diff options
Diffstat (limited to 'libs/binder/ndk/include_ndk/android/binder_enums.h')
-rw-r--r-- | libs/binder/ndk/include_ndk/android/binder_enums.h | 65 |
1 files changed, 65 insertions, 0 deletions
diff --git a/libs/binder/ndk/include_ndk/android/binder_enums.h b/libs/binder/ndk/include_ndk/android/binder_enums.h new file mode 100644 index 0000000000..ee819c0b23 --- /dev/null +++ b/libs/binder/ndk/include_ndk/android/binder_enums.h @@ -0,0 +1,65 @@ +/* + * 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 + +/** @} */
\ No newline at end of file |