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Support ~N in SRFI-19 string->date

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* module/srfi/srfi-19.scm (fractional-integer-reader,
  make-fractional-integer-reader): From reference implementation.
  (reader-directives): Handle #\N, from reference implementation.
* test-suite/tests/srfi-19: Add tests for string->date ~N.
* doc/ref/srfi-modules.texi (string->date): Add line for ~N.
This commit is contained in:
Daniel Llorens 2018-12-10 11:57:05 +01:00 • committed by Andy Wingo
parent 4f3aa81617
commit 347ec3f088
3 changed files with 37 additions and 0 deletions
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10
test-suite/tests/srfi-19.test
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@ -176,6 +176,16 @@ incomplete numerical tower implementation.)"
(equal? "Sun Jun 05 18:33:00+0200 2005"
(date->string date))))
(pass-if "string->date understands nanoseconds (1)"
(time=? (date->time-utc (string->date "2018-12-10 10:53:24.189"
"~Y-~m-~d ~H:~M:~S.~N"))
(date->time-utc (make-date 189000000 24 53 10 10 12 2018 3600))))
(pass-if "string->date understands nanoseconds (2)"
(time=? (date->time-utc (string->date "2018-12-10 10:53:24.189654321"
"~Y-~m-~d ~H:~M:~S.~N"))
(date->time-utc (make-date 189654321 24 53 10 10 12 2018 3600))))
(pass-if "date->string pads small nanoseconds values correctly"
(let* ((date (make-date 99999999 5 34 12 26 3 2017 0)))
(equal? "099999999"