.emacs.d/init.d/programming/c++.el

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;;; c++.el --- C++ settings. -*- lexical-binding: t; -*-
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;; Time-stamp: <2020-06-01T17:49:06+0200>
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;;; Commentary:
;;; Code:
(require 'basics/package-management)
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(require 'basics/global-variables)
(require 'programming/common)
(unless slow-computer
(when (and (executable-find "clang-tidy")
;; clang-tidy is built into clangd >= 9.
(< (my/clangd-version) 9.0))
(use-package flycheck-clang-tidy
:after (flycheck projectile lsp-ui)
:defines (lsp-mode)
:config (progn
(defun my/clang-tidy-off ()
"Disable c/c++-clang-tidy."
(when (or (eq major-mode 'c++-mode)
(eq major-mode 'c-mode))
(add-to-list 'flycheck-disabled-checkers
'c/c++-clang-tidy)))
(defun my/clang-tidy-on ()
"Enable c/c++-clang-tidy."
(when (or (eq major-mode 'c++-mode)
(eq major-mode 'c-mode))
(setq-local flycheck-disabled-checkers
(remove 'c/c++-clang-tidy
flycheck-disabled-checkers))))
(defun my/flycheck-clang-tidy-setup ()
(flycheck-clang-tidy-setup)
;; Run clang-tidy after the lsp-ui checker.
(when lsp-mode
(unless (equal (flycheck-get-next-checker-for-buffer
'lsp-ui) 'c/c++-clang-tidy)
(flycheck-add-next-checker
'lsp-ui '(warning . c/c++-clang-tidy))))))
:hook ((flycheck-mode . my/flycheck-clang-tidy-setup)
(first-change . my/clang-tidy-off) ; Disable when file is modified.
(before-save . my/clang-tidy-on)))) ; Enable if file is saved.
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) ; unless slow-computer.
;; Highlight Doxygen comments.
(use-package highlight-doxygen
:custom-face
(highlight-doxygen-comment ((t (:inherit font-lock-comment-face
:foreground "#667788"))))
(highlight-doxygen-code-block ((t (nil)))) ; Disable background-color.
:hook (prog-mode . highlight-doxygen-mode))
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;; Set coding style.
(use-package cc-mode
:defer 2
:commands (cc-mode)
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:config
(c-add-style ; Construct own coding style definition.
"tastytea"
'("bsd"
(c-basic-offset . 4) ; Indent with 4 spaces.
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(c-offsets-alist . ((innamespace . [0]) ; Don't indent in namespaces.
(statement-cont . (c-lineup-assignments
c-lineup-string-cont
c-lineup-cascaded-calls
c-lineup-class-decl-init-after-brace
+))) )))
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(c-add-style
"tastytea-legacy" ; For old code.
'("bsd"
(c-basic-offset . 4)))
(defun my/get-builddir ()
(if (member 'projectile-mode minor-mode-list)
(concat (projectile-project-root) "build")
nil))
:custom
(c-default-style "tastytea")
)
;; Highlighting, indentation and documentation for CMake.
;; The CMake ebuild installs and activates the mode.
(unless (string-match-p "gentoo" operating-system-release)
(use-package cmake-mode
:mode (("CMakeLists\\.txt$" . cmake-mode)
("\\.cmake$" . cmake-mode))))
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;; CMake reference.
(use-package eldoc-cmake
:after cmake-mode
:hook
(cmake-mode . eldoc-cmake-enable)
)
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(use-package gdb-mi
:straight nil ; Inbuilt.
:custom ((gdb-many-windows t)
(gdb-show-main t)))
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;; GUI for gdb and other debuggers.
(use-package realgud
:after (cc-mode)
:functions (realgud:gdb)
:config
(defun my/launch-gdb ()
"Load realgud and launch gdb."
(interactive)
(load-library "realgud")
(realgud:gdb))
:bind
(:map c-mode-base-map
("C-c C-g" . my/launch-gdb)
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("M-<down>" . nil) ; Disabled, because I use them for scrolling.
("M-<up>" . nil)) ; ^ FIXME: Does not work. ^
)
;; Extra highlighting.
(use-package modern-cpp-font-lock
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:diminish modern-c++-font-lock-mode
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:hook
(c++-mode . modern-c++-font-lock-mode)
)
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(use-package find-file
:defer 2
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:custom
(cc-search-directories '("." ; Set directories for ff-find-other-file.
"../src"
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"../include"
"../../src"
"../../include"
"../src/*"
"../include/*"
"../../src/*"
"../../include/*"
"/usr/include"
"/usr/local/include/*"))
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)
(when (executable-find "clang-format")
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(use-package clang-format))
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(provide 'programming/c++)
;;; c++.el ends here