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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et tw=80 : */
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
#ifndef mozilla_net_capsule_decoder_h
#define mozilla_net_capsule_decoder_h
#include "mozilla/RefPtr.h"
#include "mozilla/Maybe.h"
#include "mozilla/Span.h"
namespace mozilla::net {
class NeqoDecoder;
// CapsuleDecoder provides methods to decode capsule data from a given buffer.
// It does not own the underlying data, so the caller must ensure that the
// buffer remains valid for the lifetime of the CapsuleDecoder instance.
class MOZ_STACK_CLASS CapsuleDecoder final {
public:
explicit CapsuleDecoder(const uint8_t* aData, size_t aLength);
~CapsuleDecoder();
// Return Nothing() when there is not enough data to decode.
template <typename T>
Maybe<T> DecodeUint();
Maybe<uint64_t> DecodeVarint();
Maybe<mozilla::Span<const uint8_t>> Decode(size_t n);
mozilla::Span<const uint8_t> GetRemaining();
size_t BytesRemaining();
size_t CurrentPos();
private:
RefPtr<NeqoDecoder> mDecoder;
};
} // namespace mozilla::net
#endif
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