Fix parsing $offset[yield] ?? null

Author: thekid

ChangeLog.md

@@ -3,6 +3,10 @@ XP AST ChangeLog
 
 ## ?.?.? / ????-??-??
 
+## 12.2.1 / 2026-06-26
+
+* Fixed parsing `$offset[yield] ?? null` - @thekid
+
 ## 12.2.0 / 2026-05-23
 
 * Merged PR #61: Refactor function scopes: Capturing and returning.

src/main/php/lang/ast/syntax/PHP.class.php

@@ -373,18 +373,16 @@ public function __construct() {
       if ('from' === $parse->token->value) {
         $parse->forward();
         return new YieldFromExpression($this->expression($parse, 0), $token->line);
+      } else if ('operator' === $parse->token->kind && '(' !== $parse->token->value) {
+        return new YieldExpression(null, null, $token->line);
+      }
+
+      $expr= $this->expression($parse, 0);
+      if ('=>' === $parse->token->value) {
+        $parse->forward();
+        return new YieldExpression($expr, $this->expression($parse, 0), $token->line);
       } else {
-        $expr= $this->expression($parse, 0);
-        if ('operator' === $expr->kind) {
-          array_unshift($parse->queue, $parse->token);
-          $parse->token= $expr;
-          return new YieldExpression(null, null, $token->line);
-        } else if ('=>' === $parse->token->value) {
-          $parse->forward();
-          return new YieldExpression($expr, $this->expression($parse, 0), $token->line);
-        } else {
-          return new YieldExpression(null, $expr, $token->line);
-        }
+        return new YieldExpression(null, $expr, $token->line);
       }
     });