46 lines
1.2 KiB
Common Lisp
46 lines
1.2 KiB
Common Lisp
(defpackage #:hsx/element
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(:use #:cl)
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(:export #:element-kind
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#:element-props
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#:element-children
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#:create-element
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#:expand))
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(in-package #:hsx/element)
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(defclass element ()
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((kind
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:reader element-kind
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:initarg :kind)
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(props
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:reader element-props
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:initarg :props)
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(children
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:reader element-children
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:initarg :children)))
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(defun create-element (kind props &rest children)
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(make-instance 'element
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:kind kind
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:props props
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:children (flatten children)))
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(defmethod expand ((elm element))
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(with-accessors ((kind element-kind)
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(props element-props)
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(children element-children)) elm
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(if (functionp kind)
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(apply kind (append props
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(and children
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(list :children children))))
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elm)))
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;;;; utils
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(defun flatten (x)
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(labels ((rec (x acc)
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(cond ((null x) acc)
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((atom x) (cons x acc))
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(t (rec
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(car x)
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(rec (cdr x) acc))))))
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(rec x nil)))
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