// $Id$

// ============================================================================
//
// = LIBRARY
//    TAO IDL
//
// = FILENAME
//    be_operation_strategy.cpp
//
// = DESCRIPTION
//    A strategy to cover the differences between various variants
//    of an operations, e.g. AMI sendc_, AMI raise_
//
// = AUTHOR
//    Michael Kircher
//
// ============================================================================

#include "idl.h"
#include "idl_extern.h"
#include "be.h"

ACE_RCSID(be, be_operation_strategy, "$Id$")


be_operation_strategy::be_operation_strategy (be_operation *node,
                                              Strategy_Kind strategy_type)
  : node_ (node),
    strategy_type_ (strategy_type)
{
}

be_operation_strategy::~be_operation_strategy ()
{
}

int
be_operation_strategy::strategy_type ()
{
  return strategy_type_;
}

int 
be_operation_strategy::has_extra_code_generation (TAO_CodeGen::CG_STATE current_state)
{
  ACE_UNUSED_ARG (current_state);
  return 0;
}

be_operation *
be_operation_strategy::marshaling ()
{
  return 0;
}


be_operation *
be_operation_strategy::arguments ()
{
  return 0;
}

// ****************************************************************
// AMI sendc_ operation strategy

be_operation_default_strategy::be_operation_default_strategy (be_operation *node)
  : be_operation_strategy (node, 
                           DEFAULT)
{
}

be_operation_default_strategy::~be_operation_default_strategy ()
{
}


TAO_CodeGen::CG_STATE
be_operation_default_strategy::next_state (TAO_CodeGen::CG_STATE current_state,
                                           int is_extra_state)
{
  ACE_UNUSED_ARG (is_extra_state);
  return current_state;
}



// ****************************************************************
// AMI sendc_ operation strategy

be_operation_ami_sendc_strategy::be_operation_ami_sendc_strategy (be_operation *node,
                                                                  be_operation *marshaling,
                                                                  be_operation *arguments)
  : be_operation_strategy (node, 
                           AMI_SENDC),
    marshaling_ (marshaling),
    arguments_ (arguments)
{
}

be_operation_ami_sendc_strategy::~be_operation_ami_sendc_strategy ()
{
}


TAO_CodeGen::CG_STATE
be_operation_ami_sendc_strategy::next_state (TAO_CodeGen::CG_STATE current_state,
                                             int is_extra_state)
{
  if (is_extra_state)
    {
      switch (current_state)
        {
      case TAO_CodeGen::TAO_OPERATION_CH:
        return TAO_CodeGen::TAO_AMI_SENDC_OPERATION_CH;
      case TAO_CodeGen::TAO_OPERATION_CS:
        return TAO_CodeGen::TAO_AMI_SENDC_OPERATION_CS;
      default:
        return current_state;
        }
    }
  else  // !is_extra_state
    {
      return current_state;
    }
}

int 
be_operation_ami_sendc_strategy::has_extra_code_generation (TAO_CodeGen::CG_STATE current_state)
{
   if (current_state == TAO_CodeGen::TAO_OPERATION_CH
    || current_state == TAO_CodeGen::TAO_OPERATION_CS)
     return 1;
   else
     return 0;
}


be_operation*
be_operation_ami_sendc_strategy::marshaling ()
{
  return marshaling_;
}


be_operation*
be_operation_ami_sendc_strategy::arguments ()
{
  return arguments_;
}

// ****************************************************************
// AMI ExceptionHolder raise_ operation strategy

be_operation_ami_exception_holder_raise_strategy::be_operation_ami_exception_holder_raise_strategy (be_operation *node)
  : be_operation_strategy (node, 
                           AMI_EXCEPTION_HOLDER_RAISE)
{
}

be_operation_ami_exception_holder_raise_strategy::~be_operation_ami_exception_holder_raise_strategy ()
{
}


TAO_CodeGen::CG_STATE
be_operation_ami_exception_holder_raise_strategy::next_state (TAO_CodeGen::CG_STATE current_state,
                                                              int is_extra_state)
{
  if (!is_extra_state)
    {
      switch (current_state)
        {
      case TAO_CodeGen::TAO_OPERATION_CS:
        return TAO_CodeGen::TAO_AMI_EXCEPTION_HOLDER_RAISE_OPERATION_CS;
      default:
        return current_state;
        }
    }
  else
    return current_state;
}


// ****************************************************************
// AMI Reply Handler reply stub operation strategy

be_operation_ami_handler_reply_stub_strategy::be_operation_ami_handler_reply_stub_strategy (be_operation *node)
  : be_operation_strategy (node, 
                           AMI_EXCEPTION_HOLDER_RAISE)
{
}

be_operation_ami_handler_reply_stub_strategy::~be_operation_ami_handler_reply_stub_strategy ()
{
}


TAO_CodeGen::CG_STATE
be_operation_ami_handler_reply_stub_strategy::next_state (TAO_CodeGen::CG_STATE current_state,
                                                          int is_extra_state)
{
  if (is_extra_state)
    {
      switch (current_state)
        {
      case TAO_CodeGen::TAO_OPERATION_CH:
        return TAO_CodeGen::TAO_AMI_HANDLER_REPLY_STUB_OPERATION_CH;

      case TAO_CodeGen::TAO_OPERATION_CS:
        return TAO_CodeGen::TAO_AMI_HANDLER_REPLY_STUB_OPERATION_CS;

      default:
        return current_state;
        }  
    }
  else  // !is_extra_state
    {
      return current_state;
    }
}


int 
be_operation_ami_handler_reply_stub_strategy::has_extra_code_generation (TAO_CodeGen::CG_STATE current_state)
{
   if (current_state == TAO_CodeGen::TAO_OPERATION_CH
    || current_state == TAO_CodeGen::TAO_OPERATION_CS)
     return 1;
   else
     return 0;
}