efl/src/lib/eolian_cxx/grammar/type_generator.hh

#ifndef EOLIAN_CXX_GRAMMAR_TYPE_GENERATOR_HH
#define EOLIAN_CXX_GRAMMAR_TYPE_GENERATOR_HH

#include <ostream>
#include <iosfwd>

#include "eo_types.hh"
#include "namespace_generator.hh"

namespace efl { namespace eolian { namespace grammar {

using std::endl;

struct full_name
{
   eo_class const& _cls;
   bool _from_global;
   full_name(eo_class const& cls, bool from_global = true)
     : _cls(cls), _from_global(from_global) {}
};

inline std::ostream&
operator<<(std::ostream& out, full_name const& x)
{
   if (x._from_global)
     out << "::";
   if(!x._cls.name_space.empty())
     out << x._cls.name_space << "::";
   return out << x._cls.name;
}

struct abstract_full_name
{
   eo_class const& _cls;
   bool _from_golbal;
   abstract_full_name(eo_class const& cls, bool from_golbal = true)
     : _cls(cls), _from_golbal(from_golbal) {}
};

inline std::ostream&
operator<<(std::ostream& out, abstract_full_name const& x)
{
   if (x._from_golbal)
     out << "::";
   return out << abstract_namespace << full_name(x._cls);
}

struct name_upper
{
   eo_class const& _cls;
   name_upper(eo_class const& cls)
     : _cls(cls) {}
};

inline std::ostream&
operator<<(std::ostream& out, name_upper const& x)
{
   std::string key = x._cls.name;
   std::transform(key.begin(), key.end(), key.begin(), ::toupper);
   return out << key;
}

struct c_type
{
   eolian_type_instance const& _list;
   c_type(eolian_type_instance const& list)
     : _list(list)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, efl::eolian::grammar::c_type const& x)
{
   assert(x._list.size() > 0);
   std::string res;
   for (auto rit = x._list.parts.rbegin(), last = x._list.parts.rend(); rit != last; ++rit)
     {
       res = /*type_is_binding(*rit) ? (*rit).binding :*/ (*rit).native;
     }
   assert(!res.empty());
   return out << res;
}

struct reinterpret_type
{
   eolian_type_instance const& _type;
   reinterpret_type(eolian_type_instance const& type)
     : _type(type)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, efl::eolian::grammar::reinterpret_type const& x)
{
   assert(x._type.size() > 0);
   std::string res;
   for (auto rit = x._type.parts.rbegin(), last = x._type.parts.rend(); rit != last; ++rit)
     {
        eolian_type const& t = *rit;
        if (type_is_complex(t))
          res = t.binding + "< " + res + " >";
        else
          res = type_is_binding(t) ? t.binding
                                   : t.native;
     }
   assert(!res.empty());

   if (type_is_binding(x._type.front()))
     {
        if (x._type.is_out)
          res += "*";
        else if (!x._type.is_nonull && x._type.front().binding_requires_optional)
          res = "::efl::eina::optional< " + res + " >";
     }

   return out << res;
}

struct type_ownership
{
   eolian_type_instance const& _type;
   type_ownership(eolian_type_instance const& type)
     : _type(type)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, type_ownership const& x)
{
   out << "std::tuple<";
   for (auto it=x._type.parts.begin(), last=x._type.parts.end(); it != last; ++it)
     {
        if (it != x._type.parts.begin())
          out << ", ";
        out << ((*it).is_own ? "std::true_type" : "std::false_type");
     }
   return out << ">()";
}

struct
template_parameter_type
{
   eolian_type_instance const& _type;
   std::string const& _name;
   template_parameter_type(eolian_type_instance const& type, std::string const& name)
     : _type(type)
     , _name(name)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, template_parameter_type const& x)
{
   return out << "F_" << x._name;
}

struct
parameter_type
{
   eolian_type_instance const& _type;
   std::string const& _name;
   parameter_type(eolian_type_instance const& t, std::string const& name)
     : _type(t)
     , _name(name)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, parameter_type const& x)
{
   if(type_is_callback(x._type))
      out << template_parameter_type(x._type, x._name);
   else
      out << reinterpret_type(x._type);
   return out;
}

struct
parameter_no_ref_type
{
   eolian_type_instance const& _type;
   std::string const& _name;
   parameter_no_ref_type(eolian_type_instance const& type, std::string const& name)
     : _type(type)
     , _name(name)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, parameter_no_ref_type const& x)
{
   return out << "_no_ref_" << parameter_type(x._type, x._name);
}

struct
parameter_remove_reference_typedef
{
   eolian_type_instance const& _type;
   std::string const& _name;
   parameter_remove_reference_typedef(eolian_type_instance const& type, std::string const& name)
     : _type(type)
     , _name(name)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, parameter_remove_reference_typedef const& x)
{
   out << "typedef typename std::remove_reference<"
       << parameter_type(x._type, x._name)
       << ">::type " << parameter_no_ref_type(x._type, x._name) << ";";
   return out;
}

struct to_cxx
{
   eolian_type_instance const& _type;
   std::string const& _varname;
   to_cxx(eolian_type_instance const& type, std::string const& varname)
     : _type(type), _varname(varname)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, to_cxx const& x)
{
   if (type_is_binding(x._type))
     {
        out << "::efl::eolian::to_cxx<"
            << reinterpret_type(x._type)
            << ">(" << x._varname
            << ", " << type_ownership(x._type) << ")";
     }
   else
     out << x._varname;
   return out;
}

struct to_c
{
   eolian_type_instance const& _type;
   std::string const& _varname;
   to_c(eolian_type_instance const& type, std::string const& varname)
     : _type(type), _varname(varname)
   {}
};

inline std::ostream&
operator<<(std::ostream& out, to_c const& x)
{
   if (type_is_callback(x._type))
     out << "::efl::eolian::get_callback<" << type_to_native_str(x._type)
         << ", " << parameter_no_ref_type(x._type, x._varname) << " >()";
   else if (type_is_complex(x._type) && type_is_binding(x._type))
     out << "::efl::eolian::to_native<" << c_type(x._type) << ">(" << x._varname << ")";
   else if (type_is_binding(x._type))
     out << "::efl::eolian::to_c(" << x._varname << ")";
   else
     out << x._varname;
   return out;
}

} } }

#endif // EOLIAN_CXX_GRAMMAR_TYPE_GENERATOR_HH