C++ nsTArray::Length方法代码示例

void
ThebesLayerD3D9::DrawRegion(nsIntRegion &aRegion, SurfaceMode aMode,
                            const nsTArray<ReadbackProcessor::Update>& aReadbackUpdates)
{
  HRESULT hr;
  nsIntRect visibleRect = mVisibleRegion.GetBounds();

  nsRefPtr<gfxASurface> destinationSurface;
  nsIntRect bounds = aRegion.GetBounds();
  nsRefPtr<IDirect3DTexture9> tmpTexture;
  OpaqueRenderer opaqueRenderer(aRegion);
  OpaqueRenderer opaqueRendererOnWhite(aRegion);

  switch (aMode)
  {
    case SurfaceMode::SURFACE_OPAQUE:
      destinationSurface = opaqueRenderer.Begin(this);
      break;

    case SurfaceMode::SURFACE_SINGLE_CHANNEL_ALPHA: {
      hr = device()->CreateTexture(bounds.width, bounds.height, 1,
                                   0, D3DFMT_A8R8G8B8,
                                   D3DPOOL_SYSTEMMEM, getter_AddRefs(tmpTexture), nullptr);

      if (FAILED(hr)) {
        ReportFailure(NS_LITERAL_CSTRING("Failed to create temporary texture in system memory."), hr);
        return;
      }

      // XXX - We may consider retaining a SYSTEMMEM texture texture the size
      // of our DEFAULT texture and then use UpdateTexture and add dirty rects
      // to update in a single call.
      nsRefPtr<gfxWindowsSurface> dest = new gfxWindowsSurface(
          gfxIntSize(bounds.width, bounds.height), gfxImageFormat::ARGB32);
      // If the contents of this layer don't require component alpha in the
      // end of rendering, it's safe to enable Cleartype since all the Cleartype
      // glyphs must be over (or under) opaque pixels.
      dest->SetSubpixelAntialiasingEnabled(!(mContentFlags & CONTENT_COMPONENT_ALPHA));
      destinationSurface = dest.forget();
      break;
    }

    case SurfaceMode::SURFACE_COMPONENT_ALPHA: {
      nsRefPtr<gfxWindowsSurface> onBlack = opaqueRenderer.Begin(this);
      nsRefPtr<gfxWindowsSurface> onWhite = opaqueRendererOnWhite.Begin(this);
      if (onBlack && onWhite) {
        FillSurface(onBlack, aRegion, bounds.TopLeft(), gfxRGBA(0.0, 0.0, 0.0, 1.0));
        FillSurface(onWhite, aRegion, bounds.TopLeft(), gfxRGBA(1.0, 1.0, 1.0, 1.0));
        gfxASurface* surfaces[2] = { onBlack.get(), onWhite.get() };
        destinationSurface = new gfxTeeSurface(surfaces, ArrayLength(surfaces));
        // Using this surface as a source will likely go horribly wrong, since
        // only the onBlack surface will really be used, so alpha information will
        // be incorrect.
        destinationSurface->SetAllowUseAsSource(false);
      }
      break;
    }
  }

  if (!destinationSurface)
    return;

  nsRefPtr<gfxContext> context;
  if (gfxPlatform::GetPlatform()->SupportsAzureContentForType(BackendType::CAIRO)) {
     RefPtr<DrawTarget> dt =
        gfxPlatform::GetPlatform()->CreateDrawTargetForSurface(destinationSurface,
                                                               IntSize(destinationSurface->GetSize().width,
                                                                       destinationSurface->GetSize().height));

    context = new gfxContext(dt);
  } else {
    context = new gfxContext(destinationSurface);
  }

  context->Translate(gfxPoint(-bounds.x, -bounds.y));
  LayerManagerD3D9::CallbackInfo cbInfo = mD3DManager->GetCallbackInfo();
  cbInfo.Callback(this, context, aRegion, DrawRegionClip::CLIP_NONE, nsIntRegion(), cbInfo.CallbackData);

  for (uint32_t i = 0; i < aReadbackUpdates.Length(); ++i) {
    NS_ASSERTION(aMode == SurfaceMode::SURFACE_OPAQUE,
                 "Transparent surfaces should not be used for readback");
    const ReadbackProcessor::Update& update = aReadbackUpdates[i];
    nsIntPoint offset = update.mLayer->GetBackgroundLayerOffset();
    nsRefPtr<gfxContext> ctx =
        update.mLayer->GetSink()->BeginUpdate(update.mUpdateRect + offset,
                                              update.mSequenceCounter);
    if (ctx) {
      ctx->Translate(gfxPoint(offset.x, offset.y));
      ctx->SetSource(destinationSurface, gfxPoint(bounds.x, bounds.y));
      ctx->Paint();
      update.mLayer->GetSink()->EndUpdate(ctx, update.mUpdateRect + offset);
    }
  }

  // Release the cairo d3d9 surface before we try to composite it
  context = nullptr;

  nsAutoTArray<IDirect3DTexture9*,2> srcTextures;
  nsAutoTArray<IDirect3DTexture9*,2> destTextures;
  switch (aMode)
//.........这里部分代码省略.........

bool
JavaScriptChild::AnswerCall(const ObjectId &objId, const nsTArray<JSParam> &argv, ReturnStatus *rs,
                            JSVariant *result, nsTArray<JSParam> *outparams)
{
    AutoSafeJSContext cx;
    JSAutoRequest request(cx);

    // The outparam will be written to the buffer, so it must be set even if
    // the parent won't read it.
    *result = void_t();

    RootedObject obj(cx, findObject(objId));
    if (!obj)
        return false;

    MOZ_ASSERT(argv.Length() >= 2);

    RootedValue objv(cx);
    if (!toValue(cx, argv[0], &objv))
        return fail(cx, rs);

