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-rw-r--r--.emacs.local/simpc-mode.el127
1 files changed, 0 insertions, 127 deletions
diff --git a/.emacs.local/simpc-mode.el b/.emacs.local/simpc-mode.el
deleted file mode 100644
index 928bb93..0000000
--- a/.emacs.local/simpc-mode.el
+++ /dev/null
@@ -1,127 +0,0 @@
-(require 'subr-x)
-
-(defvar simpc-mode-syntax-table
- (let ((table (make-syntax-table)))
- ;; C/C++ style comments
- (modify-syntax-entry ?/ ". 124b" table)
- (modify-syntax-entry ?* ". 23" table)
- (modify-syntax-entry ?\n "> b" table)
- ;; Preprocessor stuff?
- (modify-syntax-entry ?# "." table)
- ;; Chars are the same as strings
- (modify-syntax-entry ?' "\"" table)
- ;; Treat <> as punctuation (needed to highlight C++ keywords
- ;; properly in template syntax)
- (modify-syntax-entry ?< "." table)
- (modify-syntax-entry ?> "." table)
-
- (modify-syntax-entry ?& "." table)
- (modify-syntax-entry ?% "." table)
- table))
-
-(defun simpc-types ()
- '("char" "int" "long" "short" "void" "bool" "float" "double" "signed" "unsigned"
- "char16_t" "char32_t" "char8_t"
- "int8_t" "uint8_t" "int16_t" "uint16_t" "int32_t" "uint32_t" "int64_t" "uint64_t"
- "uintptr_t"
- "size_t" "ptrdiff_t"
- "va_list"))
-
-(defun simpc-keywords ()
- '("auto" "break" "case" "const" "continue" "default" "do"
- "else" "enum" "extern" "for" "goto" "if" "register"
- "return" "sizeof" "static" "struct" "switch" "typedef"
- "union" "volatile" "while" "alignas" "alignof" "and"
- "and_eq" "asm" "atomic_cancel" "atomic_commit" "atomic_noexcept" "bitand"
- "bitor" "catch" "class" "co_await"
- "co_return" "co_yield" "compl" "concept" "const_cast" "consteval" "constexpr"
- "constinit" "decltype" "delete" "dynamic_cast" "explicit" "export" "false"
- "friend" "inline" "mutable" "namespace" "new" "noexcept" "not" "not_eq"
- "nullptr" "operator" "or" "or_eq" "private" "protected" "public" "reflexpr"
- "reinterpret_cast" "requires" "static_assert" "static_cast" "synchronized"
- "template" "this" "thread_local" "throw" "true" "try" "typeid" "typename"
- "using" "virtual" "wchar_t" "xor" "xor_eq"))
-
-(defun simpc-font-lock-keywords ()
- (list
- `("# *\\(warn\\|error\\)" . font-lock-warning-face)
- `("# *[#a-zA-Z0-9_]+" . font-lock-preprocessor-face)
- `("# *include\\(?:_next\\)?\\s-+\\(\\(<\\|\"\\).*\\(>\\|\"\\)\\)" . (1 font-lock-string-face))
- `("\\(?:enum\\|struct\\)\\s-+\\([a-zA-Z0-9_]+\\)" . (1 font-lock-type-face))
- `(,(regexp-opt (simpc-keywords) 'symbols) . font-lock-keyword-face)
- `(,(regexp-opt (simpc-types) 'symbols) . font-lock-type-face)))
-
-(defun simpc--previous-non-empty-line ()
- "Returns either NIL when there is no such line or a pair (line . indentation)"
- (save-excursion
- ;; If you are on the first line, but not at the beginning of buffer (BOB) the `(bobp)`
- ;; function does not return `t`. So we have to move to the beginning of the line first.
- ;; TODO: feel free to suggest a better approach for checking BOB here.
- (move-beginning-of-line nil)
- (if (bobp)
- ;; If you are standing at the BOB, you by definition don't have a previous non-empty line.
- nil
- ;; Moving one line backwards because the current line is by definition is not
- ;; the previous non-empty line.
- (forward-line -1)
- ;; Keep moving backwards until we hit BOB or a non-empty line.
- (while (and (not (bobp))
- (string-empty-p
- (string-trim-right
- (thing-at-point 'line t))))
- (forward-line -1))
-
- (if (string-empty-p
- (string-trim-right
- (thing-at-point 'line t)))
- ;; If after moving backwards for this long we still look at an empty
- ;; line we by definition didn't find the previous non-empty line.
- nil
- ;; We found the previous non-empty line!
- (cons (thing-at-point 'line t)
- (current-indentation))))))
-
-(defun simpc--desired-indentation ()
- (let ((prev (simpc--previous-non-empty-line)))
- (if (not prev)
- (current-indentation)
- (let ((indent-len 4)
- (cur-line (string-trim-right (thing-at-point 'line t)))
- (prev-line (string-trim-right (car prev)))
- (prev-indent (cdr prev)))
- (cond
- ((string-match-p "^\\s-*switch\\s-*(.+)" prev-line)
- prev-indent)
- ((and (string-suffix-p "{" prev-line)
- (string-prefix-p "}" (string-trim-left cur-line)))
- prev-indent)
- ((string-suffix-p "{" prev-line)
- (+ prev-indent indent-len))
- ((string-prefix-p "}" (string-trim-left cur-line))
- (max (- prev-indent indent-len) 0))
- ((string-suffix-p ":" prev-line)
- (if (string-suffix-p ":" cur-line)
- prev-indent
- (+ prev-indent indent-len)))
- ((string-suffix-p ":" cur-line)
- (max (- prev-indent indent-len) 0))
- (t prev-indent))))))
-
-;;; TODO: customizable indentation (amount of spaces, tabs, etc)
-(defun simpc-indent-line ()
- (interactive)
- (when (not (bobp))
- (let* ((desired-indentation
- (simpc--desired-indentation))
- (n (max (- (current-column) (current-indentation)) 0)))
- (indent-line-to desired-indentation)
- (forward-char n))))
-
-(define-derived-mode simpc-mode prog-mode "Simple C"
- "Simple major mode for editing C files."
- :syntax-table simpc-mode-syntax-table
- (setq-local font-lock-defaults '(simpc-font-lock-keywords))
- (setq-local indent-line-function 'simpc-indent-line)
- (setq-local comment-start "// "))
-
-(provide 'simpc-mode)