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// Copyright (C) 2008-2018 Lorenzo Caminiti
// Distributed under the Boost Software License, Version 1.0 (see accompanying
// file LICENSE_1_0.txt or a copy at http://www.boost.org/LICENSE_1_0.txt).
// See: http://www.boost.org/doc/libs/release/libs/contract/doc/html/index.html
// Test old values of non-copyable types (using macro interface).
#include "if_copyable.hpp"
#include "../detail/unprotected_commas.hpp"
#include <boost/contract_macro.hpp>
#include <boost/noncopyable.hpp>
#include <boost/detail/lightweight_test.hpp>
unsigned old_checks;
template<typename T>
struct b {
virtual void next(T& x, boost::contract::virtual_* v = 0) {
BOOST_CONTRACT_OLD_PTR_IF_COPYABLE(
typename boost::contract::test::detail::unprotected_commas<T, void,
void>::type1
)(
(boost::contract::test::detail::unprotected_commas<void, void,
void>::same(v)),
old_x,
(boost::contract::test::detail::unprotected_commas<void, void,
void>::same(x))
);
BOOST_CONTRACT_PUBLIC_FUNCTION(
boost::contract::test::detail::unprotected_commas<void, void,
void>::same(v),
boost::contract::test::detail::unprotected_commas<void, void,
void>::same(this)
)
BOOST_CONTRACT_POSTCONDITION([&] {
boost::contract::test::detail::unprotected_commas<
void, void, void>::call();
if(old_x) {
BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
++old_checks;
}
})
;
++x;
}
BOOST_CONTRACT_OVERRIDE(next)
};
template<typename T>
struct a
#define BASES public b<T>
: BASES
{
typedef BOOST_CONTRACT_BASE_TYPES(BASES) base_types;
#undef BASES
virtual void next(T& x, boost::contract::virtual_* v = 0) /* override */ {
BOOST_CONTRACT_OLD_PTR_IF_COPYABLE(
typename boost::contract::test::detail::unprotected_commas<T, void,
void>::type1
)(
(boost::contract::test::detail::unprotected_commas<void, void,
void>::same(v)),
old_x,
(boost::contract::test::detail::unprotected_commas<void, void,
void>::same(x))
);
BOOST_CONTRACT_PUBLIC_FUNCTION_OVERRIDE(
typename boost::contract::test::detail::unprotected_commas<
override_next, void, void>::type1
)(
boost::contract::test::detail::unprotected_commas<void, void,
void>::same(v),
&a::next,
boost::contract::test::detail::unprotected_commas<void, void,
void>::same(this),
boost::contract::test::detail::unprotected_commas<void, void,
void>::same(x)
)
BOOST_CONTRACT_POSTCONDITION([&] {
boost::contract::test::detail::unprotected_commas<
void, void, void>::call();
if(old_x) {
BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
++old_checks;
}
})
;
++x;
}
BOOST_CONTRACT_OVERRIDE(next)
};
template<typename T>
void next(T& x) {
BOOST_CONTRACT_OLD_PTR_IF_COPYABLE(
typename boost::contract::test::detail::unprotected_commas<T, void,
void>::type1
)(
old_x,
(boost::contract::test::detail::unprotected_commas<void, void,
void>::same(x))
);
BOOST_CONTRACT_FUNCTION()
BOOST_CONTRACT_POSTCONDITION([&] {
boost::contract::test::detail::unprotected_commas<void, void, void>
::call();
if(old_x) {
BOOST_CONTRACT_ASSERT(x == *old_x + T(1));
++old_checks;
}
})
;
++x;
}
int main() {
int i = 1; // Test built-in copyable type.
cp c(1); // Test custom copyable type.
ncp n(1); // Test non-copyable type.
// Test free functions (old values without `v`).
unsigned cnt =
#ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
1
#else
0
#endif
;
old_checks = 0;
next(i);
BOOST_TEST_EQ(old_checks, cnt);
old_checks = 0;
next(c);
BOOST_TEST_EQ(old_checks, cnt);
old_checks = 0;
next(n);
BOOST_TEST_EQ(old_checks, 0u);
// Test virtual functions (old values with `v`).
cnt =
#ifndef BOOST_CONTRACT_NO_POSTCONDITIONS
2
#else
0
#endif
;
a<int> ai;
old_checks = 0;
ai.next(i);
BOOST_TEST_EQ(old_checks, cnt);
a<cp> ac;
old_checks = 0;
ac.next(c);
BOOST_TEST_EQ(old_checks, cnt);
a<ncp> an;
old_checks = 0;
an.next(n);
BOOST_TEST_EQ(old_checks, 0u);
return boost::report_errors();
}
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