// $Id: ast_array.cpp 91816 2010-09-17 08:35:56Z johnnyw $

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// AST_Array nodes denote array type and field modifiers.
// AST_Array nodes have a list of dimensions (a UTL_ExprList)
// a count of the number of dimensions and a base type (a
// subtype of AST_ConcreteType. This means that we cannot have
// arrays of AST_Interfaces???

#include "ast_array.h"
#include "ast_expression.h"
#include "ast_param_holder.h"
#include "ast_visitor.h"

#include "utl_exprlist.h"
#include "utl_identifier.h"
#include "ace/Log_Msg.h"
#include "ace/OS_Memory.h"

AST_Decl::NodeType const
AST_Array::NT = AST_Decl::NT_array;

AST_Array::AST_Array (UTL_ScopedName *n,
                      ACE_CDR::ULong nd,
                      UTL_ExprList *ds,
                      bool local,
                      bool abstract)
  : COMMON_Base (local,
                 abstract),
    AST_Decl (AST_Decl::NT_array,
              n,
              true),
    AST_Type (AST_Decl::NT_array,
              n),
    AST_ConcreteType (AST_Decl::NT_array,
                      n),
    pd_n_dims (nd),
    pd_base_type (0),
    owns_base_type_ (false)
{
  this->pd_dims = this->compute_dims (ds,
                                      nd);
}

AST_Array::~AST_Array (void)
{
}

// Private operations.

// Compute how many dimensions there are and collect their expressions
// into an array.
AST_Expression **
AST_Array::compute_dims (UTL_ExprList *ds,
                         ACE_CDR::ULong nds)
{
  if (ds == 0)
    {
      return 0;
    }

  AST_Expression **result = 0;
  ACE_NEW_RETURN (result,
                  AST_Expression *[nds],
                  0);

  UTL_ExprlistActiveIterator iter (ds);

  for (ACE_CDR::ULong i = 0;
       !iter.is_done () && i < nds;
       iter.next (), i++)
    {
      AST_Expression *orig = iter.item ();
      AST_Param_Holder *ph = orig->param_holder ();

      AST_Expression::ExprType ex_type =
        (ph == 0 ? orig->ev ()->et : ph->info ()->const_type_);

      AST_Expression *copy = 0;
      ACE_NEW_RETURN (copy,
                      AST_Expression (orig,
                                      ex_type),
                      0);

      result[i] = copy;
    }

  return result;
}

// Redefinition of inherited virtual operations.

// Dump this AST_Array node to the ostream o.
void
AST_Array::dump (ACE_OSTREAM_TYPE &o)
{
  pd_base_type->dump (o);

  this->dump_i (o, " ");

  this->local_name ()->dump (o);

  for (ACE_CDR::ULong i = 0; i < this->pd_n_dims; i++)
    {
      this->dump_i (o, "[");

      pd_dims[i]->dump (o);

      this->dump_i (o, "]");
    }
}

int
AST_Array::ast_accept (ast_visitor *visitor)
{
  return visitor->visit_array (this);
}

// Compute the size type of the node in question.
int
AST_Array::compute_size_type (void)
{
  AST_Type *type = this->base_type ();

  if (!type)
    {
      ACE_ERROR_RETURN ((LM_ERROR,
                         "(%N:%l) be_array::compute_size_type - "
                         "bad base type\n"),
                        -1);
    }

  // Our size type is the same as our type.
  this->size_type (type->size_type ());

  this->has_constructor (type->has_constructor ());

  return 0;
}

// Data accessors.
ACE_CDR::ULong
AST_Array::n_dims (void)
{
  return this->pd_n_dims;
}

AST_Expression **
AST_Array::dims (void)
{
  return this->pd_dims;
}

AST_Type *
AST_Array::base_type (void) const
{
  return this->pd_base_type;
}

void
AST_Array::set_base_type (AST_Type *nbt)
{
  this->pd_base_type = nbt;
  this->is_local_ = nbt->is_local ();
  AST_Decl::NodeType bnt = nbt->node_type ();

  if (bnt == AST_Decl::NT_sequence
      || bnt == AST_Decl::NT_param_holder)
    {
      this->owns_base_type_ = true;
    }
}

bool
AST_Array::legal_for_primary_key (void) const
{
  return this->base_type ()->legal_for_primary_key ();
}

void
AST_Array::destroy (void)
{
  if (this->owns_base_type_)
    {
      this->pd_base_type->destroy ();
      delete this->pd_base_type;
      this->pd_base_type = 0;
    }

  for (ACE_CDR::ULong i = 0; i < this->pd_n_dims; ++i)
    {
      this->pd_dims[i]->destroy ();
      delete this->pd_dims[i];
      this->pd_dims[i] = 0;
    }

  delete [] this->pd_dims;
  this->pd_dims = 0;
  this->pd_n_dims = 0;

  this->AST_ConcreteType::destroy ();
}

void
AST_Array::set_dims (AST_Expression **ds,
                     ACE_CDR::ULong nds)
{
  this->pd_dims = ds;
  this->pd_n_dims = nds;
}

IMPL_NARROW_FROM_DECL(AST_Array)
