#128 Extract react_graph related definitions in graph_impl.inl

YarikTH · Aug 26, 2023 · 7463e7d · 7463e7d
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diff --git a/include/ureact/detail/graph_impl.hpp b/include/ureact/detail/graph_impl.hpp
@@ -0,0 +1,99 @@
+//
+//         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_GRAPH_IMPL_HPP
+#define UREACT_DETAIL_GRAPH_IMPL_HPP
+
+#include <memory>
+
+#include <ureact/detail/defines.hpp>
+#include <ureact/detail/graph_interface.hpp>
+
+UREACT_BEGIN_NAMESPACE
+
+namespace detail
+{
+
+#if !defined( NDEBUG )
+struct callback_sanitizer
+{
+    virtual ~callback_sanitizer() = default;
+
+    /// Return if external callback is in progress
+    UREACT_WARN_UNUSED_RESULT virtual bool is_locked() const = 0;
+
+    /// Marks begin of an external callback
+    virtual void begin_external_callback() = 0;
+
+    /// Marks end of an external callback
+    virtual void end_external_callback() = 0;
+
+    /// Marks a place where an external callback is called
+    struct guard
+    {
+        callback_sanitizer& self;
+
+        explicit guard( callback_sanitizer& self )
+            : self( self )
+        {
+            self.begin_external_callback();
+        }
+
+        ~guard()
+        {
+            self.end_external_callback();
+        }
+
+        UREACT_MAKE_NONCOPYABLE( guard );
+        UREACT_MAKE_NONMOVABLE( guard );
+    };
+};
+#    define UREACT_CALLBACK_GUARD( _SELF_ ) callback_sanitizer::guard _( _SELF_ )
+#else
+#    define UREACT_CALLBACK_GUARD( _SELF_ )                                                        \
+        do                                                                                         \
+        {                                                                                          \
+        } while( false )
+#endif
+
+struct react_graph
+#if !defined( NDEBUG )
+    : public callback_sanitizer
+#endif
+{
+    virtual ~react_graph() = default;
+
+    virtual node_id register_node() = 0;
+    virtual void register_node_ptr(
+        node_id nodeId, const std::weak_ptr<reactive_node_interface>& nodePtr )
+        = 0;
+    virtual void unregister_node( node_id nodeId ) = 0;
+
+    virtual void attach_node( node_id nodeId, node_id parentId ) = 0;
+    virtual void detach_node( node_id nodeId, node_id parentId ) = 0;
+
+    virtual void push_input( node_id nodeId ) = 0;
+
+    virtual void start_transaction() = 0;
+    virtual void finish_transaction() = 0;
+
+    [[nodiscard]] virtual bool is_propagation_in_progress() const = 0;
+};
+
+std::shared_ptr<react_graph> make_react_graph();
+
+} // namespace detail
+
+UREACT_END_NAMESPACE
+
+#if UREACT_HEADER_ONLY
+#    include <ureact/detail/graph_impl.inl>
+#endif
+
+#endif // UREACT_DETAIL_GRAPH_IMPL_HPP