source/core/inttypes.h

   1 #ifndef MSP_CORE_INTTYPES_H_
   2 #define MSP_CORE_INTTYPES_H_
   3
   4 #include <climits>
   5 #include "typelist.h"
   6
   7 namespace Msp {
   8
   9 // Define lists of standard types, both signed and unsigned variants
  10 typedef TypeList<signed char, short, int, long>::Type StandardSignedTypes;
  11 typedef TypeList<unsigned char, unsigned short, unsigned int, unsigned long>::Type StandardUnsignedTypes;
  12
  13 // Then add possible nonstandard types
  14 #if defined(__GNUC__)
  15 #if (__GNUC__>4 || (__GNUC__==4 && __GNUC_MINOR__>=6)) && defined(__LP64__)
  16 #pragma GCC diagnostic push
  17 #if __GNUC__>=5
  18 #pragma GCC diagnostic ignored "-Wpedantic"
  19 #else
  20 #pragma GCC diagnostic ignored "-pedantic"
  21 #endif
  22 typedef TypeList<StandardSignedTypes, long long, __int128>::Type PlatformSignedTypes;
  23 typedef TypeList<StandardUnsignedTypes, unsigned long long, unsigned __int128>::Type PlatformUnsignedTypes;
  24 #pragma GCC diagnostic pop
  25 #else
  26 typedef TypeList<StandardSignedTypes, long long>::Type PlatformSignedTypes;
  27 typedef TypeList<StandardUnsignedTypes, unsigned long long>::Type PlatformUnsignedTypes;
  28 #endif
  29 #elif defined(_MSC_VER)
  30 typedef TypeList<StandardSignedTypes, __int64>::Type PlatformSignedTypes;
  31 typedef TypeList<StandardUnsignedTypes, unsigned __int64>::Type PlatformUnsignedTypes;
  32 #else
  33 typedef StandardSignedTypes PlatformSignedTypes;
  34 typedef StandardUnsignedTypes PlatformUnsignedTypes;
  35 #endif
  36
  37 /** A helper for choosing an integer type of a specific size.  The size
  38 parameter is in bits.  The resulting types can be obtained from the SignedType
  39 and UnsignedType typedefs. */
  40 template<unsigned size>
  41 struct Int
  42 {
  43         template<typename T>
  44         struct Predicate
  45         {
  46                 enum { value = (sizeof(T)*CHAR_BIT==size) };
  47         };
  48
  49         typedef typename TypeChooser<PlatformSignedTypes, Predicate>::Type SignedType;
  50         typedef typename TypeChooser<PlatformUnsignedTypes, Predicate>::Type UnsignedType;
  51 };
  52
  53 /** A helper for choosing an integer that's the same size as another type. */
  54 template<typename T>
  55 struct MatchingInt: Int<sizeof(T)*CHAR_BIT>
  56 { };
  57
  58 // Finally define convenient shorthands for the actual integer types
  59 typedef Int<8>::SignedType Int8;
  60 typedef Int<8>::UnsignedType UInt8;
  61 typedef Int<16>::SignedType Int16;
  62 typedef Int<16>::UnsignedType UInt16;
  63 typedef Int<32>::SignedType Int32;
  64 typedef Int<32>::UnsignedType UInt32;
  65 typedef Int<64>::SignedType Int64;
  66 typedef Int<64>::UnsignedType UInt64;
  67 typedef MatchingInt<void *>::UnsignedType IntPtr;
  68
  69 } // namespace Msp
  70
  71 #endif