THRIFT-3773: Swift 3 changes, Squashed (#1084)
Client: swift
diff --git a/lib/swift/Sources/TMemoryBufferTransport.swift b/lib/swift/Sources/TMemoryBufferTransport.swift
new file mode 100644
index 0000000..bd58b6e
--- /dev/null
+++ b/lib/swift/Sources/TMemoryBufferTransport.swift
@@ -0,0 +1,74 @@
+/*
+ * Licensed to the Apache Software Foundation (ASF) under one
+ * or more contributor license agreements. See the NOTICE file
+ * distributed with this work for additional information
+ * regarding copyright ownership. The ASF licenses this file
+ * to you under the Apache License, Version 2.0 (the
+ * "License"); you may not use this file except in compliance
+ * with the License. You may obtain a copy of the License at
+ *
+ * http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing,
+ * software distributed under the License is distributed on an
+ * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
+ * KIND, either express or implied. See the License for the
+ * specific language governing permissions and limitations
+ * under the License.
+ */
+
+import Foundation
+
+public class TMemoryBufferTransport : TTransport {
+ public private(set) var readBuffer = Data()
+ public private(set) var writeBuffer = Data()
+
+ public private(set) var position = 0
+
+ public var bytesRemainingInBuffer: Int {
+ return readBuffer.count - position
+ }
+
+ public func consumeBuffer(size: Int) {
+ position += size
+ }
+ public func clear() {
+ readBuffer = Data()
+ writeBuffer = Data()
+ }
+
+
+ private var flushHandler: ((TMemoryBufferTransport, Data) -> ())?
+
+ public init(flushHandler: ((TMemoryBufferTransport, Data) -> ())? = nil) {
+ self.flushHandler = flushHandler
+ }
+
+ public convenience init(readBuffer: Data, flushHandler: ((TMemoryBufferTransport, Data) -> ())? = nil) {
+ self.init()
+ self.readBuffer = readBuffer
+ }
+
+ public func reset(readBuffer: Data = Data(), writeBuffer: Data = Data()) {
+ self.readBuffer = readBuffer
+ self.writeBuffer = writeBuffer
+ }
+
+ public func read(size: Int) throws -> Data {
+ let amountToRead = min(bytesRemainingInBuffer, size)
+ if amountToRead > 0 {
+ let ret = readBuffer.subdata(in: Range(uncheckedBounds: (lower: position, upper: position + amountToRead)))
+ position += ret.count
+ return ret
+ }
+ return Data()
+ }
+
+ public func write(data: Data) throws {
+ writeBuffer.append(data)
+ }
+
+ public func flush() throws {
+ flushHandler?(self, writeBuffer)
+ }
+}