Add PHP types to private methods and functions

Author: wouterj

Parser/Reader.php

@@ -53,7 +53,10 @@ public function getSubstring(int $length, int $offset = 0): string
         return substr($this->source, $this->position + $offset, $length);
     }
 
-    public function getOffset(string $string)
+    /**
+     * @return int|false
+     */
+    public function getOffset(string $string): int|bool
     {
         $position = strpos($this->source, $string, $this->position);
 
@@ -71,12 +74,12 @@ public function findPattern(string $pattern): array|false
         return false;
     }
 
-    public function moveForward(int $length)
+    public function moveForward(int $length): void
     {
         $this->position += $length;
     }
 
-    public function moveToEnd()
+    public function moveToEnd(): void
     {
         $this->position = $this->length;
     }