1 files changed, 0 insertions, 57 deletions
diff --git a/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/CallbackInterfaceRuntime.swift b/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/CallbackInterfaceRuntime.swift
index 9ae62d1667..5863c2ad41 100644
--- a/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/CallbackInterfaceRuntime.swift
+++ b/third_party/rust/uniffi_bindgen/src/bindings/swift/templates/CallbackInterfaceRuntime.swift
@@ -1,60 +1,3 @@
-fileprivate extension NSLock {
-    func withLock<T>(f: () throws -> T) rethrows -> T {
-        self.lock()
-        defer { self.unlock() }
-        return try f()
-    }
-}
-
-fileprivate typealias UniFFICallbackHandle = UInt64
-fileprivate class UniFFICallbackHandleMap<T> {
-    private var leftMap: [UniFFICallbackHandle: T] = [:]
-    private var counter: [UniFFICallbackHandle: UInt64] = [:]
-    private var rightMap: [ObjectIdentifier: UniFFICallbackHandle] = [:]
-
-    private let lock = NSLock()
-    private var currentHandle: UniFFICallbackHandle = 0
-    private let stride: UniFFICallbackHandle = 1
-
-    func insert(obj: T) -> UniFFICallbackHandle {
-        lock.withLock {
-            let id = ObjectIdentifier(obj as AnyObject)
-            let handle = rightMap[id] ?? {
-                currentHandle += stride
-                let handle = currentHandle
-                leftMap[handle] = obj
-                rightMap[id] = handle
-                return handle
-            }()
-            counter[handle] = (counter[handle] ?? 0) + 1
-            return handle
-        }
-    }
-
-    func get(handle: UniFFICallbackHandle) -> T? {
-        lock.withLock {
-            leftMap[handle]
-        }
-    }
-
-    func delete(handle: UniFFICallbackHandle) {
-        remove(handle: handle)
-    }
-
-    @discardableResult
-    func remove(handle: UniFFICallbackHandle) -> T? {
-        lock.withLock {
-            defer { counter[handle] = (counter[handle] ?? 1) - 1 }
-            guard counter[handle] == 1 else { return leftMap[handle] }
-            let obj = leftMap.removeValue(forKey: handle)
-            if let obj = obj {
-                rightMap.removeValue(forKey: ObjectIdentifier(obj as AnyObject))
-            }
-            return obj
-        }
-    }
-}
-
 // Magic number for the Rust proxy to call using the same mechanism as every other method,
 // to free the callback once it's dropped by Rust.
 private let IDX_CALLBACK_FREE: Int32 = 0