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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 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_StreamBufferSource_h
#define mozilla_StreamBufferSource_h
#include <cstddef>
#include "ErrorList.h"
#include "mozilla/MemoryReporting.h"
#include "mozilla/Span.h"
#include "nsISupportsImpl.h"
#include "nsString.h"
namespace mozilla {
class StreamBufferSource {
public:
NS_INLINE_DECL_THREADSAFE_REFCOUNTING(StreamBufferSource)
virtual Span<const char> Data() = 0;
virtual nsresult GetData(nsACString& aString) {
Span<const char> data = Data();
if (!aString.Assign(data.Elements(), data.Length(), fallible)) {
return NS_ERROR_OUT_OF_MEMORY;
}
return NS_OK;
}
virtual bool Owning() = 0;
virtual size_t SizeOfExcludingThisIfUnshared(MallocSizeOf aMallocSizeOf) {
return SizeOfExcludingThisEvenIfShared(aMallocSizeOf);
}
size_t SizeOfIncludingThisIfUnshared(MallocSizeOf aMallocSizeOf) {
if (mRefCnt > 1) {
return 0;
}
size_t n = aMallocSizeOf(this);
n += SizeOfExcludingThisIfUnshared(aMallocSizeOf);
return n;
}
virtual size_t SizeOfExcludingThisEvenIfShared(
MallocSizeOf aMallocSizeOf) = 0;
size_t SizeOfIncludingThisEvenIfShared(MallocSizeOf aMallocSizeOf) {
size_t n = aMallocSizeOf(this);
n += SizeOfExcludingThisEvenIfShared(aMallocSizeOf);
return n;
}
protected:
virtual ~StreamBufferSource() = default;
};
} // namespace mozilla
#endif // mozilla_StreamBufferSource_h
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