Refactor rounding methods and type hints in unit models

Author: chapterjason

src/Model/AbstractUnit.php

@@ -174,7 +174,7 @@ abstract public static function getMapping(): array;
     /**
      * @param class-string<UnitInterface>|string $targetUnitClassOrType
      */
-    public function convert(string $targetUnitClassOrType): UnitInterface
+    public function convert(string $targetUnitClassOrType): self
     {
         $mapping = static::getMapping();
 
@@ -206,7 +206,7 @@ public function convert(string $targetUnitClassOrType): UnitInterface
         return new $targetUnitClassOrType($convertedValue);
     }
 
-    public function normalize(): UnitInterface
+    public function normalize(): self
     {
         $mapping = static::getMapping();
 

src/Model/Distance.php

@@ -75,7 +75,7 @@ public function floor(string $unitClass = Kilometer::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0, \RoundingMode::TowardsZero)
+                ->floor()
                 ->convert(Meter::class)
         );
     }
@@ -84,7 +84,7 @@ public function ceil(string $unitClass = Kilometer::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0, \RoundingMode::AwayFromZero)
+                ->ceil()
                 ->convert(Meter::class)
         );
     }
@@ -93,7 +93,7 @@ public function round(string $unitClass = Kilometer::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0)
+                ->round()
                 ->convert(Meter::class)
         );
     }

src/Model/Duration.php

@@ -276,7 +276,7 @@ public function floor(string $unitClass = Minute::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0, \RoundingMode::TowardsZero)
+                ->floor()
                 ->convert(Second::class)
         );
     }
@@ -285,7 +285,7 @@ public function ceil(string $unitClass = Minute::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0, \RoundingMode::AwayFromZero)
+                ->ceil()
                 ->convert(Second::class)
         );
     }
@@ -294,7 +294,7 @@ public function round(string $unitClass = Minute::class): self
     {
         return new self(
             $this->value->convert($unitClass)
-                ->round(0)
+                ->round()
                 ->convert(Second::class)
         );
     }