;;; FG42 --- The mighty editor for the emacsians -*- lexical-binding: t; -*-
;;
;; Copyright (c) 2010-2024 Sameer Rahmani & Contributors
;;
;; Author: Sameer Rahmani <lxsameer@gnu.org>
;; URL: https://devheroes.codes/FG42/FG42
;; Version: 3.0.0
;;
;; This program is free software; you can redistribute it and/or modify
;; it under the terms of the GNU General Public License as published by
;; the Free Software Foundation, either version 3 of the License, or
;; (at your option) any later version.
;;
;; This program is distributed in the hope that it will be useful,
;; but WITHOUT ANY WARRANTY; without even the implied warranty of
;; MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
;; GNU General Public License for more details.
;;
;; You should have received a copy of the GNU General Public License
;; along with this program.  If not, see <http://www.gnu.org/licenses/>.
;;
;;; Commentary:
;;; Code:
(eval-when-compile
  (require 'fpkg))

(defvar fg42/clangd-args
  (list
   (format "-j=%s" (- (num-processors) 2))
   "--clang-tidy"
   "--header-insertion=iwyu"
   "--pch-storage=memory"
   "--background-index"
   "--cross-file-rename"
   "--completion-style=detailed"
   "--malloc-trim"
   )
  "Arguments to pass to clangd.")

(use! cmake-ts-mode
  "Enable cmake-ts-mode instead of the non-TS version.")

(use! eldoc-cmake
  "ElDoc and cmake integration"
  :hook (cmake-ts-mode . eldoc-cmake-enable))


(use! ninja-mode
  "This cube enables Ninja integration with FG42. For more info checkout:
https://github.com/ninja-build/ninja/blob/master/misc/ninja-mode.el")


(defun fg42/c-ts-mode-setup ()
  "A hook handler to setup cpp related configurations."
  (message "[FG42][C/C++]: Make sure to setup clangd to fit your needs. For more info: https://clangd.llvm.org/config")
  (setq-local company-backends
              '((company-capf :with company-yasnippet) :separate
                (company-keywords company-dabbrev company-ispell) :separate
                company-files)))


(use! c-ts-mode
  "C++ setup. We're using treesitter version of c++ mode."
  :init
  ;; Remap the standard C/C++ modes
  (add-to-list 'major-mode-remap-alist '(c-mode . c-ts-mode))
  (add-to-list 'major-mode-remap-alist '(c++-mode . c++-ts-mode))
  (add-to-list 'major-mode-remap-alist '(c-or-c++-mode . c-or-c++-ts-mode))

  :config
  ;; Set the default lang server for C/C++ to clangd
  (with-eval-after-load 'eglot
    (add-to-list
     'eglot-server-programs
     `(c-mode c++-mode c-ts-mode c++-ts-mode . ("clangd" ,@fg42/clangd-args))))

  :hook
  (c++-ts-mode . eglot-ensure)
  (c++-ts-mode . company-mode)
  (c++-ts-mode . fg42/c-ts-mode-setup)
  (c++-ts-mode . flyspell-prog-mode))


(provide 'fg42/langs/cpp)
;;; cpp.el ends here