feat(php): 添加属性访问控制和对象类型检查功能

- 在 ClassDef 中添加 hasProperty 和 getProperty 方法用于属性访问
- 在 CompilerBase 中添加 isTypedObject 方法检查对象类型
- 将 offsetGetIndirect 替换为 item 方法统一访问接口
- 实现 getPropertyIdentifier 方法支持属性标识符解析
- 添加对私有/受保护属性访问权限的检查和错误处理
- 将 getPropertyIndirect 替换为 attr 方法进行属性访问
- 添加属性引用访问支持通过 attrRef 方法实现
- 更新 identifierToStr 参数类型为 NodeAbstract
- 在 PropertyDef 中添加访问修饰符检查方法(isPrivate/isProtected/isPublic)
- 添加属性引用测试用例验证功能正确性

src/Php/ClassDef.php

@@ -31,4 +31,14 @@ class ClassDef extends ClassLikeDef
     {
         return isset($this->methods[$method]);
     }
+
+    public function hasProperty(string $property): bool
+    {
+        return isset($this->properties[$property]);
+    }
+
+    public function getProperty($property): PropertyDef
+    {
+        return $this->properties[$property];
+    }
 }

src/Php/CompilerBase.php

@@ -238,6 +238,11 @@ class CompilerBase extends \PhpAot\Core\Translator
         return isset($this->nativeFunctions[$name]);
     }
 
+    public function isTypedObject(string $object): bool
+    {
+        return isset($this->objects[$object]);
+    }
+
     protected function resetFunction(): void
     {
         $this->localVars = [];
@@ -857,7 +862,7 @@ class CompilerBase extends \PhpAot\Core\Translator
                     if (!$this->hasVar($var)) {
                         $this->addLocalVar($var, self::TYPE_VAR);
                     }
-                    $code .= "$var = $tmpVar.offsetGetIndirect($k); ";
+                    $code .= "$var = $tmpVar.item($k); ";
                 } else {
                     abort($item);
                 }
@@ -1470,7 +1475,7 @@ class CompilerBase extends \PhpAot\Core\Translator
             $this->fatalError($node, 'Unsupported operand types: null + array');
         }
         $dim = $this->parseIdentifier($node->dim);
-        return $var . '.offsetGetIndirect(' . $this->trimBrackets($dim) . ', ' . $this->escapeBool($write) . ')';
+        return $var . '.item(' . $this->trimBrackets($dim) . ', ' . $this->escapeBool($write) . ')';
     }
 
     protected function parseArrayDimStore($array, $dim, $var): string
@@ -2151,18 +2156,38 @@ class CompilerBase extends \PhpAot\Core\Translator
         return implode(PHP_EOL . $this->getIndent(), $lines);
     }
 
-    protected function parsePropertyFetch(Node\Expr\PropertyFetch $expr, bool $assign = false): string
+    protected function getPropertyIdentifier(NodeAbstract $object, NodeAbstract $property): string
     {
-        $object = $expr->var;
-        $property = $expr->name;
         $id = $this->identifierToStr($property);
         if ($this->isVarExpr($object) and $this->isIdExpr($property)) {
-            if ($this->parseIdentifier($object) === 'this_') {
-                $id = self::PREFIX . $this->getPropertyOffset($property, $this->class, $this->namespace);
+            $objectName = $this->parseIdentifier($object);
+            $propertyName = $this->parseIdentifier($property);
+            if ($objectName === 'this_') {
+                $id = self::PREFIX . $this->getPropertyOffset($propertyName, $this->class, $this->namespace);
+            } elseif ($this->isTypedObject($objectName)) {
+                $class = $this->objects[$objectName];
+                if (isset($this->classes[$class])) {
+                    $classDef = $this->classes[$class];
+                    if ($classDef->hasProperty($propertyName)) {
+                        $propertyDef = $classDef->getProperty($propertyName);
+                        if ($propertyDef->isPublic() or $this->class === $class) {
+                            $id = self::PREFIX . $this->getPropertyOffset($propertyName, $class, $classDef->namespace);
+                        } else {
+                            $this->fatalError($property, "Cannot access private/protected property `$propertyName` of class `$class`");
+                        }
+                    }
+                }
             }
         }
+        return $id;
+    }
 
-        return $this->convertToObject($object) . '.getPropertyIndirect(' . $id . ', ' . $this->escapeBool($assign) . ')';
+    protected function parsePropertyFetch(Node\Expr\PropertyFetch $expr, bool $update = false): string
+    {
+        $object = $expr->var;
+        $property = $expr->name;
+        $id = $this->getPropertyIdentifier($object, $property);
+        return $this->convertToObject($object) . '.attr(' . $id . ', ' . $this->escapeBool($update) . ')';
     }
 
     protected function parseAssignOpShiftRight(Node $node): string
@@ -2525,7 +2550,7 @@ class CompilerBase extends \PhpAot\Core\Translator
                 $left = $this->parseIdentifier($expr->var);
                 $object = $this->convertToObject($expr->expr->var);
                 $prop = $this->identifierToStr($expr->expr->name);
-                return $left . ' = ' . $object . '.getPropertyReference(' . $prop . ')';
+                return $left . ' = ' . $object . '.attrRef(' . $prop . ')';
             }
         }
         abort($expr);
@@ -2546,7 +2571,7 @@ class CompilerBase extends \PhpAot\Core\Translator
         }
     }
 
-    protected function identifierToStr(Node $node, bool $require = true): string
+    protected function identifierToStr(NodeAbstract $node, bool $require = true): string
     {
         $id = $this->parseIdentifier($node);
         if ($this->isVarExpr($node)) {

src/Php/PropertyDef.php

@@ -2,18 +2,35 @@
 
 namespace PhpAot\Php;
 
+use PhpParser\Modifiers;
+
 class PropertyDef
 {
     public string $name;
     public string $type;
-    public string $flags;
+    public int $flags;
     public ?string $default =  null;
 
-    public function __construct(string $name, string $flags, string $type, ?string $default = null)
+    public function __construct(string $name, int $flags, string $type, ?string $default = null)
     {
         $this->flags = $flags;
         $this->name = $name;
         $this->type = $type;
         $this->default = $default;
     }
+
+    public function isPrivate(): bool
+    {
+        return $this->flags & Modifiers::PRIVATE;
+    }
+
+    public function isProtected(): bool
+    {
+        return $this->flags & Modifiers::PROTECTED;
+    }
+
+    public function isPublic(): bool
+    {
+        return !$this->isPrivate() && !$this->isProtected();
+    }
 }

tests/aot/prop-ref.phpt

@@ -0,0 +1,17 @@
+--TEST--
+object property ref
+--FILE--
+<?php
+class TestRef {
+    public int $a = 999;
+}
+function main()
+{
+    $o = new TestRef();
+    $ref = &$o->a;
+    $ref = 2026;
+    var_dump($o->a);
+}
+?>
+--EXPECT--
+int(2026)