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<?php |
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namespace Zenstruck\Callback; |
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use Zenstruck\Callback\Exception\UnresolveableArgument; |
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use Zenstruck\Callback\Parameter\TypedParameter; |
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use Zenstruck\Callback\Parameter\UnionParameter; |
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use Zenstruck\Callback\Parameter\UntypedParameter; |
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/** |
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* @author Kevin Bond <[email protected]> |
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*/ |
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abstract class Parameter |
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{ |
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/** @var bool */ |
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private $optional = false; |
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final public static function union(self ...$parameters): self |
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{ |
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return new UnionParameter(...$parameters); |
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} |
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final public static function typed(string $type, $value): self |
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{ |
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return new TypedParameter($type, $value); |
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} |
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final public static function untyped($value): self |
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{ |
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return new UntypedParameter($value); |
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} |
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final public static function factory(callable $factory): ValueFactory |
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{ |
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return new ValueFactory($factory); |
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} |
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final public function optional(): self |
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{ |
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$this->optional = true; |
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return $this; |
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} |
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/** |
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* @internal |
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* |
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* @return mixed |
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* |
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* @throws UnresolveableArgument |
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*/ |
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final public function resolve(\ReflectionParameter $parameter) |
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{ |
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$value = $this->valueFor($parameter); |
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if (!$value instanceof ValueFactory) { |
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return $value; |
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} |
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$type = $parameter->getType(); |
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if (!$type instanceof \ReflectionNamedType) { |
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return $value(null); |
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} |
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return $value($type->getName()); |
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} |
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/** |
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* @internal |
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*/ |
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final public function isOptional(): bool |
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{ |
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return $this->optional; |
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} |
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abstract public function type(): string; |
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abstract protected function valueFor(\ReflectionParameter $refParameter); |
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} |
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zenstruck /
callback
