mirror of
https://github.com/JohnEstropia/CoreStore.git
synced 2026-01-14 21:23:43 +01:00
465 lines
17 KiB
Swift
465 lines
17 KiB
Swift
//
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// Value.swift
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// CoreStore
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//
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// Copyright © 2017 John Rommel Estropia
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in all
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// copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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// SOFTWARE.
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//
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import CoreData
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import Foundation
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// MARK: Operators
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infix operator .= : AssignmentPrecedence
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// MARK: - DynamicObject
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public extension DynamicObject where Self: CoreStoreObject {
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public typealias Value = ValueContainer<Self>
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public typealias Transformable = TransformableContainer<Self>
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}
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// MARK: - ValueContainer
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public enum ValueContainer<O: CoreStoreObject> {
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// MARK: - Required
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public final class Required<V: ImportableAttributeType>: AttributeProtocol {
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public static func .= (_ attribute: ValueContainer<O>.Required<V>, _ value: V) {
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attribute.value = value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: ValueContainer<O>.Required<V>, _ attribute2: ValueContainer<O2>.Required<V>) {
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attribute.value = attribute2.value
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}
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public init(_ keyPath: KeyPath, `default`: V = V.cs_emptyValue(), isIndexed: Bool = false, isTransient: Bool = false, customGetter: @escaping (_ `self`: O, _ getValue: () -> V) -> V = { $1() }, customSetter: @escaping (_ `self`: O, _ setValue: (V) -> Void, _ newValue: V) -> Void = { $1($2) }) {
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self.keyPath = keyPath
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self.isIndexed = isIndexed
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self.isTransient = isTransient
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self.defaultValue = `default`.cs_toImportableNativeType()
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self.customGetter = customGetter
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self.customSetter = customSetter
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}
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public var value: V {
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get {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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return self.customGetter(
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object,
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{ () -> V in
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return object.rawObject!.getValue(
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forKvcKey: self.keyPath,
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didGetValue: { V.cs_fromImportableNativeType($0 as! V.ImportableNativeType)! }
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)
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}
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)
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}
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set {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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CoreStore.assert(
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object.rawObject!.isEditableInContext() == true,
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"Attempted to update a \(cs_typeName(O.self))'s value from outside a transaction."
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)
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self.customSetter(
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object,
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{ (newValue: V) -> Void in
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object.rawObject!.setValue(
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newValue,
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forKvcKey: self.keyPath,
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willSetValue: { $0.cs_toImportableNativeType() }
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)
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},
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newValue
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)
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}
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}
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// MARK: AttributeProtocol
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internal static var attributeType: NSAttributeType {
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return V.cs_rawAttributeType
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}
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public let keyPath: KeyPath
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internal let isOptional = false
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internal let isIndexed: Bool
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internal let isTransient: Bool
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internal let defaultValue: Any?
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internal var parentObject: () -> CoreStoreObject = {
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CoreStore.abort("Attempted to access values from a \(cs_typeName(O.self)) meta object. Meta objects are only used for querying keyPaths and infering types.")
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}
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// MARK: Private
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private let customGetter: (_ `self`: O, _ getValue: () -> V) -> V
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private let customSetter: (_ `self`: O, _ setValue: (V) -> Void, _ newValue: V) -> Void
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}
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// MARK: - Optional
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public final class Optional<V: ImportableAttributeType>: AttributeProtocol {
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public static func .= (_ attribute: ValueContainer<O>.Optional<V>, _ value: V?) {
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attribute.value = value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: ValueContainer<O>.Optional<V>, _ attribute2: ValueContainer<O2>.Optional<V>) {
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attribute.value = attribute2.value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: ValueContainer<O>.Optional<V>, _ attribute2: ValueContainer<O2>.Required<V>) {
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attribute.value = attribute2.value
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}
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public init(_ keyPath: KeyPath, `default`: V? = nil, isTransient: Bool = false, customGetter: @escaping (_ `self`: O, _ getValue: () -> V?) -> V? = { $1() }, customSetter: @escaping (_ `self`: O, _ setValue: (V?) -> Void, _ newValue: V?) -> Void = { $1($2) }) {
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self.keyPath = keyPath
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self.isTransient = isTransient
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self.defaultValue = `default`?.cs_toImportableNativeType()
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self.customGetter = customGetter
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self.customSetter = customSetter
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}
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public var value: V? {
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get {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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return self.customGetter(
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object,
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{ () -> V? in
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return object.rawObject!.getValue(
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forKvcKey: self.keyPath,
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didGetValue: { ($0 as! V.ImportableNativeType?).flatMap(V.cs_fromImportableNativeType) }
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)
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}
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)
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}
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set {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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CoreStore.assert(
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object.rawObject!.isEditableInContext() == true,
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"Attempted to update a \(cs_typeName(O.self))'s value from outside a transaction."
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)
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self.customSetter(
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object,
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{ (newValue: V?) -> Void in
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object.rawObject!.setValue(
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newValue,
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forKvcKey: self.keyPath,
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willSetValue: { $0?.cs_toImportableNativeType() }
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)
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},
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newValue
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)
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}
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}
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// MARK: AttributeProtocol
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internal static var attributeType: NSAttributeType {
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return V.cs_rawAttributeType
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}
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public let keyPath: KeyPath
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internal let isOptional = true
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internal let isIndexed = false
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internal let isTransient: Bool
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internal let defaultValue: Any?
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internal var parentObject: () -> CoreStoreObject = {
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CoreStore.abort("Attempted to access values from a \(cs_typeName(O.self)) meta object. Meta objects are only used for querying keyPaths and infering types.")
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}
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// MARK: Private
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private let customGetter: (_ `self`: O, _ getValue: () -> V?) -> V?
