From fe88e456a7a71de02b1460b637df7d409dff7475 Mon Sep 17 00:00:00 2001
From: mcbloch <alazeo@live.be>
Date: Fri, 24 Jan 2020 01:31:37 +0100
Subject: [PATCH] Add initial HLDS syntax highlighting for Emacs

---
 etc/emacs/hlds-mode.el | 72 ++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 72 insertions(+)
 create mode 100644 etc/emacs/hlds-mode.el

diff --git a/etc/emacs/hlds-mode.el b/etc/emacs/hlds-mode.el
new file mode 100644
index 0000000..436d40f
--- /dev/null
+++ b/etc/emacs/hlds-mode.el
@@ -0,0 +1,72 @@
+;;;;;:;;;;;;;;;;;;;;;;;;;
+;;; Haldis menu files ;;;
+;;;;;;;;;;;;;;;;;;;;;;;;;
+
+(defun my-font-lock-restart ()
+  "Reload the syntax highlighting"
+  (interactive)
+  (setq font-lock-mode-major-mode nil)
+  (font-lock-fontify-buffer)
+  (message "hldsmode: Reloaded syntax highlighting!"))
+
+(defun my-restart-hlds-mode ()
+  (interactive)
+  (let ((lisp-mode-hook nil))
+    (normal-mode)
+    (message "hldsmode: Reloaded mode!")))
+
+(setq hlds-font-lock-keywords
+      (let* (
+             ;; define several category of keywords
+             (x-keywords '())
+             (x-types '("base"))
+             (x-constants '())
+             (x-events '())
+             (x-functions '("single_choice" "multi_choice"))
+
+             ;; generate regex string for each category of keywords
+             (x-keywords-regexp (regexp-opt x-keywords 'words))
+             (x-types-regexp (regexp-opt x-types 'words))
+             (x-constants-regexp (regexp-opt x-constants 'words))
+             (x-events-regexp (regexp-opt x-events 'words))
+             (x-functions-regexp (regexp-opt x-functions 'words))
+
+             ;(x-functions-regexp-final (concat "<h1>\\|</h1>" "\\|" x-functions-regexp))
+             (x-constants-regexp-final (concat "\\({[^{]+?}\\)" "\\|" x-constants-regexp))
+             (x-keywords-regexp-final (concat "\\(€.+\\)$" "\\|" x-keywords-regexp))
+             (x-events-regexp-final (concat "^\\([a-zA-Z0-9_]+?\\):" "\\|" x-events-regexp)))
+
+          `(
+            (,x-types-regexp . font-lock-type-face)
+            ;(,x-constants-regexp-final . font-lock-constant-face)
+            (,x-constants-regexp-final .(1 font-lock-constant-face))
+            (,x-events-regexp-final . (1 font-lock-builtin-face))
+            (,x-functions-regexp . font-lock-function-name-face)
+            (,x-keywords-regexp-final . (1 font-lock-keyword-face))
+            ;; note: order above matters, because once colored, that part won't change.
+            ;; in general, put longer words first
+          )))
+
+(defvar hlds-mode-syntax-table nil "Syntax table for `hlds-mode'.")
+
+(setq hlds-mode-syntax-table
+      (let ( (synTable (make-syntax-table)))
+        ;; hlds style comment: “== …”
+        (modify-syntax-entry ?# "<" synTable)
+        (modify-syntax-entry ?\n ">" synTable)
+        synTable))
+
+;;;###autoload
+(define-derived-mode hlds-mode fundamental-mode "hlds"
+  "Major mode for editing Haldis menu files."
+
+  ;; code for syntax highlighting
+  (setq font-lock-defaults '((hlds-font-lock-keywords)))
+
+  (set-syntax-table hlds-mode-syntax-table)
+  )
+
+
+
+;; add the mode to the `features' list
+(provide 'hlds-mode)