    JSAutoCompartment comp(cx, &objv.toObject());

    *result = JSVariant(void_t());

    AutoValueVector vals(cx);
    AutoValueVector outobjects(cx);
    for (size_t i = 0; i < argv.Length(); i++) {
        if (argv[i].type() == JSParam::Tvoid_t) {
            // This is an outparam.
            JSCompartment *compartment = js::GetContextCompartment(cx);
            RootedObject global(cx, JS_GetGlobalForCompartmentOrNull(cx, compartment));
            RootedObject obj(cx, xpc::NewOutObject(cx, global));
            if (!obj)
                return fail(cx, rs);
            if (!outobjects.append(ObjectValue(*obj)))
                return fail(cx, rs);
            if (!vals.append(ObjectValue(*obj)))
                return fail(cx, rs);
        } else {
            RootedValue v(cx);
            if (!toValue(cx, argv[i].get_JSVariant(), &v))
                return fail(cx, rs);
            if (!vals.append(v))
                return fail(cx, rs);
        }
    }

    uint32_t oldOpts =
        JS_SetOptions(cx, JS_GetOptions(cx) | JSOPTION_DONT_REPORT_UNCAUGHT);

    RootedValue rval(cx);
    bool success = JS::Call(cx, vals[1], vals[0], vals.length() - 2, vals.begin() + 2, &rval);

    JS_SetOptions(cx, oldOpts);

    if (!success)
        return fail(cx, rs);

    if (!toVariant(cx, rval, result))
        return fail(cx, rs);

    // Prefill everything with a dummy jsval.
    for (size_t i = 0; i < outobjects.length(); i++)
        outparams->AppendElement(JSParam(void_t()));

    // Go through each argument that was an outparam, retrieve the "value"
    // field, and add it to a temporary list. We need to do this separately
    // because the outparams vector is not rooted.
    vals.clear();
    for (size_t i = 0; i < outobjects.length(); i++) {
        RootedObject obj(cx, &outobjects[i].toObject());

        jsval v;
        JSBool found;
        if (JS_HasProperty(cx, obj, "value", &found)) {
            if (!JS_GetProperty(cx, obj, "value", &v))
                return fail(cx, rs);
        } else {
            v = UndefinedValue();
        }
        if (!vals.append(v))
            return fail(cx, rs);
    }

    // Copy the outparams. If any outparam is already set to a void_t, we
    // treat this as the outparam never having been set.
    for (size_t i = 0; i < vals.length(); i++) {
        JSVariant variant;
        if (!toVariant(cx, vals[i], &variant))
            return fail(cx, rs);
        outparams->ReplaceElementAt(i, JSParam(variant));
    }

    return ok(rs);
}

nsCString
ToHexString(const nsTArray<uint8_t>& aBytes)
{
  return ToHexString(aBytes.Elements(), aBytes.Length());
}

bool
WrapperAnswer::AnswerCallOrConstruct(const ObjectId &objId,
                                     const nsTArray<JSParam> &argv,
                                     const bool &construct,
                                     ReturnStatus *rs,
                                     JSVariant *result,
                                     nsTArray<JSParam> *outparams)
{
    AutoSafeJSContext cx;
    JSAutoRequest request(cx);

    // The outparam will be written to the buffer, so it must be set even if
    // the parent won't read it.
    *result = UndefinedVariant();

    RootedObject obj(cx, findObjectById(cx, objId));
    if (!obj)
        return fail(cx, rs);

    JSAutoCompartment comp(cx, obj);

    MOZ_ASSERT(argv.Length() >= 2);

    RootedValue objv(cx);
    if (!fromVariant(cx, argv[0], &objv))
        return fail(cx, rs);

    *result = JSVariant(UndefinedVariant());

    AutoValueVector vals(cx);
    AutoValueVector outobjects(cx);
    for (size_t i = 0; i < argv.Length(); i++) {
        if (argv[i].type() == JSParam::Tvoid_t) {
            // This is an outparam.
            JSCompartment *compartment = js::GetContextCompartment(cx);
            RootedObject global(cx, JS_GetGlobalForCompartmentOrNull(cx, compartment));
            RootedObject obj(cx, xpc::NewOutObject(cx, global));
            if (!obj)
                return fail(cx, rs);
            if (!outobjects.append(ObjectValue(*obj)))
                return fail(cx, rs);
            if (!vals.append(ObjectValue(*obj)))
                return fail(cx, rs);
        } else {
            RootedValue v(cx);
            if (!fromVariant(cx, argv[i].get_JSVariant(), &v))
                return fail(cx, rs);
            if (!vals.append(v))
                return fail(cx, rs);
        }
    }

    RootedValue rval(cx);
    {
        AutoSaveContextOptions asco(cx);
        ContextOptionsRef(cx).setDontReportUncaught(true);

        HandleValueArray args = HandleValueArray::subarray(vals, 2, vals.length() - 2);
        bool success;
        if (construct)
            success = JS::Construct(cx, vals[0], args, &rval);
        else
            success = JS::Call(cx, vals[1], vals[0], args, &rval);
        if (!success)
            return fail(cx, rs);
    }

    if (!toVariant(cx, rval, result))
        return fail(cx, rs);

    // Prefill everything with a dummy jsval.
    for (size_t i = 0; i < outobjects.length(); i++)
        outparams->AppendElement(JSParam(void_t()));

    // Go through each argument that was an outparam, retrieve the "value"
    // field, and add it to a temporary list. We need to do this separately
    // because the outparams vector is not rooted.
    vals.clear();
    for (size_t i = 0; i < outobjects.length(); i++) {
        RootedObject obj(cx, &outobjects[i].toObject());

