sourece phpopyion

src/ResultType/Success.php

@@ -0,0 +1,111 @@
+<?php
+
+declare(strict_types=1);
+
+namespace Lucent\ResultType;
+
+use Lucent\Option\None;
+use Lucent\Option\Some;
+
+/**
+ * @template T
+ * @template E
+ *
+ * @extends \Lucent\ResultType\Result<T,E>
+ */
+final class Success extends Result
+{
+    /**
+     * @var T
+     */
+    private $value;
+
+    /**
+     * Internal constructor for a success value.
+     *
+     * @param T $value
+     *
+     * @return void
+     */
+    private function __construct($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * Create a new error value.
+     *
+     * @template S
+     *
+     * @param S $value
+     *
+     * @return \Lucent\ResultType\Result<S,E>
+     */
+    public static function create($value): Success
+    {
+        return new self($value);
+    }
+
+    /**
+     * Get the success option value.
+     *
+     * @return \Lucent\Option\Option<T>
+     */
+    public function success(): Some
+    {
+        return Some::create($this->value);
+    }
+
+    /**
+     * Map over the success value.
+     *
+     * @template S
+     *
+     * @param callable(T):S $f
+     *
+     * @return \Lucent\ResultType\Result<S,E>
+     */
+    public function map(callable $f): Result
+    {
+        return self::create($f($this->value));
+    }
+
+    /**
+     * Flat map over the success value.
+     *
+     * @template S
+     * @template F
+     *
+     * @param callable(T):\Lucent\ResultType\Result<S,F> $f
+     *
+     * @return \Lucent\ResultType\Result<S,F>
+     */
+    public function flatMap(callable $f)
+    {
+        return $f($this->value);
+    }
+
+    /**
+     * Get the error option value.
+     *
+     * @return \Lucent\Option\Option<E>
+     */
+    public function error()
+    {
+        return None::create();
+    }
+
+    /**
+     * Map over the error value.
+     *
+     * @template F
+     *
+     * @param callable(E):F $f
+     *
+     * @return \Lucent\ResultType\Result<T,F>
+     */
+    public function mapError(callable $f): Result
+    {
+        return self::create($this->value);
+    }
+}