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TypeSpecifier: Narrow (float) $expr like $expr != false #3391

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Merged
merged 1 commit into from
Sep 3, 2024
Merged

TypeSpecifier: Narrow (float) $expr like $expr != false #3391

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1 change: 1 addition & 0 deletions src/Analyser/TypeSpecifier.php
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Original file line number Diff line number Diff line change
Expand Up @@ -198,6 +198,7 @@ public function specifyTypesInCondition(
);
} elseif (
$expr instanceof Expr\Cast\String_
|| $expr instanceof Expr\Cast\Double
|| $expr instanceof Expr\Cast\Int_
|| $expr instanceof Expr\Cast\Bool_
) {
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21 changes: 21 additions & 0 deletions tests/PHPStan/Analyser/nsrt/narrow-cast.php
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Original file line number Diff line number Diff line change
Expand Up @@ -69,3 +69,24 @@ function castInt($x, string $s, bool $b) {
assertType('string', $s);
}
}

/** @param int<-5, 5> $x */
function castFloat($x, string $s, bool $b) {
if ((float) $x) {
assertType('int<-5, -1>|int<1, 5>', $x);
} else {
assertType('0', $x);
}

if ((float) $b) {
assertType('true', $b);
} else {
assertType('false', $b);
}

if ((float) $s) {
assertType('non-falsy-string', $s);
} else {
assertType("''|'0'", $s);
}
}
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