dom/simpledb/SDBResults.cpp

   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
   5  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   6
   7 #include "SDBResults.h"
   8
   9 #include <cstdint>
  10 #include <cstring>
  11 #include <new>
  12 #include <utility>
  13 #include "ErrorList.h"
  14 #include "js/RootingAPI.h"
  15 #include "js/TypeDecls.h"
  16 #include "mozilla/Assertions.h"
  17 #include "mozilla/MacroForEach.h"
  18 #include "mozilla/dom/TypedArray.h"
  19 #include "nsDebug.h"
  20 #include "nsError.h"
  21 #include "nsTArray.h"
  22 #include "nscore.h"
  23
  24 namespace mozilla::dom {
  25
  26 SDBResult::SDBResult(const nsACString& aData) : mData(aData) {}
  27
  28 NS_IMPL_ISUPPORTS(SDBResult, nsISDBResult)
  29
  30 NS_IMETHODIMP
  31 SDBResult::GetAsArray(nsTArray<uint8_t>& aData) {
  32   uint32_t length = mData.Length();
  33   aData.SetLength(length);
  34
  35   if (length != 0) {
  36     memcpy(aData.Elements(), mData.BeginReading(), length * sizeof(uint8_t));
  37   }
  38
  39   return NS_OK;
  40 }
  41
  42 NS_IMETHODIMP
  43 SDBResult::GetAsArrayBuffer(JSContext* aCx,
  44                             JS::MutableHandle<JS::Value> _retval) {
  45   ErrorResult rv;
  46   JS::Rooted<JSObject*> arrayBuffer(aCx, ArrayBuffer::Create(aCx, mData, rv));
  47   ENSURE_SUCCESS(rv, rv.StealNSResult());
  48
  49   _retval.setObject(*arrayBuffer);
  50   return NS_OK;
  51 }
  52
  53 }  // namespace mozilla::dom