1 // Copyright 2016 The Chromium Authors. All rights reserved.
2 // Use of this source code is governed by a BSD-style license that can be
3 // found in the LICENSE file.
4 
5 #ifndef QUICHE_HTTP2_DECODER_PAYLOAD_DECODERS_PRIORITY_PAYLOAD_DECODER_H_
6 #define QUICHE_HTTP2_DECODER_PAYLOAD_DECODERS_PRIORITY_PAYLOAD_DECODER_H_
7 
8 // Decodes the payload of a PRIORITY frame.
9 
10 #include "quiche/http2/decoder/decode_buffer.h"
11 #include "quiche/http2/decoder/decode_status.h"
12 #include "quiche/http2/decoder/frame_decoder_state.h"
13 #include "quiche/http2/http2_structures.h"
14 #include "quiche/common/platform/api/quiche_export.h"
15 
16 namespace http2 {
17 namespace test {
18 class PriorityPayloadDecoderPeer;
19 }  // namespace test
20 
21 class QUICHE_EXPORT PriorityPayloadDecoder {
22  public:
23   // Starts the decoding of a PRIORITY frame's payload, and completes it if
24   // the entire payload is in the provided decode buffer.
25   DecodeStatus StartDecodingPayload(FrameDecoderState* state, DecodeBuffer* db);
26 
27   // Resumes decoding a PRIORITY frame that has been split across decode
28   // buffers.
29   DecodeStatus ResumeDecodingPayload(FrameDecoderState* state,
30                                      DecodeBuffer* db);
31 
32  private:
33   friend class test::PriorityPayloadDecoderPeer;
34 
35   // Determines whether to report the PRIORITY to the listener, wait for more
36   // input, or to report a Frame Size Error.
37   DecodeStatus HandleStatus(FrameDecoderState* state, DecodeStatus status);
38 
39   Http2PriorityFields priority_fields_;
40 };
41 
42 }  // namespace http2
43 
44 #endif  // QUICHE_HTTP2_DECODER_PAYLOAD_DECODERS_PRIORITY_PAYLOAD_DECODER_H_
45