tests/compiler/dart2js_extra/break_test.dart

// Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import "package:expect/expect.dart";

break1(int x, int y, int ew, int ez) {
  int w = 1;
  int z = 0;
  bk1:
  if (x == 2) {
    z = 1;
    if (y == 3) {
      w = 2;
      break bk1;
    } else {
      w = 3;
    }
  } else {
    z = 2;
    if (y == 3) {
      w = 4;
    } else {
      w = 5;
      break bk1;
    }
    break bk1;
  }
  Expect.equals(ew, w);
  Expect.equals(ez, z);
}

break2(int x, int y, int ew, int ez) {
  int w = 1;
  int z = 0;
  bk1:
  do {
    if (x == 2) {
      z = 1;
      if (y == 3) {
        w = 2;
        break bk1;
      } else {
        w = 3;
      }
    } else {
      z = 2;
      if (y == 3) {
        w = 4;
      } else {
        w = 5;
        break bk1;
      }
      break bk1;
    }
  } while (false);
  Expect.equals(ew, w);
  Expect.equals(ez, z);
}

break3(int x, int y, int ew, int ez) {
  int w = 1;
  int z = 0;
  do {
    if (x == 2) {
      z = 1;
      if (y == 3) {
        w = 2;
        break;
      } else {
        w = 3;
      }
    } else {
      z = 2;
      if (y == 3) {
        w = 4;
      } else {
        w = 5;
        break;
      }
      break;
    }
  } while (false);
  Expect.equals(ew, w);
  Expect.equals(ez, z);
}

obscureBreaks(x) {
  bool result = true;
  bar:
  do {
    if (x == 1) {
      foo:
      break;
    } else if (x == 2) {
      foo:
      break bar;
    } else if (x == 3) {
      bar:
      break;
    } else if (x == 4) {
      break bar;
    } else {
      result = false;
    }
  } while (false);
  return result;
}

ifBreaks(x, y) {
  int res = 2;
  foo:
  if (x == 1)
    bar:
    {
      if (y == 2) {
        res = 4;
        break foo;
      } else if (y == 3) {
        res = 5;
        break bar;
      }
      res = 3;
    }
  else
    baz:
    {
      if (y == 2) {
        res = 7;
        break foo;
      } else if (y == 3) {
        res = 8;
        break baz;
      }
      res = 6;
    }
  return res;
}

main() {
  break1(2, 3, 2, 1);
  break1(2, 4, 3, 1);
  break1(3, 3, 4, 2);
  break1(3, 4, 5, 2);
  break2(2, 3, 2, 1);
  break2(2, 4, 3, 1);
  break2(3, 3, 4, 2);
  break2(3, 4, 5, 2);
  break3(2, 3, 2, 1);
  break3(2, 4, 3, 1);
  break3(3, 3, 4, 2);
  break3(3, 4, 5, 2);
  Expect.isTrue(obscureBreaks(1), "1");
  Expect.isTrue(obscureBreaks(2), "2");
  Expect.isTrue(obscureBreaks(3), "3");
  Expect.isTrue(obscureBreaks(4), "4");
  Expect.isFalse(obscureBreaks(5), "5");
  Expect.equals(3, ifBreaks(1, 4));
  Expect.equals(4, ifBreaks(1, 2));
  Expect.equals(5, ifBreaks(1, 3));
  Expect.equals(6, ifBreaks(2, 4));
  Expect.equals(7, ifBreaks(2, 2));
  Expect.equals(8, ifBreaks(2, 3));
}