mirror of https://github.com/PrimeDecomp/prime.git
41 lines
1.5 KiB
C++
41 lines
1.5 KiB
C++
// C++98 static assert
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#ifdef __MWERKS__
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struct false_type {
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static const int value = 0;
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};
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struct true_type {
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static const int value = 1;
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};
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template < int A, int B >
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struct _n_is_equal : false_type {};
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template < int A >
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struct _n_is_equal< A, A > : true_type {};
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template < class T, int N >
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struct check_sizeof : _n_is_equal< sizeof(T), N > {};
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#ifndef offsetof
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typedef unsigned long size_t;
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#define offsetof(type, member) ((size_t) & (((type*)0)->member))
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#endif
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#define CHECK_SIZEOF(cls, size) extern int cls##_check[check_sizeof< cls, size >::value];
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#define NESTED_CHECK_SIZEOF(parent, cls, size) \
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extern int cls##_check[check_sizeof< parent::cls, size >::value];
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#define CHECK_OFFSETOF(cls, member, offset) \
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extern int cls##_check_offset##[_n_is_equal< offsetof(cls, member), offset >::value];
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#elif defined(__clang__) && defined(__powerpc__) // Enable for clangd
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#pragma clang diagnostic ignored "-Wc11-extensions" // Allow _Static_assert
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#pragma clang diagnostic ignored "-Wc++17-extensions" // Allow _Static_assert without message
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#define CHECK_SIZEOF(cls, size) _Static_assert(sizeof(cls) == size);
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#define NESTED_CHECK_SIZEOF(parent, cls, size) _Static_assert(sizeof(parent::cls) == size);
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#define CHECK_OFFSETOF(cls, member, offset) _Static_assert(offsetof(cls, member) == offset);
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#else
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#define CHECK_SIZEOF(cls, size)
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#define NESTED_CHECK_SIZEOF(parent, cls, size)
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#define CHECK_OFFSETOF(cls, member, offset)
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#endif
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