Temporarily add SetNull/IsNull/GetCheapHash to base_uint

Also add a stub for arith_uint256 and its conversion functions,
for now completely based on uint256.

Eases step-by-step migration to blob.
This commit is contained in:
Wladimir J. van der Laan 2014-12-15 10:05:51 +01:00
parent a043facf5a
commit 5d3064bc44
2 changed files with 39 additions and 0 deletions

19
src/arith_uint256.h Normal file
View file

@ -0,0 +1,19 @@
#ifndef BITCOIN_ARITH_UINT256_H
#define BITCOIN_ARITH_UINT256_H
// Temporary for migration to opaque uint160/256
#include "uint256.h"
class arith_uint256 : public uint256 {
public:
arith_uint256() {}
arith_uint256(const base_uint<256>& b) : uint256(b) {}
arith_uint256(uint64_t b) : uint256(b) {}
explicit arith_uint256(const std::string& str) : uint256(str) {}
explicit arith_uint256(const std::vector<unsigned char>& vch) : uint256(vch) {}
};
#define ArithToUint256(x) (x)
#define UintToArith256(x) (x)
#endif // BITCOIN_UINT256_H

View file

@ -283,6 +283,23 @@ public:
{
s.read((char*)pn, sizeof(pn));
}
// Temporary for migration to opaque uint160/256
uint64_t GetCheapHash() const
{
return GetLow64();
}
void SetNull()
{
memset(pn, 0, sizeof(pn));
}
bool IsNull() const
{
for (int i = 0; i < WIDTH; i++)
if (pn[i] != 0)
return false;
return true;
}
};
/** 160-bit unsigned big integer. */
@ -330,4 +347,7 @@ public:
uint64_t GetHash(const uint256& salt) const;
};
// Temporary for migration to opaque uint160/256
inline uint256 uint256S(const std::string &x) { return uint256(x); }
#endif // BITCOIN_UINT256_H