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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/. */

#include "StringBlobImpl.h"
#include "nsStringStream.h"

namespace mozilla {
namespace dom {

NS_IMPL_ISUPPORTS_INHERITED(StringBlobImpl, BlobImpl, nsIMemoryReporter)

/* static */ already_AddRefed<StringBlobImpl> StringBlobImpl::Create(
    const nsACString& aData, const nsAString& aContentType) {
  RefPtr<StringBlobImpl> blobImpl = new StringBlobImpl(aData, aContentType);
  RegisterWeakMemoryReporter(blobImpl);
  return blobImpl.forget();
}

StringBlobImpl::StringBlobImpl(const nsACString& aData,
                               const nsAString& aContentType)
    : BaseBlobImpl(aContentType, aData.Length()), mData(aData) {}

StringBlobImpl::~StringBlobImpl() { UnregisterWeakMemoryReporter(this); }

already_AddRefed<BlobImpl> StringBlobImpl::CreateSlice(
    uint64_t aStart, uint64_t aLength, const nsAString& aContentType,
    ErrorResult& aRv) {
  RefPtr<BlobImpl> impl =
      new StringBlobImpl(Substring(mData, aStart, aLength), aContentType);
  return impl.forget();
}

void StringBlobImpl::CreateInputStream(nsIInputStream** aStream,
                                       ErrorResult& aRv) {
  aRv = NS_NewCStringInputStream(aStream, mData);
}

NS_IMETHODIMP
StringBlobImpl::CollectReports(nsIHandleReportCallback* aHandleReport,
                               nsISupports* aData, bool aAnonymize) {
  MOZ_COLLECT_REPORT("explicit/dom/memory-file-data/string", KIND_HEAP,
                     UNITS_BYTES,
                     mData.SizeOfExcludingThisIfUnshared(MallocSizeOf),
                     "Memory used to back a File/Blob based on a string.");
  return NS_OK;
}

}  // namespace dom
}  // namespace mozilla