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//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// discriminant_ch.cpp
//
// = DESCRIPTION
// Visitor generating code for discriminant of the Union
//
// = AUTHOR
// Aniruddha Gokhale
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
#include "be_visitor_union.h"
ACE_RCSID(be_visitor_union, discriminant_ch, "$Id$")
// *************************************************************************
// be_visitor_discriminant_ch - visitor for discriminant in client header file
// *************************************************************************
be_visitor_union_discriminant_ch::be_visitor_union_discriminant_ch
(be_visitor_context *ctx)
: be_visitor_decl (ctx)
{
}
be_visitor_union_discriminant_ch::~be_visitor_union_discriminant_ch (void)
{
}
int
be_visitor_union_discriminant_ch::visit_enum (be_enum *node)
{
TAO_OutStream *os; // output stream
be_union *bu =
this->ctx_->be_node_as_union (); // get the enclosing union backend
be_type *bt;
// check if we are visiting this node via a visit to a typedef node
if (this->ctx_->alias ())
bt = this->ctx_->alias ();
else
bt = node;
os = this->ctx_->stream ();
if (bt->node_type () != AST_Decl::NT_typedef // not a typedef
&& bt->is_child (bu)) // bt is defined inside the union
{
// instantiate a visitor context with a copy of our context. This info
// will be modified based on what type of node we are visiting
be_visitor_context ctx (*this->ctx_);
ctx.node (node); // set the node to be the node being visited. The scope
// is still the same
// first generate the enum declaration
ctx.state (TAO_CodeGen::TAO_ENUM_CH);
be_visitor *visitor = tao_cg->make_visitor (&ctx);
if (!visitor)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_discriminant_ch::"
"visit_enum - "
"Bad visitor\n"
), -1);
}
if (node->accept (visitor) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_discriminant_ch::"
"visit_enum - "
"codegen failed\n"
), -1);
}
delete visitor;
}
os->indent ();
// the set method
*os << "void _d (" << bt->nested_type_name (bu) << ");" << be_nl;
// the get method
*os << bt->nested_type_name (bu) << " _d (void) const;\n\n";
return 0;
}
int
be_visitor_union_discriminant_ch::visit_predefined_type (be_predefined_type
*node)
{
TAO_OutStream *os; // output stream
be_union *bu =
this->ctx_->be_node_as_union (); // get the enclosing union backend
be_type *bt;
// check if we are visiting this node via a visit to a typedef node
if (this->ctx_->alias ())
bt = this->ctx_->alias ();
else
bt = node;
os = this->ctx_->stream ();
os->indent ();
// the set method
*os << "void _d (" << bt->nested_type_name (bu) << ");" << be_nl;
// the get method
*os << bt->nested_type_name (bu) << " _d (void) const;\n\n";
return 0;
}
int
be_visitor_union_discriminant_ch::visit_typedef (be_typedef *node)
{
this->ctx_->alias (node); // save the typedef node for use in code generation
// as we visit the base type
// the node to be visited in the base primitve type that gets typedefed
be_type *bt = node->primitive_base_type ();
if (!bt || (bt->accept (this) == -1))
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_discriminant_ch::"
"visit_typedef - "
"Bad primitive type\n"
), -1);
}
this->ctx_->alias (0);
return 0;
}
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