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//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// cdr_op_cs.cpp
//
// = DESCRIPTION
// Visitor generating code for CDR operators for unions
//
// = AUTHOR
// Aniruddha Gokhale
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
#include "be_visitor_union.h"
ACE_RCSID(be_visitor_union, cdr_op_cs, "$Id$")
// ***************************************************************************
// Union visitor for generating CDR operator declarations in the client
// stubs file
// ***************************************************************************
be_visitor_union_cdr_op_cs::be_visitor_union_cdr_op_cs
(be_visitor_context *ctx)
: be_visitor_union (ctx)
{
}
be_visitor_union_cdr_op_cs::~be_visitor_union_cdr_op_cs (void)
{
}
int
be_visitor_union_cdr_op_cs::visit_union (be_union *node)
{
// already generated and/or we are imported. Don't do anything.
if (node->cli_stub_cdr_op_gen () || node->imported ())
return 0;
// set the substate as generating code for the types defined in our scope
this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_SCOPE);
// all we have to do is to visit the scope and generate code
if (this->visit_scope (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_cdr_op_cs"
"::visit_union - "
"codegen for scope failed\n"), -1);
}
TAO_OutStream *os = this->ctx_->stream ();
// set the sub state as generating code for the output operator
this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_OUTPUT);
*os << "ACE_INLINE CORBA::Boolean operator<< (" << be_idt << be_idt_nl
<< "TAO_OutputCDR &strm," << be_nl
<< "const " << node->name () << " &_tao_union" << be_uidt_nl
<< ")" << be_uidt_nl
<< "{" << be_idt_nl
<< "if (!(strm << _tao_union._d ()))" << be_idt_nl
<< "return 0;" << be_uidt_nl
<< "CORBA::Boolean result = 0;" << be_nl
<< "switch (_tao_union._d ())" << be_nl
<< "{" << be_idt_nl;
if (this->visit_scope (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_cdr_op_cs::"
"visit_union - "
"codegen for scope failed\n"), -1);
}
*os << be_uidt_nl << "}" << be_nl
<< "return result;" << be_uidt_nl
<< "}\n\n";
// set the substate as generating code for the input operator
this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_INPUT);
*os << "ACE_INLINE CORBA::Boolean operator>> (" << be_idt << be_idt_nl
<< "TAO_InputCDR &strm," << be_nl
<< node->name () << " &_tao_union" << be_uidt_nl
<< ")" << be_uidt_nl
<< "{" << be_idt_nl;
be_type* disc_type =
be_type::narrow_from_decl (node->disc_type ());
// Generate a temporary to store the discriminant
*os << disc_type->fullname ()
<< " " << "_tao_discriminant;" << be_nl
<< "if ( !(strm >> _tao_discriminant) )" << be_idt_nl
<< "return 0;" << be_uidt_nl
<< "CORBA::Boolean result = 0;" << be_nl
<< "switch (_tao_discriminant)" << be_nl
<< "{" << be_idt_nl;
if (this->visit_scope (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_cdr_op_cs::"
"visit_union - "
"codegen for scope failed\n"), -1);
}
*os << be_uidt_nl << "}" << be_nl
<< "return result;" << be_uidt_nl
<< "}\n\n";
node->cli_stub_cdr_op_gen (1);
return 0;
}
int
be_visitor_union_cdr_op_cs::pre_process (be_decl *bd)
{
if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_SCOPE)
return 0;
TAO_OutStream *os = this->ctx_->stream ();
be_union_branch* b =
be_union_branch::narrow_from_decl (bd);
if (b->label ()->label_kind () == AST_UnionLabel::UL_default)
{
*os << "default:" << be_idt_nl
<< "result = ";
}
else
{
*os << "case ";
b->gen_label_value (os);
*os << ":" << be_idt_nl
<< "{" << be_idt_nl;
}
return 0;
}
int
be_visitor_union_cdr_op_cs::post_process (be_decl *)
{
if (this->ctx_->sub_state () == TAO_CodeGen::TAO_CDR_SCOPE)
return 0;
TAO_OutStream *os = this->ctx_->stream ();
*os << be_uidt_nl << "}"
<< be_nl << "break;" << be_uidt_nl;
return 0;
}
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