JSValue* JSXPathResultPrototypeFunction::callAsFunction(ExecState* exec, JSObject* thisObj, const List& args)
{
if (!thisObj->inherits(&JSXPathResult::info))
return throwError(exec, TypeError);
XPathResult* imp = static_cast<XPathResult*>(static_cast<JSXPathResult*>(thisObj)->impl());
switch (id) {
case JSXPathResult::IterateNextFuncNum: {
ExceptionCode ec = 0;
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->iterateNext(ec)));
setDOMException(exec, ec);
return result;
}
case JSXPathResult::SnapshotItemFuncNum: {
ExceptionCode ec = 0;
bool indexOk;
unsigned index = args[0]->toInt32(exec, indexOk);
if (!indexOk) {
setDOMException(exec, TYPE_MISMATCH_ERR);
return jsUndefined();
}
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->snapshotItem(index, ec)));
setDOMException(exec, ec);
return result;
}
}
return 0;
}
XPathResult* XPathExpression::evaluate(Node* contextNode,
unsigned short type,
const ScriptValue&,
ExceptionState& exceptionState) {
if (!isValidContextNode(contextNode)) {
exceptionState.throwDOMException(
NotSupportedError, "The node provided is '" + contextNode->nodeName() +
"', which is not a valid context node type.");
return nullptr;
}
EvaluationContext evaluationContext(*contextNode);
XPathResult* result = XPathResult::create(
evaluationContext, m_topExpression->evaluate(evaluationContext));
if (evaluationContext.hadTypeConversionError) {
// It is not specified what to do if type conversion fails while evaluating
// an expression.
exceptionState.throwDOMException(
SyntaxError, "Type conversion failed while evaluating the expression.");
return nullptr;
}
if (type != XPathResult::kAnyType) {
result->convertTo(type, exceptionState);
if (exceptionState.hadException())
return nullptr;
}
return result;
}
JSValue jsXPathResultResultType(ExecState* exec, JSValue slotBase, const Identifier&)
{
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(slotBase));
UNUSED_PARAM(exec);
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
JSValue result = jsNumber(imp->resultType());
return result;
}
JSValue jsXPathResultInvalidIteratorState(ExecState* exec, JSValue slotBase, const Identifier&)
{
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(slotBase));
UNUSED_PARAM(exec);
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
JSValue result = jsBoolean(imp->invalidIteratorState());
return result;
}
JSValue jsXPathResultBooleanValue(ExecState* exec, JSValue slotBase, const Identifier&)
{
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(slotBase));
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
JSC::JSValue result = jsBoolean(imp->booleanValue(ec));
setDOMException(exec, ec);
return result;
}
JSValue jsXPathResultSingleNodeValue(ExecState* exec, JSValue slotBase, const Identifier&)
{
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(slotBase));
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
JSC::JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->singleNodeValue(ec)));
setDOMException(exec, ec);
return result;
}
JSValue jsXPathResultSnapshotLength(ExecState* exec, JSValue slotBase, const Identifier&)
{
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(slotBase));
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
JSC::JSValue result = jsNumber(imp->snapshotLength(ec));
setDOMException(exec, ec);
return result;
}
nsINode*
nsXMLBindingValues::GetNodeAssignmentFor(nsXULTemplateResultXML* aResult,
nsXMLBinding* aBinding,
int32_t aIndex)
{
XPathResult* result = GetAssignmentFor(aResult, aBinding, aIndex,
XPathResult::FIRST_ORDERED_NODE_TYPE);
ErrorResult rv;
return result ? result->GetSingleNodeValue(rv) : nullptr;
}
static v8::Handle<v8::Value> snapshotLengthAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.XPathResult.snapshotLength._get");
XPathResult* imp = V8XPathResult::toNative(info.Holder());
ExceptionCode ec = 0;
unsigned v = imp->snapshotLength(ec);
if (UNLIKELY(ec)) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
return v8::Integer::NewFromUnsigned(v);
}
