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Jarred-Sumner/YeetJSIUtils.h

Created February 2, 2020 00:19
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  1. Jarred-Sumner created this gist Feb 2, 2020.
    65 changes: 65 additions & 0 deletions YeetJSIUtils.h
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    //
    // YeetJSIUTils.h
    // yeet
    //
    // Created by Jarred WSumner on 1/30/20.
    // Copyright © 2020 Facebook. All rights reserved.
    //

    #import <Foundation/Foundation.h>
    #import <jsi/jsi.h>
    #import <ReactCommon/JSCallInvoker.h>
    #import <ReactCommon/LongLivedObject.h>
    #import <React/RCTConvert.h>
    #import <React/RCTBridgeModule.h>
    //#import <ReactCommon/TurboModuleUtils.h>

    using namespace facebook;
    /**
    * All static helper functions are ObjC++ specific.
    */
    jsi::Value convertNSNumberToJSIBoolean(jsi::Runtime &runtime, NSNumber *value);
    jsi::Value convertNSNumberToJSINumber(jsi::Runtime &runtime, NSNumber *value);
    jsi::String convertNSStringToJSIString(jsi::Runtime &runtime, NSString *value);
    jsi::Value convertObjCObjectToJSIValue(jsi::Runtime &runtime, id value);;
    jsi::Object convertNSDictionaryToJSIObject(jsi::Runtime &runtime, NSDictionary *value);
    jsi::Array convertNSArrayToJSIArray(jsi::Runtime &runtime, NSArray *value);
    std::vector<jsi::Value> convertNSArrayToStdVector(jsi::Runtime &runtime, NSArray *value);
    jsi::Value convertObjCObjectToJSIValue(jsi::Runtime &runtime, id value);
    id convertJSIValueToObjCObject(
    jsi::Runtime &runtime,
    const jsi::Value &value);
    NSString* convertJSIStringToNSString(jsi::Runtime &runtime, const jsi::String &value);
    NSArray* convertJSIArrayToNSArray(
    jsi::Runtime &runtime,
    const jsi::Array &value);
    NSDictionary *convertJSIObjectToNSDictionary(
    jsi::Runtime &runtime,
    const jsi::Object &value);
    RCTResponseSenderBlock convertJSIFunctionToCallback(
    jsi::Runtime &runtime,
    const jsi::Function &value);
    id convertJSIValueToObjCObject(
    jsi::Runtime &runtime,
    const jsi::Value &value);
    RCTResponseSenderBlock convertJSIFunctionToCallback(
    jsi::Runtime &runtime,
    const jsi::Function &value);

    struct Promise {
    Promise(jsi::Runtime &rt, jsi::Function resolve, jsi::Function reject);

    void resolve(const jsi::Value &result);
    void reject(const std::string &error);

    jsi::Runtime &runtime_;
    jsi::Function resolve_;
    jsi::Function reject_;
    };

    using PromiseSetupFunctionType =
    std::function<void(jsi::Runtime &rt, std::shared_ptr<Promise>)>;
    jsi::Value createPromiseAsJSIValue(
    jsi::Runtime &rt,
    const PromiseSetupFunctionType func);

    198 changes: 198 additions & 0 deletions YeetJSIUtils.mm
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    //
    // REAJsiUtilities.cpp
    // RNReanimated
    //
    // Created by Christian Falch on 25/04/2019.
    // Copyright © 2019 Facebook. All rights reserved.
    //

    #include "YeetJSIUTils.h"



    #import <ReactCommon/TurboModule.h>

    /**
    * All helper functions are ObjC++ specific.
    */
    jsi::Value convertNSNumberToJSIBoolean(jsi::Runtime &runtime, NSNumber *value)
    {
    return jsi::Value((bool)[value boolValue]);
    }

    jsi::Value convertNSNumberToJSINumber(jsi::Runtime &runtime, NSNumber *value)
    {
    return jsi::Value([value doubleValue]);
    }

    jsi::String convertNSStringToJSIString(jsi::Runtime &runtime, NSString *value)
    {
    return jsi::String::createFromUtf8(runtime, [value UTF8String] ?: "");
    }

    jsi::Value convertObjCObjectToJSIValue(jsi::Runtime &runtime, id value);
    jsi::Object convertNSDictionaryToJSIObject(jsi::Runtime &runtime, NSDictionary *value)
    {
    jsi::Object result = jsi::Object(runtime);
    for (NSString *k in value) {
    result.setProperty(runtime, [k UTF8String], convertObjCObjectToJSIValue(runtime, value[k]));
    }
    return result;
    }

    jsi::Array convertNSArrayToJSIArray(jsi::Runtime &runtime, NSArray *value)
    {
    jsi::Array result = jsi::Array(runtime, value.count);
    for (size_t i = 0; i < value.count; i++) {
    result.setValueAtIndex(runtime, i, convertObjCObjectToJSIValue(runtime, value[i]));
    }
    return result;
    }

    std::vector<jsi::Value> convertNSArrayToStdVector(jsi::Runtime &runtime, NSArray *value)
    {
    std::vector<jsi::Value> result;
    for (size_t i = 0; i < value.count; i++) {
    result.emplace_back(convertObjCObjectToJSIValue(runtime, value[i]));
    }
    return result;
    }

