JSCustomXPathNSResolver.cpp [plain text]
#include "config.h"
#include "JSCustomXPathNSResolver.h"
#include "CommonVM.h"
#include "DOMWindow.h"
#include "Document.h"
#include "Frame.h"
#include "JSDOMExceptionHandling.h"
#include "JSDOMWindowCustom.h"
#include "JSExecState.h"
#include "Page.h"
#include "PageConsoleClient.h"
#include <JavaScriptCore/JSLock.h>
#include <wtf/Ref.h>
namespace WebCore {
using namespace JSC;
ExceptionOr<Ref<JSCustomXPathNSResolver>> JSCustomXPathNSResolver::create(JSGlobalObject& lexicalGlobalObject, JSValue value)
{
if (value.isUndefinedOrNull())
return Exception { TypeError };
auto* resolverObject = value.getObject();
if (!resolverObject)
return Exception { TypeMismatchError };
VM& vm = lexicalGlobalObject.vm();
return adoptRef(*new JSCustomXPathNSResolver(vm, resolverObject, asJSDOMWindow(&lexicalGlobalObject)));
}
JSCustomXPathNSResolver::JSCustomXPathNSResolver(VM& vm, JSObject* customResolver, JSDOMWindow* globalObject)
: m_customResolver(vm, customResolver)
, m_globalObject(vm, globalObject)
{
}
JSCustomXPathNSResolver::~JSCustomXPathNSResolver() = default;
String JSCustomXPathNSResolver::lookupNamespaceURI(const String& prefix)
{
ASSERT(m_customResolver);
JSLockHolder lock(commonVM());
JSGlobalObject* lexicalGlobalObject = m_globalObject.get();
VM& vm = lexicalGlobalObject->vm();
JSValue function = m_customResolver->get(lexicalGlobalObject, Identifier::fromString(vm, "lookupNamespaceURI"));
CallData callData;
CallType callType = getCallData(vm, function, callData);
if (callType == CallType::None) {
callType = m_customResolver->methodTable(vm)->getCallData(m_customResolver.get(), callData);
if (callType == CallType::None) {
if (PageConsoleClient* console = m_globalObject->wrapped().console())
console->addMessage(MessageSource::JS, MessageLevel::Error, "XPathNSResolver does not have a lookupNamespaceURI method."_s);
return String();
}
function = m_customResolver.get();
}
Ref<JSCustomXPathNSResolver> protectedThis(*this);
MarkedArgumentBuffer args;
args.append(jsStringWithCache(lexicalGlobalObject, prefix));
ASSERT(!args.hasOverflowed());
NakedPtr<JSC::Exception> exception;
JSValue retval = JSExecState::call(lexicalGlobalObject, function, callType, callData, m_customResolver.get(), args, exception);
String result;
if (exception)
reportException(lexicalGlobalObject, exception);
else {
if (!retval.isUndefinedOrNull())
result = retval.toWTFString(lexicalGlobalObject);
}
return result;
}
}