v8::MaybeLocal<v8::Value> MainThreadDebugger::memoryInfo(v8::Isolate* isolate, v8::Local<v8::Context> context)
{
ExecutionContext* executionContext = toExecutionContext(context);
ASSERT_UNUSED(executionContext, executionContext);
ASSERT(executionContext->isDocument());
return toV8(MemoryInfo::create(), context->Global(), isolate);
}
static bool codeGenerationCheckCallbackInMainThread(v8::Local<v8::Context> context)
{
if (ExecutionContext* executionContext = toExecutionContext(context)) {
if (ContentSecurityPolicy* policy = toDocument(executionContext)->contentSecurityPolicy())
return policy->allowEval(ScriptState::from(context), ContentSecurityPolicy::SendReport, ContentSecurityPolicy::WillThrowException);
}
return false;
}
ExecutionContext* activeExecutionContext()
{
v8::Handle<v8::Context> context = v8::Isolate::GetCurrent()->GetCallingContext();
if (context.IsEmpty()) {
// Unfortunately, when processing script from a plug-in, we might not
// have a calling context. In those cases, we fall back to the
// entered context.
context = v8::Isolate::GetCurrent()->GetEnteredContext();
}
return toExecutionContext(context);
}
static Node* secondArgumentAsNode(const v8::FunctionCallbackInfo<v8::Value>& info)
{
if (info.Length() > 1) {
if (Node* node = V8Node::toImplWithTypeCheck(info.GetIsolate(), info[1]))
return node;
}
ExecutionContext* executionContext = toExecutionContext(info.GetIsolate()->GetCurrentContext());
if (executionContext->isDocument())
return toDocument(executionContext);
return nullptr;
}
AtomicString V8CustomXPathNSResolver::lookupNamespaceURI(const String& prefix) {
v8::Isolate* isolate = m_scriptState->isolate();
v8::Local<v8::Function> lookupNamespaceURIFunc;
v8::Local<v8::String> lookupNamespaceURIName =
v8AtomicString(isolate, "lookupNamespaceURI");
// Check if the resolver has a function property named lookupNamespaceURI.
v8::Local<v8::Value> lookupNamespaceURI;
if (m_resolver->Get(m_scriptState->context(), lookupNamespaceURIName)
.ToLocal(&lookupNamespaceURI) &&
lookupNamespaceURI->IsFunction())
lookupNamespaceURIFunc = v8::Local<v8::Function>::Cast(lookupNamespaceURI);
if (lookupNamespaceURIFunc.IsEmpty() && !m_resolver->IsFunction()) {
LocalFrame* frame =
toLocalDOMWindow(toDOMWindow(m_scriptState->context()))->frame();
if (frame && frame->host())
frame->console().addMessage(ConsoleMessage::create(
JSMessageSource, ErrorMessageLevel,
"XPathNSResolver does not have a lookupNamespaceURI method."));
return nullAtom;
}
// Catch exceptions from calling the namespace resolver.
v8::TryCatch tryCatch(isolate);
tryCatch.SetVerbose(true); // Print exceptions to console.
const int argc = 1;
v8::Local<v8::Value> argv[argc] = {v8String(isolate, prefix)};
v8::Local<v8::Function> function =
lookupNamespaceURIFunc.IsEmpty()
? v8::Local<v8::Function>::Cast(m_resolver)
: lookupNamespaceURIFunc;
v8::Local<v8::Value> retval;
// Eat exceptions from namespace resolver and return an empty string. This
// will most likely cause NamespaceError.
if (!V8ScriptRunner::callFunction(
function, toExecutionContext(m_scriptState->context()), m_resolver,
argc, argv, isolate)
.ToLocal(&retval))
return nullAtom;
TOSTRING_DEFAULT(V8StringResource<TreatNullAsNullString>, returnString,
retval, nullAtom);
return returnString;
}
ExecutionContext* ScriptState::executionContext() const
{
v8::HandleScope scope(m_isolate);
return toExecutionContext(context());
}