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TypeCombiner.php
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TypeCombiner.php
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<?php
namespace Psalm\Internal\Type;
use InvalidArgumentException;
use Psalm\Codebase;
use Psalm\Type;
use Psalm\Type\Atomic;
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\TCallableKeyedArray;
use Psalm\Type\Atomic\TCallableObject;
use Psalm\Type\Atomic\TCallableString;
use Psalm\Type\Atomic\TClassString;
use Psalm\Type\Atomic\TClassStringMap;
use Psalm\Type\Atomic\TEmpty;
use Psalm\Type\Atomic\TEmptyMixed;
use Psalm\Type\Atomic\TFalse;
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\TLiteralClassString;
use Psalm\Type\Atomic\TLiteralFloat;
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\TNonEmptyString;
use Psalm\Type\Atomic\TNonFalsyString;
use Psalm\Type\Atomic\TNonspecificLiteralInt;
use Psalm\Type\Atomic\TNonspecificLiteralString;
use Psalm\Type\Atomic\TNull;
use Psalm\Type\Atomic\TNumericString;
use Psalm\Type\Atomic\TObject;
use Psalm\Type\Atomic\TObjectWithProperties;
use Psalm\Type\Atomic\TPositiveInt;
use Psalm\Type\Atomic\TScalar;
use Psalm\Type\Atomic\TString;
use Psalm\Type\Atomic\TTemplateParam;
use Psalm\Type\Atomic\TTemplateParamClass;
use Psalm\Type\Atomic\TTrue;
use Psalm\Type\Union;
use UnexpectedValueException;
use function array_filter;
use function array_intersect_key;
use function array_key_exists;
use function array_keys;
use function array_merge;
use function array_values;
use function count;
use function get_class;
use function is_int;
use function is_numeric;
use function strpos;
use function strtolower;
use function substr;
class TypeCombiner
{
/**
* Combines types together
* - so `int + string = int|string`
* - so `array<int> + array<string> = array<int|string>`
* - and `array<int> + string = array<int>|string`
* - and `array<empty> + array<empty> = array<empty>`
* - and `array<string> + array<empty> = array<string>`
* - and `array + array<string> = array<mixed>`
*
* @param non-empty-list<Atomic> $types
* @param int $literal_limit any greater number of literal types than this
* will be merged to a scalar
*
*/
public static function combine(
array $types,
?Codebase $codebase = null,
bool $overwrite_empty_array = false,
bool $allow_mixed_union = true,
int $literal_limit = 500
): Union {
if (count($types) === 1) {
$union_type = new Union([$types[0]]);
if ($types[0]->from_docblock) {
$union_type->from_docblock = true;
}
return $union_type;
}
$combination = new TypeCombination();
$from_docblock = false;
foreach ($types as $type) {
$from_docblock = $from_docblock || $type->from_docblock;
$result = self::scrapeTypeProperties(
$type,
$combination,
$codebase,
$overwrite_empty_array,
$allow_mixed_union,
$literal_limit
);
if ($result) {
if ($from_docblock) {
$result->from_docblock = true;
}
return $result;
}
}
if (count($combination->value_types) === 1
&& !count($combination->objectlike_entries)
&& !$combination->array_type_params
&& !$combination->builtin_type_params
&& !$combination->object_type_params
&& !$combination->named_object_types
&& !$combination->strings
&& !$combination->class_string_types
&& !$combination->ints
&& !$combination->floats
) {
if (isset($combination->value_types['false'])) {
$union_type = Type::getFalse();
if ($from_docblock) {
$union_type->from_docblock = true;
}
return $union_type;
}
if (isset($combination->value_types['true'])) {
$union_type = Type::getTrue();
if ($from_docblock) {
$union_type->from_docblock = true;
}
return $union_type;
}
} elseif (isset($combination->value_types['void'])) {
unset($combination->value_types['void']);
// if we're merging with another type, we cannot represent it in PHP
$from_docblock = true;
if (!isset($combination->value_types['null'])) {
$combination->value_types['null'] = new TNull();
}
}
if (isset($combination->value_types['true']) && isset($combination->value_types['false'])) {
unset($combination->value_types['true'], $combination->value_types['false']);
$combination->value_types['bool'] = new TBool();
}
if ($combination->array_type_params
&& (isset($combination->named_object_types['Traversable'])
|| isset($combination->builtin_type_params['Traversable']))
&& (
isset($combination->builtin_type_params['Traversable'])
