jiuyiUniapp/service/node_modules/react-native/ReactCommon/react/bridging/Base.h

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2025-02-13 09:59:20 +08:00
/*
* 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
#include <jsi/jsi.h>
#include <react/bridging/Convert.h>
#include <cstdint>
#include <memory>
#include <type_traits>
namespace facebook::react {
class CallInvoker;
template <typename T, typename = void>
struct Bridging;
template <>
struct Bridging<void> {
// Highly generic code may result in "casting" to void.
static void fromJs(jsi::Runtime&, const jsi::Value&) {}
};
namespace bridging {
namespace detail {
template <typename F>
struct function_wrapper;
template <typename C, typename R, typename... Args>
struct function_wrapper<R (C::*)(Args...)> {
using type = std::function<R(Args...)>;
};
template <typename C, typename R, typename... Args>
struct function_wrapper<R (C::*)(Args...) const> {
using type = std::function<R(Args...)>;
};
template <typename T, typename = void>
struct bridging_wrapper {
using type = remove_cvref_t<T>;
};
// Convert lambda types to move-only function types since we can't specialize
// Bridging templates for arbitrary lambdas.
template <typename T>
struct bridging_wrapper<
T,
std::void_t<decltype(&remove_cvref_t<T>::operator())>>
: function_wrapper<decltype(&remove_cvref_t<T>::operator())> {};
} // namespace detail
template <typename T>
using bridging_t = typename detail::bridging_wrapper<T>::type;
template <typename R, typename T, std::enable_if_t<is_jsi_v<T>, int> = 0>
auto fromJs(jsi::Runtime& rt, T&& value, const std::shared_ptr<CallInvoker>&)
-> decltype(static_cast<R>(
std::move(convert(rt, std::forward<T>(value))))) {
return static_cast<R>(std::move(convert(rt, std::forward<T>(value))));
}
template <typename R, typename T>
auto fromJs(jsi::Runtime& rt, T&& value, const std::shared_ptr<CallInvoker>&)
-> decltype(Bridging<remove_cvref_t<R>>::fromJs(
rt,
convert(rt, std::forward<T>(value)))) {
return Bridging<remove_cvref_t<R>>::fromJs(
rt, convert(rt, std::forward<T>(value)));
}
template <typename R, typename T>
auto fromJs(
jsi::Runtime& rt,
T&& value,
const std::shared_ptr<CallInvoker>& jsInvoker)
-> decltype(Bridging<remove_cvref_t<R>>::fromJs(
rt,
convert(rt, std::forward<T>(value)),
jsInvoker)) {
return Bridging<remove_cvref_t<R>>::fromJs(
rt, convert(rt, std::forward<T>(value)), jsInvoker);
}
template <typename T, std::enable_if_t<is_jsi_v<T>, int> = 0>
auto toJs(
jsi::Runtime& rt,
T&& value,
const std::shared_ptr<CallInvoker>& = nullptr) -> remove_cvref_t<T> {
return convert(rt, std::forward<T>(value));
}
template <typename T>
auto toJs(
jsi::Runtime& rt,
T&& value,
const std::shared_ptr<CallInvoker>& = nullptr)
-> decltype(Bridging<bridging_t<T>>::toJs(rt, std::forward<T>(value))) {
return Bridging<bridging_t<T>>::toJs(rt, std::forward<T>(value));
}
template <typename T>
auto toJs(
jsi::Runtime& rt,
T&& value,
const std::shared_ptr<CallInvoker>& jsInvoker)
-> decltype(Bridging<bridging_t<T>>::toJs(
rt,
std::forward<T>(value),
jsInvoker)) {
return Bridging<bridging_t<T>>::toJs(rt, std::forward<T>(value), jsInvoker);
}
template <typename, typename = jsi::Value, typename = void>
inline constexpr bool supportsFromJs = false;
template <typename T, typename Arg>
inline constexpr bool supportsFromJs<
T,
Arg,
std::void_t<decltype(fromJs<T>(
std::declval<jsi::Runtime&>(),
std::declval<Arg>(),
nullptr))>> = true;
template <typename T>
inline constexpr bool supportsFromJs<
T,
jsi::Value,
std::void_t<decltype(fromJs<T>(
std::declval<jsi::Runtime&>(),
std::declval<jsi::Value>(),
nullptr))>> = true;
template <typename, typename = jsi::Value, typename = void>
inline constexpr bool supportsToJs = false;
template <typename T, typename Ret>
inline constexpr bool supportsToJs<
T,
Ret,
std::void_t<decltype(toJs(
std::declval<jsi::Runtime&>(),
std::declval<T>(),
nullptr))>> =
std::is_convertible_v<
decltype(toJs(
std::declval<jsi::Runtime&>(),
std::declval<T>(),
nullptr)),
Ret>;
template <typename T>
inline constexpr bool supportsToJs<
T,
jsi::Value,
std::void_t<decltype(toJs(
std::declval<jsi::Runtime&>(),
std::declval<T>(),
nullptr))>> =
std::is_convertible_v<
decltype(toJs(
std::declval<jsi::Runtime&>(),
std::declval<T>(),
nullptr)),
jsi::Value>;
} // namespace bridging
} // namespace facebook::react