private async Task <RazorCodeDocument> GetGeneratedOutputInitializationTaskCore(ProjectSnapshot project, DocumentSnapshot document)
{
var tagHelpers = await project.GetTagHelpersAsync().ConfigureAwait(false);
var imports = await GetImportsAsync(project, document);
if (_older != null && _older.IsResultAvailable)
{
var tagHelperDifference = new HashSet <TagHelperDescriptor>(TagHelperDescriptorComparer.Default);
tagHelperDifference.UnionWith(_older._tagHelpers);
tagHelperDifference.SymmetricExceptWith(tagHelpers);
var importDifference = new HashSet <ImportItem>();
importDifference.UnionWith(_older._imports);
importDifference.SymmetricExceptWith(imports);
if (tagHelperDifference.Count == 0 && importDifference.Count == 0)
{
// We can use the cached result.
var result = _older._task.Result;
// Drop reference so it can be GC'ed
_older = null;
// Cache the tag helpers and imports so the next version can use them
_tagHelpers = tagHelpers;
_imports = imports;
return(result);
}
}
// Drop reference so it can be GC'ed
_older = null;
// Cache the tag helpers and imports so the next version can use them
_tagHelpers = tagHelpers;
_imports = imports;
var importSources = new List <RazorSourceDocument>();
foreach (var item in imports)
{
var sourceDocument = await GetRazorSourceDocumentAsync(item.Import);
importSources.Add(sourceDocument);
}
var documentSource = await GetRazorSourceDocumentAsync(document);
var projectEngine = project.GetProjectEngine();
return(projectEngine.ProcessDesignTime(documentSource, importSources, tagHelpers));
}
private async Task <RazorCodeDocument> GetGeneratedOutputInitializationTaskCore(ProjectSnapshot project, DocumentSnapshot document)
{
var tagHelpers = await project.GetTagHelpersAsync().ConfigureAwait(false);
if (_older != null && _older.IsResultAvailable)
{
var difference = new HashSet <TagHelperDescriptor>(TagHelperDescriptorComparer.Default);
difference.UnionWith(_older._tagHelpers);
difference.SymmetricExceptWith(tagHelpers);
if (difference.Count == 0)
{
// We can use the cached result.
var result = _older._task.Result;
// Drop reference so it can be GC'ed
_older = null;
// Cache the tag helpers so the next version can use them
_tagHelpers = tagHelpers;
return(result);
}
}
// Drop reference so it can be GC'ed
_older = null;
// Cache the tag helpers so the next version can use them
_tagHelpers = tagHelpers;
var projectEngine = project.GetProjectEngine();
var projectItem = projectEngine.FileSystem.GetItem(document.FilePath);
return(projectItem == null ? null : projectEngine.ProcessDesignTime(projectItem));
}