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|
(in-package #:containers)
#|
#[basic-queue 3 4 5 6]
#[vector-container 4 1 2 3]
#[associative-container [4 5] [2 :a] [3 2]]
#[associative-container (4 5) ([1 2] :a) (3 2)]
(make-container 'associative-container
:initial-contents '((4 3) 5 6 7))
(print-container *)
#[associative-container 4 5 1 :a 3 :c]
BB on DB with strong ontology
|#
(defvar *container-readtable* (copy-readtable))
(defvar *container-print-representation* :summary ;; :contents
"Specifies the output format for container printing. This can be :contents or :summary.")
(defvar *container-print-length* nil
"Specifies the maximum number of container elements to print when *container-print-representation* is :contents. If *container-print-length* less than the size of the container, then *container-print-length* elements will be printed followed by an ellipse. If *container-print-length* is null, then all elements will be printed.")
(defvar *container-print-association-string* " -> "
"Specify the string used to separate keys and values when printing the contents of an associative-container.")
(defvar *container-print-association-separator* "; "
"Specify the string used to separate <key value> pairs when printing the contents of an associative-container.")
(set-macro-character
#\[
#'(lambda (stream ignore)
(declare (ignore ignore))
(read-container-element stream #\]))
nil *container-readtable*)
(set-macro-character
#\]
#'(lambda (stream ch)
(warn "Ignoring extra \"~c\" on ~s ." ch stream))
nil *container-readtable*)
#+MCL
;;?? Gary King 2005-11-17: need to port
(defun read-container (stream &optional (termch #\]))
(let* ((head (cons nil nil))
(tail head))
(declare (dynamic-extent head)
(list head tail))
(loop
(multiple-value-bind (form form-p)
(ccl::%read-list-expression stream nil termch)
(when (not form-p) (return))
(rplacd tail (setq tail (cons form nil)))))
(cdr head)))
#+MCL
;;?? Gary King 2005-11-17: need to port
(defun read-container-element (stream &optional (termch #\]))
(let* ((head (cons nil nil))
(tail head))
(declare (dynamic-extent head)
(list head tail))
(loop
(multiple-value-bind (form form-p)
(ccl::%read-list-expression stream nil termch)
(when (not form-p) (return))
(rplacd tail (setq tail (cons form nil)))))
(cdr head)))
#+MCL
;;?? Gary King 2005-11-17: need to port
(set-dispatch-macro-character
#\#
#\[
(lambda (stream subchar numarg)
(declare (ignore subchar numarg))
(let ((*readtable* *container-readtable*))
(destructuring-bind (type &rest data) (ccl::read-list stream t #\])
(make-container type :initial-contents data)))))
#+MCL
;;?? Gary King 2005-11-17: need to port
(defmethod print-object ((container abstract-container) stream)
(ecase *container-print-representation*
(:contents
(format stream "#[~A" (type-of container))
(print-container-contents container stream)
(princ #\] stream))
(:summary
(print-unreadable-object (container stream :type t :identity t)
(print-container-summary container stream)))))
(defmethod print-container-summary ((container abstract-container) stream)
(format stream "~D" (size container)))
(defmethod print-container-contents ((container abstract-container) stream)
(let* ((base-print-fn (lambda (element)
(princ " " stream)
(prin1 element stream)))
(print-fn
(if *container-print-length*
(let ((count 0))
(lambda (element)
(when (> (incf count) *container-print-length*)
(princ " ..." stream)
(return-from print-container-contents))
(funcall base-print-fn element)))
base-print-fn)))
(iterate-elements container print-fn)))
(defmethod print-container-contents ((container associative-container-mixin) stream)
(let* ((first? t)
(base-print-fn (lambda (key value)
(if first?
(princ " " stream)
(princ *container-print-association-separator* stream))
(setf first? nil)
(prin1 key stream)
(princ *container-print-association-string* stream)
(prin1 value stream)))
(print-fn
(if *container-print-length*
(let ((count 0))
(lambda (key value)
(when (> (incf count) *container-print-length*)
(princ " ..." stream)
(return-from print-container-contents))
(funcall base-print-fn key value)))
base-print-fn)))
(iterate-key-value container print-fn)))
(defmethod print-container-contents ((container array-container-abstract) stream)
(princ "..." stream))
#+Test
(let ((*container-print-length* 5)
(*container-print-representation* :contents)
(c (make-container 'list-container)))
(loop repeat 20 do
(insert-item c (variates:integer-random variates:*random-generator* 0 100)))
(print c)
(values))
#+Test
(let ((*container-print-length* 5)
(*container-print-representation* :contents)
(c (make-container 'alist-container)))
(loop for i from 1 to 20 do
(setf (item-at c i)
(variates:integer-random variates:*random-generator* 0 100)))
(print c)
(values))
;;; container-printing-mixin
(defclass* container-printing-mixin ()
((print-representation :unbound ia)
(print-length :unbound ia)
(print-association-string :unbound ia)
(print-association-separator :unbound ia))
(:default-initargs
:print-representation :summary
:print-length nil
:print-association-string " -> "
:print-association-separator ";"))
(defmethod print-object :around ((container container-printing-mixin) stream)
(declare (ignorable stream))
(let ((*container-print-representation* (print-representation container))
(*container-print-length* (print-length container))
(*container-print-association-string* (print-association-string container))
(*container-print-association-separator* (print-association-separator container)))
(call-next-method)))
#+Example
(let ((c (make-container '(simple-associative-container
container-printing-mixin)
:initial-contents '(:a 1 :b 2 :c 3 :d 4 :e 5)
:print-representation :summary)))
(print c)
(values))
#+Example
(let ((c (make-container '(simple-associative-container
container-printing-mixin)
:initial-contents '(:a 1 :b 2 :c 3 :d 4 :e 5)
:print-representation :contents
:print-length 3)))
(print c)
(values))
|
