feat(converter): add Python to TypePHP conversion features

- Support chained assignments like x = y = 1
- Implement destructuring assignments using ->toArray() conversion
- Add walrus operator (:=) expression support
- Enable function decorator handling with variable rebinding
- Support floor division //= and matrix multiplication @= operators
- Add tuple/list target expansion for del statements
- Convert pure annotations to comments instead of errors
- Rename main function to main_ to avoid TypePHP entry point conflict
- Generate proper decorator rebindings in main() section
- Handle decorated function calls through variable indirection
- Support stacked decorators with bottom-up application order
- Process decorator factories with argument evaluation
- Add imported symbol decorator support
- Implement proper global variable injection for decorated functions

docs/PY2PHP.md

@@ -26,21 +26,21 @@
 | Python 语法 | 状态 | 转换规则 / 报错 |
 |---|---|---|
 | `x = expr` | ✅ | `$x = expr;`，模块级变量自动注入 `global` |
-| `x += expr` 等增强赋值 | ✅ | 支持 `+ - * / % ** << >> | ^ &` 系列；`//=` 不支持 |
+| `x = y = 1`（链式赋值） | ✅ | `$x = $y = 1;`（仅限名称目标；含属性/下标目标时报错） |
+| `x += expr` 等增强赋值 | ✅ | 支持 `+ - * / % ** << >> \| ^ &` 系列；`//=` `@=` 展开为 `python\operator\floordiv/matmul($x, ...)` 调用 |
 | `x: int = expr` | ✅ | 忽略注解，转换为普通赋值 |
-| `x: int`（纯注解） | ❌ | `AnnAssign: annotation-only assignments have no TypePHP runtime value` |
-| `x = y = 1` | ❌ | `Assign: chained assignments are not supported yet` |
-| `a, b = x`（解构） | ❌ | `Assign: destructuring assignments are not supported yet` |
-| `def f(...)` | ✅ | 见「函数签名」；函数名为 `main` 报错（与 TypePHP 入口冲突） |
+| `x: int`（纯注解） | ✅ | 转为注释 `// annotation-only declaration: x`，不登记为模块全局 |
+| `a, b = x`（解构） | ✅ | `[$a, $b] = $x->toArray();`（PyObject 转 PHP 数组后解构；元素允许名称/属性/下标。嵌套解构、星号解构 `a, *b = x`、链式解构不支持。元素个数不匹配时按 PHP 语义补 null，不报 Python 的 ValueError） |
+| `def f(...)` | ✅ | 见「函数签名」；名为 `main` 的函数重命名为 `main_`（避免与 TypePHP 入口冲突），调用点同步改写 |
 | 嵌套 `def` | ❌ | `FunctionDef: nested functions require Python closure scope analysis` |
-| `@decorator` | ❌ | `FunctionDef: function decorators are not supported yet` |
+| `@decorator` | ✅ | 见「函数装饰器」 |
 | `return [expr]` | ✅ | `return [expr];` |
 | `if / elif / else` | ✅ | 同构转换 |
 | `while` | ✅ | 同构转换；`while/else` 不支持 |
 | `for i in iter` | ✅ | `foreach (iter as $i)`；`for/else`、元组目标不支持 |
 | `break` / `continue` / `pass` | ✅ | `pass` → `// pass` 注释 |
 | `global x` | ✅ | `global $x;`（与自动注入的 global 并存时会重复出现，冗余但合法，属已知行为） |
-| `del x` / `del o.a` / `del d[k]` | ✅ | `unset(...)`；其他目标类型报错 `Delete: unsupported del target` |
+| `del x` / `del o.a` / `del d[k]` | ✅ | `unset(...)`；`del (a, b)` 元组/列表目标逐项展开；非法 del 目标（如 `del f()`）由 Python 解析器先行拒绝 |
 | 模块级字符串字面量（docstring） | ✅ | 转为 `/** ... */` 注释（`*/` 转义为 `* /`） |
 | `import a.b` | ✅ | `use python\a;`（仅首段作为别名，见「已知行为」） |
 | `import a.b as x` | ✅ | `use python\a\b as x;`（别名等于末段时省略 `as`） |
@@ -90,10 +90,36 @@
 | 下标 `a[i]` / 切片 `a[l:u:s]` | ✅ | `$a[$i]` / `$a[python\slice(l, u, s)]`（缺省为 `null`） |
 | f-string | ✅ | 拼接 + `->toString()`；运算符等优先级敏感表达式整体加括号 |
 | f-string 的 `!r` 转换 / `:03d` 格式说明 | ❌ | `FormattedValue: formatted f-string conversions are not supported yet` |
-| 海象 `:=` | ❌ | `NamedExpr` |
+| 海象 `:=` | ✅ | 表达式内赋值 `($n = 10)` |
 | 推导式 / 生成器表达式 | ❌ | `ListComp` / `SetComp` / `DictComp` / `GeneratorExp` |
 | `yield` / `yield from` | ❌ | `Yield` / `YieldFrom` |
 
