bsnes/purify/phoenix/nall/varint.hpp

#ifndef NALL_VARINT_HPP
#define NALL_VARINT_HPP

#include <nall/bit.hpp>
#include <nall/type_traits.hpp>

namespace nall {
  template<unsigned bits> class uint_t {
  private:
    typedef typename type_if<bits <= 8 * sizeof(unsigned), unsigned, uintmax_t>::type type_t;
    type_t data;

  public:
    inline operator type_t() const { return data; }
    inline type_t operator ++(int) { type_t r = data; data = uclip<bits>(data + 1); return r; }
    inline type_t operator --(int) { type_t r = data; data = uclip<bits>(data - 1); return r; }
    inline type_t operator ++() { return data = uclip<bits>(data + 1); }
    inline type_t operator --() { return data = uclip<bits>(data - 1); }
    inline type_t operator  =(const type_t i) { return data = uclip<bits>(i); }
    inline type_t operator |=(const type_t i) { return data = uclip<bits>(data  | i); }
    inline type_t operator ^=(const type_t i) { return data = uclip<bits>(data  ^ i); }
    inline type_t operator &=(const type_t i) { return data = uclip<bits>(data  & i); }
    inline type_t operator<<=(const type_t i) { return data = uclip<bits>(data << i); }
    inline type_t operator>>=(const type_t i) { return data = uclip<bits>(data >> i); }
    inline type_t operator +=(const type_t i) { return data = uclip<bits>(data  + i); }
    inline type_t operator -=(const type_t i) { return data = uclip<bits>(data  - i); }
    inline type_t operator *=(const type_t i) { return data = uclip<bits>(data  * i); }
    inline type_t operator /=(const type_t i) { return data = uclip<bits>(data  / i); }
    inline type_t operator %=(const type_t i) { return data = uclip<bits>(data  % i); }

    inline uint_t() : data(0) {}
    inline uint_t(const type_t i) : data(uclip<bits>(i)) {}

    template<unsigned s> inline type_t operator=(const uint_t<s> &i) { return data = uclip<bits>((type_t)i); }
    template<unsigned s> inline uint_t(const uint_t<s> &i) : data(uclip<bits>(i)) {}
  };

  template<unsigned bits> class int_t {
  private:
    typedef typename type_if<bits <= 8 * sizeof(signed), signed, intmax_t>::type type_t;
    type_t data;

  public:
    inline operator type_t() const { return data; }
    inline type_t operator ++(int) { type_t r = data; data = sclip<bits>(data + 1); return r; }
    inline type_t operator --(int) { type_t r = data; data = sclip<bits>(data - 1); return r; }
    inline type_t operator ++() { return data = sclip<bits>(data + 1); }
    inline type_t operator --() { return data = sclip<bits>(data - 1); }
    inline type_t operator  =(const type_t i) { return data = sclip<bits>(i); }
    inline type_t operator |=(const type_t i) { return data = sclip<bits>(data  | i); }
    inline type_t operator ^=(const type_t i) { return data = sclip<bits>(data  ^ i); }
    inline type_t operator &=(const type_t i) { return data = sclip<bits>(data  & i); }
    inline type_t operator<<=(const type_t i) { return data = sclip<bits>(data << i); }
    inline type_t operator>>=(const type_t i) { return data = sclip<bits>(data >> i); }
    inline type_t operator +=(const type_t i) { return data = sclip<bits>(data  + i); }
    inline type_t operator -=(const type_t i) { return data = sclip<bits>(data  - i); }
    inline type_t operator *=(const type_t i) { return data = sclip<bits>(data  * i); }
    inline type_t operator /=(const type_t i) { return data = sclip<bits>(data  / i); }
    inline type_t operator %=(const type_t i) { return data = sclip<bits>(data  % i); }

    inline int_t() : data(0) {}
    inline int_t(const type_t i) : data(sclip<bits>(i)) {}

    template<unsigned s> inline type_t operator=(const int_t<s> &i) { return data = sclip<bits>((type_t)i); }
    template<unsigned s> inline int_t(const int_t<s> &i) : data(sclip<bits>(i)) {}
  };

  class varuint_t {
  private:
    unsigned data;
    unsigned mask;

  public:
    inline operator unsigned() const { return data; }
    inline unsigned operator ++(int) { unsigned r = data; data = (data + 1) & mask; return r; }
    inline unsigned operator --(int) { unsigned r = data; data = (data - 1) & mask; return r; }
    inline unsigned operator ++() { return data = (data + 1) & mask; }
    inline unsigned operator --() { return data = (data - 1) & mask; }
    inline unsigned operator  =(const unsigned i) { return data = (i) & mask; }
    inline unsigned operator |=(const unsigned i) { return data = (data  | i) & mask; }
    inline unsigned operator ^=(const unsigned i) { return data = (data  ^ i) & mask; }
    inline unsigned operator &=(const unsigned i) { return data = (data  & i) & mask; }
    inline unsigned operator<<=(const unsigned i) { return data = (data << i) & mask; }
    inline unsigned operator>>=(const unsigned i) { return data = (data >> i) & mask; }
    inline unsigned operator +=(const unsigned i) { return data = (data  + i) & mask; }
    inline unsigned operator -=(const unsigned i) { return data = (data  - i) & mask; }
    inline unsigned operator *=(const unsigned i) { return data = (data  * i) & mask; }
    inline unsigned operator /=(const unsigned i) { return data = (data  / i) & mask; }
    inline unsigned operator %=(const unsigned i) { return data = (data  % i) & mask; }

