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;;; -*- Mode: Lisp ; Base: 10 ; Syntax: ANSI-Common-Lisp -*-
;;;; Various utilities (to move to some other package...)
(in-package :philip-jose)
(exporting-definitions
;; depends on closer-mop
(defun collect-slots (object &optional (slot-list t))
(loop with class = (class-of object)
with slots = (if (eq slot-list t) (compute-slots class) slot-list)
for slot in slots
for name = (slot-definition-name slot)
for iarg = (or (first (slot-definition-initargs slot)) name)
nconc (when (slot-boundp object name) `(,iarg ,(slot-value object name)))))
(defun simple-print-object (object stream &key identity (slots t))
(with-output (stream)
(print-unreadable-object (object stream :type t :identity identity)
(write (collect-slots object slots) :stream stream))))
(defgeneric slots-to-print (object)
(:method ((object t))
t))
(defclass simple-print-object-mixin (standard-object)
())
(defmethod print-object ((object simple-print-object-mixin) stream)
(simple-print-object object stream :slots (slots-to-print object)))
;; depends on arnesi
(defun funkall (f &rest args)
(etypecase f
(function
(apply f args)) ; fast path for functions
(boolean
f) ; booleans evaluate as constant functions returning self -- must be before symbols
((and symbol (satisfies arnesi::fdefinition/cc))
(with-call/cc (apply (arnesi::fdefinition/cc f) args)))
(symbol
(apply f args))
(arnesi::closure/cc
(with-call/cc (apply f args)))
(cons
(apply #'kall f args)))) ; arnesi represents continuations as lists
;; This code should be moved to iolib-posix and exported.
;; gettime should be renamed get-monotonic-time and exported, too.
(defun get-real-time ()
(multiple-value-bind (sec nsec)
(et:clock-get-time et:clock-realtime)
(+ sec (* nsec 1d-9))))
(defconstant +unix-epoch+ (encode-universal-time 0 0 0 1 1 1970 0))
(defun fsleep (delay)
(when (plusp delay)
(multiple-value-bind (i d) (floor delay)
(unless (zerop i)
;; TODO: here insert check for overflow...
(et::sleep i))
(unless (zerop d)
(et::usleep (floor (* d 1000000))))))
nil)
(defmacro with-error-message-handler ((&rest handler) &body body)
(with-gensyms (err)
`(handler-bind
((simple-condition (lambda (,err)
(,@handler
(apply #'format nil
(simple-condition-format-control ,err)
(simple-condition-format-arguments ,err)))))
(t (lambda (,err) (,@handler (format nil "~A" ,err)))))
,@body)))
);exporting-definitions