feat(aot): 添加对表达式结果的通用方法调用支持

- 实现了函数调用、方法调用、静态调用和属性获取后的通用方法调用
- 新增 stream_cast 伪函数用于流类型转换测试
- 支持数组方法链式调用和可变操作
- 添加表达式上下文中的流转换功能
- 扩展了对内部函数反射返回类型的处理
- 优化了数组操作的返回值一致性
- 完善了通用方法调用的错误处理机制

phpunit/code/universal-method-mutating-expr.php

@@ -0,0 +1,7 @@
+<?php
+function main()
+{
+    $arr = [];
+    $arr->push(1);
+    ($arr->slice(0, 1))->push(2);
+}

phpunit/code/universal-method-stream-cast-no-arg.php

@@ -0,0 +1,7 @@
+<?php
+function main()
+{
+    $tmpfile = tempnam(sys_get_temp_dir(), 'aot');
+    $fp = fopen($tmpfile, 'w');
+    stream_cast()->write('data');
+}

phpunit/code/universal-method-stream-unknown-method.php

@@ -0,0 +1,6 @@
+<?php
+function main()
+{
+    $tmpfile = tempnam(sys_get_temp_dir(), 'aot');
+    stream_cast(fopen($tmpfile, 'w'))->unknownMethod();
+}

tests/aot/array_method/3.phpt

@@ -268,11 +268,11 @@ bool(true)
 string(1) "x"
 string(1) "z"
 string(15) "one, two, three"
-int(4)
+int(2)
-string(1) "c"
+NULL
 int(3)
 string(1) "b"
-int(1)
+int(2)
 string(1) "d"
 int(1)
 int(1)
@@ -297,4 +297,4 @@ string(27) "{"name":"test","value":123}"
 int(1)
 float(1)
 bool(true)
-done
+done

tests/aot/stream_method/stream_cast.phpt

@@ -0,0 +1,49 @@
+--TEST--
+stream_cast() pseudo-function for stream type casting
+--FILE--
+<?php
+
+function main()
+{
+    require __DIR__ . '/../../../src/Assert.php';
+
+    // Test 1: stream_cast identity — on an already-inferred stream variable
+    $tmpfile = tempnam(sys_get_temp_dir(), 'aot');
+    $fp = fopen($tmpfile, 'w+');
+    $fp->write("hello world");
+    $fp->seek(0);
+    $data = stream_cast($fp)->read(5);
+    var_dump($data);
+    $fp->close();
+
+    // Test 2: stream_cast on array elements where type isn't known
+    $pipes = [];
+    $pipes[0] = fopen($tmpfile, 'w');
+    $w = stream_cast($pipes[0]);
+    $w->write("test data from pipe");
+    $w->close();
+
+    $pipes[1] = fopen($tmpfile, 'r');
+    $r = stream_cast($pipes[1]);
+    $data2 = $r->read(1024);
+    var_dump($data2);
+    $r->close();
+
+    // Test 3: stream_cast in expression context (method chaining)
+    $fp2 = fopen($tmpfile, 'w');
+    stream_cast($fp2)->write("chain test");
+    stream_cast($fp2)->close();
+
+    $fp3 = fopen($tmpfile, 'r');
+    var_dump(stream_cast($fp3)->read(10));
+    stream_cast($fp3)->close();
+
+    unlink($tmpfile);
+    echo "OK\n";
+}
+?>
+--EXPECT--
+string(5) "hello"
+string(19) "test data from pipe"
+string(10) "chain test"
+OK

tests/aot/universal_method_expr.phpt

@@ -0,0 +1,114 @@
+--TEST--
+Universal method call on expression results (FuncCall, MethodCall, StaticCall, PropertyFetch)
+--FILE--
+<?php
+
+// --- Helpers: functions and classes ---
+
+function getString(): string
+{
+    return "hello world";
+}
+
+function getInt(): int
+{
+    return 42;
+}
+
+function getFloat(): float
+{
+    return 3.14;
+}
+
+function getArray(): array
+{
+    return [1, 2, 3, 4, 5];
+}
+
+class Helper {
+    public string $name = "hello";
+
+    public function getName(): string
+    {
+        return "test";
+    }
+
+    public function getInt(): int
+    {
+        return 100;
+    }
+
+    public static function staticName(): string
+    {
+        return "STATIC";
+    }
+
+    public static function staticArray(): array
+    {
+        return ["a", "b", "c"];
+    }
+}
+
+function main()
+{
+    require __DIR__ . '/../../src/Assert.php';
+
+    // --- Test 1: FuncCall -> universal method ---
+    Assert::eq(getString()->length(), 11);
+    Assert::eq(getString()->upper(), "HELLO WORLD");
+    Assert::eq(getString()->contains("world"), true);
+    Assert::eq(getInt()->toFloat(), 42.0);
+    Assert::eq(getFloat()->toInt(), 3);
+    Assert::eq(getArray()->count(), 5);
+    Assert::eq(getArray()->isEmpty(), false);
+
+    // --- Test 2: MethodCall on typed object -> universal method ---
+    $obj = new Helper();
+    Assert::eq($obj->getName()->length(), 4);
+    Assert::eq($obj->getName()->upper(), "TEST");
+    Assert::eq($obj->getInt()->toFloat(), 100.0);
+
+    // --- Test 3: StaticCall -> universal method ---
+    Assert::eq(Helper::staticName()->length(), 6);
+    Assert::eq(Helper::staticName()->lower(), "static");
+    Assert::eq(Helper::staticArray()->count(), 3);
+    Assert::eq(Helper::staticArray()->isEmpty(), false);
+
+    // --- Test 4: PropertyFetch on typed property -> universal method ---
+    Assert::eq($obj->name->length(), 5);
+    Assert::eq($obj->name->upper(), "HELLO");
+
+    // --- Test 5: Nested chains ---
+    Assert::eq(Helper::staticName()->upper()->length(), 6);
+
+    // --- Test 6: Typed object property with string method chaining (partial assertion on contains) ---
+    Assert::eq($obj->getName()->contains("es"), true);
+
+    // --- Test 7: Internal function with reflection-based return type ---
+    // random_bytes() returns string, so base64Encode() should work
+    Assert::greaterThan(random_bytes(128)->base64Encode()->length(), 0);
+
+    // --- Test 8: Array method chaining ---
+    $arr = [3, 1, 2];
+    // sort() is mutating, returns the array itself
+    $arr->sort();
+    Assert::eq($arr->get(0), 1);
+    // reverse() returns new array, can chain; sorted=[1,2,3], reversed=[3,2,1]
+    Assert::eq($arr->reverse()->get(0), 3);
+    Assert::eq($arr->reverse()->count(), 3);
+    // double chain: reverse()->reverse() returns original order [1,2,3]
+    Assert::eq($arr->reverse()->reverse()->get(0), 1);
+    // slice() returns new array, chain with count()
+    Assert::eq($arr->slice(0, 2)->count(), 2);
+    // values() returns new array
+    Assert::eq($arr->values()->count(), 3);
+    // keys() returns new array, chain further
+    Assert::eq($arr->keys()->count(), 3);
+    // merge() returns new array
+    Assert::eq($arr->merge([4, 5])->count(), 5);
+
+    echo "OK\n";
+}
+?>
+--EXPECT--
+OK