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/**
* @file ast_visitor_tmpl_module_ref.cpp
*
* @author Jeff Parsons
*/
//=============================================================================
#include "ast_visitor_tmpl_module_ref.h"
#include "ast_visitor_context.h"
#include "ast_generator.h"
#include "ast_module.h"
#include "ast_template_module.h"
#include "ast_template_module_ref.h"
#include "global_extern.h"
#include "nr_extern.h"
ast_visitor_tmpl_module_ref::ast_visitor_tmpl_module_ref (
ast_visitor_context *ctx)
: ast_visitor_tmpl_module_inst (ctx, true)
{
}
ast_visitor_tmpl_module_ref::~ast_visitor_tmpl_module_ref (void)
{
}
int
ast_visitor_tmpl_module_ref::visit_template_module_ref (
AST_Template_Module_Ref *node)
{
/// This traversal should be done only once. If the template
/// module this ref is contained in is itself aliased later,
/// we don't want to execute the steps below again.
if (node->processed ())
{
return 0;
}
// This method is an override of the base class, and creates
// the necessary implied IDL in the template module.
// Later, the base class visitor then skips the alias and
// processes the implied IDL. It's a bit inefficient to have
// the implied IDL in both the template module and its
// instantiations, but otherwise the lookup issues are
// extremely complicated. This approach allows
// lookup_by_name_local() to just skip over the alias and
// match the module of the same name occurring later in the
// template module scope. From that vantage point, the
// reifying visitor uses its established mechanism to jump
// to the module of the same name in the instantiated template
// module scope (see ast_visitor_reifying::check_and_store()
// and ast_visitor_reifying::template_module_rel_name()).
UTL_ScopedName sn (node->local_name (), 0);
AST_Module *added_module =
idl_global->gen ()->create_module (idl_global->scopes (). top (),
&sn);
added_module->from_ref (node);
added_module->from_inst (this->tmi_);
idl_global->scopes ().top ()->add_to_scope (added_module);
idl_global->scopes ().push (added_module);
/// Replace the current param list (from the reference) with
/// the the list from the referenced template module, since
/// that's what will be search for any matches. We save the
/// current list to restore after the traversal.
if (idl_global->for_new_holder () == 0)
{
idl_global->for_new_holder (
const_cast<UTL_StrList *> (
node->param_refs ()));
}
UTL_StrList const *old_refs = idl_global->alias_params ();
FE_Utils::T_PARAMLIST_INFO const *old_params =
idl_global->current_params ();
idl_global->alias_params (
const_cast<UTL_StrList *> (node->param_refs ()));
AST_Template_Module *tm = node->ref ();
idl_global->current_params (tm->template_params ());
// Visit the scope of referenced template module. No need to
// update the template parameter list since its param list has
// to be a subset of the one we're in.
if (this->visit_scope (tm) != 0)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("ast_visitor_tmpl_module_ref::")
ACE_TEXT ("visit_template_module_ref - ")
ACE_TEXT ("visit_scope failed\n")),
-1);
}
/// Restore the global param list state.
idl_global->current_params (
const_cast<FE_Utils::T_PARAMLIST_INFO *> (
old_params));
idl_global->for_new_holder (0);
idl_global->alias_params (const_cast<UTL_StrList *> (old_refs));
idl_global->scopes ().pop ();
node->processed (true);
return 0;
}
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