// This method is meant to match the HTML5 definition of "running a script"
// http://www.whatwg.org/specs/web-apps/current-work/multipage/scripting-1.html#running-a-script
void HTMLScriptRunner::runScript(Element* script, const TextPosition1& scriptStartPosition)
{
ASSERT(m_document);
ASSERT(!haveParsingBlockingScript());
{
InsertionPointRecord insertionPointRecord(m_host->inputStream());
NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
ScriptElement* scriptElement = toScriptElement(script);
ASSERT(scriptElement);
scriptElement->prepareScript(scriptStartPosition);
if (!scriptElement->willBeParserExecuted())
return;
if (scriptElement->willExecuteWhenDocumentFinishedParsing())
requestDeferredScript(script);
else if (scriptElement->readyToBeParserExecuted()) {
if (m_scriptNestingLevel == 1) {
m_parsingBlockingScript.setElement(script);
m_parsingBlockingScript.setStartingPosition(scriptStartPosition);
} else {
ScriptSourceCode sourceCode(script->textContent(), documentURLForScriptExecution(m_document), scriptStartPosition);
scriptElement->executeScript(sourceCode);
}
} else
requestParsingBlockingScript(script);
}
}
// This method is meant to match the HTML5 definition of "running a script"
// http://www.whatwg.org/specs/web-apps/current-work/multipage/scripting-1.html#running-a-script
void HTMLScriptRunner::runScript(Element* script, const TextPosition1& scriptStartPosition)
{
ASSERT(m_document);
ASSERT(!haveParsingBlockingScript());
{
InsertionPointRecord insertionPointRecord(m_host->inputStream());
NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
ScriptElement* scriptElement = toScriptElement(script);
ASSERT(scriptElement);
if (!scriptElement->shouldExecuteAsJavaScript())
return;
if (script->hasAttribute(srcAttr)) {
if (script->hasAttribute(asyncAttr)) // Async takes precendence over defer.
return; // Asynchronous scripts handle themselves.
if (script->hasAttribute(deferAttr))
requestDeferredScript(script);
else
requestParsingBlockingScript(script);
} else {
// FIXME: We do not block inline <script> tags on stylesheets to match the
// old parser for now. When we do, the ASSERT below should be added.
// See https://bugs.webkit.org/show_bug.cgi?id=40047
// ASSERT(document()->haveStylesheetsLoaded());
ASSERT(isExecutingScript());
ScriptSourceCode sourceCode(script->textContent(), documentURLForScriptExecution(m_document), scriptStartPosition);
scriptElement->executeScript(sourceCode);
}
}
}
void XMLDocumentParser::notifyFinished(CachedResource* unusedResource)
{
ASSERT_UNUSED(unusedResource, unusedResource == m_pendingScript);
ASSERT(m_pendingScript->accessCount() > 0);
ScriptSourceCode sourceCode(m_pendingScript.get());
bool errorOccurred = m_pendingScript->errorOccurred();
bool wasCanceled = m_pendingScript->wasCanceled();
m_pendingScript->removeClient(this);
m_pendingScript = 0;
RefPtr<Element> e = m_scriptElement;
m_scriptElement = 0;
ScriptElement* scriptElement = toScriptElement(e.get());
ASSERT(scriptElement);
// JavaScript can detach this parser, make sure it's kept alive even if detached.
RefPtr<XMLDocumentParser> protect(this);
if (errorOccurred)
scriptElement->dispatchErrorEvent();
else if (!wasCanceled) {
scriptElement->executeScript(sourceCode);
scriptElement->dispatchLoadEvent();
}
m_scriptElement = 0;
if (!isDetached() && !m_requestingScript)
resumeParsing();
}
void XMLDocumentParser::parseEndElement()
{
exitText();
RefPtr<ContainerNode> n = m_currentNode;
n->finishParsingChildren();
if (!scriptingContentIsAllowed(m_scriptingPermission) && n->isElementNode() && toScriptElement(static_cast<Element*>(n.get()))) {
popCurrentNode();
ExceptionCode ec;
n->remove(ec);
return;
}
if (!n->isElementNode() || !m_view) {
if (!m_currentNodeStack.isEmpty())
popCurrentNode();
return;
}
Element* element = static_cast<Element*>(n.get());
// The element's parent may have already been removed from document.
