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// -*- tab-width: 4; indent-tabs-mode: nil; c-basic-offset: 2 -*-
// vi: set et ts=4 sw=2 sts=2:
// SPDX-FileCopyrightInfo: Copyright © DUNE Project contributors, see file LICENSE.md in module root
// SPDX-License-Identifier: LicenseRef-GPL-2.0-only-with-DUNE-exception
#include <tuple>
#include <dune/common/overloadset.hh>
#include <dune/common/hybridutilities.hh>
#include <dune/common/test/testsuite.hh>
struct Bar {
int bar() const { return 0; }
};
int main()
{
Dune::TestSuite test;
{
auto foo = Dune::overload(
[](double /*i*/) { return 0; },
[](int /*i*/) { return 1; },
[](long /*i*/) { return 2; });
test.check(foo(3.14) == 0)
<< "incorrect overload selected from OverloadSet";
test.check(foo(int(42)) == 1)
<< "incorrect overload selected from OverloadSet";
test.check(foo(long(42)) == 2)
<< "incorrect overload selected from OverloadSet";
}
{
auto foo = Dune::orderedOverload(
[](double /*i*/) { return 0; },
[](int /*i*/) { return 1; },
[](long /*i*/) { return 2; });
test.check(foo(3.14) == 0)
<< "incorrect overload selected from OverloadSet";
test.check(foo(int(42)) == 0)
<< "incorrect overload selected from OverloadSet";
test.check(foo(long(42)) == 0)
<< "incorrect overload selected from OverloadSet";
}
{
auto foo = Dune::overload(
[](const int& /*i*/) { return 0; },
[](int&& /*i*/) { return 1; });
int i = 0;
test.check(foo(long(42)) == 1)
<< "incorrect overload selected from OverloadSet";
test.check(foo(int(42)) == 1)
<< "incorrect overload selected from OverloadSet";
test.check(foo(i) == 0)
<< "incorrect overload selected from OverloadSet";
}
{
auto foo = Dune::orderedOverload(
[](const int& /*i*/) { return 0; },
[](int&& /*i*/) { return 1; });
int i = 0;
test.check(foo(long(42)) == 0)
<< "incorrect overload selected from OverloadSet";
test.check(foo(int(42)) == 0)
<< "incorrect overload selected from OverloadSet";
test.check(foo(i) == 0)
<< "incorrect overload selected from OverloadSet";
}
{
auto t = std::make_tuple(42, "foo", 3.14);
auto typeToName = Dune::overload(
[](int) { return "int"; },
[](long) { return "long"; },
[](std::string) { return "string"; },
[](float) { return "float"; },
[](double) { return "double"; });
std::string tupleTypes;
Dune::Hybrid::forEach(t, [&](auto&& ti) {
tupleTypes += typeToName(ti);
});
test.check(tupleTypes == "intstringdouble")
<< "traversal of tuple called incorrect overloads";
}
{
// Check if templated and non-templed overloads work
// nicely together.
auto f = Dune::overload(
[](const int& t) { (void) t;},
[](const auto& t) { t.bar();});
f(0);
}
return test.exit();
}
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