mirror of
https://github.com/boostorg/lambda2.git
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80 lines
1.6 KiB
C++
80 lines
1.6 KiB
C++
// Copyright 2021 Peter Dimov
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// Distributed under the Boost Software License, Version 1.0.
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// https://www.boost.org/LICENSE_1_0.txt
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#include <boost/lambda2.hpp>
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#include <boost/core/lightweight_test.hpp>
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#include <utility>
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struct X
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{
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int m1;
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int m2;
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int f1() const
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{
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return m1;
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}
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int& f2()
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{
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return m2;
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}
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};
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int main()
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{
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using namespace boost::lambda2;
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{
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X const x{ 1, 2 };
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BOOST_TEST_EQ( (_1->*&X::m1)( x ), 1 );
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BOOST_TEST_EQ( (_1->*&X::m2)( x ), 2 );
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BOOST_TEST_EQ( (_1->*&X::f1)( x ), 1 );
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}
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{
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X x{ 0, 0 };
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BOOST_TEST_EQ( (_1->*&X::m1)( x ), 0 );
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BOOST_TEST_EQ( (_1->*&X::m2)( x ), 0 );
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BOOST_TEST_EQ( (_1->*&X::f1)( x ), 0 );
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BOOST_TEST_EQ( (_1->*&X::f2)( x ), 0 );
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#if defined(_LIBCPP_VERSION)
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// https://bugs.llvm.org/show_bug.cgi?id=51753
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using std::placeholders::_1;
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#endif
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BOOST_TEST_EQ( (_1->*&X::m1 += 1)( x ), 1 );
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BOOST_TEST_EQ( (_1->*&X::m2 += 2)( x ), 2 );
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BOOST_TEST_EQ( (_1->*&X::f1)( x ), 1 );
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BOOST_TEST_EQ( (_1->*&X::f2)( x ), 2 );
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BOOST_TEST_EQ( (_1->*&X::f2 += 3)( x ), 5 );
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}
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{
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std::pair<int, int> const x( 1, 2 );
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BOOST_TEST_EQ( (_1->*&std::pair<int, int>::first)( x ), 1 );
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BOOST_TEST_EQ( (_1->*&std::pair<int, int>::second)( x ), 2 );
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#if defined(_LIBCPP_VERSION)
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// https://bugs.llvm.org/show_bug.cgi?id=51753
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using std::placeholders::_1;
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#endif
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BOOST_TEST_EQ( (_1->*first)( x ), 1 );
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BOOST_TEST_EQ( (_1->*second)( x ), 2 );
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}
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return boost::report_errors();
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}
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