C++ symbol类代码示例

typename boost::enable_if<boost::is_same<T, typename U::value_type>, void>::type
copy(symbol<T[]> const& src, U& dst)
{
    function_requires<RandomAccessContainerConcept<U> >();
    assert(typename U::difference_type(src.size()) == (dst.end() - dst.begin()));
    CUDA_CALL(cudaMemcpyFromSymbol(&*dst.begin(), reinterpret_cast<char const*>(src.data()), src.size() * sizeof(T), 0, cudaMemcpyDeviceToHost));
}

// copy all symbol data from another symbol into a symbol from list
void reel::copySymbol(symbol temp, int offset)
{
 // set the name of the symbol offset from the base of the list to the name of temp
 list[offset].setName(temp.getName());
 // set the value of the symbol offset from the base of the list to the value of temp
 list[offset].setValue(temp.getValue());
};

 bool split_name(symbol const& name, symbol & prefix, symbol & suffix) const {
     if (name.is_numerical()) return false;
     char const* str = name.bare_str();
     char const* period = strchr(str,'.');
     if (!period) return false;
     svector<char> prefix_((unsigned)(period-str), str);
     prefix_.push_back(0);
     prefix = symbol(prefix_.c_ptr());
     suffix = symbol(period + 1);
     return true;
 }

symbol 
Path::nodir (symbol name_s)
{
  const std::string name = name_s.name ();
  size_t start = name.size ();

  for (;start > 0; start--)
    {
      const char prev = name[start-1];

      if (prev == '/')
	break;
      
#if !defined (__unix) 
      if (prev == '\\' || prev == ':')
	break;
#endif // !unix
    }
  
  std::string result;

  for (;start < name.size (); start++)
    result += name[start];

  return result;
}

static unsigned pp_symbol(std::ostream & out, symbol const & s) {
    if (is_smt2_quoted_symbol(s)) {
        std::string str = mk_smt2_quoted_symbol(s);
        out << str;
        return static_cast<unsigned>(str.length());
    }
    else if (s.is_numerical()) {
        std::string str = s.str();
        out << str;
        return static_cast<unsigned>(str.length());
    }
    else {
        out << s.bare_str();
        return static_cast<unsigned>(strlen(s.bare_str()));
    }
}

symbol_distribution::symbol_distribution(const symbol &s)
: total_frequencies(1) {
	for (int i = 0; i < ARITHMETIC_SYMBOL_COUNT; i++) {
		frequencies[i] = 0u;
	}
	frequencies[s.get_sequential_code()] = 1u;
}

bool 
Path::set_directory (symbol directory_s)
{ 
  const std::string& directory = directory_s.name ();
  const char *const dir = directory.c_str ();
  const bool result 
    = chdir (dir) == 0 || (mkdir (dir, 0777) == 0 && chdir (dir) == 0); 
  
  if (!result)
    /* Do nothing */;
  else if (directory[0] == '/'
#ifndef __unix__
           || directory[0] == '\\' || directory[1] == ':'
#endif
           )
    // Already absolute.
    current_directory = directory;
  else
    // Make it absolute.
    current_directory = get_cwd ();

  std::ostringstream tmp;
  tmp << "Changing directory to '" << directory << "' " 
      << (result ? "success" : "failure");
  Assertion::debug (tmp.str ());

  return result;
}

std::auto_ptr<std::istream> 
Path::open_file (symbol name_s) const
{
  const std::string& name = name_s.name ();

  struct Message : std::ostringstream 
  {
    ~Message ()
    { Assertion::debug (this->str ()); }
  } tmp;
  tmp << "In directory '" << get_directory () << "':";

  std::auto_ptr<std::istream> in;

  // Absolute filename.
  if (name[0] == '.' || name[0] == '/'
#ifndef __unix__
      || name[0] == '\\' || name[1] == ':'
#endif
      )
    {
      tmp << "\nOpening absolute file name '" << name << "'";
      in.reset (new std::ifstream (name.c_str ()));
      return in;
    }

  tmp << "\nLooking for file '" << name << "'";

