fix(aot): 修复trait常量继承和数组常量传播问题

- 将trait中的私有常量改为受保护，以便子类能够访问
- 添加数组常量在继承链中的清理机制
- 实现数组常量向子类的传播功能
- 新增测试用例验证trait方法和常量继承行为

src/Php/Translator.php

@@ -628,6 +628,30 @@ CODE;
                 }
             }
         }
+
+        // Clean up inherited array constants from child classes
+        foreach ($this->classes as $className => $classDef) {
+            $ownConstNames = [];
+            foreach ($classDef->constants as $constant) {
+                if ($constant->type === self::TYPE_ARRAY) {
+                    $ownConstNames[$constant->name] = true;
+                }
+            }
+
+            $parentName = $this->escapeClass($classDef->extends);
+            while ($parentName && isset($this->classes[$parentName])) {
+                $parentDef = $this->classes[$parentName];
+                foreach ($parentDef->constants as $constant) {
+                    if ($constant->type === self::TYPE_ARRAY && !isset($ownConstNames[$constant->name])) {
+                        $ownConstNames[$constant->name] = true;
+                        $classNameStr = $this->genCharPtr($classDef->getNamespacedName(false), true);
+                        $classConstStr = $this->genCharPtr($constant->name);
+                        $code .= "php::updateConstant($classNameStr, $classConstStr, php::null);\n";
+                    }
+                }
+                $parentName = $this->escapeClass($parentDef->extends);
+            }
+        }
         $code .= '}' . PHP_EOL . PHP_EOL;
         // php_app_clean end
 
@@ -1376,6 +1400,32 @@ CODE;
                 }
             }
         }
+
+        // Propagate array constants to child classes that don't override them
+        foreach ($this->classes as $className => $classDef) {
+            $ownConstNames = [];
+            foreach ($classDef->constants as $constant) {
+                if ($constant->type === self::TYPE_ARRAY) {
+                    $ownConstNames[$constant->name] = true;
+                }
+            }
+
+            $parentName = $this->escapeClass($classDef->extends);
+            while ($parentName && isset($this->classes[$parentName])) {
+                $parentDef = $this->classes[$parentName];
+                foreach ($parentDef->constants as $constant) {
+                    if ($constant->type === self::TYPE_ARRAY && !isset($ownConstNames[$constant->name])) {
+                        $ownConstNames[$constant->name] = true;
+                        $constName = self::PREFIX . $this->getNativeName($constant->name, $parentDef->namespace, $parentDef->name);
+                        $classNameStr = $this->genCharPtr($classDef->getNamespacedName(false), true);
+                        $classConstStr = $this->genCharPtr($constant->name);
+                        $code .= "php::updateConstant($classNameStr, $classConstStr, {$constName});\n";
+                    }
+                }
+                $parentName = $this->escapeClass($parentDef->extends);
+            }
+        }
+
         return $code;
     }
 

src/Php/UniversalMethodCall.php

@@ -319,7 +319,7 @@ trait UniversalMethodCall
         ],
     ];
 
-    private const array MUTATING_HANDLERS = ['direct_method_mutate', 'php_fn_ref'];
+    protected const array MUTATING_HANDLERS = ['direct_method_mutate', 'php_fn_ref'];
 
     protected function detectUniversalMethodReturnType(string $type, string $method): ?string
     {
@@ -331,7 +331,7 @@ trait UniversalMethodCall
         return $ext ? $ext['return_type'] : null;
     }
 
-    private const array TYPE_EXTENSION_PREFIX = [
+    protected const array TYPE_EXTENSION_PREFIX = [
         CompilerBase::TYPE_INT    => 'int',
         CompilerBase::TYPE_FLOAT  => 'float',
         CompilerBase::TYPE_BOOL   => 'bool',
@@ -349,7 +349,7 @@ trait UniversalMethodCall
         return strtolower(preg_replace('/([a-z])([A-Z])/', '$1_$2', $name));
     }
 