        RootedValue v(cx);
        bool found;
        if (JS_HasProperty(cx, obj, "value", &found)) {
            if (!JS_GetProperty(cx, obj, "value", &v))
                return fail(cx, rs);
        } else {
            v = UndefinedValue();
        }
        if (!vals.append(v))
            return fail(cx, rs);
    }

    // Copy the outparams. If any outparam is already set to a void_t, we
    // treat this as the outparam never having been set.
    for (size_t i = 0; i < vals.length(); i++) {
        JSVariant variant;
        if (!toVariant(cx, vals[i], &variant))
            return fail(cx, rs);
        outparams->ReplaceElementAt(i, JSParam(variant));
//.........这里部分代码省略.........

nsresult
HTMLFormControlsCollection::GetSortedControls(
  nsTArray<nsGenericHTMLFormElement*>& aControls) const
{
#ifdef DEBUG
  HTMLFormElement::AssertDocumentOrder(mElements, mForm);
  HTMLFormElement::AssertDocumentOrder(mNotInElements, mForm);
#endif

  aControls.Clear();

  // Merge the elements list and the not in elements list. Both lists are
  // already sorted.
  uint32_t elementsLen = mElements.Length();
  uint32_t notInElementsLen = mNotInElements.Length();
  aControls.SetCapacity(elementsLen + notInElementsLen);

  uint32_t elementsIdx = 0;
  uint32_t notInElementsIdx = 0;

  while (elementsIdx < elementsLen || notInElementsIdx < notInElementsLen) {
    // Check whether we're done with mElements
    if (elementsIdx == elementsLen) {
      NS_ASSERTION(notInElementsIdx < notInElementsLen,
                   "Should have remaining not-in-elements");
      // Append the remaining mNotInElements elements
      if (!aControls.AppendElements(mNotInElements.Elements() +
                                      notInElementsIdx,
                                    notInElementsLen -
                                      notInElementsIdx)) {
        return NS_ERROR_OUT_OF_MEMORY;
      }
      break;
    }
    // Check whether we're done with mNotInElements
    if (notInElementsIdx == notInElementsLen) {
      NS_ASSERTION(elementsIdx < elementsLen,
                   "Should have remaining in-elements");
      // Append the remaining mElements elements
      if (!aControls.AppendElements(mElements.Elements() +
                                      elementsIdx,
                                    elementsLen -
                                      elementsIdx)) {
        return NS_ERROR_OUT_OF_MEMORY;
      }
      break;
    }
    // Both lists have elements left.
    NS_ASSERTION(mElements[elementsIdx] &&
                 mNotInElements[notInElementsIdx],
                 "Should have remaining elements");
    // Determine which of the two elements should be ordered
    // first and add it to the end of the list.
    nsGenericHTMLFormElement* elementToAdd;
    if (HTMLFormElement::CompareFormControlPosition(
          mElements[elementsIdx], mNotInElements[notInElementsIdx], mForm) < 0) {
      elementToAdd = mElements[elementsIdx];
      ++elementsIdx;
    } else {
      elementToAdd = mNotInElements[notInElementsIdx];
      ++notInElementsIdx;
    }
    // Add the first element to the list.
    if (!aControls.AppendElement(elementToAdd)) {
      return NS_ERROR_OUT_OF_MEMORY;
    }
  }

  NS_ASSERTION(aControls.Length() == elementsLen + notInElementsLen,
               "Not all form controls were added to the sorted list");
#ifdef DEBUG
  HTMLFormElement::AssertDocumentOrder(aControls, mForm);
#endif

  return NS_OK;
}

nsresult
nsTextAttrsMgr::GetRange(const nsTArray<nsITextAttr*>& aTextAttrArray,
                         PRInt32 *aStartHTOffset, PRInt32 *aEndHTOffset)
{
  PRUint32 attrLen = aTextAttrArray.Length();

  // Navigate backward from anchor accessible to find start offset.
  for (PRInt32 childIdx = mOffsetAccIdx - 1; childIdx >= 0; childIdx--) {
    nsAccessible *currAcc = mHyperTextAcc->GetChildAt(childIdx);

    // Stop on embedded accessible since embedded accessibles are combined into
    // own range.
    if (nsAccUtils::IsEmbeddedObject(currAcc))
      break;

    nsIContent *currElm = nsCoreUtils::GetDOMElementFor(currAcc->GetContent());
    NS_ENSURE_STATE(currElm);

    bool offsetFound = false;
    for (PRUint32 attrIdx = 0; attrIdx < attrLen; attrIdx++) {
      nsITextAttr *textAttr = aTextAttrArray[attrIdx];
      if (!textAttr->Equal(currElm)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    *(aStartHTOffset) -= nsAccUtils::TextLength(currAcc);
  }

  // Navigate forward from anchor accessible to find end offset.
  PRInt32 childLen = mHyperTextAcc->GetChildCount();
  for (PRInt32 childIdx = mOffsetAccIdx + 1; childIdx < childLen; childIdx++) {
    nsAccessible *currAcc = mHyperTextAcc->GetChildAt(childIdx);
    if (nsAccUtils::IsEmbeddedObject(currAcc))
      break;

    nsIContent *currElm = nsCoreUtils::GetDOMElementFor(currAcc->GetContent());
    NS_ENSURE_STATE(currElm);

    bool offsetFound = false;
    for (PRUint32 attrIdx = 0; attrIdx < attrLen; attrIdx++) {
      nsITextAttr *textAttr = aTextAttrArray[attrIdx];

      // Alter the end offset when text attribute changes its value and stop
      // the search.
      if (!textAttr->Equal(currElm)) {
        offsetFound = true;
        break;
      }
    }

    if (offsetFound)
      break;

