wip example code

Author: AydinHassan

solution-attributes.php

@@ -0,0 +1,80 @@
+<?php
+
+#[Attribute(Attribute::TARGET_CLASS)]
+class Deserialize {}
+
+#[Attribute(Attribute::TARGET_PROPERTY)]
+class Map {
+    public function __construct(public string $mapFrom)
+    {
+    }
+}
+
+#[Attribute(Attribute::TARGET_PROPERTY)]
+class Skip {
+
+}
+
+#[Deserialize]
+class CityBreak {
+    public string $country;
+
+    #[Map('town')]
+    public string $city;
+
+    public string $avgTemperature;
+
+    #[Skip()]
+    public ?string $bestNeighbourhood = null;
+}
+
+function camelCaseToSnakeCase(string $string): string
+{
+    return strtolower(preg_replace(['/([a-z\d])([A-Z])/', '/([^_])([A-Z][a-z])/'], '$1_$2', $string));
+}
+
+function deserialize(string $data, string $className): object
+{
+    $reflectionClass = new \ReflectionClass($className);
+    $attrs = $reflectionClass->getAttributes(Deserialize::class);
+
+    if (empty($attrs)) {
+        throw new \RuntimeException('Class cannot be deserialized');
+    }
+
+    $attrs[0]->newInstance();
+
+    $object = new $className;
+
+    $data = json_decode($data, true);
+
+    foreach ($reflectionClass->getProperties() as $property) {
+        if ($map = $property->getAttributes(Map::class)) {
+            $key = $map[0]->newInstance()->mapFrom;
+
+            if (isset($data[$key])) {
+                $object->{$property->getName()} = $data[$key];
+            }
+
+        } elseif ($skip = $property->getAttributes(Skip::class)) {
+            continue;
+        } elseif (isset($data[camelCaseToSnakeCase($property->getName())])) {
+            $object->{$property->getName()} = $data[camelCaseToSnakeCase($property->getName())];
+        }
+    }
+
+    return $object;
+}
+
+$object = deserialize(
+    json_encode([
+        'country' => 'Austria',
+        'town' => 'Vienna',
+        'avg_temperature' => '13',
+        'best_neighbourhood' => 'Penha de França'
+    ]),
+    CityBreak::class
+);
+
+var_dump($object);
+