/// <summary>
/// Gets the documentId in this solution with the specified syntax tree.
/// </summary>
public DocumentId GetDocumentId(SyntaxTree syntaxTree, ProjectId projectId)
{
if (syntaxTree != null)
{
// is this tree known to be associated with a document?
var documentId = DocumentState.GetDocumentIdForTree(syntaxTree);
if (documentId != null && (projectId == null || documentId.ProjectId == projectId))
{
// does this solution even have the document?
if (this.ContainsDocument(documentId))
{
return(documentId);
}
}
}
return(null);
}
internal Document GetDocument(SyntaxTree syntaxTree, ProjectId projectId)
{
if (syntaxTree != null)
{
// is this tree known to be associated with a document?
var docId = DocumentState.GetDocumentIdForTree(syntaxTree);
if (docId != null && (projectId == null || docId.ProjectId == projectId))
{
// does this solution even have the document?
var document = this.GetDocument(docId);
if (document != null)
{
// does this document really have the syntax tree?
if (document.TryGetSyntaxTree(out var documentTree) && documentTree == syntaxTree)
{
return(document);
}
}
}
}
return(null);
}
