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- // Boost.Function library
- // Copyright Douglas Gregor 2008. Use, modification and
- // distribution is subject to the Boost Software License, Version
- // 1.0. (See accompanying file LICENSE_1_0.txt or copy at
- // http://www.boost.org/LICENSE_1_0.txt)
- // For more information, see http://www.boost.org
- #include <boost/function.hpp>
- #include <boost/core/lightweight_test.hpp>
- #define BOOST_CHECK BOOST_TEST
- struct tried_to_copy { };
- struct MaybeThrowOnCopy {
- MaybeThrowOnCopy(int value = 0) : value(value) { }
- MaybeThrowOnCopy(const MaybeThrowOnCopy& other) : value(other.value) {
- if (throwOnCopy)
- throw tried_to_copy();
- }
- MaybeThrowOnCopy& operator=(const MaybeThrowOnCopy& other) {
- if (throwOnCopy)
- throw tried_to_copy();
- value = other.value;
- return *this;
- }
- int operator()() { return value; }
- int value;
- // Make sure that this function object doesn't trigger the
- // small-object optimization in Function.
- float padding[100];
- static bool throwOnCopy;
- };
- bool MaybeThrowOnCopy::throwOnCopy = false;
- int main()
- {
- boost::function0<int> f;
- boost::function0<int> g;
- MaybeThrowOnCopy::throwOnCopy = false;
- f = MaybeThrowOnCopy(1);
- g = MaybeThrowOnCopy(2);
- BOOST_CHECK(f() == 1);
- BOOST_CHECK(g() == 2);
- MaybeThrowOnCopy::throwOnCopy = true;
- f.swap(g);
- BOOST_CHECK(f() == 2);
- BOOST_CHECK(g() == 1);
-
- return boost::report_errors();
- }
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