- Added while/endwhile and do/while syntaxes

- Fix the abstractclass requirement of parse() function

src/Syntax/EchoRawToken.php

@@ -8,7 +8,7 @@ class EchoRawToken implements Syntax {
 
     public string $tokenClose = "\}\}";
 
-    public function parse(/*\Picae\Compiler\Context*/ &$content, string &$sourceCode)
+    public function parse(\Picea\Compiler\Context &$content, string &$sourceCode)
     {
         $sourceCode = preg_replace_callback("#({$this->tokenOpen})(.*?)({$this->tokenClose})#s", function ($matches) {
             $line = trim($matches[2], " \t\n\r\0\x0B;");