(WIP) SwiftUI working demo for LiveList<D>

Sources/DataStack+DataSources.swift

@@ -0,0 +1,171 @@
+//
+//  DataStack+DataSources.swift
+//  CoreStore iOS
+//
+//  Copyright © 2018 John Rommel Estropia
+//
+//  Permission is hereby granted, free of charge, to any person obtaining a copy
+//  of this software and associated documentation files (the "Software"), to deal
+//  in the Software without restriction, including without limitation the rights
+//  to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+//  copies of the Software, and to permit persons to whom the Software is
+//  furnished to do so, subject to the following conditions:
+//
+//  The above copyright notice and this permission notice shall be included in all
+//  copies or substantial portions of the Software.
+//
+//  THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+//  IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+//  FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+//  AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+//  LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+//  OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+//  SOFTWARE.
+//
+
+#if canImport(UIKit) || canImport(AppKit)
+
+import Foundation
+import CoreData
+
+
+// MARK: - DataStack
+
+@available(iOS 13.0, tvOS 13.0, watchOS 6.0, macOS 15.0, *)
+extension DataStack {
+
+    public func liveList<D>(_ from: From<D>, _ fetchClauses: FetchClause...) -> LiveList<D> {
+
+        return self.liveList(from, fetchClauses)
+    }
+
+    public func liveList<D>(_ from: From<D>, _ fetchClauses: [FetchClause]) -> LiveList<D> {
+
+        return LiveList(
+            dataStack: self,
+            from: from,
+            sectionBy: nil,
+            applyFetchClauses: { fetchRequest in
+
+                fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
+
+                Internals.assert(
+                    fetchRequest.sortDescriptors?.isEmpty == false,
+                    "An \(Internals.typeName(LiveList<D>.self)) requires a sort information. Specify from a \(Internals.typeName(OrderBy<D>.self)) clause or any custom \(Internals.typeName(FetchClause.self)) that provides a sort descriptor."
+                )
+            }
+        )
+    }
+
+    public func liveList<B: FetchChainableBuilderType>(_ clauseChain: B) -> LiveList<B.ObjectType> {
+
+        return self.liveList(
+            clauseChain.from,
+            clauseChain.fetchClauses
+        )
+    }
+
+    public func liveList<D>(createAsynchronously: @escaping (LiveList<D>) -> Void, _ from: From<D>, _ fetchClauses: FetchClause...) {
+
+        self.liveList(
+            createAsynchronously: createAsynchronously,
+            from, fetchClauses
+        )
+    }
+
+    public func liveList<D>(createAsynchronously: @escaping (LiveList<D>) -> Void, _ from: From<D>, _ fetchClauses: [FetchClause])  {
+
+        _ = LiveList(
+            dataStack: self,
+            from: from,
+            sectionBy: nil,
+            applyFetchClauses: { fetchRequest in
+
+                fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
+
+                Internals.assert(
+                    fetchRequest.sortDescriptors?.isEmpty == false,
+                    "An \(Internals.typeName(LiveList<D>.self)) requires a sort information. Specify from a \(Internals.typeName(OrderBy<D>.self)) clause or any custom \(Internals.typeName(FetchClause.self)) that provides a sort descriptor."
+                )
+            },
+            createAsynchronously: createAsynchronously
+        )
+    }
+
+    public func liveList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) -> LiveList<D> {
+
+        return self.liveList(
+            from,
+            sectionBy,
+            fetchClauses
+        )
+    }
+
+    public func liveList<D>(_ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) -> LiveList<D> {
+
+        return LiveList(
+            dataStack: self,
+            from: from,
+            sectionBy: sectionBy,
+            applyFetchClauses: { fetchRequest in
+
+                fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
+
+                Internals.assert(
+                    fetchRequest.sortDescriptors?.isEmpty == false,
+                    "An \(Internals.typeName(LiveList<D>.self)) requires a sort information. Specify from a \(Internals.typeName(OrderBy<D>.self)) clause or any custom \(Internals.typeName(FetchClause.self)) that provides a sort descriptor."
+                )
+            }
+        )
+    }
+
+    public func liveList<B: SectionMonitorBuilderType>(_ clauseChain: B) -> LiveList<B.ObjectType> {
+
+        return self.liveList(
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
+
+    public func liveList<D>(createAsynchronously: @escaping (LiveList<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: FetchClause...) {
+
+        self.liveList(
+            createAsynchronously: createAsynchronously,
+            from,
+            sectionBy,
+            fetchClauses
+        )
+    }
+
+    public func liveList<D>(createAsynchronously: @escaping (LiveList<D>) -> Void, _ from: From<D>, _ sectionBy: SectionBy<D>, _ fetchClauses: [FetchClause]) {
+
+        _ = LiveList(
+            dataStack: self,
+            from: from,
+            sectionBy: sectionBy,
+            applyFetchClauses: { fetchRequest in
+
+                fetchClauses.forEach { $0.applyToFetchRequest(fetchRequest) }
+
+                Internals.assert(
+                    fetchRequest.sortDescriptors?.isEmpty == false,
+                    "An \(Internals.typeName(LiveList<D>.self)) requires a sort information. Specify from a \(Internals.typeName(OrderBy<D>.self)) clause or any custom \(Internals.typeName(FetchClause.self)) that provides a sort descriptor."
+                )
+            },
+            createAsynchronously: createAsynchronously
+        )
+    }
+
+    public func liveList<B: SectionMonitorBuilderType>(createAsynchronously: @escaping (LiveList<B.ObjectType>) -> Void, _ clauseChain: B) {
+
+        self.liveList(
+            createAsynchronously: createAsynchronously,
+            clauseChain.from,
+            clauseChain.sectionBy,
+            clauseChain.fetchClauses
+        )
+    }
+}
+
+#endif