wehub-resource-sync
40 lines
1.9 KiB
C++
40 lines
1.9 KiB
C++
// Copyright (c) 2024 PaddlePaddle Authors. All Rights Reserved.
|
|
//
|
|
// 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.
|
|
|
|
// Inspired by https://github.com/NVIDIA/DALI/blob/main/include/dali/core/static_switch.h
|
|
// and https://github.com/pytorch/pytorch/blob/master/aten/src/ATen/Dispatch.h
|
|
|
|
#pragma once
|
|
|
|
/// @param COND - a boolean expression to switch by
|
|
/// @param CONST_NAME - a name given for the constexpr bool variable.
|
|
/// @param ... - code to execute for true and false
|
|
///
|
|
/// Usage:
|
|
/// ```
|
|
/// BOOL_SWITCH(flag, BoolConst, [&] {
|
|
/// some_function<BoolConst>(...);
|
|
/// });
|
|
/// ```
|
|
#define BOOL_SWITCH(COND, CONST_NAME, ...) \
|
|
[&] { \
|
|
if (COND) { \
|
|
constexpr bool CONST_NAME = true; \
|
|
return __VA_ARGS__(); \
|
|
} else { \
|
|
constexpr bool CONST_NAME = false; \
|
|
return __VA_ARGS__(); \
|
|
} \
|
|
}()
|