parser/html/nsHtml5SpeculativeLoad.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 "nsHtml5SpeculativeLoad.h"
   6 #include "mozilla/Encoding.h"
   7 #include "nsHtml5TreeOpExecutor.h"
   8
   9 using namespace mozilla;
  10
  11 nsHtml5SpeculativeLoad::nsHtml5SpeculativeLoad()
  12     : mOpCode(eSpeculativeLoadUninitialized),
  13       mIsAsync(false),
  14       mIsDefer(false),
  15       mIsLinkPreload(false),
  16       mEncoding(nullptr) {
  17   MOZ_COUNT_CTOR(nsHtml5SpeculativeLoad);
  18   new (&mCharsetOrSrcset) nsString;
  19 }
  20
  21 nsHtml5SpeculativeLoad::~nsHtml5SpeculativeLoad() {
  22   MOZ_COUNT_DTOR(nsHtml5SpeculativeLoad);
  23   NS_ASSERTION(mOpCode != eSpeculativeLoadUninitialized,
  24                "Uninitialized speculative load.");
  25   if (mOpCode != eSpeculativeLoadSetDocumentCharset) {
  26     mCharsetOrSrcset.~nsString();
  27   }
  28 }
  29
  30 void nsHtml5SpeculativeLoad::Perform(nsHtml5TreeOpExecutor* aExecutor) {
  31   switch (mOpCode) {
  32     case eSpeculativeLoadBase:
  33       aExecutor->SetSpeculationBase(mUrlOrSizes);
  34       break;
  35     case eSpeculativeLoadCSP:
  36       aExecutor->AddSpeculationCSP(
  37           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity);
  38       break;
  39     case eSpeculativeLoadMetaReferrer:
  40       aExecutor->UpdateReferrerInfoFromMeta(mReferrerPolicyOrIntegrity);
  41       break;
  42     case eSpeculativeLoadImage:
  43       aExecutor->PreloadImage(
  44           mUrlOrSizes, mCrossOrigin, mMedia, mCharsetOrSrcset,
  45           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  46           mReferrerPolicyOrIntegrity, mIsLinkPreload);
  47       break;
  48     case eSpeculativeLoadOpenPicture:
  49       aExecutor->PreloadOpenPicture();
  50       break;
  51     case eSpeculativeLoadEndPicture:
  52       aExecutor->PreloadEndPicture();
  53       break;
  54     case eSpeculativeLoadPictureSource:
  55       aExecutor->PreloadPictureSource(
  56           mCharsetOrSrcset, mUrlOrSizes,
  57           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  58           mMedia);
  59       break;
  60     case eSpeculativeLoadScript:
  61       aExecutor->PreloadScript(
  62           mUrlOrSizes, mCharsetOrSrcset,
  63           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  64           mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
  65           mScriptReferrerPolicy, false, mIsAsync, mIsDefer, false,
  66           mIsLinkPreload);
  67       break;
  68     case eSpeculativeLoadScriptFromHead:
  69       aExecutor->PreloadScript(
  70           mUrlOrSizes, mCharsetOrSrcset,
  71           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  72           mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
  73           mScriptReferrerPolicy, true, mIsAsync, mIsDefer, false,
  74           mIsLinkPreload);
  75       break;
  76     case eSpeculativeLoadNoModuleScript:
  77       aExecutor->PreloadScript(
  78           mUrlOrSizes, mCharsetOrSrcset,
  79           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  80           mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
  81           mScriptReferrerPolicy, false, mIsAsync, mIsDefer, true,
  82           mIsLinkPreload);
  83       break;
  84     case eSpeculativeLoadNoModuleScriptFromHead:
  85       aExecutor->PreloadScript(
  86           mUrlOrSizes, mCharsetOrSrcset,
  87           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  88           mCrossOrigin, mMedia, mReferrerPolicyOrIntegrity,
  89           mScriptReferrerPolicy, true, mIsAsync, mIsDefer, true,
  90           mIsLinkPreload);
  91       break;
  92     case eSpeculativeLoadStyle:
  93       aExecutor->PreloadStyle(
  94           mUrlOrSizes, mCharsetOrSrcset, mCrossOrigin, mMedia,
  95           mReferrerPolicyOrIntegrity,
  96           mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
  97           mIsLinkPreload);
  98       break;
  99     case eSpeculativeLoadManifest:
 100       // TODO: remove this
 101       break;
 102     case eSpeculativeLoadSetDocumentCharset: {
 103       NS_ASSERTION(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
 104                            .Length() == 1,
 105                    "Unexpected charset source string");
 106       int32_t intSource =
 107           (int32_t)mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
 108               .First();
 109       aExecutor->SetDocumentCharsetAndSource(WrapNotNull(mEncoding), intSource);
 110     } break;
 111     case eSpeculativeLoadSetDocumentMode: {
 112       NS_ASSERTION(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
 113                            .Length() == 1,
 114                    "Unexpected document mode string");
 115       nsHtml5DocumentMode mode =
 116           (nsHtml5DocumentMode)
 117               mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
 118                   .First();
 119       aExecutor->SetDocumentMode(mode);
 120     } break;
 121     case eSpeculativeLoadPreconnect:
 122       aExecutor->Preconnect(mUrlOrSizes, mCrossOrigin);
 123       break;
 124     case eSpeculativeLoadFont:
 125       aExecutor->PreloadFont(mUrlOrSizes, mCrossOrigin, mMedia,
 126                              mReferrerPolicyOrIntegrity);
 127       break;
 128     case eSpeculativeLoadFetch:
 129       aExecutor->PreloadFetch(mUrlOrSizes, mCrossOrigin, mMedia,
 130                               mReferrerPolicyOrIntegrity);
 131       break;
 132     default:
 133       MOZ_ASSERT_UNREACHABLE("Bogus speculative load.");
 134       break;
 135   }
 136 }