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Add Q_STATIC_ASSERT macro, backported from Qt 5.

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This commit is contained in:
Felix Geyer 2012-07-01 21:27:11 +02:00
parent 6ce53b142d
commit 85031658d1
1 changed files with 21 additions and 0 deletions
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21
src/core/Global.h
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@ -42,6 +42,9 @@
# if __has_feature(cxx_nullptr) # if __has_feature(cxx_nullptr)
# define COMPILER_NULLPTR # define COMPILER_NULLPTR
# endif # endif
# if __has_feature(cxx_static_assert)
# define COMPILER_STATIC_ASSERT
# endif
# endif # endif
#endif // Q_CC_CLANG #endif // Q_CC_CLANG
@ -50,6 +53,7 @@
# if (__GNUC__ * 100 + __GNUC_MINOR__) >= 403 # if (__GNUC__ * 100 + __GNUC_MINOR__) >= 403
/* C++11 features supported in GCC 4.3: */ /* C++11 features supported in GCC 4.3: */
# define COMPILER_DECLTYPE # define COMPILER_DECLTYPE
# define COMPILER_STATIC_ASSERT
# endif # endif
# if (__GNUC__ * 100 + __GNUC_MINOR__) >= 404 # if (__GNUC__ * 100 + __GNUC_MINOR__) >= 404
# define COMPILER_CLASS_ENUM # define COMPILER_CLASS_ENUM
@ -99,4 +103,21 @@
# endif # endif
#endif #endif
#if !defined(Q_STATIC_ASSERT) && !defined(Q_STATIC_ASSERT_X)
#ifdef COMPILER_STATIC_ASSERT
#define Q_STATIC_ASSERT(Condition) static_assert(bool(Condition), #Condition)
#define Q_STATIC_ASSERT_X(Condition, Message) static_assert(bool(Condition), Message)
#else
// Intentionally undefined
template <bool Test> class QStaticAssertFailure;
template <> class QStaticAssertFailure<true> {};
#define Q_STATIC_ASSERT_PRIVATE_JOIN(A, B) Q_STATIC_ASSERT_PRIVATE_JOIN_IMPL(A, B)
#define Q_STATIC_ASSERT_PRIVATE_JOIN_IMPL(A, B) A ## B
#define Q_STATIC_ASSERT(Condition) \
enum {Q_STATIC_ASSERT_PRIVATE_JOIN(q_static_assert_result, __LINE__) = sizeof(QStaticAssertFailure<!!(Condition)>)}
#define Q_STATIC_ASSERT_X(Condition, Message) Q_STATIC_ASSERT(Condition)
#endif // COMPILER_STATIC_ASSERT
#endif // !defined(Q_STATIC_ASSERT) && !defined(Q_STATIC_ASSERT_X)
#endif // KEEPASSX_GLOBAL_H #endif // KEEPASSX_GLOBAL_H