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Add result<U&, E> specialization. Fixes #72.

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This commit is contained in:
Peter Dimov
2023-09-12 03:34:24 +03:00
parent a57c568324
commit 951b3fe7b4
22 changed files with 1808 additions and 4 deletions
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test/result_move_construct.cpp
+146
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@@ -207,6 +207,8 @@ int main()
BOOST_TEST_EQ( X::instances, 0 );
//
{
result<void> r;
result<void> r2( std::move( r ) );
@@ -245,5 +247,149 @@ int main()
BOOST_TEST_EQ( r2.error(), ec );
}
//
{
int x1 = 1;
result<int&> r1( x1 );
result<int&> r2( std::move( r1 ) );
BOOST_TEST( r1.has_value() );
BOOST_TEST( !r1.has_error() );
BOOST_TEST_EQ( r1.value(), 1 );
BOOST_TEST_EQ( &*r1, &x1 );
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value(), 1 );
BOOST_TEST_EQ( &*r2, &x1 );
}
{
int const x1 = 1;
result<int const&> r1( x1 );
result<int const&> r2( std::move( r1 ) );
BOOST_TEST( r1.has_value() );
BOOST_TEST( !r1.has_error() );
BOOST_TEST_EQ( r1.value(), 1 );
BOOST_TEST_EQ( &*r1, &x1 );
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value(), 1 );
BOOST_TEST_EQ( &*r2, &x1 );
}
{
int x1 = 1;
result<int&> r2(( result<int&>( x1 ) ));
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value(), 1 );
BOOST_TEST_EQ( &*r2, &x1 );
}
{
int const x1 = 1;
result<int const&> r2(( result<int const&>( x1 ) ));
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value(), 1 );
BOOST_TEST_EQ( &*r2, &x1 );
}
{
X x1( 1 );
result<X&> r1( x1 );
result<X&> r2( std::move( r1 ) );
BOOST_TEST( r1.has_value() );
BOOST_TEST( !r1.has_error() );
BOOST_TEST_EQ( r1.value().v_, 1 );
BOOST_TEST_EQ( &*r1, &x1 );
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value().v_, 1 );
BOOST_TEST_EQ( &*r2, &x1 );
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
{
X x1( 1 );
result<X&> r2(( result<X&>( x1 ) ));
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value().v_, 1 );
BOOST_TEST_EQ( &*r2, &x1 );
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
{
X const x1( 1 );
result<X const&> r1( x1 );
result<X const&> r2( std::move( r1 ) );
BOOST_TEST( r1.has_value() );
BOOST_TEST( !r1.has_error() );
BOOST_TEST_EQ( r1.value().v_, 1 );
BOOST_TEST_EQ( &*r1, &x1 );
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value().v_, 1 );
BOOST_TEST_EQ( &*r2, &x1 );
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
{
X const x1( 1 );
result<X const&> r2(( result<X const&>( x1 ) ));
BOOST_TEST( r2.has_value() );
BOOST_TEST( !r2.has_error() );
BOOST_TEST_EQ( r2.value().v_, 1 );
BOOST_TEST_EQ( &*r2, &x1 );
BOOST_TEST_EQ( X::instances, 1 );
}
BOOST_TEST_EQ( X::instances, 0 );
//
return boost::report_errors();
}