static v8::Handle<v8::Value> singleNodeValueAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.XPathResult.singleNodeValue._get");
XPathResult* imp = V8XPathResult::toNative(info.Holder());
ExceptionCode ec = 0;
RefPtr<Node> v = imp->singleNodeValue(ec);
if (UNLIKELY(ec)) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
return toV8(v.release());
}
static v8::Handle<v8::Value> booleanValueAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.XPathResult.booleanValue._get");
XPathResult* imp = V8XPathResult::toNative(info.Holder());
ExceptionCode ec = 0;
bool v = imp->booleanValue(ec);
if (UNLIKELY(ec)) {
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
return v8Boolean(v);
}
JSValue* jsXPathResultPrototypeFunctionIterateNext(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSXPathResult::s_info))
return throwError(exec, TypeError);
JSXPathResult* castedThisObj = static_cast<JSXPathResult*>(thisValue);
XPathResult* imp = static_cast<XPathResult*>(castedThisObj->impl());
ExceptionCode ec = 0;
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->iterateNext(ec)));
setDOMException(exec, ec);
return result;
}
JSValue* jsXPathResultPrototypeFunctionSnapshotItem(ExecState* exec, JSObject*, JSValue* thisValue, const ArgList& args)
{
if (!thisValue->isObject(&JSXPathResult::s_info))
return throwError(exec, TypeError);
JSXPathResult* castedThisObj = static_cast<JSXPathResult*>(thisValue);
XPathResult* imp = static_cast<XPathResult*>(castedThisObj->impl());
ExceptionCode ec = 0;
unsigned index = args[0]->toInt32(exec);
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->snapshotItem(index, ec)));
setDOMException(exec, ec);
return result;
}
EncodedJSValue JSC_HOST_CALL jsXPathResultPrototypeFunctionIterateNext(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
if (!thisValue.inherits(&JSXPathResult::s_info))
return throwVMTypeError(exec);
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(thisValue));
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
ExceptionCode ec = 0;
JSC::JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->iterateNext(ec)));
setDOMException(exec, ec);
return JSValue::encode(result);
}
static v8::Handle<v8::Value> iterateNextCallback(const v8::Arguments& args)
{
INC_STATS("DOM.XPathResult.iterateNext");
XPathResult* imp = V8XPathResult::toNative(args.Holder());
ExceptionCode ec = 0;
{
RefPtr<Node> result = imp->iterateNext(ec);
if (UNLIKELY(ec))
goto fail;
return toV8(result.release());
}
fail:
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
static v8::Handle<v8::Value> snapshotItemCallback(const v8::Arguments& args)
{
INC_STATS("DOM.XPathResult.snapshotItem");
XPathResult* imp = V8XPathResult::toNative(args.Holder());
ExceptionCode ec = 0;
{
EXCEPTION_BLOCK(unsigned, index, toUInt32(args[0]));
RefPtr<Node> result = imp->snapshotItem(index, ec);
if (UNLIKELY(ec))
goto fail;
return toV8(result.release());
}
fail:
V8Proxy::setDOMException(ec);
return v8::Handle<v8::Value>();
}
void
nsXMLBindingValues::GetStringAssignmentFor(nsXULTemplateResultXML* aResult,
nsXMLBinding* aBinding,
int32_t aIndex,
nsAString& aValue)
{
XPathResult* result = GetAssignmentFor(aResult, aBinding, aIndex,
XPathResult::STRING_TYPE);
if (result) {
ErrorResult rv;
result->GetStringValue(aValue, rv);
} else {
aValue.Truncate();
}
}
EncodedJSValue JSC_HOST_CALL jsXPathResultPrototypeFunctionSnapshotItem(ExecState* exec)
{
JSValue thisValue = exec->hostThisValue();
if (!thisValue.inherits(&JSXPathResult::s_info))
return throwVMTypeError(exec);
JSXPathResult* castedThis = static_cast<JSXPathResult*>(asObject(thisValue));
XPathResult* imp = static_cast<XPathResult*>(castedThis->impl());
ExceptionCode ec = 0;
unsigned index(exec->argument(0).toUInt32(exec));
if (exec->hadException())
return JSValue::encode(jsUndefined());
JSC::JSValue result = toJS(exec, castedThis->globalObject(), WTF::getPtr(imp->snapshotItem(index, ec)));
setDOMException(exec, ec);
return JSValue::encode(result);
}
VXPathResult * XPathContext::evaluate(string xpath) throw (invalid_argument) {
//-- Evaluate
xmlXPathObjectPtr results = xmlXPathEvalExpression((const xmlChar*)xpath.c_str(),this->xpathCtx);
