blob: ee819c0b231e516525214f04a5ca83c4a9879fb8 [file] [log] [blame]
/*
* Copyright (C) 2019 The Android Open Source Project
*
* 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
*
* http://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.
*/
/**
* @addtogroup NdkBinder
* @{
*/
/**
* @file binder_enums.h
* @brief Helpers for AIDL enum types.
*/
#pragma once
#include <iterator>
#include <type_traits>
namespace ndk {
namespace internal {
/**
* Never instantiated. Used as a placeholder for template variables.
*/
template <typename T>
struct invalid_type;
/**
* AIDL generates specializations of this for enums.
*/
template <typename EnumType, typename = std::enable_if_t<std::is_enum<EnumType>::value>>
constexpr invalid_type<EnumType> enum_values;
} // namespace internal
/**
* Iterable interface to enumerate all values of AIDL enum types.
*/
template <typename EnumType, typename = std::enable_if_t<std::is_enum<EnumType>::value>>
struct enum_range {
/**
* Return an iterator pointing to the first enum value.
*/
constexpr auto begin() const { return std::begin(internal::enum_values<EnumType>); }
/**
* Return an iterator pointing to one past the last enum value.
*/
constexpr auto end() const { return std::end(internal::enum_values<EnumType>); }
};
} // namespace ndk
/** @} */