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| 1 | <?php |
| 2 | |
| 3 | declare(strict_types=1); |
| 4 | |
| 5 | /** |
| 6 | * Fast Forward Development Tools for PHP projects. |
| 7 | * |
| 8 | * This file is part of fast-forward/dev-tools project. |
| 9 | * |
| 10 | * @author Felipe Sayão Lobato Abreu <github@mentordosnerds.com> |
| 11 | * @license https://opensource.org/licenses/MIT MIT License |
| 12 | * |
| 13 | * @see https://github.com/php-fast-forward/ |
| 14 | * @see https://github.com/php-fast-forward/dev-tools |
| 15 | * @see https://github.com/php-fast-forward/dev-tools/issues |
| 16 | * @see https://php-fast-forward.github.io/dev-tools/ |
| 17 | * @see https://datatracker.ietf.org/doc/html/rfc2119 |
| 18 | */ |
| 19 | |
| 20 | namespace FastForward\DevTools\Reflection; |
| 21 | |
| 22 | use ReflectionClass; |
| 23 | use ReflectionMethod; |
| 24 | |
| 25 | /** |
| 26 | * Centralizes small reflection lookups used by DevTools runtime metadata. |
| 27 | * |
| 28 | * This helper keeps command discovery code focused on command behavior instead of |
| 29 | * raw reflection boilerplate. |
| 30 | */ |
| 31 | class ClassReflection |
| 32 | { |
| 33 | /** |
| 34 | * Detects whether a class can be instantiated as a subclass of another class. |
| 35 | * |
| 36 | * @param class-string $className the class being inspected |
| 37 | * @param class-string $parentClass the required parent class or interface |
| 38 | * |
| 39 | * @return bool true when the class is instantiable and extends or implements the expected parent |
| 40 | */ |
| 41 | public static function isInstantiableSubclassOf(string $className, string $parentClass): bool |
| 42 | { |
| 43 | $reflection = new ReflectionClass($className); |
| 44 | |
| 45 | return $reflection->isInstantiable() && $reflection->isSubclassOf($parentClass); |
| 46 | } |
| 47 | |
| 48 | /** |
| 49 | * Returns the first matching attribute arguments normalized by constructor parameter name. |
| 50 | * |
| 51 | * Positional arguments are mapped to their constructor parameter names so callers do not |
| 52 | * need to understand how the attribute was declared at the call site. |
| 53 | * |
| 54 | * @param class-string $className the class being inspected |
| 55 | * @param class-string $attributeClass the attribute class being read |
| 56 | * |
| 57 | * @return array<string, mixed>|null the normalized argument map, or null when the attribute is absent |
| 58 | */ |
| 59 | public static function getAttributeArguments(string $className, string $attributeClass): ?array |
| 60 | { |
| 61 | $reflection = new ReflectionClass($className); |
| 62 | $attribute = $reflection->getAttributes($attributeClass)[0] ?? null; |
| 63 | |
| 64 | if (null === $attribute) { |
| 65 | return null; |
| 66 | } |
| 67 | |
| 68 | $arguments = $attribute->getArguments(); |
| 69 | $constructor = new ReflectionMethod($attributeClass, '__construct'); |
| 70 | $normalizedArguments = []; |
| 71 | |
| 72 | foreach ($constructor->getParameters() as $parameter) { |
| 73 | $normalizedArguments[$parameter->getName()] = $arguments[$parameter->getName()] |
| 74 | ?? $arguments[$parameter->getPosition()] |
| 75 | ?? ($parameter->isDefaultValueAvailable() ? $parameter->getDefaultValue() : null); |
| 76 | } |
| 77 | |
| 78 | return $normalizedArguments; |
| 79 | } |
| 80 | } |