parser/html/nsHtml5StreamListener.cpp

   1 /* This Source Code Form is subject to the terms of the Mozilla Public
   2  * License, v. 2.0. If a copy of the MPL was not distributed with this
   3  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
   4
   5 #include "nsHtml5StreamListener.h"
   6
   7 NS_IMPL_ADDREF(nsHtml5StreamListener)
   8 NS_IMPL_RELEASE(nsHtml5StreamListener)
   9
  10 NS_INTERFACE_MAP_BEGIN(nsHtml5StreamListener)
  11   NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIRequestObserver)
  12   NS_INTERFACE_MAP_ENTRY(nsIRequestObserver)
  13   NS_INTERFACE_MAP_ENTRY(nsIStreamListener)
  14   NS_INTERFACE_MAP_ENTRY(nsIThreadRetargetableStreamListener)
  15 NS_INTERFACE_MAP_END
  16
  17 nsHtml5StreamListener::nsHtml5StreamListener(nsHtml5StreamParser* aDelegate)
  18     : mDelegate(aDelegate) {}
  19
  20 nsHtml5StreamListener::~nsHtml5StreamListener() {}
  21
  22 void nsHtml5StreamListener::DropDelegate() {
  23   MOZ_ASSERT(NS_IsMainThread(),
  24              "Must not call DropDelegate from non-main threads.");
  25   mDelegate = nullptr;
  26 }
  27
  28 NS_IMETHODIMP
  29 nsHtml5StreamListener::CheckListenerChain() {
  30   if (MOZ_UNLIKELY(!mDelegate)) {
  31     return NS_ERROR_NOT_AVAILABLE;
  32   }
  33   return mDelegate->CheckListenerChain();
  34 }
  35
  36 NS_IMETHODIMP
  37 nsHtml5StreamListener::OnStartRequest(nsIRequest* aRequest) {
  38   if (MOZ_UNLIKELY(!mDelegate)) {
  39     return NS_ERROR_NOT_AVAILABLE;
  40   }
  41   return mDelegate->OnStartRequest(aRequest);
  42 }
  43
  44 NS_IMETHODIMP
  45 nsHtml5StreamListener::OnStopRequest(nsIRequest* aRequest, nsresult aStatus) {
  46   if (MOZ_UNLIKELY(!mDelegate)) {
  47     return NS_ERROR_NOT_AVAILABLE;
  48   }
  49   return mDelegate->OnStopRequest(aRequest, aStatus);
  50 }
  51
  52 NS_IMETHODIMP
  53 nsHtml5StreamListener::OnDataAvailable(nsIRequest* aRequest,
  54                                        nsIInputStream* aInStream,
  55                                        uint64_t aSourceOffset,
  56                                        uint32_t aLength) {
  57   if (MOZ_UNLIKELY(!mDelegate)) {
  58     return NS_ERROR_NOT_AVAILABLE;
  59   }
  60   return mDelegate->OnDataAvailable(aRequest, aInStream, aSourceOffset,
  61                                     aLength);
  62 }