Split out into separate files

SecretKit/Common/Erasers/AnySecret.swift

@@ -0,0 +1,48 @@
+import Foundation
+
+public struct AnySecret: Secret {
+
+    let base: Any
+    fileprivate let hashable: AnyHashable
+    fileprivate let _id: () -> AnyHashable
+    fileprivate let _name: () -> String
+    fileprivate let _publicKey: () -> Data
+
+    public init<T>(_ secret: T) where T: Secret {
+        if let secret = secret as? AnySecret {
+            base = secret.base
+            hashable = secret.hashable
+            _id = secret._id
+            _name = secret._name
+            _publicKey = secret._publicKey
+        } else {
+            base = secret as Any
+            self.hashable = secret
+            _id = { secret.id as AnyHashable }
+            _name = { secret.name }
+            _publicKey = { secret.publicKey }
+        }
+    }
+
+    public var id: AnyHashable {
+        return _id()
+    }
+
+    public var name: String {
+        return _name()
+    }
+
+    public var publicKey: Data {
+        return _publicKey()
+    }
+
+    public static func == (lhs: AnySecret, rhs: AnySecret) -> Bool {
+        lhs.hashable == rhs.hashable
+    }
+
+    public func hash(into hasher: inout Hasher) {
+        hashable.hash(into: &hasher)
+    }
+
+}
+

SecretKit/Common/Erasers/AnySecretStore.swift

@@ -0,0 +1,64 @@
+import Foundation
+
+public class AnySecretStore: SecretStore {
+
+    let base: Any
+    fileprivate let _isAvailable: () -> Bool
+    fileprivate let _id: () -> UUID
+    fileprivate let _name: () -> String
+    fileprivate let _secrets: () -> [AnySecret]
+    fileprivate let _sign: (Data, AnySecret) throws -> Data
+
+    public init<SecretStoreType>(_ secretStore: SecretStoreType) where SecretStoreType: SecretStore {
+        base = secretStore
+        _isAvailable = { secretStore.isAvailable }
+        _name = { secretStore.name }
+        _id = { secretStore.id }
+        _secrets = { secretStore.secrets.map { AnySecret($0) } }
+        _sign = { try secretStore.sign(data: $0, with: $1 as! SecretStoreType.SecretType) }
+    }
+
+    public var isAvailable: Bool {
+        return _isAvailable()
+    }
+
+    public var id: UUID {
+        return _id()
+    }
+
+    public var name: String {
+        return _name()
+    }
+
+    public var secrets: [AnySecret] {
+        return _secrets()
+    }
+
+    public func sign(data: Data, with secret: AnySecret) throws -> Data {
+        try _sign(data, secret)
+    }
+
+}
+
+public class AnySecretStoreModifiable: AnySecretStore, SecretStoreModifiable {
+
+    fileprivate let _create: (String, Bool) throws -> Void
+    fileprivate let _delete: (AnySecret) throws -> Void
+
+    public init<SecretStoreType>(modifiable secretStore: SecretStoreType) where SecretStoreType: SecretStoreModifiable {
+        _create = { try secretStore.create(name: $0, requiresAuthentication: $1) }
+        _delete = { try secretStore.delete(secret: $0.base as! SecretStoreType.SecretType) }
+        super.init(secretStore)
+    }
+
+    public func create(name: String, requiresAuthentication: Bool) throws {
+        try _create(name, requiresAuthentication)
+    }
+
+    public func delete(secret: AnySecret) throws {
+        try _delete(secret)
+    }
+
+}
+
+