    inline void bits(unsigned bits) { mask = (1U << (bits - 1)) + ((1U << (bits - 1)) - 1); data &= mask; }
    inline varuint_t() : data(0), mask(~0U) {}
    inline varuint_t(const unsigned i) : data(i), mask(~0U) {}
  };

  class varuintmax_t {
  private:
    uintmax_t data;
    uintmax_t mask;

  public:
    inline operator uintmax_t() const { return data; }
    inline uintmax_t operator ++(int) { uintmax_t r = data; data = (data + 1) & mask; return r; }
    inline uintmax_t operator --(int) { uintmax_t r = data; data = (data - 1) & mask; return r; }
    inline uintmax_t operator ++() { return data = (data + 1) & mask; }
    inline uintmax_t operator --() { return data = (data - 1) & mask; }
    inline uintmax_t operator  =(const uintmax_t i) { return data = (i) & mask; }
    inline uintmax_t operator |=(const uintmax_t i) { return data = (data  | i) & mask; }
    inline uintmax_t operator ^=(const uintmax_t i) { return data = (data  ^ i) & mask; }
    inline uintmax_t operator &=(const uintmax_t i) { return data = (data  & i) & mask; }
    inline uintmax_t operator<<=(const uintmax_t i) { return data = (data << i) & mask; }
    inline uintmax_t operator>>=(const uintmax_t i) { return data = (data >> i) & mask; }
    inline uintmax_t operator +=(const uintmax_t i) { return data = (data  + i) & mask; }
    inline uintmax_t operator -=(const uintmax_t i) { return data = (data  - i) & mask; }
    inline uintmax_t operator *=(const uintmax_t i) { return data = (data  * i) & mask; }
    inline uintmax_t operator /=(const uintmax_t i) { return data = (data  / i) & mask; }
    inline uintmax_t operator %=(const uintmax_t i) { return data = (data  % i) & mask; }

    inline void bits(unsigned bits) { mask = (1ULL << (bits - 1)) + ((1ULL << (bits - 1)) - 1); data &= mask; }
    inline varuintmax_t() : data(0), mask(~0ULL) {}
    inline varuintmax_t(const uintmax_t i) : data(i), mask(~0ULL) {}
  };
}

//typedefs
  typedef nall::uint_t< 1> uint1_t;
  typedef nall::uint_t< 2> uint2_t;
  typedef nall::uint_t< 3> uint3_t;
  typedef nall::uint_t< 4> uint4_t;
  typedef nall::uint_t< 5> uint5_t;
  typedef nall::uint_t< 6> uint6_t;
  typedef nall::uint_t< 7> uint7_t;
//typedef nall::uint_t< 8> uint8_t;
  typedef nall::uint_t< 9> uint9_t;
  typedef nall::uint_t<10> uint10_t;
  typedef nall::uint_t<11> uint11_t;
  typedef nall::uint_t<12> uint12_t;
  typedef nall::uint_t<13> uint13_t;
  typedef nall::uint_t<14> uint14_t;
  typedef nall::uint_t<15> uint15_t;
//typedef nall::uint_t<16> uint16_t;
  typedef nall::uint_t<17> uint17_t;
  typedef nall::uint_t<18> uint18_t;
  typedef nall::uint_t<19> uint19_t;
  typedef nall::uint_t<20> uint20_t;
  typedef nall::uint_t<21> uint21_t;
  typedef nall::uint_t<22> uint22_t;
  typedef nall::uint_t<23> uint23_t;
  typedef nall::uint_t<24> uint24_t;
  typedef nall::uint_t<25> uint25_t;
  typedef nall::uint_t<26> uint26_t;
  typedef nall::uint_t<27> uint27_t;
  typedef nall::uint_t<28> uint28_t;
  typedef nall::uint_t<29> uint29_t;
  typedef nall::uint_t<30> uint30_t;
  typedef nall::uint_t<31> uint31_t;
//typedef nall::uint_t<32> uint32_t;

  typedef nall::int_t< 1> int1_t;
  typedef nall::int_t< 2> int2_t;
  typedef nall::int_t< 3> int3_t;
  typedef nall::int_t< 4> int4_t;
  typedef nall::int_t< 5> int5_t;
  typedef nall::int_t< 6> int6_t;
  typedef nall::int_t< 7> int7_t;
//typedef nall::int_t< 8> int8_t;
  typedef nall::int_t< 9> int9_t;
  typedef nall::int_t<10> int10_t;
  typedef nall::int_t<11> int11_t;
  typedef nall::int_t<12> int12_t;
  typedef nall::int_t<13> int13_t;
  typedef nall::int_t<14> int14_t;
  typedef nall::int_t<15> int15_t;
//typedef nall::int_t<16> int16_t;
  typedef nall::int_t<17> int17_t;
  typedef nall::int_t<18> int18_t;
  typedef nall::int_t<19> int19_t;
  typedef nall::int_t<20> int20_t;
  typedef nall::int_t<21> int21_t;
  typedef nall::int_t<22> int22_t;
  typedef nall::int_t<23> int23_t;
  typedef nall::int_t<24> int24_t;
  typedef nall::int_t<25> int25_t;
  typedef nall::int_t<26> int26_t;
  typedef nall::int_t<27> int27_t;
  typedef nall::int_t<28> int28_t;
  typedef nall::int_t<29> int29_t;
  typedef nall::int_t<30> int30_t;
  typedef nall::int_t<31> int31_t;
//typedef nall::int_t<32> int32_t;

#endif