1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
|
/* This testcase checks whether SWIG correctly parses the lambda expressions
and closure syntax introduced in C++11.
SWIG supports only lambda syntax and doesn't produce any wrapper code for
this.
*/
%module cpp11_lambda_functions
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda1;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda2;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda3;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda4;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda5;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda6;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda7;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda8;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda9;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda10;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda11;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda12;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda13;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda14;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda15;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda16;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda17;
%warnfilter(SWIGWARN_CPP11_LAMBDA) lambda18;
%warnfilter(SWIGWARN_CPP11_LAMBDA) Space1::lambda19;
%warnfilter(SWIGWARN_CPP11_LAMBDA) Space1::Space2::lambda20;
// throw is invalid in C++17 and later, only SWIG to use it
#define TESTCASE_THROW0() throw()
#define TESTCASE_THROW1(T1) throw(T1)
%{
#define TESTCASE_THROW0()
#define TESTCASE_THROW1(T1)
%}
%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; };
int thing = 0;
#ifdef SWIG
// This is not strictly legal: non-local lambda expression cannot have a capture-default
// gcc-4.7 warns about this and gcc-9 gives an error, but we check that SWIG can parse this anyway.
auto lambda3 = [&](int x, int y) { return x+y; };
auto lambda4 = [=](int x, int y) { return x+y; };
auto lambda5 = [=,&thing]() { return thing; };
#else
auto lambda3 = [](int x, int y) { return x+y; };
auto lambda4 = [](int x, int y) { return x+y; };
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) TESTCASE_THROW0() -> int { return x+y; };
auto lambda9 = [] (int x, int y) mutable TESTCASE_THROW0() -> int { return x+y; };
auto lambda10 = [] (int x, int y) TESTCASE_THROW1(int) { return x+y; };
auto lambda11 = [] (int x, int y) mutable TESTCASE_THROW1(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 = [] () TESTCASE_THROW0() {};
auto lambda15 = [] () mutable TESTCASE_THROW0() {};
auto lambda16 = [] { return thing; };
auto lambda17 = [] { return thing; }();
#if defined(SWIG) || (defined(__cplusplus) && __cplusplus >= 201703L)
#define CONSTEXPR constexpr
#else
#define CONSTEXPR
#endif
CONSTEXPR auto lambda18 = [] (int x, int y) mutable TESTCASE_THROW1(int) { return x+y; };
namespace Space1 {
CONSTEXPR auto lambda19 = [] (int x, int y) mutable TESTCASE_THROW1(int) { return x+y; };
namespace Space2 {
CONSTEXPR auto lambda20 = [] (int x, int y) mutable TESTCASE_THROW1(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
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; })());
%}
|
