rw.hxx

// rw.hxx: this file is part of the Vaucanson project.
//
// Vaucanson, a generic library for finite state machines.
//
// Copyright (C) 2007, 2008 The Vaucanson Group.
//
// This program is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public License
// as published by the Free Software Foundation; either version 2
// of the License, or (at your option) any later version.
//
// The complete GNU General Public Licence Notice can be found as the
// `COPYING' file in the root directory.
//
// The Vaucanson Group consists of people listed in the `AUTHORS' file.
//

#ifndef VCSN_XML_CONTEXTS_RW_HXX
# define VCSN_XML_CONTEXTS_RW_HXX

# include <vaucanson/xml/builders.hh>

namespace vcsn
{
  namespace xml
  {
    template <typename T>
    SeriesSemiringHandler<T>::SeriesSemiringHandler (xercesc::SAX2XMLReader* parser,
                                               Handler& root,
                                               T& semiring)
    : Handler(parser, root),
      semiring_(semiring),
      ssemiringh_(0),
      monoidh_(0),
      unsuph_(parser, *this)
    {
    }

    template <typename T>
    void
    SeriesSemiringHandler<T>::start (const XMLCh* const,
                                 const XMLCh* const localname,
                                 const XMLCh* const,
                                 const xercesc::Attributes& attrs)
    {
      if (xercesc::XMLString::equals(eq_.semiring, localname))
      {
        ssemiringh_ = builders::create_semiringh(semiring_.semiring(), attrs, parser_, *this);
        parser_->setContentHandler(ssemiringh_);
      }
      else if (xercesc::XMLString::equals(eq_.monoid, localname))
      {
        monoidh_ = builders::create_monoidh(const_cast <typename T::monoid_t&>(semiring_.monoid()), attrs, parser_, *this);
        parser_->setContentHandler(monoidh_);
      }
      else
        error::token(localname);
    }

    template <typename T>
    void
    SeriesSemiringHandler<T>::end (const XMLCh* const,
                               const XMLCh* const localname,
                               const XMLCh* const)
    {
      if (xercesc::XMLString::equals(eq_.semiring, localname))
        parser_->setContentHandler(&root_);
      else
        error::token(localname);
      delete ssemiringh_;
      delete monoidh_;
    }

    namespace builders
    {
      template <typename S, typename T>
      typename TRANStype::semiring_t*
      create_semiring (TRANStype&,
                       const XMLCh* const,
                       const xercesc::Attributes&)
      {
        typename TRANStype::semiring_t::monoid_t::alphabet_t    at;
        typename TRANStype::semiring_t::monoid_t        md(at);
        typename TRANStype::semiring_t::semiring_t      ssg;
        typedef typename TRANStype::semiring_t semiring_t;
        semiring_t*     semiring = new semiring_t(ssg, md);

        return semiring;
      }

      template <typename S, typename T>
      Handler*
      create_semiringh(TRANSsemiring& semiring,
                       const xercesc::Attributes&,
                       xercesc::SAX2XMLReader* parser,
                       Handler& root)
      {
        return new SeriesSemiringHandler<TRANSsemiring >(parser, root, semiring);
      }

    } // !builders

    namespace builders
    {
      template <typename S, typename T>
      const char* get_semiring_operations(const vcsn::algebra::Series<S, T>&)
      {
        return "SHOULD not append";
      }
    } // !builders

    namespace builders
    {
      template <typename S, typename T>
      void
      create_semiring_node(const TRANStype& aut,
                           xercesc::DOMDocument* doc,
                           xercesc::DOMElement* root)
      {
        xercesc::DOMElement* node = tools::create_element(doc, "semiring");
        tools::set_attribute(node, "type", "series");
        xercesc::DOMElement* semiringn = tools::create_element(doc, "semiring");
        xercesc::DOMElement* monoid = tools::create_element(doc, "monoid");

        typedef typename TRANStype::semiring_elt_t::semiring_elt_t semiring_elt_t;
        semiring_elt_t semiring;
        tools::set_attribute(semiringn, "set", get_semiring_set(semiring.value()));
        tools::set_attribute(semiringn, "operations", get_semiring_operations(semiring.structure()));

