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Fix #4132 - ignore purity of $this when checking for initialisation

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Brown 2020-09-04 16:46:20 -04:00 committed by Daniil Gentili
parent 7e6a3c7b55
commit be3d130965
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
2 changed files with 36 additions and 13 deletions
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28
src/Psalm/Internal/Analyzer/Statements/Expression/Fetch/VariableFetchAnalyzer.php
View File

@ -102,20 +102,22 @@ class VariableFetchAnalyzer
); );
} }
if ($context->pure) { if (!$context->collect_mutations && !$context->collect_initializations) {
if (IssueBuffer::accepts( if ($context->pure) {
new ImpureVariable( if (IssueBuffer::accepts(
'Cannot reference $this in a pure context', new ImpureVariable(
new CodeLocation($statements_analyzer->getSource(), $stmt) 'Cannot reference $this in a pure context',
), new CodeLocation($statements_analyzer->getSource(), $stmt)
$statements_analyzer->getSuppressedIssues() ),
)) { $statements_analyzer->getSuppressedIssues()
// fall through )) {
// fall through
}
} elseif ($statements_analyzer->getSource() instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer
&& $statements_analyzer->getSource()->track_mutations
) {
$statements_analyzer->getSource()->inferred_impure = true;
} }
} elseif ($statements_analyzer->getSource() instanceof \Psalm\Internal\Analyzer\FunctionLikeAnalyzer
&& $statements_analyzer->getSource()->track_mutations
) {
$statements_analyzer->getSource()->inferred_impure = true;
} }
return true; return true;

21
tests/PureAnnotationTest.php
View File

@ -387,6 +387,27 @@ class PureAnnotationTest extends TestCase
return false; return false;
}', }',
], ],
'allowPureInConstrucctorThis' => [
'<?php
class Port {
private int $portNumber;
public function __construct(int $portNumber) {
if (!$this->isValidPort($portNumber)) {
throw new Exception();
}
$this->portNumber = $portNumber;
}
/**
* @psalm-pure
*/
private function isValidPort(int $portNumber): bool {
return $portNumber >= 1 && $portNumber <= 1000;
}
}'
],
]; ];
} }