mirror of https://github.com/bsnes-emu/bsnes.git
214 lines
6.8 KiB
C++
214 lines
6.8 KiB
C++
#ifndef NALL_VARINT_HPP
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#define NALL_VARINT_HPP
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#include <nall/primitives.hpp>
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#include <nall/serializer.hpp>
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#include <nall/stdint.hpp>
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namespace nall {
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struct varint {
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virtual auto read() -> uint8_t = 0;
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virtual auto write(uint8_t) -> void = 0;
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auto readvu() -> uintmax_t {
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uintmax_t data = 0, shift = 1;
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while(true) {
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uint8_t x = read();
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data += (x & 0x7f) * shift;
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if(x & 0x80) break;
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shift <<= 7;
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data += shift;
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}
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return data;
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}
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auto readvs() -> intmax_t {
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uintmax_t data = readvu();
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bool negate = data & 1;
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data >>= 1;
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if(negate) data = ~data;
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return data;
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}
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auto writevu(uintmax_t data) -> void {
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while(true) {
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uint8_t x = data & 0x7f;
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data >>= 7;
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if(data == 0) return write(0x80 | x);
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write(x);
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data--;
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}
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}
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auto writevs(intmax_t data) -> void {
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bool negate = data < 0;
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if(negate) data = ~data;
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data = (data << 1) | negate;
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writevu(data);
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}
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};
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template<typename type_t> struct varuint_t {
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inline operator type_t() const { return data; }
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inline auto operator ++(int) { type_t r = data; data = (data + 1) & mask; return r; }
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inline auto operator --(int) { type_t r = data; data = (data - 1) & mask; return r; }
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inline auto operator ++() { return data = (data + 1) & mask; }
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inline auto operator --() { return data = (data - 1) & mask; }
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inline auto operator =(const type_t i) { return data = (i) & mask; }
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inline auto operator |=(const type_t i) { return data = (data | i) & mask; }
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inline auto operator ^=(const type_t i) { return data = (data ^ i) & mask; }
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inline auto operator &=(const type_t i) { return data = (data & i) & mask; }
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inline auto operator<<=(const type_t i) { return data = (data << i) & mask; }
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inline auto operator>>=(const type_t i) { return data = (data >> i) & mask; }
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inline auto operator +=(const type_t i) { return data = (data + i) & mask; }
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inline auto operator -=(const type_t i) { return data = (data - i) & mask; }
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inline auto operator *=(const type_t i) { return data = (data * i) & mask; }
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inline auto operator /=(const type_t i) { return data = (data / i) & mask; }
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inline auto operator %=(const type_t i) { return data = (data % i) & mask; }
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inline auto bits(type_t bits) { mask = (1ull << (bits - 1)) + ((1ull << (bits - 1)) - 1); data &= mask; }
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inline varuint_t() : data(0ull), mask((type_t)~0ull) {}
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inline varuint_t(const type_t i) : data(i), mask((type_t)~0ull) {}
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auto serialize(serializer& s) { s(data); s(mask); }
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private:
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type_t data;
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type_t mask;
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};
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}
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using int1 = nall::Integer< 1>;
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using int2 = nall::Integer< 2>;
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using int3 = nall::Integer< 3>;
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using int4 = nall::Integer< 4>;
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using int5 = nall::Integer< 5>;
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using int6 = nall::Integer< 6>;
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using int7 = nall::Integer< 7>;
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//using int8 = nall::Integer< 8>;
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using int9 = nall::Integer< 9>;
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using int10 = nall::Integer<10>;
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using int11 = nall::Integer<11>;
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using int12 = nall::Integer<12>;
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using int13 = nall::Integer<13>;
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using int14 = nall::Integer<14>;
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using int15 = nall::Integer<15>;
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//using int16 = nall::Integer<16>;
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using int17 = nall::Integer<17>;
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using int18 = nall::Integer<18>;
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using int19 = nall::Integer<19>;
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using int20 = nall::Integer<20>;
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using int21 = nall::Integer<21>;
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using int22 = nall::Integer<22>;
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using int23 = nall::Integer<23>;
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using int24 = nall::Integer<24>;
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using int25 = nall::Integer<25>;
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using int26 = nall::Integer<26>;
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using int27 = nall::Integer<27>;
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using int28 = nall::Integer<28>;
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using int29 = nall::Integer<29>;
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using int30 = nall::Integer<30>;