if (results == NULL) {
//-- Return error
stringstream ss;
ss << "Could not evaluate XPATH expression /"<<xpath<<"/ failed: " << (this->xpathCtx->lastError.message);
throw invalid_argument(ss.str());
}
//-- Fill up results
//--------------------
XPathResult * result = new XPathResult();
unsigned int nodesetSize = results->nodesetval ? results->nodesetval->nodeNr : 0;
for (unsigned int i=0;i<nodesetSize ; i++) {
// Get Node Pointer
xmlNodePtr node = results->nodesetval->nodeTab[i];
// Convert to Object
VDOMNode * nodeObject = DOMNode::toNode(node,this->document);
if (nodeObject!=NULL)
result->getNodeList().push_back(nodeObject);
}
//-- Free
xmlXPathFreeObject(results);
return result;
}
void MainThreadDebugger::xpathSelectorCallback(
const v8::FunctionCallbackInfo<v8::Value>& info) {
if (info.Length() < 1)
return;
String selector = toCoreStringWithUndefinedOrNullCheck(info[0]);
if (selector.isEmpty())
return;
Node* node = secondArgumentAsNode(info);
if (!node || !node->isContainerNode())
return;
ExceptionState exceptionState(ExceptionState::ExecutionContext, "$x",
"CommandLineAPI", info.Holder(),
info.GetIsolate());
XPathResult* result = XPathEvaluator::create()->evaluate(
selector, node, nullptr, XPathResult::kAnyType, ScriptValue(),
exceptionState);
if (exceptionState.hadException() || !result)
return;
if (result->resultType() == XPathResult::kNumberType) {
info.GetReturnValue().Set(toV8(result->numberValue(exceptionState),
info.Holder(), info.GetIsolate()));
} else if (result->resultType() == XPathResult::kStringType) {
info.GetReturnValue().Set(toV8(result->stringValue(exceptionState),
info.Holder(), info.GetIsolate()));
} else if (result->resultType() == XPathResult::kBooleanType) {
info.GetReturnValue().Set(toV8(result->booleanValue(exceptionState),
info.Holder(), info.GetIsolate()));
} else {
v8::Isolate* isolate = info.GetIsolate();
v8::Local<v8::Context> context = isolate->GetCurrentContext();
v8::Local<v8::Array> nodes = v8::Array::New(isolate);
size_t index = 0;
while (Node* node = result->iterateNext(exceptionState)) {
if (exceptionState.hadException())
return;
if (!createDataPropertyInArray(
context, nodes, index++,
toV8(node, info.Holder(), info.GetIsolate()))
.FromMaybe(false))
return;
}
info.GetReturnValue().Set(nodes);
}
}
JSValue* JSXPathResult::getValueProperty(ExecState* exec, int token) const
{
switch (token) {
case ResultTypeAttrNum: {
XPathResult* imp = static_cast<XPathResult*>(impl());
return jsNumber(exec, imp->resultType());
}
case NumberValueAttrNum: {
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(impl());
KJS::JSValue* result = jsNumber(exec, imp->numberValue(ec));
setDOMException(exec, ec);
return result;
}
case StringValueAttrNum: {
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(impl());
KJS::JSValue* result = jsString(exec, imp->stringValue(ec));
setDOMException(exec, ec);
return result;
}
case BooleanValueAttrNum: {
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(impl());
KJS::JSValue* result = jsBoolean(imp->booleanValue(ec));
setDOMException(exec, ec);
return result;
}
case SingleNodeValueAttrNum: {
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(impl());
KJS::JSValue* result = toJS(exec, WTF::getPtr(imp->singleNodeValue(ec)));
setDOMException(exec, ec);
return result;
}
case InvalidIteratorStateAttrNum: {
XPathResult* imp = static_cast<XPathResult*>(impl());
return jsBoolean(imp->invalidIteratorState());
}
case SnapshotLengthAttrNum: {
ExceptionCode ec = 0;
XPathResult* imp = static_cast<XPathResult*>(impl());
KJS::JSValue* result = jsNumber(exec, imp->snapshotLength(ec));
setDOMException(exec, ec);
return result;
}
case ConstructorAttrNum:
return getConstructor(exec);
}
return 0;
}
static v8::Handle<v8::Value> resultTypeAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.XPathResult.resultType._get");
XPathResult* imp = V8XPathResult::toNative(info.Holder());
return v8::Integer::New(imp->resultType());
}
int main( )
{
try {
// Initialize Xerces and retrieve a DOMImplementation.