    (*aEndHTOffset) += nsAccUtils::TextLength(currAcc);
  }

  return NS_OK;
}

bool
nsCaseTransformTextRunFactory::TransformString(
    const nsAString& aString,
    nsString& aConvertedString,
    bool aAllUppercase,
    const nsIAtom* aLanguage,
    nsTArray<bool>& aCharsToMergeArray,
    nsTArray<bool>& aDeletedCharsArray,
    nsTransformedTextRun* aTextRun,
    nsTArray<uint8_t>* aCanBreakBeforeArray,
    nsTArray<nsStyleContext*>* aStyleArray)
{
  NS_PRECONDITION(!aTextRun || (aCanBreakBeforeArray && aStyleArray),
                  "either none or all three optional parameters required");

  uint32_t length = aString.Length();
  const char16_t* str = aString.BeginReading();

  bool mergeNeeded = false;

  bool capitalizeDutchIJ = false;
  bool prevIsLetter = false;
  bool ntPrefix = false; // true immediately after a word-initial 'n' or 't'
                         // when doing Irish lowercasing
  uint32_t sigmaIndex = uint32_t(-1);
  nsIUGenCategory::nsUGenCategory cat;

  uint8_t style = aAllUppercase ? NS_STYLE_TEXT_TRANSFORM_UPPERCASE : 0;
  const nsIAtom* lang = aLanguage;

  LanguageSpecificCasingBehavior languageSpecificCasing = GetCasingFor(lang);
  mozilla::GreekCasing::State greekState;
  mozilla::IrishCasing::State irishState;
  uint32_t irishMark = uint32_t(-1); // location of possible prefix letter(s)

  for (uint32_t i = 0; i < length; ++i) {
    uint32_t ch = str[i];

    nsStyleContext* styleContext;
    if (aTextRun) {
      styleContext = aTextRun->mStyles[i];
      style = aAllUppercase ? NS_STYLE_TEXT_TRANSFORM_UPPERCASE :
        styleContext->StyleText()->mTextTransform;

      const nsStyleFont* styleFont = styleContext->StyleFont();
      nsIAtom* newLang = styleFont->mExplicitLanguage
                         ? styleFont->mLanguage : nullptr;
      if (lang != newLang) {
        lang = newLang;
        languageSpecificCasing = GetCasingFor(lang);
        greekState.Reset();
        irishState.Reset();
        irishMark = uint32_t(-1);
      }
    }

    int extraChars = 0;
    const mozilla::unicode::MultiCharMapping *mcm;
    bool inhibitBreakBefore = false; // have we just deleted preceding hyphen?

    if (NS_IS_HIGH_SURROGATE(ch) && i < length - 1 &&
        NS_IS_LOW_SURROGATE(str[i + 1])) {
      ch = SURROGATE_TO_UCS4(ch, str[i + 1]);
    }

    switch (style) {
    case NS_STYLE_TEXT_TRANSFORM_LOWERCASE:
      if (languageSpecificCasing == eLSCB_Turkish) {
        if (ch == 'I') {
          ch = LATIN_SMALL_LETTER_DOTLESS_I;
          prevIsLetter = true;
          sigmaIndex = uint32_t(-1);
          break;
        }
        if (ch == LATIN_CAPITAL_LETTER_I_WITH_DOT_ABOVE) {
          ch = 'i';
          prevIsLetter = true;
          sigmaIndex = uint32_t(-1);
          break;
        }
      }

      cat = mozilla::unicode::GetGenCategory(ch);

      if (languageSpecificCasing == eLSCB_Irish &&
          cat == nsIUGenCategory::kLetter) {
        // See bug 1018805 for Irish lowercasing requirements
        if (!prevIsLetter && (ch == 'n' || ch == 't')) {
          ntPrefix = true;
        } else {
          if (ntPrefix && mozilla::IrishCasing::IsUpperVowel(ch)) {
            aConvertedString.Append('-');
            ++extraChars;
          }
          ntPrefix = false;
        }
      } else {
        ntPrefix = false;
      }

//.........这里部分代码省略.........

HRESULT STDMETHODCALLTYPE DWriteFontFileStream::GetFileSize(UINT64* fileSize) {
  *fileSize = mData.Length();
  return S_OK;
}

void
nsEventTargetChainItem::HandleEventTargetChain(
                          nsTArray<nsEventTargetChainItem>& aChain,
                          nsEventChainPostVisitor& aVisitor,
                          nsDispatchingCallback* aCallback,
                          ELMCreationDetector& aCd)
{
  // Save the target so that it can be restored later.
  nsCOMPtr<EventTarget> firstTarget = aVisitor.mEvent->target;
  uint32_t chainLength = aChain.Length();

  // Capture
  aVisitor.mEvent->mFlags.mInCapturePhase = true;
  aVisitor.mEvent->mFlags.mInBubblingPhase = false;
  for (uint32_t i = chainLength - 1; i > 0; --i) {
    nsEventTargetChainItem& item = aChain[i];
    if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
         item.ForceContentDispatch()) &&
        !aVisitor.mEvent->mFlags.mPropagationStopped) {
      item.HandleEvent(aVisitor, aCd);
    }

    if (item.GetNewTarget()) {
      // item is at anonymous boundary. Need to retarget for the child items.
      for (uint32_t j = i; j > 0; --j) {
        uint32_t childIndex = j - 1;
        EventTarget* newTarget = aChain[childIndex].GetNewTarget();
        if (newTarget) {
          aVisitor.mEvent->target = newTarget;
          break;
        }
      }
    }
  }

  // Target
  aVisitor.mEvent->mFlags.mInBubblingPhase = true;
  nsEventTargetChainItem& targetItem = aChain[0];
  if (!aVisitor.mEvent->mFlags.mPropagationStopped &&
      (!aVisitor.mEvent->mFlags.mNoContentDispatch ||
       targetItem.ForceContentDispatch())) {
    targetItem.HandleEvent(aVisitor, aCd);
  }
  if (aVisitor.mEvent->mFlags.mInSystemGroup) {
    targetItem.PostHandleEvent(aVisitor);
  }

