Value FunLang::evaluate() const
{
String lang = arg(0)->evaluate().toString();
const Attribute* languageAttribute = 0;
Node* node = evaluationContext().node.get();
while (node) {
if (node->isElementNode()) {
Element* element = toElement(node);
if (element->hasAttributes())
languageAttribute = element->getAttributeItem(XMLNames::langAttr);
}
if (languageAttribute)
break;
node = node->parentNode();
}
if (!languageAttribute)
return false;
String langValue = languageAttribute->value();
while (true) {
if (equalIgnoringCase(langValue, lang))
return true;
// Remove suffixes one by one.
size_t index = langValue.reverseFind('-');
if (index == notFound)
break;
langValue = langValue.left(index);
}
return false;
}
Value FunLang::evaluate() const
{
String lang = arg(0)->evaluate().toString();
Attribute* languageAttribute = 0;
Node* node = evaluationContext().node.get();
while (node) {
NamedNodeMap* attrs = node->attributes();
if (attrs)
languageAttribute = attrs->getAttributeItem(XMLNames::langAttr);
if (languageAttribute)
break;
node = node->parentNode();
}
if (!languageAttribute)
return BOOL_TO_VALUE_CAST false;
String langValue = languageAttribute->value();
while (true) {
if (equalIgnoringCase(langValue, lang))
return BOOL_TO_VALUE_CAST true;
// Remove suffixes one by one.
size_t index = langValue.reverseFind('-');
if (index == notFound)
break;
langValue = langValue.left(index);
}
return BOOL_TO_VALUE_CAST false;
}
Value FunLang::doEvaluate() const
{
String lang = arg(0)->evaluate().toString();
RefPtr<Node> langNode = 0;
Node* node = evaluationContext().node.get();
String xmsnsURI = node->lookupNamespaceURI("xms");
while (node) {
NamedAttrMap* attrs = node->attributes();
langNode = attrs->getNamedItemNS(xmsnsURI, "lang");
if (langNode)
break;
node = node->parentNode();
}
if (!langNode)
return false;
String langNodeValue = langNode->nodeValue();
// extract 'en' out of 'en-us'
int index = langNodeValue.find('-');
if (index != -1)
langNodeValue = langNodeValue.left(index);
return equalIgnoringCase(langNodeValue, lang);
}
Value FunLang::evaluate() const
{
String lang = arg(0)->evaluate().toString();
RefPtr<Node> langNode = 0;
Node* node = evaluationContext().node.get();
while (node) {
NamedAttrMap* attrs = node->attributes();
if (attrs)
langNode = attrs->getNamedItemNS(XMLNames::xmlNamespaceURI, "lang");
if (langNode)
break;
node = node->parentNode();
}
if (!langNode)
return false;
String langNodeValue = langNode->nodeValue();
while (true) {
if (equalIgnoringCase(langNodeValue, lang))
return true;
// Remove suffixes one by one.
int index = langNodeValue.reverseFind('-');
if (index == -1)
break;
langNodeValue = langNodeValue.left(index);
}
return false;
}
Value FunLang::evaluate() const
{
String lang = argument(0).evaluate().toString();
const Attribute* languageAttribute = nullptr;
Node* node = evaluationContext().node.get();
while (node) {
if (is<Element>(*node)) {
Element& element = downcast<Element>(*node);
if (element.hasAttributes())
languageAttribute = element.findAttributeByName(XMLNames::langAttr);
}
if (languageAttribute)
break;
node = node->parentNode();
}
if (!languageAttribute)
return false;
String langValue = languageAttribute->value();
while (true) {
if (equalIgnoringCase(langValue, lang))
return true;
// Remove suffixes one by one.
size_t index = langValue.reverseFind('-');
if (index == notFound)
break;
langValue = langValue.left(index);
}
return false;
}
Value VariableReference::evaluate() const
{
HashMap<String, String>& bindings = evaluationContext().variableBindings;
if (!bindings.contains(m_name))
// FIXME: Is this the right thing to do if an unknown variable is referenced?
return "";
return bindings.get(m_name);
}
Value FunName::evaluate() const
{
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeSet())
return "";
Node* node = a.toNodeSet().firstNode();
return node ? expandedName(node) : "";
}
return expandedName(evaluationContext().node.get());
}
Value FunNamespaceURI::evaluate() const
{
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeSet())
return "";
Node* node = a.toNodeSet().firstNode();
return node ? node->namespaceURI().string() : "";
}
return evaluationContext().node->namespaceURI().string();
}
Value FunName::evaluate() const
{
if (argumentCount() > 0) {
Value a = argument(0).evaluate();
if (!a.isNodeSet())
return emptyString();
Node* node = a.toNodeSet().firstNode();
return node ? expandedName(node) : emptyString();
}
return expandedName(evaluationContext().node.get());
}
Value FunNamespaceURI::evaluate() const
{
if (argumentCount() > 0) {
Value a = argument(0).evaluate();
if (!a.isNodeSet())
return emptyString();
Node* node = a.toNodeSet().firstNode();
return node ? node->namespaceURI().string() : emptyString();
}
return evaluationContext().node->namespaceURI().string();
}
Value FunName::doEvaluate() const
{
Node* node = 0;
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeVector() || a.toNodeVector().size() == 0)
return "";
node = a.toNodeVector()[0].get();
}
if (!node)
node = evaluationContext().node.get();
return node->prefix() + ":" + node->localName();
}
Value FunNamespaceURI::doEvaluate() const
{
Node* node = 0;
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeVector() || a.toNodeVector().size() == 0)
return "";
node = a.toNodeVector()[0].get();
}
if (!node)
node = evaluationContext().node.get();
return Value(node->namespaceURI());
}
Value FunLocalName::evaluate() const
{
Node* node = 0;
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeSet())
return "";
node = a.toNodeSet().firstNode();
if (!node)
return "";
}
if (!node)
node = evaluationContext().node.get();
return node->localName().string();
}
Value FunId::evaluate() const
{
Value a = argument(0).evaluate();
StringBuilder idList; // A whitespace-separated list of IDs
if (!a.isNodeSet())
idList.append(a.toString());
else {
for (auto& node : a.toNodeSet()) {
idList.append(stringValue(node.get()));
idList.append(' ');
}
}
TreeScope& contextScope = evaluationContext().node->treeScope();
NodeSet result;
HashSet<Node*> resultSet;
unsigned startPos = 0;
unsigned length = idList.length();
while (true) {
while (startPos < length && isWhitespace(idList[startPos]))
++startPos;
if (startPos == length)
break;
size_t endPos = startPos;
while (endPos < length && !isWhitespace(idList[endPos]))
++endPos;
// If there are several nodes with the same id, id() should return the first one.
// In WebKit, getElementById behaves so, too, although its behavior in this case is formally undefined.
Node* node = contextScope.getElementById(atomicSubstring(idList, startPos, endPos - startPos));
if (node && resultSet.add(node).isNewEntry)
result.append(node);
startPos = endPos;
}
result.markSorted(false);
return Value(WTFMove(result));
}
Value FunName::evaluate() const
{
Node* node = 0;
if (argCount() > 0) {
Value a = arg(0)->evaluate();
if (!a.isNodeSet())
return "";
node = a.toNodeSet().firstNode();
if (!node)
return "";
}
if (!node)
node = evaluationContext().node.get();
const AtomicString& prefix = node->prefix();
return prefix.isEmpty() ? node->localName().string() : prefix + ":" + node->localName();
}
