Add support of variables in native type printer

Author: Kirill Nesmeyanov

src/NativeTypePrinter.php

@@ -4,6 +4,8 @@
 
 namespace TypeLang\Printer;
 
+use TypeLang\Parser\Node\Literal\LiteralNode;
+use TypeLang\Parser\Node\Literal\VariableLiteralNode;
 use TypeLang\Parser\Node\Stmt\CallableTypeNode;
 use TypeLang\Parser\Node\Stmt\ClassConstMaskNode;
 use TypeLang\Parser\Node\Stmt\ClassConstNode;
@@ -189,13 +191,13 @@ protected function printCondition(Condition $node): string
     #[\Override]
     protected function printClassConstMaskNode(ClassConstMaskNode $node): string
     {
-        return 'int';
+        return 'mixed';
     }
 
     #[\Override]
     protected function printConstMaskNode(ConstMaskNode $node): string
     {
-        return 'int';
+        return 'mixed';
     }
 
     #[\Override]
@@ -251,4 +253,18 @@ protected function printNamedTypeNode(NamedTypeNode $node): string
     {
         return $this->getTypeName($node->name->toString());
     }
+
+    #[\Override]
+    protected function printLiteralNode(LiteralNode $node): string
+    {
+        if ($node instanceof VariableLiteralNode) {
+            if ($node->getValue() === 'this') {
+                return 'self';
+            }
+
+            return 'mixed';
+        }
+
+        return parent::printLiteralNode($node);
+    }
 }