name_mangler.cpp

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/*******************************************************************\
 
Module: Name mangling
 
Author: Kareem Khazem <karkhaz@karkhaz.com>, 2019
 
\*******************************************************************/
 
#include "name_mangler.h"
 
#include <util/get_base_name.h>
 
#include <cstdint>
#include <iomanip>
#include <sstream>
 
irep_idt file_name_manglert::
operator()(const symbolt &src, const std::string &extra_info)
{
  std::string basename = get_base_name(src.location.get_file().c_str(), false);
 
  std::stringstream ss;
  ss << FILE_LOCAL_PREFIX;
  ss << std::regex_replace(
          std::regex_replace(basename, forbidden, "_"), multi_under, "_")
     << "_";
 
  if(extra_info != "")
    ss << extra_info << "_";
  ss << src.name;
  return irep_idt(ss.str());
}
 
irep_idt djb_manglert::
operator()(const symbolt &src, const std::string &extra_info)
{
  char const *str = src.location.get_working_directory().c_str();
  unsigned long hash = 5381;
  int c;
  while((c = *str++))
    hash = ((hash << 5) + hash) + c;
 
  uint32_t eight_nibble_hash = (uint32_t)hash;
 
  std::stringstream ss;
  ss << FILE_LOCAL_PREFIX << std::setfill('0') << std::setw(8) << std::hex
     << eight_nibble_hash << "_" << extra_info << "_" << src.name;
  return irep_idt(ss.str());
}