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// ============================================================================
//
// = 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"
/*
* BE_UnionBranch
*/
be_union_branch::be_union_branch (void)
{
}
be_union_branch::be_union_branch (AST_UnionLabel *lab, AST_Type *ft,
UTL_ScopedName *n, UTL_StrList *p)
: AST_UnionBranch (lab, ft, n, p),
AST_Field (AST_Decl::NT_union_branch, ft, n, p),
AST_Decl (AST_Decl::NT_union_branch, n, p)
{
#if 0
// computes the repoID
compute_repoID ();
// computes the fully scoped name
compute_fullname ();
// compute the flattened fully scoped name
compute_flatname ();
#endif
}
// ----------------------------------------
// CODE GENERATION METHODS
// ----------------------------------------
// Generates the client-side header information for the union_branch
int
be_union_branch::gen_client_header (void)
{
be_type *bt; // the union_branch type
be_state *s; // state based code gen object
// retrieve a singleton instance of the code generator
TAO_CodeGen *cg = TAO_CODEGEN::instance ();
bt = be_type::narrow_from_decl (this->field_type ());
s = cg->make_state ();
if (!s || !bt || (s->gen_code (bt, this) == -1))
{
ACE_ERROR ((LM_ERROR, "be_union_branch: error generating type\n"));
return -1;
}
return 0;
}
// Generates the client-side stubs for the union_branch
int
be_union_branch::gen_client_stubs (void)
{
TAO_OutStream *cs; // output stream
TAO_NL nl; // end line
if (!this->cli_stub_gen_)
{
// retrieve a singleton instance of the code generator
TAO_CodeGen *cg = TAO_CODEGEN::instance ();
cs = cg->client_stubs ();
cs->indent ();
// generate a case stmt
if (this->label ()->label_val ()->ec () == AST_Expression::EC_symbol)
{
*cs << "case " << this->label ()->label_val ()->n () << ":\n";
}
else
{
*cs << "case " << this->label ()->label_val () << ":\n";
}
cs->incr_indent ();
*cs << "this->" << this->local_name () << "_ = u." << this->local_name ()
<< "_;" << nl;
*cs << "break;\n";
cs->decr_indent (0);
}
return 0;
}
// Generates the server-side header information for the union_branch
int
be_union_branch::gen_server_header (void)
{
// nothing to be done
return 0;
}
// Generates the server-side skeletons for the union_branch
int
be_union_branch::gen_server_skeletons (void)
{
// nothing to be done
return 0;
}
// Generates the client-side inline information
int
be_union_branch::gen_client_inline (void)
{
be_type *bt; // the union_branch type
be_state *s; // state based code gen object
// retrieve a singleton instance of the code generator
TAO_CodeGen *cg = TAO_CODEGEN::instance ();
bt = be_type::narrow_from_decl (this->field_type ());
s = cg->make_state ();
if (!s || !bt || (s->gen_code (bt, this) == -1))
{
ACE_ERROR ((LM_ERROR,
"be_union_branch: error generating impl of access methods\n"));
return -1;
}
return 0;
}
// Generates the server-side inline
int
be_union_branch::gen_server_inline (void)
{
// nothing to be done
return 0;
}
int
be_union_branch::gen_encapsulation (void)
{
TAO_OutStream *cs; // output stream
TAO_NL nl; // end line
TAO_CodeGen *cg = TAO_CODEGEN::instance ();
be_type *bt; // our type node
long i, arrlen;
long *arr; // an array holding string names converted to array of longs
cs = cg->client_stubs ();
cg->node (this); // pass ourselves in case we are needed
cs->indent (); // start from whatever indentation level we were at
// emit the case label value
*cs << this->label ()->label_val ();
*cs << ", // union case label (evaluated)" << nl;
// emit name
*cs << (ACE_OS::strlen (this->local_name ()->get_string ())+1) << ", ";
(void)this->tc_name2long(this->local_name ()->get_string (), arr, arrlen);
for (i=0; i < arrlen; i++)
{
cs->print ("0x%x, ", arr[i]);
}
*cs << " // name = " << this->local_name () << "\n";
// hand over code generation to our type node
bt = be_type::narrow_from_decl (this->field_type ());
if (!bt)
return -1;
return bt->gen_typecode ();
}
long
be_union_branch::tc_encap_len (void)
{
if (this->encap_len_ == -1)
{
be_type *bt;
this->encap_len_ = 4; // case label;
this->encap_len_ += this->name_encap_len (); // for name
bt = be_type::narrow_from_decl (this->field_type ());
if (!bt)
{
ACE_ERROR ((LM_ERROR, "be_union_branch: bad field type\n"));
return -1;
}
this->encap_len_ += bt->tc_size (); // note that we add the typecode size
// of the type
}
return this->encap_len_;
}
// Narrowing
IMPL_NARROW_METHODS2 (be_union_branch, AST_UnionBranch, be_decl)
IMPL_NARROW_FROM_DECL (be_union_branch)
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