a9a110fbae
Avoid deprecations warnings using c++17 and later compiler. Keep testing using c++11 and c++14 compilers. Provide simple alternative to keep run time tests working with c++17 and later compilers.
66 lines
1.7 KiB
OpenEdge ABL
66 lines
1.7 KiB
OpenEdge ABL
/* This testcase checks whether SWIG correctly uses the new result_of class
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and its templating capabilities introduced in C++11. */
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%module cpp11_result_of
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// std::result_of is deprecated in C++17
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// Replace std implementation with a simple implementation in order to continue testing with C++17 compilers and later
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%inline %{
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typedef double(*fn_ptr)(double);
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%}
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%{
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#if __cplusplus >= 201703L
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namespace std {
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// Forward declaration of result_of
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template<typename Func> struct result_of;
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// Add in the required partial specialization of result_of
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template<> struct result_of< fn_ptr(double) > {
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typedef double type;
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};
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}
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#else
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#include <functional>
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#endif
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%}
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namespace std {
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// Forward declaration of result_of
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template<typename Func> struct result_of;
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// Add in the required partial specialization of result_of
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template<> struct result_of< fn_ptr(double) > {
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typedef double type;
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};
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}
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%template() std::result_of< fn_ptr(double) >;
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%inline %{
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double square(double x) {
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return (x * x);
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}
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template<class Fun, class Arg>
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typename std::result_of<Fun(Arg)>::type test_result_impl(Fun fun, Arg arg) {
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return fun(arg);
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}
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std::result_of< fn_ptr(double) >::type test_result_alternative1(double(*fun)(double), double arg) {
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return fun(arg);
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}
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%}
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%inline %{
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#include <iostream>
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void cpp_testing() {
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std::cout << "result: " << test_result_impl(square, 3) << std::endl;
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std::cout << "result: " << test_result_impl<double(*)(double), double>(square, 4) << std::endl;
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std::cout << "result: " << test_result_impl< fn_ptr, double >(square, 5) << std::endl;
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std::cout << "result: " << test_result_alternative1(square, 6) << std::endl;
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}
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%}
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%template(test_result) test_result_impl< fn_ptr, double>;
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%constant double (*SQUARE)(double) = square;
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