From 8e75a9eea31646ebf024039d109f31d7f996ff87 Mon Sep 17 00:00:00 2001
From: roxblnfk <roxblnfk@ya.ru>
Date: Tue, 20 Feb 2024 14:29:45 +0400
Subject: [PATCH] Init Core Introspector

---
 src/Core/src/Internal/Introspector.php        | 56 +++++++++++++++++++
 .../src/Internal/Introspector/Accessor.php    | 41 ++++++++++++++
 .../Internal/Introspector/CommonTest.php      | 42 ++++++++++++++
 3 files changed, 139 insertions(+)
 create mode 100644 src/Core/src/Internal/Introspector.php
 create mode 100644 src/Core/src/Internal/Introspector/Accessor.php
 create mode 100644 src/Core/tests/Internal/Introspector/CommonTest.php

diff --git a/src/Core/src/Internal/Introspector.php b/src/Core/src/Internal/Introspector.php
new file mode 100644
index 000000000..595beb96b
--- /dev/null
+++ b/src/Core/src/Internal/Introspector.php
@@ -0,0 +1,56 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\Core\Internal;
+
+use Psr\Container\ContainerInterface;
+use Spiral\Core\Container;
+use Spiral\Core\ContainerScope;
+use Spiral\Core\Internal\Introspector\Accessor;
+
+/**
+ * @internal
+ */
+final class Introspector
+{
+    public static function scopeName(?ContainerInterface $container = null): ?string
+    {
+        return self::getAccessor($container)->scope->getScopeName();
+    }
+
+    /**
+     * Returns list of scope names starting from the current scope to the root scope.
+     *
+     * @return list<string|null>
+     */
+    public static function scopeNames(?ContainerInterface $container = null): array
+    {
+        $scope = self::getAccessor($container)->scope;
+        $result = [];
+        do {
+            $result[] = $scope->getScopeName();
+            $scope = $scope->getParentScope();
+        } while ($scope !== null);
+
+        return $result;
+    }
+
+    /**
+     * @psalm-assert Container|null $container
+     */
+    public static function getAccessor(?ContainerInterface $container = null): Accessor
+    {
+        if ($container !== null && !$container instanceof Container) {
+            throw new \InvalidArgumentException('Container must be an instance of ' . Container::class);
+        }
+
+        $container ??= ContainerScope::getContainer();
+
+        if (!$container instanceof Container) {
+            throw new \RuntimeException('Container is not available.');
+        }
+
+        return new Accessor($container);
+    }
+}
diff --git a/src/Core/src/Internal/Introspector/Accessor.php b/src/Core/src/Internal/Introspector/Accessor.php
new file mode 100644
index 000000000..4d3931370
--- /dev/null
+++ b/src/Core/src/Internal/Introspector/Accessor.php
@@ -0,0 +1,41 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\Core\Internal\Introspector;
+
+use Psr\Container\ContainerInterface;
+use Spiral\Core\BinderInterface;
+use Spiral\Core\Config;
+use Spiral\Core\Container as PublicContainer;
+use Spiral\Core\FactoryInterface;
+use Spiral\Core\Internal;
+use Spiral\Core\InvokerInterface;
+use Spiral\Core\Options;
+use Spiral\Core\ResolverInterface;
+
+/**
+ * @internal
+ *
+ * @property-read Internal\State $state
+ * @property-read ResolverInterface|Internal\Resolver $resolver
+ * @property-read FactoryInterface|Internal\Factory $factory
+ * @property-read ContainerInterface|Internal\Container $container
+ * @property-read BinderInterface|Internal\Binder $binder
+ * @property-read InvokerInterface|Internal\Invoker $invoker
+ * @property-read Internal\Scope $scope
+ * @property-read Config $config
+ * @property-read Options $options
+ */
+final class Accessor
+{
+    public function __construct(
+        public PublicContainer $publicContainer,
+    ) {
+    }
+
+    public function __get(string $name): object
+    {
+        return (fn (PublicContainer $c): object => $c->$name)->call($this->publicContainer, $this->publicContainer);
+    }
+}
diff --git a/src/Core/tests/Internal/Introspector/CommonTest.php b/src/Core/tests/Internal/Introspector/CommonTest.php
new file mode 100644
index 000000000..efd78a99b
--- /dev/null
+++ b/src/Core/tests/Internal/Introspector/CommonTest.php
@@ -0,0 +1,42 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Spiral\Tests\Core\Internal\Introspector;
+
+use PHPUnit\Framework\TestCase;
+use Psr\Container\ContainerInterface;
+use Spiral\Core\Container;
+use Spiral\Core\Internal\Introspector;
+use Spiral\Core\Scope;
+
+final class CommonTest extends TestCase
+{
+    public function testScopeName(): void
+    {
+        $container = new Container();
+
+        self::assertSame('root', Introspector::scopeName($container));
+
+        $container->invoke(static fn() => self::assertSame('root', Introspector::scopeName()));
+
+        $container->runScope(new Scope('test'), function (ContainerInterface $container): void {
+            self::assertSame('test', Introspector::scopeName($container));
+            self::assertSame('test', Introspector::scopeName());
+        });
+    }
+
+    public function testScopeNames(): void
+    {
+        $container = new Container();
+
+        $container->runScope(new Scope('test'), function (Container $c): void {
+            $c->runScope(new Scope(), function (Container $c): void {
+                $c->runScope(new Scope('bar'), function (Container $c): void {
+                    self::assertSame(['bar', null, 'test', 'root'], Introspector::scopeNames($c));
+                    self::assertSame(['bar', null, 'test', 'root'], Introspector::scopeNames());
+                });
+            });
+        });
+    }
+}