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;;; bob.el --- Bob exercise (exercism)
;;; Commentary:
;;; Code:
(require 'cl-macs)
(require 'seq)
(cl-defstruct (utterance (:constructor utterance-create)
(:copier nil))
is-question
has-uppercase
all-uppercase
has-content)
(defun utterance-is-yelling (utterance)
(and (utterance-has-uppercase utterance)
(utterance-all-uppercase utterance)))
(defun update-utterance (utterance c)
(let ((s (string c))
(case-fold-search nil))
(unless (string-match-p "[[:space:]]" s)
(setf (utterance-is-question utterance) (eql ?? c))
(setf (utterance-has-content utterance) t)
(when (string-match-p "[[:upper:]]" s)
(setf (utterance-has-uppercase utterance) t))
(when (string-match-p "[[:lower:]]" s)
(setf (utterance-all-uppercase utterance) nil)))
utterance))
(defun response-for (message)
(let* ((utterance
(seq-reduce
'update-utterance
message
(utterance-create
:is-question nil
:has-uppercase nil
:all-uppercase t
:has-content nil)))
(is-question (utterance-is-question utterance))
(is-yelling (utterance-is-yelling utterance)))
(cond
((not (utterance-has-content utterance))
"Fine. Be that way!")
((and is-question is-yelling)
"Calm down, I know what I'm doing!")
((and is-question (not is-yelling))
"Sure.")
((and (not is-question) is-yelling)
"Whoa, chill out!" )
((and (not is-question) (not is-yelling))
"Whatever." ))))
(provide 'bob)
;;; bob.el ends here
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