+## 函数装饰器
+
+装饰器在 `main()` 起始处（其他顶层语句之前）按 Python 语义**自底向上**重绑定到同名模块变量：
+
+```python
+@a
+@b
+def greet(): ...
+```
+
+```php
+function greet() { ... }
+
+function main(): void
+{
+    global $greet;
+    $greet = b('greet');
+    $greet = a('greet');
+    ...
+}
+```
+
+- 装饰器可以是已定义函数、`from m import f` 导入符号、模块属性或装饰器工厂（`@dec('x')` → `$greet = dec('x')('greet');`）
+- 被装饰函数名登记为模块全局，所有调用点（包括其他函数体内）经 `global` + 变量间接调用装饰结果：`$greet()`
+- 被装饰函数体内的递归调用同样解析到装饰后的变量，与 Python 语义一致
+
 ## print / sys.exit 降级规则
 
 仅当 PHP 行为与 Python 完全一致时才降级为原生语句：
@@ -113,6 +139,8 @@
 2. 函数内显式 `global x` 与按模块全局自动注入的 `global x` 会重复出现（合法 PHP）。
 3. `print = str` 这类把内置名赋给变量的写法，右侧按变量处理（`$print = $str;`），不做内置名解析。
 4. bytes/complex 字面量的报错没有行号（常量在 AST 加载阶段编码，位置信息未传递）。
+5. 装饰器重绑定统一在 `main()` 起始处执行，与 Python "def 处即装饰" 的精确位置略有差异；装饰器表达式若依赖顶层语句后段的赋值，求值时机可能不同。
+6. 被装饰函数名会登记为模块全局，导致所有函数的自动 `global` 注入清单中出现该名字（冗余但合法）。
 
 ## 运行测试
 

phpunit/src/PythonTools/PythonToTypePhpConverterTest.php

@@ -240,6 +240,43 @@ PYTHON, 'native-statements.py');
                 "import os.path as ospath\n",
                 ['use python\\os\\path as ospath;'],
             ],
+            '链式赋值' => [
+                "x = y = 1\n",
+                ['global $x, $y;', '$x = $y = 1;'],
+            ],
+            '解构赋值转 toArray' => [
+                "a, b = x\n",
+                ['global $a, $b;', '[$a, $b] = $x->toArray();'],
+            ],
+            '解构元组字面量' => [
+                "a, b = (1, 2)\n",
+                ['[$a, $b] = python\\tuple([1, 2])->toArray();'],
+            ],
+            '解构到属性与下标' => [
+                "o.a, d['k'] = pair\n",
+                ["[\$o->a, \$d['k']] = \$pair->toArray();"],
+            ],
+            '整除增强赋值展开为函数调用' => [
+                "x = 7\nx //= 2\n",
+                ['$x = python\\operator\\floordiv($x, 2);'],
+            ],
+            '矩阵乘增强赋值展开为函数调用' => [
+                "x = a\nx @= b\n",
+                ['$x = python\\operator\\matmul($x, $b);'],
+            ],
+            'del 元组目标逐项展开' => [
+                "x = 1\ny = 2\ndel (x, y)\n",
+                ['unset($x);', 'unset($y);'],
+            ],
+            '纯注解声明转为注释且不登记全局' => [
+                "x: int\ny = 1\n",
+                ['// annotation-only declaration: x', 'global $y;'],
+                ['global $x'],
+            ],
+            'main 函数重命名为 main_' => [
+                "def main():\n    return 1\n\nprint(main())\n",
+                ['function main_()', 'python\\print(main_());'],
+            ],
         ];
     }
 
