bool JS4D::ThrowVErrorForException( ContextRef inContext, ExceptionRef inException)
{
bool errorThrown;
if ( (inException != NULL) && !JSValueIsUndefined( inContext, inException))
{
VTask::GetCurrent()->GetDebugContext().DisableUI();
bool bHasBeenAborted = false;
// first throw an error for javascript
VString description;
if (ValueToString( inContext, inException, description, /*outException*/ NULL))
{
if ( description. BeginsWith ( CVSTR ( "SyntaxError" ) ) && JSValueIsObject ( inContext, inException ) ) // Just to be super safe at the moment to avoid breaking everything
{
JSObjectRef jsExceptionObject = JSValueToObject ( inContext, inException, NULL );
if ( jsExceptionObject != 0 )
{
JSStringRef jsLine = JSStringCreateWithUTF8CString ( "line" );
if ( JSObjectHasProperty ( inContext, jsExceptionObject, jsLine ) )
{
JSValueRef jsValLine = JSObjectGetProperty ( inContext, jsExceptionObject, jsLine, NULL );
if ( jsValLine != 0 )
{
double nLine = JSValueToNumber( inContext, jsValLine, NULL );
VString vstrLine ( "Error on line " );
vstrLine. AppendReal ( nLine );
vstrLine. AppendCString ( ". " );
description. Insert ( vstrLine, 1 );
}
}
JSStringRelease ( jsLine );
}
}
else if ( description. Find ( CVSTR ( "Error: Execution aborted by caller." ) ) > 0 && JSValueIsObject ( inContext, inException ) )
bHasBeenAborted = true;
if ( !bHasBeenAborted )
{
StThrowError<> error( MAKE_VERROR( 'JS4D', 1));
error->SetString( "error_description", description);
}
}
VTask::GetCurrent()->GetDebugContext().EnableUI();
errorThrown = !bHasBeenAborted;
}
else
{
errorThrown = false;
}
return errorThrown;
}
bool VJSGlobalContext::EvaluateScript( const VString& inScript, const VURL *inSource, VValueSingle **outResult, bool inJSONresult ) const
{
VJSContext context( fContext);
Use();
VJSValue result( fContext, NULL);
JS4D::ExceptionRef exception = NULL;
bool ok = context.EvaluateScript( inScript, inSource, &result, &exception);
// first throw an error for javascript if necessary
if (JS4D::ThrowVErrorForException( fContext, exception))
{
xbox_assert( !ok);
// then rethrow an error to explain wat we were doing
VTask::GetCurrent()->GetDebugContext().DisableUI();
{
VString url;
if (inSource != NULL)
inSource->GetAbsoluteURL( url, false);
if (!url.IsEmpty())
{
StThrowError<> error( MAKE_VERROR( 'JS4D', 2));
error->SetString( "url", url);
error->SetString( "error_description", CVSTR( "Error evaluating javascript {url}"));
}
else
{
StThrowError<> error( MAKE_VERROR( 'JS4D', 3));
error->SetString( "error_description", CVSTR( "Error evaluating javascript"));
}
}
VTask::GetCurrent()->GetDebugContext().EnableUI();
if (outResult != NULL)
*outResult = NULL;
}
else
{
xbox_assert( ok);
if (outResult != NULL)
if ( inJSONresult )
{
VJSJSON stringifier( fContext );
VString* ptStr = new VString;
// The "result" value's fValue is initialized to 0 when a script is aborted using the JS debugger. In this case js core crashes while stringifying, thus the if-else
// The if-else can be moved directly into ::Stringify if "null" is acceptable as a generic return value
if ( result. IsNull ( ) )
ptStr-> AppendCString ( "null" );
else
stringifier.Stringify( result, *ptStr );
*outResult = ptStr;
}
else
*outResult = result.CreateVValue( NULL);
}
Unuse();
return ok;
}
