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submodules/Postbox/Sources/Utils/Decoder/AdaptedPostboxDecoder.swift

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+import Foundation
+
+final public class AdaptedPostboxDecoder {
+    func decode<T>(_ type: T.Type, from data: Data) throws -> T where T : Decodable {
+        let decoder = _AdaptedPostboxDecoder(data: data)
+        return try T(from: decoder)
+    }
+}
+
+final class _AdaptedPostboxDecoder {
+    var codingPath: [CodingKey] = []
+    
+    var userInfo: [CodingUserInfoKey : Any] = [:]
+    
+    var container: AdaptedPostboxDecodingContainer?
+    fileprivate var data: Data
+    
+    init(data: Data) {
+        self.data = data
+    }
+}
+
+extension _AdaptedPostboxDecoder: Decoder {
+    fileprivate func assertCanCreateContainer() {
+        precondition(self.container == nil)
+    }
+        
+    func container<Key>(keyedBy type: Key.Type) -> KeyedDecodingContainer<Key> where Key : CodingKey {
+        assertCanCreateContainer()
+
+        let container = KeyedContainer<Key>(data: self.data, codingPath: self.codingPath, userInfo: self.userInfo)
+        self.container = container
+
+        return KeyedDecodingContainer(container)
+    }
+
+    func unkeyedContainer() -> UnkeyedDecodingContainer {
+        preconditionFailure()
+    }
+    
+    func singleValueContainer() -> SingleValueDecodingContainer {
+        preconditionFailure()
+    }
+}
+
+protocol AdaptedPostboxDecodingContainer: AnyObject {
+}