;; Author: Artur Malabarba <emacs@endlessparentheses.com>
;; Keywords: lisp
;; Package-Requires: ((emacs "24.1") (cl-lib "0.5"))
-;; Version: 0.4
+;; Version: 0.5
;;; Commentary:
;;
(lambda (val)
(validate-value val (custom-variable-type symbol) 'noerror))))
-(defmacro validate-setq (symbol value)
+(defmacro validate-setq (&rest svs)
"Like `setq', but throw an error if validation fails.
-VALUE is validated against SYMBOL's custom type."
- `(if (boundp ',symbol)
- (setq ,symbol (validate-value ,value (custom-variable-type ',symbol)))
- (user-error "Trying to validate a variable that's not defined yet: `%s'.\nYou need to require the package before validating"
- ',symbol)))
+VALUE is validated against SYMBOL's custom type.
+
+\(fn [SYM VAL] ...)"
+ (let ((out))
+ (while svs
+ (let ((symbol (pop svs))
+ (value (if (not svs)
+ (error "`validate-setq' takes an even number of arguments")
+ (pop svs))))
+ (push `(if (boundp ',symbol)
+ (setq ,symbol (validate-value ,value (custom-variable-type ',symbol)))
+ (user-error "Trying to validate a variable that's not defined yet: `%s'.\nYou need to require the package before validating"
+ ',symbol))
+ out)))
+ `(progn ,@(reverse out))))
(provide 'validate)
;;; validate.el ends here