  // Bubble
  aVisitor.mEvent->mFlags.mInCapturePhase = false;
  for (uint32_t i = 1; i < chainLength; ++i) {
    nsEventTargetChainItem& item = aChain[i];
    EventTarget* newTarget = item.GetNewTarget();
    if (newTarget) {
      // Item is at anonymous boundary. Need to retarget for the current item
      // and for parent items.
      aVisitor.mEvent->target = newTarget;
    }

    if (aVisitor.mEvent->mFlags.mBubbles || newTarget) {
      if ((!aVisitor.mEvent->mFlags.mNoContentDispatch ||
           item.ForceContentDispatch()) &&
          !aVisitor.mEvent->mFlags.mPropagationStopped) {
        item.HandleEvent(aVisitor, aCd);
      }
      if (aVisitor.mEvent->mFlags.mInSystemGroup) {
        item.PostHandleEvent(aVisitor);
      }
    }
  }
  aVisitor.mEvent->mFlags.mInBubblingPhase = false;

  if (!aVisitor.mEvent->mFlags.mInSystemGroup) {
    // Dispatch to the system event group.  Make sure to clear the
    // STOP_DISPATCH flag since this resets for each event group.
    aVisitor.mEvent->mFlags.mPropagationStopped = false;
    aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;

    // Setting back the original target of the event.
    aVisitor.mEvent->target = aVisitor.mEvent->originalTarget;

    // Special handling if PresShell (or some other caller)
    // used a callback object.
    if (aCallback) {
      aCallback->HandleEvent(aVisitor);
    }

    // Retarget for system event group (which does the default handling too).
    // Setting back the target which was used also for default event group.
    aVisitor.mEvent->target = firstTarget;
    aVisitor.mEvent->mFlags.mInSystemGroup = true;
    HandleEventTargetChain(aChain,
                           aVisitor,
                           aCallback,
                           aCd);
    aVisitor.mEvent->mFlags.mInSystemGroup = false;

    // After dispatch, clear all the propagation flags so that
    // system group listeners don't affect to the event.
    aVisitor.mEvent->mFlags.mPropagationStopped = false;
    aVisitor.mEvent->mFlags.mImmediatePropagationStopped = false;
//.........这里部分代码省略.........

nsresult
AppleATDecoder::GetInputAudioDescription(AudioStreamBasicDescription& aDesc,
                                         const nsTArray<uint8_t>& aExtraData)
{
  // Request the properties from CoreAudio using the codec magic cookie
  AudioFormatInfo formatInfo;
  PodZero(&formatInfo.mASBD);
  formatInfo.mASBD.mFormatID = mFormatID;
  if (mFormatID == kAudioFormatMPEG4AAC) {
    formatInfo.mASBD.mFormatFlags = mConfig.extended_profile;
  }
  formatInfo.mMagicCookieSize = aExtraData.Length();
  formatInfo.mMagicCookie = aExtraData.Elements();

  UInt32 formatListSize;
  // Attempt to retrieve the default format using
  // kAudioFormatProperty_FormatInfo method.
  // This method only retrieves the FramesPerPacket information required
  // by the decoder, which depends on the codec type and profile.
  aDesc.mFormatID = mFormatID;
  aDesc.mChannelsPerFrame = mConfig.channel_count;
  aDesc.mSampleRate = mConfig.samples_per_second;
  UInt32 inputFormatSize = sizeof(aDesc);
  OSStatus rv = AudioFormatGetProperty(kAudioFormatProperty_FormatInfo,
                                       0,
                                       NULL,
                                       &inputFormatSize,
                                       &aDesc);
  if (NS_WARN_IF(rv)) {
    return NS_ERROR_FAILURE;
  }

  // If any of the methods below fail, we will return the default format as
  // created using kAudioFormatProperty_FormatInfo above.
  rv = AudioFormatGetPropertyInfo(kAudioFormatProperty_FormatList,
                                  sizeof(formatInfo),
                                  &formatInfo,
                                  &formatListSize);
  if (rv || (formatListSize % sizeof(AudioFormatListItem))) {
    return NS_OK;
  }
  size_t listCount = formatListSize / sizeof(AudioFormatListItem);
  nsAutoArrayPtr<AudioFormatListItem> formatList(
    new AudioFormatListItem[listCount]);

  rv = AudioFormatGetProperty(kAudioFormatProperty_FormatList,
                              sizeof(formatInfo),
                              &formatInfo,
                              &formatListSize,
                              formatList);
  if (rv) {
    return NS_OK;
  }
  LOG("found %u available audio stream(s)",
      formatListSize / sizeof(AudioFormatListItem));
  // Get the index number of the first playable format.
  // This index number will be for the highest quality layer the platform
  // is capable of playing.
  UInt32 itemIndex;
  UInt32 indexSize = sizeof(itemIndex);
  rv = AudioFormatGetProperty(kAudioFormatProperty_FirstPlayableFormatFromList,
                              formatListSize,
                              formatList,
                              &indexSize,
                              &itemIndex);
  if (rv) {
    return NS_OK;
  }

  aDesc = formatList[itemIndex].mASBD;

  return NS_OK;
}

NS_IMETHODIMP
nsDOMMultipartBlob::MozSlice(PRInt64 aStart, PRInt64 aEnd,
                             const nsAString& aContentType,
                             PRUint8 optional_argc,
                             nsIDOMBlob **aBlob)
{
    nsresult rv;
    *aBlob = nsnull;

