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Ensure we flush out re-assigned vars also referenced

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Fixes #4488
This commit is contained in:
Matt Brown 2020-11-06 12:51:41 -05:00 committed by Daniil Gentili
parent 57cd29ee9d
commit 578e65820a
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
3 changed files with 31 additions and 1 deletions
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2
src/Psalm/Context.php
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@ -513,7 +513,7 @@ class Context
* @param Clause[] $clauses
* @param array<string, bool> $changed_var_ids
*
* @return array{0: list<Clause>, list<Clause>}
* @return array{list<Clause>, list<Clause>}
*
* @psalm-pure
*/

11
src/Psalm/Internal/Analyzer/Statements/Expression/BinaryOp/OrAnalyzer.php
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@ -250,6 +250,9 @@ class OrAnalyzer
$pre_referenced_var_ids = $right_context->referenced_var_ids;
$right_context->referenced_var_ids = [];
$pre_assigned_var_ids = $right_context->assigned_var_ids;
$right_context->assigned_var_ids = [];
if (ExpressionAnalyzer::analyze($statements_analyzer, $stmt->right, $right_context) === false) {
return false;
}
@ -257,6 +260,9 @@ class OrAnalyzer
$right_referenced_var_ids = $right_context->referenced_var_ids;
$right_context->referenced_var_ids = array_merge($pre_referenced_var_ids, $right_referenced_var_ids);
$right_assigned_var_ids = $right_context->assigned_var_ids;
$right_context->assigned_var_ids = array_merge($pre_assigned_var_ids, $right_assigned_var_ids);
$right_cond_id = \spl_object_id($stmt->right);
$right_clauses = FormulaGenerator::getFormula(
@ -268,6 +274,11 @@ class OrAnalyzer
$codebase
);
$clauses_for_right_analysis = Context::removeReconciledClauses(
$clauses_for_right_analysis,
$right_assigned_var_ids
)[0];
$combined_right_clauses = Algebra::simplifyCNF(
array_merge($clauses_for_right_analysis, $right_clauses)
);

19
tests/TypeReconciliation/AssignmentInConditionalTest.php
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@ -430,6 +430,25 @@ class AssignmentInConditionalTest extends \Psalm\Tests\TestCase
echo $a;
}',
],
'assignmentInBranchWithReference' => [
'<?php
class A {}
function getAOrFalse(bool $b) : A|false {
return false;
}
function foo(A|false $a): void
{
if ($a instanceof A
|| ($a = getAOrFalse($a))
) {
}
}',
[],
[],
'8.0'
],
];
}