From 9526f9992b284721d119c7819acbda13f747638e Mon Sep 17 00:00:00 2001
From: tianfenghan <rango@swoole.com>
Date: Tue, 17 Mar 2026 19:31:36 +0800
Subject: [PATCH] =?UTF-8?q?feat(closure):=20=E5=AE=8C=E5=96=84=E9=97=AD?=
 =?UTF-8?q?=E5=8C=85=20use=20=E8=AF=AD=E6=B3=95=E6=94=AF=E6=8C=81?=
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- 添加对非变量表达式的错误检查，只允许变量名
- 实现闭包 use 引用类型的就地变量创建功能
- 在当前作用域中为引用变量设置正确的类型标识
- 改进普通变量的未定义变量错误检查逻辑
- 确保闭包 use 语法的类型安全性和变量可见性
---
 src/Php/Generator/ClosureGenerator.php | 17 +++++++++++++++--
 1 file changed, 15 insertions(+), 2 deletions(-)

diff --git a/src/Php/Generator/ClosureGenerator.php b/src/Php/Generator/ClosureGenerator.php
index a77afa90..ec14f020 100644
--- a/src/Php/Generator/ClosureGenerator.php
+++ b/src/Php/Generator/ClosureGenerator.php
@@ -86,12 +86,25 @@ trait ClosureGenerator
         if ($uses) {
             foreach ($uses as $useItem) {
                 $var = $this->parseIdentifier($useItem->var);
-                if ($this->isVarExpr($useItem->var) and !$this->hasVar($var)) {
-                    $this->errorUndefinedVariable($useItem->var);
+                if (!$this->isVarExpr($useItem->var)) {
+                    $this->fatalError($useItem->var, 'Incorrect Closure use syntax, only variable names are allowed');
                 }
                 if ($useItem->byRef) {
+                    // 闭包的 use 语法，若为引用类型，可以就地创建变量
+                    if ($useCurrentScope) {
+                        if (!isset($oriLocalVars[$var])) {
+                            $oriLocalVars[$var] = self::TYPE_REF;
+                        }
+                    } else {
+                        if (!$this->hasVar($var)) {
+                            $this->addLocalVar($var, self::TYPE_REF);
+                        }
+                    }
                     $useVars[] = $this->convertToRef($useItem->var);
                 } else {
+                    if (!$this->hasVar($var)) {
+                        $this->errorUndefinedVariable($useItem->var);
+                    }
                     $useVars[] = $var;
                 }
             }