    // Truncate aStart and aEnd so that we stay within this file.
    PRUint64 thisLength;
    rv = GetSize(&thisLength);
    NS_ENSURE_SUCCESS(rv, rv);

    if (!optional_argc) {
        aEnd = (PRInt64)thisLength;
    }

    // Modifies aStart and aEnd.
    ParseSize((PRInt64)thisLength, aStart, aEnd);

    // If we clamped to nothing we create an empty blob
    nsTArray<nsCOMPtr<nsIDOMBlob> > blobs;

    PRUint64 length = aEnd - aStart;
    PRUint64 skipStart = aStart;

    NS_ABORT_IF_FALSE(PRUint64(aStart) + length <= thisLength, "Er, what?");

    // Prune the list of blobs if we can
    PRUint32 i;
    for (i = 0; length && skipStart && i < mBlobs.Length(); i++) {
        nsIDOMBlob* blob = mBlobs[i].get();

        PRUint64 l;
        rv = blob->GetSize(&l);
        NS_ENSURE_SUCCESS(rv, rv);

        if (skipStart < l) {
            PRUint64 upperBound = NS_MIN<PRUint64>(l - skipStart, length);

            nsCOMPtr<nsIDOMBlob> firstBlob;
            rv = mBlobs.ElementAt(i)->MozSlice(skipStart, skipStart + upperBound,
                                               aContentType, 2,
                                               getter_AddRefs(firstBlob));
            NS_ENSURE_SUCCESS(rv, rv);

            // Avoid wrapping a single blob inside an nsDOMMultipartBlob
            if (length == upperBound) {
                firstBlob.forget(aBlob);
                return NS_OK;
            }

            blobs.AppendElement(firstBlob);
            length -= upperBound;
            i++;
            break;
        }
        skipStart -= l;
    }

    // Now append enough blobs until we're done
    for (; length && i < mBlobs.Length(); i++) {
        nsIDOMBlob* blob = mBlobs[i].get();

        PRUint64 l;
        rv = blob->GetSize(&l);
        NS_ENSURE_SUCCESS(rv, rv);

        if (length < l) {
            nsCOMPtr<nsIDOMBlob> lastBlob;
            rv = mBlobs.ElementAt(i)->MozSlice(0, length, aContentType, 2,
                                               getter_AddRefs(lastBlob));
            NS_ENSURE_SUCCESS(rv, rv);

            blobs.AppendElement(lastBlob);
        } else {
            blobs.AppendElement(blob);
        }
        length -= NS_MIN<PRUint64>(l, length);
    }

    // we can create our blob now
    nsCOMPtr<nsIDOMBlob> blob = new nsDOMMultipartBlob(blobs, aContentType);
    blob.forget(aBlob);
    return NS_OK;
}

int32_t
GfxInfoBase::FindBlocklistedDeviceInList(const nsTArray<GfxDriverInfo>& info,
                                         nsAString& aSuggestedVersion,
                                         int32_t aFeature,
                                         OperatingSystem os)
{
  int32_t status = nsIGfxInfo::FEATURE_STATUS_UNKNOWN;

  nsAutoString adapterVendorID;
  nsAutoString adapterDeviceID;
  nsAutoString adapterDriverVersionString;
  if (NS_FAILED(GetAdapterVendorID(adapterVendorID)) ||
      NS_FAILED(GetAdapterDeviceID(adapterDeviceID)) ||
      NS_FAILED(GetAdapterDriverVersion(adapterDriverVersionString)))
  {
    return 0;
  }

  uint64_t driverVersion;
  ParseDriverVersion(adapterDriverVersionString, &driverVersion);

  uint32_t i = 0;
  for (; i < info.Length(); i++) {
    if (info[i].mOperatingSystem != DRIVER_OS_ALL &&
        info[i].mOperatingSystem != os)
    {
      continue;
    }

    if (info[i].mOperatingSystemVersion && info[i].mOperatingSystemVersion != OperatingSystemVersion()) {
        continue;
    }

    if (!info[i].mAdapterVendor.Equals(GfxDriverInfo::GetDeviceVendor(VendorAll), nsCaseInsensitiveStringComparator()) &&
        !info[i].mAdapterVendor.Equals(adapterVendorID, nsCaseInsensitiveStringComparator())) {
      continue;
    }

    if (info[i].mDevices != GfxDriverInfo::allDevices && info[i].mDevices->Length()) {
        bool deviceMatches = false;
        for (uint32_t j = 0; j < info[i].mDevices->Length(); j++) {
            if ((*info[i].mDevices)[j].Equals(adapterDeviceID, nsCaseInsensitiveStringComparator())) {
                deviceMatches = true;
                break;
            }
        }

        if (!deviceMatches) {
            continue;
        }
    }

    bool match = false;

    if (!info[i].mHardware.IsEmpty() && !info[i].mHardware.Equals(Hardware())) {
        continue;
    }
    if (!info[i].mModel.IsEmpty() && !info[i].mModel.Equals(Model())) {
        continue;
    }
    if (!info[i].mProduct.IsEmpty() && !info[i].mProduct.Equals(Product())) {
        continue;
    }
    if (!info[i].mManufacturer.IsEmpty() && !info[i].mManufacturer.Equals(Manufacturer())) {
        continue;
    }

