/**
 * @module cprogram
 * @author Guenther Neuwirth (0626638), Manuel Mausz (0728348)
 * @brief  class for parsing and saving a program
 * @date   11.05.2009
 */

#include <fstream>
#include <vector>
#include <string>
#include <boost/tokenizer.hpp>
#include <boost/algorithm/string.hpp>
#include <boost/algorithm/string/split.hpp>
#include "cprogram.h"



using namespace std;
using namespace boost;

CProgram::CProgram(const std::string& progfile) :
	m_programfile(progfile)
{
	parse();
	dump(std::cout);   
 
}

/*----------------------------------------------------------------------------*/

CProgram::~CProgram()
{

}



/*----------------------------------------------------------------------------*/

void CProgram::parse()
{
	 /* open and read file */
  ifstream file(m_programfile.c_str(), ios::in);
 // if (!file)
   // throw ParserError("Unable to open scriptfile '" + m_scriptfile + "'.");
	
	int cur_line_nr = 0;
	
  while (!file.eof() && file.good())
  {
  	string cur_line;
  	
    /* read file per line */
    getline(file, cur_line);
    if (cur_line.empty())
      continue;

    trim(cur_line);

    /* ignore comments */
    if (cur_line.find_first_of('#') == 0)
      continue;

		/*remove commas from current line */
		unsigned int pos;
		while (( pos = cur_line.find_first_of(",") ) != string::npos)
			 cur_line.erase(pos, 1);
		
		/* add source line*/
		m_progsource.push_back(vector<string>());
  	algorithm::split( m_progsource.back(), cur_line, is_any_of(" \t"));
  	
  	/* jump addr as line number */
  	if(m_progsource[cur_line_nr][0] == "label")
  	{
  		int size = m_progsource[cur_line_nr][01].size() - 1;
  		string label(m_progsource[cur_line_nr][01].substr(0, size));
  		m_jumpaddr[label] = cur_line_nr;
  	}
  	
		cur_line_nr++;
  }
  file.close();

}

/*----------------------------------------------------------------------------*/

#ifdef DEBUG
void CProgram::dump(std::ostream& out)
{
	
	out << endl << "Program file:" << endl << m_programfile << endl;
	
	out << endl 	<< "Program source:" << endl;
	for (int i = 0; i < (int) m_progsource.size();i++)
  {
		for(int x = 0; x < (int) m_progsource[i].size();x++)
  		out << m_progsource[i][x] << " ";
  	out << std::endl;
  }
  
  out << endl 	<< "Jump addresses:" << endl;
  map<string, unsigned int>::iterator it;
	for (it = m_jumpaddr.begin(); it != m_jumpaddr.end(); it++)
		out << (*it).first << "  " <<  (*it).second << endl;
  
}
#endif