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// file : odb/tracer/header.cxx
// author : Boris Kolpackov <boris@codesynthesis.com>
// copyright : Copyright (c) 2009-2010 Code Synthesis Tools CC
// license : GNU GPL v2; see accompanying LICENSE file
#include <odb/common.hxx>
#include <odb/tracer/header.hxx>
namespace tracer
{
namespace
{
struct class_: traversal::class_, context
{
class_ (context& c)
: context (c)
{
}
virtual void
traverse (type& c)
{
if (c.file () != unit.file ())
return;
if (!c.count ("object"))
return;
string const& type (c.fq_name ());
// Find the id member and type.
//
id_member t;
t.traverse (c);
if (t.member () == 0)
{
cerr << c.file () << ":" << c.line () << ":" << c.column () << ":"
<< " error: no data member designated as object id" << endl;
cerr << c.file () << ":" << c.line () << ":" << c.column () << ":"
<< " info: use '#pragma odb id' to specify object id member"
<< endl;
throw generation_failed ();
}
semantics::data_member& id (*t.member ());
semantics::type& id_type (id.type ());
if (id_type.anonymous ())
{
// Can be a template-id (which we should handle eventually) or an
// anonymous type in member declaration (e.g., struct {...} m_;).
//
cerr << id.file () << ":" << id.line () << ":" << id.column () << ":"
<< " error: unnamed type in data member declaration" << endl;
cerr << id.file () << ":" << id.line () << ":" << id.column () << ":"
<< " info: use 'typedef' to name this type"
<< endl;
throw generation_failed ();
}
os << "// " << c.name () << endl
<< "//" << endl;
os << "template <>" << endl
<< "class access::object_traits< " << type << " >: " << endl
<< " public access::object_memory< " << type << " >," << endl
<< " public access::object_factory< " << type << " >"
<< "{"
<< "public:" << endl;
// object_type & shared_ptr
//
os << "typedef " << type << " object_type;";
// id_type
//
os << "typedef " << id_type.fq_name () << " id_type;"
<< endl;
// type_name ()
//
os << "static const char*" << endl
<< "type_name ();"
<< endl;
// id ()
//
os << "static id_type" << endl
<< "id (const object_type&);"
<< endl;
// persist ()
//
os << "static void" << endl
<< "persist (database&, object_type&);"
<< endl;
// store ()
//
os << "static void" << endl
<< "store (database&, object_type&);"
<< endl;
// erase ()
//
os << "static void" << endl
<< "erase (database&, const id_type&);"
<< endl;
// find ()
//
os << "static pointer_type" << endl
<< "find (database&, const id_type&);"
<< endl;
os << "static bool" << endl
<< "find (database&, const id_type&, object_type&);";
os << "};";
}
};
}
void
generate_header (context& ctx)
{
traversal::unit unit;
traversal::defines unit_defines;
traversal::namespace_ ns;
class_ c (ctx);
unit >> unit_defines >> ns;
unit_defines >> c;
traversal::defines ns_defines;
ns >> ns_defines >> ns;
ns_defines >> c;
ctx.os << "#include <odb/core.hxx>" << endl
<< "#include <odb/traits.hxx>" << endl
<< endl;
ctx.os << "namespace odb"
<< "{";
unit.dispatch (ctx.unit);
ctx.os << "}";
}
}
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