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C++11 std::reference_wrapper example - no support

This commit is contained in:
William S Fulton 2014-03-12 21:15:14 +00:00
parent fd5f4c25aa
commit a542c5277d
2 changed files with 37 additions and 0 deletions
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1
Examples/test-suite/common.mk
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@ -530,6 +530,7 @@ CPP11_TEST_BROKEN = \
# cpp11_result_of \ # SWIG does not support
# cpp11_strongly_typed_enumerations \ # SWIG not quite getting this right yet in all langs
# cpp11_variadic_templates \ # Broken for some languages (such as Java)
# cpp11_reference_wrapper \ # No typemaps
#

36
Examples/test-suite/cpp11_reference_wrapper.i Normal file
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@ -0,0 +1,36 @@
%module cpp11_reference_wrapper
// SWIG could provide some sort of typemaps for reference_wrapper which is acts like a C++ reference,
// but is copy-constructible and copy-assignable
%inline %{
#include <iostream>
#include <functional>
using namespace std;
struct B {
B(int &val) : val(val) {}
std::reference_wrapper<int> val;
// int &val;
};
%}
%inline %{
void go() {
int val(999);
B b1(val);
int const& aa1 = b1.val;
cout << aa1 << endl;
// copy constructible
B b2(b1);
int const& aa2 = b2.val;
cout << aa2 << endl;
// copy assignable
B b3(val);
b3 = b1;
int const& aa3 = b3.val;
cout << aa3 << endl;
}
%}