swig/Examples/test-suite/cpp0x_lambda_functions.i
2012-10-04 06:05:28 +00:00

84 lines
2.5 KiB
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/* This testcase checks whether SWIG correctly parses the lambda expressions
and closure syntax introduced in C++0x.
SWIG supports only lambda syntax and doesn't produce any wrapper code for
this.
*/
%module cpp0x_lambda_functions
#pragma SWIG nowarn=SWIGWARN_LANG_NATIVE_UNIMPL
%inline %{
/* Defined lambda function with return value. */
auto lambda1 = [](int x, int y) -> int { return x+y; };
/* Defined lambda function without return value.
Return value is calculated by compiler, if the function contains a
single statement "return expr;". */
auto lambda2 = [](int x, int y) { return x+y; };
auto lambda3 = [&](int x, int y) { return x+y; };
auto lambda4 = [=](int x, int y) { return x+y; };
int thing = 0;
#ifdef SWIG
// Not strictly correct as captured variables should have non-automatic storage duration, ie shouldn't capture globals. gcc-4.7 warns about this, but we check that SWIG can parse this anyway.
auto lambda5 = [=,&thing]() { return thing; };
#else
auto lambda5 = [=]() { return thing; };
#endif
void fn() {
int stuff = 0;
auto lambdaxxxx = [=,&stuff]() { return thing; };
}
auto lambda6 = [] (int a, int b) mutable { return a + b; };
auto lambda7 = [] (int x, int y) -> int { return x+y; };
auto lambda8 = [] (int x, int y) throw() -> int { return x+y; };
auto lambda9 = [] (int x, int y) mutable throw() -> int { return x+y; };
auto lambda10 = [] (int x, int y) throw(int) { return x+y; };
auto lambda11 = [] (int x, int y) mutable throw(int) { return x+y; };
auto lambda12 = [] (int a, int b) { return a + b; }(1, 2);
auto lambda13 = [] (int a, int b) mutable { return a + b; }(1, 2);
auto lambda14 = [] () throw () {};
auto lambda15 = [] () mutable throw () {};
auto lambda16 = [] { return thing; };
auto lambda17 = [] { return thing; }();
constexpr auto lambda18 = [] (int x, int y) mutable throw(int) { return x+y; };
int runLambda1() {
return lambda1(5,6);
}
int runLambda2() {
return lambda2(5,6);
}
int runLambda3() {
return lambda3(5,6);
}
int runLambda4() {
return lambda4(5,6);
}
int runLambda5() {
thing++;
return lambda5();
}
/* Inline defined lambda function. */
int runLambdaInline() {
auto myLambda = [](int x, int y) { return x+y; };
return myLambda(5,6);
}
%}
%{
// TODO
struct LambdaStruct {
static constexpr auto lambda_struct1 = [=]() { return thing; };
};
int(*lambda101notauto)(int, int) = [] (int a, int b) { return a + b; };
int lambda102 = [] (int a, int b) mutable { return a + b; }(1, 2);
void lambda_init(int = ([=]{ return 0; })());
%}