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// $Id$
// ============================================================================
//
// = LIBRARY
// TAO IDL
//
// = FILENAME
// be_operation.cpp
//
// = DESCRIPTION
// Extension of class AST_Operation 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_operation, "$Id$")
/*
* BE_Operation
*/
be_operation::be_operation (void)
: argument_count_ (-1),
has_native_ (0),
strategy_ (new be_operation_default_strategy (this))
{
}
be_operation::be_operation (AST_Type *rt, AST_Operation::Flags fl,
UTL_ScopedName *n, UTL_StrList *p)
: AST_Operation (rt, fl, n, p),
AST_Decl (AST_Decl::NT_op, n, p),
UTL_Scope (AST_Decl::NT_op),
argument_count_ (-1),
has_native_ (0),
strategy_ (new be_operation_default_strategy (this))
{
}
be_operation::~be_operation (void)
{
// We know that it cannot be 0, but..
if (!this->strategy_)
delete this->strategy_;
}
// compute total number of members
int
be_operation::compute_argument_attr (void)
{
if (this->argument_count_ != -1)
return 0;
this->argument_count_ = 0;
// if there are elements in this scope
if (this->nmembers () > 0)
{
// instantiate a scope iterator.
UTL_ScopeActiveIterator *si =
new UTL_ScopeActiveIterator (this, UTL_Scope::IK_decls);
while (!(si->is_done ()))
{
// get the next AST decl node
AST_Decl *d = si->item ();
if (d->node_type () == AST_Decl::NT_argument)
{
this->argument_count_++;
be_argument *arg = be_argument::narrow_from_decl (d);
be_type* type =
be_type::narrow_from_decl (arg->field_type ());
if (type->base_node_type () == AST_Decl::NT_native)
this->has_native_ = 1;
}
si->next ();
} // end of while
delete si; // free the iterator object
}
be_type* type = be_type::narrow_from_decl (this->return_type ());
if (type->base_node_type () == AST_Decl::NT_native)
this->has_native_ = 1;
return 0;
}
int
be_operation::void_return_type ()
{
be_type* type = be_type::narrow_from_decl (this->return_type ());
if (type->node_type () == AST_Decl::NT_pre_defined
&& (be_predefined_type::narrow_from_decl (type)->pt ()
== AST_PredefinedType::PT_void))
return 1;
else
return 0;
}
// return the member count
int
be_operation::argument_count (void)
{
this->compute_argument_attr ();
return this->argument_count_;
}
// return if any argument or the return type is a <native> type.
int
be_operation::has_native (void)
{
this->compute_argument_attr ();
return this->has_native_;
}
be_argument *
be_operation::add_argument_to_scope (be_argument *arg)
{
this->add_to_scope (arg);
this->add_to_referenced (arg, 0, 0);
return arg;
}
// compute the size type of the node in question
int
be_operation::compute_size_type (void)
{
UTL_ScopeActiveIterator *si;
AST_Decl *d;
be_decl *bd;
if (this->nmembers () > 0)
{
// if there are elements in this scope
si = new UTL_ScopeActiveIterator (this, UTL_Scope::IK_decls);
// instantiate a scope iterator.
while (!(si->is_done ()))
{
// get the next AST decl node
d = si->item ();
bd = be_decl::narrow_from_decl (d);
if (bd != 0)
{
// our sizetype depends on the sizetype of our members. Although
// previous value of sizetype may get overwritten, we are
// guaranteed by the "size_type" call that once the value reached
// be_decl::VARIABLE, nothing else can overwrite it.
this->size_type (bd->size_type ());
}
else
{
ACE_DEBUG ((LM_DEBUG,
"WARNING (%N:%l) be_operation::compute_size_type - "
"narrow_from_decl returned 0\n"));
}
si->next ();
} // end of while
delete si; // free the iterator object
}
return 0;
}
int
be_operation::accept (be_visitor *visitor)
{
return visitor->visit_operation (this);
}
be_operation_strategy *
be_operation::set_strategy (be_operation_strategy *new_strategy)
{
be_operation_strategy *old = this->strategy_;
if (new_strategy != 0)
this->strategy_ = new_strategy;
return old;
}
TAO_CodeGen::CG_STATE
be_operation::next_state (TAO_CodeGen::CG_STATE current_state,
int is_extra_state)
{
return this->strategy_->next_state (current_state, is_extra_state);
}
int
be_operation::has_extra_code_generation (TAO_CodeGen::CG_STATE current_state)
{
return this->strategy_->has_extra_code_generation (current_state);
}
be_operation*
be_operation::marshaling ()
{
return this->strategy_->marshaling ();
}
be_operation*
be_operation::arguments ()
{
return this->strategy_->arguments ();
}
// Narrowing
IMPL_NARROW_METHODS3 (be_operation, AST_Operation, be_scope, be_decl)
IMPL_NARROW_FROM_DECL (be_operation)
IMPL_NARROW_FROM_SCOPE (be_operation)
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