feat(php): 添加对void类型方法调用的检查

- 在CompilerBase.php中检测接收器类型为void时抛出致命错误
- 为变量表达式方法调用添加void类型检查
- 为命名方法调用添加void类型检查
- 在单元测试中添加void方法调用测试用例
- 创建void方法调用测试代码文件

phpunit/code/void-method-call.php

@@ -0,0 +1,9 @@
+<?php
+function bar(): void {
+    var_dump(__FUNCTION__);
+}
+
+function main()
+{
+    var_dump(bar()->toString());
+}

phpunit/src/UniversalMethodCallTest.php

@@ -16,4 +16,9 @@ class UniversalMethodCallTest extends \BaseTest
     {
         $this->exec('Cannot call mutating method `push()` on a non-variable expression', 'universal-method-mutating-expr.php');
     }
+
+    public function testVoidMethodCall()
+    {
+        $this->exec('Cannot call method on void', 'void-method-call.php');
+    }
 }

src/Php/CompilerBase.php

@@ -5438,6 +5438,9 @@ class CompilerBase extends \PhpAot\Core\Translator
                 } else {
                     $receiverType = $this->detectTypeOfExpr($expr->var);
                 }
+                if ($receiverType === self::TYPE_VOID) {
+                    $this->fatalError($expr->var, 'Cannot call method on void');
+                }
                 if ($methodName === 'toObject') {
                     return $this->genToObjectCall($expr, $object);
                 }
@@ -5479,6 +5482,9 @@ class CompilerBase extends \PhpAot\Core\Translator
         // 表达式返回值也可使用内置方法：fn()->method(), $obj->fn()->method(), Foo::fn()->method(), $obj->prop->method()
         if (!$this->isVarExpr($expr->var) and $this->isNamedMethod($expr->name)) {
             $type = $this->detectTypeOfExpr($expr->var);
+            if ($type === self::TYPE_VOID) {
+                $this->fatalError($expr->var, 'Cannot call method on void');
+            }
             if ($type !== self::TYPE_VAR && !$this->checkArgType($type, self::TYPE_OBJECT)) {
                 $methodName = $expr->name->toString();
                 $fn = $this->findUniversalMethodAnyType($type, $methodName);