Commit Graph

7 Commits

Author SHA1 Message Date
Sergej Jaskiewicz 55ae6d1f3e [JS IR] Optimize pattern-matching of enums into comparing their ordinals
For this code:
```
enum class Season {
    WINTER,
    SPRING,
    SUMMER,
    AUTUMN
}

fun bar1(x : Season) : String {
    return when (x) {
        Season.WINTER, Season.SPRING -> "winter_spring"
        Season.SUMMER -> "summer"
        else -> "autumn"
    }
}
```

previously we generated this:
```
function foo(x) {
    var tmp0_subject = x;
    return (tmp0_subject.equals(Season_WINTER_getInstance())
        ? true
        : tmp0_subject.equals(Season_SPRING_getInstance()))
            ? 'winter_spring'
            : tmp0_subject.equals(Season_SUMMER_getInstance())
                ? 'summer'
                : 'autumn';
}
```

And now we generated this:
```
function bar2(x) {
  var tmp0_subject = x;
  var tmp0 = tmp0_subject._get_ordinal__0_k$();
  var tmp;
  switch (tmp0) {
    case 0:
    case 1:
      tmp = 'winter_spring';
      break;
    case 2:
      tmp = 'summer';
      break;
    case 3:
      tmp = 'autumn';
      break;
    default:
      noWhenBranchMatchedException();
      break;
  }
  return tmp;
}
```
2021-10-14 11:44:01 +00:00
Mikhail Glukhikh 94fe79578e [FIR2IR] Generate unconditional branch in exhaustive whens 2020-03-20 11:55:34 +03:00
Mark Punzalan 9df2f69f09 [FIR] Disable failing blackbox codegen tests for FIR. 2019-11-19 11:00:09 +03:00
Svyatoslav Kuzmich 625983b28a [JS IR BE] Enum class lowering 2018-07-23 15:08:18 +03:00
Anton Bannykh 96355e2732 JS IR: mute codegen box tests automatically 2018-06-09 19:15:38 +03:00
Alexey Andreev 89db4dfe79 JS: translate when against enum to JsSwitch when possible 2017-11-17 11:07:41 +03:00
Alexander Udalov 20e36438e2 Move some tests from boxWithStdlib/ to box/
Move those tests which do not require neither stdlib nor reflect
2016-03-09 10:25:38 +03:00