103 lines
2.6 KiB
PHP
103 lines
2.6 KiB
PHP
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<?php
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namespace Illuminate\Support;
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use ReflectionClass;
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use ReflectionMethod;
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use ReflectionNamedType;
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class Reflector
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{
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/**
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* This is a PHP 7.4 compatible implementation of is_callable.
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*
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* @param mixed $var
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* @param bool $syntaxOnly
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* @return bool
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*/
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public static function isCallable($var, $syntaxOnly = false)
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{
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if (! is_array($var)) {
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return is_callable($var, $syntaxOnly);
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}
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if ((! isset($var[0]) || ! isset($var[1])) ||
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! is_string($var[1] ?? null)) {
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return false;
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}
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if ($syntaxOnly &&
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(is_string($var[0]) || is_object($var[0])) &&
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is_string($var[1])) {
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return true;
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}
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$class = is_object($var[0]) ? get_class($var[0]) : $var[0];
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$method = $var[1];
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if (! class_exists($class)) {
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return false;
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}
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if (method_exists($class, $method)) {
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return (new ReflectionMethod($class, $method))->isPublic();
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}
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if (is_object($var[0]) && method_exists($class, '__call')) {
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return (new ReflectionMethod($class, '__call'))->isPublic();
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}
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if (! is_object($var[0]) && method_exists($class, '__callStatic')) {
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return (new ReflectionMethod($class, '__callStatic'))->isPublic();
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}
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return false;
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}
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/**
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* Get the class name of the given parameter's type, if possible.
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*
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* @param \ReflectionParameter $parameter
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* @return string|null
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*/
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public static function getParameterClassName($parameter)
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{
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$type = $parameter->getType();
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if (! $type instanceof ReflectionNamedType || $type->isBuiltin()) {
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return;
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}
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$name = $type->getName();
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if (! is_null($class = $parameter->getDeclaringClass())) {
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if ($name === 'self') {
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return $class->getName();
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}
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if ($name === 'parent' && $parent = $class->getParentClass()) {
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return $parent->getName();
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}
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}
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return $name;
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}
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/**
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* Determine if the parameter's type is a subclass of the given type.
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*
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* @param \ReflectionParameter $parameter
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* @param string $className
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* @return bool
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*/
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public static function isParameterSubclassOf($parameter, $className)
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{
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$paramClassName = static::getParameterClassName($parameter);
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return ($paramClassName && class_exists($paramClassName))
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? (new ReflectionClass($paramClassName))->isSubclassOf($className)
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: false;
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}
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}
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