C++ (Cpp) PL_is_acyclic Examples

Example #1

File: pl-write.c Project: gokhansolak/yap-6.3

/// @memberof write_canonical/2
word
pl_write_canonical2(term_t stream, term_t term)
{ GET_LD
  nv_options options;
  word rc;

  BEGIN_NUMBERVARS(TRUE);

  options.functor = FUNCTOR_isovar1;
  options.on_attvar = AV_SKIP;
  options.singletons = PL_is_acyclic(term);
  options.numbered_check = FALSE;

  rc = ( numberVars(term, &options, 0 PASS_LD) >= 0 &&
	 do_write2(stream, term,
		   PL_WRT_QUOTED|PL_WRT_IGNOREOPS|PL_WRT_NUMBERVARS|PLFLAG_BACKQUOTED_STRING)
       );

  END_NUMBERVARS(TRUE);

  return rc;
}

Example #2

File: pl-error.c Project: JorgeG1/swipl-devel

static void
rewrite_callable(atom_t *expected, term_t actual)
{ GET_LD
  term_t a = 0;
  int loops = 0;

  while ( PL_is_functor(actual, FUNCTOR_colon2) )
  { if ( !a )
     a = PL_new_term_ref();

    _PL_get_arg(1, actual, a);
    if ( !PL_is_atom(a) )
    { *expected = ATOM_atom;
      PL_put_term(actual, a);
      return;
    } else
    { _PL_get_arg(2, actual, a);
      PL_put_term(actual, a);
    }

    if ( ++loops > 100 && !PL_is_acyclic(actual) )
      break;
  }
}