@@ -319,9 +356,101 @@ PYTHON, 'native-statements.py');
             'f-string 名称插值' => ['x = 1' . "\n" . 'print(f"{x}")' . "\n", ['echo $x->toString(), "\\n";']],
             'f-string 文本与插值拼接' => ['x = 1' . "\n" . 'print(f"v={x}")' . "\n", ["echo 'v=' . \$x->toString(), \"\\n\";"]],
             'f-string 运算符整体加括号' => ['x = 1' . "\n" . 'print(f"{x + 1}")' . "\n", ['echo ($x + 1)->toString(), "\\n";']],
+            '海象运算符' => ["if (n := 10):\n    print(n)\n", ['if (($n = 10))', 'python\\print($n);']],
         ];
     }
 
+    // ---------------------------------------------------------------
+    // 函数装饰器
+    // ---------------------------------------------------------------
+
+    public function testSimpleDecoratorRebindsModuleVariable(): void
+    {
+        $php = $this->convert(<<<'PYTHON'
+def dec(f):
+    return f
+
+@dec
+def greet():
+    return 1
+
+greet()
+PYTHON);
+
+        self::assertStringContainsString('$greet = dec(\'greet\');', $php);
+        // 调用点经变量间接调用装饰结果，而不是直连原函数
+        self::assertStringContainsString('$greet();', $php);
+        self::assertStringNotContainsString('    greet();', $php);
+    }
+
+    public function testDecoratorFactoryEvaluatesBeforeRebinding(): void
+    {
+        $php = $this->convert(<<<'PYTHON'
+def dec(prefix):
+    return lambda f: f
+
+@dec('x')
+def greet():
+    return 1
+PYTHON);
+
+        self::assertStringContainsString('$greet = dec(\'x\')(\'greet\');', $php);
+    }
+
+    public function testStackedDecoratorsApplyBottomUp(): void
+    {
+        $php = $this->convert(<<<'PYTHON'
+def a(f):
+    return f
+
+def b(f):
+    return f
+
+@a
+@b
+def greet():
+    return 1
+PYTHON);
+
+        self::assertStringContainsString('$greet = b(\'greet\');', $php);
+        self::assertStringContainsString('$greet = a(\'greet\');', $php);
+        self::assertLessThan(
+            strpos($php, '$greet = a(\'greet\');'),
+            strpos($php, '$greet = b(\'greet\');'),
+        );
+    }
+
+    public function testImportedSymbolDecorator(): void
+    {
+        $php = $this->convert(<<<'PYTHON'
+from functools import cache
+
+@cache
+def compute():
+    return 1
+PYTHON);
+
+        self::assertStringContainsString('$compute = python\\functools\\cache(\'compute\');', $php);
+    }
+
+    /** 被装饰函数进入模块全局，函数内调用点经 global + 变量间接调用。 */
+    public function testDecoratedFunctionCallInsideAnotherFunction(): void
+    {
+        $php = $this->convert(<<<'PYTHON'
+def dec(f):
+    return f
+
+@dec
+def greet():
+    return 1
+
+def run():
+    return greet()
+PYTHON);
+
+        self::assertStringContainsString("function run()\n{\n    global \$greet;\n    return \$greet();", $php);
+    }
+
     // ---------------------------------------------------------------
     // 运算符映射
     // ---------------------------------------------------------------
@@ -464,24 +593,20 @@ PYTHON, 'native-statements.py');
             'yield' => ["def f():\n    yield 1\n", 'case.py:2: unsupported Python syntax Yield'],
             'nonlocal' => ["def f():\n    x = 1\n    nonlocal x\n", 'case.py:3: unsupported Python syntax Nonlocal'],
             'and/or 布尔运算' => ["x = a and b\n", 'case.py:1: unsupported Python syntax BoolOp'],
