From 1a7bfe1de5b59af0afd1f034d7f18b9d94a6a5fd Mon Sep 17 00:00:00 2001
From: tianfenghan <rango@swoole.com>
Date: Wed, 1 Apr 2026 10:06:59 +0800
Subject: [PATCH] =?UTF-8?q?fix(preprocessor):=20=E8=A7=A3=E5=86=B3?=
 =?UTF-8?q?=E9=87=8D=E5=A4=8D=E5=87=BD=E6=95=B0=E5=92=8C=E7=B1=BB=E5=A3=B0?=
 =?UTF-8?q?=E6=98=8E=E6=A3=80=E6=9F=A5=E9=97=AE=E9=A2=98?=
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- 在函数声明前添加 prepare 步骤以确保预处理器初始化
- 添加重复函数名称检测逻辑，防止相同函数名重复声明
- 添加重复类名检测逻辑，避免类重复定义错误
- 使用小写函数名作为符号表键值进行冲突检查
- 在检测到重复声明时抛出致命错误
---
 phpunit/src/DuplicateTest.php |  1 +
 src/Php/Preprocessor.php      | 11 ++++++++++-
 2 files changed, 11 insertions(+), 1 deletion(-)

diff --git a/phpunit/src/DuplicateTest.php b/phpunit/src/DuplicateTest.php
index 767ef6ee..5653c11c 100644
--- a/phpunit/src/DuplicateTest.php
+++ b/phpunit/src/DuplicateTest.php
@@ -13,6 +13,7 @@ class DuplicateTest extends TestCase
             $compiler = CompilerTest::create(ROOT_PATH);
             $testFile = __DIR__ . '/../code/' . $file;
             $compiler->addFiles([$testFile]);
+            $compiler->prepare($testFile);
             $compiler->convert($testFile);
         } catch (TestError $exception) {
             $this->assertStringContainsString($expected, $exception->getMessage());
diff --git a/src/Php/Preprocessor.php b/src/Php/Preprocessor.php
index b0221e11..3689c70a 100644
--- a/src/Php/Preprocessor.php
+++ b/src/Php/Preprocessor.php
@@ -197,7 +197,11 @@ class Preprocessor extends CompilerBase
         if ($this->stubFile) {
             $this->addFunction($name, $this->parseFunctionDecl($v));
         } else {
-            $this->symbolDeclInFile[strtolower($name)] = $this->file;
+            $functionNameLower = strtolower($name);
+            if (isset($this->symbolDeclInFile[$functionNameLower])) {
+                $this->fatalError($v, "Duplicate function `{$functionNameLower}`");
+            }
+            $this->symbolDeclInFile[$functionNameLower] = $this->file;
         }
     }
 
@@ -227,6 +231,11 @@ class Preprocessor extends CompilerBase
                 $this->symbolCallInFile[$this->file][] = $parentClassLower;
             }
         }
+
+        if (isset($this->symbolDeclInFile[$fullClassNameLower])) {
+            $this->fatalError($class, "Duplicate class `{$fullClassName}`");
+        }
+
         $this->symbolDeclInFile[$fullClassNameLower] = $this->file;
 
         $code = '';