// ast_array.cpp,v 1.23 2003/11/10 20:29:21 dhinton Exp

/*

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

ACE_RCSID (ast, 
           ast_array, 
           "ast_array.cpp,v 1.23 2003/11/10 20:29:21 dhinton Exp")

// Constructor(s) and destructor.

AST_Array::AST_Array (void)
  : COMMON_Base (),
    AST_Decl (),
    AST_Type (),
    AST_ConcreteType (),
    pd_n_dims (0),
    pd_dims (0),
    pd_base_type (0)
{
}

AST_Array::AST_Array (UTL_ScopedName *n,
                      unsigned long nd,
                      UTL_ExprList *ds,
                      idl_bool local,
                      idl_bool abstract)
  : COMMON_Base (local,
                 abstract),
    AST_Decl (AST_Decl::NT_array,
              n,
              I_TRUE),
    AST_Type (AST_Decl::NT_array,
              n),
    AST_ConcreteType (AST_Decl::NT_array,
                      n),
    pd_n_dims (nd),
    pd_base_type (0)
{
  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,
                         unsigned long nds)
{
  if (ds == 0)
    {
      return 0;
    }

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

  UTL_ExprlistActiveIterator iter (ds);

  for (unsigned long i = 0;
       !iter.is_done () && i < nds;
       iter.next (), i++)
    {
      result[i] = iter.item ();
    }

  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 (unsigned long 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 ());

  return 0;
}

// Data accessors.
unsigned long
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)
{
  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 ();
}

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

// Narrowing methods.
IMPL_NARROW_METHODS1(AST_Array, AST_ConcreteType)
IMPL_NARROW_FROM_DECL(AST_Array)
