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(jzon:parse "") no longer triggers type errors #92

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Merged
Zulu-Inuoe merged 1 commit into from
Mar 3, 2026
Merged

(jzon:parse "") no longer triggers type errors #92

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4 changes: 3 additions & 1 deletion src/jzon.lisp
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Original file line number Diff line number Diff line change
Expand Up @@ -412,7 +412,9 @@ see `json-atom'"
(let ((i start))
(declare (type (integer 0 #.array-dimension-limit) i))
(let* ((step (lambda () (when (< i end) (char in (shiftf i (1+ i))))))
(pos (lambda () (%calc-pos step (- (shiftf i start) start))))
(pos (if (= 0 (length in))
(lambda () (values 1 0))
(lambda () (%calc-pos step (- (shiftf i start) start)))))
(read-string (let ((string-accum (make-array (min 256 (1- array-dimension-limit)) :element-type 'character :adjustable t :fill-pointer 0)))
(lambda ()
;; Scan until we hit a closing "
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1 change: 1 addition & 0 deletions test/jzon-tests.lisp
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Expand Up @@ -275,6 +275,7 @@
(is (equalp (ph "x" 1 "y" 2) (parse "{\"x\": 1, \"y\": 2}"))))

(test parses-objects-eof
(signals (json-eof-error) (parse ""))
(signals (json-eof-error) (parse "{"))
(signals (json-eof-error) (parse "{\"x\": 1, \"y\": 2")))

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