File content as of revision 6:a8c83a2e6fa4:

/*******************************************************************************
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#ifndef MaximInterface_SafeBool
#define MaximInterface_SafeBool

#include <stddef.h>

namespace MaximInterface {
namespace detail {

// Implement SafeBool as a member function pointer since some compilers allow
// function pointer to void pointer conversion.
struct SafeBoolHelper {
  void trueValue() const {}
  
private:
  SafeBoolHelper(); // deleted
};

} // namespace detail

/// SafeBool is a boolean type that eliminates many error-prone implicit
/// conversions allowed by the fundamental bool type.
/// @note
/// SafeBool can be used to add an explicit bool conversion operator to a type.
typedef void (detail::SafeBoolHelper::*SafeBool)() const;

/// Constructor for SafeBool.
inline SafeBool makeSafeBool(bool value) {
  return value ? &detail::SafeBoolHelper::trueValue : NULL;
}

} // namespace MaximInterface

#endif