-            '海象运算符' => ["if (n := 10):\n    pass\n", 'case.py:1: unsupported Python syntax NamedExpr'],
             '列表推导式' => ["x = [i for i in range(3)]\n", 'case.py:1: unsupported Python syntax ListComp'],
             '字典推导式' => ["x = {k: v for k, v in d}\n", 'case.py:1: unsupported Python syntax DictComp'],
             '生成器表达式' => ["x = sum(i for i in range(3))\n", 'case.py:1: unsupported Python syntax GeneratorExp'],
-            '链式赋值' => ["x = y = 1\n", 'case.py:1: unsupported Python syntax Assign: chained assignments'],
-            '解构赋值' => ["a, b = x\n", 'case.py:1: unsupported Python syntax Assign: destructuring assignments'],
-            '纯注解赋值' => ["x: int\n", 'case.py:1: unsupported Python syntax AnnAssign: annotation-only'],
-            '整除增强赋值' => ["x = 1\nx //= 2\n", 'case.py:2: unsupported Python syntax AugAssign: unsupported binary operator FloorDiv'],
+            '非名称目标的链式赋值' => ["a.b = c = 1\n", 'case.py:1: unsupported Python syntax Assign: chained assignments are only supported for plain name targets'],
+            '嵌套解构' => ["a, (b, c) = x\n", 'case.py:1: unsupported Python syntax Assign: nested destructuring'],
+            '星号解构' => ["a, *b = x\n", 'case.py:1: unsupported Python syntax Assign: starred destructuring'],
+            '链式解构' => ["a, b = c = x\n", 'case.py:1: unsupported Python syntax Assign: destructuring with chained targets'],
             'while/else' => ["while True:\n    pass\nelse:\n    pass\n", 'case.py:1: unsupported Python syntax While: while/else'],
             'for/else' => ["for i in x:\n    pass\nelse:\n    pass\n", 'case.py:1: unsupported Python syntax For: for/else'],
             'for 元组目标' => ["for a, b in x:\n    pass\n", 'case.py:1: unsupported Python syntax For: only a simple for-loop target'],
-            'del 不支持的元组目标' => ["x = (1, 2)\ndel (x)\n", 'case.py:2: unsupported Python syntax Delete: unsupported del target'],
             '模块属性赋值' => ["import sys\nsys.stdout = None\n", 'case.py:2: unsupported Python syntax Attribute: Python module attributes cannot be assigned'],
             '相对导入' => ["from . import mod\n", 'case.py:1: unsupported Python syntax ImportFrom: relative imports'],
             '星号导入' => ["from os import *\n", 'case.py:1: unsupported Python syntax ImportFrom: star imports'],
-            'main 函数名冲突' => ["def main():\n    pass\n", 'case.py:1: unsupported Python syntax FunctionDef: a Python function named main conflicts'],
             '嵌套函数' => ["def f():\n    def g():\n        pass\n", 'case.py:2: unsupported Python syntax FunctionDef: nested functions'],
-            '函数装饰器' => ["@decorator\ndef f():\n    pass\n", 'case.py:2: unsupported Python syntax FunctionDef: function decorators'],
             '同时变长与关键字变长' => ["def f(*a, **kw):\n    pass\n", 'case.py:1: unsupported Python syntax FunctionDef: simultaneous *args and **kwargs'],
             '链式比较' => ["x = 1 < 2 < 3\n", 'case.py:1: unsupported Python syntax Compare: chained comparisons'],
             'f-string 转换符' => ['x = 1' . "\n" . 'print(f"{x!r}")' . "\n", 'case.py:2: unsupported Python syntax FormattedValue'],