|| (isset($combination->named_object_types['Traversable'])
&& $combination->named_object_types['Traversable']->from_docblock)
)
&& !$combination->extra_types
) {
$array_param_types = $combination->array_type_params;
$traversable_param_types = $combination->builtin_type_params['Traversable']
?? [Type::getMixed(), Type::getMixed()];
$combined_param_types = [];
foreach ($array_param_types as $i => $array_param_type) {
$combined_param_types[] = Type::combineUnionTypes($array_param_type, $traversable_param_types[$i]);
}
$combination->value_types['iterable'] = new TIterable($combined_param_types);
$combination->array_type_params = [];
/**
* @psalm-suppress PossiblyNullArrayAccess
*/
unset(
$combination->value_types['array'],
$combination->named_object_types['Traversable'],
$combination->builtin_type_params['Traversable']
);
}
if ($combination->empty_mixed && $combination->non_empty_mixed) {
$combination->value_types['mixed'] = new TMixed((bool) $combination->mixed_from_loop_isset);
}
$new_types = [];
if ($combination->objectlike_entries) {
$new_types = self::handleKeyedArrayEntries(
$combination,
$overwrite_empty_array
);
}
if ($combination->array_type_params) {
if (count($combination->array_type_params) !== 2) {
throw new UnexpectedValueException('Unexpected number of parameters');
}
$new_types[] = self::getArrayTypeFromGenericParams(
$codebase,
$combination,
$overwrite_empty_array,
$allow_mixed_union,
$type,
$combination->array_type_params
);
}
if ($combination->extra_types) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->extra_types = self::combine(
array_values($combination->extra_types),
$codebase
)->getAtomicTypes();
}
foreach ($combination->builtin_type_params as $generic_type => $generic_type_params) {
if ($generic_type === 'iterable') {
$new_types[] = new TIterable($generic_type_params);
} else {
$generic_object = new TGenericObject($generic_type, $generic_type_params);
/** @psalm-suppress PropertyTypeCoercion */
$generic_object->extra_types = $combination->extra_types;
$new_types[] = $generic_object;
if ($combination->named_object_types) {
unset($combination->named_object_types[$generic_type]);
}
}
}
foreach ($combination->object_type_params as $generic_type => $generic_type_params) {
$generic_type = substr($generic_type, 0, (int) strpos($generic_type, '<'));
$generic_object = new TGenericObject($generic_type, $generic_type_params);
if ($combination->object_static[$generic_type] ?? false) {
$generic_object->was_static = true;
}
/** @psalm-suppress PropertyTypeCoercion */
$generic_object->extra_types = $combination->extra_types;
$new_types[] = $generic_object;
}
if ($combination->class_string_types) {
if ($combination->strings) {
foreach ($combination->strings as $k => $string) {
if ($string instanceof TLiteralClassString) {
$combination->class_string_types[$string->value] = new TNamedObject($string->value);
unset($combination->strings[$k]);
}
}
}
$has_non_specific_string = isset($combination->value_types['string'])
&& get_class($combination->value_types['string']) === TString::class;
if (!$has_non_specific_string) {
$object_type = self::combine(
array_values($combination->class_string_types),
$codebase
);
foreach ($object_type->getAtomicTypes() as $object_atomic_type) {
if ($object_atomic_type instanceof TNamedObject) {
$new_types[] = new TClassString($object_atomic_type->value, $object_atomic_type);
} elseif ($object_atomic_type instanceof TObject) {
$new_types[] = new TClassString();
}
}
}
}
if ($combination->strings) {
$new_types = array_merge($new_types, array_values($combination->strings));
}
if ($combination->ints) {
$new_types = array_merge($new_types, array_values($combination->ints));
}
if ($combination->floats) {
$new_types = array_merge($new_types, array_values($combination->floats));
}
if (isset($combination->value_types['string'])
&& isset($combination->value_types['int'])
&& isset($combination->value_types['bool'])
&& isset($combination->value_types['float'])
) {
unset(
$combination->value_types['string'],
$combination->value_types['int'],
$combination->value_types['bool'],
$combination->value_types['float']
);
$combination->value_types['scalar'] = new TScalar;
}
if ($combination->named_object_types !== null) {
$combination->value_types += $combination->named_object_types;
