166 lines
3.5 KiB
C++
166 lines
3.5 KiB
C++
/*=============================================================================
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This file is part of FLINT.
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FLINT is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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FLINT is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with FLINT; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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=============================================================================*/
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/******************************************************************************
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Copyright (C) 2013 Tom Bachmann
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******************************************************************************/
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// XXX NOTE: the forwarding code was never completed, and neither was this
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// test file.
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#include <iostream>
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#include <sstream>
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#include "flintxx/forwarding.h"
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#include "flintxx/test/myint.h"
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#include "flintxx/test/helpers.h"
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using namespace flint;
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template<class Operation, class Data>
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class forwarded_expression
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: public expression<derived_wrapper<forwarded_expression>, Operation, Data>
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{
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public:
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forwarded_expression() {};
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template<class T>
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explicit forwarded_expression(const T& t)
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: expression<derived_wrapper< ::forwarded_expression>,
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Operation, Data>(t) {}
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template<class T>
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forwarded_expression& operator=(const T& t)
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{
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this->set(t);
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return *this;
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}
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protected:
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explicit forwarded_expression(const Data& d)
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: expression<derived_wrapper< ::forwarded_expression>,
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Operation, Data>(d) {}
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template<class D, class O, class Da>
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friend class ::flint::expression;
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};
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struct hide_myint
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{
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myint i;
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template<class T>
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hide_myint(const T& t) : i(t) {}
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hide_myint() {}
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};
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typedef forwarded_expression<operations::immediate, hide_myint> fwint;
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namespace flint {
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namespace forwarding {
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template<>
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struct enable<fwint>
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: mp::true_
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{
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typedef myint underlying_t;
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static const myint& get_underlying(const fwint& fwd)
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{
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return fwd._data().i;
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}
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static myint& get_underlying(fwint& fwd)
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{
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return fwd._data().i;
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}
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};
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}
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}
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void
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test_print()
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{
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fwint fwd(4);
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std::ostringstream oss;
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oss << fwd;
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tassert(oss.str() == "4");
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}
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void
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test_assignment()
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{
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fwint f1, f2(4);
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f1 = WORD(3); // TODO understand why "3" seems to lead to circular dependency
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tassert(f1 == 3);
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f1 = f2;
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tassert(f1 == 4);
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}
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void
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test_equals()
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{
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fwint f1(4), f2(5);
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myint m1(4);
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tassert(f1 == f1);
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tassert(f1 != f2);
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tassert(f1 == 4);
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tassert(5 != f1);
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tassert(f1 == m1);
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tassert(m1 != f2);
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}
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void
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test_conversion()
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{
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fwint a(4);
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tassert(typed_equals(a.to<int>(), 4));
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}
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void
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test_evaluation()
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{
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fwint a(4);
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myint b(5);
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tassert(typed_equals((a + a).evaluate(), myint(8)));
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tassert(a + b == 9);
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tassert(a + 6 == 10);
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tassert((a + 6) + b == 15);
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}
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int
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main()
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{
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std::cout << "forwarding....";
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test_print();
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test_assignment();
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// TODO test cmp
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test_equals();
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test_conversion();
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test_evaluation();
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std::cout << "PASS" << std::endl;
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return 0;
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}
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