65 lines
1.2 KiB
C
65 lines
1.2 KiB
C
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////
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// Macro for dimension of static arrays.
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#if !defined(FUSION_INC_NUMBEROF_H_INCLUDED_)
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#define FUSION_INC_NUMBEROF_H_INCLUDED_
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#pragma once
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#if defined(NUMBER_OF)
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#undef NUMBER_OF
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#endif
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#if FUSION_USE_CHECKED_NUMBER_OF
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//
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// Note!
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//
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// Use of this "checked" number of macro causes CRT initializers to have to run
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// for static/constant arrays.
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//
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// We cannot enable this for fusion right now, but turning it on and running at
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// least will lead to the compiler errors
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//
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// Static arrays will match this signature.
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template< typename T
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>
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inline
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SIZE_T
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NUMBER_OF_validate
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( void const *
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, T
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)
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throw()
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{
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return (0);
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}
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// Other things (e.g. pointers) will match this signature.
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template< typename T
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>
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inline
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void
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NUMBER_OF_validate
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( T * const
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, T * const *
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)
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throw()
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{
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}
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// Use the size of the validation function's return type to create an
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// error when this macro is misused.
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#define NUMBER_OF(array) \
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(sizeof(NUMBER_OF_validate((array), &(array))), \
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(sizeof((array)) / sizeof((array)[0])))
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#else
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#define NUMBER_OF(x) (sizeof(x) / sizeof((x)[0]))
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#endif // FUSION_USE_CHECKED_NUMBER_OF
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#endif // !defined(FUSION_INC_NUMBEROF_H_INCLUDED_)
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