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Add BitwiseNot and BooleanNot operators to SimpleTypeInferer #8360

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merged 3 commits into from Aug 4, 2022
Merged

Add BitwiseNot and BooleanNot operators to SimpleTypeInferer #8360

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f782313
Add BitwiseNot and BooleanNot operators to SimpleTypeInferer. Should …
bitwise-operators Aug 3, 2022
a5c550c
Fix incorrect handling of null response
bitwise-operators Aug 3, 2022
9f6ce30
tests: added tests for bitwise-and, bitwise-xor, bitwise-not and bool…
bitwise-operators Aug 4, 2022
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55 changes: 55 additions & 0 deletions src/Psalm/Internal/Analyzer/Statements/Expression/SimpleTypeInferer.php
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Expand Up @@ -203,6 +203,61 @@ public static function infer(
}
}

if ($stmt instanceof PhpParser\Node\Expr\BitwiseNot) {
$stmt_expr_type = self::infer(
$codebase,
$nodes,
$stmt->expr,
$aliases,
$file_source,
$existing_class_constants,
$fq_classlike_name
);

if ($stmt_expr_type === null) {
return null;
}

$invalidTypes = clone $stmt_expr_type;
$invalidTypes->removeType('string');
$invalidTypes->removeType('int');
$invalidTypes->removeType('float');
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if (!$invalidTypes->isUnionEmpty()) {
return null;
}
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$types = [];
if ($stmt_expr_type->hasString()) {
$types[] = Type::getString();
}
if ($stmt_expr_type->hasInt() || $stmt_expr_type->hasFloat()) {
$types[] = Type::getInt();
}

return $types ? Type::combineUnionTypeArray($types, null) : null;
}

if ($stmt instanceof PhpParser\Node\Expr\BooleanNot) {
$stmt_expr_type = self::infer(
$codebase,
$nodes,
$stmt->expr,
$aliases,
$file_source,
$existing_class_constants,
$fq_classlike_name
);

if ($stmt_expr_type === null || $stmt_expr_type->isAlwaysFalsy()) {
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return Type::getTrue();
} elseif ($stmt_expr_type->isAlwaysTruthy()) {
return Type::getFalse();
} else {
return Type::getBool();
}
}

if ($stmt instanceof PhpParser\Node\Expr\ConstFetch) {
$name = strtolower($stmt->name->parts[0]);
if ($name === 'false') {
Expand Down