-    private const array TO_CONVERT_FN = [
+    protected const array TO_CONVERT_FN = [
         CompilerBase::TYPE_BIGINT   => ['toInt' => 'php::BigInt::toInt', 'toFloat' => 'php::BigInt::toFloat', 'toString' => 'php::BigInt::toString'],
         CompilerBase::TYPE_BIGFLOAT => ['toInt' => 'php::BigFloat::toInt', 'toFloat' => 'php::BigFloat::toFloat', 'toString' => 'php::BigFloat::toString'],
         CompilerBase::TYPE_DECIMAL  => ['toInt' => 'php::Decimal::toInt', 'toFloat' => 'php::Decimal::toFloat', 'toString' => 'php::Decimal::toString'],
@@ -485,7 +485,7 @@ trait UniversalMethodCall
         return $kwExt ? $kwExt['return_type'] : null;
     }
 
-    private function buildInternalExtensionMethod(string $type, string $funcName): ?array
+    protected function buildInternalExtensionMethod(string $type, string $funcName): ?array
     {
         $ref = Reflection::getFunction($funcName);
         if ($ref === null) {
@@ -525,7 +525,7 @@ trait UniversalMethodCall
         ];
     }
 
-    private function validateExtensionFirstParam(string $type, \PhpAot\Php\Entity\FunctionDef $funcDef): bool
+    protected function validateExtensionFirstParam(string $type, \PhpAot\Php\Entity\FunctionDef $funcDef): bool
     {
         if (empty($funcDef->argInfoList)) {
             return false;
@@ -545,7 +545,7 @@ trait UniversalMethodCall
         return $paramType === $type;
     }
 
-    private function validateInternalExtensionFirstParam(string $type, string $funcName): bool
+    protected function validateInternalExtensionFirstParam(string $type, string $funcName): bool
     {
         $param = Reflection::getFunctionParameter($funcName, 0);
         if ($param === null) {
@@ -628,7 +628,7 @@ trait UniversalMethodCall
      * Wrap a non-variable receiver expression in the appropriate type conversion
      * so that direct C++ method calls (e.g. .get(), .set()) work on the correct type.
      */
-    private function wrapUniversalReceiver(string $type, string $expr): string
+    protected function wrapUniversalReceiver(string $type, string $expr): string
     {
         $convFns = [
             self::TYPE_ARRAY  => 'toArray',
@@ -643,7 +643,7 @@ trait UniversalMethodCall
         return $expr;
     }
 
-    private function validateUniversalMethodArgs(Node\Expr\MethodCall $expr, string $method, array $def, bool $isVar): void
+    protected function validateUniversalMethodArgs(Node\Expr\MethodCall $expr, string $method, array $def, bool $isVar): void
     {
         $argCount = count($expr->args);
         $maxArgs = $def['max_args'];
@@ -727,7 +727,7 @@ trait UniversalMethodCall
         return $cppFunc . '(' . implode(', ', $argExprs) . ')';
     }
 
-    private function buildReceiverArgs(string $receiver, array $args, int $receiverPos): array
+    protected function buildReceiverArgs(string $receiver, array $args, int $receiverPos): array
     {
         $userArgs = [];
         foreach ($args as $arg) {

tests/aot/trait/012.phpt

@@ -3,7 +3,7 @@ Single Trait with simple trait method
 --FILE--
 <?php
 trait THello {
-    private const array CONST_ARRAY = [
+    protected const array CONST_ARRAY = [
         'test_fn_1' => ['toInt' => 123,],
         'test_fn_2' => ['toInt' => 234, ],
         'test_fn_3' => ['toInt' => 333,],

tests/aot/trait/013.phpt

@@ -0,0 +1,41 @@
+--TEST--
+Single Trait with simple trait method
+--FILE--
+<?php
+trait THello {
+    public const array CONST_ARRAY = [ 'foo' ];
+}
+
+class TraitsTest {
+    use THello;
+}
+
+class Test2 extends TraitsTest {
+}
+
+class Test3 extends Test2 {
+    public function foo() {
+        var_dump(static::CONST_ARRAY);
+    }
+}
+
+function main() {
+    $o2 = new Test3();
+    eval("var_dump(Test3::CONST_ARRAY);");
+    var_dump(Test3::CONST_ARRAY);
+    $o2->foo();
+}
+?>
+--EXPECT--
+array(1) {
+  [0]=>
+  string(3) "foo"
+}
+array(1) {
+  [0]=>
+  string(3) "foo"
+}
+array(1) {
+  [0]=>
+  string(3) "foo"
+}