// Parsing continues in this case, but scripts aren't executed.
if (!element->inDocument()) {
popCurrentNode();
return;
}
ScriptElement* scriptElement = toScriptElement(element);
if (!scriptElement) {
popCurrentNode();
return;
}
// don't load external scripts for standalone documents (for now)
ASSERT(!m_pendingScript);
m_requestingScript = true;
if (scriptElement->prepareScript(m_scriptStartPosition, ScriptElement::AllowLegacyTypeInTypeAttribute)) {
if (scriptElement->readyToBeParserExecuted())
scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition));
else if (scriptElement->willBeParserExecuted()) {
m_pendingScript = scriptElement->cachedScript();
m_scriptElement = element;
m_pendingScript->addClient(this);
// m_pendingScript will be 0 if script was already loaded and addClient() executed it.
if (m_pendingScript)
pauseParsing();
} else
m_scriptElement = 0;
}
m_requestingScript = false;
popCurrentNode();
}
// This method is meant to match the HTML5 definition of "running a script"
// http://www.whatwg.org/specs/web-apps/current-work/multipage/scripting-1.html#running-a-script
void HTMLScriptRunner::runScript(Element* script, const TextPosition& scriptStartPosition)
{
ASSERT(m_document);
ASSERT(!hasParserBlockingScript());
{
ScriptElement* scriptElement = toScriptElement(script);
// This contains both and ASSERTION and a null check since we should not
// be getting into the case of a null script element, but seem to be from
// time to time. The assertion is left in to help find those cases and
// is being tracked by <https://bugs.webkit.org/show_bug.cgi?id=60559>.
ASSERT(scriptElement);
if (!scriptElement)
return;
// FIXME: This may be too agressive as we always deliver mutations at
// every script element, even if it's not ready to execute yet. There's
// unfortuantely no obvious way to tell if prepareScript is going to
// execute the script from out here.
if (!isExecutingScript()) {
#if ENABLE(CUSTOM_ELEMENTS)
CustomElementRegistry::deliverAllLifecycleCallbacks();
#endif
MutationObserver::deliverAllMutations();
}
InsertionPointRecord insertionPointRecord(m_host->inputStream());
NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
scriptElement->prepareScript(scriptStartPosition);
if (!scriptElement->willBeParserExecuted())
return;
if (scriptElement->willExecuteWhenDocumentFinishedParsing())
requestDeferredScript(script);
else if (scriptElement->readyToBeParserExecuted()) {
if (m_scriptNestingLevel == 1) {
m_parserBlockingScript.setElement(script);
m_parserBlockingScript.setStartingPosition(scriptStartPosition);
} else {
ScriptSourceCode sourceCode(script->textContent(), documentURLForScriptExecution(m_document), scriptStartPosition);
scriptElement->executeScript(sourceCode);
}
} else
requestParsingBlockingScript(script);
}
}
// This method is meant to match the HTML5 definition of "running a script"
// http://www.whatwg.org/specs/web-apps/current-work/multipage/scripting-1.html#running-a-script
void HTMLScriptRunner::runScript(Element* script, const TextPosition1& scriptStartPosition)
{
ASSERT(m_document);
ASSERT(!haveParsingBlockingScript());
{
InsertionPointRecord insertionPointRecord(m_host->inputStream());
NestingLevelIncrementer nestingLevelIncrementer(m_scriptNestingLevel);
ScriptElement* scriptElement = toScriptElement(script);
// This contains both and ASSERTION and a null check since we should not
// be getting into the case of a null script element, but seem to be from
// time to time. The assertion is left in to help find those cases and
// is being tracked by <https://bugs.webkit.org/show_bug.cgi?id=60559>.
ASSERT(scriptElement);
if (!scriptElement)
return;
scriptElement->prepareScript(scriptStartPosition);
if (!scriptElement->willBeParserExecuted())
return;
if (scriptElement->willExecuteWhenDocumentFinishedParsing())
requestDeferredScript(script);
else if (scriptElement->readyToBeParserExecuted()) {
if (m_scriptNestingLevel == 1) {
m_parsingBlockingScript.setElement(script);
m_parsingBlockingScript.setStartingPosition(scriptStartPosition);
} else {
ScriptSourceCode sourceCode(script->textContent(), documentURLForScriptExecution(m_document), scriptStartPosition);
scriptElement->executeScript(sourceCode);
}
} else
requestParsingBlockingScript(script);
}
}
void XMLDocumentParser::endElementNs()
{
if (isStopped())
return;
if (m_parserPaused) {
m_pendingCallbacks->appendEndElementNSCallback();
return;
}
// JavaScript can detach the parser. Make sure this is not released
// before the end of this method.
