Ichthyostega
535e372827
`PolymorphicValue` incurs some quite confusing requirements due to the clumsy way how the instance handling and copy support must be injected. As pointed out in #1197, with modern C++, this could be much simplified. An overhaul of `PolymorphicValue` seems urgent thus -- in the meanwhile we need to introduce more flexibiltiy with base-class template parameters, so that we can inject the CopySupport interface at usage site of the complete implementation class chain. Furthermore, the size of the VTable is added automatically to the storage requirements in `PolymorphicValue`, so we must subtract it when specifying the payload size by a compile-time expression based on `sizeof(ParamData<double>)` With these tweaks, we can now keep the limit of 4 «slots» (32 bytes) and still reserve 64bit for ID and type flags.
105 lines
2.1 KiB
C++
105 lines
2.1 KiB
C++
/*
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Parameter(Test) - verify generic parameter values
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Copyright (C)
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2026, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file parameter-test.cpp
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** unit test \ref Parameter_test
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*/
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#include "test/run.hpp"
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//#include "test/test-helper.hpp"
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#include "lib/par/parameter.hpp"
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//#include "lib/format-cout.hpp"
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#include "test/diagnostic-output.hpp"/////////////TODO
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//#include <utility>
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//#include <string>
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//#include <vector>
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//using std::string;
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//using std::vector;
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//using std::swap;
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namespace lib {
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namespace par {
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namespace test{
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// using lumiera::error::LUMIERA_ERROR_LOGIC;
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namespace {//Test fixture....
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class Thing
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{ };
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template<typename X>
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struct Some
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{
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X x;
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};
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typedef Some<Thing> SomeThing;
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}//(End)Test fixture
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/**************************************************************************//**
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* @test cover properties of generic parameter containers.
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*/
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class Parameter_test : public Test
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{
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virtual void
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run (Arg)
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{
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simpleUsage();
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verify_typeMarker();
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}
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void
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simpleUsage()
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{
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CHECK (sizeof(Parameter) <= 4 * sizeof(void*));
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Parameter par = Parameter::forType<int>().build();
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CHECK (0 == par.getVal<int>());
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par.setVal (12.3);
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CHECK (12 == par.getVal<int>());
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CHECK (12u == par.getVal<uint64_t>());
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CHECK (12.0 == par.getVal<double>());
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CHECK (true == par.getVal<bool>());
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}
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void
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verify_typeMarker()
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{
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}
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};
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/** Register this test class... */
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LAUNCHER (Parameter_test, "unit lib");
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}}} // namespace lib::par::test
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