241c5e4baf
Summary: Pull Request resolved: https://github.com/facebook/yoga/pull/1372 X-link: https://github.com/facebook/react-native/pull/39375 D18029030 added `-fvisibility-hidden`, and a corresponding `YOGA_EXPORT` macro for defining shared library visibility. This is used inline next to function and class definitions that should be exported out of the binary. There was already a `WIN_EXPORT` macro doing the same thing when building a DLL, defined in the headers instead of CPP files, and it seems like sometimes folks forgot to add it to new public APIs after? This reconciles the redundant macros into a single visibility macro, that we always place with declaration instead of definition. We also rename `YOGA_EXPORT` to `YG_EXPORT` to match the naming convention of other Yoga macros. Reviewed By: rshest Differential Revision: D49132643 fbshipit-source-id: cafa6de0c300788a72d9a446ce07c5ac89a20a8e
127 lines
4.6 KiB
C++
127 lines
4.6 KiB
C++
/*
|
|
* Copyright (c) Meta Platforms, Inc. and affiliates.
|
|
*
|
|
* This source code is licensed under the MIT license found in the
|
|
* LICENSE file in the root directory of this source tree.
|
|
*/
|
|
|
|
#pragma once
|
|
|
|
#ifdef __cplusplus
|
|
#include <type_traits>
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
#define YG_EXTERN_C_BEGIN extern "C" {
|
|
#define YG_EXTERN_C_END }
|
|
#else
|
|
#define YG_EXTERN_C_BEGIN
|
|
#define YG_EXTERN_C_END
|
|
#endif
|
|
|
|
#if defined(__cplusplus)
|
|
#define YG_DEPRECATED(message) [[deprecated(message)]]
|
|
#elif defined(_MSC_VER)
|
|
#define YG_DEPRECATED(message) __declspec(deprecated(message))
|
|
#else
|
|
#define YG_DEPRECATED(message) __attribute__((deprecated(message)))
|
|
#endif
|
|
|
|
#ifdef _WINDLL
|
|
#define YG_EXPORT __declspec(dllexport)
|
|
#elif !defined(_MSC_VER)
|
|
#define YG_EXPORT __attribute__((visibility("default")))
|
|
#else
|
|
#define YG_EXPORT
|
|
#endif
|
|
|
|
#ifdef NS_ENUM
|
|
// Cannot use NSInteger as NSInteger has a different size than int (which is the
|
|
// default type of a enum). Therefor when linking the Yoga C library into obj-c
|
|
// the header is a mismatch for the Yoga ABI.
|
|
#define YG_ENUM_BEGIN(name) NS_ENUM(int, name)
|
|
#define YG_ENUM_END(name)
|
|
#else
|
|
#define YG_ENUM_BEGIN(name) enum name
|
|
#define YG_ENUM_END(name) name
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
#define YG_DEFINE_ENUM_FLAG_OPERATORS(name) \
|
|
extern "C++" { \
|
|
constexpr inline name operator~(name a) { \
|
|
return static_cast<name>( \
|
|
~static_cast<std::underlying_type<name>::type>(a)); \
|
|
} \
|
|
constexpr inline name operator|(name a, name b) { \
|
|
return static_cast<name>( \
|
|
static_cast<std::underlying_type<name>::type>(a) | \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
constexpr inline name operator&(name a, name b) { \
|
|
return static_cast<name>( \
|
|
static_cast<std::underlying_type<name>::type>(a) & \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
constexpr inline name operator^(name a, name b) { \
|
|
return static_cast<name>( \
|
|
static_cast<std::underlying_type<name>::type>(a) ^ \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
inline name& operator|=(name& a, name b) { \
|
|
return reinterpret_cast<name&>( \
|
|
reinterpret_cast<std::underlying_type<name>::type&>(a) |= \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
inline name& operator&=(name& a, name b) { \
|
|
return reinterpret_cast<name&>( \
|
|
reinterpret_cast<std::underlying_type<name>::type&>(a) &= \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
inline name& operator^=(name& a, name b) { \
|
|
return reinterpret_cast<name&>( \
|
|
reinterpret_cast<std::underlying_type<name>::type&>(a) ^= \
|
|
static_cast<std::underlying_type<name>::type>(b)); \
|
|
} \
|
|
}
|
|
#else
|
|
#define YG_DEFINE_ENUM_FLAG_OPERATORS(name)
|
|
#endif
|
|
|
|
#ifdef __cplusplus
|
|
|
|
namespace facebook::yoga::enums {
|
|
|
|
template <typename T>
|
|
constexpr int count(); // can't use `= delete` due to a defect in clang < 3.9
|
|
|
|
namespace detail {
|
|
template <int... xs>
|
|
constexpr int n() {
|
|
return sizeof...(xs);
|
|
}
|
|
} // namespace detail
|
|
|
|
} // namespace facebook::yoga::enums
|
|
#endif
|
|
|
|
#define YG_ENUM_DECL(NAME, ...) \
|
|
typedef YG_ENUM_BEGIN(NAME){__VA_ARGS__} YG_ENUM_END(NAME); \
|
|
YG_EXPORT const char* NAME##ToString(NAME);
|
|
|
|
#ifdef __cplusplus
|
|
#define YG_ENUM_SEQ_DECL(NAME, ...) \
|
|
YG_ENUM_DECL(NAME, __VA_ARGS__) \
|
|
YG_EXTERN_C_END \
|
|
\
|
|
namespace facebook::yoga::enums { \
|
|
template <> \
|
|
constexpr int count<NAME>() { \
|
|
return detail::n<__VA_ARGS__>(); \
|
|
} \
|
|
} \
|
|
YG_EXTERN_C_BEGIN
|
|
#else
|
|
#define YG_ENUM_SEQ_DECL YG_ENUM_DECL
|
|
#endif
|