聖誕發佈新版github.com/MaskRay/ccls

  • workspace/didChangeWatchedFiles works (tested on VSCode and coc.nvim) and file deletion will remove index symbols
  • .ccls enhancement #171 added new directives %compile_commands.json %h %hpp %objective-c %objective-cpp
  • -v=1 dumps command line options of files for parsing
  • fuzzy_match: when the completion filter begins with a letter, builtin macros prefixed with an underscore will not be returned
  • Support textDocument/declaration and LocationLink[] return types.
  • Properly handle "exit" #159
  • Support signatureHelp.signatureInformationparameterInformation.labelOffsetSupport cf. github.com/Microsoft/la
  • codeAction: fixed an incompatibility issue with VSCode

Completion

  • More precise diagnostics/completion: an included file that has been changed does not need to be saved to take effect.
  • Decreased Content-Length: from 32K to 25K for some cases
  • On clang < 8, fixed #include < completion for -I dir
  • Macros are categorized as Text, instead of Interface
  • Refactor and rename (clang_complete.cc -> sema_manager.cc)
  • C++17 deduction guide #173

Others

  • Support multiple -init=: "initializationOptions" from client are applied first, then -init=. Scalar options will be overridden while arrays will get concatenated

重點是

  • 更加精確的diagnostics/completion(針對#include中的依賴unsaved buffers)，之前cquery/ccls的做法都不好
  • 檔案刪除、重命名：之前這兩個專案都不會清理掉刪除的檔案 #170
  • 159 是之前LSP exit觸發exit(0)(中斷一個正在寫cache的indexer thread下次可能讀不出來，但非常罕見)
  • 補全的其他大大小小改進
  • 如果一個textDocument的索引未被加載，request (textDocument/documentHighlight textDocument/hover等)會報告not indexed，顯示在echo area，比較惱人。我在pipeline.cc引入了一個backlog解決這一問題，詳見github.com/MaskRay/ccls。code lens可以用(add-hook lsp-after-open-hook #ccls-code-lens-mode)而不需要(run-at-time 0.5 nil #ccls-code-lens-mode)了
  • 增強.ccls和compile_commands.json的協作，詳見Paul Smith的分析github.com/MaskRay/ccls

其他

  • ccls/wiki/Emacs拆分成wiki/lsp-mode和wiki/egot，後者還比較簡陋(歡迎貢獻)
  • eglot支援workspace/didChangeWatchedFiles，lsp-mode尚未
  • 我給lsp-mode加了LocationLink支援，targetSelectRange可以指向名字，而targetRange指向輪廓。mouse hover時可以有可視效果(對於Emacs用途不大)
  • xref.el的xref-file-location並非表示interface Range的良好選擇，因爲僅能表示點(line column)，不能表示區間。lsp-ui-peek裏需要區間信息highlight文本，無法良好地用xref表達，在lsp-ui-peek裏的實現有點噁心(希望有人能改好)

;; xref.el
(defclass xref-file-location (xref-location)
((file :type string :initarg :file)
(line :type fixnum :initarg :line :reader xref-location-line)
(column :type fixnum :initarg :column :reader xref-file-location-column))
:documentation "A file location is a file/line/column triple.
Line numbers start from 1 and columns from 0.")

;; lsp-ui-peek.el
(-if-let (uri (gethash "uri" x))
(-let (((&hash "start" (&hash "line" "character")) (gethash "range" x)))
(lsp-ui-peek--goto-xref `(:file ,(lsp--uri-to-path uri) :line ,line :column ,character)))
(-let (((&hash "start" (&hash "line" "character")) (or (gethash "targetSelectionRange" x) (gethash "targetRange" x))))
(lsp-ui-peek--goto-xref `(:file ,(lsp--uri-to-path (gethash "targetUri" x)) :line ,line :column ,character))))

  • 非常希望看到有人能把lsp-mode的hash tables+string keys ((gethash "range" xx))都改成plists + keyword keys ((plist-get xx :range))，這樣會讓我感覺還是有希望的……
  • code lens我另外也在等待eglot的處理：github.com/joaotavora/e，lsp-mode中的issue是github.com/emacs-lsp/ls

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