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Memoize coalesce expression in more scenarios

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Matt Brown 2020-12-02 02:15:17 -05:00 committed by Daniil Gentili
parent 7cc0f65f11
commit fd7afc9c40
Signed by: danog
GPG Key ID: 8C1BE3B34B230CA7
1 changed files with 16 additions and 4 deletions
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20
src/Psalm/Internal/Analyzer/Statements/Expression/BinaryOp/CoalesceAnalyzer.php
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@ -20,10 +20,18 @@ class CoalesceAnalyzer
) : bool {
$left_expr = $stmt->left;
if ($left_expr instanceof PhpParser\Node\Expr\FuncCall
|| $left_expr instanceof PhpParser\Node\Expr\MethodCall
|| $left_expr instanceof PhpParser\Node\Expr\StaticCall
|| $left_expr instanceof PhpParser\Node\Expr\Cast
$root_expr = $left_expr;
while ($root_expr instanceof PhpParser\Node\Expr\ArrayDimFetch
|| $root_expr instanceof PhpParser\Node\Expr\PropertyFetch
) {
$root_expr = $root_expr->var;
}
if ($root_expr instanceof PhpParser\Node\Expr\FuncCall
|| $root_expr instanceof PhpParser\Node\Expr\MethodCall
|| $root_expr instanceof PhpParser\Node\Expr\StaticCall
|| $root_expr instanceof PhpParser\Node\Expr\Cast
) {
$left_var_id = '$<tmp coalesce var>' . (int) $left_expr->getAttribute('startFilePos');
@ -31,6 +39,10 @@ class CoalesceAnalyzer
$condition_type = $statements_analyzer->node_data->getType($left_expr) ?: Type::getMixed();
if ($root_expr !== $left_expr) {
$condition_type->possibly_undefined = true;
}
$context->vars_in_scope[$left_var_id] = $condition_type;
$left_expr = new PhpParser\Node\Expr\Variable(