    jsi::Value convertObjCObjectToJSIValue(jsi::Runtime &runtime, id value)
    {
    if ([value isKindOfClass:[NSString class]]) {
    return convertNSStringToJSIString(runtime, (NSString *)value);
    } else if ([value isKindOfClass:[NSNumber class]]) {
    if ([value isKindOfClass:[@YES class]]) {
    return convertNSNumberToJSIBoolean(runtime, (NSNumber *)value);
    }
    return convertNSNumberToJSINumber(runtime, (NSNumber *)value);
    } else if ([value isKindOfClass:[NSDictionary class]]) {
    return convertNSDictionaryToJSIObject(runtime, (NSDictionary *)value);
    } else if ([value isKindOfClass:[NSArray class]]) {
    return convertNSArrayToJSIArray(runtime, (NSArray *)value);
    } else if (value == (id)kCFNull) {
    return jsi::Value::null();
    }
    return jsi::Value::undefined();
    }

    id convertJSIValueToObjCObject(
    jsi::Runtime &runtime,
    const jsi::Value &value);
    NSString *convertJSIStringToNSString(jsi::Runtime &runtime, const jsi::String &value)
    {
    return [NSString stringWithUTF8String:value.utf8(runtime).c_str()];
    }

    NSArray *convertJSIArrayToNSArray(
    jsi::Runtime &runtime,
    const jsi::Array &value)
    {
    size_t size = value.size(runtime);
    NSMutableArray *result = [NSMutableArray new];
    for (size_t i = 0; i < size; i++) {
    // Insert kCFNull when it's `undefined` value to preserve the indices.
    [result
    addObject:convertJSIValueToObjCObject(runtime, value.getValueAtIndex(runtime, i)) ?: (id)kCFNull];
    }
    return [result copy];
    }

    NSDictionary *convertJSIObjectToNSDictionary(
    jsi::Runtime &runtime,
    const jsi::Object &value)
    {
    jsi::Array propertyNames = value.getPropertyNames(runtime);
    size_t size = propertyNames.size(runtime);
    NSMutableDictionary *result = [NSMutableDictionary new];
    for (size_t i = 0; i < size; i++) {
    jsi::String name = propertyNames.getValueAtIndex(runtime, i).getString(runtime);
    NSString *k = convertJSIStringToNSString(runtime, name);
    id v = convertJSIValueToObjCObject(runtime, value.getProperty(runtime, name));
    if (v) {
    result[k] = v;
    }
    }
    return [result copy];
    }

    RCTResponseSenderBlock convertJSIFunctionToCallback(
    jsi::Runtime &runtime,
    const jsi::Function &value)
    {
    __block auto cb = value.getFunction(runtime);

    return ^(NSArray *responses) {
    cb.call(runtime, convertNSArrayToJSIArray(runtime, responses), 2);
    };
    }

    id convertJSIValueToObjCObject(
    jsi::Runtime &runtime,
    const jsi::Value &value)
    {
    if (value.isUndefined() || value.isNull()) {
    return nil;
    }
    if (value.isBool()) {
    return @(value.getBool());
    }
    if (value.isNumber()) {
    return @(value.getNumber());
    }
    if (value.isString()) {
    return convertJSIStringToNSString(runtime, value.getString(runtime));
    }
    if (value.isObject()) {
    jsi::Object o = value.getObject(runtime);
    if (o.isArray(runtime)) {
    return convertJSIArrayToNSArray(runtime, o.getArray(runtime));
    }
    if (o.isFunction(runtime)) {
    return convertJSIFunctionToCallback(runtime, std::move(o.getFunction(runtime)));
    }
    return convertJSIObjectToNSDictionary(runtime, o);
    }

    throw std::runtime_error("Unsupported jsi::jsi::Value kind");
    }

    Promise::Promise(jsi::Runtime &rt, jsi::Function resolve, jsi::Function reject)
    : runtime_(rt), resolve_(std::move(resolve)), reject_(std::move(reject)) {}

    void Promise::resolve(const jsi::Value &result) {
    resolve_.call(runtime_, result);
    }

    void Promise::reject(const std::string &message) {
    jsi::Object error(runtime_);
    error.setProperty(
    runtime_, "message", jsi::String::createFromUtf8(runtime_, message));
    reject_.call(runtime_, error);
    }

    jsi::Value createPromiseAsJSIValue(
    jsi::Runtime &rt,
    const PromiseSetupFunctionType func) {
    jsi::Function JSPromise = rt.global().getPropertyAsFunction(rt, "Promise");
    jsi::Function fn = jsi::Function::createFromHostFunction(
    rt,
    jsi::PropNameID::forAscii(rt, "fn"),
    2,
    [func](
    jsi::Runtime &rt2,
    const jsi::Value &thisVal,
    const jsi::Value *args,
    size_t count) {
    jsi::Function resolve = args[0].getObject(rt2).getFunction(rt2);
    jsi::Function reject = args[1].getObject(rt2).getFunction(rt2);
    auto wrapper = std::make_shared<Promise>(
    rt2, std::move(resolve), std::move(reject));
    func(rt2, wrapper);
    return jsi::Value::undefined();
    });

    return JSPromise.callAsConstructor(rt, fn);
    }