1 /*
2  *
3  * Copyright 2015 gRPC authors.
4  *
5  * Licensed under the Apache License, Version 2.0 (the "License");
6  * you may not use this file except in compliance with the License.
7  * You may obtain a copy of the License at
8  *
9  *     http://www.apache.org/licenses/LICENSE-2.0
10  *
11  * Unless required by applicable law or agreed to in writing, software
12  * distributed under the License is distributed on an "AS IS" BASIS,
13  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14  * See the License for the specific language governing permissions and
15  * limitations under the License.
16  *
17  */
18 
19 #import "GRXWriter.h"
20 
21 /**
22  * A "proxy" class that simply forwards values, completion, and errors from its input writer to its
23  * writeable.
24  * It is useful as a superclass for pipes that act as a transformation of their
25  * input writer, and for classes that represent objects with input and
26  * output sequences of values, like an RPC.
27  *
28  * Thread-safety: the methods of this class are thread safe.
29  */
30 @interface GRXForwardingWriter : GRXWriter
31 - (instancetype)initWithWriter:(GRXWriter *)writer NS_DESIGNATED_INITIALIZER;
32 @end
33