src/PythonTools/Converter/PythonToTypePhpConverter.php

@@ -15,6 +15,9 @@ final class PythonToTypePhpConverter
     /** @var array<string, true> */
     private array $definedFunctions = [];
 
+    /** @var array<string, true> 被装饰的函数：调用点必须经变量间接调用装饰结果 */
+    private array $decoratedFunctions = [];
+
     /** @var array<string, true> */
     private array $moduleGlobals = [];
 
@@ -41,6 +44,7 @@ final class PythonToTypePhpConverter
         $this->moduleAliases = [];
         $this->importedSymbols = [];
         $this->definedFunctions = [];
+        $this->decoratedFunctions = [];
         $this->moduleGlobals = [];
         $this->indent = 0;
         $tree = $this->loader->parse($source, $filename);
@@ -49,10 +53,20 @@ final class PythonToTypePhpConverter
 
         foreach ($tree['body'] ?? [] as $node) {
             if (in_array($node['_type'] ?? '', ['Assign', 'AnnAssign', 'AugAssign'], true)) {
-                $targets = ($node['_type'] ?? '') === 'Assign' ? ($node['targets'] ?? []) : [$node['target'] ?? []];
-                foreach ($targets as $target) {
-                    if (($target['_type'] ?? '') === 'Name') {
-                        $this->moduleGlobals[(string) $target['id']] = true;
+                // 纯注解声明没有运行期值，不登记为模块全局变量
+                $annotationOnly = ($node['_type'] ?? '') === 'AnnAssign' && ($node['value'] ?? null) === null;
+                if (!$annotationOnly) {
+                    $targets = ($node['_type'] ?? '') === 'Assign' ? ($node['targets'] ?? []) : [$node['target'] ?? []];
+                    foreach ($targets as $target) {
+                        // 解构赋值展开为其中的名称元素
+                        $elements = in_array($target['_type'] ?? '', ['Tuple', 'List'], true)
+                            ? ($target['elts'] ?? [])
+                            : [$target];
+                        foreach ($elements as $element) {
+                            if (($element['_type'] ?? '') === 'Name') {
+                                $this->moduleGlobals[(string) $element['id']] = true;
+                            }
+                        }
                     }
                 }
             }
@@ -61,10 +75,12 @@ final class PythonToTypePhpConverter
                 $this->collectImport($node);
             } elseif ($type === 'FunctionDef') {
                 $name = (string) $node['name'];
-                if ($name === 'main') {
-                    $this->unsupported($node, 'a Python function named main conflicts with the TypePHP entry point');
-                }
                 $this->definedFunctions[$name] = true;
+                if (($node['decorator_list'] ?? []) !== []) {
+                    // 装饰结果绑定到模块级变量，函数内调用需要 global 注入
+                    $this->decoratedFunctions[$name] = true;
+                    $this->moduleGlobals[$name] = true;
+                }
                 $functions[] = $node;
             } else {
                 $main[] = $node;
@@ -92,6 +108,12 @@ final class PythonToTypePhpConverter
         if ($this->moduleGlobals !== []) {
             $lines[] = $this->line('global ' . implode(', ', $this->variables(array_keys($this->moduleGlobals))) . ';');
         }
+        // 装饰器重绑定先于其他顶层语句执行，使后续调用拿到装饰结果
+        foreach ($functions as $function) {
+            foreach ($this->decoratorRebindings($function) as $rebinding) {
+                $lines[] = $this->line($rebinding);
+            }
+        }
         foreach ($main as $node) {
             array_push($lines, ...$this->statement($node));
         }
@@ -139,10 +161,9 @@ final class PythonToTypePhpConverter
             'FunctionDef' => $this->functionDefinition($node),
             'Assign' => $this->assignment($node),
             'AnnAssign' => ($node['value'] ?? null) === null
-                ? $this->unsupported($node, 'annotation-only assignments have no TypePHP runtime value')
+                ? [$this->line('// annotation-only declaration: ' . $this->safeComment((string) ($node['target']['id'] ?? '?')))]
                 : [$this->line($this->target($node['target']) . ' = ' . $this->expression($node['value']) . ';')],
-            'AugAssign' => [$this->line($this->target($node['target']) . ' ' . $this->binaryOperator($node['op'], $node)
-                . '= ' . $this->expression($node['value']) . ';')],
+            'AugAssign' => $this->augAssignment($node),
             'Expr' => $this->expressionStatement($node),
             'Return' => [$this->line('return' . (($node['value'] ?? null) === null ? '' : ' ' . $this->expression($node['value'])) . ';')],
             'If' => $this->ifStatement($node),
@@ -164,11 +185,8 @@ final class PythonToTypePhpConverter
         if ($this->indent !== 0) {
             $this->unsupported($node, 'nested functions require Python closure scope analysis');
         }
-        if (($node['decorator_list'] ?? []) !== []) {
-            $this->unsupported($node, 'function decorators are not supported yet');
-        }
         $parameters = $this->parameters($node['args'], $node);
-        $lines = [$this->line('function ' . $node['name'] . '(' . $parameters . ')'), $this->line('{')];
+        $lines = [$this->line('function ' . $this->functionName((string) $node['name']) . '(' . $parameters . ')'), $this->line('{')];
         $this->indent++;
         $locals = $this->functionLocalNames($node);
         $globals = array_values(array_diff(array_keys($this->moduleGlobals), array_keys($locals)));
@@ -183,6 +201,59 @@ final class PythonToTypePhpConverter
         return $lines;
     }
 
