/// <summary>
/// Tries to create an instance of <see cref="NuGetProject"/> by calling registered
/// providers in predefined order.
/// </summary>
/// <param name="vsProjectAdapter">A project adapter.</param>
/// <param name="context">Project context</param>
/// <param name="result">New project instance when <code>true</code> is returned.
/// Otherwise - <code>null</code>.</param>
/// <returns><code>true</code> when new project instance has been successfully created.</returns>
public async Task <NuGetProject> TryCreateNuGetProjectAsync(
IVsProjectAdapter vsProjectAdapter,
ProjectProviderContext context)
{
Assumes.Present(vsProjectAdapter);
Assumes.Present(context);
await _threadingService.JoinableTaskFactory.SwitchToMainThreadAsync();
if (vsProjectAdapter.VsHierarchy != null &&
VsHierarchyUtility.IsCPSCapabilityComplaint(vsProjectAdapter.VsHierarchy))
{
// Lazy load the CPS enabled JoinableTaskFactory for the UI.
NuGetUIThreadHelper.SetJoinableTaskFactoryFromService(ProjectServiceAccessor.Value as IProjectServiceAccessor);
}
var exceptions = new List <Exception>();
foreach (var provider in _providers)
{
try
{
var nuGetProject = await provider.TryCreateNuGetProjectAsync(
vsProjectAdapter,
context,
forceProjectType : false);
if (nuGetProject != null)
{
return(nuGetProject);
}
}
catch (Exception e)
{
// Ignore failures. If this method returns null, the problem falls
// into one of the other NuGet project types.
exceptions.Add(e);
}
}
exceptions.ForEach(e => _logger.LogError(e.ToString()));
return(null);
}
/// <summary>
/// Creates an instance of <see cref="NuGetProject"/> of desired type.
/// </summary>
/// <typeparam name="TProject">Type of project to create.</typeparam>
/// <param name="vsProjectAdapter">Project adapter</param>
/// <param name="optionalContext">Optional context for project creation. Not all of providers require it.</param>
/// <returns>Instance of <see cref="NuGetProject"/> or null if failed.</returns>
/// <remarks>The factory will identify a provider corresponding to given project type and will attempt to force create the project of desired type.</remarks>
public async Task <TProject> CreateNuGetProjectAsync <TProject>(
IVsProjectAdapter vsProjectAdapter,
ProjectProviderContext optionalContext = null)
where TProject : NuGetProject
{
Assumes.Present(vsProjectAdapter);
await _threadingService.JoinableTaskFactory.SwitchToMainThreadAsync();
var provider = _providers
.FirstOrDefault(p => typeof(TProject).TypeHandle.Equals(p.ProjectType));
if (provider == null)
{
return(null);
}
if (vsProjectAdapter.VsHierarchy != null &&
VsHierarchyUtility.IsCPSCapabilityComplaint(vsProjectAdapter.VsHierarchy))
{
// Lazy load the CPS enabled JoinableTaskFactory for the UI.
NuGetUIThreadHelper.SetJoinableTaskFactoryFromService(ProjectServiceAccessor.Value as IProjectServiceAccessor);
}
try
{
var nuGetProject = await provider.TryCreateNuGetProjectAsync(
vsProjectAdapter,
optionalContext,
forceProjectType : true);
if (nuGetProject != null)
{
return(nuGetProject as TProject);
}
}
catch (Exception e)
{
_logger.LogError(e.ToString());
}
return(null);
}