v.0.1

vendor/illuminate/support/Optional.php

@@ -0,0 +1,130 @@
+<?php
+
+namespace Illuminate\Support;
+
+use ArrayAccess;
+use ArrayObject;
+
+class Optional implements ArrayAccess
+{
+    use Traits\Macroable {
+        __call as macroCall;
+    }
+
+    /**
+     * The underlying object.
+     *
+     * @var mixed
+     */
+    protected $value;
+
+    /**
+     * Create a new optional instance.
+     *
+     * @param  mixed  $value
+     * @return void
+     */
+    public function __construct($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Dynamically access a property on the underlying object.
+     *
+     * @param  string  $key
+     * @return mixed
+     */
+    public function __get($key)
+    {
+        if (is_object($this->value)) {
+            return $this->value->{$key} ?? null;
+        }
+    }
+
+    /**
+     * Dynamically check a property exists on the underlying object.
+     *
+     * @param  mixed  $name
+     * @return bool
+     */
+    public function __isset($name)
+    {
+        if (is_object($this->value)) {
+            return isset($this->value->{$name});
+        }
+
+        if (is_array($this->value) || $this->value instanceof ArrayObject) {
+            return isset($this->value[$name]);
+        }
+
+        return false;
+    }
+
+    /**
+     * Determine if an item exists at an offset.
+     *
+     * @param  mixed  $key
+     * @return bool
+     */
+    public function offsetExists($key)
+    {
+        return Arr::accessible($this->value) && Arr::exists($this->value, $key);
+    }
+
+    /**
+     * Get an item at a given offset.
+     *
+     * @param  mixed  $key
+     * @return mixed
+     */
+    public function offsetGet($key)
+    {
+        return Arr::get($this->value, $key);
+    }
+
+    /**
+     * Set the item at a given offset.
+     *
+     * @param  mixed  $key
+     * @param  mixed  $value
+     * @return void
+     */
+    public function offsetSet($key, $value)
+    {
+        if (Arr::accessible($this->value)) {
+            $this->value[$key] = $value;
+        }
+    }
+
+    /**
+     * Unset the item at a given offset.
+     *
+     * @param  string  $key
+     * @return void
+     */
+    public function offsetUnset($key)
+    {
+        if (Arr::accessible($this->value)) {
+            unset($this->value[$key]);
+        }
+    }
+
+    /**
+     * Dynamically pass a method to the underlying object.
+     *
+     * @param  string  $method
+     * @param  array  $parameters
+     * @return mixed
+     */
+    public function __call($method, $parameters)
+    {
+        if (static::hasMacro($method)) {
+            return $this->macroCall($method, $parameters);
+        }
+
+        if (is_object($this->value)) {
+            return $this->value->{$method}(...$parameters);
+        }
+    }
+}