blob: 3d956b1656dcb9a9f12c4f1e0ed05e65eb7028b7 [file] [log] [blame]
// Copyright 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.
// HpackBlockDecoder decodes an entire HPACK block (or the available portion
// thereof in the DecodeBuffer) into entries, but doesn't include HPACK static
// or dynamic table support, so table indices remain indices at this level.
// Reports the entries to an HpackEntryDecoderListener.
#include <string>
#include "http2/decoder/decode_buffer.h"
#include "http2/decoder/decode_status.h"
#include "http2/hpack/decoder/hpack_decoding_error.h"
#include "http2/hpack/decoder/hpack_entry_decoder.h"
#include "http2/hpack/decoder/hpack_entry_decoder_listener.h"
#include "http2/platform/api/http2_logging.h"
#include "common/platform/api/quiche_export.h"
namespace http2 {
class QUICHE_EXPORT_PRIVATE HpackBlockDecoder {
explicit HpackBlockDecoder(HpackEntryDecoderListener* listener)
: listener_(listener) {
QUICHE_DCHECK_NE(listener_, nullptr);
~HpackBlockDecoder() {}
HpackBlockDecoder(const HpackBlockDecoder&) = delete;
HpackBlockDecoder& operator=(const HpackBlockDecoder&) = delete;
// Prepares the decoder to start decoding a new HPACK block. Expected
// to be called from an implementation of Http2FrameDecoderListener's
// OnHeadersStart or OnPushPromiseStart methods.
void Reset() {
HTTP2_DVLOG(2) << "HpackBlockDecoder::Reset";
before_entry_ = true;
// Decode the fragment of the HPACK block contained in the decode buffer.
// Expected to be called from an implementation of Http2FrameDecoderListener's
// OnHpackFragment method.
DecodeStatus Decode(DecodeBuffer* db);
// Is the decoding process between entries (i.e. would the next byte be the
// first byte of a new HPACK entry)?
bool before_entry() const { return before_entry_; }
// Return error code after decoding error occurred in HpackEntryDecoder.
HpackDecodingError error() const { return entry_decoder_.error(); }
std::string DebugString() const;
HpackEntryDecoder entry_decoder_;
HpackEntryDecoderListener* const listener_;
bool before_entry_ = true;
QUICHE_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& out,
const HpackBlockDecoder& v);
} // namespace http2