// Copyright (c) 2016 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.

// SpdyNoOpVisitor implements several of the visitor and handler interfaces
// to make it easier to write tests that need to provide instances. Other
// interfaces can be added as needed.

#ifndef QUICHE_SPDY_CORE_SPDY_NO_OP_VISITOR_H_
#define QUICHE_SPDY_CORE_SPDY_NO_OP_VISITOR_H_

#include <cstddef>
#include <cstdint>
#include <string>

#include "absl/strings/string_view.h"
#include "quiche/common/platform/api/quiche_export.h"
#include "quiche/spdy/core/http2_frame_decoder_adapter.h"
#include "quiche/spdy/core/spdy_alt_svc_wire_format.h"
#include "quiche/spdy/core/spdy_headers_handler_interface.h"
#include "quiche/spdy/core/spdy_protocol.h"

namespace spdy {

class QUICHE_EXPORT SpdyNoOpVisitor : public SpdyFramerVisitorInterface,
                                      public SpdyFramerDebugVisitorInterface,
                                      public SpdyHeadersHandlerInterface {
 public:
  SpdyNoOpVisitor();
  ~SpdyNoOpVisitor() override;

  // SpdyFramerVisitorInterface methods:
  void OnError(http2::Http2DecoderAdapter::SpdyFramerError /*error*/,
               std::string /*detailed_error*/) override {}
  SpdyHeadersHandlerInterface* OnHeaderFrameStart(
      SpdyStreamId stream_id) override;
  void OnHeaderFrameEnd(SpdyStreamId /*stream_id*/) override {}
  void OnDataFrameHeader(SpdyStreamId /*stream_id*/, size_t /*length*/,
                         bool /*fin*/) override {}
  void OnStreamFrameData(SpdyStreamId /*stream_id*/, const char* /*data*/,
                         size_t /*len*/) override {}
  void OnStreamEnd(SpdyStreamId /*stream_id*/) override {}
  void OnStreamPadding(SpdyStreamId /*stream_id*/, size_t /*len*/) override {}
  void OnRstStream(SpdyStreamId /*stream_id*/,
                   SpdyErrorCode /*error_code*/) override {}
  void OnSetting(SpdySettingsId /*id*/, uint32_t /*value*/) override {}
  void OnPing(SpdyPingId /*unique_id*/, bool /*is_ack*/) override {}
  void OnSettingsEnd() override {}
  void OnSettingsAck() override {}
  void OnGoAway(SpdyStreamId /*last_accepted_stream_id*/,
                SpdyErrorCode /*error_code*/) override {}
  void OnHeaders(SpdyStreamId /*stream_id*/, size_t /*payload_length*/,
                 bool /*has_priority*/, int /*weight*/,
                 SpdyStreamId /*parent_stream_id*/, bool /*exclusive*/,
                 bool /*fin*/, bool /*end*/) override {}
  void OnWindowUpdate(SpdyStreamId /*stream_id*/,
                      int /*delta_window_size*/) override {}
  void OnPushPromise(SpdyStreamId /*stream_id*/,
                     SpdyStreamId /*promised_stream_id*/,
                     bool /*end*/) override {}
  void OnContinuation(SpdyStreamId /*stream_id*/, size_t /*payload_size*/,
                      bool /*end*/) override {}
  void OnAltSvc(SpdyStreamId /*stream_id*/, absl::string_view /*origin*/,
                const SpdyAltSvcWireFormat::AlternativeServiceVector&
                /*altsvc_vector*/) override {}
  void OnPriority(SpdyStreamId /*stream_id*/, SpdyStreamId /*parent_stream_id*/,
                  int /*weight*/, bool /*exclusive*/) override {}
  void OnPriorityUpdate(SpdyStreamId /*prioritized_stream_id*/,
                        absl::string_view /*priority_field_value*/) override {}
  bool OnUnknownFrame(SpdyStreamId /*stream_id*/,
                      uint8_t /*frame_type*/) override;
  void OnUnknownFrameStart(SpdyStreamId /*stream_id*/, size_t /*length*/,
                           uint8_t /*type*/, uint8_t /*flags*/) override {}
  void OnUnknownFramePayload(SpdyStreamId /*stream_id*/,
                             absl::string_view /*payload*/) override {}

  // SpdyFramerDebugVisitorInterface methods:
  void OnSendCompressedFrame(SpdyStreamId /*stream_id*/, SpdyFrameType /*type*/,
                             size_t /*payload_len*/,
                             size_t /*frame_len*/) override {}
  void OnReceiveCompressedFrame(SpdyStreamId /*stream_id*/,
                                SpdyFrameType /*type*/,
                                size_t /*frame_len*/) override {}

  // SpdyHeadersHandlerInterface methods:
  void OnHeaderBlockStart() override {}
  void OnHeader(absl::string_view /*key*/,
                absl::string_view /*value*/) override {}
  void OnHeaderBlockEnd(size_t /* uncompressed_header_bytes */,
                        size_t /* compressed_header_bytes */) override {}
};

}  // namespace spdy

#endif  // QUICHE_SPDY_CORE_SPDY_NO_OP_VISITOR_H_