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41 | |
42 | #ifndef QTCONCURRENT_COMPILERTEST_H |
43 | #define QTCONCURRENT_COMPILERTEST_H |
44 | |
45 | #include <QtCore/qglobal.h> |
46 | |
47 | #ifndef QT_NO_CONCURRENT |
48 | |
49 | QT_BEGIN_HEADER |
50 | QT_BEGIN_NAMESPACE |
51 | |
52 | QT_MODULE(Core) |
53 | |
54 | #if defined (Q_CC_MSVC) && (_MSC_VER < 1300) |
55 | # define QT_TYPENAME |
56 | #else |
57 | # define QT_TYPENAME typename |
58 | #endif |
59 | |
60 | namespace QtPrivate { |
61 | |
62 | template<class T> |
63 | class HasResultType { |
64 | typedef char Yes; |
65 | typedef void *No; |
66 | template<typename U> static Yes test(int, const typename U::result_type * = 0); |
67 | template<typename U> static No test(double); |
68 | public: |
69 | enum { Value = (sizeof(test<T>(0)) == sizeof(Yes)) }; |
70 | }; |
71 | |
72 | } |
73 | |
74 | QT_END_NAMESPACE |
75 | QT_END_HEADER |
76 | |
77 | #endif // QT_NO_CONCURRENT |
78 | |
79 | #endif |
80 | |