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SimpleNegatedAssertionReconciler.php
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SimpleNegatedAssertionReconciler.php
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<?php
namespace Psalm\Internal\Type;
use Psalm\CodeLocation;
use Psalm\Internal\Codebase\InternalCallMapHandler;
use Psalm\Type;
use Psalm\Type\Atomic\Scalar;
use Psalm\Type\Atomic\TArray;
use Psalm\Type\Atomic\TArrayKey;
use Psalm\Type\Atomic\TBool;
use Psalm\Type\Atomic\TCallable;
use Psalm\Type\Atomic\TCallableArray;
use Psalm\Type\Atomic\TCallableObject;
use Psalm\Type\Atomic\TCallableString;
use Psalm\Type\Atomic\TFloat;
use Psalm\Type\Atomic\TGenericObject;
use Psalm\Type\Atomic\TInt;
use Psalm\Type\Atomic\TIntRange;
use Psalm\Type\Atomic\TIterable;
use Psalm\Type\Atomic\TKeyedArray;
use Psalm\Type\Atomic\TList;
use Psalm\Type\Atomic\TLiteralInt;
use Psalm\Type\Atomic\TLiteralString;
use Psalm\Type\Atomic\TLowercaseString;
use Psalm\Type\Atomic\TMixed;
use Psalm\Type\Atomic\TNamedObject;
use Psalm\Type\Atomic\TNever;
use Psalm\Type\Atomic\TNonEmptyArray;
use Psalm\Type\Atomic\TNonEmptyList;
use Psalm\Type\Atomic\TNonEmptyLowercaseString;
use Psalm\Type\Atomic\TNonEmptyMixed;
use Psalm\Type\Atomic\TNonEmptyNonspecificLiteralString;
use Psalm\Type\Atomic\TNonEmptyScalar;
use Psalm\Type\Atomic\TNonEmptyString;
use Psalm\Type\Atomic\TNonFalsyString;
use Psalm\Type\Atomic\TNonspecificLiteralString;
use Psalm\Type\Atomic\TNumeric;
use Psalm\Type\Atomic\TPositiveInt;
use Psalm\Type\Atomic\TScalar;
use Psalm\Type\Atomic\TString;
use Psalm\Type\Atomic\TTemplateParam;
use Psalm\Type\Atomic\TTrue;
use Psalm\Type\Reconciler;
use Psalm\Type\Union;
use function assert;
use function get_class;
use function max;
use function strpos;
use function substr;
class SimpleNegatedAssertionReconciler extends Reconciler
{
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
public static function reconcile(
string $assertion,
Union $existing_var_type,
?string $key = null,
bool $negated = false,
?CodeLocation $code_location = null,
array $suppressed_issues = [],
int &$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY,
bool $is_equality = false,
bool $is_strict_equality = false,
bool $inside_loop = false
): ?Union {
if ($assertion === 'object' && !$existing_var_type->hasMixed()) {
return self::reconcileObject(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'scalar' && !$existing_var_type->hasMixed()) {
return self::reconcileScalar(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'resource' && !$existing_var_type->hasMixed()) {
return self::reconcileResource(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'bool' && !$existing_var_type->hasMixed()) {
return self::reconcileBool(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'numeric' && !$existing_var_type->hasMixed()) {
return self::reconcileNumeric(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'float' && !$existing_var_type->hasMixed()) {
return self::reconcileFloat(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'int' && !$existing_var_type->hasMixed()) {
return self::reconcileInt(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'string' && !$existing_var_type->hasMixed()) {
return self::reconcileString(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'array' && !$existing_var_type->hasMixed()) {
return self::reconcileArray(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'falsy' || $assertion === 'empty') {
return self::reconcileFalsyOrEmpty(
$assertion,
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality,
$is_strict_equality,
false
);
}
if ($assertion === 'null' && !$existing_var_type->hasMixed()) {
return self::reconcileNull(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'false' && !$existing_var_type->hasMixed()) {
return self::reconcileFalse(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
