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38 lines
1.9 KiB
EmacsLisp
38 lines
1.9 KiB
EmacsLisp
(defun make-item (name sell-in quality)
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"Create an item with NAME, SELL-IN, and QUALITY."
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(list :name name :sell-in sell-in :quality quality))
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(defun update-quality (items)
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(dolist (item items)
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(if (and (not (string= (plist-get item :name) "Aged Brie"))
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(not (string= (plist-get item :name) "Backstage passes to a TAFKAL80ETC concert")))
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(when (> (plist-get item :quality) 0)
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(when (not (string= (plist-get item :name) "Sulfuras, Hand of Ragnaros"))
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(setf (plist-get item :quality) (1- (plist-get item :quality)))))
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(when (< (plist-get item :quality) 50)
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(setf (plist-get item :quality) (1+ (plist-get item :quality)))
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(when (string= (plist-get item :name) "Backstage passes to a TAFKAL80ETC concert")
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(when (< (plist-get item :sell-in) 11)
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(when (< (plist-get item :quality) 50)
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(setf (plist-get item :quality) (1+ (plist-get item :quality)))))
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(when (< (plist-get item :sell-in) 6)
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(when (< (plist-get item :quality) 50)
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(setf (plist-get item :quality) (1+ (plist-get item :quality)))))))
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(when (not (string= (plist-get item :name) "Sulfuras, Hand of Ragnaros"))
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(setf (plist-get item :sell-in) (1- (plist-get item :sell-in))))
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(when (< (plist-get item :sell-in) 0)
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(if (not (string= (plist-get item :name) "Aged Brie"))
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(if (not (string= (plist-get item :name) "Backstage passes to a TAFKAL80ETC concert"))
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(when (> (plist-get item :quality) 0)
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(when (not (string= (plist-get item :name) "Sulfuras, Hand of Ragnaros"))
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(setf (plist-get item :quality) (1- (plist-get item :quality)))))
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(setf (plist-get item :quality) 0))
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(when (< (plist-get item :quality) 50)
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(setf (plist-get item :quality) (1+ (plist-get item :quality)))))))))
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(provide 'gilded-rose)
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