print_doc.hpp

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#ifndef MLPACK_BINDINGS_R_PRINT_DOC_HPP
#define MLPACK_BINDINGS_R_PRINT_DOC_HPP

#include "get_r_type.hpp"
#include <mlpack/prereqs.hpp>
#include <mlpack/core/util/hyphenate_string.hpp>

namespace mlpack {
namespace bindings {
namespace r {

template<typename T>
void PrintDoc(util::ParamData& d,
              const void* /* input */,
              void* output)
{
  bool out = *((bool*) output);
  std::ostringstream oss;
  if (out)
    oss << "#' \\item{" << d.name << "}{";
  else
    oss << "#' @param " << d.name << " ";
  oss << d.desc.substr(0, d.desc.size() - 1);
  // Print a default, if possible.
  if (!d.required)
  {
    if (d.cppType == "std::string" ||
        d.cppType == "double" ||
        d.cppType == "int" ||
        d.cppType == "bool")
    {
      oss << ".  Default value \"";
      if (d.cppType == "std::string")
      {
        oss << boost::any_cast<std::string>(d.value);
      }
      else if (d.cppType == "double")
      {
        oss << boost::any_cast<double>(d.value);
      }
      else if (d.cppType == "int")
      {
        oss << boost::any_cast<int>(d.value);
      }
      else if (d.cppType == "bool")
      {
        oss << (boost::any_cast<bool>(d.value) ? "TRUE" : "FALSE");
      }
      oss << "\"";
    }
  }

  oss << " (" << GetRType<typename std::remove_pointer<T>::type>(d) << ").";

  if (out)
    oss << "}";

  MLPACK_COUT_STREAM << util::HyphenateString(oss.str(), "#'   ");
}

} // namespace r
} // namespace bindings
} // namespace mlpack

#endif