1 files changed, 38 insertions, 0 deletions
diff --git a/starts/meaning-vm/level-0/concept.hpp b/starts/meaning-vm/level-0/concept.hpp
new file mode 100644
index 0000000..dc3221b
--- /dev/null
+++ b/starts/meaning-vm/level-0/concept.hpp
@@ -0,0 +1,38 @@
+#pragma once
+
+#include "common.hpp"
+#include "ref.hpp"
+
+#include <map>
+#include <vector>
+
+namespace intellect {
+namespace level0 {
+
+struct concept
+{
+	// a concept is made of concept-typed links to other concepts
+	std::multimap<ref,ref> links;
+	using array = std::vector<ref>;
+
+	ref id();
+
+	void link(ref const & type, ref const & target);
+	void unlink(ref const & type, ref const & target);
+	void unlink(ref const & type);
+
+	bool linked(ref const & type) const;
+	bool linked(ref const & type, ref const & target) const;
+
+	array getAll(ref const & type) const;
+
+	// get and set enforce that only 1 link of a given type is present
+	ref get(ref const & type) const;
+	void set(ref const & type, ref const & target);
+
+	template <typename T>
+	vref<T> vget(ref const & type) const { return get(type); }
+};
+
+}
+}