https://bugs.webkit.org/show_bug.cgi?id=108771

Reviewed by Eric Seidel.

In cases where the ExceptionCode passed into a function is completely
ignored, this patch replaces it with a new IGNORE_EXCEPTION macro. This
makes our expectations about possible exceptions (or lack thereof)
explicit, rather than relying on implicit assumptions about whether a
variable is intentionally uninitialized or not. It also removes
knowledge about the internals of ExceptionCodes (that they're currently
ints, for instance) from code that shouldn't care, which will help with
future refactorings.

The implementation is entirely based upon ASSERT_NO_EXCEPTION, and
shouldn't have any visible effect on the web. As long as all the
current tests pass, we're good.

* Modules/indexeddb/IDBRequest.cpp:
(WebCore::IDBRequest::dispatchEvent):
(WebCore::IDBRequest::uncaughtExceptionInEventHandler):
* Modules/indexeddb/IDBTransaction.cpp:
(WebCore::IDBTransaction::stop):
* Modules/websockets/WebSocketChannel.cpp:
(WebCore::WebSocketChannel::processBuffer):
* dom/Document.cpp:
(WebCore::Document::processHttpEquiv):
* dom/ExceptionCodePlaceholder.h:
(WebCore):
* dom/Node.cpp:
(WebCore::Node::normalize):
* dom/Text.cpp:
(WebCore::Text::replaceWholeText):
* editing/AlternativeTextController.cpp:
(WebCore::AlternativeTextController::insertDictatedText):
* editing/AppendNodeCommand.cpp:
(WebCore::AppendNodeCommand::doApply):
(WebCore::AppendNodeCommand::doUnapply):
* editing/CompositeEditCommand.cpp:
(WebCore::CompositeEditCommand::insertNewDefaultParagraphElementAt):
* editing/DeleteFromTextNodeCommand.cpp:
(WebCore::DeleteFromTextNodeCommand::doUnapply):
* editing/Editor.cpp:
(WebCore::dispatchEditableContentChangedEvents):
(WebCore::Editor::applyEditingStyleToElement):
* editing/EditorCommand.cpp:
(WebCore::executeFormatBlock):
* editing/FormatBlockCommand.cpp:
(WebCore::FormatBlockCommand::elementForFormatBlockCommand):
* editing/InsertIntoTextNodeCommand.cpp:
(WebCore::InsertIntoTextNodeCommand::doApply):
(WebCore::InsertIntoTextNodeCommand::doUnapply):
* editing/InsertListCommand.cpp:
(WebCore::InsertListCommand::doApplyForSingleParagraph):
* editing/InsertNodeBeforeCommand.cpp:
(WebCore::InsertNodeBeforeCommand::doApply):
(WebCore::InsertNodeBeforeCommand::doUnapply):
* editing/RemoveCSSPropertyCommand.cpp:
(WebCore::RemoveCSSPropertyCommand::doApply):
(WebCore::RemoveCSSPropertyCommand::doUnapply):
* editing/RemoveNodeCommand.cpp:
(WebCore::RemoveNodeCommand::doApply):
(WebCore::RemoveNodeCommand::doUnapply):
* editing/ReplaceSelectionCommand.cpp:
(WebCore::ReplaceSelectionCommand::removeRedundantStylesAndKeepStyleSpanInline):
* editing/TextIterator.cpp:
(WebCore::TextIterator::getLocationAndLengthFromRange):
* editing/WrapContentsInDummySpanCommand.cpp:
(WebCore::WrapContentsInDummySpanCommand::executeApply):
(WebCore::WrapContentsInDummySpanCommand::doUnapply):
* editing/htmlediting.cpp:
(WebCore::comparePositions):
* editing/markup.cpp:
(WebCore::highestAncestorToWrapMarkup):
* html/FTPDirectoryDocument.cpp:
(WebCore::FTPDirectoryDocumentParser::appendEntry):
(WebCore::FTPDirectoryDocumentParser::createTDForFilename):
(WebCore::FTPDirectoryDocumentParser::loadDocumentTemplate):
(WebCore::FTPDirectoryDocumentParser::createBasicDocument):
* html/HTMLMediaElement.cpp:
(WebCore::HTMLMediaElement::rewind):
(WebCore::HTMLMediaElement::returnToRealtime):
(WebCore::HTMLMediaElement::playInternal):
(WebCore::HTMLMediaElement::percentLoaded):
(WebCore::HTMLMediaElement::mediaPlayerTimeChanged):
(WebCore::HTMLMediaElement::mediaPlayerDurationChanged):
(WebCore::HTMLMediaElement::applyMediaFragmentURI):
* html/HTMLOutputElement.cpp:
(WebCore::HTMLOutputElement::setTextContentInternal):
* html/HTMLSelectElement.cpp:
(WebCore::HTMLSelectElement::remove):
* html/HTMLTableElement.cpp:
(WebCore::HTMLTableElement::createTHead):
(WebCore::HTMLTableElement::deleteTHead):
(WebCore::HTMLTableElement::createTFoot):
(WebCore::HTMLTableElement::deleteTFoot):
