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//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// valuetype_cs.cpp
//
// = DESCRIPTION
// Visitor generating code for Valuetypes in the client stubs file.
//
// = AUTHOR
// Torsten Kuepper <kuepper2@lfa.uni-wuppertal.de>
// based on code from Aniruddha Gokhale
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
#include "be_visitor_valuetype.h"
ACE_RCSID(be_visitor_valuetype, valuetype_cs, "$Id$")
// ************************************************************
// Valuetype visitor for client stubs
// ************************************************************
be_visitor_valuetype_cs::be_visitor_valuetype_cs (be_visitor_context *ctx)
: be_visitor_valuetype (ctx)
{
}
be_visitor_valuetype_cs::~be_visitor_valuetype_cs (void)
{
}
int
be_visitor_valuetype_cs::visit_valuetype (be_valuetype *node)
{
TAO_OutStream *os; // output stream
if (node->cli_stub_gen () || node->imported ())
return 0;
os = this->ctx_->stream ();
os->indent (); // start with whatever indentation level we are at
// The _downcast method // %! use ACE_xxx_cast here ?
*os << node->name() << "* " << node->name()
<< "::_downcast (CORBA::ValueBase* v)" << be_nl
<< "{" << be_idt_nl
<< "if (v == 0) return 0;" << be_nl
<< "return (" << node->local_name() << "* ) "
<< "v->_tao_obv_narrow ((ptr_arith_t) &_downcast);" << be_uidt_nl
<< "}\n" << be_nl
// The _tao_obv_repository_id method
<< "const char* " << node->name()
<< "::_tao_obv_repository_id () const" << be_nl
<< "{" << be_idt_nl
<< "return this->_tao_obv_static_repository_id ();" << be_uidt_nl
<< "}\n" << be_nl
// The _tao_obv_narrow method
<< "void* " << node->name()
<< "::_tao_obv_narrow (ptr_arith_t type_id)" << be_nl
<< "{" << be_idt_nl
<< "if (type_id == (ptr_arith_t) &_downcast)" << be_idt_nl
<< "return this;" << be_uidt_nl
<< "void *rval = 0;" << be_nl;
// Find the possible base classes.
int n_inherits_downcastable = 0;
for (int i = 0; i < node->n_inherits (); i++)
{
AST_Interface *inherited =
AST_Interface::narrow_from_decl (node->inherits ()[i]);
if (inherited->is_valuetype())
{
++n_inherits_downcastable;
*os << "if (rval == 0)" << be_idt_nl
<< "rval = " << inherited->name()
<< "::_tao_obv_narrow (type_id);" << be_uidt_nl;
}
}
*os << "return rval;" << be_uidt_nl
<< "}\n\n";
// Nothing to marshal if abstract valuetype.
if (!node->is_abstract_valuetype ())
{
// The virtual _tao_marshal_v method
*os << "CORBA::Boolean " << node->name()
<< "::_tao_marshal_v (TAO_OutputCDR & strm)"
<< be_nl
<< "{" << be_idt_nl
<< "return ";
if (node->opt_accessor ())
{
*os << node->name ()
<<"::_tao_marshal_state (strm);" << be_uidt_nl;
}
else
{
*os << "this->_tao_marshal__" << node->flatname ()
<< " (strm);" << be_uidt_nl;
}
*os << "}\n" << be_nl;
// The virtual _tao_unmarshal_v method
*os << "CORBA::Boolean " << node->name()
<< "::_tao_unmarshal_v (TAO_InputCDR & strm)"
<< be_nl
<< "{" << be_idt_nl
<< "return ";
if (node->opt_accessor ())
{
*os << node->name ()
<<"::_tao_unmarshal_state (strm);" << be_uidt_nl;
}
else
{
*os << "this->_tao_unmarshal__" << node->flatname ()
<< " (strm);" << be_uidt_nl;
}
*os << "}\n" << be_nl;
} // !node->is_abstract_valuetype ()
// The static T::_tao_unmarshal method ----------------------------
*os << "CORBA::Boolean " << node->name()
<< "::_tao_unmarshal (TAO_InputCDR &strm, "
<< node->name() <<" *&new_object)" << be_nl
<< "{" << be_idt_nl
<< "CORBA::Boolean retval = 1;" << be_nl
<< "CORBA::ValueBase *base; // %! should be a _var"
<< be_nl
<< "CORBA::ValueFactory_ptr factory; // %! should be a _var"
<< be_nl
<< "if (!CORBA::ValueBase::_tao_unmarshal_pre (strm, factory, base," << be_idt_nl
<< " " << node->name ()
<< "::_tao_obv_static_repository_id ()) )" << be_nl
<< "{" << be_idt_nl
<< "return 0;" << be_uidt_nl
<< "}" << be_uidt_nl
<< "if (factory != 0)" << be_idt_nl
<< "{" << be_idt_nl
<< "base = factory->create_for_unmarshal ();" << be_nl
<< "factory->_remove_ref ();" << be_nl
<< "if (base == 0) return 0; // %! except.?" << be_nl
<< "//%! ACE_DEBUG ((LM_DEBUG, \"" << node->name()
<< "::_tao_unmarshal %s\\n\", "
<< "base->_tao_obv_repository_id () ));" << be_nl
<< "retval = base->_tao_unmarshal_v (strm);" << be_nl
<< "//%! ACE_DEBUG ((LM_DEBUG, \"" << node->name()
<< "::_tao_unmarshal retval unmarshal_v is %d\\n\", "
<< "retval));" << be_nl
<< "if (!retval) return 0;"
<< be_uidt_nl << "}" << be_uidt_nl
<< "// Now base must be null or point to the unmarshaled object."
<< be_nl
<< "// Align the pointer to the right subobject." << be_nl
<< "new_object = " << node->name () << "::_downcast (base);" << be_nl
<< "// %! unmarshal_post" << be_nl
<< "return 1;" << be_uidt_nl
<< "}\n" << be_nl;
// The static T::_tao_unmarshal method ------------------------ end
// generate the ifdefined macro for the _init type
os->gen_ifdef_macro (node->flatname (), "_init");
if (this->gen_init_impl (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_valuetype_cs::"
"visit_valuetype - "
"codegen for _init failed\n"), -1);
}
os->gen_endif ();
// generate code for the elements of the valuetype
if (this->visit_scope (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_valuetype_cs::"
"visit_valuetype - "
"codegen for scope failed\n"), -1);
}
// by using a visitor to declare and define the TypeCode, we have the
// added advantage to conditionally not generate any code. This will be
// based on the command line options. This is still TO-DO
// (see interface code how to do this. not yet impl.)
return 0;
}
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