xpcom/io/StreamBufferSinkImpl.h

   1 /* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* vim: set ts=8 sts=2 et sw=2 tw=80: */
   3 /* This Source Code Form is subject to the terms of the Mozilla Public
   4  * License, v. 2.0. If a copy of the MPL was not distributed with this file,
   5  * You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #ifndef mozilla_StreamBufferSinkImpl_h
   8 #define mozilla_StreamBufferSinkImpl_h
   9
  10 #include "mozilla/Buffer.h"
  11 #include "mozilla/StreamBufferSink.h"
  12 #include "mozilla/UniquePtr.h"
  13
  14 namespace mozilla {
  15
  16 class BufferSink final : public StreamBufferSink {
  17  public:
  18   explicit BufferSink(Buffer<char>&& aBuffer) : mBuffer(std::move(aBuffer)) {}
  19
  20   explicit BufferSink(size_t aLength) : mBuffer(aLength) {}
  21
  22   static UniquePtr<BufferSink> Alloc(size_t aLength) {
  23     auto maybeBuffer = Buffer<char>::Alloc(aLength);
  24     if (!maybeBuffer) {
  25       return nullptr;
  26     }
  27
  28     return MakeUnique<BufferSink>(maybeBuffer.extract());
  29   }
  30
  31   mozilla::Span<char> Data() override { return mBuffer.AsWritableSpan(); }
  32
  33  private:
  34   Buffer<char> mBuffer;
  35 };
  36
  37 class nsBorrowedSink final : public StreamBufferSink {
  38  public:
  39   explicit nsBorrowedSink(mozilla::Span<char> aBuffer) : mBuffer(aBuffer) {}
  40
  41   mozilla::Span<char> Data() override { return mBuffer; }
  42
  43  private:
  44   mozilla::Span<char> mBuffer;
  45 };
  46
  47 }  // namespace mozilla
  48
  49 #endif  // mozilla_StreamBufferSinkImpl_h