}
if ($assertion === 'non-empty-countable') {
return self::reconcileNonEmptyCountable(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality,
null
);
}
if ($assertion === 'callable') {
return self::reconcileCallable(
$existing_var_type
);
}
if (strpos($assertion, 'has-at-least-') === 0) {
return self::reconcileNonEmptyCountable(
$existing_var_type,
$key,
$negated,
$code_location,
$suppressed_issues,
$failed_reconciliation,
$is_equality,
(int) substr($assertion, 13)
);
}
if (strpos($assertion, 'has-exactly-') === 0) {
return $existing_var_type;
}
if ($assertion[0] === '>') {
return self::reconcileSuperiorTo(
$existing_var_type,
substr($assertion, 1),
$inside_loop
);
}
if ($assertion[0] === '<') {
return self::reconcileInferiorTo(
$existing_var_type,
substr($assertion, 1),
$inside_loop
);
}
return null;
}
private static function reconcileCallable(
Union $existing_var_type
): Union {
foreach ($existing_var_type->getAtomicTypes() as $atomic_key => $type) {
if ($type instanceof TLiteralString
&& InternalCallMapHandler::inCallMap($type->value)
) {
$existing_var_type->removeType($atomic_key);
}
if ($type->isCallableType()) {
$existing_var_type->removeType($atomic_key);
}
}
return $existing_var_type;
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileBool(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$non_bool_types = [];
$did_remove_type = false;
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
if (!$type->as->hasBool()) {
$non_bool_types[] = $type;
}
$did_remove_type = true;
} elseif (!$type instanceof TBool
|| ($is_equality && get_class($type) === TBool::class)
) {
if ($type instanceof TScalar) {
$did_remove_type = true;
$non_bool_types[] = new TString();
$non_bool_types[] = new TInt();
$non_bool_types[] = new TFloat();
} else {
$non_bool_types[] = $type;
}
} else {
$did_remove_type = true;
}
}
if (!$did_remove_type || !$non_bool_types) {
if ($key && $code_location && !$is_equality) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!bool',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
if (!$did_remove_type) {
$failed_reconciliation = Reconciler::RECONCILIATION_REDUNDANT;
}
}
if ($non_bool_types) {
return new Union($non_bool_types);
}
$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY;
return Type::getMixed();
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileNonEmptyCountable(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality,
?int $min_count
): Union {
$old_var_type_string = $existing_var_type->getId();
$existing_var_atomic_types = $existing_var_type->getAtomicTypes();
if (isset($existing_var_atomic_types['array'])) {
$array_atomic_type = $existing_var_atomic_types['array'];
$did_remove_type = false;
if (($array_atomic_type instanceof TNonEmptyArray
|| $array_atomic_type instanceof TNonEmptyList)
&& ($min_count === null
|| $array_atomic_type->count >= $min_count)
) {
$did_remove_type = true;
$existing_var_type->removeType('array');
} elseif ($array_atomic_type->getId() !== 'array<never, never>') {
$did_remove_type = true;
if (!$min_count) {
$existing_var_type->addType(new TArray(
[
new Union([new TNever()]),
new Union([new TNever()]),
]
));
}
} elseif ($array_atomic_type instanceof TKeyedArray) {
$did_remove_type = true;
foreach ($array_atomic_type->properties as $property_type) {
if (!$property_type->possibly_undefined) {
$did_remove_type = false;
break;
}
}
}
if (!$is_equality
&& !$existing_var_type->hasMixed()
&& (!$did_remove_type || empty($existing_var_type->getAtomicTypes()))
) {
if ($key && $code_location) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!non-empty-countable',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
}
}
return $existing_var_type;
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileNull(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$did_remove_type = false;
if ($existing_var_type->hasType('null')) {
