mirror of
https://github.com/vector-im/element-ios.git
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b5cf3ae953
Co-authored-by: manuroe <manuroe@users.noreply.github.com>
46 lines
1.6 KiB
Swift
46 lines
1.6 KiB
Swift
//
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// Copyright 2021 New Vector Ltd
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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//
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import Foundation
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/**
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A property wrapped used to inject from the dependency
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container on the instance to instance properties.
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E.g. ```@Inject var someClass: SomeClass```
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*/
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@propertyWrapper struct Inject<Value> {
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static subscript<T: Injectable>(
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_enclosingInstance instance: T,
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wrapped wrappedKeyPath: ReferenceWritableKeyPath<T, Value>,
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storage storageKeyPath: ReferenceWritableKeyPath<T, Self>
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) -> Value {
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get {
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// Resolve dependencies from enclosing instance's `dependencies` property
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let v: Value = instance.dependencies.resolve()
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return v
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}
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set {
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fatalError("Only subscript get is supported for injection")
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}
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}
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@available(*, unavailable, message: "This property wrapper can only be applied to classes")
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var wrappedValue: Value {
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get { fatalError("wrappedValue get no used") }
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set { fatalError("wrappedValue set not used. \(newValue)" ) }
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}
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}
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