naiveproxy/net/http2/hpack/decoder/hpack_block_decoder.h
2018-02-02 05:49:39 -05:00

65 lines
2.2 KiB
C++

// 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.
#ifndef NET_HTTP2_HPACK_DECODER_HPACK_BLOCK_DECODER_H_
#define NET_HTTP2_HPACK_DECODER_HPACK_BLOCK_DECODER_H_
// 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 "base/logging.h"
#include "base/macros.h"
#include "net/http2/decoder/decode_buffer.h"
#include "net/http2/decoder/decode_status.h"
#include "net/http2/hpack/decoder/hpack_entry_decoder.h"
#include "net/http2/hpack/decoder/hpack_entry_decoder_listener.h"
#include "net/http2/platform/api/http2_export.h"
#include "net/http2/platform/api/http2_string.h"
namespace net {
class HTTP2_EXPORT_PRIVATE HpackBlockDecoder {
public:
explicit HpackBlockDecoder(HpackEntryDecoderListener* listener)
: listener_(listener) {
DCHECK_NE(listener_, nullptr);
}
~HpackBlockDecoder() {}
// 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() {
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_; }
Http2String DebugString() const;
private:
HpackEntryDecoder entry_decoder_;
HpackEntryDecoderListener* const listener_;
bool before_entry_ = true;
DISALLOW_COPY_AND_ASSIGN(HpackBlockDecoder);
};
HTTP2_EXPORT_PRIVATE std::ostream& operator<<(std::ostream& out,
const HpackBlockDecoder& v);
} // namespace net
#endif // NET_HTTP2_HPACK_DECODER_HPACK_BLOCK_DECODER_H_