Leave more complex cases for the end

Author: Bellangelo

src/RequireFileExistsRule.php

@@ -57,14 +57,6 @@ private function resolveFilePath(Node $node, Scope $scope): ?string
             return $node->value;
         }
 
-        if ($node instanceof Concat) {
-            $left = $this->resolveFilePath($node->left, $scope);
-            $right = $this->resolveFilePath($node->right, $scope);
-            if ($left !== null && $right !== null) {
-                return $left . $right;
-            }
-        }
-
         if ($node instanceof Dir) {
             return dirname($scope->getFile());
         }
@@ -73,6 +65,14 @@ private function resolveFilePath(Node $node, Scope $scope): ?string
             return $this->resolveClassConstant($node);
         }
 
+        if ($node instanceof Concat) {
+            $left = $this->resolveFilePath($node->left, $scope);
+            $right = $this->resolveFilePath($node->right, $scope);
+            if ($left !== null && $right !== null) {
+                return $left . $right;
+            }
+        }
+
         return null;
     }