feat(php): 添加对函数调用占位符的支持并实现作用域切换功能

- 在 AstNodeType 中添加 isPlaceholderExpr 方法用于检测占位符表达式
- 在 CompilerBase 中添加对函数调用占位符的特殊处理逻辑
- 使用 isPlaceholderExpr 替换直接的类型检查以统一占位符判断
- 在 C++ 层面实现 php_switch_scope 和 php_restore_scope 功能
- 在 PlaceHolderGenerator 中添加作用域切换代码生成逻辑
- 添加新的测试用例验证静态方法占位符调用功能

src/Php/AstNodeType.php

@@ -11,6 +11,7 @@ namespace PhpAot\Php;
 use PhpParser\Node;
 use PhpParser\Node\Expr;
 use PhpParser\NodeAbstract;
+use PhpParser\Node\VariadicPlaceholder;
 
 trait AstNodeType
 {
@@ -95,4 +96,9 @@ trait AstNodeType
             or $expr instanceof Node\Expr\MethodCall
             or $expr instanceof Node\Expr\StaticCall;
     }
+
+    protected function isPlaceholderExpr(NodeAbstract $expr): bool
+    {
+        return $expr instanceof VariadicPlaceholder;
+    }
 }

src/Php/CompilerBase.php

@@ -1565,6 +1565,10 @@ class CompilerBase extends \PhpAot\Core\Translator
         if (!$this->checkAccessible($classDef, $methodDef)) {
             $this->fatalError($expr, 'Method `' . $classDef->getNamespacedName() . '::' . $method . '()` is not accessible');
         }
+        // 函数调用占位符，不是真实的函数调用
+        if (count($expr->args) === 1 and $this->isPlaceholderExpr($expr->args[0])) {
+            return false;
+        }
         if (count($expr->args) < $methodDef->functionDef->argCountRequired) {
             $this->fatalError($expr, 'Method `' . $classDef->getNamespacedName() . '::' . $method . '()` requires ' . $methodDef->functionDef->argCountRequired . ' arguments, ' . count($expr->args) . ' given');
         } elseif (count($expr->args) > count($methodDef->functionDef->argInfoList)) {
@@ -2199,7 +2203,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $hasNamedArg = false;
         // 对命名参数进行重排
         foreach ($callArgs as $i => $arg) {
-            if ($arg instanceof Node\VariadicPlaceholder) {
+            if ($this->isPlaceholderExpr($arg)) {
                 throw new PlaceHolder();
             }
             if ($arg->name) {
@@ -2242,7 +2246,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         $list_args = [];
         $last = array_key_last($args);
         foreach ($args as $i => $arg) {
-            if ($arg instanceof Node\VariadicPlaceholder) {
+            if ($this->isPlaceholderExpr($arg)) {
                 throw new PlaceHolder();
             }
             if ($arg->name !== null) {

src/Php/Generator/PlaceHolderGenerator.php

@@ -14,6 +14,11 @@ trait PlaceHolderGenerator
     {
         $ce = $this->getClassEntryPtr(\Closure::class);
         $fn = $ce . ', ' . $this->getFuncPtr('Closure::fromCallable', false);
+        $tmpVar = $this->genTmpVarName();
+        if ($this->classDef) {
+            $this->beforeStmtLines[] = "auto $tmpVar = php_switch_scope(this_);";
+            $this->afterStmtLines[] = "php_restore_scope($tmpVar);";
+        }
         return 'php::call(' . $fn . ', {' . $callable . '})';
     }
 }

src/cpp/main.cc

@@ -36,6 +36,25 @@ zend_class_entry *php_get_called_ce(php::Object &this_) {
     }
 }
 
+static zend_execute_data *get_frame() {
+	zend_execute_data *frame = EG(current_execute_data);
+	while (frame && (!frame->func || !ZEND_USER_CODE(frame->func->type))) {
+		frame = frame->prev_execute_data;
+	}
+	return frame;
+}
+
+zend_class_entry *php_switch_scope(php::Object &this_) {
+	auto frame = get_frame();
+	auto ori_scope = frame->func->common.scope;
+	frame->func->common.scope = php_get_called_ce(this_);
+	return ori_scope;
+}
+
+void php_restore_scope(zend_class_entry *ori_scope) {
+	get_frame()->func->common.scope = ori_scope;
+}
+
 void module_shutdown(zend_module_entry *module) {
     /**
      * There is a bug in PHP's handling of internal strings. All interned strings are released in the request shutdown

src/cpp/php_aot_helper.h

@@ -9,6 +9,8 @@ extern zend_function *php_get_method(int func_id, const php::Str &method_name, i
 
 extern const char *php_get_called_class(php::Object &this_);
 extern zend_class_entry *php_get_called_ce(php::Object &this_);
+extern zend_class_entry *php_switch_scope(php::Object &this_);
+extern void php_restore_scope(zend_class_entry *ori_scope);
 
 static inline php::Variant CALL(int func_id, const php::Str &func_name) {
     return php::call(php_get_func(func_id, func_name));

tests/aot/private-prop-002.phpt

@@ -0,0 +1,24 @@
+--TEST--
+Static Class Property Read/Write Test
+--FILE--
+<?php
+class Worker
+{
+    protected static function checkErrors(): void
+    {
+        var_dump(__METHOD__);
+    }
+
+    public static function init()
+    {
+        $fn = self::checkErrors(...);
+        $fn();
+    }
+}
+
+function main() {
+    Worker::init();
+}
+?>
+--EXPECT--
+string(19) "Worker::checkErrors"