}
$has_empty = (int) isset($combination->value_types['empty']);
$has_never = false;
foreach ($combination->value_types as $type) {
if ($type instanceof TMixed
&& $combination->mixed_from_loop_isset
&& (count($combination->value_types) > (1 + $has_empty) || count($new_types) > $has_empty)
) {
continue;
}
if (($type instanceof TEmpty || $type instanceof TNever)
&& (count($combination->value_types) > 1 || count($new_types))
) {
$has_never = true;
continue;
}
$new_types[] = $type;
}
if (!$new_types && !$has_never) {
throw new UnexpectedValueException('There should be types here');
} elseif (!$new_types && $has_never) {
$union_type = Type::getNever();
} else {
$union_type = new Union($new_types);
}
if ($from_docblock) {
$union_type->from_docblock = true;
}
return $union_type;
}
private static function scrapeTypeProperties(
Atomic $type,
TypeCombination $combination,
?Codebase $codebase,
bool $overwrite_empty_array,
bool $allow_mixed_union,
int $literal_limit
): ?Union {
if ($type instanceof TMixed) {
if ($type->from_loop_isset) {
if ($combination->mixed_from_loop_isset === null) {
$combination->mixed_from_loop_isset = true;
} else {
return null;
}
} else {
$combination->mixed_from_loop_isset = false;
}
if ($type instanceof TNonEmptyMixed) {
$combination->non_empty_mixed = true;
if ($combination->empty_mixed) {
return null;
}
} elseif ($type instanceof TEmptyMixed) {
$combination->empty_mixed = true;
if ($combination->non_empty_mixed) {
return null;
}
} else {
$combination->empty_mixed = true;
$combination->non_empty_mixed = true;
}
if (!$allow_mixed_union) {
return Type::getMixed($combination->mixed_from_loop_isset);
}
}
// deal with false|bool => bool
if (($type instanceof TFalse || $type instanceof TTrue) && isset($combination->value_types['bool'])) {
return null;
}
if (get_class($type) === TBool::class && isset($combination->value_types['false'])) {
unset($combination->value_types['false']);
}
if (get_class($type) === TBool::class && isset($combination->value_types['true'])) {
unset($combination->value_types['true']);
}
if ($type instanceof TArray && isset($combination->builtin_type_params['iterable'])) {
$type_key = 'iterable';
} elseif ($type instanceof TArray
&& $type->type_params[1]->isMixed()
&& isset($combination->value_types['iterable'])
) {
$type_key = 'iterable';
$combination->builtin_type_params['iterable'] = [Type::getMixed(), Type::getMixed()];
} elseif ($type instanceof TNamedObject
&& $type->value === 'Traversable'
&& (isset($combination->builtin_type_params['iterable']) || isset($combination->value_types['iterable']))
) {
$type_key = 'iterable';
if (!isset($combination->builtin_type_params['iterable'])) {
$combination->builtin_type_params['iterable'] = [Type::getMixed(), Type::getMixed()];
}
if (!$type instanceof TGenericObject) {
$type = new TGenericObject($type->value, [Type::getMixed(), Type::getMixed()]);
}
} elseif ($type instanceof TNamedObject && ($type->value === 'Traversable' || $type->value === 'Generator')) {
$type_key = $type->value;
} else {
$type_key = $type->getKey();
}
if ($type instanceof TIterable
&& $combination->array_type_params
&& ($type->has_docblock_params || $combination->array_type_params[1]->isMixed())
) {
if (!isset($combination->builtin_type_params['iterable'])) {
$combination->builtin_type_params['iterable'] = $combination->array_type_params;
} else {
foreach ($combination->array_type_params as $i => $array_type_param) {
$iterable_type_param = $combination->builtin_type_params['iterable'][$i];
/** @psalm-suppress PropertyTypeCoercion */
$combination->builtin_type_params['iterable'][$i] = Type::combineUnionTypes(
$iterable_type_param,
$array_type_param
);
}
}
$combination->array_type_params = [];
}
if ($type instanceof TIterable
&& (isset($combination->named_object_types['Traversable'])
|| isset($combination->builtin_type_params['Traversable']))
) {
if (!isset($combination->builtin_type_params['iterable'])) {
$combination->builtin_type_params['iterable']
= $combination->builtin_type_params['Traversable'] ?? [Type::getMixed(), Type::getMixed()];
} elseif (isset($combination->builtin_type_params['Traversable'])) {
foreach ($combination->builtin_type_params['Traversable'] as $i => $array_type_param) {
$iterable_type_param = $combination->builtin_type_params['iterable'][$i];
