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//=============================================================================
/**
* @file connector_dds_ex_base.cpp
*
* Base class for visitors generating code for DDS Connectors in
* the exec impl.
*
* @author Jeff Parsons
*/
//=============================================================================
#include "connector.h"
#include "ast_structure.h"
#include "ast_typedef.h"
#include "ast_template_module.h"
#include "ast_template_module_ref.h"
#include "ast_native.h"
#include "utl_strlist.h"
#include "utl_string.h"
#include "fe_extern.h"
be_visitor_connector_dds_ex_base::be_visitor_connector_dds_ex_base (
be_visitor_context *ctx)
: be_visitor_component_scope (ctx),
t_inst_ (0),
t_ref_ (0),
t_params_ (0),
base_tname_ (0)
{
}
be_visitor_connector_dds_ex_base::~be_visitor_connector_dds_ex_base (
void)
{
}
bool
be_visitor_connector_dds_ex_base::begin (be_connector *node)
{
node_ = node;
this->process_template_args (node);
AST_Connector *base = node;
while (this->t_args_.is_empty () && base != 0)
{
this->process_template_args (base);
base = base->base_connector ();
}
if (this->t_args_.is_empty ())
{
return false;
}
/// Use 'CIAO_' + component's flat name.
os_ << be_nl_2
<< "namespace CIAO_" << node->flat_name ()
<< "_Impl" << be_nl
<< "{" << be_idt;
this->base_tname_ = node->local_name ();
return true;
}
bool
be_visitor_connector_dds_ex_base::is_dds_type (
be_connector *node, AST_Decl *d)
{
bool result = false;
AST_Connector* base = node->base_connector ();
if (base)
{
while (base->base_connector () != 0)
{
base = base->base_connector ();
}
const char* lname = base->local_name ()->get_string ();
if (ACE_OS::strcmp (lname, "DDS_Base") == 0)
{
AST_Structure *s = dynamic_cast<AST_Structure*> (d);
if (s == 0)
{
AST_Typedef *td = dynamic_cast<AST_Typedef*> (d);
if (td != 0)
{
s = dynamic_cast<AST_Structure*> (td->primitive_base_type ());
}
}
if (s)
{
result = true;
}
}
}
return result;
}
void
be_visitor_connector_dds_ex_base::process_template_args (
AST_Connector *node)
{
AST_Module *m =
dynamic_cast<AST_Module*> (node->defined_in ());
/// If this is non-zero, we use this to limit our template
/// args list to those used in the alias. If it is zero, we
/// just use the complete template arg list in the
/// instantiation.
this->t_ref_ = m->from_ref ();
this->t_inst_ = m->from_inst ();
/// We assume the connector comes from the instantiation
/// of a template module, and the regular module it's
/// defined in (at some level) will have a reference to it.
while (this->t_inst_ == 0 && m != 0)
{
this->t_inst_ = m->from_inst ();
m = dynamic_cast<AST_Module*> (m->defined_in ());
}
if (this->t_inst_ == 0)
{
/// Probably means we're trying the base connector
/// of DDS_State or DDS_Event, in which case we
/// return so the caller can try again with the
/// derived connector, which will succeed in
/// finding the template module instantiation and
/// its associated template arguments.
return;
}
/// We need to fetch and store these so we can match them
/// to the corresponding args and determine whether a
/// corresponding boolean template arg (indicating FIXED
/// size type) should be inserted into the
/// connector base class template arg list.
this->t_params_ = this->t_inst_->ref ()->template_params ();
this->match_template_args ();
/// We depend on the DDS datatype being the first template
/// argument for now, this may change.
AST_Decl **datatype = 0;
int const status = this->t_args_.get (datatype, 0UL);
if (status != 0)
{
ACE_ERROR ((LM_ERROR,
ACE_TEXT ("be_visitor_connector_dds_ex_base::")
ACE_TEXT ("process_template_args - ")
ACE_TEXT ("template arg not found\n ")));
return;
}
this->dds_traits_name_ = (*datatype)->flat_name ();
this->dds_traits_name_ += "_DDS_Traits";
}
void
be_visitor_connector_dds_ex_base::match_template_args (void)
{
/// If the connector was declared in an aliased templated
/// module, we want to populate our template args list with
/// only the args referenced in the alias (see FOR loop
/// below). Otherwise, we just copy the containing template
/// module instantiation's arg list.
if (this->t_ref_ == 0)
{
this->t_args_ = *this->t_inst_->template_args ();
return;
}
for (UTL_StrlistActiveIterator i (this->t_ref_->param_refs ());
! i.is_done ();
i.next ())
{
const char *ref_name = i.item ()->get_string ();
size_t slot = 0;
for (FE_Utils::T_PARAMLIST_INFO::CONST_ITERATOR ci (
*this->t_inst_->ref ()->template_params ());
! ci.done ();
ci.advance (), ++slot)
{
FE_Utils::T_Param_Info *t_param = 0;
ci.next (t_param);
if (t_param->name_ == ref_name)
{
AST_Decl **d = 0;
this->t_inst_->template_args ()->get (d, slot);
this->t_args_.enqueue_tail (*d);
break;
}
}
}
}
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