From 8eb15af7be3ced92425ea2bac613bd7491dac88c Mon Sep 17 00:00:00 2001
From: BlackMATov <blackmat@mail.ru>
Date: Fri, 26 Nov 2021 08:18:18 +0700
Subject: [PATCH] class_type create function

---
 headers/meta.hpp/meta_types.hpp            |  6 ++++++
 headers/meta.hpp/meta_types/class_type.hpp | 15 +++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/headers/meta.hpp/meta_types.hpp b/headers/meta.hpp/meta_types.hpp
index 45546aa..d4ba9ac 100644
--- a/headers/meta.hpp/meta_types.hpp
+++ b/headers/meta.hpp/meta_types.hpp
@@ -201,6 +201,12 @@ namespace meta_hpp
         const method_map& get_methods() const noexcept;
         const variable_map& get_variables() const noexcept;
 
+        template < typename... Args >
+        std::optional<value> create(Args&&... args) const;
+
+        template < typename... Args >
+        std::optional<value> operator()(Args&&... args) const;
+
         template < detail::class_kind Derived >
         bool is_base_of() const noexcept;
         bool is_base_of(const class_type& derived) const noexcept;
diff --git a/headers/meta.hpp/meta_types/class_type.hpp b/headers/meta.hpp/meta_types/class_type.hpp
index 62118b8..5d88614 100644
--- a/headers/meta.hpp/meta_types/class_type.hpp
+++ b/headers/meta.hpp/meta_types/class_type.hpp
@@ -91,6 +91,21 @@ namespace meta_hpp
         return data_->variables;
     }
 
+    template < typename... Args >
+    std::optional<value> class_type::create(Args&&... args) const {
+        for ( auto&& ctor : data_->ctors ) {
+            if ( ctor.second.is_invocable_with<Args...>() ) {
+                return ctor.second.invoke(std::forward<Args>(args)...);
+            }
+        }
+        return std::nullopt;
+    }
+
+    template < typename... Args >
+    std::optional<value> class_type::operator()(Args&&... args) const {
+        return create(std::forward<Args>(args)...);
+    }
+
     template < detail::class_kind Derived >
     bool class_type::is_base_of() const noexcept {
         return is_base_of(resolve_type<Derived>());