+    /**
+     * Python 的 main 函数与 TypePHP 入口点冲突，重命名为 main_。
+     */
+    private function functionName(string $name): string
+    {
+        return $name === 'main' ? 'main_' : $name;
+    }
+
+    /**
+     * 生成装饰器的重绑定语句（Python 自底向上应用装饰器）。
+     * 装饰结果存入同名模块变量，调用点经变量间接调用。
+     *
+     * @param array<string, mixed> $function @return list<string>
+     */
+    private function decoratorRebindings(array $function): array
+    {
+        $decorators = $function['decorator_list'] ?? [];
+        if ($decorators === []) {
+            return [];
+        }
+        $name = (string) $function['name'];
+        $lines = [];
+        foreach (array_reverse($decorators) as $decorator) {
+            $lines[] = $this->variable($name) . ' = ' . $this->decoratorCallable($decorator) . '('
+                . var_export($this->functionName($name), true) . ');';
+        }
+        return $lines;
+    }
+
+    /** @param array<string, mixed> $node */
+    private function decoratorCallable(array $node): string
+    {
+        // @dec(args)：装饰器工厂，先求值再调用其返回值
+        if (($node['_type'] ?? '') === 'Call') {
+            return $this->call($node);
+        }
+        if (($node['_type'] ?? '') === 'Name') {
+            $name = (string) $node['id'];
+            if (isset($this->importedSymbols[$name])) {
+                $symbol = $this->importedSymbols[$name];
+                return 'python\\' . str_replace('.', '\\', $symbol['module']) . '\\' . $symbol['member'];
+            }
+            if (isset($this->definedFunctions[$name])) {
+                return $this->functionName($name);
+            }
+            return $this->variable($name);
+        }
+        if (($node['_type'] ?? '') === 'Attribute') {
+            return $this->attribute($node);
+        }
+        return '(' . $this->expression($node) . ')';
+    }
+
     /** @param array<string, mixed> $arguments @param array<string, mixed> $owner */
     private function parameters(array $arguments, array $owner): string
     {
@@ -215,14 +286,63 @@ final class PythonToTypePhpConverter
     /** @param array<string, mixed> $node @return list<string> */
     private function assignment(array $node): array
     {
-        if (count($node['targets'] ?? []) !== 1) {
-            $this->unsupported($node, 'chained assignments are not supported yet');
+        $targets = $node['targets'] ?? [];
+        foreach ($targets as $target) {
+            if (in_array($target['_type'] ?? '', ['Tuple', 'List'], true)) {
+                if (count($targets) > 1) {
+                    $this->unsupported($node, 'destructuring with chained targets is not supported');
+                }
+                // a, b = x → [$a, $b] = $x->toArray();
+                return [$this->line($this->destructuringTarget($target, $node) . ' = '
+                    . $this->iterableValue($node['value']) . ';')];
+            }
+            if (count($targets) > 1 && ($target['_type'] ?? '') !== 'Name') {
+                $this->unsupported($node, 'chained assignments are only supported for plain name targets');
+            }
+        }
+        $left = implode(' = ', array_map(fn(array $target) => $this->target($target), $targets));
+        return [$this->line($left . ' = ' . $this->expression($node['value']) . ';')];
+    }
+
+    /** @param array<string, mixed> $node @param array<string, mixed> $owner */
+    private function destructuringTarget(array $node, array $owner): string
+    {
+        $parts = [];
+        foreach ($node['elts'] ?? [] as $element) {
+            $parts[] = match ($element['_type'] ?? '') {
+                'Name' => $this->variable((string) $element['id']),
+                'Attribute', 'Subscript' => $this->target($element),
+                // PHP 的 list 赋值不支持展开，嵌套元组的元素仍是 PyObject 无法直接解构
+                'Starred' => $this->unsupported($owner, 'starred destructuring is not supported'),
+                default => $this->unsupported($owner, 'nested destructuring is not supported'),
+            };
         }
-        $target = $node['targets'][0];
-        if (in_array($target['_type'] ?? '', ['Tuple', 'List'], true)) {
-            $this->unsupported($node, 'destructuring assignments are not supported yet');
+        return '[' . implode(', ', $parts) . ']';
+    }
+
+    /** @param array<string, mixed> $node */
+    private function iterableValue(array $node): string
+    {
+        $expression = $this->expression($node);
+        if (!in_array($node['_type'] ?? '', [
+            'Name', 'Attribute', 'Call', 'Subscript', 'List', 'Tuple', 'Set', 'Dict',
+        ], true)) {
+            $expression = '(' . $expression . ')';
+        }
+        return $expression . '->toArray()';
+    }
+
+    /** @param array<string, mixed> $node @return list<string> */
+    private function augAssignment(array $node): array
+    {
+        $target = $this->target($node['target']);
+        $operator = $node['op']['_type'] ?? '';
+        // PHP 没有 //= 与 @=，展开为对应的运算符函数调用
+        if ($operator === 'FloorDiv' || $operator === 'MatMult') {
+            $function = $operator === 'FloorDiv' ? 'python\\operator\\floordiv' : 'python\\operator\\matmul';
+            return [$this->line($target . ' = ' . $function . '(' . $target . ', ' . $this->expression($node['value']) . ');')];
         }
-        return [$this->line($this->target($target) . ' = ' . $this->expression($node['value']) . ';')];
+        return [$this->line($target . ' ' . $this->binaryOperator($node['op'], $node) . '= ' . $this->expression($node['value']) . ';')];
     }
 