XercesInitializer init;
DOMImplementation* impl =
DOMImplementationRegistry::getDOMImplementation(
fromNative("LS").c_str( )
);
if (impl == 0) {
cout << "couldn't create DOM implementation\n";
return EXIT_FAILURE;
}
// Construct a DOMBuilder to parse animals.xml.
DOMPtr<DOMBuilder> parser =
static_cast<DOMImplementationLS*>(impl)->
createDOMBuilder(
DOMImplementationLS::MODE_SYNCHRONOUS, 0
);
CircusErrorHandler err;
parser->setErrorHandler(&err);
// Parse animals.xml.
DOMDocument* doc =
parser->parseURI("animals.xml");
DOMElement* animalList = doc->getDocumentElement( );
// Create XPath expression.
auto_ptr<XPathEvaluator>
evaluator(XPathEvaluator::createEvaluator( ));
auto_ptr<XPathNSResolver>
resolver(evaluator->createNSResolver(animalList));
auto_ptr<XPathExpression>
xpath(
evaluator->createExpression(
fromNative(
"animalList/animal[child::name='Herby']"
).c_str( ),
resolver.get( )
)
);
auto_ptr<XPathEvaluator> evaluator(XPathEvaluator::createEvaluator( ));
auto_ptr<XPathNSResolver> resolver(evaluator->createNSResolver(animalList));
auto_ptr<XPathExpression> xpath(
evaluator->createExpression(
fromNative("animalList/animal[child::name='Herby']").c_str( ),
resolver.get( )
));
// Evaluate the expression.
XPathResult* result =
xpath->evaluate(
doc,
XPathResult::ORDERED_NODE_ITERATOR_TYPE,
0
);
DOMNode* herby;
if (herby = result->iterateNext( )) {
animalList->removeChild(herby);
herby->release( ); // optional.
}
// Construct a DOMWriter to save animals.xml.
DOMPtr<DOMWriter> writer =
static_cast<DOMImplementationLS*>(impl)->createDOMWriter( );
writer->setErrorHandler(&err);
// Save animals.xml.
LocalFileFormatTarget file("circus.xml");
writer->writeNode(&file, *animalList);
} catch (const DOMException& e) {
cout << toNative(e.getMessage( )) << "\n";
return EXIT_FAILURE;
} catch (const XPathException &e) {
cout << e.getString( ) << "\n";
return EXIT_FAILURE;
} catch (const exception& e) {
cout << e.what( ) << "\n";
return EXIT_FAILURE;
}
}
static v8::Handle<v8::Value> invalidIteratorStateAttrGetter(v8::Local<v8::String> name, const v8::AccessorInfo& info)
{
INC_STATS("DOM.XPathResult.invalidIteratorState._get");
XPathResult* imp = V8XPathResult::toNative(info.Holder());
return v8Boolean(imp->invalidIteratorState());
}