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using int31 = nall::Integer<31>;
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//using int32 = nall::Integer<32>;
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using int33 = nall::Integer<33>;
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using int34 = nall::Integer<34>;
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using int35 = nall::Integer<35>;
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using int36 = nall::Integer<36>;
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using int37 = nall::Integer<37>;
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using int38 = nall::Integer<38>;
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using int39 = nall::Integer<39>;
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using int40 = nall::Integer<40>;
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using int41 = nall::Integer<41>;
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using int42 = nall::Integer<42>;
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using int43 = nall::Integer<43>;
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using int44 = nall::Integer<44>;
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using int45 = nall::Integer<45>;
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using int46 = nall::Integer<46>;
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using int47 = nall::Integer<47>;
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using int48 = nall::Integer<48>;
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using int49 = nall::Integer<49>;
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using int50 = nall::Integer<50>;
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using int51 = nall::Integer<51>;
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using int52 = nall::Integer<52>;
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using int53 = nall::Integer<53>;
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using int54 = nall::Integer<54>;
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using int55 = nall::Integer<55>;
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using int56 = nall::Integer<56>;
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using int57 = nall::Integer<57>;
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using int58 = nall::Integer<58>;
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using int59 = nall::Integer<59>;
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using int60 = nall::Integer<60>;
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using int61 = nall::Integer<61>;
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using int62 = nall::Integer<62>;
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using int63 = nall::Integer<63>;
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//using int64 = nall::Integer<64>;
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using uint1 = nall::Natural< 1>;
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using uint2 = nall::Natural< 2>;
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using uint3 = nall::Natural< 3>;
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using uint4 = nall::Natural< 4>;
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using uint5 = nall::Natural< 5>;
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using uint6 = nall::Natural< 6>;
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using uint7 = nall::Natural< 7>;
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//using uint8 = nall::Natural< 8>;
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using uint9 = nall::Natural< 9>;
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using uint10 = nall::Natural<10>;
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using uint11 = nall::Natural<11>;
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using uint12 = nall::Natural<12>;
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using uint13 = nall::Natural<13>;
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using uint14 = nall::Natural<14>;
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using uint15 = nall::Natural<15>;
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//using uint16 = nall::Natural<16>;
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using uint17 = nall::Natural<17>;
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using uint18 = nall::Natural<18>;
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using uint19 = nall::Natural<19>;
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using uint20 = nall::Natural<20>;
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using uint21 = nall::Natural<21>;
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using uint22 = nall::Natural<22>;
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using uint23 = nall::Natural<23>;
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using uint24 = nall::Natural<24>;
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using uint25 = nall::Natural<25>;
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using uint26 = nall::Natural<26>;
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using uint27 = nall::Natural<27>;
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using uint28 = nall::Natural<28>;
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using uint29 = nall::Natural<29>;
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using uint30 = nall::Natural<30>;
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using uint31 = nall::Natural<31>;
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//using uint32 = nall::Natural<32>;
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using uint33 = nall::Natural<33>;
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using uint34 = nall::Natural<34>;
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using uint35 = nall::Natural<35>;
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using uint36 = nall::Natural<36>;
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using uint37 = nall::Natural<37>;
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using uint38 = nall::Natural<38>;
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using uint39 = nall::Natural<39>;
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using uint40 = nall::Natural<40>;
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using uint41 = nall::Natural<41>;
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using uint42 = nall::Natural<42>;
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using uint43 = nall::Natural<43>;
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using uint44 = nall::Natural<44>;
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using uint45 = nall::Natural<45>;
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using uint46 = nall::Natural<46>;
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using uint47 = nall::Natural<47>;
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using uint48 = nall::Natural<48>;
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using uint49 = nall::Natural<49>;
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using uint50 = nall::Natural<50>;
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using uint51 = nall::Natural<51>;
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using uint52 = nall::Natural<52>;
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using uint53 = nall::Natural<53>;
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using uint54 = nall::Natural<54>;
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using uint55 = nall::Natural<55>;
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using uint56 = nall::Natural<56>;
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using uint57 = nall::Natural<57>;
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using uint58 = nall::Natural<58>;
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using uint59 = nall::Natural<59>;
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using uint60 = nall::Natural<60>;
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using uint61 = nall::Natural<61>;
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using uint62 = nall::Natural<62>;
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using uint63 = nall::Natural<63>;
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//using uint64 = nall::Natural<64>;
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#endif
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