     /** @param array<string, mixed> $node @return list<string> */
@@ -408,11 +528,25 @@ final class PythonToTypePhpConverter
     /** @param array<string, mixed> $node @return list<string> */
     private function deleteStatement(array $node): array
     {
-        $lines = [];
-        foreach ($node['targets'] ?? [] as $target) {
+        $targets = [];
+        $walk = function (array $target) use (&$walk, &$targets, $node): void {
+            // del (a, b) / del [a, b] 逐项展开
+            if (in_array($target['_type'] ?? '', ['Tuple', 'List'], true)) {
+                foreach ($target['elts'] ?? [] as $element) {
+                    $walk($element);
+                }
+                return;
+            }
             if (!in_array($target['_type'] ?? '', ['Name', 'Attribute', 'Subscript'], true)) {
                 $this->unsupported($node, 'unsupported del target');
             }
+            $targets[] = $target;
+        };
+        foreach ($node['targets'] ?? [] as $target) {
+            $walk($target);
+        }
+        $lines = [];
+        foreach ($targets as $target) {
             $lines[] = $this->line('unset(' . $this->target($target) . ');');
         }
         return $lines;
@@ -439,6 +573,7 @@ final class PythonToTypePhpConverter
             'Lambda' => 'fn (' . $this->parameters($node['args'], $node) . ') => ' . $this->expression($node['body']),
             'JoinedStr' => $this->joinedString($node),
             'Starred' => '...' . $this->expression($node['value']),
+            'NamedExpr' => '(' . $this->variable((string) $node['target']['id']) . ' = ' . $this->expression($node['value']) . ')',
             default => $this->unsupported($node),
         };
     }
@@ -449,11 +584,14 @@ final class PythonToTypePhpConverter
         $function = $node['func'];
         if (($function['_type'] ?? '') === 'Name') {
             $name = (string) $function['id'];
-            if (isset($this->importedSymbols[$name])) {
+            if (isset($this->decoratedFunctions[$name])) {
+                // 装饰结果绑定在同名变量上，必须经变量间接调用
+                $callable = $this->variable($name);
+            } elseif (isset($this->importedSymbols[$name])) {
                 $symbol = $this->importedSymbols[$name];
                 $callable = 'python\\' . str_replace('.', '\\', $symbol['module']) . '\\' . $symbol['member'];
             } elseif (isset($this->definedFunctions[$name])) {
-                $callable = $name;
+                $callable = $this->functionName($name);
             } elseif ($this->isPythonBuiltin($name)) {
                 $callable = 'python\\' . $name;
             } else {