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<?php
namespace Prophecy\Doubler\Generator\Node;
use Prophecy\Exception\Doubler\DoubleException;
abstract class TypeNodeAbstract
{
/** @var string[] */
protected $types = [];
public function __construct(string ...$types)
{
foreach ($types as $type) {
$type = $this->getRealType($type);
$this->types[$type] = $type;
}
$this->guardIsValidType();
}
public function canUseNullShorthand(): bool
{
return isset($this->types['null']) && count($this->types) <= 2;
}
public function getTypes(): array
{
return array_values($this->types);
}
public function getNonNullTypes(): array
{
$nonNullTypes = $this->types;
unset($nonNullTypes['null']);
return array_values($nonNullTypes);
}
protected function prefixWithNsSeparator(string $type): string
{
return '\\' . ltrim($type, '\\');
}
protected function getRealType(string $type): string
{
switch ($type) {
// type aliases
case 'double':
case 'real':
return 'float';
case 'boolean':
return 'bool';
case 'integer':
return 'int';
// built in types
case 'self':
case 'array':
case 'callable':
case 'bool':
case 'false':
case 'float':
case 'int':
case 'string':
case 'iterable':
case 'object':
case 'null':
return $type;
case 'mixed':
return \PHP_VERSION_ID < 80000 ? $this->prefixWithNsSeparator($type) : $type;
default:
return $this->prefixWithNsSeparator($type);
}
}
protected function guardIsValidType()
{
if ($this->types == ['null' => 'null']) {
throw new DoubleException('Type cannot be standalone null');
}
if ($this->types == ['false' => 'false']) {
throw new DoubleException('Type cannot be standalone false');
}
if ($this->types == ['false' => 'false', 'null' => 'null']) {
throw new DoubleException('Type cannot be nullable false');
}
if (\PHP_VERSION_ID >= 80000 && isset($this->types['mixed']) && count($this->types) !== 1) {
throw new DoubleException('mixed cannot be part of a union');
}
}
}