#if defined(XP_WIN) || defined(ANDROID)
    switch (info[i].mComparisonOp) {
    case DRIVER_LESS_THAN:
      match = driverVersion < info[i].mDriverVersion;
      break;
    case DRIVER_LESS_THAN_OR_EQUAL:
      match = driverVersion <= info[i].mDriverVersion;
      break;
    case DRIVER_GREATER_THAN:
      match = driverVersion > info[i].mDriverVersion;
      break;
    case DRIVER_GREATER_THAN_OR_EQUAL:
      match = driverVersion >= info[i].mDriverVersion;
      break;
    case DRIVER_EQUAL:
      match = driverVersion == info[i].mDriverVersion;
      break;
    case DRIVER_NOT_EQUAL:
      match = driverVersion != info[i].mDriverVersion;
      break;
    case DRIVER_BETWEEN_EXCLUSIVE:
      match = driverVersion > info[i].mDriverVersion && driverVersion < info[i].mDriverVersionMax;
      break;
    case DRIVER_BETWEEN_INCLUSIVE:
      match = driverVersion >= info[i].mDriverVersion && driverVersion <= info[i].mDriverVersionMax;
      break;
    case DRIVER_BETWEEN_INCLUSIVE_START:
      match = driverVersion >= info[i].mDriverVersion && driverVersion < info[i].mDriverVersionMax;
      break;
    case DRIVER_COMPARISON_IGNORED:
      // We don't have a comparison op, so we match everything.
      match = true;
      break;
//.........这里部分代码省略.........

nsresult
nsDOMStoragePersistentDB::RemoveOwners(const nsTArray<nsString> &aOwners,
                                       bool aIncludeSubDomains,
                                       bool aMatch)
{
  if (aOwners.Length() == 0) {
    if (aMatch) {
      return NS_OK;
    }

    return RemoveAll();
  }

  // Using nsString here because it is going to be very long
  nsCString expression;

  if (aMatch) {
    expression.AppendLiteral("DELETE FROM webappsstore2_view WHERE scope IN (");
  } else {
    expression.AppendLiteral("DELETE FROM webappsstore2_view WHERE scope NOT IN (");
  }

  for (PRUint32 i = 0; i < aOwners.Length(); i++) {
    if (i)
      expression.AppendLiteral(" UNION ");

    expression.AppendLiteral(
      "SELECT DISTINCT scope FROM webappsstore2_temp WHERE scope GLOB :scope");
    expression.AppendInt(i);
    expression.AppendLiteral(" UNION ");
    expression.AppendLiteral(
      "SELECT DISTINCT scope FROM webappsstore2 WHERE scope GLOB :scope");
    expression.AppendInt(i);
  }
  expression.AppendLiteral(");");

  nsCOMPtr<mozIStorageStatement> statement;

  nsresult rv;

  rv = MaybeCommitInsertTransaction();
  NS_ENSURE_SUCCESS(rv, rv);

  rv = mConnection->CreateStatement(expression,
                                    getter_AddRefs(statement));
  NS_ENSURE_SUCCESS(rv, rv);

  for (PRUint32 i = 0; i < aOwners.Length(); i++) {
    nsCAutoString quotaKey;
    rv = nsDOMStorageDBWrapper::CreateDomainScopeDBKey(
      NS_ConvertUTF16toUTF8(aOwners[i]), quotaKey);

    if (DomainMaybeCached(quotaKey)) {
      mCachedUsage = 0;
      mCachedOwner.Truncate();
    }

    if (!aIncludeSubDomains)
      quotaKey.AppendLiteral(":");
    quotaKey.AppendLiteral("*");

    nsCAutoString paramName;
    paramName.Assign("scope");
    paramName.AppendInt(i);

    rv = statement->BindUTF8StringByName(paramName, quotaKey);
    NS_ENSURE_SUCCESS(rv, rv);
  }

  rv = statement->Execute();
  NS_ENSURE_SUCCESS(rv, rv);

  MarkAllScopesDirty();

  return NS_OK;
}

nsresult
nsSVGFilterInstance::BuildPrimitives(nsTArray<FilterPrimitiveDescription>& aPrimitiveDescrs,
                                     nsTArray<RefPtr<SourceSurface>>& aInputImages)
{
  mSourceGraphicIndex = GetLastResultIndex(aPrimitiveDescrs);

  // Clip previous filter's output to this filter's filter region.
  if (mSourceGraphicIndex >= 0) {
    FilterPrimitiveDescription& sourceDescr = aPrimitiveDescrs[mSourceGraphicIndex];
    sourceDescr.SetPrimitiveSubregion(sourceDescr.PrimitiveSubregion().Intersect(mFilterSpaceBounds));
  }

  // Get the filter primitive elements.
  nsTArray<RefPtr<nsSVGFE> > primitives;
  for (nsIContent* child = mFilterElement->nsINode::GetFirstChild();
       child;
       child = child->GetNextSibling()) {
    RefPtr<nsSVGFE> primitive;
    CallQueryInterface(child, (nsSVGFE**)getter_AddRefs(primitive));
    if (primitive) {
      primitives.AppendElement(primitive);
    }
  }

  // Maps source image name to source index.
  nsDataHashtable<nsStringHashKey, int32_t> imageTable(8);

  // The principal that we check principals of any loaded images against.
  nsCOMPtr<nsIPrincipal> principal = mTargetContent->NodePrincipal();

  bool filterInputIsTainted = IsFilterInputTainted(mTargetContent);

  for (uint32_t primitiveElementIndex = 0;
       primitiveElementIndex < primitives.Length();
       ++primitiveElementIndex) {
    nsSVGFE* filter = primitives[primitiveElementIndex];

    AutoTArray<int32_t,2> sourceIndices;
    nsresult rv = GetSourceIndices(filter, aPrimitiveDescrs, imageTable, sourceIndices);
    if (NS_FAILED(rv)) {
      return rv;
    }

    IntRect primitiveSubregion =
      ComputeFilterPrimitiveSubregion(filter, aPrimitiveDescrs, sourceIndices);

    nsTArray<bool> sourcesAreTainted;
    GetInputsAreTainted(aPrimitiveDescrs, sourceIndices, filterInputIsTainted, sourcesAreTainted);

