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//=============================================================================
/**
* @file cdr_op_cs.cpp
*
* $Id$
*
* Visitor generating code for CDR operators for unions
*
*
* @author Aniruddha Gokhale
*/
//=============================================================================
#include "union.h"
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 ()
|| node->is_local ())
{
return 0;
}
// Set the substate as generating code for the types defined in our scope
this->ctx_->sub_state (TAO_CodeGen::TAO_CDR_SCOPE);
be_visitor_context ctx (*this->ctx_);
for (UTL_ScopeActiveIterator si (node, UTL_Scope::IK_localtypes);
!si.is_done ();
si.next ())
{
AST_Decl *d = si.item ();
be_enum *e = be_enum::narrow_from_decl (d);
if (e != 0)
{
be_visitor_enum_cdr_op_cs visitor (&ctx);
if (e->accept (&visitor) == -1)
{
ACE_ERROR ((LM_ERROR,
"(%N:%l) be_visitor_union_cdr_op_cs::visit_union"
" - codegen for enum failed\n"));
}
// Restore the union node in the enum visitor's context.
ctx.node (this->ctx_->node ());
}
}
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 ();
*os << be_nl_2 << "// TAO_IDL - Generated from" << be_nl
<< "// " << __FILE__ << ":" << __LINE__ << be_nl_2;
*os << be_global->core_versioning_begin () << be_nl;
// Set the sub state as generating code for the output operator.
this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_OUTPUT);
*os << "::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;
switch (node->udisc_type ())
{
case AST_Expression::EV_bool:
*os << "::ACE_OutputCDR::from_boolean tmp (_tao_union._d ());" << be_nl
<< "if ( !(strm << tmp) )" << be_idt_nl;
break;
case AST_Expression::EV_char:
*os << "::ACE_OutputCDR::from_char tmp (_tao_union._d ());" << be_nl
<< "if ( !(strm << tmp) )" << be_idt_nl;
break;
case AST_Expression::EV_wchar:
*os << "::ACE_OutputCDR::from_wchar tmp (_tao_union._d ());" << be_nl
<< "if ( !(strm << tmp) )" << be_idt_nl;
break;
default:
*os << "if ( !(strm << _tao_union._d ()) )" << be_idt_nl;
break;
}
*os << "{" << be_idt_nl
<< "return false;" << be_uidt_nl
<< "}" << be_uidt_nl << be_nl
<< "::CORBA::Boolean result = true;" << be_nl_2
<< "switch (_tao_union._d ())" << be_nl
<< "{" << be_idt;
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);
}
// If there is no explicit default case, but there
// is an implicit one, and the discriminant is an enum,
// we need this to avert warnings in some compilers that
// not all case values are included. If there is no
// implicit default case, or the discriminator is not
// an enum, this does no harm.
if (node->gen_empty_default_label ())
{
*os << be_nl << "default:" << be_idt_nl;
*os << "break;"<< be_uidt;
}
*os << be_uidt_nl << "}" << be_nl_2
<< "return result;" << be_uidt_nl
<< "}" << be_nl_2;
// Set the substate as generating code for the input operator.
this->ctx_->sub_state(TAO_CodeGen::TAO_CDR_INPUT);
*os << "::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->full_name ()
<< " " << "_tao_discriminant;" << be_nl;
switch (node->udisc_type ())
{
case AST_Expression::EV_bool:
*os << "::ACE_InputCDR::to_boolean tmp (_tao_discriminant);" << be_nl
<< "if ( !(strm >> tmp) )" << be_idt_nl;
break;
case AST_Expression::EV_char:
*os << "::ACE_InputCDR::to_char tmp (_tao_discriminant);" << be_nl
<< "if ( !(strm >> tmp) )" << be_idt_nl;
break;
case AST_Expression::EV_wchar:
*os << "::ACE_InputCDR::to_wchar tmp (_tao_discriminant);" << be_nl
<< "if ( !(strm >> tmp) )" << be_idt_nl;
break;
default:
*os << "if ( !(strm >> _tao_discriminant) )" << be_idt_nl;
break;
}
*os << "{" << be_idt_nl
<< "return false;" << be_uidt_nl
<< "}" << be_uidt_nl << be_nl
<< "::CORBA::Boolean result = true;" << be_nl_2
<< "switch (_tao_discriminant)" << be_nl
<< "{" << be_idt;
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);
}
// If there is no explicit default case, but there
// is an implicit one, and the discriminant is an enum,
// we need this to avert warnings in some compilers that
// not all case values are included. If there is no
// implicit default case, or the discriminator is not
// an enum, this does no harm.
if (node->gen_empty_default_label ())
{
*os << be_nl;
*os << "default:" << be_idt_nl;
*os << "_tao_union._default ();" << be_nl;
*os << "// For maximum interop compatibility, force the same value as transmitted" << be_nl;
*os << "_tao_union._d (_tao_discriminant);" << be_nl;
*os << "break;" << be_uidt;
}
*os << be_uidt_nl
<< "}" << be_nl_2
<< "return result;" << be_uidt_nl
<< "}" << be_nl;
bool use_underscore = (this->ctx_->tdef () == 0);
if (be_global->gen_ostream_operators ())
{
node->gen_ostream_operator (os, use_underscore);
}
*os << be_global->core_versioning_end () << be_nl;
node->cli_stub_cdr_op_gen (true);
return 0;
}
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