#125 Move node_id_vector from graph_interface.hpp to a separate header

It allow to leave it in detail namespace while all other graph_interface.hpp content will be moved into core namespace

include/ureact/detail/graph_impl.inl

@@ -19,6 +19,7 @@
 #include <ureact/detail/defines.hpp>
 #include <ureact/detail/graph_impl.hpp>
 #include <ureact/detail/graph_interface.hpp>
+#include <ureact/detail/node_id_vector.hpp>
 #include <ureact/detail/slot_map.hpp>
 
 UREACT_BEGIN_NAMESPACE

include/ureact/detail/graph_interface.hpp

@@ -11,7 +11,6 @@
 #define UREACT_DETAIL_GRAPH_INTERFACE_HPP
 
 #include <cstddef>
-#include <vector>
 
 #include <ureact/detail/defines.hpp>
 
@@ -58,25 +57,6 @@ class node_id
     value_type m_id = -1;
 };
 
-class node_id_vector
-{
-public:
-    using value_type = node_id;
-    using container_type = std::vector<value_type>;
-    using iterator = container_type::iterator;
-
-    void add( node_id id );
-    void remove( node_id id );
-    void clear();
-    UREACT_WARN_UNUSED_RESULT bool empty() const;
-
-    UREACT_WARN_UNUSED_RESULT iterator begin();
-    UREACT_WARN_UNUSED_RESULT iterator end();
-
-private:
-    container_type m_data;
-};
-
 enum class update_result
 {
     unchanged,
@@ -106,8 +86,4 @@ struct observer_interface
 
 UREACT_END_NAMESPACE
 
-#if UREACT_HEADER_ONLY
-#    include <ureact/detail/graph_interface.inl>
-#endif
-
 #endif //UREACT_DETAIL_GRAPH_INTERFACE_HPP

include/ureact/detail/node_base.hpp

@@ -17,6 +17,7 @@
 #include <ureact/context.hpp>
 #include <ureact/detail/graph_impl.hpp>
 #include <ureact/detail/graph_interface.hpp>
+#include <ureact/detail/node_id_vector.hpp>
 
 UREACT_BEGIN_NAMESPACE
 

include/ureact/detail/node_id_vector.hpp

@@ -0,0 +1,50 @@
+//
+//         Copyright (C) 2014-2017 Sebastian Jeckel.
+//         Copyright (C) 2020-2023 Krylov Yaroslav.
+//
+// Distributed under the Boost Software License, Version 1.0.
+//    (See accompanying file LICENSE_1_0.txt or copy at
+//          http://www.boost.org/LICENSE_1_0.txt)
+//
+
+#ifndef UREACT_DETAIL_NODE_ID_VECTOR_HPP
+#define UREACT_DETAIL_NODE_ID_VECTOR_HPP
+
+#include <vector>
+
+#include <ureact/detail/defines.hpp>
+#include <ureact/detail/graph_interface.hpp>
+
+UREACT_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+class node_id_vector
+{
+public:
+    using value_type = node_id;
+    using container_type = std::vector<value_type>;
+    using iterator = container_type::iterator;
+
+    void add( node_id id );
+    void remove( node_id id );
+    void clear();
+    UREACT_WARN_UNUSED_RESULT bool empty() const;
+
+    UREACT_WARN_UNUSED_RESULT iterator begin();
+    UREACT_WARN_UNUSED_RESULT iterator end();
+
+private:
+    container_type m_data;
+};
+
+} // namespace detail
+
+UREACT_END_NAMESPACE
+
+#if UREACT_HEADER_ONLY
+#    include <ureact/detail/node_id_vector.inl>
+#endif
+
+#endif //UREACT_DETAIL_NODE_ID_VECTOR_HPP

include/ureact/detail/graph_interface.inl → include/ureact/detail/node_id_vector.inl

@@ -7,14 +7,14 @@
 //          http://www.boost.org/LICENSE_1_0.txt)
 //
 
-#ifndef UREACT_DETAIL_GRAPH_INTERFACE_INL
-#define UREACT_DETAIL_GRAPH_INTERFACE_INL
+#ifndef UREACT_DETAIL_NODE_ID_VECTOR_INL
+#define UREACT_DETAIL_NODE_ID_VECTOR_INL
 
 #include <cassert>
 
 #include <ureact/detail/algorithm.hpp>
 #include <ureact/detail/defines.hpp>
-#include <ureact/detail/graph_interface.hpp>
+#include <ureact/detail/node_id_vector.hpp>
 
 UREACT_BEGIN_NAMESPACE
 
@@ -66,4 +66,4 @@ UREACT_FUNC node_id_vector::iterator node_id_vector::end()
 
 UREACT_END_NAMESPACE
 
-#endif //UREACT_DETAIL_GRAPH_INTERFACE_INL
+#endif //UREACT_DETAIL_NODE_ID_VECTOR_INL