Add half-hearted support for Clang, because its `blocks' are deficient.

[finally] / finally-test.c

/* -*-c-*-
 *
 * Test program for using `finally.h'
 *
 * (c) 2023 Mark Wooding
 */

/*----- Licensing notice --------------------------------------------------*
 *
 * This file is part of the `Finally' package.
 *
 * Finally 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.
 *
 * Finally 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 Finally.  If not, write to the Free Software
 * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307,
 * USA.
 */

/* Attention!
 *
 * This file is also compiled as C++, so we must be careful to keep it in the
 * common subset of C and C++.  Anything language-specific needs to be split
 * off into its own separate source file.
 */

/*----- Header files ------------------------------------------------------*/

#include <stdio.h>

#define FINALLY_TOLERATE_BUG_CAPTURE_COPIES 1
#include "finally.h"
#include "finally-test.h"

/*----- Main code ---------------------------------------------------------*/

static int test_softball(void)
{
  FINALLY({ STEP(1); });

  STEP(0);
  return (2);
}

static int test_ordering(void)
{
  FINALLY({ STEP(2); });
  FINALLY({ STEP(1); });

  STEP(0);

  return (3);
}

#ifndef FINALLY_BUG_CAPTURE_COPIES
static int test_capture(void)
{
  int n = -1; FINALLY({ STEP(n); });

  STEP(0);
  n = 1; return (2);
}
#endif

static int test_internal_block(void)
{
  int i;
  FINALLY({ STEP(10); });

  for (i = 0; i < 5; i++) {
    FINALLY({ STEP(2*i + 1); });
    STEP(2*i);
  }
  return (11);
}

static int test_local_xfer(void)
{
  int i, j;

  STEP(0);

  { FINALLY({ STEP(2); }); STEP(1); }

  do {
    FINALLY({ STEP(4); });
    STEP(3);
    if (secretly_true) break;
    MISSTEP;
  } while (0);

  for (i = 0; i < 5; i++) {
    FINALLY({
      if (i == 3) STEP(46);
      else STEP(12*i + 16);
    });
    STEP(12*i + 5);
    for (j = 0; j < 5; j++) {
      FINALLY({ STEP(12*i + 2*j + 7); });
      if (i == 3 && j == 1) { STEP(44); goto escape; }
      else if (j != 3) STEP(12*i + 2*j + 6);
      else { FINALLY({ STEP(12*i + 2*j + 6); }); continue; }
    }
  }
escape:
  STEP(47);

  return (48);
}

#if defined(HAVE_FEXCEPTIONS)
void try_catch_filling(unsigned f)
{
  int outstep = f&TCF_THROW ? 12 : 5; FINALLY({ STEP(outstep); });

  if (f&TCF_THROW) STEP(10);
  else STEP(2);

  try_catch_inner(f);
  STEP(4);
}

static int test_try_catch(void)
{
  STEP(0);
  try_catch_outer(0);
  STEP(8);
  try_catch_outer(TCF_THROW);
  return (15);
}
#endif

int main(void)
{
  init_test();

#define RUNTEST(name)							\
	do { begin_test(#name); STEP(test_##name()); end_test(); } while (0)
#define SKIPTEST(name, excuse) skip_test(#name, excuse)

  RUNTEST(softball);
  RUNTEST(ordering);
  RUNTEST(local_xfer);
#ifndef FINALLY_BUG_CAPTURE_COPIES
  RUNTEST(capture);
#else
  SKIPTEST(capture, "selected flavour captures copies");
#endif
  RUNTEST(internal_block);
#if defined(HAVE_FEXCEPTIONS)
  RUNTEST(try_catch);
#else
  SKIPTEST(try_catch, "no C++ compiler or no exception-handling support");
#endif

#undef RUNTEST
#undef SKIPTEST

  return (test_report());
}

/*----- That's all, folks -------------------------------------------------*/