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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [g++.dg/] [template/] [sfinae13.C] - Blame information for rev 715

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// DR 339
//
// Test of the use of casts with SFINAE
 
// Boilerplate helpers
typedef char yes_type;
struct no_type { char data[2]; };
 
template T create_a();
template struct type { };
 
template struct enable_if { typedef T type; };
template struct enable_if { };
 
#define JOIN( X, Y ) DO_JOIN( X, Y )
#define DO_JOIN( X, Y ) DO_JOIN2(X,Y)
#define DO_JOIN2( X, Y ) X##Y
 
#define CHECK_CAST(CastKind)                                            \
template                                        \
 typename enable_if<(sizeof((JOIN(CastKind,_cast)(create_a())), 0) > 0), \
                   yes_type>::type                                      \
  JOIN(check_,JOIN(CastKind,_cast))(int);                               \
                                                                        \
template                                        \
  no_type JOIN(check_,JOIN(CastKind,_cast))(...);                       \
                                                                        \
template                                        \
struct JOIN(has_,JOIN(CastKind,_cast))                                  \
{                                                                       \
  static const bool value =                                             \
    (sizeof(JOIN(check_,JOIN(CastKind,_cast))(0)) == sizeof(yes_type)); \
}
 
template
typename enable_if<(sizeof(((U)create_a()), 0) > 0), yes_type>::type
  check_c_cast(int);
 
template no_type check_c_cast(...);
 
template
struct has_c_cast
{
  static const bool value =
    (sizeof(check_c_cast(0)) == sizeof(yes_type));
};
 
#ifdef __GXX_EXPERIMENTAL_CXX0X__
#  define STATIC_ASSERT(Expr) static_assert(Expr, #Expr)
#else
#  define STATIC_ASSERT(Expr) int JOIN(a,__LINE__)[Expr? 1 : -1]
#endif
 
CHECK_CAST(static);
CHECK_CAST(dynamic);
CHECK_CAST(const);
CHECK_CAST(reinterpret);
 
struct X { virtual void f(); };
struct Y { operator bool(); };
struct Z : public X { };
 
STATIC_ASSERT((has_static_cast::value));
STATIC_ASSERT((!has_static_cast::value));
STATIC_ASSERT((has_static_cast::value));
 
STATIC_ASSERT(!(has_dynamic_cast::value));
STATIC_ASSERT(!(has_dynamic_cast::value));
STATIC_ASSERT(!(has_dynamic_cast::value));
STATIC_ASSERT(!(has_dynamic_cast::value));
STATIC_ASSERT((has_dynamic_cast::value));
STATIC_ASSERT((has_dynamic_cast::value));
STATIC_ASSERT(!(has_dynamic_cast::value));
 
STATIC_ASSERT(!(has_const_cast::value));
STATIC_ASSERT((has_const_cast::value));
STATIC_ASSERT((has_const_cast::value));
STATIC_ASSERT(!(has_const_cast::value));
 
STATIC_ASSERT((has_reinterpret_cast::value));
STATIC_ASSERT(!(has_reinterpret_cast::value));
STATIC_ASSERT(!(has_reinterpret_cast::value));
 
STATIC_ASSERT((has_c_cast::value));
STATIC_ASSERT(!(has_c_cast::value));
STATIC_ASSERT(!(has_c_cast::value));

Line No.	Rev	Author	Line
1	693	jeremybenn	`// DR 339`
2			`//`
3			`// Test of the use of casts with SFINAE`
4
5			`// Boilerplate helpers`
6			`typedef char yes_type;`
7			`struct no_type { char data[2]; };`
8
9			`template T create_a();`
10			`template struct type { };`
11
12			`template struct enable_if { typedef T type; };`
13			`template struct enable_if { };`
14
15			`#define JOIN( X, Y ) DO_JOIN( X, Y )`
16			`#define DO_JOIN( X, Y ) DO_JOIN2(X,Y)`
17			`#define DO_JOIN2( X, Y ) X##Y`
18
19			`#define CHECK_CAST(CastKind) \`
20			`template \`
21			`typename enable_if<(sizeof((JOIN(CastKind,_cast)(create_a())), 0) > 0), \`
22			`yes_type>::type \`
23			`JOIN(check_,JOIN(CastKind,_cast))(int); \`
24			`\`
25			`template \`
26			`no_type JOIN(check_,JOIN(CastKind,_cast))(...); \`
27			`\`
28			`template \`
29			`struct JOIN(has_,JOIN(CastKind,_cast)) \`
30			`{ \`
31			`static const bool value = \`
32			`(sizeof(JOIN(check_,JOIN(CastKind,_cast))(0)) == sizeof(yes_type)); \`
33			`}`
34
35			`template`
36			`typename enable_if<(sizeof(((U)create_a()), 0) > 0), yes_type>::type`
37			`check_c_cast(int);`
38
39			`template no_type check_c_cast(...);`
40
41			`template`
42			`struct has_c_cast`
43			`{`
44			`static const bool value =`
45			`(sizeof(check_c_cast(0)) == sizeof(yes_type));`
46			`};`
47
48			`#ifdef __GXX_EXPERIMENTAL_CXX0X__`
49			`# define STATIC_ASSERT(Expr) static_assert(Expr, #Expr)`
50			`#else`
51			`# define STATIC_ASSERT(Expr) int JOIN(a,__LINE__)[Expr? 1 : -1]`
52			`#endif`
53
54			`CHECK_CAST(static);`
55			`CHECK_CAST(dynamic);`
56			`CHECK_CAST(const);`
57			`CHECK_CAST(reinterpret);`
58
59			`struct X { virtual void f(); };`
60			`struct Y { operator bool(); };`
61			`struct Z : public X { };`
62
63			`STATIC_ASSERT((has_static_cast::value));`
64			`STATIC_ASSERT((!has_static_cast::value));`
65			`STATIC_ASSERT((has_static_cast::value));`
66
67			`STATIC_ASSERT(!(has_dynamic_cast::value));`
68			`STATIC_ASSERT(!(has_dynamic_cast::value));`
69			`STATIC_ASSERT(!(has_dynamic_cast::value));`
70			`STATIC_ASSERT(!(has_dynamic_cast::value));`
71			`STATIC_ASSERT((has_dynamic_cast::value));`
72			`STATIC_ASSERT((has_dynamic_cast::value));`
73			`STATIC_ASSERT(!(has_dynamic_cast::value));`
74
75			`STATIC_ASSERT(!(has_const_cast::value));`
76			`STATIC_ASSERT((has_const_cast::value));`
77			`STATIC_ASSERT((has_const_cast::value));`
78			`STATIC_ASSERT(!(has_const_cast::value));`
79
80			`STATIC_ASSERT((has_reinterpret_cast::value));`
81			`STATIC_ASSERT(!(has_reinterpret_cast::value));`
82			`STATIC_ASSERT(!(has_reinterpret_cast::value));`
83
84			`STATIC_ASSERT((has_c_cast::value));`
85			`STATIC_ASSERT(!(has_c_cast::value));`
86			`STATIC_ASSERT(!(has_c_cast::value));`

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[/] [openrisc/] [trunk/] [gnu-dev/] [or1k-gcc/] [gcc/] [testsuite/] [g++.dg/] [template/] [sfinae13.C] - Blame information for rev 715