mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Christoph Purrer
6c315de226
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/35385 In OpenSource builds folly:: types are not always easy to consume. With butter:: we actually allow consumers to opt-into other/non folly:: types (by providing a custom butter:: implementation). This change adds a butter::function for that purpose. It is especially useful for react-native-windows which prefers Mso::Functor over folly::Function. You can use it by setting those compiler flags: -DBUTTER_FUNCTION_OVERRIDE_INCLUDE=<functional/functor.h> -DBUTTER_FUNCTION_OVERRIDE=Mso::Functor std::function is no option as it is not move-only and we can't wait till 2025 > https://www.open-std.org/jtc1/sc22/wg21/docs/papers/2021/p0288r9.html Changelog: [Internal] Reviewed By: sammy-SC Differential Revision: D41388193 fbshipit-source-id: 56f58b9ddc602aa4b13000031d50de5228b4a16b
52 lines
1.0 KiB
C++
52 lines
1.0 KiB
C++
/*
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* Copyright (c) Meta Platforms, Inc. and affiliates.
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*
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* This source code is licensed under the MIT license found in the
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* LICENSE file in the root directory of this source tree.
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*/
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#pragma once
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#include <butter/butter.h>
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#if ( \
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defined(BUTTER_FUNCTION_OVERRIDE_INCLUDE) && \
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defined(BUTTER_FUNCTION_OVERRIDE))
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#include BUTTER_FUNCTION_OVERRIDE_INCLUDE
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#elif defined(BUTTER_USE_FOLLY_CONTAINERS)
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#include <folly/Function.h>
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#else
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#include <functional>
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#endif
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namespace facebook {
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namespace butter {
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#if ( \
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defined(BUTTER_FUNCTION_OVERRIDE_INCLUDE) && \
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defined(BUTTER_FUNCTION_OVERRIDE))
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template <typename... Ts>
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using function = BUTTER_FUNCTION_OVERRIDE<Ts...>;
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#elif defined(BUTTER_USE_FOLLY_CONTAINERS)
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template <typename... Ts>
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using function = folly::Function<Ts...>;
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#else
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template <typename... Ts>
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using function = std::function<Ts...>;
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#endif
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} // namespace butter
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} // namespace facebook
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