Always use object in resolve relative

src/AbstractPath.php

@@ -22,27 +22,9 @@ abstract class AbstractPath implements PathInterface
     }
 
     /**
-     * @param RelativePathInterface|string $path
      * @return static
      */
-    public function resolveRelative($path, bool $strict = false): self
-    {
-        if (\is_string($path)) {
-            $path = $this->buildRelative($path);
-        }
-
-        return $this->doResolveRelative($path, $strict);
-    }
-
-    protected function buildRelative(string $path): RelativePath
-    {
-        return new RelativePath($path);
-    }
-
-    /**
-     * @return static
-     */
-    protected function doResolveRelative(RelativePathInterface $path, bool $strict): self
+    public function resolveRelative(RelativePathInterface $path, bool $strict = false): self
     {
         if ($path instanceof RelativePath) {
             // optimize

src/PathInterface.php

@@ -11,8 +11,7 @@ interface PathInterface extends \Stringable
     public function toString(): string;
 
     /**
-     * @param RelativePathInterface|string $path
      * @return static
      */
-    public function resolveRelative($path, bool $strict = false): self;
+    public function resolveRelative(RelativePathInterface $path, bool $strict = false): self;
 }

src/RelativePath.php

@@ -25,6 +25,11 @@ final class RelativePath extends AbstractPath implements RelativePathInterface
         return new self($path, true);
     }
 
+    public static function currentOS(string $path): self
+    {
+        return new self($path, DIRECTORY_SEPARATOR === '\\');
+    }
+
     protected function parsePath(string $path, bool $strict): void
     {
         $components = explode('/', $path);
@@ -49,11 +54,6 @@ final class RelativePath extends AbstractPath implements RelativePathInterface
         $this->components = $parsedComponents;
     }
 
-    protected function buildRelative(string $path): RelativePath
-    {
-        return new RelativePath($path, $this->windows);
-    }
-
     public function isRoot(): bool
     {
         return $this->components[0] !== '.' && $this->components[0] !== '..';