Add clone and compare methods to unit models

Author: chapterjason

src/Model/AbstractUnit.php

@@ -265,4 +265,14 @@ public static function create(Number|string|int|float $value, string $unitType):
 
         return new $className($value);
     }
+
+    public function clone(): static
+    {
+        return clone $this;
+    }
+
+    public function compare(UnitInterface $unit): int
+    {
+        return $this->getValue()->compare($unit->getValue());
+    }
 }

src/Model/Distance.php

@@ -98,9 +98,14 @@ public function round(string $unitClass = Kilometer::class): self
         );
     }
 
+    public function compare(self $distance): int
+    {
+        return $this->value->compare($distance->getValue());
+    }
+
     public function getValue(): LengthUnitInterface
     {
-        return $this->value;
+        return $this->value->clone();
     }
 
     public function __toString()

src/Model/Duration.php

@@ -266,9 +266,14 @@ public function round(string $unitClass = Minute::class): self
         );
     }
 
+    public function compare(Distance $distance): int
+    {
+        return $this->value->compare($distance->getValue());
+    }
+
     public function getValue(): TimeUnitInterface
     {
-        return $this->value;
+        return $this->value->clone();
     }
 
     public function __toString()

src/Model/UnitInterface.php

@@ -30,6 +30,10 @@ public function floor(): static;
 
     public function abs(): static;
 
+    public function clone(): static;
+
+    public function compare(self $unit): int;
+
     public function convert(string $targetUnitClassOrType): self;
 
     public function normalize(): self;