
/*
 * Copyright (c) 1998 David Stes.
 *
 * This library is free software; you can redistribute it and/or modify it
 * under the terms of the GNU Library General Public License as published 
 * by the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU Library General Public License for more details.
 *
 * You should have received a copy of the GNU Library General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
 *
 * $Id: assoc.m,v 1.17 1998/05/26 13:13:58 stes Exp $
 */

#include "config.h"
#include <stdlib.h>
#include <assert.h>
#include <Object.h>
#include <ordcltn.h>
#include "node.h"
#include "decl.h"
#include "pointer.h"

@implementation Pointer

- pointer
{
  return pointer;
}

- (int)numpointers
{
  id e, p;
  int h = 1;

  for (e = self; (p = [e pointer]); e = p)
    h++;
  return h;
}

- abstrdecl
{
  return self;
}

- (unsigned)hash
{
  return [self numpointers];
}

- (BOOL)isEqual:x
{
  return [self numpointers] == [x numpointers];
}

- (BOOL)ispointer
{
  return YES;
}

- (BOOL)canforward
{
  return YES;
}

- specs:aList
{
  specs = aList;
  return self;
}

- hide:x rename:y
{
  return self;
}

- pointer:aDecl
{
  assert([aDecl isKindOf:(id) isa]);
  pointer = aDecl;
  return self;
}

- star
{
  if (pointer) {
    return [[self copy] pointer:[pointer star]];
  } else {
    return nil;
  }
}

- identifier
{
  return nil;
}

- gen
{
  gc('*');
  if (specs)
    [specs elementsPerform:@selector(gen)];
  if (pointer)
    [pointer gen];
  return self;
}

- gendef:sym
{
  gc('*');
  if (specs)
    [specs elementsPerform:@selector(gen)];
  if (pointer) {
    [pointer gendef:sym];
  } else {
    if (sym)
      [sym gen];
  }
  return self;
}

- synth
{
  return self;
}

- st80
{
  return self;
}

@end
 
