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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/. */
#include "CapsuleDecoder.h"
#include "ErrorList.h"
#include "mozilla/net/NeqoHttp3Conn.h"
namespace mozilla::net {
CapsuleDecoder::CapsuleDecoder(const uint8_t* aData, size_t aLength) {
NeqoDecoder::Init(aData, aLength, getter_AddRefs(mDecoder));
}
CapsuleDecoder::~CapsuleDecoder() = default;
template <>
Maybe<uint32_t> CapsuleDecoder::DecodeUint<uint32_t>() {
uint32_t res = 0;
if (mDecoder->DecodeUint32(&res)) {
return Some(res);
}
return Nothing();
}
size_t CapsuleDecoder::BytesRemaining() { return mDecoder->Remaining(); }
size_t CapsuleDecoder::CurrentPos() { return mDecoder->Offset(); }
Maybe<uint64_t> CapsuleDecoder::DecodeVarint() {
uint64_t v = 0;
if (mDecoder->DecodeVarint(&v)) {
return Some(v);
}
return Nothing();
}
// Decodes arbitrary data: returns a span over the next n bytes, if available.
Maybe<mozilla::Span<const uint8_t>> CapsuleDecoder::Decode(size_t n) {
const uint8_t* buffer = nullptr;
uint32_t length = 0;
if (mDecoder->Decode(n, &buffer, &length)) {
return Some(mozilla::Span<const uint8_t>(buffer, length));
}
return Nothing();
}
mozilla::Span<const uint8_t> CapsuleDecoder::GetRemaining() {
const uint8_t* buffer = nullptr;
uint32_t length = 0;
mDecoder->DecodeRemainder(&buffer, &length);
return mozilla::Span<const uint8_t>(buffer, length);
}
} // namespace mozilla::net
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