$did_remove_type = true;
$existing_var_type->removeType('null');
}
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
$type->as = self::reconcileNull(
$type->as,
null,
false,
null,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
$did_remove_type = true;
$existing_var_type->bustCache();
}
}
if (!$did_remove_type || empty($existing_var_type->getAtomicTypes())) {
if ($key && $code_location && !$is_equality) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!null',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
if (!$did_remove_type) {
$failed_reconciliation = Reconciler::RECONCILIATION_REDUNDANT;
}
}
/** @psalm-suppress RedundantCondition can be empty after removing above */
if ($existing_var_type->getAtomicTypes()) {
return $existing_var_type;
}
$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY;
return Type::getMixed();
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileFalse(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$did_remove_type = $existing_var_type->hasScalar();
if ($existing_var_type->hasType('false')) {
$did_remove_type = true;
$existing_var_type->removeType('false');
}
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
$type->as = self::reconcileFalse(
$type->as,
null,
false,
null,
$suppressed_issues,
$failed_reconciliation,
$is_equality
);
$did_remove_type = true;
$existing_var_type->bustCache();
}
}
if (!$did_remove_type || empty($existing_var_type->getAtomicTypes())) {
if ($key && $code_location && !$is_equality) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!false',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
if (!$did_remove_type) {
$failed_reconciliation = Reconciler::RECONCILIATION_REDUNDANT;
}
}
/** @psalm-suppress RedundantCondition can be empty after removing above */
if ($existing_var_type->getAtomicTypes()) {
return $existing_var_type;
}
$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY;
return Type::getMixed();
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileFalsyOrEmpty(
string $assertion,
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality,
bool $is_strict_equality,
bool $recursive_check
): Union {
$old_var_type_string = $existing_var_type->getId();
//empty is used a lot to check for array offset existence, so we have to silent errors a lot
$is_empty_assertion = $assertion === 'empty';
$did_remove_type = $existing_var_type->possibly_undefined
|| $existing_var_type->possibly_undefined_from_try;
foreach ($existing_var_type->getAtomicTypes() as $existing_var_type_key => $existing_var_type_part) {
//if any atomic in the union is either always falsy, we remove it. If not always truthy, we mark the check
//as not redundant.
$union = new Union([$existing_var_type_part]);
$union->possibly_undefined = $existing_var_type->possibly_undefined;
$union->possibly_undefined_from_try = $existing_var_type->possibly_undefined_from_try;
if ($union->isAlwaysFalsy()) {
$did_remove_type = true;
$existing_var_type->removeType($existing_var_type_key);
} elseif (!$union->isAlwaysTruthy()) {
$did_remove_type = true;
}
}
if ($did_remove_type && $existing_var_type->getAtomicTypes() === []) {
//every type was removed, this is an impossible assertion
if ($code_location && $key && !$is_empty_assertion && !$recursive_check) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!' . $assertion,
false,
$negated,
$code_location,
$suppressed_issues
);
}
$failed_reconciliation = 2;
return Type::getNever();
}
if (!$did_remove_type) {
if ($code_location && $key && !$is_empty_assertion && !$recursive_check) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!' . $assertion,
true,
$negated,
$code_location,
$suppressed_issues
);
}
$failed_reconciliation = 1;
return $existing_var_type;
}
$existing_var_type->possibly_undefined = false;
$existing_var_type->possibly_undefined_from_try = false;
if ($existing_var_type->hasType('bool')) {
