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Adds @Managed property wrapper

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• Keeps strong reference to wrapped managed object’s context.
• Projected value simplifies accessing properties on context’s thread.
This commit is contained in:
Riley Testut
2020-10-05 14:23:19 -07:00
parent c8b4ce8d38
commit 00e8b7c80e
2 changed files with 53 additions and 0 deletions
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4
AltStore.xcodeproj/project.pbxproj
View File

@@ -226,6 +226,7 @@
BFAECC5F2501B0BF00528F27 /* ALTConstants.h in Headers */ = {isa = PBXBuildFile; fileRef = BFD52BD222A06EFB000B7ED1 /* ALTConstants.h */; settings = {ATTRIBUTES = (Public, ); }; };
BFAECC602501B0BF00528F27 /* NSError+ALTServerError.h in Headers */ = {isa = PBXBuildFile; fileRef = BF1E314822A060F400370A3C /* NSError+ALTServerError.h */; settings = {ATTRIBUTES = (Public, ); }; };
BFB3645A2325985F00CD0EB1 /* FindServerOperation.swift in Sources */ = {isa = PBXBuildFile; fileRef = BFB364592325985F00CD0EB1 /* FindServerOperation.swift */; };
BFB39B5C252BC10E00D1BE50 /* Managed.swift in Sources */ = {isa = PBXBuildFile; fileRef = BFB39B5B252BC10E00D1BE50 /* Managed.swift */; };
BFB4323F22DE852000B7F8BC /* UpdateCollectionViewCell.xib in Resources */ = {isa = PBXBuildFile; fileRef = BFB4323E22DE852000B7F8BC /* UpdateCollectionViewCell.xib */; };
BFB49AAA23834CF900D542D9 /* ALTAnisetteData.m in Sources */ = {isa = PBXBuildFile; fileRef = BFB49AA823834CF900D542D9 /* ALTAnisetteData.m */; };
BFB6B21E231870160022A802 /* NewsViewController.swift in Sources */ = {isa = PBXBuildFile; fileRef = BFB6B21D231870160022A802 /* NewsViewController.swift */; };
@@ -655,6 +656,7 @@
BFA8172A23C5633D001B5953 /* FetchAnisetteDataOperation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FetchAnisetteDataOperation.swift; sourceTree = "<group>"; };
BFB1169C22932DB100BB457C /* apps.json */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = text.json; path = apps.json; sourceTree = "<group>"; };
BFB364592325985F00CD0EB1 /* FindServerOperation.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = FindServerOperation.swift; sourceTree = "<group>"; };
BFB39B5B252BC10E00D1BE50 /* Managed.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = Managed.swift; sourceTree = "<group>"; };
BFB4323E22DE852000B7F8BC /* UpdateCollectionViewCell.xib */ = {isa = PBXFileReference; lastKnownFileType = file.xib; path = UpdateCollectionViewCell.xib; sourceTree = "<group>"; };
BFB49AA823834CF900D542D9 /* ALTAnisetteData.m */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.objc; name = ALTAnisetteData.m; path = "Dependencies/AltSign/AltSign/Model/Apple API/ALTAnisetteData.m"; sourceTree = SOURCE_ROOT; };
BFB49AA923834CF900D542D9 /* ALTAnisetteData.h */ = {isa = PBXFileReference; fileEncoding = 4; lastKnownFileType = sourcecode.c.h; name = ALTAnisetteData.h; path = "Dependencies/AltSign/AltSign/Model/Apple API/ALTAnisetteData.h"; sourceTree = SOURCE_ROOT; };
@@ -901,6 +903,7 @@
isa = PBXGroup;
children = (
BF41B807233433C100C593A3 /* LoadingState.swift */,
BFB39B5B252BC10E00D1BE50 /* Managed.swift */,
);
path = Types;
sourceTree = "<group>";
@@ -2387,6 +2390,7 @@
BFF0B69A2322D7D0007A79E1 /* UIScreen+CompactHeight.swift in Sources */,
BF8F69C222E659F700049BA1 /* AppContentViewController.swift in Sources */,
BF08858522DE7EC800DE9F1E /* UpdateCollectionViewCell.swift in Sources */,
BFB39B5C252BC10E00D1BE50 /* Managed.swift in Sources */,
BF770E5822BC3D0F002A40FE /* RefreshGroup.swift in Sources */,
BF18B0F122E25DF9005C4CF5 /* ToastView.swift in Sources */,
BF3D649F22E7B24C00E9056B /* CollapsingTextView.swift in Sources */,

49
AltStore/Types/Managed.swift Normal file
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@@ -0,0 +1,49 @@
//
// Managed.swift
// AltStore
//
// Created by Riley Testut on 10/5/20.
// Copyright © 2020 Riley Testut. All rights reserved.
//
import Foundation
import CoreData
@propertyWrapper @dynamicMemberLookup
struct Managed<ManagedObject: NSManagedObject>
{
var wrappedValue: ManagedObject {
didSet {
self.managedObjectContext = self.wrappedValue.managedObjectContext
}
}
private var managedObjectContext: NSManagedObjectContext?
var projectedValue: Managed<ManagedObject> {
return self
}
init(wrappedValue: ManagedObject)
{
self.wrappedValue = wrappedValue
self.managedObjectContext = wrappedValue.managedObjectContext
}
subscript<T>(dynamicMember keyPath: KeyPath<ManagedObject, T>) -> T
{
var result: T!
if let context = self.managedObjectContext
{
context.performAndWait {
result = self.wrappedValue[keyPath: keyPath]
}
}
else
{
result = self.wrappedValue[keyPath: keyPath]
}
return result
}
}