Consider caching Alias & Command information

On every textDocument/references request and every textDocument/codeLens request, we rely on the pipeline to get the current available.

This is time consuming and bottlenecked by the pipeline thread. As such, we should consider caching this result based on the state of the Integrated Console.

Coming off the the back of #980, one of the patterns I liked was the ability to tell if something was run in the PSIC using PSRL’s ENTER handler and F8’s handler.

Bringing this concept in, we can use it as a “Dirty” check where we cache aliases and command info results, and only refresh the cache when the PSIC is Dirty.

That way, for example, our textDocument/references request and textDocument/codeLens request only rely on the pipeline once the cache is Dirty and an otherwise run unblocked giving us a perf improvement.

src/PowerShellEditorServices/Language/LanguageService.cs の327行目付近にあるリンクされた検索から始め、次に #980 で説明されている Integrated Console の動作を確認します。PSRL の ENTER ハンドラーと F8 のハンドラーも含めて確認してください。PSIC が dirty のときにエイリアス情報とコマンド情報がどのようにキャッシュされ、無効化されるかを定義します。完了条件は、キャッシュの更新が必要な場合にのみ参照と codeLens のリクエストがパイプラインを使用することです。