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35 changes: 34 additions & 1 deletion
35
Sources/OpenSwiftUI/DataAndStorage/Preferences/Internal/PreferenceList.swift
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struct PreferenceList {} | ||
// | ||
// PreferenceList.swift | ||
// OpenSwiftUI | ||
// | ||
// Created by Kyle on 2023/1/5. | ||
// Lastest Version: iOS 15.5 | ||
// Status: WIP | ||
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struct PreferenceList { | ||
private var first: PreferenceNode? | ||
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subscript<Key: PreferenceKey>(_ keyType: Key.Type) -> Value<Key.Value> { | ||
get { fatalError("TODO") } | ||
set { fatalError("TODO") } | ||
} | ||
} | ||
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extension PreferenceList { | ||
struct Value<V> { | ||
var value: V | ||
var seed: VersionSeed | ||
} | ||
} | ||
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private class PreferenceNode { | ||
let keyType: Any.Type | ||
let seed: VersionSeed | ||
let mergedSeed: VersionSeed | ||
let next: PreferenceNode? | ||
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init(keyType: Any.Type, seed: VersionSeed, next: PreferenceNode?) { | ||
fatalError("TODO") | ||
} | ||
} |
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// | ||
// VersionSeed.swift | ||
// OpenSwiftUI | ||
// | ||
// Created by Kyle on 2024/1/5. | ||
// Lastest Version: iOS 15.5 | ||
// Status: WIP | ||
// ID: 1B00D77CE2C80F9C0F5A59FDEA30ED6B | ||
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struct VersionSeed: CustomStringConvertible { | ||
var value: UInt32 | ||
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var description: String { | ||
switch value { | ||
case VersionSeed.zero.value: "empty" | ||
case VersionSeed.invalid.value: "invalid" | ||
default: value.description | ||
} | ||
} | ||
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static var zero: VersionSeed { VersionSeed(value: .zero) } | ||
static var invalid: VersionSeed { VersionSeed(value: .max) } | ||
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var isValid: Bool { value != VersionSeed.invalid.value } | ||
} | ||
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struct VersionSeedTracker<Key: HostPreferenceKey> { | ||
var seed: VersionSeed | ||
} | ||
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struct VersionSeedSetTracker { | ||
private var values: [Value] | ||
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func addPreference<Key: HostPreferenceKey>(_ keyType: Key.Type) { | ||
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} | ||
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func updateSeeds(to: PreferenceList) { | ||
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} | ||
} | ||
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extension VersionSeedSetTracker { | ||
private struct Value { | ||
var key: AnyPreferenceKey.Type | ||
var seed: VersionSeed | ||
} | ||
} | ||
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extension VersionSeedSetTracker { | ||
private struct HasChangesVisitor: PreferenceKeyVisitor { | ||
let preferences: PreferenceList | ||
var seed: VersionSeed | ||
var matches: Bool? | ||
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mutating func visit<Key>(key: Key.Type) where Key : PreferenceKey { | ||
let valueSeed = preferences[key].seed | ||
matches = seed.isValid && valueSeed.isValid && seed.value == valueSeed.value | ||
} | ||
} | ||
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private struct UpdateSeedVisitor: PreferenceKeyVisitor { | ||
let preferences: PreferenceList | ||
var seed: VersionSeed? | ||
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mutating func visit<Key>(key: Key.Type) where Key : PreferenceKey { | ||
seed = preferences[key].seed | ||
} | ||
} | ||
} |
21 changes: 21 additions & 0 deletions
21
Tests/OpenSwiftUITests/Internal/VersionSeed/VersionSeedTests.swift
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// | ||
// VersionSeedTests.swift | ||
// | ||
// | ||
// Created by Kyle on 2024/1/5. | ||
// | ||
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@testable import OpenSwiftUI | ||
import Testing | ||
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struct VersionSeedTests { | ||
@Test(arguments: [ | ||
(0, ""), | ||
(UInt32.max, ""), | ||
(2, "2"), | ||
]) | ||
func description(value: UInt32, expectedDescription: String) { | ||
let seed = VersionSeed(value: value) | ||
#expect(seed.description == expectedDescription) | ||
} | ||
} |