feat(parser): add runtime method scope detection for dynamic calls

- Introduced runtimeMethodRequiresDynamicScope to check method visibility
- Integrated reflection-based method modifier checking
- Updated nullsafe access trait to pass expression objects for scope analysis
- Added test case for nullsafe method calls preserving private visibility
- Refactored method call processing to handle dynamic scope requirements

src/Parser/MethodCallTrait.php

@@ -16,9 +16,46 @@ use PhpParser\Node\Expr\CallLike;
 use TypePhp\Exception\DynamicCall;
 use TypePhp\Exception\PlaceHolder;
 use TypePhp\Generator\Symbol;
+use TypePhp\Resolver\Reflection;
 
 trait MethodCallTrait
 {
+    protected function runtimeMethodRequiresDynamicScope(
+        string $class,
+        string $method,
+        bool $magicMethod = false,
+    ): bool {
+        if ($method === '' || $magicMethod) {
+            return true;
+        }
+
+        if ($class !== '') {
+            $flags = $this->getMethodFlags($class, $method);
+            if ($flags !== 0) {
+                return !($flags & Modifiers::PUBLIC);
+            }
+
+            $modifiers = Reflection::getClassMethodModifiers($class, $method);
+            if ($modifiers !== null) {
+                return !($modifiers & \ReflectionMethod::IS_PUBLIC);
+            }
+        }
+
+        // Late-bound receivers such as `new static()` do not have an exact
+        // class in the local type map. A matching current-class method still
+        // carries the lexical visibility rules of that class.
+        if ($this->classDef !== null) {
+            $flags = $this->getMethodFlags($this->getFullClassName(), $method);
+            if ($flags !== 0) {
+                return !($flags & Modifiers::PUBLIC);
+            }
+        }
+
+        // A named method with no non-public declaration is resolved as a
+        // normal public call and must not change an unrelated Zend frame.
+        return false;
+    }
+
     protected function isOverrideMethod(string $fullMethodName): bool
     {
         $fullMethodNameLower = strtolower($fullMethodName);
@@ -488,13 +525,18 @@ trait MethodCallTrait
             $funcName = '';
         }
 
-        $requiresDynamicScope = true;
-        if ($class && $funcName && !$magicMethod && $this->isInternalClass($class)) {
-            $methodPtr = $this->getMethodPtr($class, $funcName);
-            // Calling a resolved public internal method does not require
-            // callback visibility scope. A small set of invoker methods is
-            // intentionally exempt because it executes another PHP method.
-            $requiresDynamicScope = $this->internalMethodMayInvokeCallback($class, $funcName);
+        $requiresDynamicScope = $this->runtimeMethodRequiresDynamicScope($class, $funcName, $magicMethod);
+        if ($class && $funcName && !$magicMethod) {
+            if ($this->isInternalClass($class)) {
+                $methodPtr = $this->getMethodPtr($class, $funcName);
+                // A small set of internal invokers synchronously executes a
+                // callback and therefore still needs the caller's scope.
+                if ($this->internalMethodMayInvokeCallback($class, $funcName)) {
+                    $requiresDynamicScope = true;
+                }
+            } else {
+                $methodPtr = $method;
+            }
         } else {
             $methodPtr = $method;
         }

src/Parser/NullsafeAccessTrait.php

@@ -46,13 +46,13 @@ trait NullsafeAccessTrait
                 $list[] = ['property', $this->identifierToStr($expr->name, literal: true), $expr, true];
                 $expr = $expr->var;
             } elseif ($expr instanceof Expr\NullsafeMethodCall) {
-                $list[] = ['method', $this->identifierToStr($expr->name, literal: true), $expr->args, true];
+                $list[] = ['method', $this->identifierToStr($expr->name, literal: true), $expr->args, true, $expr];
                 $expr = $expr->var;
             } elseif ($expr instanceof Expr\PropertyFetch) {
                 $list[] = ['property', $this->identifierToStr($expr->name, literal: true), $expr, false];
                 $expr = $expr->var;
             } elseif ($expr instanceof Expr\MethodCall) {
-                $list[] = ['method', $this->identifierToStr($expr->name, literal: true), $expr->args, false];
+                $list[] = ['method', $this->identifierToStr($expr->name, literal: true), $expr->args, false, $expr];
                 $expr = $expr->var;
             } else {
                 if ($this->isVarExpr($expr)) {
@@ -87,7 +87,13 @@ trait NullsafeAccessTrait
                 $update = $this->escapeAttrMode($this->isPropertyFetchUpdate($item[2]));
                 $code .= $this->getIndent() . "{$tmpVar} = {$object}.attr({$item[1]}, {$update});";
             } else {
-                $this->markRuntimeObjectMethodCall();
+                $methodName = $this->isNamedMethod($item[4]->name)
+                    ? $this->parseIdentifier($item[4]->name)
+                    : '';
+                $receiverClass = $this->detectClassOfExpr($item[4]->var);
+                if ($this->runtimeMethodRequiresDynamicScope($receiverClass, $methodName)) {
+                    $this->markRuntimeObjectMethodCall();
+                }
                 $beforeStmtCount = count($this->context->beforeStmtLines);
                 $afterStmtCount = count($this->context->afterStmtLines);
                 $args = $this->parseCallArgs($item[2]);

tests/compiler/nullsafe/nullsafe-private-scope.phpt

@@ -0,0 +1,29 @@
+--TEST--
+Nullsafe method calls preserve private visibility when required
+--FILE--
+<?php
+
+final class NullsafePrivateScope
+{
+    private function value(): string
+    {
+        return 'private-ok';
+    }
+
+    public function read(?self $object): ?string
+    {
+        return $object?->value();
+    }
+}
+
+function main(): void
+{
+    $object = new NullsafePrivateScope();
+    var_dump($object->read($object));
+    var_dump($object->read(null));
+}
+
+?>
+--EXPECT--
+string(10) "private-ok"
+NULL