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#include <QtCore/QTextStream>

#include "lalr.h"

#include "dotgraph.h"

DotGraph::DotGraph(QTextStream &o):

  out (o)

{

}

void DotGraph::operator () (Automaton *aut)

{

  Grammar *g = aut->_M_grammar;

  out << "digraph {" << endl << endl;

  out << "subgraph Includes {" << endl;

  for (Automaton::IncludesGraph::iterator incl = Automaton::IncludesGraph::begin_nodes ();

       incl != Automaton::IncludesGraph::end_nodes (); ++incl)

    {

      for (Automaton::IncludesGraph::edge_iterator edge = incl->begin (); edge != incl->end (); ++edge)

        {

          out << "\t\"(" << aut->id (incl->data.state) << ", " << incl->data.nt << ")\"";

          out << "\t->\t";

          out << "\"(" << aut->id ((*edge)->data.state) << ", " << (*edge)->data.nt << ")\"\t";

          out << "[label=\"" << incl->data.state->follows [incl->data.nt] << "\"]";

          out << endl;

        }

    }

  out << "}" << endl << endl;

  out << "subgraph LRA {" << endl;

  //out << "node [shape=record];" << endl << endl;

  for (StatePointer q = aut->states.begin (); q != aut->states.end (); ++q)

    {

      int state = aut->id (q);

      out << "\t" << state << "\t[shape=record,label=\"{";

      out << "<0> State " << state;

      int index = 1;

      for (ItemPointer item = q->kernel.begin (); item != q->kernel.end (); ++item)

        out << "| <" << index++ << "> " << *item;

      out << "}\"]" << endl;

      for (Bundle::iterator a = q->bundle.begin (); a != q->bundle.end (); ++a)

        {

          const char *clr = g->isTerminal (a.key ()) ? "blue" : "red";

          out << "\t" << state << "\t->\t" << aut->id (*a) << "\t[color=\"" << clr << "\",label=\"" << a.key () << "\"]" << endl;

        }

      out << endl;

    }

  out << "}" << endl;

  out << endl << endl << "}" << endl;

}