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;;; wasp-bless --- The Blessing -*- lexical-binding: t; -*-
;;; Commentary:
;;; Code:
(require 'cl-lib)
(require 'dash)
(require 's)
(require 'json)
(require 'wasp-chat)
(require 'wasp-model)
(defcustom w/bless-buffer " *wasp-bless*"
"Name of buffer used to store Bless output."
:type '(string)
:group 'wasp)
(defun w/bless-error (e)
"Report an error E."
(message (alist-get 'message e)))
(defun w/bless-parse-value (j)
"Construct an Emacs Lisp value representation of the value J."
(let ((tag (alist-get 'tag j)))
(cond
((s-equals? tag "ValueInteger") (alist-get 'contents j))
((s-equals? tag "ValueArray")
(-map #'w/bless-parse-value (alist-get 'contents j)))
(t (message "Unknown Bless tag: %s" tag)))))
(defun w/bless-parse-effect (j)
"Construct an Emacs Lisp value representation of the effect J."
(let ((tag (alist-get 'tag j))
(c (alist-get 'contents j)))
(cond
((s-equals? tag "EffectPrint") `(print ,(w/bless-parse-value c)))
((s-equals? tag "EffectPrintBackwards") `(print-backwards ,(w/bless-parse-value c)))
((s-equals? tag "EffectSoundboard") `(soundboard ,(w/bless-parse-value c)))
((s-equals? tag "EffectModelToggle") `(model-toggle ,(w/bless-parse-value c)))
)))
(defun w/bless-parse-stack (j)
"Construct an Emacs Lisp value representation of the stack J."
(-map #'w/bless-parse-value j))
(defun w/bless-parse-effects (j)
"Construct an Emacs Lisp value representation of the effects J."
(-map #'w/bless-parse-effect j))
(defun w/bless-apply-effect (e)
"Apply the list of side effects E."
(cl-case (car e)
(print (w/write-chat-event (format "%s" (cadr e))))
(print-backwards (w/write-chat-event (reverse (format "%s" (cadr e)))))
(soundboard (soundboard//play-clip (cadr e)))
(model-toggle (w/model-toggle (cadr e)))
(t (message "Unknown effect tag: %s" (car e)))))
(defun w/bless-eval (str k &optional fuel)
"Bless STR according to the nature of the blessing.
Pass the result to K.
Optionally limit evaluation to FUEL steps."
(let ((buf (generate-new-buffer w/bless-buffer)))
(with-current-buffer buf
(erase-buffer))
(make-process
:name "wasp-bless-eval"
:buffer buf
:command `("bless" "-j" "eval" ,@(if fuel (list "--fuel" (number-to-string fuel)) nil) ,str)
:sentinel
(lambda (_ _)
(let* ((s (with-current-buffer buf (buffer-string)))
(j (json-read-from-string s))
(status (alist-get 'status j)))
(kill-buffer buf)
(if (s-equals? status "success")
(funcall
k
(cons
(w/bless-parse-stack (alist-get 'stack (alist-get 'data j)))
(w/bless-parse-effects (alist-get 'effects (alist-get 'data j)))))
(w/bless-error (alist-get 'data j))))))))
(defun w/bless (str &optional fuel)
"Run the Bless program STR and apply its side effects.
Optionally limit evaluation to FUEL steps."
(w/bless-eval
str
(lambda (res)
(--each (cdr res)
(w/bless-apply-effect it)))
fuel))
(provide 'wasp-bless)
;;; wasp-bless.el ends here
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