RefPtr<XMLDocumentParser> protect(this);
exitText();
RefPtr<ContainerNode> n = m_currentNode;
n->finishParsingChildren();
if (m_scriptingPermission == FragmentScriptingNotAllowed && n->isElementNode() && toScriptElement(static_cast<Element*>(n.get()))) {
popCurrentNode();
ExceptionCode ec;
n->remove(ec);
return;
}
if (!n->isElementNode() || !m_view) {
popCurrentNode();
return;
}
Element* element = static_cast<Element*>(n.get());
// The element's parent may have already been removed from document.
// Parsing continues in this case, but scripts aren't executed.
if (!element->inDocument()) {
popCurrentNode();
return;
}
ScriptElement* scriptElement = toScriptElement(element);
if (!scriptElement) {
popCurrentNode();
return;
}
// Don't load external scripts for standalone documents (for now).
ASSERT(!m_pendingScript);
m_requestingScript = true;
if (scriptElement->prepareScript(m_scriptStartPosition, ScriptElement::AllowLegacyTypeInTypeAttribute)) {
// FIXME: Script execution should be shared between
// the libxml2 and Qt XMLDocumentParser implementations.
if (scriptElement->readyToBeParserExecuted())
scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition));
else if (scriptElement->willBeParserExecuted()) {
m_pendingScript = scriptElement->cachedScript();
m_scriptElement = element;
m_pendingScript->addClient(this);
// m_pendingScript will be 0 if script was already loaded and addClient() executed it.
if (m_pendingScript)
pauseParsing();
} else
m_scriptElement = 0;
// JavaScript may have detached the parser
if (isDetached())
return;
}
m_requestingScript = false;
popCurrentNode();
}
void XMLDocumentParser::endElementNs()
{
if (isStopped())
return;
if (m_parserPaused) {
m_pendingCallbacks->appendEndElementNSCallback();
return;
}
exitText();
Node* n = m_currentNode;
n->finishParsingChildren();
if (m_scriptingPermission == FragmentScriptingNotAllowed && n->isElementNode() && toScriptElement(static_cast<Element*>(n))) {
popCurrentNode();
ExceptionCode ec;
n->remove(ec);
return;
}
if (!n->isElementNode() || !m_view) {
popCurrentNode();
return;
}
Element* element = static_cast<Element*>(n);
// The element's parent may have already been removed from document.
// Parsing continues in this case, but scripts aren't executed.
if (!element->inDocument()) {
popCurrentNode();
return;
}
ScriptElement* scriptElement = toScriptElement(element);
if (!scriptElement) {
popCurrentNode();
return;
}
// Don't load external scripts for standalone documents (for now).
ASSERT(!m_pendingScript);
m_requestingScript = true;
#if ENABLE(XHTMLMP)
if (!scriptElement->shouldExecuteAsJavaScript())
document()->setShouldProcessNoscriptElement(true);
else
#endif
{
// FIXME: Script execution should be shared should be shared between
// the libxml2 and Qt XMLDocumentParser implementations.
// JavaScript can detach the parser. Make sure this is not released
// before the end of this method.
RefPtr<XMLDocumentParser> protect(this);
String scriptHref = scriptElement->sourceAttributeValue();
if (!scriptHref.isEmpty()) {
// we have a src attribute
String scriptCharset = scriptElement->scriptCharset();
if (element->dispatchBeforeLoadEvent(scriptHref) &&
(m_pendingScript = document()->cachedResourceLoader()->requestScript(scriptHref, scriptCharset))) {
m_scriptElement = element;
m_pendingScript->addClient(this);
// m_pendingScript will be 0 if script was already loaded and ref() executed it
if (m_pendingScript)
pauseParsing();
} else
m_scriptElement = 0;
} else
scriptElement->executeScript(ScriptSourceCode(scriptElement->scriptContent(), document()->url(), m_scriptStartPosition));
// JavaScript may have detached the parser
if (isDetached())
return;
}
m_requestingScript = false;
popCurrentNode();
}