Warnings are now printed during codegen routine not registered to be invoked at shutdown

src/bind.inc.php

@@ -2,6 +2,8 @@
 namespace bhl_bind;
 use Exception;
 
+$GLOBALS['BHL_BIND_WARNS'] = array();
+
 function supported_tokens()
 {
   return [
@@ -48,7 +50,11 @@ function codegen(
   
   $twig->addGlobal('plugins', $options['plugins']);
 
-  return $twig->render('codegen_autobind.twig', $options);
+  $str = $twig->render('codegen_autobind.twig', $options);
+
+  print_warnings();
+
+  return $str;
 }
 
 function get_twig(array $inc_path = [])
@@ -320,13 +326,19 @@ function add_twig_support(\Twig\Environment $twig)
 
 function Warn($msg)
 {
-  //NOTE: we can't just echo the value because it will
-  //      be rendered into resulting code
-  register_shutdown_function(function() use($msg) {
-    echo "BHL BIND WARN: $msg\n";
-  });
+  global $BHL_BIND_WARNS;
+  $BHL_BIND_WARNS[] = $msg;
 }
 
+function print_warnings()
+{
+  global $BHL_BIND_WARNS;
+
+  foreach($BHL_BIND_WARNS as $msg)
+    echo "BHL BIND WARN: $msg\n";
+}
+
+
 function paginate($total, $step)
 {
   //pages are returned as an array where each element is in interval [N, Y)