/** @psalm-suppress PropertyTypeCoercion */
$combination->builtin_type_params['iterable'][$i] = Type::combineUnionTypes(
$iterable_type_param,
$array_type_param
);
}
} else {
$combination->builtin_type_params['iterable'] = [Type::getMixed(), Type::getMixed()];
}
/** @psalm-suppress PossiblyNullArrayAccess */
unset(
$combination->named_object_types['Traversable'],
$combination->builtin_type_params['Traversable']
);
}
if ($type instanceof TNamedObject
|| $type instanceof TTemplateParam
|| $type instanceof TIterable
|| $type instanceof TObjectWithProperties
) {
if ($type->extra_types) {
$combination->extra_types = array_merge(
$combination->extra_types ?: [],
$type->extra_types
);
}
}
if ($type instanceof TNamedObject) {
if (array_key_exists($type->value, $combination->object_static)) {
if ($combination->object_static[$type->value] && !$type->was_static) {
$combination->object_static[$type->value] = false;
}
} else {
$combination->object_static[$type->value] = $type->was_static;
}
}
if ($type instanceof TArray && $type_key === 'array') {
if ($type instanceof TCallableArray && isset($combination->value_types['callable'])) {
return null;
}
foreach ($type->type_params as $i => $type_param) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->array_type_params[$i] = Type::combineUnionTypes(
$combination->array_type_params[$i] ?? null,
$type_param,
$codebase,
$overwrite_empty_array
);
}
if ($type instanceof TNonEmptyArray) {
if ($combination->array_counts !== null) {
if ($type->count === null) {
$combination->array_counts = null;
} else {
$combination->array_counts[$type->count] = true;
}
}
$combination->array_sometimes_filled = true;
} else {
$combination->array_always_filled = false;
}
if (!$type->type_params[1]->isEmpty()) {
$combination->all_arrays_lists = false;
$combination->all_arrays_class_string_maps = false;
}
if ($type instanceof TCallableArray) {
if ($combination->all_arrays_callable !== false) {
$combination->all_arrays_callable = true;
}
} else {
$combination->all_arrays_callable = false;
}
return null;
}
if ($type instanceof TList) {
foreach ([Type::getInt(), $type->type_param] as $i => $type_param) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->array_type_params[$i] = Type::combineUnionTypes(
$combination->array_type_params[$i] ?? null,
$type_param,
$codebase,
$overwrite_empty_array
);
}
if ($type instanceof TNonEmptyList) {
if ($combination->array_counts !== null) {
if ($type->count === null) {
$combination->array_counts = null;
} else {
$combination->array_counts[$type->count] = true;
}
}
$combination->array_sometimes_filled = true;
} else {
$combination->array_always_filled = false;
}
if ($combination->all_arrays_lists !== false) {
$combination->all_arrays_lists = true;
}
$combination->all_arrays_callable = false;
$combination->all_arrays_class_string_maps = false;
return null;
}
if ($type instanceof TClassStringMap) {
foreach ([$type->getStandinKeyParam(), $type->value_param] as $i => $type_param) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->array_type_params[$i] = Type::combineUnionTypes(
$combination->array_type_params[$i] ?? null,
$type_param,
$codebase,
$overwrite_empty_array
);
}
$combination->array_always_filled = false;
if ($combination->all_arrays_class_string_maps !== false) {
$combination->all_arrays_class_string_maps = true;
$combination->class_string_map_names[$type->param_name] = true;
$combination->class_string_map_as_types[(string) $type->as_type] = $type->as_type;
}
return null;
}
if (($type instanceof TGenericObject && ($type->value === 'Traversable' || $type->value === 'Generator'))
|| ($type instanceof TIterable && $type->has_docblock_params)
|| ($type instanceof TArray && $type_key === 'iterable')
) {
foreach ($type->type_params as $i => $type_param) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->builtin_type_params[$type_key][$i] = Type::combineUnionTypes(
$combination->builtin_type_params[$type_key][$i] ?? null,
$type_param,
$codebase,
$overwrite_empty_array
);
}
return null;
}
if ($type instanceof TGenericObject) {
foreach ($type->type_params as $i => $type_param) {
/** @psalm-suppress PropertyTypeCoercion */
$combination->object_type_params[$type_key][$i] = Type::combineUnionTypes(
$combination->object_type_params[$type_key][$i] ?? null,
