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.config/emacs/modules/lang/csharp/README.org

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+#+TITLE: :lang csharp
+
+* Table of Contents :TOC:
+- [[#description][Description]]
+  - [[#module-flags][Module Flags]]
+  - [[#plugins][Plugins]]
+- [[#prerequisites][Prerequisites]]
+  - [[#macos][MacOS]]
+  - [[#arch-linux][Arch Linux]]
+  - [[#nixos][NixOS]]
+
+* Description
+This module adds C# support to Emacs. Powered by omnisharp (directly or through
+LSP).
+
+** Module Flags
++ =+lsp= Enables omnisharp through LSP support (requires omnisharp).
++ =+unity= Enables special support for the [[https://unity.com/][Unity game engine]] (particularly,
+  support for HLSL shaders).
++ =+dotnet= Enables Dotnet transient interface with Sharper 
+
+** Plugins
++ [[https://github.com/josteink/csharp-mode][csharp-mode]]
++ [[https://github.com/omajid/csproj-mode][csproj-mode]]
++ [[https://github.com/OmniSharp/omnisharp-emacs][omnisharp]]* (not =+lsp=)
++ [[https://github.com/midnightSuyama/shader-mode][shader-mode]]* (=+unity=)
++ [[https://github.com/sebasmonia/sharper][sharper]]  (=+dotnet=)
+  
+* Prerequisites
+This module needs:
+
++ omnisharp (with the ~+lsp~ flag, this must be installed externally. Without
+  it, use ~M-x omnisharp-install-server~)
++ .NET SDKs (on Windows)
++ Mono (on UNIX platforms)
++ .NET Core 1.X - 3.X or .NET 5 for cross platform
+
+** TODO MacOS
+** Arch Linux
+#+BEGIN_SRC sh
+sudo pacman --needed --noconfirm -S mono
+#+END_SRC
+** TODO NixOS

.config/emacs/modules/lang/csharp/autoload.el

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+;;; lang/csharp/autoload.el -*- lexical-binding: t; -*-
+
+;;;###autoload
+(defun +csharp-sp-point-in-type-p (id action context)
+  "Return t if point is in the right place for C# angle-brackets."
+  (and (sp-in-code-p id action context)
+       (cond ((eq action 'insert)
+              (sp-point-after-word-p id action context))
+             ((eq action 'autoskip)
+              (/= (char-before) 32)))))
+
+;;;###autoload
+(defun +csharp-kill-omnisharp-server-h ()
+  (unless (doom-buffers-in-mode 'csharp-mode (buffer-list))
+    (omnisharp-stop-server)))

.config/emacs/modules/lang/csharp/config.el

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+;;; lang/csharp/config.el -*- lexical-binding: t; -*-
+
+(use-package! csharp-mode
+  :hook (csharp-mode . rainbow-delimiters-mode)
+  :config
+  (set-electric! 'csharp-mode :chars '(?\n ?\}))
+  (set-rotate-patterns! 'csharp-mode
+    :symbols '(("public" "protected" "private")
+               ("class" "struct")))
+  (set-ligatures! 'csharp-mode
+    ;; Functional
+    :lambda        "() =>"
+    ;; Types
+    :null          "null"
+    :true          "true"
+    :false         "false"
+    :int           "int"
+    :float         "float"
+    :str           "string"
+    :bool          "bool"
+    :list          "List"
+    ;; Flow
+    :not           "!"
+    :in            "in"
+    :and           "&&"
+    :or            "||"
+    :for           "for"
+    :return        "return"
+    :yield         "yield")
+
+  (sp-local-pair 'csharp-mode "<" ">"
+                 :when '(+csharp-sp-point-in-type-p)
+                 :post-handlers '(("| " "SPC")))
+
+  (when (featurep! +lsp)
+    (add-hook 'csharp-mode-local-vars-hook #'lsp!))
+
+  (defadvice! +csharp-disable-clear-string-fences-a (fn &rest args)
+    "This turns off `c-clear-string-fences' for `csharp-mode'. When
+on for `csharp-mode' font lock breaks after an interpolated string
+or terminating simple string."
+    :around #'csharp-disable-clear-string-fences
+    (unless (eq major-mode 'csharp-mode)
+      (apply fn args))))
+
+
+;; Unity shaders
+(use-package! shader-mode
+  :when (featurep! +unity)
+  :mode "\\.shader\\'"
+  :config
+  (def-project-mode! +csharp-unity-mode
+    :modes '(csharp-mode shader-mode)
+    :files (and "Assets" "Library/MonoManager.asset" "Library/ScriptMapper")))
+
+
+(use-package! sharper
+  :when (featurep! +dotnet)
+  :general ("C-c d" #'sharper-main-transient)
+  :config
+  (map! (:map sharper--solution-management-mode-map
+         :nv "RET" #'sharper-transient-solution
+         :nv "gr" #'sharper--solution-management-refresh)
+        (:map sharper--project-references-mode-map
+         :nv "RET" #'sharper-transient-project-references
+         :nv "gr" #'sharper--project-references-refresh)
+        (:map sharper--project-packages-mode-map
+         :nv "RET" #'sharper-transient-project-packages
+         :nv "gr" #'sharper--project-packages-refresh)
+        (:map sharper--nuget-results-mode-map
+         :nv "RET" #'sharper--nuget-search-install)))
+
+
+(use-package! sln-mode :mode "\\.sln\\'")

.config/emacs/modules/lang/csharp/doctor.el

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+;; -*- lexical-binding: t; no-byte-compile: t; -*-
+;;; lang/csharp/doctor.el
+
+(when (and (require 'omnisharp nil t) (not (featurep! +lsp)))
+  (let ((omnisharp-bin (or omnisharp-server-executable-path (omnisharp--server-installation-path t))))
+    (unless (file-exists-p omnisharp-bin)
+      (warn! "Omnisharp server isn't installed, completion won't work"))))

.config/emacs/modules/lang/csharp/packages.el

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+;; -*- no-byte-compile: t; -*-
+;;; lang/csharp/packages.el
+
+(package! csharp-mode :pin "fe8a68e9849fc7617e0c870cacd6599b8a797638")
+(package! csproj-mode :pin "a7f0f4610c976a28c41b9b8299892f88b5d0336c")
+(package! sln-mode :pin "0f91d1b957c7d2a7bab9278ec57b54d57f1dbd9c")
+(when (featurep! +unity)
+  (package! shader-mode :pin "d7dc8d0d6fe8914e8b6d5cf2081ad61e6952359c"))
+(when (featurep! +dotnet)
+  (package! sharper :pin "08277b6c30568adfbe438c9f2a1d6c3db4b7ebeb"))