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// $Id$
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// be_union_branch.cpp
//
// = DESCRIPTION
// Extension of class AST_UnionBranch that provides additional means for C++
// mapping.
//
// = AUTHOR
// Copyright 1994-1995 by Sun Microsystems, Inc.
// and
// Aniruddha Gokhale
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
ACE_RCSID(be, be_union_branch, "$Id$")
/*
* BE_UnionBranch
*/
be_union_branch::be_union_branch (void)
{
}
be_union_branch::be_union_branch (UTL_LabelList *ll, AST_Type *ft,
UTL_ScopedName *n, UTL_StrList *p)
: AST_UnionBranch (ll, ft, n, p),
AST_Field (AST_Decl::NT_union_branch, ft, n, p),
AST_Decl (AST_Decl::NT_union_branch, n, p)
{
}
// compute the size type of the node in question
int
be_union_branch::compute_size_type (void)
{
be_type *type = be_type::narrow_from_decl (this->field_type ());
if (!type)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_field::compute_size_type - "
"bad field type\n"), -1);
}
// our size type is the same as our type
this->size_type (type->size_type ()); // as a side effect will also update
// the size type of parent
return 0;
}
int
be_union_branch::gen_label_value (TAO_OutStream *os, unsigned long index)
{
AST_Expression *e = this->label (index)->label_val ();
if (e->ec () != AST_Expression::EC_symbol)
{
// Easy, just a number...
*os << e;
return 0;
}
// If the enum is not in the global scope we have to prefix it.
be_union *u =
be_union::narrow_from_scope (this->defined_in ());
if (u == 0)
return -1;
be_type* dt =
be_type::narrow_from_decl (u->disc_type ());
if (dt == 0)
return -1;
// Find where was the enum defined, if it was defined in the globa
// scope, then it is easy to generate the enum values....
be_scope* scope =
be_scope::narrow_from_scope (dt->defined_in ());
if (scope == 0)
{
*os << e->n ();
return 0;
}
// But if it was generated inside a module or something similar then
// we must prefix the enum value with something...
be_decl* decl =
scope->decl ();
*os << decl->fullname () << "::" << e->n ();
return 0;
}
int
be_union_branch::gen_default_label_value (TAO_OutStream *os,
be_union *bu)
{
be_union::DefaultValue dv;
if (bu->default_value (dv) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_branch::"
"gen_default_label_value - "
"computing default value failed\n"),
-1);
}
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:
os->print ("%d", dv.u.char_val);
break;
case AST_Expression::EV_bool:
*os << dv.u.bool_val;
break;
case AST_Expression::EV_any:
// The discriminant is an enum. Some compilers will
// not accept a numeric value assigned to this
// discriminant, so we must generate the string name.
{
AST_ConcreteType *act = bu->disc_type ();
be_enum *be = be_enum::narrow_from_decl (act);
// The function value_to_name() takes care of adding
// any necessary scoping to the output.
*os << be->value_to_name (dv.u.enum_val);
break;
}
case AST_Expression::EV_longlong:
case AST_Expression::EV_ulonglong:
// unimplemented
default:
// error caught earlier.
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_union_branch::"
"gen_default_label_value - "
"bad or unimplemented discriminant type\n"),
-1);
}
return 0;
}
int
be_union_branch::accept (be_visitor *visitor)
{
return visitor->visit_union_branch (this);
}
// Narrowing
IMPL_NARROW_METHODS2 (be_union_branch, AST_UnionBranch, be_decl)
IMPL_NARROW_FROM_DECL (be_union_branch)
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