<?php declare(strict_types=1);
namespace Invoker\ParameterResolver\Container;
use Invoker\ParameterResolver\ParameterResolver;
use Psr\Container\ContainerInterface;
use ReflectionFunctionAbstract;
use ReflectionNamedType;
/**
* Inject entries from a DI container using the type-hints.
*/
class TypeHintContainerResolver implements ParameterResolver
{
/** @var ContainerInterface */
private $container;
/**
* @param ContainerInterface $container The container to get entries from.
*/
public function __construct(ContainerInterface $container)
{
$this->container = $container;
}
public function getParameters(
ReflectionFunctionAbstract $reflection,
array $providedParameters,
array $resolvedParameters
): array {
$parameters = $reflection->getParameters();
// Skip parameters already resolved
if (! empty($resolvedParameters)) {
$parameters = array_diff_key($parameters, $resolvedParameters);
}
foreach ($parameters as $index => $parameter) {
$parameterType = $parameter->getType();
if (! $parameterType) {
// No type
continue;
}
if ($parameterType->isBuiltin()) {
// Primitive types are not supported
continue;
}
if (! $parameterType instanceof ReflectionNamedType) {
// Union types are not supported
continue;
}
$parameterClass = $parameterType->getName();
if ($parameterClass === 'self') {
$parameterClass = $parameter->getDeclaringClass()->getName();
}
if ($this->container->has($parameterClass)) {
$resolvedParameters[$index] = $this->container->get($parameterClass);
}
}
return $resolvedParameters;
}
}