internal static async Task <ImmutableDictionary <string, DesignerAttributeDocumentData> > TryAnalyzeProjectInCurrentProcessAsync(
Project project, CancellationToken cancellationToken)
{
var projectVersion = await project.GetDependentVersionAsync(cancellationToken).ConfigureAwait(false);
var semanticVersion = await project.GetDependentSemanticVersionAsync(cancellationToken).ConfigureAwait(false);
// Get whatever data we've current persisted.
var designerAttributeData = await DesignerAttributeProjectData.ReadAsync(
project, cancellationToken).ConfigureAwait(false);
// If we have no persisted data, or the persisted data is for a previous version of
// the project, then compute the results for the current project snapshot.
if (designerAttributeData == null ||
!VersionStamp.CanReusePersistedVersion(semanticVersion, designerAttributeData.SemanticVersion))
{
designerAttributeData = await ComputeAndPersistDesignerAttributeProjectDataAsync(
project, semanticVersion, cancellationToken).ConfigureAwait(false);
}
return(designerAttributeData.PathToDocumentData);
}
private static async Task <DesignerAttributeProjectData> ComputeAndPersistDesignerAttributeProjectDataAsync(
Project project, VersionStamp semanticVersion, CancellationToken cancellationToken)
{
var service = project.LanguageServices.GetService <IDesignerAttributeService>();
var tasks = project.Documents.Select(
d => service.ScanDesignerAttributesAsync(d, cancellationToken)).ToArray();
await Task.WhenAll(tasks).ConfigureAwait(false);
var builder = ImmutableDictionary.CreateBuilder <string, DesignerAttributeDocumentData>();
foreach (var task in tasks)
{
var result = await task.ConfigureAwait(false);
builder[result.FilePath] = result;
}
var data = new DesignerAttributeProjectData(semanticVersion, builder.ToImmutable());
await data.PersistAsync(project, cancellationToken).ConfigureAwait(false);
return(data);
}