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infer non-falsy-string in sscanf()#1662

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ondrejmirtes merged 1 commit into
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staabm:non-falsy-sscanf
Sep 1, 2022
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infer non-falsy-string in sscanf()#1662
ondrejmirtes merged 1 commit into
phpstan:1.8.xfrom
staabm:non-falsy-sscanf

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@staabm staabm commented Aug 30, 2022

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staabm marked this pull request as ready for review August 30, 2022 07:31
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staabm force-pushed the non-falsy-sscanf branch 2 times, most recently from 9ccd893 to 3141f68 Compare August 31, 2022 07:10
function fooo(string $s) {
// %0s returns the whole string
assertType('array{non-empty-string|null}|null', sscanf( "0" , "%0s"));
assertType('array{non-empty-string|null}|null', sscanf( "123456" , "%0s"));

@staabm staabm Aug 31, 2022

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actually for a non-falsy-string $string this line could lead to a more precise 'array{non-falsy-string|null}|null', but I feel like %0s as a format is more or less a theoretical thing.. never seen it used anywhere.. I think people would use %s instead.

I figured its not important enough to complicate the extension for it

@ondrejmirtes
ondrejmirtes merged commit 5e54dbd into phpstan:1.8.x Sep 1, 2022
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Thank you!

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staabm deleted the non-falsy-sscanf branch September 1, 2022 09:29
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2 participants