/*

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 */

/*
 * ast_array.cc - Implementation of class AST_Array
 *
 * 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	<idl.hh>
#include	<idl_extern.hh>
      
/*
 * Constructor(s) and destructor
 */
AST_Array::AST_Array()
	 : pd_n_dims(0), pd_dims(NULL), pd_base_type(NULL)
{
}

AST_Array::AST_Array(UTL_ScopedName *n, unsigned long nd, UTL_ExprList *ds)
	 : AST_Decl(AST_Decl::NT_array, n, NULL),
	   pd_n_dims(nd), pd_base_type(NULL)
{
  pd_dims = compute_dims(ds, nd);
}

/*
 * 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)
{
  AST_Expression	**result;
  UTL_ExprlistActiveIterator *l;
  unsigned long		i;

  if (ds == NULL)
    return NULL;

  result = new AST_Expression *[nds];
  l      = new UTL_ExprlistActiveIterator(ds);

  for (i = 0; !(l->is_done()) && i < nds; l->next(), i++)
    result[i] = l->item();
  delete l;
  return result;
}

/*
 * Public operations
 */


/*
 * Redefinition of inherited virtual operations
 */

/*
 * Dump this AST_Array node to the ostream o
 */
void
AST_Array::dump(ostream &o)
{
  unsigned long	i;

  pd_base_type->dump(o);
  o << " ";
  local_name()->dump(o);
  for (i = 0; i < pd_n_dims; i++) {
    o << "[";
    pd_dims[i]->dump(o);
    o << "]";
  }
}

/*
 * Data accessors
 */
const unsigned long 
AST_Array::n_dims()
{
  return pd_n_dims;
}

AST_Expression **
AST_Array::dims()
{
  return pd_dims;
}

AST_Type *
AST_Array::base_type()
{
  return pd_base_type;
}

void 
AST_Array::set_base_type(AST_Type *nbt)
{
  pd_base_type = nbt;
}

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

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