$existing_var_type->removeType('bool');
$existing_var_type->addType(new TTrue());
}
if ($existing_var_type->hasArray()) {
$array_atomic_type = $existing_var_type->getAtomicTypes()['array'];
if ($array_atomic_type instanceof TArray
&& !$array_atomic_type instanceof TNonEmptyArray
) {
$existing_var_type->removeType('array');
$existing_var_type->addType(
new TNonEmptyArray(
$array_atomic_type->type_params
)
);
} elseif ($array_atomic_type instanceof TList
&& !$array_atomic_type instanceof TNonEmptyList
) {
$existing_var_type->removeType('array');
$existing_var_type->addType(
new TNonEmptyList(
$array_atomic_type->type_param
)
);
}
}
if ($existing_var_type->hasMixed()) {
$mixed_atomic_type = $existing_var_type->getAtomicTypes()['mixed'];
if (get_class($mixed_atomic_type) === TMixed::class) {
$existing_var_type->removeType('mixed');
$existing_var_type->addType(new TNonEmptyMixed());
}
}
if ($existing_var_type->hasScalar()) {
$scalar_atomic_type = $existing_var_type->getAtomicTypes()['scalar'];
if (get_class($scalar_atomic_type) === TScalar::class) {
$existing_var_type->removeType('scalar');
$existing_var_type->addType(new TNonEmptyScalar());
}
}
if ($existing_var_type->hasType('string')) {
$string_atomic_type = $existing_var_type->getAtomicTypes()['string'];
if (get_class($string_atomic_type) === TString::class) {
$existing_var_type->removeType('string');
$existing_var_type->addType(new TNonFalsyString());
} elseif (get_class($string_atomic_type) === TLowercaseString::class) {
$existing_var_type->removeType('string');
$existing_var_type->addType(new TNonEmptyLowercaseString());
} elseif (get_class($string_atomic_type) === TNonspecificLiteralString::class) {
$existing_var_type->removeType('string');
$existing_var_type->addType(new TNonEmptyNonspecificLiteralString());
} elseif (get_class($string_atomic_type) === TNonEmptyString::class) {
$existing_var_type->removeType('string');
$existing_var_type->addType(new TNonFalsyString());
}
}
if ($existing_var_type->hasInt()) {
$existing_range_types = $existing_var_type->getRangeInts();
if ($existing_range_types) {
foreach ($existing_range_types as $int_key => $literal_type) {
if ($literal_type->contains(0)) {
$existing_var_type->removeType($int_key);
if ($literal_type->min_bound === null || $literal_type->min_bound <= -1) {
$existing_var_type->addType(new TIntRange($literal_type->min_bound, -1));
}
if ($literal_type->max_bound === null || $literal_type->max_bound >= 1) {
$existing_var_type->addType(new TIntRange(1, $literal_type->max_bound));
}
}
}
}
if ($existing_var_type->isSingle()) {
return $existing_var_type;
}
}
foreach ($existing_var_type->getAtomicTypes() as $type_key => $existing_var_atomic_type) {
if ($existing_var_atomic_type instanceof TTemplateParam) {
if (!$is_equality && !$existing_var_atomic_type->as->isMixed()) {
$template_did_fail = 0;
$existing_var_atomic_type = clone $existing_var_atomic_type;
$existing_var_atomic_type->as = self::reconcileFalsyOrEmpty(
$assertion,
$existing_var_atomic_type->as,
$key,
$negated,
$code_location,
$suppressed_issues,
$template_did_fail,
$is_equality,
$is_strict_equality,
true
);
if (!$template_did_fail) {
$existing_var_type->removeType($type_key);
$existing_var_type->addType($existing_var_atomic_type);
}
}
}
}
/** @psalm-suppress RedundantCondition safety check in case we removed something that shouldn't be removed */
assert($existing_var_type->getAtomicTypes() !== []);
return $existing_var_type;
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileScalar(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$non_scalar_types = [];
$did_remove_type = false;
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
if (!$is_equality && !$type->as->isMixed()) {
$template_did_fail = 0;
$type = clone $type;
$type->as = self::reconcileScalar(
$type->as,
null,
false,
null,
$suppressed_issues,
$template_did_fail,