(WebCore::HTMLTableElement::createCaption):
(WebCore::HTMLTableElement::deleteCaption):
* html/HTMLTextAreaElement.cpp:
(WebCore::HTMLTextAreaElement::setDefaultValue):
* html/ImageDocument.cpp:
(WebCore::ImageDocument::createDocumentStructure):
* html/InputType.cpp:
(WebCore::InputType::stepUpFromRenderer):
* html/MediaController.cpp:
(MediaController::bringElementUpToSpeed):
(MediaController::asyncEventTimerFired):
* html/MediaDocument.cpp:
(WebCore::MediaDocumentParser::createDocumentStructure):
(WebCore::MediaDocument::replaceMediaElementTimerFired):
* html/PluginDocument.cpp:
(WebCore::PluginDocumentParser::createDocumentStructure):
* html/RangeInputType.cpp:
(WebCore::RangeInputType::handleKeydownEvent):
* html/TimeRanges.cpp:
(TimeRanges::contain):
(TimeRanges::nearest):
* html/canvas/CanvasRenderingContext2D.cpp:
(WebCore::CanvasRenderingContext2D::drawImageFromRect):
* html/shadow/MediaControlElementTypes.cpp:
(WebCore::MediaControlSeekButtonElement::seekTimerFired):
* html/shadow/MediaControlElements.cpp:
(WebCore::MediaControlPanelElement::setPosition):
(WebCore::MediaControlPanelElement::resetPosition):
(WebCore::MediaControlStatusDisplayElement::update):
(WebCore::MediaControlRewindButtonElement::defaultEventHandler):
(WebCore::MediaControlTimelineElement::defaultEventHandler):
* html/shadow/MediaControls.cpp:
(WebCore::MediaControls::updateCurrentTimeDisplay):
(WebCore::MediaControls::createTextTrackDisplay):
* html/shadow/MediaControlsApple.cpp:
(WebCore::MediaControlsApple::updateCurrentTimeDisplay):
* html/shadow/MediaControlsBlackBerry.cpp:
(WebCore::MediaControlEmbeddedPanelElement::setPosition):
(WebCore::MediaControlEmbeddedPanelElement::resetPosition):
(WebCore::MediaControlFullscreenTimelineElement::defaultEventHandler):
(WebCore::MediaControlsBlackBerry::updateCurrentTimeDisplay):
* html/shadow/MediaControlsChromium.cpp:
(WebCore::MediaControlsChromium::updateCurrentTimeDisplay):
* html/track/InbandTextTrack.cpp:
(WebCore::InbandTextTrack::addGenericCue):
* inspector/InspectorCSSAgent.cpp:
(WebCore::InspectorCSSAgent::buildArrayForMatchedRuleList):
* inspector/InspectorHistory.cpp:
(WebCore::InspectorHistory::markUndoableState):
* inspector/InspectorResourceAgent.cpp:
(WebCore::InspectorResourceAgent::replayXHR):
* page/ContextMenuController.cpp:
(WebCore::ContextMenuController::contextMenuItemSelected):
* page/DOMWindow.cpp:
(WebCore::didAddStorageEventListener):
* page/DragController.cpp:
(WebCore::documentFragmentFromDragData):
* page/EventHandler.cpp:
(WebCore::EventHandler::dispatchDragEvent):
(WebCore::EventHandler::keyEvent):
(WebCore::EventHandler::handleTextInputEvent):
* page/Page.cpp:
(WebCore::Page::findStringMatchingRanges):
* platform/efl/RenderThemeEfl.cpp:
(WebCore::RenderThemeEfl::paintMediaSliderTrack):
* platform/graphics/blackberry/MediaPlayerPrivateBlackBerry.cpp:
(WebCore::MediaPlayerPrivate::percentLoaded):
* platform/gtk/RenderThemeGtk.cpp:
(WebCore::RenderThemeGtk::paintMediaSliderTrack):
* platform/mac/PasteboardMac.mm:
(WebCore::Pasteboard::getDataSelection):
(WebCore::documentFragmentWithImageResource):
(WebCore::Pasteboard::documentFragment):
* platform/mac/WebVideoFullscreenHUDWindowController.mm:
(-[WebVideoFullscreenHUDWindowController setCurrentTime:]):
(-[WebVideoFullscreenHUDWindowController setVolume:]):
* platform/qt/RenderThemeQt.cpp:
(WebCore::RenderThemeQt::paintMediaSliderTrack):
* rendering/RenderNamedFlowThread.cpp:
(WebCore::RenderNamedFlowThread::getRanges):
* rendering/RenderThemeMac.mm:
(WebCore::RenderThemeMac::paintMediaSliderTrack):
* svg/SVGTRefElement.cpp:
(WebCore::SVGTRefElement::detachTarget):
* xml/XMLTreeViewer.cpp:
(WebCore::XMLTreeViewer::transformDocumentToTreeView):
* xml/parser/XMLDocumentParserLibxml2.cpp:
(WebCore::XMLDocumentParser::endElementNs):
* xml/parser/XMLDocumentParserQt.cpp:
(WebCore::XMLDocumentParser::parseEndElement):


git-svn-id: http://svn.webkit.org/repository/webkit/trunk@142271 268f45cc-cd09-0410-ab3c-d52691b4dbfc