        tools::set_attribute(monoid, "type", "free");
        tools::set_attribute(monoid, "genDescrip", "enum");
        tools::set_attribute(monoid, "genKind", algebra::letter_traits<typename TRANStype::semiring_t::monoid_t::alphabet_t::letter_t>::kind());
        typedef typename TRANStype::semiring_t::monoid_t::alphabet_t::const_iterator alphabet_iterator;
        for_all_letters(l, aut.structure().series().semiring().monoid().alphabet())
        {
          std::ostringstream letter;
          xercesc::DOMElement* gen = tools::create_element(doc, "monGen");
          letter << *l;
          tools::set_attribute(gen, "value", letter.str());
          monoid->appendChild(gen);
        }
        tools::set_attribute(monoid, "genSort", get_monoid_gen_sort(*(aut.structure().series().semiring().monoid().alphabet().begin())));
        node->appendChild(semiringn);
        node->appendChild(monoid);
        root->appendChild(node);
      }
    }

    SParamTRANS
    WeightHandler<TRANSseries >::WeightHandler (xercesc::SAX2XMLReader* parser,
                               Handler& root,
                               TRANSseries param)
      : RegexpHandler<TRANSseries >(parser, root, param),
        weighth_(0)
    {
      end_ = eq_.weight;
    }

    SParamTRANS
    void
    WeightHandler<TRANSseries >::start (const XMLCh* const,
                                 const XMLCh* const localname,
                                 const XMLCh* const,
                                 const xercesc::Attributes&)
    {
      //RegexpHandler<series_set_elt_t>* tmp = new RegexpHandler<series_set_elt_t>(parser_, *this,
//        algebra::identity_as<typename series_set_elt_t::value_t>::of(param_.structure().semiring()));
      if (!(weighth_ = create_weighth(localname)))
        error::token(localname);
      else
        parser_->setContentHandler(weighth_);
    }

    SParamTRANS
    void
    WeightHandler<TRANSseries >::end (const XMLCh* const,
                               const XMLCh* const localname,
                               const XMLCh* const)
    {

      using namespace xercesc;
      if (XMLString::equals(end_, localname))
      {
        TRANSseries s = algebra::identity_as<typename TRANSseries::value_t>::of(param_.structure());
        typename TRANSseries::semiring_elt_t w(weighth_->series());
        param_ = param_ * w;

        parser_->setContentHandler(&root_);
        delete weighth_;
      }
      else
        error::token(localname);
    }

    SParamTRANS
    RegexpHandler<typename WeightHandler<TRANSseries >::series_set_elt_t>*
    WeightHandler<TRANSseries >::create_weighth (const XMLCh* const localname)
    {
      using namespace xercesc;
      series_set_elt_t elt(param_.structure().semiring());

      if (XMLString::equals(eq_.monElmt, localname))
        return builders::create_monElmth(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()));
      else if (XMLString::equals(eq_.star, localname))
        return new StarHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()));
      else if (XMLString::equals(eq_.leftExtMul, localname))
        return new ExtMulHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()), true);
      else if (XMLString::equals(eq_.rightExtMul, localname))
        return new ExtMulHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()), false);
      else if (XMLString::equals(eq_.sum, localname))
        return new SumHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()));
      else if (XMLString::equals(eq_.product, localname))
        return new ProductHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()));
      else if (XMLString::equals(eq_.one, localname))
        return new AtomHandler<series_set_elt_t>(parser_, *this, algebra::identity_as<typename series_set_elt_t::value_t>::of(elt.structure()), eq_.one);
      else if (XMLString::equals(eq_.zero, localname))
        return new AtomHandler<series_set_elt_t>(parser_, *this, algebra::zero_as<typename series_set_elt_t::value_t>::of(elt.structure()), eq_.zero);
      else
        return 0;
    }

    namespace builders
    {
      SParamTRANS
      RegexpHandler<TRANSseries >*
      create_weighth(xercesc::SAX2XMLReader* parser,
                     RegexpHandler<TRANSseries >& root,
                     TRANSseries param,
                     const xercesc::Attributes&)
      {
        return new WeightHandler<TRANSseries >(parser, root, param);
      }
    } // !builders
  } // !xml
} // !vcsn

#endif // !VCSN_XML_CONTEXTS_RW_HXX

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