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//=============================================================================
/**
* @file discriminant_ci.cpp
*
* Visitor generating code for discriminant of the union.
*
* @author Aniruddha Gokhale
*/
//=============================================================================
#include "union.h"
be_visitor_union_discriminant_ci::be_visitor_union_discriminant_ci (
be_visitor_context *ctx)
: be_visitor_decl (ctx)
{
}
be_visitor_union_discriminant_ci::~be_visitor_union_discriminant_ci ()
{
}
int
be_visitor_union_discriminant_ci::visit_enum (be_enum *node)
{
be_union *bu =
dynamic_cast<be_union*> (this->ctx_->node ());
be_type *bt = nullptr;
if (this->ctx_->alias ())
{
bt = this->ctx_->alias ();
}
else
{
bt = node;
}
TAO_OutStream *os = this->ctx_->stream ();
// now check if we need to generate the _default () method
be_union::DefaultValue dv;
if (bu->default_value (dv) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("be_visitor_union_discriminant_ci::")
ACE_TEXT ("visit_enum - ")
ACE_TEXT ("computing default value failed\n")),
-1);
}
TAO_INSERT_COMMENT (os);
if ((dv.computed_ != 0) && (bu->default_index () == -1))
{
// Only if all cases are not covered AND there is no explicit
// default, we get the _default () method.
*os << "ACE_INLINE" << be_nl
<< "void" << be_nl
<< bu->name () << "::_default ()" << be_nl
<< "{" << be_idt_nl
<< "this->_reset ();" << be_nl
<< "this->disc_ = ";
// We use one of the enum values that isn't used in this
// union if one is available.
UTL_ScopedName *sn = node->value_to_name (dv.u.enum_val);
if (sn)
{
// The function value_to_name() takes care of adding
// any necessary scoping to the output.
*os << sn;
}
else
{
// Since CORBA defines enums to be 32bits, use -1 as the
// out-of-bounds value for the _default() function.
*os << "static_cast <" << bt->name () << "> (-1)";
}
*os << ";" << be_uidt_nl
<< "}" << be_nl_2;
}
// the set method
*os << "// Accessor to set the discriminant." << be_nl
<< "ACE_INLINE" << be_nl
<< "void" << be_nl
<< bu->name () << "::_d (" << bt->name ()
<< " discval)" << be_nl
<< "{" << be_idt_nl
<< "this->disc_ = discval;" << be_uidt_nl
<< "}" << be_nl_2;
// the get method
*os << "// Accessor to get the discriminant." << be_nl
<< "ACE_INLINE" << be_nl
<< bt->name () << be_nl
<< bu->name () << "::_d () const" << be_nl
<< "{" << be_idt_nl
<< "return this->disc_;" << be_uidt_nl
<< "}";
return 0;
}
int
be_visitor_union_discriminant_ci::visit_predefined_type (
be_predefined_type *node
)
{
be_union *bu =
dynamic_cast<be_union*> (this->ctx_->node ());
be_type *bt = nullptr;
if (this->ctx_->alias ())
{
bt = this->ctx_->alias ();
}
else
{
bt = node;
}
TAO_OutStream *os = this->ctx_->stream ();
// Now check if we need to generate the _default () method.
be_union::DefaultValue dv;
if (bu->default_value (dv) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("be_visitor_union_discriminant_ci::")
ACE_TEXT ("visit_enum - ")
ACE_TEXT ("computing default value failed\n")),
-1);
}
TAO_INSERT_COMMENT (os);
if ((dv.computed_ != 0) && (bu->default_index () == -1))
{
// Only if all cases are not covered AND there is no explicit
// default, we get the _default () method.
*os << "ACE_INLINE" << be_nl
<< "void" << be_nl
<< bu->name () << "::_default ()" << be_nl
<< "{" << be_idt_nl
<< "this->_reset ();" << be_nl
<< "this->disc_ = ";
switch (bu->udisc_type ())
{
case AST_Expression::EV_short:
*os << dv.u.short_val;
break;
case AST_Expression::EV_ushort:
*os << dv.u.ushort_val;
break;
case AST_Expression::EV_long:
*os << dv.u.long_val;
break;
case AST_Expression::EV_ulong:
*os << dv.u.ulong_val;
break;
case AST_Expression::EV_char:
case AST_Expression::EV_octet:
case AST_Expression::EV_int8:
case AST_Expression::EV_uint8:
os->print ("'\\%o'", dv.u.char_val);
break;
case AST_Expression::EV_bool:
*os << (dv.u.bool_val == 0 ? "false" : "true");
break;
case AST_Expression::EV_longlong:
*os << dv.u.longlong_val;
break;
case AST_Expression::EV_ulonglong:
*os << dv.u.ulonglong_val;
break;
default:
// Error caught earlier.
ACE_ERROR_RETURN ((LM_ERROR,
ACE_TEXT ("be_visitor_union_discriminant_ci::")
ACE_TEXT ("visit_predefined_type - ")
ACE_TEXT ("bad or unimplemented ")
ACE_TEXT ("discriminant type\n")),
-1);
}
*os << ";" << be_uidt_nl << "}";
}
// The set method.
*os << be_nl_2
<< "// Accessor to set the discriminant." << be_nl
<< "ACE_INLINE" << be_nl
<< "void" << be_nl
<< bu->name () << "::_d ( ::" << bt->name ()
<< " discval)" << be_nl
<< "{" << be_idt_nl
<< "this->disc_ = discval;" << be_uidt_nl
<< "}" << be_nl_2;
// The get method.
*os << "// Accessor to get the discriminant." << be_nl
<< "ACE_INLINE" << be_nl
<< "::" << bt->name () << be_nl
<< bu->name () << "::_d () const" << be_nl
<< "{" << be_idt_nl
<< "return this->disc_;" << be_uidt_nl
<< "}";
return 0;
}
int
be_visitor_union_discriminant_ci::visit_typedef (be_typedef *node)
{
this->ctx_->alias (node);
// 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,
ACE_TEXT ("be_visitor_union_discriminant_ci::")
ACE_TEXT ("visit_typedef - ")
ACE_TEXT ("Bad primitive type\n")),
-1);
}
this->ctx_->alias (nullptr);
return 0;
}
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