Language/13_Statements/12_Labels_A03_t04.dart

/*
 * Copyright (c) 2011, 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.
 */
/**
 * @assertion The scope of a label that labels a statement s is s. The scope of a label that
 * labels a case clause of a switch statement s is s.
 * @description Checks that a labeled statement nested inside another labeled statement 
 * can override a label from the enclosing scope by using the same identifier.
 * @author rodionov
 * @reviewer iefremov
 */
import "../../Utils/expect.dart";

main() {
  bool flag = false;
  L: do {
    L: for(int i in [1, 2]) {
      break L;
    }
    flag = true;
  } while(false);
  Expect.isTrue(flag);
  
  flag = false;
  L: for(int i in [1, 2]) {
    switch(i) {
      L:
      case 0:
        flag = true;
        break;
      case 2:
        continue L;
    }
  };
  Expect.isTrue(flag);
  
  flag = false;
  switch(1) {
    L: case 0:
      Expect.fail("This code shouldn't be executed");
      break;
      
    default:
      L: do {
        switch(1) {
          L: case 0:
            flag = true;
            break;
            
          default:
            continue L;
        }
      } while(false);
      break;
  }
  Expect.isTrue(flag);
}