$type_param,
$codebase,
$overwrite_empty_array
);
}
return null;
}
if ($type instanceof TKeyedArray) {
if ($type instanceof TCallableKeyedArray && isset($combination->value_types['callable'])) {
return null;
}
$existing_objectlike_entries = (bool) $combination->objectlike_entries;
$possibly_undefined_entries = $combination->objectlike_entries;
$combination->objectlike_sealed = $combination->objectlike_sealed && $type->sealed;
if ($type->previous_value_type) {
$combination->objectlike_value_type = Type::combineUnionTypes(
$type->previous_value_type,
$combination->objectlike_value_type,
$codebase,
$overwrite_empty_array
);
}
if ($type->previous_key_type) {
$combination->objectlike_key_type = Type::combineUnionTypes(
$type->previous_key_type,
$combination->objectlike_key_type,
$codebase,
$overwrite_empty_array
);
}
$has_defined_keys = false;
foreach ($type->properties as $candidate_property_name => $candidate_property_type) {
$value_type = $combination->objectlike_entries[$candidate_property_name] ?? null;
if (!$value_type) {
$combination->objectlike_entries[$candidate_property_name] = clone $candidate_property_type;
// it's possibly undefined if there are existing objectlike entries and
$combination->objectlike_entries[$candidate_property_name]->possibly_undefined
= $existing_objectlike_entries || $candidate_property_type->possibly_undefined;
} else {
$combination->objectlike_entries[$candidate_property_name] = Type::combineUnionTypes(
$value_type,
$candidate_property_type,
$codebase,
$overwrite_empty_array
);
}
if (!$type->previous_value_type) {
unset($possibly_undefined_entries[$candidate_property_name]);
}
if (!$candidate_property_type->possibly_undefined) {
$has_defined_keys = true;
}
}
if (!$has_defined_keys) {
$combination->array_always_filled = false;
}
if ($combination->array_counts !== null) {
$combination->array_counts[count($type->properties)] = true;
}
foreach ($possibly_undefined_entries as $possibly_undefined_type) {
$possibly_undefined_type->possibly_undefined = true;
}
if (!$type->is_list) {
$combination->all_arrays_lists = false;
} elseif ($combination->all_arrays_lists !== false) {
$combination->all_arrays_lists = true;
}
if ($type instanceof TCallableKeyedArray) {
if ($combination->all_arrays_callable !== false) {
$combination->all_arrays_callable = true;
}
} else {
$combination->all_arrays_callable = false;
}
$combination->all_arrays_class_string_maps = false;
return null;
}
if ($type instanceof TObject) {
if ($type instanceof TCallableObject && isset($combination->value_types['callable'])) {
return null;
}
$combination->named_object_types = null;
$combination->value_types[$type_key] = $type;
return null;
}
if ($type instanceof TIterable) {
$combination->value_types[$type_key] = $type;
return null;
}
if ($type instanceof TNamedObject) {
if ($combination->named_object_types === null) {
return null;
}
if (isset($combination->named_object_types[$type_key])) {
return null;
}
if (!$codebase) {
$combination->named_object_types[$type_key] = $type;
return null;
}
if (!$codebase->classlikes->classOrInterfaceOrEnumExists($type_key)) {
// write this to the main list
$combination->value_types[$type_key] = $type;
return null;
}
$is_class = $codebase->classExists($type_key);
foreach ($combination->named_object_types as $key => $_) {
if ($codebase->classExists($key)) {
if ($codebase->classExtendsOrImplements($key, $type_key)) {
unset($combination->named_object_types[$key]);
continue;
}
if ($is_class) {
if ($codebase->classExtends($type_key, $key)) {
return null;
}
}
} else {
if ($codebase->interfaceExtends($key, $type_key)) {
unset($combination->named_object_types[$key]);
continue;
}
if ($is_class) {
if ($codebase->classImplements($type_key, $key)) {
return null;
}
} else {
if ($codebase->interfaceExtends($type_key, $key)) {
return null;
}
}
}
}
$combination->named_object_types[$type_key] = $type;
return null;
}
if ($type instanceof TScalar) {
$combination->strings = null;
$combination->ints = null;
$combination->floats = null;
unset(
$combination->value_types['string'],
$combination->value_types['int'],
$combination->value_types['bool'],
$combination->value_types['true'],
$combination->value_types['false'],
$combination->value_types['float']
);
if (!isset($combination->value_types[$type_key])
