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// -*- C++ -*-
//=============================================================================
/**
* @file union_typecode.cpp
*
* $Id$
*
* Union TypeCode generation visitor.
*
* @author Ossama Othman <ossama@dre.vanderbilt.edu>
*/
//=============================================================================
#include <string>
#include <iostream>
TAO::be_visitor_union_typecode::be_visitor_union_typecode (
be_visitor_context * ctx)
: be_visitor_typecode_defn (ctx)
{
}
int
TAO::be_visitor_union_typecode::visit_union (be_union * node)
{
TAO_OutStream & os = *this->ctx_->stream ();
os << be_nl << be_nl
<< "// TAO_IDL - Generated from" << be_nl
<< "// " << __FILE__ << ":" << __LINE__ << be_nl << be_nl;
std::string const fields_name (std::string ("_tao_cases_")
+ node->flat_name ());
be_type * const discriminant_type =
be_type::narrow_from_decl (node->disc_type ());
ACE_ASSERT (discriminant_type != 0);
std::string const case_array_type (
std::string ("TAO::TypeCode::Non_Default_Case<")
+ std::string (discriminant_type->full_name ())
+ std::string (", char const *>"));
// Generate array containing union non-default case
// characteristics.
os << "static " << case_array_type.c_str () << " const "
<< fields_name.c_str ()
<< "[] =" << be_idt_nl
<< "{" << be_idt_nl;
if (this->visit_cases (node) != 0)
return -1;
os << be_uidt_nl
<< "};" << be_uidt_nl << be_nl;
// Generate the TypeCode instantiation.
os
<< "static TAO::TypeCode::Union<char const *," << be_nl
<< " " << case_array_type.c_str () << " const *," << be_nl
<< " TAO::Null_RefCount_Policy> const"
<< be_idt_nl
<< "_tao_tc_" << node->flat_name () << " (" << be_idt_nl
<< "\"" << node->repoID () << "\"," << be_nl
<< "\"" << node->original_local_name () << "\"," << be_nl
<< discriminant_type->tc_name () << "," << be_nl
<< "_tao_cases_" << node->flat_name () << "," << be_nl
<< node->nfields () << ","
<< node->default_index () << "," << be_nl
// << default_member_name,
// << default_member_type
<< ");" << be_uidt_nl
<< be_uidt_nl;
return
this->gen_typecode_ptr (be_type::narrow_from_decl (node));
}
int
TAO::be_visitor_union_typecode::visit_cases (be_union * node)
{
AST_Field ** member_ptr = 0;
size_t const count = node->nfields ();
TAO_OutStream & os = *this->ctx_->stream ();
for (size_t i = 0; i < count; ++i)
{
node->field (member_ptr, i);
be_union_branch * const branch =
be_union_branch::narrow_from_decl (*member_ptr);
ACE_ASSERT (branch != 0);
if (branch->label ()->label_kind () == AST_UnionLabel::UL_label)
{
// Only deal with non-default cases. The default case has
// special handling in the union TypeCode implementation.
os << "{ ";
// Generate the label value. Only the first label value is
// used in the case where multiple labels are used for the
// same union branch/case.
branch->gen_label_value (&os, 0);
os << ", ";
be_type * const type =
be_type::narrow_from_decl ((*member_ptr)->field_type ());
os << "\"" << branch->original_local_name () << "\", "
<< "&" << type->tc_name ()
<< " }";
if (i < count - 1)
os << ",";
os << be_nl;
}
}
return 0;
}
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