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//
// $Id$
//
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// cdr_op_ch.cpp
//
// = DESCRIPTION
// Visitor generating code for Cdr operators of a Typedef node
//
// = AUTHOR
// Aniruddha Gokhale
//
// ============================================================================
#include "idl.h"
#include "idl_extern.h"
#include "be.h"
#include "be_visitor_typedef.h"
ACE_RCSID(be_visitor_typedef, cdr_op_ch, "$Id$")
// ***************************************************************************
// Typedef visitor for generating Cdr operator declarations in the client header
// ***************************************************************************
be_visitor_typedef_cdr_op_ch::be_visitor_typedef_cdr_op_ch
(be_visitor_context *ctx)
: be_visitor_typedef (ctx)
{
}
be_visitor_typedef_cdr_op_ch::~be_visitor_typedef_cdr_op_ch (void)
{
}
int
be_visitor_typedef_cdr_op_ch::visit_typedef (be_typedef *node)
{
if (node->cli_hdr_cdr_op_gen () || node->imported ())
return 0;
TAO_OutStream *os = tao_cg->client_header ();
// generate the CDR << and >> operator declarations
os->indent ();
// In general, we may have a chain of typedefs. i.e.,
// typedef sequence<long> X;
// typedef X Y;
// typedef Y Z; and so on
// The first time we will be in will be for node Z for which the code
// generation has to take place. However, it is not enough to just generate
// code that looks like -
// typedef Y Z;
// For different types (in this case we have a sequence), we will need
// typedefs for the _var and _out types for Z. If it had been an array, we
// will additionally have the _forcdr type as well as inlined *_alloc, _dup,
// and _free methods.
//
// Finally, we need to differentiate between the case where we were
// generating code for
// typedef sequence<long> X; and
// typedef Y Z; where Y was somehow aliased to the sequence. In the former
// case, we will need to generate all the code for sequence<long> or whatever
// the type maybe. In the latter, we just need typedefs for the type and all
// associated _var, _out, and other types.
be_type *bt; // base type
if (this->ctx_->tdef ())
{
// the fact that we are here indicates that we were generating code for a
// typedef node whose base type also happens to be another typedef-ed
// (i.e. an alias) node for another (possibly alias) node
this->ctx_->alias (node); // save this alias
// grab the most primitive base type in the chain to avoid recusrsively
// going thru this visit method
bt = node->primitive_base_type ();
if (!bt)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_typedef - "
"bad primitive base type\n"
), -1);
}
// accept on this base type, but generate code for the typedef node
if (bt->accept (this) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_typedef - "
"failed to accept visitor\n"
), -1);
}
this->ctx_->alias (0); // reset
}
else
{
// the context has not stored cdr "tdef" node. So we must be in here for
// the first time
this->ctx_->tdef (node); // save the typedef node
// grab the immediate base type node
bt = be_type::narrow_from_decl (node->base_type ());
if (!bt)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_typedef - "
"bad base type\n"
), -1);
}
// accept on this base type, but generate code for the typedef node
if (bt->accept (this) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_typedef - "
"failed to accept visitor\n"
), -1);
}
this->ctx_->tdef (0); // reset
}
node->cli_hdr_cdr_op_gen (1);
return 0;
}
int
be_visitor_typedef_cdr_op_ch::visit_array (be_array *node)
{
TAO_OutStream *os = this->ctx_->stream (); // output stream
be_typedef *tdef = this->ctx_->tdef (); // typedef node
be_decl *scope = this->ctx_->scope (); // scope in which it is used
be_type *bt;
if (this->ctx_->alias ()) // typedef of a typedef
bt = this->ctx_->alias ();
else
bt = node;
if (!bt->imported () &&
bt->node_type () == AST_Decl::NT_array) // direct typedef of a base node
// type
{
// let the base class visitor handle this case
if (this->be_visitor_typedef::visit_array (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_array - "
"base class visitor failed \n"
), -1);
}
}
return 0;
}
int
be_visitor_typedef_cdr_op_ch::visit_enum (be_enum *node)
{
TAO_OutStream *os = this->ctx_->stream (); // output stream
be_typedef *tdef = this->ctx_->tdef (); // typedef node
be_decl *scope = this->ctx_->scope (); // scope in which it is used
be_type *bt;
if (this->ctx_->alias ()) // typedef of a typedef
bt = this->ctx_->alias ();
else
bt = node;
if (bt->node_type () == AST_Decl::NT_enum) // direct typedef of a base node
// type
{
// let the base class visitor handle this case
if (this->be_visitor_typedef::visit_enum (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_enum - "
"base class visitor failed \n"
), -1);
}
}
return 0;
}
int
be_visitor_typedef_cdr_op_ch::visit_sequence (be_sequence *node)
{
TAO_OutStream *os = this->ctx_->stream (); // output stream
be_typedef *tdef = this->ctx_->tdef (); // typedef node
be_decl *scope = this->ctx_->scope (); // scope in which it is used
be_type *bt;
if (this->ctx_->alias ()) // typedef of a typedef
bt = this->ctx_->alias ();
else
bt = node;
if (bt->node_type () == AST_Decl::NT_sequence) // direct typedef of a base node
// type
{
// let the base class visitor handle this case
if (this->be_visitor_typedef::visit_sequence (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_sequence - "
"base class visitor failed \n"
), -1);
}
}
return 0;
}
int
be_visitor_typedef_cdr_op_ch::visit_structure (be_structure *node)
{
TAO_OutStream *os = this->ctx_->stream (); // output stream
be_typedef *tdef = this->ctx_->tdef (); // typedef node
be_decl *scope = this->ctx_->scope (); // scope in which it is used
be_type *bt;
if (this->ctx_->alias ()) // typedef of a typedef
bt = this->ctx_->alias ();
else
bt = node;
if (bt->node_type () == AST_Decl::NT_struct) // direct typedef of a base node
// type
{
// let the base class visitor handle this case
if (this->be_visitor_typedef::visit_structure (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_cdr_op_ch::"
"visit_structure - "
"base class visitor failed \n"
), -1);
}
}
return 0;
}
int
be_visitor_typedef_cdr_op_ch::visit_union (be_union *node)
{
TAO_OutStream *os = this->ctx_->stream (); // output stream
be_typedef *tdef = this->ctx_->tdef (); // typedef node
be_decl *scope = this->ctx_->scope (); // scope in which it is used
be_type *bt;
if (this->ctx_->alias ()) // typedef of a typedef
bt = this->ctx_->alias ();
else
bt = node;
if (bt->node_type () == AST_Decl::NT_union) // direct typedef of a base node
// type
{
// let the base class visitor handle this case
if (this->be_visitor_typedef::visit_union (node) == -1)
{
ACE_ERROR_RETURN ((LM_ERROR,
"(%N:%l) be_visitor_typedef_op_ch::"
"visit_union - "
"base class visitor failed \n"
), -1);
}
}
return 0;
}
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