Remove unnecessary empty usages

Author: ostrolucky

Dumper.php

@@ -51,10 +51,10 @@ public function dump(mixed $input, int $inline = 0, int $indent = 0, int $flags
         $dumpObjectAsInlineMap = true;
 
         if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($input instanceof \ArrayObject || $input instanceof \stdClass)) {
-            $dumpObjectAsInlineMap = empty((array) $input);
+            $dumpObjectAsInlineMap = !(array) $input;
         }
 
-        if ($inline <= 0 || (!\is_array($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || empty($input)) {
+        if ($inline <= 0 || (!\is_array($input) && !$input instanceof TaggedValue && $dumpObjectAsInlineMap) || !$input) {
             $output .= $prefix.Inline::dump($input, $flags);
         } elseif ($input instanceof TaggedValue) {
             $output .= $this->dumpTaggedValue($input, $inline, $indent, $flags, $prefix);
@@ -121,10 +121,10 @@ public function dump(mixed $input, int $inline = 0, int $indent = 0, int $flags
                 $dumpObjectAsInlineMap = true;
 
                 if (Yaml::DUMP_OBJECT_AS_MAP & $flags && ($value instanceof \ArrayObject || $value instanceof \stdClass)) {
-                    $dumpObjectAsInlineMap = empty((array) $value);
+                    $dumpObjectAsInlineMap = !(array) $value;
                 }
 
-                $willBeInlined = $inline - 1 <= 0 || !\is_array($value) && $dumpObjectAsInlineMap || empty($value);
+                $willBeInlined = $inline - 1 <= 0 || !\is_array($value) && $dumpObjectAsInlineMap || !$value;
 
                 $output .= sprintf('%s%s%s%s',
                     $prefix,

Parser.php

@@ -494,7 +494,7 @@ private function doParse(string $value, int $flags): mixed
             $data = $object;
         }
 
-        return empty($data) ? null : $data;
+        return $data ?: null;
     }
 
     private function parseBlock(int $offset, string $yaml, int $flags): mixed