Quelle nsHtml5SpeculativeLoad.cpp Sprache: C

/* 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 "nsHtml5SpeculativeLoad.h"
#include "mozilla/Encoding.h"
#include "nsHtml5TreeOpExecutor.h"

using namespace mozilla;

nsHtml5SpeculativeLoad::nsHtml5SpeculativeLoad()
    : mOpCode(eSpeculativeLoadUninitialized),
      mIsAsync(false),
      mIsDefer(false),
      mIsLinkPreload(false),
      mIsError(false),
      mEncoding(nullptr) {
  MOZ_COUNT_CTOR(nsHtml5SpeculativeLoad);
  new (&mCharsetOrSrcset) nsString;
}

nsHtml5SpeculativeLoad::~nsHtml5SpeculativeLoad() {
  MOZ_COUNT_DTOR(nsHtml5SpeculativeLoad);
  NS_ASSERTION(mOpCode != eSpeculativeLoadUninitialized,
               "Uninitialized speculative load.");
  if (!(mOpCode == eSpeculativeLoadSetDocumentCharset ||
        mOpCode == eSpeculativeLoadMaybeComplainAboutCharset)) {
    mCharsetOrSrcset.~nsString();
  }
}

void nsHtml5SpeculativeLoad::Perform(nsHtml5TreeOpExecutor* aExecutor) {
  switch (mOpCode) {
    case eSpeculativeLoadBase:
      aExecutor->SetSpeculationBase(mUrlOrSizes);
      break;
    case eSpeculativeLoadCSP:
      aExecutor->AddSpeculationCSP(
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity);
      break;
    case eSpeculativeLoadMetaReferrer:
      aExecutor->UpdateReferrerInfoFromMeta(mReferrerPolicyOrIntegrity);
      break;
    case eSpeculativeLoadImage:
      aExecutor->PreloadImage(
          mUrlOrSizes, mCrossOrigin, mMedia, mCharsetOrSrcset,
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
          mReferrerPolicyOrIntegrity, mIsLinkPreload, mFetchPriority);
      break;
    case eSpeculativeLoadOpenPicture:
      aExecutor->PreloadOpenPicture();
      break;
    case eSpeculativeLoadEndPicture:
      aExecutor->PreloadEndPicture();
      break;
    case eSpeculativeLoadPictureSource:
      aExecutor->PreloadPictureSource(
          mCharsetOrSrcset, mUrlOrSizes,
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
          mMedia);
      break;
    case eSpeculativeLoadScript:
      aExecutor->PreloadScript(
          mUrlOrSizes, mCharsetOrSrcset,
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
          mCrossOrigin, mMedia, mNonce, mFetchPriority,
          mReferrerPolicyOrIntegrity, mScriptReferrerPolicy, false, mIsAsync,
          mIsDefer, mIsLinkPreload);
      break;
    case eSpeculativeLoadScriptFromHead:
      aExecutor->PreloadScript(
          mUrlOrSizes, mCharsetOrSrcset,
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
          mCrossOrigin, mMedia, mNonce, mFetchPriority,
          mReferrerPolicyOrIntegrity, mScriptReferrerPolicy, true, mIsAsync,
          mIsDefer, mIsLinkPreload);
      break;
    case eSpeculativeLoadStyle:
      aExecutor->PreloadStyle(
          mUrlOrSizes, mCharsetOrSrcset, mCrossOrigin, mMedia,
          mReferrerPolicyOrIntegrity, mNonce,
          mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity,
          mIsLinkPreload, mFetchPriority);
      break;
    case eSpeculativeLoadManifest:
      // TODO: remove this
      break;
    case eSpeculativeLoadSetDocumentCharset: {
      MOZ_ASSERT(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                         .Length() == 1,
                 "Unexpected charset source string");
      nsCharsetSource enumSource =
          (nsCharsetSource)
              mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                  .First();
      aExecutor->SetDocumentCharsetAndSource(WrapNotNull(mEncoding),
                                             enumSource);
      if (mCommitEncodingSpeculation) {
        aExecutor->CommitToInternalEncoding();
      }
    } break;
    case eSpeculativeLoadSetDocumentMode: {
      NS_ASSERTION(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                           .Length() == 1,
                   "Unexpected document mode string");
      nsHtml5DocumentMode mode =
          (nsHtml5DocumentMode)
              mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                  .First();
      aExecutor->SetDocumentMode(mode);
    } break;
    case eSpeculativeLoadPreconnect:
      aExecutor->Preconnect(mUrlOrSizes, mCrossOrigin);
      break;
    case eSpeculativeLoadFont:
      aExecutor->PreloadFont(mUrlOrSizes, mCrossOrigin, mMedia,
                             mReferrerPolicyOrIntegrity, mFetchPriority);
      break;
    case eSpeculativeLoadFetch:
      aExecutor->PreloadFetch(mUrlOrSizes, mCrossOrigin, mMedia,
                              mReferrerPolicyOrIntegrity, mFetchPriority);
      break;
    case eSpeculativeLoadMaybeComplainAboutCharset: {
      MOZ_ASSERT(mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                         .Length() == 2,
                 "Unexpected line number string");
      uint32_t high =
          (uint32_t)
              mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                  .CharAt(0);
      uint32_t low =
          (uint32_t)
              mTypeOrCharsetSourceOrDocumentModeOrMetaCSPOrSizesOrIntegrity
                  .CharAt(1);
      uint32_t line = (high << 16) | low;
      aExecutor->MaybeComplainAboutCharset(mMsgId, mIsError, (int32_t)line);
    } break;
    default:
      MOZ_ASSERT_UNREACHABLE("Bogus speculative load.");
      break;
  }
}

quality100%

¤ Dauer der Verarbeitung: 0.14 Sekunden (vorverarbeitet) ¤

Wurzel

Suchen

Beweissystem der NASA

Beweissystem Isabelle

NIST Cobol Testsuite

Cephes Mathematical Library

Wiener Entwicklungsmethode

Haftungshinweis

Die Informationen auf dieser Webseite wurden nach bestem Wissen sorgfältig zusammengestellt. Es wird jedoch weder Vollständigkeit, noch Richtigkeit, noch Qualität der bereit gestellten Informationen zugesichert.

Bemerkung:

Die farbliche Syntaxdarstellung ist noch experimentell.