Assertion facility.

assertion.h

@@ -0,0 +1,30 @@
+static_assert( __cplusplus > 2020'99 );
+
+#pragma once
+
+#include <Alepha/Alepha.h>
+
+#include <Alepha/Exception.h>
+
+namespace Alepha::Hydrogen  ::detail::  assertion_m
+{
+	inline namespace exports
+	{
+		class ProgrammerExpectationViolation : public virtual Violation {};
+
+		inline void
+		assertion( const bool b )
+		{
+			if( not b )
+			{
+				throw build_exception< ProgrammerExpectationViolation >( 
+						"Expectation violated." );
+			}
+		}
+	}
+}
+
+namespace Alepha::Hydrogen::inline exports::inline assertion_m
+{
+	using namespace detail::assertion_m::exports;
+}