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Fix #4549 Better intersection between parent types (#4560)

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Thomas Mauro Vargiu 2020-11-16 02:29:49 +01:00 committed by GitHub
parent 5df2b771aa
commit 4e8fb9c37f
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1 changed files with 13 additions and 5 deletions
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18
src/Psalm/Internal/Codebase/Methods.php
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@ -779,11 +779,19 @@ class Methods
if ((!$old_contained_by_new && !$new_contained_by_old)
|| ($old_contained_by_new && $new_contained_by_old)
) {
$attempted_intersection = Type::intersectUnionTypes(
$overridden_storage->return_type,
$candidate_type,
$source_analyzer->getCodebase()
);
if ($old_contained_by_new && $new_contained_by_old) {
$attempted_intersection = Type::intersectUnionTypes(
$candidate_type,
$overridden_storage->return_type,
$source_analyzer->getCodebase()
);
} else {
$attempted_intersection = Type::intersectUnionTypes(
$overridden_storage->return_type,
$candidate_type,
$source_analyzer->getCodebase()
);
}
if ($attempted_intersection) {
$self_class = $overridden_method_id->fq_class_name;