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Schnappix/node_modules/expo-modules-core/ios/JSI/EXJavaScriptObject.mm
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// Copyright 2022-present 650 Industries. All rights reserved.
#import <ExpoModulesCore/EXJSIConversions.h>
#import <ExpoModulesCore/EXJavaScriptValue.h>
#import <ExpoModulesCore/EXJavaScriptObject.h>
#import <ExpoModulesCore/EXJavaScriptRuntime.h>
#import <ExpoModulesCore/EXJavaScriptWeakObject.h>
#import <ExpoModulesCore/EXJSIUtils.h>
#import <ExpoModulesCore/JSIUtils.h>
@implementation EXJavaScriptObject {
/**
Pointer to the `EXJavaScriptRuntime` wrapper.
\note It must be weak because only then the original runtime can be safely deallocated
when the JS engine wants to without unsetting it on each created object.
*/
__weak EXJavaScriptRuntime *_runtime;
/**
Shared pointer to the original JSI object that is being wrapped by `EXJavaScriptObject` class.
*/
std::shared_ptr<jsi::Object> _jsObjectPtr;
}
- (nonnull instancetype)initWith:(std::shared_ptr<jsi::Object>)jsObjectPtr
runtime:(nonnull EXJavaScriptRuntime *)runtime
{
if (self = [super init]) {
_runtime = runtime;
_jsObjectPtr = jsObjectPtr;
}
return self;
}
- (nonnull jsi::Object *)get
{
return _jsObjectPtr.get();
}
- (std::shared_ptr<jsi::Object>)getShared
{
return _jsObjectPtr;
}
#pragma mark - Accessing object properties
- (BOOL)hasProperty:(nonnull NSString *)name
{
return _jsObjectPtr->hasProperty(*[_runtime get], [name UTF8String]);
}
- (nonnull EXJavaScriptValue *)getProperty:(nonnull NSString *)name
{
return [[EXJavaScriptValue alloc] initWithRuntime:_runtime
value:_jsObjectPtr->getProperty(*[_runtime get], [name UTF8String])];
}
- (nonnull NSArray<NSString *> *)getPropertyNames
{
jsi::Runtime *runtime = [_runtime get];
jsi::Array propertyNamesArray = _jsObjectPtr->getPropertyNames(*[_runtime get]);
return expo::convertJSIArrayToNSArray(*runtime, propertyNamesArray, nullptr);
}
#pragma mark - Modifying object properties
- (void)setProperty:(nonnull NSString *)name value:(nullable id)value
{
jsi::Value jsiValue = expo::convertObjCObjectToJSIValue(*[_runtime get], value);
_jsObjectPtr->setProperty(*[_runtime get], [name UTF8String], jsiValue);
}
- (void)defineProperty:(nonnull NSString *)name descriptor:(nonnull EXJavaScriptObject *)descriptor
{
jsi::Runtime *runtime = [_runtime get];
jsi::Object *jsThis = _jsObjectPtr.get();
expo::common::defineProperty(*runtime, jsThis, [name UTF8String], std::move(*[descriptor get]));
}
- (void)defineProperty:(nonnull NSString *)name value:(nullable id)value options:(EXJavaScriptObjectPropertyDescriptor)options
{
jsi::Runtime *runtime = [_runtime get];
jsi::Object *jsThis = _jsObjectPtr.get();
jsi::Object descriptor = [self preparePropertyDescriptorWithOptions:options];
descriptor.setProperty(*runtime, "value", expo::convertObjCObjectToJSIValue(*runtime, value));
expo::common::defineProperty(*runtime, jsThis, [name UTF8String], std::move(descriptor));
}
#pragma mark - WeakObject
- (nonnull EXJavaScriptWeakObject *)createWeak
{
return [[EXJavaScriptWeakObject alloc] initWith:_jsObjectPtr runtime:_runtime];
}
#pragma mark - Deallocator
- (void)setObjectDeallocator:(void (^)(void))deallocatorBlock
{
expo::common::setDeallocator(*[_runtime get], _jsObjectPtr, deallocatorBlock);
}
#pragma mark - Equality
- (BOOL)isEqual:(id)object
{
if ([object isKindOfClass:EXJavaScriptObject.class]) {
jsi::Runtime *runtime = [_runtime get];
jsi::Object *a = _jsObjectPtr.get();
jsi::Object *b = [(EXJavaScriptObject *)object get];
return jsi::Object::strictEquals(*runtime, *a, *b);
}
return false;
}
#pragma mark - Memory pressure
- (void)setExternalMemoryPressure:(size_t)size
{
_jsObjectPtr->setExternalMemoryPressure(*[_runtime get], size);
}
#pragma mark - Private helpers
- (jsi::Object)preparePropertyDescriptorWithOptions:(EXJavaScriptObjectPropertyDescriptor)options
{
jsi::Runtime *runtime = [_runtime get];
jsi::Object descriptor(*runtime);
descriptor.setProperty(*runtime, "configurable", (bool)(options & EXJavaScriptObjectPropertyDescriptorConfigurable));
descriptor.setProperty(*runtime, "enumerable", (bool)(options & EXJavaScriptObjectPropertyDescriptorEnumerable));
descriptor.setProperty(*runtime, "writable", (bool)(options & EXJavaScriptObjectPropertyDescriptorWritable));
return descriptor;
}
@end