$is_equality
);
$did_remove_type = true;
if (!$template_did_fail) {
$non_scalar_types[] = $type;
}
} else {
$did_remove_type = true;
$non_scalar_types[] = $type;
}
} elseif (!($type instanceof Scalar)) {
$non_scalar_types[] = $type;
} else {
$did_remove_type = true;
if ($is_equality) {
$non_scalar_types[] = $type;
}
}
}
if (!$did_remove_type || !$non_scalar_types) {
if ($key && $code_location) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!scalar',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
if (!$did_remove_type) {
$failed_reconciliation = Reconciler::RECONCILIATION_REDUNDANT;
}
}
if ($non_scalar_types) {
$type = new Union($non_scalar_types);
$type->ignore_falsable_issues = $existing_var_type->ignore_falsable_issues;
$type->ignore_nullable_issues = $existing_var_type->ignore_nullable_issues;
$type->from_docblock = $existing_var_type->from_docblock;
return $type;
}
$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY;
return Type::getMixed();
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileObject(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$non_object_types = [];
$did_remove_type = false;
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
if (!$is_equality && !$type->as->isMixed()) {
$template_did_fail = 0;
$type = clone $type;
$type->as = self::reconcileObject(
$type->as,
null,
false,
null,
$suppressed_issues,
$template_did_fail,
$is_equality
);
$did_remove_type = true;
if (!$template_did_fail) {
$non_object_types[] = $type;
}
} else {
$did_remove_type = true;
$non_object_types[] = $type;
}
} elseif ($type instanceof TCallable) {
$non_object_types[] = new TCallableArray([
Type::getArrayKey(),
Type::getMixed()
]);
$non_object_types[] = new TCallableString();
$did_remove_type = true;
} elseif ($type instanceof TIterable) {
$clone_type = clone $type;
self::refineArrayKey($clone_type->type_params[0]);
$non_object_types[] = new TArray($clone_type->type_params);
$did_remove_type = true;
} elseif (!$type->isObjectType()) {
$non_object_types[] = $type;
} else {
$did_remove_type = true;
if ($is_equality) {
$non_object_types[] = $type;
}
}
}
if (!$non_object_types || !$did_remove_type) {
if ($key && $code_location) {
self::triggerIssueForImpossible(
$existing_var_type,
$old_var_type_string,
$key,
'!object',
!$did_remove_type,
$negated,
$code_location,
$suppressed_issues
);
}
if (!$did_remove_type) {
$failed_reconciliation = Reconciler::RECONCILIATION_REDUNDANT;
}
}
if ($non_object_types) {
$type = new Union($non_object_types);
$type->ignore_falsable_issues = $existing_var_type->ignore_falsable_issues;
$type->ignore_nullable_issues = $existing_var_type->ignore_nullable_issues;
$type->from_docblock = $existing_var_type->from_docblock;
return $type;
}
$failed_reconciliation = Reconciler::RECONCILIATION_EMPTY;
return Type::getMixed();
}
/**
* @param string[] $suppressed_issues
* @param 0|1|2 $failed_reconciliation
*/
private static function reconcileNumeric(
Union $existing_var_type,
?string $key,
bool $negated,
?CodeLocation $code_location,
array $suppressed_issues,
int &$failed_reconciliation,
bool $is_equality
): Union {
$old_var_type_string = $existing_var_type->getId();
$non_numeric_types = [];
$did_remove_type = $existing_var_type->hasString()
|| $existing_var_type->hasScalar();
foreach ($existing_var_type->getAtomicTypes() as $type) {
if ($type instanceof TTemplateParam) {
if (!$is_equality && !$type->as->isMixed()) {
$template_did_fail = 0;
$type = clone $type;
$type->as = self::reconcileNumeric(
$type->as,
null,
false,
null,
$suppressed_issues,
$template_did_fail,
$is_equality
);
$did_remove_type = true;
if (!$template_did_fail) {
$non_numeric_types[] = $type;
}
} else {
$did_remove_type = true;
$non_numeric_types[] = $type;
}
} elseif ($type instanceof TArrayKey) {
$did_remove_type = true;
$non_numeric_types[] = new TString();
} elseif (!$type->isNumericType()) {