Var JavascriptError::NewErrorInstance(RecyclableObject* function, CallInfo callInfo, ...)
{
PROBE_STACK(function->GetScriptContext(), Js::Constants::MinStackDefault);
ARGUMENTS(args, callInfo);
ScriptContext* scriptContext = function->GetScriptContext();
JavascriptError* pError = scriptContext->GetLibrary()->CreateError();
// Process the arguments for IE specific behaviors for numbers and description
JavascriptString* descriptionString = nullptr;
bool hasNumber = false;
double number = 0;
if (args.Info.Count >= 3)
{
hasNumber = true;
number = JavascriptConversion::ToNumber(args[1], scriptContext);
// Get rid of this arg. NewInstance only expects a message arg.
args.Values++;
args.Info.Count--;
descriptionString = JavascriptConversion::ToString(args[1], scriptContext);
}
else if (args.Info.Count == 2)
{
if (!hasNumber)
{
descriptionString = JavascriptConversion::ToString(args[1], scriptContext);
}
}
else
{
hasNumber = true;
descriptionString = scriptContext->GetLibrary()->GetEmptyString();
}
Assert(descriptionString != nullptr);
if (hasNumber)
{
JavascriptOperators::InitProperty(pError, PropertyIds::number, JavascriptNumber::ToVarNoCheck(number, scriptContext));
pError->SetNotEnumerable(PropertyIds::number);
}
JavascriptOperators::SetProperty(pError, pError, PropertyIds::description, descriptionString, scriptContext);
pError->SetNotEnumerable(PropertyIds::description);
return JavascriptError::NewInstance(function, pError, callInfo, args);
}
Var JavascriptError::NewErrorInstance(RecyclableObject* function, CallInfo callInfo, ...)
{
PROBE_STACK(function->GetScriptContext(), Js::Constants::MinStackDefault);
ARGUMENTS(args, callInfo);
ScriptContext* scriptContext = function->GetScriptContext();
JavascriptError* pError = scriptContext->GetLibrary()->CreateError();
// Process the arguments for IE specific behaviors for numbers and description
JavascriptString* descriptionString = nullptr;
Var message;
bool hasNumber = false;
double number = 0;
if (args.Info.Count >= 3)
{
hasNumber = true;
number = JavascriptConversion::ToNumber(args[1], scriptContext);
message = args[2];
descriptionString = JavascriptConversion::ToString(message, scriptContext);
}
else if (args.Info.Count == 2)
{
message = args[1];
descriptionString = JavascriptConversion::ToString(message, scriptContext);
}
else
{
hasNumber = true;
message = scriptContext->GetLibrary()->GetUndefined();
descriptionString = scriptContext->GetLibrary()->GetEmptyString();
}
Assert(descriptionString != nullptr);
if (hasNumber)
{
JavascriptOperators::InitProperty(pError, PropertyIds::number, JavascriptNumber::ToVarNoCheck(number, scriptContext));
pError->SetNotEnumerable(PropertyIds::number);
}
JavascriptOperators::SetProperty(pError, pError, PropertyIds::description, descriptionString, scriptContext);
pError->SetNotEnumerable(PropertyIds::description);
Var newTarget = callInfo.Flags & CallFlags_NewTarget ? args.Values[args.Info.Count] : args[0];
return JavascriptError::NewInstance(function, pError, callInfo, newTarget, message);
}