sourece phpopyion

2026-05-18 19:04:57 +03:00
parent f1a0d6a2b1
commit 507d643aee
17 changed files with 1007 additions and 61 deletions
@@ -0,0 +1,147 @@
+<?php
+
+namespace Lucent\Option;
+
+use ArrayIterator;
+
+/**
+ * @template T
+ *
+ * @extends Option<T>
+ */
+final class Some extends Option
+{
+    /** @var T */
+    private $value;
+
+    /** @param T $value */
+    public function __construct($value)
+    {
+        $this->value = $value;
+    }
+
+    /**
+     * @template U
+     * @param U $value
+     * @return Some<U>
+     */
+    public static function create($value): self
+    {
+        return new self($value);
+    }
+
+    public function isDefined(): bool
+    {
+        return true;
+    }
+
+    public function isEmpty(): bool
+    {
+        return false;
+    }
+
+    public function get()
+    {
+        return $this->value;
+    }
+
+    public function getOrElse($default)
+    {
+        return $this->value;
+    }
+
+    public function getOrCall($callable)
+    {
+        return $this->value;
+    }
+
+    public function getOrThrow(\Exception $ex)
+    {
+        return $this->value;
+    }
+
+    public function orElse(Option $else)
+    {
+        return $this;
+    }
+
+    public function ifDefined($callable)
+    {
+        $this->forAll($callable);
+    }
+
+    public function forAll($callable)
+    {
+        $callable($this->value);
+
+        return $this;
+    }
+
+    public function map($callable)
+    {
+        return new self($callable($this->value));
+    }
+
+    public function flatMap($callable)
+    {
+        /** @var mixed */
+        $rs = $callable($this->value);
+        if (!$rs instanceof Option) {
+            throw new \RuntimeException('Callables passed to flatMap() must return an Option. Maybe you should use map() instead?');
+        }
+
+        return $rs;
+    }
+
+    public function filter($callable)
+    {
+        if (true === $callable($this->value)) {
+            return $this;
+        }
+
+        return None::create();
+    }
+
+    public function filterNot($callable)
+    {
+        if (false === $callable($this->value)) {
+            return $this;
+        }
+
+        return None::create();
+    }
+
+    public function select($value)
+    {
+        if ($this->value === $value) {
+            return $this;
+        }
+
+        return None::create();
+    }
+
+    public function reject($value)
+    {
+        if ($this->value === $value) {
+            return None::create();
+        }
+
+        return $this;
+    }
+
+    /** @return ArrayIterator<int, T> */
+    public function getIterator(): ArrayIterator
+    {
+        return new ArrayIterator([$this->value]);
+    }
+
+    public function foldLeft($initialValue, $callable)
+    {
+        return $callable($initialValue, $this->value);
+    }
+
+    public function foldRight($initialValue, $callable)
+    {
+        return $callable($this->value, $initialValue);
+    }
+}