private static Func <object, Document, int, SignatureHelpTriggerInfoData, CancellationToken, Task> CompileGetItemsAsyncWithUntypedResult()
{
var instanceParameter = Expression.Parameter(typeof(object));
var documentParameter = Expression.Parameter(typeof(Document));
var positionParameter = Expression.Parameter(typeof(int));
var triggerInfoParameter = Expression.Parameter(typeof(SignatureHelpTriggerInfoData));
var cancellationTokenParameter = Expression.Parameter(typeof(CancellationToken));
var instanceTyped = instanceParameter.Convert(RoslynTypes.ISignatureHelpProvider.AsType());
var triggerInfo = SignatureHelpTriggerInfoData.ToInternalTypeExpressionSlow(triggerInfoParameter);
var call = Expression.Call(
instanceTyped, RoslynTypes.ISignatureHelpProvider.GetMethod("GetItemsAsync"),
documentParameter, positionParameter, triggerInfo, cancellationTokenParameter
);
return(Expression.Lambda <Func <object, Document, int, SignatureHelpTriggerInfoData, CancellationToken, Task> >(
call, instanceParameter, documentParameter, positionParameter, triggerInfoParameter, cancellationTokenParameter
).Compile());
}
public async Task <SignatureHelpItemsData> GetItemsAsync(Document document, int position, SignatureHelpTriggerInfoData triggerInfo, CancellationToken cancellationToken)
{
var task = _getItemsAsyncWithUntypedResult(_provider, document, position, triggerInfo, cancellationToken);
await task.ConfigureAwait(false);
return(_convertGetItemsAsyncResult(task));
}
