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dimxy
2019-04-08 17:53:09 +05:00
parent 4cd2814aa8
commit 92b30e07f0
3 changed files with 29 additions and 24 deletions
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31
src/cc/prices.cpp
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@@ -146,11 +146,11 @@ CBOPRET creates trustless oracles, which can be used for making a synthetic cash
// helpers:
// returns true if there are only digits and no alphas in 's'
inline bool is_weight(std::string s) {
// returns true if there are only digits and no alphas or slashes in 's'
inline bool is_weight_str(std::string s) {
return
std::count_if(s.begin(), s.end(), [](unsigned char c) { return std::isdigit(c); } ) > 0 &&
std::count_if(s.begin(), s.end(), [](unsigned char c) { return std::isalpha(c); } ) == 0;
std::count_if(s.begin(), s.end(), [](unsigned char c) { return std::isalpha(c) || c == '/'; } ) == 0;
}
@@ -285,7 +285,7 @@ int32_t prices_syntheticvec(std::vector<uint16_t> &vec,std::vector<std::string>
{
int32_t i,need,ind,depth = 0; std::string opstr; uint16_t opcode,weight;
if (synthetic.size() == 0) {
std::cerr << "synthetic expression is empty" << std::endl;
std::cerr << "prices_syntheticvec() expression is empty" << std::endl;
return(-1);
}
for (i=0; i<synthetic.size(); i++)
@@ -306,7 +306,7 @@ int32_t prices_syntheticvec(std::vector<uint16_t> &vec,std::vector<std::string>
opcode = PRICES_MMM, need = 3;
else if ( opstr == "///" )
opcode = PRICES_DDD, need = 3;
else if (!is_weight(opstr) && (ind= komodo_priceind(opstr.c_str())) >= 0 )
else if (!is_weight_str(opstr) && (ind= komodo_priceind(opstr.c_str())) >= 0 )
opcode = ind, need = 0;
else if ( (weight= atoi(opstr.c_str())) > 0 && weight < KOMODO_MAXPRICES )
{
@@ -314,30 +314,34 @@ int32_t prices_syntheticvec(std::vector<uint16_t> &vec,std::vector<std::string>
need = 1;
}
else {
std::cerr << "incorrect opcode=" << opstr << std::endl;
std::cerr << "prices_syntheticvec() incorrect opcode=" << opstr << std::endl;
return(-2);
}
if (depth < need) {
std::cerr << "incorrect not enough operands for opcode=" << opstr << std::endl;
std::cerr << "prices_syntheticvec() incorrect not enough operands for opcode=" << opstr << std::endl;
return(-3);
}
depth -= need;
if ( (opcode & KOMODO_PRICEMASK) != PRICES_WEIGHT ) // weight
depth++;
std::cerr << "opcode=" << opcode << " opstr=" << opstr << " depth-=need=" << depth << std::endl;
if ((opcode & KOMODO_PRICEMASK) != PRICES_WEIGHT) { // skip weight
depth++; // increase operands count
std::cerr << "depth++=" << depth << std::endl;
}
if (depth > 3) {
std::cerr << "to many operands, last=" << opstr << std::endl;
std::cerr << "prices_syntheticvec() to many operands, last=" << opstr << std::endl;
return(-4);
}
vec.push_back(opcode);
}
if ( depth != 0 )
{
fprintf(stderr,"depth.%d not empty\n",depth);
fprintf(stderr,"prices_syntheticvec() depth.%d not empty\n",depth);
return(-5);
}
return(0);
}
// calculate price for synthetic expression
int64_t prices_syntheticprice(std::vector<uint16_t> vec,int32_t height,int32_t minmax,int16_t leverage)
{
int32_t i,ind,errcode,depth,retval = -1; uint16_t opcode; int64_t pricedata[PRICES_MAXDATAPOINTS],pricestack[4],price,den,a,b,c;
@@ -345,7 +349,7 @@ int64_t prices_syntheticprice(std::vector<uint16_t> vec,int32_t height,int32_t m
for (i=0; i<vec.size(); i++)
{
opcode = vec[i];
ind = (opcode & (KOMODO_MAXPRICES-1));
ind = (opcode & (KOMODO_MAXPRICES-1)); // weight value
switch ( opcode & KOMODO_PRICEMASK )
{
case 0:
@@ -358,7 +362,8 @@ int64_t prices_syntheticprice(std::vector<uint16_t> vec,int32_t height,int32_t m
{
if ( leverage > 0 )
pricestack[depth] = (pricedata[1] > pricedata[2]) ? pricedata[1] : pricedata[2]; // MAX
else pricestack[depth] = (pricedata[1] < pricedata[2]) ? pricedata[1] : pricedata[2]; // MIN
else
pricestack[depth] = (pricedata[1] < pricedata[2]) ? pricedata[1] : pricedata[2]; // MIN
}
}
if ( pricestack[depth] == 0 )