#include <eqpalg/exp_macro/min_diff.h>
#include <string>

std::string replace_min_diff_macro(std::string&& exp_str) {
  boost::regex base_regex("min_diff\\((\\d+),(\\d+)\\)");
  std::string plv;
  std::stringstream ss;
  ss << "(";
  for (auto i = 0; i < 2; i++) {
    ss << "min(abs(pv$1_" << i << "-pv$2_0"
       << "),";
  }
  ss << "abs(pv$1_2 - pv$2_0)";
  ss << ")))";
  plv = ss.str();
  auto ret = boost::regex_replace(exp_str, base_regex, plv);
  return ret;
}