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
// License for the specific language governing permissions and limitations under
// the License.
#pragma once
 
#include <utility>
 
#include "pw_function/internal/static_invoker.h"
 
namespace pw::function {
 
 
template <typename FunctionType>
constexpr auto GetFunctionPointer() {
  return internal::StaticInvoker<
      FunctionType,
      decltype(&FunctionType::operator())>::InvokeWithContextLast;
}
 
template <typename FunctionType>
constexpr auto GetFunctionPointer(const FunctionType&) {
  return GetFunctionPointer<FunctionType>();
}
 
template <typename FunctionType>
constexpr auto GetFunctionPointerContextFirst() {
  return internal::StaticInvoker<
      FunctionType,
      decltype(&FunctionType::operator())>::InvokeWithContextFirst;
}
 
template <typename FunctionType>
constexpr auto GetFunctionPointerContextFirst(const FunctionType&) {
  return GetFunctionPointerContextFirst<FunctionType>();
}
 
}  // namespace pw::function