Project import generated by Copybara.
PiperOrigin-RevId: 237361882
Change-Id: I109a68f44db867b20f8c6a7732b0ce657133e52a
diff --git a/quic/core/qpack/qpack_decoder_stream_receiver.h b/quic/core/qpack/qpack_decoder_stream_receiver.h
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+// Copyright (c) 2018 The Chromium Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style license that can be
+// found in the LICENSE file.
+
+#ifndef QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_
+#define QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_
+
+#include <cstdint>
+
+#include "net/third_party/quiche/src/quic/core/qpack/qpack_instruction_decoder.h"
+#include "net/third_party/quiche/src/quic/core/quic_types.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_export.h"
+#include "net/third_party/quiche/src/quic/platform/api/quic_string_piece.h"
+
+namespace quic {
+
+// This class decodes data received on the decoder stream,
+// and passes it along to its Delegate.
+class QUIC_EXPORT_PRIVATE QpackDecoderStreamReceiver
+ : public QpackInstructionDecoder::Delegate {
+ public:
+ // An interface for handling instructions decoded from the decoder stream, see
+ // https://quicwg.org/base-drafts/draft-ietf-quic-qpack.html#rfc.section.5.3
+ class Delegate {
+ public:
+ virtual ~Delegate() = default;
+
+ // 5.3.1 Insert Count Increment
+ virtual void OnInsertCountIncrement(uint64_t increment) = 0;
+ // 5.3.2 Header Acknowledgement
+ virtual void OnHeaderAcknowledgement(QuicStreamId stream_id) = 0;
+ // 5.3.3 Stream Cancellation
+ virtual void OnStreamCancellation(QuicStreamId stream_id) = 0;
+ // Decoding error
+ virtual void OnErrorDetected(QuicStringPiece error_message) = 0;
+ };
+
+ explicit QpackDecoderStreamReceiver(Delegate* delegate);
+ QpackDecoderStreamReceiver() = delete;
+ QpackDecoderStreamReceiver(const QpackDecoderStreamReceiver&) = delete;
+ QpackDecoderStreamReceiver& operator=(const QpackDecoderStreamReceiver&) =
+ delete;
+
+ // Decode data and call appropriate Delegate method after each decoded
+ // instruction. Once an error occurs, Delegate::OnErrorDetected() is called,
+ // and all further data is ignored.
+ void Decode(QuicStringPiece data);
+
+ // QpackInstructionDecoder::Delegate implementation.
+ bool OnInstructionDecoded(const QpackInstruction* instruction) override;
+ void OnError(QuicStringPiece error_message) override;
+
+ private:
+ QpackInstructionDecoder instruction_decoder_;
+ Delegate* const delegate_;
+
+ // True if a decoding error has been detected.
+ bool error_detected_;
+};
+
+} // namespace quic
+
+#endif // QUICHE_QUIC_CORE_QPACK_QPACK_DECODER_STREAM_RECEIVER_H_