  // Look in path.
  for (unsigned int i = 0; i < path.size (); i++)
    {
      const symbol dir = (path[i] == "." ? current_directory : path[i]);
      const symbol file = dir + DIRECTORY_SEPARATOR + name;
      tmp << "\nTrying '" << file << "'";
      if (path[i] == ".")
	tmp << " (cwd)";
      in.reset (new std::ifstream (file.name ().c_str ()));
      if (in->good ())
	{
	  tmp << " success!";
	  return in;
	}
    }
  tmp << "\nGiving up";
  daisy_assert (in.get ());		
  return in;			// Return last bad stream.
}

 std::string ensure_quote(symbol const& s) {
     std::string str;
     if (is_smt2_quoted_symbol(s))
         str = mk_smt2_quoted_symbol(s);
     else
         str = s.str();
     return str;
 }

void 
PrinterFile::Implementation::print_object (const FrameModel& value,
                                           const Library& library, 
                                           const FrameModel *const original, 
                                           int indent)
{
  const symbol element = value.type_name ();
  if (!library.check (element))
    {
      out << "<unknown " << element << ">";
      return;
    }

  // Check original.
  if (original && original->type_name () == element)
    {
      out << "original";
      // Check if we added something over the original.
      if (value.subset (metalib, *original))
        return;
      out << " ";
      print_alist (value, original, indent + 9, false);
      return;

    }
  
  const FrameModel& element_frame = library.model (element);
  
  // Check if we added something over the library.
  if (value.subset (metalib, element_frame))
    {
      // We didn't.
      print_symbol (element);
      return;
    }

  // Library element with additional attributes.
  print_symbol (element);
  out << " ";
  print_alist (value, &element_frame,
               indent + 1 + element.name ().length ()
               // Buglet: Wrong indentation for elements with strange chars.
               + (is_identifier (element.name ()) ? 0 : 2),
               false);
}

double symbol_distribution::get_accumulated_probability(const symbol &s) const {
	double result = 0.0;
	for (unsigned int i = 0; i < s.get_sequential_code(); i++) {
		result +=
				static_cast<double>(frequencies[i]) /
				static_cast<double>(total_frequencies);
	}
	return result;
}

void 
ChemistryMulti::check_ignore (const symbol chem, Treelog& msg)
{
  if (ignored (chem))
    return;
  
  msg.message ("Fate of '" + chem.name () + "' will not be traced");
  ignore.push_back (chem);
}

 void set_next_arg(cmd_context & ctx, symbol const & s) override {
     cmd * c = ctx.find_cmd(s);
     if (c == nullptr) {
         std::string err_msg("unknown command '");
         err_msg = err_msg + s.bare_str() + "'";
         throw cmd_exception(std::move(err_msg));
     }
     m_cmds.push_back(s);
 }

 virtual void set_next_arg(cmd_context & ctx, symbol const & s) {
     cmd * c = ctx.find_cmd(s);
     if (c == 0) {
         std::string err_msg("unknown command '");
         err_msg = err_msg + s.bare_str() + "'";
         throw cmd_exception(err_msg);
     }
     m_cmds.push_back(s);
 }

void
DestinationTable::initialize (const symbol log_dir, const symbol objid,
                              const symbol description, const Volume& volume,
                              const std::vector<std::pair<symbol, symbol>/**/>&
                              /**/ parameters)
{
  const std::string fn = log_dir.name () + file.name ();
  out.open (fn.c_str ());

  print_header.start (out, objid, file, parsed_from_file);

  for (size_t i = 0; i < parameters.size (); i++)
    print_header.parameter (out, parameters[i].first, parameters[i].second);

  print_header.interval (out, volume);
  print_header.log_description (out, description);

  out.flush ();
}