mirror of
https://github.com/facebook/react-native.git
synced 2025-11-01 09:14:26 +00:00
Christoph Purrer
c0a06d2e6f
Summary: Pull Request resolved: https://github.com/facebook/react-native/pull/35265 This adds a templating layer for C++ TurboModules to automatically generate struct templates from TurboModule specs. You have to define concrete types for those templates to use them in your C++ TurboModule. E.g. for the JS flow type: ``` export type ObjectStruct = {| a: number, b: string, c?: ?string, |}; ``` code-gen will now generate the following template code: ``` #pragma mark - NativeCxxModuleExampleCxxBaseObjectStruct template <typename P0, typename P1, typename P2> struct NativeCxxModuleExampleCxxBaseObjectStruct { P0 a; P1 b; P2 c; bool operator==(const NativeCxxModuleExampleCxxBaseObjectStruct &other) const { return a == other.a && b == other.b && c == other.c; } }; template <typename P0, typename P1, typename P2> struct NativeCxxModuleExampleCxxBaseObjectStructBridging { static NativeCxxModuleExampleCxxBaseObjectStruct<P0, P1, P2> fromJs( jsi::Runtime &rt, const jsi::Object &value, const std::shared_ptr<CallInvoker> &jsInvoker) { NativeCxxModuleExampleCxxBaseObjectStruct<P0, P1, P2> result{ bridging::fromJs<P0>(rt, value.getProperty(rt, "a"), jsInvoker), bridging::fromJs<P1>(rt, value.getProperty(rt, "b"), jsInvoker), bridging::fromJs<P2>(rt, value.getProperty(rt, "c"), jsInvoker)}; return result; } static jsi::Object toJs( jsi::Runtime &rt, const NativeCxxModuleExampleCxxBaseObjectStruct<P0, P1, P2> &value) { auto result = facebook::jsi::Object(rt); result.setProperty(rt, "a", bridging::toJs(rt, value.a)); result.setProperty(rt, "b", bridging::toJs(rt, value.b)); if (value.c) { result.setProperty(rt, "c", bridging::toJs(rt, value.c.value())); } return result; } }; ``` and you can use it in our C++ TurboModule for example as: ``` using ObjectStruct = NativeCxxModuleExampleCxxBaseObjectStruct< int32_t, std::string, std::optional<std::string>>; template <> struct Bridging<ObjectStruct> : NativeCxxModuleExampleCxxBaseObjectStructBridging< int32_t, std::string, std::optional<std::string>> {}; ``` or as ``` using ObjectStruct = NativeCxxModuleExampleCxxBaseObjectStruct< float, folly::StringPiece, std::optional<std::string>>; template <> struct Bridging<ObjectStruct> : NativeCxxModuleExampleCxxBaseObjectStructBridging< float, folly::StringPiece, std::optional<std::string>> {}; ``` Or as ... Changelog: [Internal] Reviewed By: rshest Differential Revision: D41133761 fbshipit-source-id: fdf36e51073cb46c5234f6121842c79a884899c7
99 lines
2.7 KiB
C++
99 lines
2.7 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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#if __has_include(<React-Codegen/AppSpecsJSI.h>) // CocoaPod headers on Apple
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#include <React-Codegen/AppSpecsJSI.h>
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#elif __has_include("AppSpecsJSI.h") // Cmake headers on Android
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#include "AppSpecsJSI.h"
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#else // BUCK headers
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#include <AppSpecs/AppSpecsJSI.h>
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#endif
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#include <memory>
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#include <set>
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#include <string>
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#include <vector>
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namespace facebook::react {
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#pragma mark - Structs
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using ConstantsStruct =
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NativeCxxModuleExampleCxxBaseConstantsStruct<bool, int32_t, std::string>;
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template <>
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struct Bridging<ConstantsStruct>
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: NativeCxxModuleExampleCxxBaseConstantsStructBridging<
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bool,
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int32_t,
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std::string> {};
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using ObjectStruct = NativeCxxModuleExampleCxxBaseObjectStruct<
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int32_t,
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std::string,
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std::optional<std::string>>;
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template <>
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struct Bridging<ObjectStruct>
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: NativeCxxModuleExampleCxxBaseObjectStructBridging<
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int32_t,
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std::string,
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std::optional<std::string>> {};
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using ValueStruct =
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NativeCxxModuleExampleCxxBaseValueStruct<double, std::string, ObjectStruct>;
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template <>
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struct Bridging<ValueStruct> : NativeCxxModuleExampleCxxBaseValueStructBridging<
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double,
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std::string,
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ObjectStruct> {};
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#pragma mark - implementation
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class NativeCxxModuleExample
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: public NativeCxxModuleExampleCxxSpec<NativeCxxModuleExample> {
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public:
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NativeCxxModuleExample(std::shared_ptr<CallInvoker> jsInvoker);
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void getValueWithCallback(
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jsi::Runtime &rt,
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AsyncCallback<std::string> callback);
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std::vector<std::optional<ObjectStruct>> getArray(
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jsi::Runtime &rt,
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std::vector<std::optional<ObjectStruct>> arg);
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bool getBool(jsi::Runtime &rt, bool arg);
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ConstantsStruct getConstants(jsi::Runtime &rt);
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int32_t getEnum(jsi::Runtime &rt, int32_t arg);
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std::map<std::string, std::optional<int32_t>> getMap(
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jsi::Runtime &rt,
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std::map<std::string, std::optional<int32_t>> arg);
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double getNumber(jsi::Runtime &rt, double arg);
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ObjectStruct getObject(jsi::Runtime &rt, ObjectStruct arg);
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std::set<float> getSet(jsi::Runtime &rt, std::set<float> arg);
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std::string getString(jsi::Runtime &rt, std::string arg);
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std::string getUnion(jsi::Runtime &rt, float x, std::string y, jsi::Object z);
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ValueStruct
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getValue(jsi::Runtime &rt, double x, std::string y, ObjectStruct z);
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AsyncPromise<std::string> getValueWithPromise(jsi::Runtime &rt, bool error);
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void voidFunc(jsi::Runtime &rt);
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};
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} // namespace facebook::react
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