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private let customSetter: (_ `self`: O, _ setValue: (V?) -> Void, _ newValue: V?) -> Void
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}
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}
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// MARK: - TransformableContainer
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public enum TransformableContainer<O: CoreStoreObject> {
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// MARK: - Required
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public final class Required<V: NSCoding & NSCopying>: AttributeProtocol {
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public static func .= (_ attribute: TransformableContainer<O>.Required<V>, _ value: V) {
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attribute.value = value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: TransformableContainer<O>.Required<V>, _ attribute2: TransformableContainer<O2>.Required<V>) {
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attribute.value = attribute2.value
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}
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public init(_ keyPath: KeyPath, `default`: V, isIndexed: Bool = false, isTransient: Bool = false, customGetter: @escaping (_ `self`: O, _ getValue: () -> V) -> V = { $1() }, customSetter: @escaping (_ `self`: O, _ setValue: (V) -> Void, _ newValue: V) -> Void = { $1($2) }) {
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self.keyPath = keyPath
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self.defaultValue = `default`
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self.isIndexed = isIndexed
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self.isTransient = isTransient
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self.customGetter = customGetter
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self.customSetter = customSetter
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}
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public var value: V {
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get {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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return self.customGetter(
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object,
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{ () -> V in
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return object.rawObject!.getValue(
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forKvcKey: self.keyPath,
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didGetValue: { $0 as! V }
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)
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}
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)
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}
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set {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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CoreStore.assert(
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object.rawObject!.isEditableInContext() == true,
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"Attempted to update a \(cs_typeName(O.self))'s value from outside a transaction."
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)
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self.customSetter(
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object,
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{ (newValue: V) -> Void in
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object.rawObject!.setValue(
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newValue,
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forKvcKey: self.keyPath
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)
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},
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newValue
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)
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}
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}
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// MARK: AttributeProtocol
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internal static var attributeType: NSAttributeType {
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return .transformableAttributeType
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}
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public let keyPath: KeyPath
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internal let isOptional = false
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internal let isIndexed: Bool
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internal let isTransient: Bool
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internal let defaultValue: Any?
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internal var parentObject: () -> CoreStoreObject = {
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CoreStore.abort("Attempted to access values from a \(cs_typeName(O.self)) meta object. Meta objects are only used for querying keyPaths and infering types.")
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}
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// MARK: Private
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private let customGetter: (_ `self`: O, _ getValue: () -> V) -> V
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private let customSetter: (_ `self`: O, _ setValue: (V) -> Void, _ newValue: V) -> Void
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}
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// MARK: - Optional
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public final class Optional<V: NSCoding & NSCopying>: AttributeProtocol {
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public static func .= (_ attribute: TransformableContainer<O>.Optional<V>, _ value: V) {
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attribute.value = value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: TransformableContainer<O>.Optional<V>, _ attribute2: TransformableContainer<O2>.Optional<V>) {
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attribute.value = attribute2.value
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}
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public static func .=<O2: CoreStoreObject> (_ attribute: TransformableContainer<O>.Optional<V>, _ attribute2: TransformableContainer<O2>.Required<V>) {
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attribute.value = attribute2.value
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}
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public init(_ keyPath: KeyPath, `default`: V? = nil, isIndexed: Bool = false, isTransient: Bool = false, customGetter: @escaping (_ `self`: O, _ getValue: () -> V?) -> V? = { $1() }, customSetter: @escaping (_ `self`: O, _ setValue: (V?) -> Void, _ newValue: V?) -> Void = { $1($2) }) {
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self.keyPath = keyPath
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self.defaultValue = `default`
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self.isIndexed = isIndexed
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self.isTransient = isTransient
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self.customGetter = customGetter
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self.customSetter = customSetter
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}
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public var value: V? {
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get {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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return self.customGetter(
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object,
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{ () -> V? in
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return object.rawObject!.getValue(
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forKvcKey: self.keyPath,
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didGetValue: { $0 as! V? }
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)
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}
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)
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}
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set {
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let object = self.parentObject() as! O
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CoreStore.assert(
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object.rawObject!.isRunningInAllowedQueue() == true,
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"Attempted to access \(cs_typeName(O.self))'s value outside it's designated queue."
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)
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CoreStore.assert(
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object.rawObject!.isEditableInContext() == true,
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"Attempted to update a \(cs_typeName(O.self))'s value from outside a transaction."
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)
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self.customSetter(
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object,
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{ (newValue: V?) -> Void in
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object.rawObject!.setValue(
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newValue,
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forKvcKey: self.keyPath
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)
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},
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newValue
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)
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}
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}
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// MARK: AttributeProtocol
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internal static var attributeType: NSAttributeType {
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return .transformableAttributeType
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}
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public let keyPath: KeyPath
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internal let isOptional = false
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internal let isIndexed: Bool
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internal let isTransient: Bool
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internal let defaultValue: Any?
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internal var parentObject: () -> CoreStoreObject = {
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CoreStore.abort("Attempted to access values from a \(cs_typeName(O.self)) meta object. Meta objects are only used for querying keyPaths and infering types.")
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}
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// MARK: Private
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private let customGetter: (_ `self`: O, _ getValue: () -> V?) -> V?
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private let customSetter: (_ `self`: O, _ setValue: (V?) -> Void, _ newValue: V?) -> Void
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}
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}
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// MARK: - AttributeProtocol
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internal protocol AttributeProtocol: class {
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static var attributeType: NSAttributeType { get }
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var keyPath: KeyPath { get }
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var isOptional: Bool { get }
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var isIndexed: Bool { get }
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var isTransient: Bool { get }
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var defaultValue: Any? { get }
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var parentObject: () -> CoreStoreObject { get set }
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}
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