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/***************************************************************************
                          DDLVector.cc  -  description
                             -------------------
    begin                : Friday Nov. 21, 2003
    email                : case@ucdhep.ucdavis.edu
 ***************************************************************************/

#include "DetectorDescription/Parser/src/DDLVector.h"

#include "DetectorDescription/Core/interface/DDStrVector.h"
#include "DetectorDescription/Base/interface/DDdebug.h"

#include "DetectorDescription/ExprAlgo/interface/ExprEvalSingleton.h"

// Boost parser, spirit, for parsing the std::vector elements.
#include "boost/spirit/include/classic.hpp"

namespace boost { namespace spirit { namespace classic { } } } using namespace boost::spirit::classic;

using namespace boost::spirit;

struct VectorMakeDouble
{
  void operator() (char const* str, char const* end) const
    {
      ddlVector_->do_makeDouble(str, end);
    }
  
  VectorMakeDouble() {
    ddlVector_ = dynamic_cast < DDLVector* > (DDLGlobalRegistry::instance().getElement("Vector"));
  }
  
  DDLVector * ddlVector_;
};

struct VectorMakeString
{
  void operator() (char const* str, char const* end) const
    {
      ddlVector_->do_makeString(str, end);
    }
  
  VectorMakeString() {
    ddlVector_ = dynamic_cast < DDLVector* > (DDLGlobalRegistry::instance().getElement("Vector"));
  }
  
  DDLVector * ddlVector_;
};

bool
DDLVector::parse_numbers(char const* str) const
{
  static VectorMakeDouble makeDouble;
  return parse(str,
               ((+(anychar_p - ','))[makeDouble] 
                >> *(',' >> (+(anychar_p - ','))[makeDouble]))
               >> end_p
               , space_p).full;
}

bool
DDLVector::parse_strings(char const* str) const
{
  static VectorMakeString makeString;
  return parse(str,
               ((+(anychar_p - ','))[makeString] 
                >> *(',' >> (+(anychar_p - ','))[makeString])) 
               >> end_p
               , space_p).full;
}

DDLVector::DDLVector( DDLElementRegistry* myreg )
  : DDXMLElement( myreg )
{}

DDLVector::~DDLVector( void )
{}
 
void
DDLVector::preProcessElement( const std::string& name, const std::string& nmspace, DDCompactView& cpv )
{
  pVector.clear();
  pStrVector.clear();
  pNameSpace = nmspace;
}

void
DDLVector::processElement( const std::string& name, const std::string& nmspace, DDCompactView& cpv )
{
  DCOUT_V('P', "DDLVector::processElement started");

  DDXMLAttribute atts = getAttributeSet();
  bool isNumVec((atts.find("type") == atts.end() 
                 || atts.find("type")->second == "numeric")
                ?  true : false);
  bool isStringVec((!isNumVec && atts.find("type") != atts.end() 
                    && atts.find("type")->second == "string")
                   ? true : false);
  std::string tTextToParse = getText();
  //  cout << "tTextToParse is |"<< tTextToParse << "|" << endl;
  if (tTextToParse.size() == 0) {
    errorOut(" EMPTY STRING ");
  }
  
  if (isNumVec) {//(atts.find("type") == atts.end() || atts.find("type")->second == "numeric") {
    if (!parse_numbers(tTextToParse.c_str())) {
      errorOut(tTextToParse.c_str());
    }
  }
  else if (isStringVec) { //(atts.find("type")->second == "string") {
    if (!parse_strings(tTextToParse.c_str())) {
      errorOut(tTextToParse.c_str());
    }
  }
  else {
    errorOut("Unexpected std::vector type. Only \"numeric\" and \"string\" are allowed.");
  }


  if (parent() == "Algorithm" || parent() == "SpecPar")
  {
    if (isNumVec) { //(atts.find("type") != atts.end() || atts.find("type")->second == "numeric") {
      //        std::cout << "adding to pVecMap name= " << atts.find("name")->second << std::endl;
      //        for (std::vector<double>::const_iterator it = pVector.begin(); it != pVector.end(); ++it)
      //          std::cout << *it << "\t" << std::endl;
      pVecMap[atts.find("name")->second] = pVector;
      //        std::cout << "size: " << pVecMap.size() << std::endl;
    }
    else if (isStringVec) { //(atts.find("type")->second == "string") {
      pStrVecMap[atts.find("name")->second] = pStrVector;
      //        cout << "it is a string, name is: " << atts.find("name")->second << endl;
    }
    size_t expNEntries = 0;
    if (atts.find("nEntries") != atts.end()) {
      std::string nEntries = atts.find("nEntries")->second;
      expNEntries = size_t (ExprEvalSingleton::instance().eval(pNameSpace, nEntries));
    }
    if ( (isNumVec && pVector.size() != expNEntries)
         || (isStringVec && pStrVector.size() != expNEntries) )
    {
      std::string msg ("Number of entries found in Vector text does not match number in attribute nEntries.");
      msg += "\n\tnEntries = " + atts.find("nEntries")->second;
      msg += "\n------------------text---------\n";
      msg += tTextToParse;
      msg += "\n------------------text---------\n";
      errorOut(msg.c_str());
    }
  }
  else if (parent() == "ConstantsSection" || parent() == "DDDefinition")
  {
    if (atts.find("type") == atts.end() || atts.find("type")->second == "numeric") {
      DDVector v(getDDName(nmspace), new std::vector<double>(pVector));
    }
    else {
      DDStrVector v(getDDName(nmspace), new std::vector<std::string>(pStrVector));
    }
  }
  clear();
  DCOUT_V('P', "DDLVector::processElement completed");
}

ReadMapType< std::vector<double> > &
DDLVector::getMapOfVectors( void ) 
{
  return pVecMap;
}

ReadMapType< std::vector<std::string> > &
DDLVector::getMapOfStrVectors( void )
{
  return pStrVecMap;
}

void
DDLVector::do_makeDouble( char const* str, char const* end )
{
  std::string ts(str, end);
  double td = ExprEvalSingleton::instance().eval(pNameSpace, ts);
  pVector.push_back(td);
}

void
DDLVector::do_makeString( char const* str, char const* end )
{
  std::string ts(str, end);
  pStrVector.push_back(ts);
}

void
DDLVector::errorOut( const char* str ) const
{
  std::string e("Failed to parse the following: \n");
  e+= std::string(str);
  e+="\n as a Vector element (comma separated list).";
  throwError (e);
}

void
DDLVector::clearall( void )
{
  DDXMLElement::clear();
  pVecMap.clear();
  pStrVecMap.clear();
}