104 lines
2.2 KiB
C++
104 lines
2.2 KiB
C++
// Copyright 2004-present Facebook. All Rights Reserved.
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//TODO #14683310 remove this header as soon as RN iOS OSS links against folly
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#pragma once
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#if defined(ANDROID)
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#define USE_FOLLY_FOR_ENDIAN_SWAP 1
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#define USE_FOLLY_FOR_TO_STRING 1
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#elif defined(__has_include)
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#define USE_FOLLY_FOR_ENDIAN_SWAP __has_include(<folly/Bits.h>)
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#define USE_FOLLY_FOR_TO_STRING __has_include(<folly/Conv.h>)
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#else
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#define USE_FOLLY_FOR_ENDIAN_SWAP 0
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#define USE_FOLLY_FOR_TO_STRING 0
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#endif
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#if USE_FOLLY_FOR_ENDIAN_SWAP
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#include <folly/Bits.h>
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#elif defined(__APPLE__)
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#include <cstdint>
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#include <CoreFoundation/CFByteOrder.h>
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#endif // USE_FOLLY_FOR_ENDIAN_SWAP
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#if USE_FOLLY_FOR_TO_STRING
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#include <folly/Conv.h>
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#else
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#include <sstream>
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#include <string>
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#endif // USE_FOLLY_FOR_TO_STRING
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#if USE_FOLLY_FOR_ENDIAN_SWAP
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namespace facebook {
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namespace react {
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template <typename T>
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inline T littleEndianToHost(T x) {
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return folly::Endian::little(x);
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}
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#elif defined(__APPLE__)
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namespace facebook {
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namespace react {
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// Yes, this is horrible. #14683310
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inline int32_t littleEndianToHost(int32_t x) {
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return CFSwapInt32LittleToHost(x);
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}
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inline uint32_t littleEndianToHost(uint32_t x) {
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return CFSwapInt32LittleToHost(x);
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}
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inline int64_t littleEndianToHost(int64_t x) {
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return CFSwapInt64LittleToHost(x);
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}
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inline uint64_t littleEndianToHost(uint64_t x) {
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return CFSwapInt64LittleToHost(x);
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}
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#endif // USE_FOLLY_FOR_ENDIAN_SWAP
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#if USE_FOLLY_FOR_TO_STRING
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template <typename ...Ts>
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inline std::string toString(Ts... values) {
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return folly::to<std::string>(std::forward<Ts>(values)...);
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}
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#else
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namespace {
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template <typename ...Ts>
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std::string toString(const std::stringstream& buf) {
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return buf.str();
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}
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template <typename T, typename ...Ts>
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std::string toString(std::stringstream& buf, T value, Ts... values) {
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buf << value;
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return toString(buf, std::forward<Ts>(values)...);
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}
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} // anonymous namespace
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template <typename ...Ts>
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std::string toString(Ts... values) {
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std::stringstream buf{};
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return toString(buf, std::forward<Ts>(values)...);
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}
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#endif // USE_FOLLY_FOR_TO_STRING
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} // namespace react
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} // namespace facebook
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#undef USE_FOLLY_FOR_ENDIAN_SWAP
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#undef USE_FOLLY_FOR_TO_STRING
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