- Added while/endwhile and do/while syntaxes

- Fix the abstractclass requirement of parse() function

src/Extension/JsonExtension.php

@@ -10,7 +10,7 @@ class JsonExtension implements Extension, FunctionExtension {
     
     public int $flags =  JSON_HEX_TAG | \JSON_HEX_QUOT | \JSON_THROW_ON_ERROR | \JSON_UNESCAPED_UNICODE;
    
-    public function parse(/*\Picae\Compiler\Context*/ &$context, ?string $arguments, string $token)
+    public function parse(\Picea\Compiler\Context &$context, ?string $arguments, string $token)
     {
         $flag = $this->flags;