(or (featurep 'cl) (require 'cl))
(defmacro defkeyword (x &optional doc)
(list* 'defconst x (list 'quote x) (and doc (list doc))))
(defun keywordp (sym)
(and (symbolp sym) (eq (aref (symbol-name sym) 0) ?\:) (set sym sym)))
(defun keyword-of (sym)
(or (keywordp sym) (keywordp (intern (format ":%s" sym)))))
(put 'Multiple-value-bind 'lisp-indent-function 2)
(put 'Multiple-value-setq 'lisp-indent-function 2)
(put 'Multiple-value-call 'lisp-indent-function 1)
(put 'Multiple-value-prog1 'lisp-indent-function 1)
(defvar *mvalues-values* nil)
(defun Values (&rest val-forms)
(setq *mvalues-values* val-forms)
(car val-forms))
(defun Values-list (val-forms)
(apply 'values val-forms))
(defmacro Multiple-value-list (form)
(list 'let* (list '(*mvalues-values* nil) (list '*mvalues-temp* form))
'(or (and (eq *mvalues-temp* (car *mvalues-values*)) *mvalues-values*)
(list *mvalues-temp*))))
(defmacro Multiple-value-call (function &rest args)
(list 'apply function
(cons 'append
(mapcar (function (lambda (x) (list 'Multiple-value-list x)))
args))))
(defmacro Multiple-value-bind (vars form &rest body)
(list* 'multiple-value-bind vars (list 'Multiple-value-list form) body))
(defmacro Multiple-value-setq (vars form)
(list 'multiple-value-setq vars (list 'Multiple-value-list form)))
(defmacro Multiple-value-prog1 (form &rest body)
(list 'prog1 form (list* 'let '((*mvalues-values* nil)) body)))
(defun build-klist (arglist keys &optional allow-others)
(let ((res (Multiple-value-call 'mapcar* 'cons (unzip-lists arglist))))
(or allow-others
(let ((bad (set-difference (mapcar 'car res) keys)))
(if bad (error "Bad keywords: %s not in %s" bad keys))))
res))
(defun extract-from-klist (klist key &optional def)
(let ((res (assq key klist))) (if res (cdr res) def)))
(defun keyword-argument-supplied-p (klist key)
(assq key klist))
(defun elt-satisfies-test-p (item elt klist)
(let ((test-not (cdr (assq ':test-not klist)))
(test (cdr (assq ':test klist)))
(key (cdr (assq ':key klist))))
(if key (setq elt (funcall key elt)))
(if test-not (not (funcall test-not item elt))
(funcall (or test 'eql) item elt))))
(defun cl-floor (a &optional b) (Values-list (floor* a b)))
(defun cl-ceiling (a &optional b) (Values-list (ceiling* a b)))
(defun cl-round (a &optional b) (Values-list (round* a b)))
(defun cl-truncate (a &optional b) (Values-list (truncate* a b)))
(defun safe-idiv (a b)
(let* ((q (/ (abs a) (abs b)))
(s (* (signum a) (signum b))))
(Values q (- a (* s q b)) s)))
(defun pair-with-newsyms (oldforms)
(let ((newsyms (mapcar (function (lambda (x) (gensym))) oldforms)))
(Values (mapcar* 'list newsyms oldforms) newsyms)))
(defun zip-lists (evens odds)
(mapcan 'list evens odds))
(defun unzip-lists (list)
(let ((e nil) (o nil))
(while list
(setq e (cons (car list) e) o (cons (cadr list) o) list (cddr list)))
(Values (nreverse e) (nreverse o))))
(defun reassemble-argslists (list)
(let ((n (apply 'min (mapcar 'length list))) (res nil))
(while (>= (setq n (1- n)) 0)
(setq res (cons (mapcar (function (lambda (x) (elt x n))) list) res)))
res))
(defun duplicate-symbols-p (list)
(let ((res nil))
(while list
(if (memq (car list) (cdr list)) (setq res (cons (car list) res)))
(setq list (cdr list)))
res))
(defun setnth (n list x)
(setcar (nthcdr n list) x))
(defun setnthcdr (n list x)
(setcdr (nthcdr (1- n) list) x))
(defun setelt (seq n x)
(if (consp seq) (setcar (nthcdr n seq) x) (aset seq n x)))
(provide 'cl-compat)