    FilterPrimitiveDescription descr =
      filter->GetPrimitiveDescription(this, primitiveSubregion, sourcesAreTainted, aInputImages);

    descr.SetIsTainted(filter->OutputIsTainted(sourcesAreTainted, principal));
    descr.SetFilterSpaceBounds(mFilterSpaceBounds);
    descr.SetPrimitiveSubregion(primitiveSubregion.Intersect(descr.FilterSpaceBounds()));

    for (uint32_t i = 0; i < sourceIndices.Length(); i++) {
      int32_t inputIndex = sourceIndices[i];
      descr.SetInputPrimitive(i, inputIndex);

      ColorSpace inputColorSpace = inputIndex >= 0
        ? aPrimitiveDescrs[inputIndex].OutputColorSpace()
        : ColorSpace(ColorSpace::SRGB);

      ColorSpace desiredInputColorSpace = filter->GetInputColorSpace(i, inputColorSpace);
      descr.SetInputColorSpace(i, desiredInputColorSpace);
      if (i == 0) {
        // the output color space is whatever in1 is if there is an in1
        descr.SetOutputColorSpace(desiredInputColorSpace);
      }
    }

    if (sourceIndices.Length() == 0) {
      descr.SetOutputColorSpace(filter->GetOutputColorSpace());
    }

    aPrimitiveDescrs.AppendElement(descr);
    uint32_t primitiveDescrIndex = aPrimitiveDescrs.Length() - 1;

    nsAutoString str;
    filter->GetResultImageName().GetAnimValue(str, filter);
    imageTable.Put(str, primitiveDescrIndex);
  }

  return NS_OK;
}

// A U2F Sign operation creates a signature over the "param" arguments (plus
// some other stuff) using the private key indicated in the key handle argument.
//
// The format of the signed data is as follows:
//
//  32    Application parameter
//  1     User presence (0x01)
//  4     Counter
//  32    Challenge parameter
//
// The format of the signature data is as follows:
//
//  1     User presence
//  4     Counter
//  *     Signature
//
nsresult
U2FSoftTokenManager::Sign(nsTArray<uint8_t>& aApplication,
                          nsTArray<uint8_t>& aChallenge,
                          nsTArray<uint8_t>& aKeyHandle,
                          nsTArray<uint8_t>& aSignature)
{
  nsNSSShutDownPreventionLock locker;
  if (NS_WARN_IF(isAlreadyShutDown())) {
    return NS_ERROR_NOT_AVAILABLE;
  }

  MOZ_ASSERT(mInitialized);
  if (NS_WARN_IF(!mInitialized)) {
    nsresult rv = Init();
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return rv;
    }
  }

  MOZ_ASSERT(mWrappingKey);

  UniquePK11SlotInfo slot(PK11_GetInternalSlot());
  MOZ_ASSERT(slot.get());

  if (NS_WARN_IF((aChallenge.Length() != kParamLen) || (aApplication.Length() != kParamLen))) {
    MOZ_LOG(gNSSTokenLog, LogLevel::Warning,
            ("Parameter lengths are wrong! challenge=%d app=%d expected=%d",
             (uint32_t)aChallenge.Length(), (uint32_t)aApplication.Length(), kParamLen));

    return NS_ERROR_ILLEGAL_VALUE;
  }

  // Decode the key handle
  UniqueSECKEYPrivateKey privKey = PrivateKeyFromKeyHandle(slot, mWrappingKey,
                                                           aKeyHandle.Elements(),
                                                           aKeyHandle.Length(),
                                                           aApplication.Elements(),
                                                           aApplication.Length(),
                                                           locker);
  if (NS_WARN_IF(!privKey.get())) {
    MOZ_LOG(gNSSTokenLog, LogLevel::Warning, ("Couldn't get the priv key!"));
    return NS_ERROR_FAILURE;
  }

  // Increment the counter and turn it into a SECItem
  mCounter += 1;
  ScopedAutoSECItem counterItem(4);
  counterItem.data[0] = (mCounter >> 24) & 0xFF;
  counterItem.data[1] = (mCounter >> 16) & 0xFF;
  counterItem.data[2] = (mCounter >>  8) & 0xFF;
  counterItem.data[3] = (mCounter >>  0) & 0xFF;
  uint32_t counter = mCounter;
  AbstractThread::MainThread()->Dispatch(NS_NewRunnableFunction(
                                           [counter] () {
                                             MOZ_ASSERT(NS_IsMainThread());
                                             Preferences::SetUint(PREF_U2F_NSSTOKEN_COUNTER, counter);
                                           }));

  // Compute the signature
  mozilla::dom::CryptoBuffer signedDataBuf;
  if (NS_WARN_IF(!signedDataBuf.SetCapacity(1 + 4 + (2 * kParamLen), mozilla::fallible))) {
    return NS_ERROR_OUT_OF_MEMORY;
  }

  // It's OK to ignore the return values here because we're writing into
  // pre-allocated space
  signedDataBuf.AppendElements(aApplication.Elements(), aApplication.Length(),
                               mozilla::fallible);
  signedDataBuf.AppendElement(0x01, mozilla::fallible);
  signedDataBuf.AppendSECItem(counterItem);
  signedDataBuf.AppendElements(aChallenge.Elements(), aChallenge.Length(),
                               mozilla::fallible);

  if (MOZ_LOG_TEST(gNSSTokenLog, LogLevel::Debug)) {
    nsAutoCString base64;
    nsresult rv = Base64URLEncode(signedDataBuf.Length(), signedDataBuf.Elements(),
                                  Base64URLEncodePaddingPolicy::Omit, base64);
    if (NS_WARN_IF(NS_FAILED(rv))) {
      return NS_ERROR_FAILURE;
    }

    MOZ_LOG(gNSSTokenLog, LogLevel::Debug,
            ("U2F Token signing bytes (base64): %s", base64.get()));
  }
//.........这里部分代码省略.........