public ComHandle <EnvDTE80.FileCodeModel2, FileCodeModel> GetOrCreateFileCodeModel(
string filePath,
object parent
)
{
// First try
{
var cacheEntry = GetCacheEntry(filePath);
if (cacheEntry != null)
{
var comHandle = cacheEntry.Value.ComHandle;
if (comHandle != null)
{
return(comHandle.Value);
}
}
}
// Check that we know about this file!
var documentId = _state.Workspace.CurrentSolution
.GetDocumentIdsWithFilePath(filePath)
.Where(id => id.ProjectId == _projectId)
.FirstOrDefault();
if (documentId == null)
{
// Matches behavior of native (C#) implementation
throw Exceptions.ThrowENotImpl();
}
// Create object (outside of lock)
var newFileCodeModel = FileCodeModel.Create(
_state,
parent,
documentId,
new TextManagerAdapter()
);
var newCacheEntry = new CacheEntry(newFileCodeModel);
// Second try (object might have been added by another thread at this point!)
lock (_cacheGate)
{
var cacheEntry = GetCacheEntry(filePath);
if (cacheEntry != null)
{
var comHandle = cacheEntry.Value.ComHandle;
if (comHandle != null)
{
return(comHandle.Value);
}
}
// Note: Using the indexer here (instead of "Add") is relevant since the old
// WeakReference entry is likely still in the cache (with a Null target, of course)
_cache[filePath] = newCacheEntry;
return(newFileCodeModel);
}
}
public EnvDTE.FileCodeModel CreateFileCodeModel(SourceGeneratedDocument sourceGeneratedDocument)
{
// Unlike for "regular" documents, we make no effort to cache these between callers or hold them for longer lifetimes with
// events.
return(FileCodeModel.Create(GetCodeModelCache().State, parent: null, sourceGeneratedDocument.Id, isSourceGeneratorOutput: true, new TextManagerAdapter()).Handle);
}