|| $combination->value_types[$type_key]->getId() === $type->getId()
) {
$combination->value_types[$type_key] = $type;
} else {
$combination->value_types[$type_key] = new TScalar();
}
return null;
}
if ($type instanceof Scalar && isset($combination->value_types['scalar'])) {
return null;
}
if ($type instanceof TArrayKey) {
$combination->strings = null;
$combination->ints = null;
unset(
$combination->value_types['string'],
$combination->value_types['int']
);
$combination->value_types[$type_key] = $type;
return null;
}
if ($type instanceof TString) {
self::scrapeStringProperties(
$type_key,
$type,
$combination,
$codebase,
$literal_limit
);
return null;
}
if ($type instanceof TInt) {
self::scrapeIntProperties(
$type_key,
$type,
$combination,
$literal_limit
);
return null;
}
if ($type instanceof TFloat) {
if ($type instanceof TLiteralFloat) {
if ($combination->floats !== null && count($combination->floats) < $literal_limit) {
$combination->floats[$type_key] = $type;
} else {
$combination->floats = null;
$combination->value_types['float'] = new TFloat();
}
} else {
$combination->floats = null;
$combination->value_types['float'] = $type;
}
return null;
}
if ($type instanceof TCallable && $type_key === 'callable') {
if (($combination->value_types['string'] ?? null) instanceof TCallableString) {
unset($combination->value_types['string']);
} elseif (!empty($combination->array_type_params) && $combination->all_arrays_callable) {
$combination->array_type_params = [];
} elseif (isset($combination->value_types['callable-object'])) {
unset($combination->value_types['callable-object']);
}
}
$combination->value_types[$type_key] = $type;
return null;
}
private static function scrapeStringProperties(
string $type_key,
Atomic $type,
TypeCombination $combination,
?Codebase $codebase,
int $literal_limit
): void {
if ($type instanceof TCallableString && isset($combination->value_types['callable'])) {
return;
}
if (isset($combination->value_types['array-key'])) {
return;
}
if ($type instanceof TTemplateParamClass) {
$combination->value_types[$type_key] = $type;
} elseif ($type instanceof TClassString) {
if (!$type->as_type) {
$combination->class_string_types['object'] = new TObject();
} else {
$combination->class_string_types[$type->as] = $type->as_type;
}
} elseif ($type instanceof TLiteralString) {
if ($combination->strings !== null && count($combination->strings) < $literal_limit) {
$combination->strings[$type_key] = $type;
} else {
$shared_classlikes = $codebase ? self::getSharedTypes($combination, $codebase) : [];
$combination->strings = null;
if (isset($combination->value_types['string'])
&& $combination->value_types['string'] instanceof TNumericString
&& is_numeric($type->value)
) {
// do nothing
} elseif (isset($combination->value_types['class-string'])
&& $type instanceof TLiteralClassString
) {
// do nothing
} elseif ($type instanceof TLiteralClassString) {
$type_classlikes = $codebase
? self::getClassLikes($codebase, $type->value)
: [];
$mutual = array_intersect_key($type_classlikes, $shared_classlikes);
if ($mutual) {
$first_class = array_keys($mutual)[0];
$combination->class_string_types[$first_class] = new TNamedObject($first_class);
} else {
$combination->class_string_types['object'] = new TObject();
}
} elseif (isset($combination->value_types['string'])
&& $combination->value_types['string'] instanceof TNonspecificLiteralString
) {
// do nothing
} elseif (isset($combination->value_types['string'])
&& $combination->value_types['string'] instanceof TLowercaseString
&& strtolower($type->value) === $type->value
) {
// do nothing
} elseif (isset($combination->value_types['string'])
&& $combination->value_types['string'] instanceof TNonFalsyString
&& $type->value
) {
// do nothing
} elseif (isset($combination->value_types['string'])
&& $combination->value_types['string'] instanceof TNonEmptyString
&& $type->value !== ''
) {
// do nothing
} else {
$combination->value_types['string'] = new TString();
}
}
} else {
$type_key = 'string';
if (!isset($combination->value_types['string'])) {
if ($combination->strings) {
if ($type instanceof TNumericString) {
$has_non_numeric_string = false;
foreach ($combination->strings as $string_type) {
if (!is_numeric($string_type->value)) {
$has_non_numeric_string = true;