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Simplify @def-setting and @set macros

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This commit is contained in:
Henrik Lissner 2017-02-13 04:44:05 -05:00
parent d2a0e40ca4
commit c845a47ecf
1 changed files with 15 additions and 32 deletions
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43
core/autoload/set.el
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@ -3,17 +3,12 @@
;; This provides a centralized configuration system that a) won't evaluate its
;; arguments if it doesn't need to (performance), b) won't complain if the
;; setting doesn't exist and c) is more elegant than a bunch of `after!' blocks,
;; setting doesn't exist and c) is more elegant than a bunch of `@after' blocks,
;; which can cause intermittent stuttering in large quantities. I'm a fan of
;; concise, do-what-I-mean front-facing configuration, believe it or not.
;;
;; Plus, it can benefit from byte-compilation.
;;;###autoload
(defvar doom-settings nil
"An alist of settings, mapping setting keywords to setter functions, which can
be a lambda or symbol.")
;;;###autoload
(defmacro @def-setting (keyword arglist &optional docstring &rest forms)
"Define a setting macro. Like `defmacro', this should return a form to be
@ -21,20 +16,9 @@ executed when called with `@set'. FORMS are not evaluated until `@set' calls it.
(declare (indent defun) (doc-string 3))
(unless (keywordp keyword)
(error "Not a valid property name: %s" keyword))
(let ((sym (intern (format "doom-setting--setter%s" keyword))))
(setq doom-settings (assq-delete-all keyword doom-settings))
(prog1
`(progn
(defun ,sym ,arglist
`(defun ,(intern (format "doom-setting--setter%s" keyword)) ,arglist
,docstring
,@forms)
(push ',(list keyword
:source (__FILE__)
:docstring docstring
:fn sym)
doom-settings))
(let (byte-compile-warnings)
(byte-compile sym)))))
,@forms))
;;;###autoload
(defmacro @set (keyword &rest values)
@ -42,16 +26,15 @@ executed when called with `@set'. FORMS are not evaluated until `@set' calls it.
(declare (indent defun))
(unless values
(error "Empty @set for %s" keyword))
(cond ((not values)
(error "Empty @set for %s" keyword))
((not (assq keyword doom-settings))
(let ((fn (intern (format "doom-setting--setter%s" keyword))))
(if (functionp fn)
(apply fn (eval `(list ,@values)))
(when doom-debug-mode
(warn "No setting found for %s" keyword)))
(t
(let* ((plist (cdr (assq keyword doom-settings)))
(fn (plist-get plist :fn)))
(if fn
(let ((values (eval `(list ,@values))))
(apply fn values))
(error "No setting function where one was expected for %s" keyword))))))
(warn "No setting found for %s" keyword)))))
;; (defun describe-setting ()
;; (interactive)
;; ;; TODO
;; (error "Not implemented yet"))